Note : Les descriptions sont présentées dans la langue officielle dans laquelle elles ont été soumises.
CA 02618913 2008-01-17
ELECTROHYDRAULIC CONTROL SYSTEM
FOR A VEHICLE
CROSS REFERENCE TO RELATED APPLICATION
This application claims the benefit of priority to U.S. Provisional Patent
Application Serial No. 60/880,901, filed January 17, 2007, which is
incorporated herein
by reference.
FIELD OF THE INVENTION
The present invention pertains to electrohydraulic control systems for
vehicles,
including such systems that can be retrofitted onto an existing vehicle, and
also
including systems for control and removal of ice and snow.
CA 02618913 2008-01-17
SUMMARY OF THE INVENTION
One embodiment of the present invention pertains to improvements in the
operation of snowplows, including the conversion of existing snowplows to
include
electronic control systems.
Yet another embodiment pertains to an apparatus for controlling a snowplow of
a
vehicle, comprising a hydraulically actuatable snowplow, a hydraulic actuator,
an
electronic controller, and dual input devices including a hand stick and a
keypad.
Yet another embodiment pertains to an apparatus for controlling the snow
removal functions of a vehicle, comprising a vehicle including a hydraulically
actuatable
snowplow and other actuatable tools, and a dual axis joystick with switches
for
establishing which tool is controlled by the joystick.
Yet another embodiment pertains to a method for controlling the snowplow of a
truck, comprising a truck having an actuatable snow removal tool and a two
axis
controller, wherein the tool responds to the controller with a predetermined
rate of
movement.
Yet another embodiment pertains to a system for electronically logging the
snow
and ice removal functions for the vehicle, in which the vehicle includes a
snowplow and
a system for distributing a granular product on a roadway. The system further
includes
sensors pertaining to the snowplow and distribution system. The system further
includes an electronic controller that receives the sensor signals, as well as
other
information about the state of the vehicle, this data being communicated to
the
controller over the vehicle power system. The controller compute data from
this sensed
data pertaining to the snow and ice removal functions of the vehicle, and
makes that
computed data available to a memory until or an AVL system.
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In yet another embodiment of the present invention, there is an vehicle that
has
an electrohydraulic control system that permits the user to operate one or
more snow
and ice removal functions. The electronic controller of the system includes an
algorithm
that modifies the electrohydraulic control functions based on whether a
particular tool
uses a single acting or double acting hydraulic cylinder. In particular,
another
embodiment pertains to existing vehicles that have been retrofit with a kit,
and this
feature permits a single set of control algorithms to be used with different
hydraulic
actuators.
Yet another embodiment of the present invention pertains to a vehicle that
includes a system for removing snow and ice from a roadway. Preferably, the
computer
receives a signal corresponding to road temperature. The algorithm can adjust
the rate
at which a granular product (such as salt) is applied to the roadway based on
the
roadway temperature. As one example, the rate at which the spreader applies
the
granular product to the roadway increases with decreasing temperature. In one
embodiment, this relationship is linear.
It will be appreciated that the various apparatus and methods described in
this
summary section, as well as elsewhere in this application, can be expressed as
a large
number of different combinations and subcombinations. All such useful, novel,
and
inventive combinations and subcombinations are contemplated herein, it being
recognized that the explicit expression of each of these myriad combinations
is
excessive and unnecessary.
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DESCRIPTION OF THE DRAWINGS
FIG. 1 is a top, right, and rear photographic representation of a vehicle 20
according to one embodiment of the present invention.
FIG. 2 is a left and rear photographic representation of a vehicle 20
according to
another embodiment of the present invention.
FIG. 3 is a schematic representation of a vehicle control system according to
another embodiment of the present invention.
FIG. 4 includes three mutually orthogonal views of an electrohydraulic
interface
unit 60 according to one embodiment of the present invention.
FIG. 5 is a frontal view of a keypad 80 according to one embodiment of the
present invention.
FIG. 6 is a perspective photographic representation of a joystick 70 according
to
one embodiment of the present invention.
FIG. 7 is a table describing the valves, hydraulic actuators, and tool
functions of a
vehicle according to one embodiment of the present invention.
FIG. 8 is a wiring diagram according to one embodiment of the present
invention.
FIG. 9 is a schematic representation of a portion of a vehicle control system
according to one embodiment of the present invention.
FIG. 10 is a schematic representation of a portion of a vehicle control system
according to one embodiment of the present invention.
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DESCRIPTION OF THE PREFERRED EMBODIMENT
For the purposes of promoting an understanding of the principles of the
inventions, reference will now be made to the embodiments illustrated in the
drawings
and specific language will be used to describe the same. It will nevertheless
be
understood that no limitation of the scope of the inventions is thereby
intended, such
alterations and further modifications in the illustrated device, and such
further
applications of the principles of the inventions as illustrated therein being
contemplated
as wouid normally occur to one skilled in the art to which the inventions
relate.
Various embodiments of the present invention pertain to improvements in the
operation of electrohydraulic controls systems on a vehicle such as a truck.
In
particular, some embodiments pertain to trucks outfitted as snowplows,
although other
embodiments pertain to vehicles with various movable electrohydraulically
actuated
tools.
One aspect of the present invention pertains to a power distribution system
intended to provide control over the electric portion of a medium or large
hydraulic
scheme. The system 40 will consist of a control panel and power distribution
units.
Depending upon the application, up to three power distribution units 50
provide control
to various hydraulic components.
The control panel will communicate with one master power distribution unit
using
PLC (Power Line Carrier) technology. Examples of this technology include power
systems in compliance with SAE Standard J 1939, SAE Standard J 1708, or RS-
485.
These standards are by example only, and are not intended to be limiting.
Additional
power distribution units will communicate with the master over a serial
interface.
PLC technology can send control commands or sensory data through the vehicle
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CA 02618913 2008-01-17
voltage/ground connections anywhere upon the chassis. It can be used on
applications
that otherwise would require multi-conductor connections via traditional
wiring
harnesses. It can also have a positive impact on applications that require
plurality in
control locations. Multiple controls can be connected to the power/ground
"bus"
simultaneously or a single control can be plugged into "stations" throughout
the vehicle.
These could be cigarette lighter powerpoints. Applications involving trailers
that would
otherwise need multiconductor plug connections from truck to trailer greatly
benefit. A
datastream is superimposed on the electrical system at high frequency. Data is
guarded against interference by constant frequency shifting and using digital
protocols
for collision resolution systems that establish priorities for data
"crosstalk."
One embodiment of the present invention includes lighting controls and
joystick
cylinder control. A radio or modem transmitter sends real time location and
application
data to a dispatcher. A GPS receiver tracks the actual truck location. The use
of
pressure compensated hydraulics avoid the "Dead Stick." Electronically
controlled
downside pressure extends blade life. Electronic spreader controls
automatically
control application rate based on ground speed. Data loggers keep track of
changes
that the driver makes. A road and air temperature sensor interface is
included. Some
embodiments of the present invention utilize one or both of these temperature
signals in
a spreader control algorithm. Electronic encoders for material control are
used. In yet
other embodiments the output of the encoders is used only for recording
purposes. In
yet other embodiments material control is accomplished in accurate form with
linear
proportional hydraulic valve. A Pre-Wet Liquid applicator sprays granular
product with
advanced agents.
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One aspect of the present invention pertains to electrohydraulic control
systems
40 that can be retrofitted onto existing vehicles. The vehicles have one or
more tools
that use hydraulic power, such as a plow 22 or dump body 26. An operator
inside the
vehicle actuates the tools to a given position or to operate at a given speed.
Further, it
is understood that other types of hydraulically controlled tools are
contemplated,
including wing plows 24, gratings or grizzlies 28, tailgate augers 30, spinner
32,
conveyor drives 34, spinner drives 36, and front and rear loading buckets.
These tools
are by example only, and are not intended to be limiting.
In some embodiments, the cab of the vehicle 20 includes both a joystick-type
controller 70 and a keypad controller 80. Preferably, both the joystick 70 and
the
keypad 80 can be used to operate some of the same tools. As one example,
movement
of the joystick by the operator commands a tool to move at a rate or velocity
that is
proportional to the distance and direction that the joystick has moved. As
another
example, the keypad can control movement of the same tool in the same
directions, but
at a rate that is fixed. The fixed, predetermined rate is implemented as an
operator
command upon movement of a switch from one position to another position.
In one embodiment, the joystick 70 includes a plurality of buttons 72, 73, and
74
by which various tools of the vehicle can be actuated. In one embodiment,
buttons 72,
73, and 74 are provided for controlling the plow, scraper, and dump body,
respectively.
The vehicle operator selects between plow, dump or scraper operation by
momentarily
pressing the appropriate button on the joystick head. The selection will be
locked in and
displayed on the control panel with a lighted label (Plow, Dump, Scraper).
However,
the buttons of the joystick can be associated with control of any tool, and
are not limited.
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Further, joystick 70 preferably includes a deadman button 71 which provides
safe
operation of the vehicle control system as described later herein.
In some embodiments, one of the data signals from either the joystick 70 or
the
keypad 80 is converted by an electrical interface unit 50 to a command signal.
Preferably, this command signal is transmitted over a vehicle power bus to an
electrohydraulic interface unit 60. Unit 60, in some embodiments, receives
hydraulic
fluid under pressure from a pump operated by a power take-off unit receiving
power
from the vehicle drivetrain.
The spreader or spinner 32 and its associated drive 36 are controlled with a
variety of different programmed functions. The spreader on-off is controlled
by
simultaneously pushing auger and liquid knobs together. The spreader functions
include:
(1) Auto-Man, Blast & Pause Operation:
The operator selects Auto or Manual operation by pressing the Liquid control
and
holding for two seconds and then releasing to see the change. Blast operation
is
initiated by pressing and releasing the Auger control knob. Blast will last a
predetermined time and then normal spreader operation will resume. Pause
operation
of the spreader is initiated by pressing and releasing the Spinner control
knob. Pressing
and releasing the Spinner control knob again resumes spreader operations.
(2) Granular Product Selection Operation:
Up to 3 different granular material products can be selected for calibrated
operation. These are designated Prod 1, 2 & 3 by the system. To change a
Product
selection, the operator holds the Spinner knob before the Spreader function is
turned-
on, and slightly turns the knob either direction. The display shown will
appear. While
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holding the Spinner knob down, the operator turns it either direction to the
desired
Product number and then releases it.
(3) Auto Spreading Operation:
The operator pushes and holds the Liquid control for two seconds and releases
it
to switch from Man to Auto. The AUTO label flashes whenever the MPH is "0" or
there
is no speedometer connection. This also indicates the auger is not turning.
The
operator selects an Auger output by turning the Auger control to increase or
decrease
the display from "00" to "99". If the system has been weight calibrated, then
the number
displayed times 10 indicates the "LBS PER MILE" to be spread in Auto. (Ex.
Display 47
X10 = 470 LBS/MILE). If the system has not been weight calibrated, then the
operator
adjusts the Auger control setting while observing the spread pattern in the
mirrors. The
Auto function will still adjust itself to produce the same pattern at all MPH.
(4) Manual Spreading Operation:
The operator pushes and holds the Liquid control for two seconds and releases
it
to switch from Auto to Man. The operator then adjusts the Auger control for
"00, 10, 20,
30.........90, 99" on the display. These are reference values . The operator
make an
adjustment while observing the pattern in the mirrors. The setting results in
a constant
auger speed regardless of MPH. The operator uses the PAUSE function to stop
and
start at intersections, etc.
Preferably, the vehicle power bus 38 is a 12 volt DC bus, and the command
signal is represented at one or more frequencies superimposed on the 12 volt
DC bus,
such as a powerline communication (PLC) signal transmitted in accordance with
SAE
#J1959. Interface module 50 is capable of receiving multiple command signals,
multiplexing the signals onto the power bus, and demultiplexing these various
command
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signals to produce individual actuation signals. It is understood that various
embodiments of the present invention include one or more electronic control
and/or
data-logging modules. These electronic units are interchangeably referred to
as
modules, units, and controllers. It is understood that the functions of such
devices can
be included in a single physical unit or multiple physical units, on a single
circuit board
or on multiple circuit boards.
Electrohydraulic interface unit 60 receives the demultiplexed actuation
signals
and provides those signals to corresponding electrohydraulic converter
mechanisms.
As one example, hydraulic interfacing at 60 includes at least one converter
that includes
a proportional cylinder that applies a force to a corresponding spool valve,
the force
being in proportion to the actuation signal. The spool valve responds to this
force by
providing hydraulic fluid to an actuation such as a piston and cylinder
actuation that is
coupled to the tool. The spool valve provides hydraulic fluid to the actuation
at a
commanded flow rate or at a commanded pressure.
Some embodiments of the present invention include a safety algorithm that
monitors communication on the PLC power/databus. The primary electronic
control unit
receives command signals from the joystick and keypad, and transmits command
signals via the power/databus to one or more distributed electronic
controllers located
remotely in the vehicle. A remote, distributed controller receives the
command, and
provides the appropriate command output, such as a current drive signal, to
the
electrohydraulic control valves. The distributed controller monitors
communication
traffic on the power/databus, and is programmed to receive messages four times
per
second. Between messages, the distributed controller (MPDU) latches its
command
output to the last command state. If a predetermined number of messages are
missed
CA 02618913 2008-01-17
by the distributed controller, then the distributed controller interrupts all
outputs to
provide safe operation. In one embodiment, the predetermined number of missed
messages is four. In addition, if there is loss of PCL communication, the
primary
electronic controller will provide a visual indication at the control panel
display for loss of
PLC communication. As one example, the touch pads of the display do not change
from green to red when buttons are pushed, and instead remain green.
FIG. 3, 9, and 10 refer to a schematic representation of a vehicle control
system
according to one embodiment of the present invention. Referring first to FIG.
9, some
embodiments of the present invention further include a sensor system 90 which
includes a plurality of sensors and switches 92, signals from which are
received by a
sensor input module 94. Module 94 is in communication via power bus 38 with a
data
capture module 96 that suitably converts the sensor data and provides it to an
RS232
databus, to a memory device 98 to other portions of the control system 40. In
one
embodiment, sensor sweet 92 includes sensors and switches that provide signals
corresponding to the following quantities: liquid flow turbine, hydraulic
motor encoder,
hydraulic pressure, gate elevation, oil temperature, oil level, filter bypass,
no liquid, no
material, dump up, scraper down, wing down, and plow down.
As best represented in FIGS. 3, 9, and 10, some embodiments of the present
invention include a data logging system, which includes means for storing
sensor data
in a readily retrievable format, and also means for transmitting data to an
automatic
vehicle located (AVL) system. The data logging system preferably includes a
base
data-capture and memory storage system 98, and a databus, such as an RS-232
databus for streaming data serially to an AVL system. The data logging system
further
includes a sensor input module 94 and a sensor display 100 for the operator.
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= CA 02618913 2008-01-17
Data capture module 96 captures data representative of the state of the
vehicle
(velocity, odometer reading, position, etc.) and also the setting of the
control system. .
Preferably, the data captured in the data logging system includes: granular
output rate
setting (LBS/MILE in real time); granular product selection (PROD 1-3 in real
time);
truck speed (MPH in real time); liquid output rate setting (CONTROL PERCENTAGE
in
real time); spinner control setting (PERCENTAGE in real time); blast (ON in
real time);
pause (ON in real time); and totals per calendar day and per granular product
selection
(PROD 1-3), including, total granular weight per product; total granular
miles; total
granular minutes; total granular blast weight; total granular blast miles;
total liquid
minutes; and total liquid miles.
The data logging system further includes a real time clock embedded in the
module. The day-date is appended to each of the "Total" files described above.
The
module's memory storage is a "thumb drive" other non-volatile, easily
removable
transportable memory device allowing easy transfer of data to a personal
computer.
Calibrations from the "as is" system are copied to the thumb drive. A truck
identity is
associated to the data files. The module will preferably be located in the
truck cab. The
data format is preferably stored as a comma delimited string. A serial
communication
capacity is used with AVL systems. Data transfer of the "Real Time" values
described
above can occur by a query protocol and/or by constant output stream of at
least once
per second.
In some embodiments, the data capture module is a module located in the
hydraulic valve compartment that reads a variety of sensors and switches 92
that are in
electrical communication with it, either via the PLC or via hardwire.. It
makes the sensor
information available for extended data-logging fields and for display to the
operator.
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Some of the data available includes: hydraulic oil temperature, hydraulic oil
level, filter
bypass, road temperature, air temperature, hydraulic pressure, spreader
material, gate
elevation, plow down, wing down, and scraper down. Preferably, the data stored
and
made available for transmission by the data logging system complies with
governmental
specifications, including specifications by the Administrative Transportation
of Ontario
Province, Canada.
Preferably, the control module further reacts to out of range values for
various
levels of input data. As one example, if a sensor 92 indicates that the
hydraulic oil level
is low, then controller module 50 disengages (by relay) the appropriate
hydraulic pumps
or shifts the appropriate diverter valve.
In one embodiment, the present invention includes a display such as an
LCD display mounted within site of the vehicle operator. Display 100 includes
indicator
lights with digital representations or analog representations from the sensor
system 90.
Various warning levels will be associated with many of the sensor signals and
switch
positions, and display 100 will preferably indicate any perimeters outside of
these limits
by various visual or audible flags. Further, in one embodiment, the display is
a touch
screen, and the vehicle electronic system includes an algorithm for
programming critical
temperatures of road temperature and air temperature. Exceeding these ambient
conditions also result in actuation of a visual or audible alarm.
Although details of various features of the control system are shown and
described, it is understood that these are only by example, and are not
limiting to the
inventions. As one example, a control system according to another embodiment
of
present invention can be implemented on new vehicles as OEM equipment. In yet
other
embodiments the operator inputs can include, instead of a joystick, any type
of
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switching device that can be moved in a direction over a range of positions,
including
slide switches and rotary switches. In yet other embodiments, keypad 80 can
include,
rather than manual switches, a touch screen or voice-activated functions. In
yet other
embodiments where the vehicle tools are pneumatically operated, there would
also be a
corresponding electropneumatic interface unit replacing the electrohydraulic
interface
unit. Further, other embodiments of the present invention contemplate the use
of
dedicated communication buses, rather than using commands implemented via PLC
on
a power bus.
The following pages will describe other elements, features, and aspects of
different embodiments of the present invention. It is understood that all of
the
descriptions herein are by example only, and are not intended to be limiting.
In some embodiments of the present invention the system controls pertain to:
Cab-to-Valve Connection: Commands from the system controls to the system
valves are preferably digitally encoded and sent over the vehicle electrical
system using
only a 12VDC and Ground connection at each end of the system.
Valve Driver Modules: The valve driver modules are preferably housed in
Deutsch boxes and employ Deutsch connectors at the solenoids giving IP69
environmental rating.
The Driver Modules are preferably equipped with current sensing control to (1)
offset thermal changes in solenoid performance, (2) to detect open or short
circuit
conditions and protect against the latter by automatic interruption of current
to the
shorted output.
Cylinder Controls (Pushbutton) via Keypad 80: Momentary pushbutton switches
will provide on-off style control of the plow and dump body operations.
Program
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settings will provide effective and independent flow trims for plow up-down,
plow angle
and dump up-down.
Cylinder Controls (Joystick 70): A two axis proportional joystick with deadman
switch and pushbutton selection of equipment (i.e. Plow, dump hoist, etc.) are
preferably provided. The joystick employs dual redundant hall-effect
mechanisms,
minimizing the wear of potentiometer or other contact mechanisms. In the event
of
failure of one hall-effect output a program adjustment to the system
Controller will allow
selection of the alternate channel. The same Controller will also provide
electronic
adjustment of: (1) degrees from center for operation (deadband), (2) minimum
valve
drive at minimum joystick deflection, (3) maximum valve drive at maximum
joystick
deflection. Adjustments 2 & 3 will be independent for each the plow and dump.
The
joystick plug to the control panel as its only connection point. Connection of
the joystick
will render the pushbutton cylinder controls inoperable. Conversely,
disconnection of the
joystick will reactivate the pushbutton controls. Selection of equipment
function by
pushbuttons on the head of the joystick will illuminate an equipment identity
label on the
control panel. No operation of the joystick can take place without holding the
deadman
switch.
To disable the pushbuttons, press the plow up and down simultaneously and
hold for 5 seconds. The keypad lighting will switch from green to red. The
buttons will
remain red but will not operate. Repeat holding the plow up and down to
reinstate the
controls. To disable the joystick hold the plow and scraper selection buttons
simultaneously for 5 seconds. The Plow, Dump and Scraper labels on the panel
will go
off. The joystick is now dead. Repeat the sequence to reinstate joystick
control.
In some embodiments of the present invention the spreader controls pertain to:
CA 02618913 2008-01-17
a) Modes of Operation: Automatic and Manual control are preferably selectable.
b) Pause & Blast: There are preferably a Blast operation with programmable
selection of level and time. A Pause operation are preferably available to
momentarily
disable the spreader operation.
c) Open-Loop Servo: A feedback sensor is not required to achieve accurate and
consistent operation of the spreader functions.
d) Displays 86, 87, 88: High brightness LED numerical displays will be used to
indicate one of 11 reference control positions for the spinner and auger
(manual mode).
In Auto operation the auger display will indicate "pounds per mile" if the
system has
been calibrated for such.
Fault Displays: The system displays occurrences of shorted or open outputs at
the valves with indication of which circuit is responsible.
Liquid Operation: The system includes control for the operation of a pre-
wetting
liquid function. The control of this function are preferably operable as a
groundspeed
proportional output or as a strictly manual control. A LED numerical display
will indicate
the output of this system by reference numbers. The Liquid Pre-wet On-Off is
controlled
by simultaneously pushing the Liquid and Spinner knobs together.
Some embodiments of the present invention include a software algorithm in the
vehicle's computer controller that adjusts the spreader control based on road
temperature when the spreader control is in the AUTO mode. The algorithm would
vary
the auger rate as a percentage of its operation in accordance with the
variance of road
temperature about a target value. The percentage of change can be set by the
user, as
well as the target value of road temperature, and the upper and lower limits
on road
temperature. In one embodiment, the change in auger operation is linearly
related to
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variation and road temperature. Preferably, the slope of this relationship is
in the range
of about 0.5 percent/degree to about 2 percent/degree. As one example, the
desired
auger output (expressed as 100 percent) would be established at a target
temperature
such as 27.5 degrees F. For each degree that road temperature is below 27.5
degrees,
the output of the auger is changed (preferably raised) about 1 percent.
In some embodiments of the present invention the control definitions pertain
to:
Cylinder operations: Momentary pushbutton control.
Auger/Spinner operations: Rotary control input with marked positions or
momentary increase/decrease pushbutton and with a numerical or bargraph
indicator of
output magnitude.
Blast operation: A momentary pushbutton that increases the auger drive to
maximum while depressed and maintains that operation after release for an
adjustable
time delay of 0-30 seconds. .
Pass or Pause operation: A momentary pushbutton that interrupts the spreader
operation while depressed.
Spreader On/Off: Alternate push on/push off control of the spreader operation.
The Spreader On/Off is controlled by simultaneously pushing the Auger and
Liquid
knobs together.
Auto/Manual Spreader operation: Alternate pushbutton selection of Auto
(groundspeed proportional) operation of the spreader or Manual (no groundspeed
proportioning). Automatic operation should automatically drop the auger and
spinner
drives at 0 MPH.
Pre-Wet operation: Pushbutton On/Off control. Momentary pushbuttons or rotary
controls for increasing and decreasing the motor/pump speed. Similar to the
spreader
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controls. If pushbuttons are used then a numerical or bargraph display of the
drive
magnitude is required. The pre-Wetting drive is proportional to the vehicle
speed. The
pre-wetting systems includes one or more tanks, spray bars, and pumps for pre-
wetting
the granular material.
Controls Summary: the control system preferably includes capability to perform
the following functions: Spreader On/off, Auger increase/decrease, Spinner
increase/decrease, Blast, Pass or Pause, Plow raise, Plow lower, Plow left,
Plow right,
Dump raise, Dump lower, Pre-Wet On/off, and Pre-Wet increase/decrease. The
Plow
and Dump Keypad On-Off is controlled from the ignition on-off.
Adjustability/Programmability: Operating parameters such as the spreader
minimum/maximum trims described before and others described below can be
adjusted
in the user calibration program. . The operating parameters include: Spreader
valve
minimum/maximum trims, Pre-Wet motor minimum/maximum trims, Blast time-out
delay, Speedometer input calibration, and Single/Double acting cylinder
operations (as
indicated in Fig. 7).
Control system 40 includes a plurality of different adjustment capabilities.
To
enter the adjustment mode, with the spreader control off - the operator
presses the
Auger and Spinner knobs together and holds for two seconds. After the
controller
powers up in the Adjustment Mode (CA), the operator enters a Pass Code using
the
Liquid and Spinner displays and knobs (pressing the Spinner knob to enter the
value). If
the wrong value is entered, the screen will go blank.
The user scrolls through the menu of keypad 80 in the following manner. After
entering the proper passcode the first line of the menu of adjustments will
appear as
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shown. The user may scroll through the menu items by turning the Auger control
knob.
The menu items preferably include the following:
Auger (Min) Lo and Auger (Max Hi): Auger LO sets the lowest speed available to
the operator. It should be high enough to cause the Auger or Conveyor to turn.
The
operator turns the Spinner knob to adjust the value and then presses to enter.
Auger HI
sets the highest speed available to the operator. The operator turns the
Spinner knob to
adjust the value and then presses to enter.
Spinner (Min) Lo and Spinner (Max Hi): Spinner LO sets the lowest speed
available to the operator. It should be set high enough to cause Spinner
movement.
The operator turns the Spinner knob to adjust the value and then presses to
enter.
Spinner HI sets the highest speed available to the operator. The operator
turns the
Spinner knob to adjust the value and then presses to enter.
Liquid (Min) Lo and Liquid (Max) Hi: Liquid LO sets the lowest output flow
available to the operator. It should be set high enough to cause some flow.
The
operator urns the Spinner knob to adjust the value and then presses to enter
Liquid HI
sets the highest output flow available to the operator. The operator turns the
Spinner
knob to adjust the value and then presses to enter
Blast Timer and Level Settings: Blast (to) sets the Time-Out function on Blast
operations. This can be set for 0-30 seconds of operation after the Blast
button is
released. The operator uses the Spinner knob to select and pushes to enter the
value.
Blast HI sets the Auger or Conveyor speed for the Blast operation. This can be
0-99%
of full capacity. The operator uses the Spinner knob to select and pushes to
enter the
value.
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CA 02618913 2008-01-17
Speedometer Input Type: GS or Groundspeed is asking for the type of
speedometer input. The user is presented with options for choosing the type of
transmission provided in their vehicle, such as for Allison or International
Transmissions.
Speedometer MPH Matching: GS CA is the Groundspeed Calibration. It is used
to synchronize the control system to the truck. The operator adjusts the
Spinner display
to a target MPH, drives the truck until the target speed is reached, and holds
steady.
The operator then pushes the Spinner knob while the truck is at the target
speed and
checks the results by slowing and reaccelerating. The Spinner display will
blink and an
audible tone will be heard when the speed matches again.
Weighted Dump Calibration: The operator fills the truck with material, weighs
it,
and positions the truck to discharge material. The hydraulic pump should be
operating
and the engine speed should be at least 1500 RPM. The operator sets the Auger
(rt)
rate on the Spinner display to a mid-level value (30-70) and presses the
Spinner knob to
start the dump process. The operator then pushes the Spinner knob again to
stop the
dump process, reweighs the truck and subtracts from the first weight to
determine the
dumped pounds of material. The operator enters the dumped pounds using the
Liquid
and Spinner knobs and displays and pushes the Spinner knob to enter the value.
Plow and Dump Cylinder Type: If the Plow lift cylinder is single-acting set
the
Spinner display for 1. If it is a double-acting cylinder set it for 0. Press
the Spinner knob
to enter the value. If the Dump hoist cylinder is single-acting set the
Spinner display for
1. If it is a double-acting cylinder set it for 0. Press the Spinner knob to
enter the value.
The valves of the electrohydraulic control unit are configured in advance for
single or
double acting cylinder operations. This program selection allow for the
microcontroller
CA 02618913 2008-01-17
to apply hydraulic power for retraction of double acting cylinders, or not
apply hydraulic
power for retraction of single acting cylinders (i.e., gravity down).
Plow (Min) Lo and Plow (Max Up and Down) dr: For Joystick users, the Plow LO
and (dr) will set the low and high Plow (up & down) flows for the travel of
the Joystick.
The operator sets each on the Spinner display and pushes the Spinner knob to
enter
the values. For Keypad users, the Plow LO serves no function and can be
ignored. The
Plow (dr) "drive" will allow trimming the flow or speed of the Plow (up &
down) operation
when those keypads are pressed. The operator sets a value on the Spinner
display and
pushes the Spinner knob to enter.
Plow Angle (Max left & right) dr: This setting allows for trimming the speed
of the
angle operation when the joystick is full left or right. It also determines
the speed of the
angle operation when the left and right arrowed pushbuttons are used on the
keypad
control. The operator adjusts the value in the Spinner window with the Spinner
knob
and pushes the Spinner knob to install the setting into the system.
Dump (Min Lo and Dump (Max) dr: For Joystick users, the Dump LO and (dr)
will set the low and high Dump flows for the travel of the Joystick. The
operator sets
each on the Spinner display and pushes the Spinner knob to enter the values.
For
Keypad users, the Dump LO serves no function and can be ignored. The Dump (dr)
"drive" will allow trimming the flow or speed of the Dump operation when those
keypads
are pressed. The operator sets a value on the Spinner display and pushes the
Spinner
knob to enter.
Joystick Deadband: This adjustment will determine the sensitivity of the
Joystick
as it is moved off center. The operator sets the Spinner display for 0-5 to
determine
how far from center the Joystick should be moved before operation begins.
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CA 02618913 2008-01-17
Backup Joystick Channels (Up and Down) The joystick has the feature of having
two sets of output mechanisms. If the primary channel fails the operator has
the
recourse of switching to the backup channel to "repair" the joystick. If the
operator loses
operation on the raise-lower function "Fb" (forward-back) he can select
"channe{ 1" to
restore function. "Channel 0" is the factory default or primary. The operator
uses the
Spinner knob, displays to change channels, and pushes the spinner knob after
the
selection to lock it in.
Backup Joystick Channels (Left an Right): A backup channel is also assigned to
the left-right function of the joystick. (See preceding instruction) The
operator selects
"channel 1" if experiencing a problem with the left-right joystick operation.
"Channel 0" is
the factory default and primary channel. The operator uses the Spinner knob,
displays
to change to "channel 1," and locks in the setting by depressing the Spinner
knob.
Product 2 and 3 Weight Ratios: The product used to perform the Weighed-dump
calibration is Product 1 and is the reference product. The weight ratio of
Product 2 and
Product 3 as compared to Product 1 can be entered as a percentage 50-150% on
the
Spinner display and entered by pushing the Spinner knob. Example: If the
weight of
Product 2 is half of Product 1 enter 50. If Product 3 is 20% heavier than
Product 1, enter
120.
Auto Mode Take Off Timer The AUTO mode has a (to) take-off timer that will
cause the Auger speed to operate at the Blast level for however many seconds
have
been set on this feature whenever the truck starts from 0 MPH. The operator
sets the
Spinner display for 0-9 seconds and pushes the Spinner knob to enter the
value.
In some embodiments of the present invention the functional description
pertains
to:
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CA 02618913 2008-01-17
Control Panel 80 The panel will control outputs at power distribution units,
display measurements and settings, provide diagnostic feedback, and allow
access to
the calibration menu. The following items describe the inputs, outputs, and
functionality
of the control panel.
AUGER label backlight 86 - yellow; Illuminates yellow when power is supplied
to
the control panel, remains on when the spreader is turned on. Illuminates
yellow and
flashes if the auger output is open, or the rated current for the auger output
has been
exceeded.
LIQUID label backlight 87 - yellow: Illuminates yellow when power is supplied
to
the control panel, remains on when the spreader is turned on. Illuminates
yellow and
flashes if the liquid output is open, or the rated current for the liquid
output has been
exceeded.
SPINNER label backlight 88 - yellow: Illuminates yellow when power is supplied
to the control panel, remains on when the spreader is turned on. Illuminates
yellow and
flashes if the spinner output is open, or the rated current for the spinner
output has been
exceeded.
Auger Rate Display 86 - Red seven segment : Spreader Auto Mode - Displays
the auger dispense rate in 10*Ibs/mile. The displayed value will range from 00
to 80 with
a resolution of 05. Spreader Manual Mode - Displays reference value that
corresponds
to the auger dispense rate. A reference value of 10 will correspond to the
auger
minimum trim value, while a value of 99 will correspond to the auger maximum
trim
value. The displayed value will range from 00 (off) to 99(maximum trim) in
increments of
10.
Liquid Rate Display 87 - Red seven segment: Displays reference value that
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CA 02618913 2008-01-17
corresponds to the liquid dispense rate. A reference value of 10 will
correspond to
10/100*auger reference value * trimmed liquid range, while a value of 99 will
correspond
to 99/100*auger reference value * trimmed liquid range. The displayed value
will range
from 00 (off) to 99(maximum trim) in increments of 10.
Spinner Rate Display 88 - Red seven segment: Displays reference value that
corresponds to the spinner dispense rate. A reference value of 10 will
correspond to the
spinner minimum trim value, while a value of 99 will correspond to the spinner
maximum
trim value. The displayed value will range from 00 (off) to 99(maximum trim)
in
increments of 10.
Auger Rate Knob 81 - Rotary encoder with spst pushbutton: Simultaneously
pressing the auger rate knob along with the liquid rate knob will enable the
auger and
spinner outputs (spreader). Upon enabling the auger and spinner, the auger
rate display
and spinner rate display will turn on at a value of 00 (off). Upon being
enabled, the
auger and spinner outputs will correspond to the display readings and will be
off.
Pressing the auger rate knob will set the auger output to the "blast level" as
defined in the calibration settings. The auger rate display will display "bL"
during a blast
event. The blast level will be maintained for as long as the button is
depressed, and will
continue after the button is released for the "blast time out" period as
defined in the
calibration menu. During a blast event, if the auger rate knob is pressed
before the
"blast time out" period has expired, the blast event will be interrupted, and
the auger will
return to the pre-blast value.
Spreader Auto Mode - Turning the auger rate knob clockwise will increase the
dispensed material rate in 50lbs/mile increments. The auger output will supply
the
current to dispense the displayed rate output. When the maximum value of 800
lbs/mile
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CA 02618913 2008-01-17
is reached, the rate value will remain at 800 regardless of further clockwise
turns.
Turning the auger rate knob counterclockwise will decrease the dispensed
material in
501bs/mile increments. When the minimum value of 00 lbs/mile is reached, the
value will
remain at 00 regardless of further counterclockwise turns.
Spreader Manual Mode - Turning the auger rate knob clockwise will increase the
displayed reference value in increments of 10. The auger output will provide
output
current corresponding to the reference value. When the maximum value of 99 is
reached, the value will remain at 99 regardless of further clockwise turns.
Turning the
auger rate knob counterclockwise will decrease the reference value in
increments of 10.
When the minimum value of 00 is reached, the value will remain at 00
regardless of
further counterclockwise turns.
With the spreader enabled, simultaneously pressing the auger rate knob along
with the liquid rate knob will disable the auger and spinner outputs
(spreader). If
enabled, the liquid output will also be disabled. The auger, liquid and rate
displays, will
turn dark.
Liquid Rate Knob 82 - Rotary encoder with spst pushbutton: Simultaneously
pressing the liquid rate knob along with the spinner rate knob will enable the
liquid
output. The liquid rate display will turn on with a value of 00 (off). Upon
being enabled,
the liquid output will correspond to the display reading and will be off. If
the spreader is
off, pressing the liquid and spinner rate knobs will not enable the liquid
output, and the
liquid display will remain dark.
Pressing and releasing the liquid rate knob will toggle the mode of the
spreader
between the "AUTO" and "MANUAL" settings. The switch should be depressed and
held
for >1sec to change settings.
CA 02618913 2008-01-17
Turning the liquid rate knob clockwise will increase the displayed liquid
reference
value in increments of 10. When the maximum value of 99 is reached, the value
will
remain at 99 regardless of further clockwise turns. Turning the auger rate
knob
counterclockwise will decrease the reference value in increments of 10. When
the
minimum value of 00 is reached, the value will remain at 00 regardless of
further
counterclockwise turns. The liquid output provides output current that is a
percentage of
the trimmed liquid output range equal to the liquid reference value/100 *
reference
auger value.
With the liquid output enabled, simultaneously pressing the liquid rate knob
along
with the spinner rate knob will disable the liquid output. When disabled, the
liquid rate
display will turn dark.
Spinner Rate Knob 83 - Rotary encoder with spst pushbutton: Turning the
spinner rate knob clockwise will increase the reference value in increments of
10. The
spinner output will provide output current corresponding to the reference
value. When
the maximum value of 99 is reached, the value will remain at 99 regardless of
further
clockwise turns. Turning the auger rate knob counterclockwise will decrease
the
reference value in increments of 10. When the minimum value of 00 is reached,
the
value will remain at 00 regardless of further counterclockwise turns.
Pressing and releasing the spinner rate knob will pause the spreader, causing
the auger, liquid, and spinner outputs to turn off. The auger rate, liquid
rate, and spinner
rate displays will display PA US E. Once paused, pressing the liquid rate knob
again will
un-pause the spreader, returning the auger, spinner, and liquid outputs to
their pre-
pause values.
With the spreader off, pressing, holding and turning the spinner rate knob,
will
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CA 02618913 2008-01-17
allow the user to select the dispense product as 1, 2, or 3. The button should
first be
pressed for > 1 second. PR Od will be displayed in the auger rate and liquid
display's
along with the current product 01, 02, or 03 in the spinner rate display.
Turning the
spinner rate knob will cycle through the 3 values. Upon selecting the desired
value, and
releasing the button, the new product will be used, and the display will
return to previous
settings. Product ratio 1 will be 1:1 with the calibrated dispense rate,
product ratio 2 and
3 will be the ratio entered in the respective calibration menu items.
AUTO label backlight - yellow: Illuminates yellow when the spreader is in
automatic mode with groundspeed signal. Automatic mode is the default spreader
mode
upon power up. Flashes yellow when the spreader is in automatic mode with no
groundspeed signal.
MAN label backlight - yellow: Illuminates yellow when the spreader is in
manual
mode.
PLOW label backlight - yellow: Illuminates yellow when the joystick is in the
plow mode. Plow mode is the default joystick mode upon power up. Illuminates
yellow
and flashes if a plow output is open, or the rated current for a plow output
has been
exceeded.
DUMP label backlight - yellow: Illuminates yellow when the joystick is in the
dump mode. Illuminates yellow and flashes if a dump output is open, or the
rated
current for a dump output has been exceeded.
SCRAPER label backlight - yellow: Illuminates yellow when the joystick is in
the
scraper mode. Illuminates yellow and flashes if a scraper output is open, or
the rated
current for a scraper output has been exceeded.
Plow down pushbutton 84.1 - momentary spst switch : If a joystick is present
at
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CA 02618913 2008-01-17
power on, the backlight remains dark and the pushbutton is ignored until the
joystick is
removed and power is cycled.
If the button is pressed at power on, the backlight will remain dark and the
button
press will be ignored until released and pressed again. If no joystick is
present at power
on, the backlight illuminates green, and the button is monitored. If pressed,
the plow
down backlight changes from green to red, and a single audible beep is
generated. The
plow flow control output is set to the flow control valve drive value as
defined in the
calibration menu. The unloader output is turned on, and the plow down output
is turned
on. When the button is released the three outputs will turn off and the
backlight will
return to green. If an open output or over current is detected at the plow
down output
while the button is pressed, the plow down output will turn off and the button
backlight
will flash red and dark with audible beeps.
Plow left pushbutton 84.2 - momentary spst switch: If a joystick is present at
power on, the backlight remains dark and the pushbutton is ignored until the
joystick is
removed and power is cycled. If the button is pressed at power on, the
backlight will
remain dark and the button press will be ignored until released and pressed
again. If no
joystick is present at power on, the backlight illuminates green, and the
button is
monitored. If pressed, the plow left backlight changes from green to red, and
a single
audible beep is generated. The plow flow control output is set to the flow
control valve
drive value as defined in the calibration menu. The unloader output is turned
on, and the
plow left output is turned on. When the button is released the three outputs
will turn off
and the backlight will return to green. If an open output or over current is
detected at
the plow left output while the button is pressed, the plow left output will
turn off and the
button backlight will flash red and dark with audible beeps.
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CA 02618913 2008-01-17
Plow right pushbutton 84.3 - momentary spst switch: If a joystick is present
at
power on, the backlight remains dark and the pushbutton is ignored until the
joystick is
removed and power is cycled. If the button is pressed at power on, the
backlight will
remain dark and the button press will be ignored until released and pressed
again. If no
joystick is present at power on, the backlight illuminates green, and the
button is
monitored. If pressed, the plow right backlight changes from green to red, and
a single
audible beep is generated. The plow flow control output is set to the flow
control valve
drive value as defined in the calibration menu. The unloader output is turned
on, and the
plow right output is turned on. When the button is released the three outputs
will turn off
and the backlight will return to green. If an open output or over current is
detected at
the plow right output while the button is pressed, the plow right output will
turn off and
the button backlight will flash red and dark with audible beeps.
Plow up pushbutton 84.4 - momentary spst switch: If a joystick is present at
power on, the backlight remains dark and the pushbutton is ignored until the
joystick is
removed and power is cycled. If the button is pressed at power on, the
backlight will
remain dark and the button press will be ignored until released and pressed
again. If no
joystick is present at power on, the backlight illuminates green, and the
button is
monitored. If pressed, the plow up backlight changes from green to red, and a
single
audible beep is generated. The plow flow control output is set to the flow
control valve
drive value as defined in the calibration menu. The unloader output is turned
on, and the
plow up output is turned on. When the button is released the three outputs
will turn off
and the backlight will return to green. If an open output or over current is
detected at
the plow up output while the button is pressed, the plow up output will turn
off and the
button backlight will flash red and dark with audible beeps.
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CA 02618913 2008-01-17
Dump down pushbutton 85.1 - momentary spst switch: If a joystick is present at
power on, the backlight remains dark and the pushbutton is ignored until the
joystick is
removed and power is cycled. If the button is pressed at power on, the
backlight will
remain dark and the button press will be ignored until released and pressed
again. If no
joystick is present at power on, the backlight illuminates green, and the
button is
monitored.
If pressed, the dump down backlight changes from green to red, and a
continuous audible beep is generated. The unloader output is turned on, and
the hoist
down output is set to the dump hoist valve drive value as defined in the
calibration
menu. When the button is released the two outputs will turn off and the
backlight will
return to green. If an open output or over current is detected at the hoist
down output
while the button is pressed, the hoist down output will turn off and the
button backlight
will flash red and dark with audible beeps.
Dump up pushbutton 85.2 - momentary spst switch: If a joystick is present at
power on, the backlight remains dark and the pushbutton is ignored until the
joystick is
removed and power is cycled. If the button is pressed at power on, the
backlight will
remain dark and the button press will be ignored until released and pressed
again. If no
joystick is present at power on, the backlight illuminates green, and the
button is
monitored.
If pressed, the dump up backlight changes from green to red, and a continuous
audible beep is generated. The unloader output is turned on, and the hoist up
output is
set to the dump hoist valve drive value as defined in the calibration menu.
When the
button is released the two outputs will turn off and the backlight will return
to green. If
an open output or over current is detected at the hoist up output while the
button is
CA 02618913 2008-01-17
pressed, the hoist up output will turn off and the button backlight will flash
red and dark
with audible beeps.
Joystick 70 with pushbutton inputs 71, 72, 73, 74 - A locking connector at the
back of the control panel housing will allow for connection of a sensor such
as a Penny
Giles joystick part# JC6000-XY-HMM-M-S-NL-N-STN-A30D. The joystick will allow
control over three hydraulic functions, the plow, hoist, or scraper.
At the joystick input if more than one deflection axis is selected, the
largest value
will take priority, and the smaller value will be ignored. The joystick will
not respond to
angle deflection in any direction that is less than the joystick neutral dead
band range as
defined in the calibration menu. During operation of the joystick, if the user
releases the
dead man's trigger, any associated output will be turned off. The joystick
should then be
returned to the center position before the output can be re-enabled by pulling
the dead
man trigger, and deflecting the joystick. The joystick will be ignored unless
connected
to the control panel before power is applied.
The joystick will default to PLOW control upon power up, causing the PLOW
label at the control panel to illuminate. The trigger (dead man) switch is
pulled and held
while the joystick is in the center position, or any joystick movement will be
ignored. If
the trigger switch is released after the start of a joystick movement, any
output will be
turned off.
Pressing 1 of the three pushbutton switches on the top of the joystick will
change
the function control of the joystick. The joystick is in the center position
or the button
press will be ignored. Pressing and releasing the top right button will
produce a single
audible beep and change the function control mode of the joystick to the
scraper. The
scraper label on the control panel will illuminate.
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CA 02618913 2008-01-17
Scraper control mode - Moving the joystick away from the user will turn on the
scraper down output, and set the flow control output current to a value
corresponding to
the angle deflection of the joystick. Moving the joystick towards the user
will turn on the
scraper up output, and set the flow control output current to a value
corresponding to
the angle deflection of the joystick. Moving the joystick to the left will
turn on the scraper
left output, and set the flow control output current to a value corresponding
to the angle
deflection of the joystick. Moving the joystick to the right will turn on the
scraper right
output, and set the flow control output current to a value corresponding to
the angle
deflection of the joystick.
Pressing and releasing the bottom middle button will produce a continuous
audible beep and change the function control mode of the joystick to dump. The
audible
beep will continue for as long as the joystick is in the dump control mode.
The dump
label on the control panel will illuminate. Once in the dump mode, if the
joystick remains
in the neutral position for greater than 30 seconds, the mode will
automatically change
to plow.
Dump control mode - Moving the joystick away from the user will set the hoist
down output current to a value corresponding to the angle deflection of the
joystick.
Moving the joystick towards the user will set the hoist up output current to a
value
corresponding to the angle deflection of the joystick.
Pressing and releasing the top left button will produce a single audible beep
and
change the function control mode of the joystick to plow. The plow label on
the control
panel will illuminate.
Plow control Mode - Moving the joystick away from the user will turn on the
plow
down output, and set the flow control output current to a value corresponding
to the
32
CA 02618913 2008-01-17
angle deflection of the joystick. Moving the joystick towards the user will
turn on the
plow up output, and set the flow control output current to a value
corresponding to the
angle deflection of the joystick. Moving the joystick to the left will turn on
the plow left
output, and set the flow control output current to a value corresponding to
the angle
deflection of the joystick. Moving the joystick to the right will turn on the
plow right
output, and set the flow control output current to a value corresponding to
the angle
deflection of the joystick.
Calibration Menu - Accessing the calibration menu will the completion of a
startup sequence and entry of a 4-digit user pass code. After power is applied
to the
system, but before the spreader is enabled, simultaneously pressing the blast
(auger
rate knob), liquid rate knob, and pause (spinner rate knob) buttons allows
entry of the
pass code. The buttons is held for > 2sec. After the sequence is performed,
the auger
display will read CA, and the liquid and spinner displays will read from left
to right a 4-
digit value of 0000. Rotating the liquid rate knob clockwise will increase the
2 most
significant digits value in 1-step increments. Rotating the liquid rate knob
counterclockwise will decrease the value in 1-step increments. Rotating the
spinner rate
knob clockwise will increase the 2 least significant digits value in 1-step
increments.
Rotating the spinner rate knob counterclockwise will decrease the value in 1-
step
increments. Upon reaching the desired pass code, the user will press and
release the
spinner rate knob. If the pass code is incorrect, the auger, liquid, and
spinner displays
will go dark and the user should repeat the startup sequence. A factory master
pass
code of 5555 will allow entry into the calibration menu.
Once in the calibration menu of Table 1, items listed below may be accessed
for
calibration. Scrolling through the menu items is accomplished by turning the
auger rate
33
CA 02618913 2008-01-17
knob. Unless otherwise noted, turning the spinner rate knob allows selection
of the
value, and pressing the spinner rate knob updates the value in memory.
Table 1
MENU ITEM AUGER LIQUID SPINNER DISPLAY
DISPLAY DISPLAY
Auger Min Trim AU LO VALUE (0-99)
Auger Max Trim AU HI VALUE (0-99)
Spinner Min Trim SP LO VALUE (0-99)
Spinner Max Trim SP HI VALUE (0-99)
Liquid Min Trim LI LO VALUE (0-99)
Liquid Max Trim LI HI VALUE (0-99)
Groundspeed input GS VALUE (0-2)
Selection
Blast Time Out Seconds BL TO VALUE (0-30)
Blast Level BL HI VALUE (0-99)
Speedometer GS CA VALUE (10-40)
calibration/verification
Auger rate calibration AU RT VALUE (0-10)
Liquid PWM Frequency Hz LF VALUE (50-200)
- 50-200
Flow Control Valve Drive FC DR VALUE (0-99)
Dump Hoist Valve Drive DH DR VALUE (0-99)
Flow Control Min Trim PF LO VALUE (0-99)
Flow Control Max Trim PF HI VALUE (0-99)
Hoist up Min Trim HU LO VALUE (0-99)
Hoist up Max Trim HU HI VALUE (0-99)
Hoist down Min Trim HD LO VALUE (0-99)
Hoist down Max Trim HD HI VALUE (0-99)
Joystick neutral Dead band JY DB VALUE (0-5)
Product 2 material ratio PR 02 VALUE (0.5-1.5)
Product 3 material ratio PR 03 VALUE (0.5-1.5)
Pass code change PC VALUE (0-9999)
Auto Mode Takeoff AM TO VALUE (0-9)
Exit menu EX IT
With regards to speedometer calibration, Upon entering this menu item, the
user
will turn the spinner rate knob to set the desired MPH value for calibration
or verification.
If the user desires to re-calibrate, they should accelerate the vehicle to the
selected
MPH value. While maintaining the selected vehicle speed pressing the spinner
rate
34
CA 02618913 2008-01-17
knob will complete calibration. If the present speed of the vehicle reaches
the displayed
MPH value(based upon the present calibration value), the MPH value will flash.
With regards to auger rate calibration, this calibration includes 3
operations, start
cal, stop cal, and enter dispensed material weight. Start Cal - Upon entering
this menu
item, the user will turn the spinner rate knob to set the reference value for
the auger
speed, and press the spinner rate button. The auger output will provide output
current
corresponding to the reference value. Stop Cal - The user will press the
spinner rate
button again to stop the auger output. The display will show "LB VALUE (0000-
5000)." Enter weight - Next the auger rate display will read LB, with the
liquid and
spinner displays reading 00 and 00. The user will turn the liquid rate knob
clockwise to
increase and counter clockwise to decrease (1 step increments), until the
liquid display
digits match the 2 most significant digits of the dispensed material weight in
pounds.
The user will turn the spinner rate knob clockwise to increase and counter
clockwise to
decrease (1 step increments), until the spinner display digits match the least
significant
digits of the dispensed material weight in pounds. The user will again press
the spinner
rate knob to complete calibration. The liquid rate knob controls 2 MSD, the
spinner rate
knob controls 2 LSD.
With regards to the Product2 material ratio, - This is a ratio of the dispense
rate
for a product as compared to the dispense rate of the product used during the
auger
calibration. With regards to the Product3 ratio, - This is a ratio of the
dispense rate for a
given product as compared to the dispense rate of the product used during the
auger
calibration.
CA 02618913 2008-01-17
In some embodiments of the present invention the master power distribution
unit
and electrical interface unit 50 pertain to:
The master power distribution unit 50 will monitor inputs, provide outputs,
send
commands to the control panel, accept commands from the control panel, and
control
any slave power distribution units. Output functionality, where applicable
will perform
according to the hydraulic function chart on the last page. The following
items describe
the input and output requirements for the MPDU.
Ground Speed Input: Input voltage range will be 1 VPP to 100VPP sinusoidal or
square wave input. Configurable as DC coupled sinking input, DC coupled
sourcing
input, and AC coupled input as defined in the calibration menu.
Serial Input Port: Pins allocated on one side of the 24 pin Deutsch connector
will
allow for serial programming of the MPDU in the field.
Serial Output port: Pins allocated on one side of the 24-pin Deutsch connector
will provide serial communications between the master and any slave devices.
Unloader Output: Provides fixed unregulated voltage source of up to 3 ampere
at the unloader output pin. Refer to attached hydraulic function chart for
output
activation.
Spinner Output: Provides pwm regulated current source of up to 3 ampere at the
spinner valve output pin. The current value is determined by the spinner rate
setting at
the front panel. The pwm output frequency is fixed at 100Hz.
Auger Output: Provides pwm regulated current source of up to 3 ampere at the
auger output pin. The current value is determined by the auger rate setting at
the front
panel. The pwm output frequency is fixed at 100Hz.
Plow Flow Control Output: Provides pwm regulated current source of up to 3
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CA 02618913 2008-01-17
ampere at the plow flow control output pin. The current value is determined by
the
joystick deflection angle or the flow control valve drive value as defined in
the calibration
menu. The pwm output frequency is fixed at 100Hz.
Liquid Motor Control Output: Provides pwm regulated current source of up to 8
ampere at the liquid motor output pins (2 required). The current value is
determined by
the liquid, and auger rate settings at the front panel. The pwm output
frequency is
determined by the liquid pwm frequency as defined in the calibration menu.
Slave Power Distribution Unit : The slave power distribution unit will receive
commands from the master, and provide outputs to additional hydraulic pieces.
The
harness connection will determine the module's functionality as either a plow
output
module or scraper output module. Output functionality, where applicable will
perform
according to the hydraulic function chart on the last page. The following
items describe
the input and output requirements for the SPDU.
Hoist Up Output / No Function: Slave module connected to plow harness
provides pwm regulated current source of up to 3 ampere at the hoist up output
pin. The
current value is determined by the dump mode joystick deflection angle or the
dump
hoist valve drive value as defined in the calibration menu. The pwm output
frequency is
fixed at 100Hz. Slave module connected to scraper harness provides no function
for
this output.
Hoist Down Output / No Function: Slave module connected to plow harness
provides pwm regulated current source of up to 3 ampere at the hoist down
output pin.
The current value is determined by the dump mode joystick deflection angle or
the
dump hoist valve drive value as defined in the calibration menu. The pwm
output
frequency is fixed at 100Hz. Slave module connected to scraper harness
provides no
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CA 02618913 2008-01-17
function for this output.
Plow Down Output / Scraper Down Output: Slave module connected to plow
harness provides fixed unregulated voltage source of up to 3 ampere at the
plow down /
scraper down output pin. Slave module connected to scraper harness provides
fixed
unregulated voltage source of up to 3 ampere at the plow down / scraper down
output
pin.
Plow Left Output / Scraper Left Output: Slave module connected to plow
harness provides fixed unregulated voltage source of up to 3 ampere at the
plow down
or scraper down output pin. Slave module connected to scraper harness provides
fixed
unregulated voltage source of up to 3 ampere at the plow down / scraper down
output
pin.
Plow Right Output / Scraper Right Output: Slave module connected to plow
harness provides fixed unregulated voltage source of up to 3 ampere at the
plow down
or scraper down output pin. Slave module connected to scraper harness provides
fixed
unregulated voltage source of up to 3 ampere at the plow down / scraper down
output
pin.
Plow Up Output / Scraper Up Output: Slave module connected to plow harness
provides fixed unregulated voltage source of up to 3 ampere at the plow down
or
scraper down output pin. Slave module connected to scraper harness provides
fixed
unregulated voltage source of up to 3 ampere at the plow down / scraper down
output
pin.
Joystick or keypad pushbutton inputs will be mutually exclusive. If an attempt
is
made to activate more than one pushbutton on the joystick, the relevant
backlight of the
function mode selected will flash red to dark, and an audible beep will sound.
No
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CA 02618913 2008-01-17
associated output will activate. Any involved output that was active will be
turned off. If
an attempt is made to activate more than one input on the keypad, the relevant
keys
selected will flash red to dark, and an audible beep will sound. No associated
output will
activate. Any involved output that was active will be turned off.
The product ratio value menu items will be used to adjust output current to
the
auger when the dispense material is changed. A ratio of 1:1 will apply for the
material
that is dispensed during calibration.
The auto mode takeoff is defined as a timer that controls the duration the
auger
will be set to blast when groundspeed is initially detected. This value is a
calibration
menu item and will range from 0-10 seconds.
Re-programming of the control panel will be accomplished using a harness
connected between a PC and the control panel joystick input. Re-programming of
the
master and slave units will be accomplished using a DB9 to 12 pin Deustch
harness
connected between a PC and one of the 12 pin Deustch connectors at each
module.
The desired method is to update all modules through the control panel joystick
input
using PLC communications.
The pwm frequency of all pulse width modulated outputs will be fixed at 100Hz,
except for the liquid output. The liquid pwm output will be adjustable from
50Hz to
200Hz in 50Hz increments through a menu item.
If the maximum specified current for an output is exceeded, the output will be
turned off along with any associated output, and any relevant backlight at the
display
will flash with audible beep indicating a failure.
In some embodiments of the present invention the vehicle 20 hydraulic system
pertains to:
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CA 02618913 2008-01-17
The functions include: Front Plow 22 - Single or Double acting raise/lower;
Front Plow - Double acting angle; Dump Hoist - Single or Double acting ;
Auger/conveyor - Proportional Flow Control; Spinner - Proportional Flow
Control; Pre-
Wet - Variable Electric Motor; Valve Drive Characteristics; Valves 1-9: 12VDC
@
1800mA/ Switched control; Valves 10&11 : 12VDC @ 2750mA/Proportional control/
100 Hz PWM; (Current compensated outputs are preferred); Motor: 12VDC @
8000mA/Proportional control/50 Hz PWM.
The system 20 functions also include: Proportional Valve/Motor Trims :
Provision for trimming the minimum and maximum drive to the Auger, Spinner and
Pre-
Wet Motor drives; and Groundspeed Control : Provision for operation of the
Auger
valve drive in proportion to the vehicle speed. This is to be an open-loop
servo design.
The endpoints of the operating curve should be defined by the minimum and
maximum
trim settings for the auger drive. The slope of the curve should be controlled
by the
operation of the increase or decrease of the auger input control. The curve
will define
the relationship of A%Valve Drive/AMPH. The net effect of changing the slope
will be to
move the maximum valve trim endpoint from an occurrence at 45 MPH (maximum
speed) to a lower MPH value.
In one embodiment, the system includes valves that operate generally as
follows:
Circuit Design: The design includes load-sense communication from all work
valves.
Construction Style: The valve design are preferably solenoid operated
cartridge
style with a common manifold. The cartridge solenoids are preferably rated
IP69.
Flow Priority: There is preferably a flow priority to insure operation of the
cylinder
functions whenever the spreader is operating and pump flow is critically low.
CA 02618913 2008-01-17
Proportional Cylinder Control: All cylinders have proportional flow control on
the
power sequence to afford cylinder speed control.
Pressure Relief Valves: Independent and stem adjustable pressure protection
are preferably included for the manifold inlet, the spreader, the downside of
all double
acting cylinders and, plow angle cylinders.
Plow Lift Valves: The valves are preferably capable of four-way control and
have
a flow capacity sufficient for the flow rate requirements of the specific
actuator. The
raise side of the circuit are preferably rated for zero leakage.
Plow Angle Valves: The valves are preferably capable of four-way control and
have a flow capacity sufficient for the flow rate requirements of the specific
actuator.
Load-locking check valves or "motor-spool" design are preferably included as
to
support the angling mechanism used.
Dump Hoist Valves: The valves are preferably capable of four-way control and
have a flow capacity sufficient for the flow rate requirements of the specific
actuator.
Counter-balance control valves are preferably included. .
Spreader Valves: The proportional flow control valves for the Auger/Conveyor
and Spinner motors have flow capacities of 15/7 gpm respectively. These valves
are
preferably pressure compensated and parallel in their circuit architecture.
One embodiment of the present invention pertains to an apparatus for
controlling
a snowplow of a vehicle, comprising: a hydraulically actuatable snowplow
mounted to
the vehicle; a hydraulic actuator for moving said snowplow ; means for
providing
controlled hydraulic fluid which receives an actuation signal (such as a
current signal)
and provides hydraulic fluid to said actuator in response thereto; a computer
controller
which receives a command signal and produces said actuation signal in response
41
CA 02618913 2008-01-17
thereto; a joystick movable in a direction over a range of positions and
providing a first
data signal which is proportional to the position of said joystick; and a
keypad having
first and second manual switches, said first switch providing a predetermined
second
data signal when switched, said second switch providing a predetermined third
data
signal when switched; wherein said first data signal, said second data signal,
and said
third data signal correspond to a desired rate of movement of said snowplow,
and one
of said first data signal, said second data signal, or said third data signal
correspond to
said command signal.
Yet another embodiment of the present invention pertains to the apparatus
described herein which further comprises a hydraulically actuatable dump body
mounted to the vehicle and movable over a second range of positions; a second
hydraulic actuator for moving the dump body over the second range at a rate of
movement; the electrohydraulic interface unit receiving a dump signal and
providing
hydraulic fluid to the second actuation in response thereto; and a selection
switch
providing a selection signal to the electrical interface unit, the electrical
interface unit
using the state of the selection switch to determine if the first data signal
corresponds to
movement of the dump body or movement of the snowplow.
Yet another embodiment of the present invention pertains to any of the
apparatus
of methods described herein wherein the electrohydraulic interface unit
includes at least
one proportional solenoid and at least one spool valve, the solenoid applying
a force to
the valve which is proportional to the actuation signal.
Yet another embodiment of the present invention pertains to any of the
apparatus
of methods described herein wherein the vehicle includes a DC electrical
system, the
42
CA 02618913 2008-01-17
actuation signal is at a frequency, and the electrical interface unit places
the actuation
signal on the DC electrical system.
Yet another embodiment of the present invention pertains to any of the
apparatus
of methods described herein which further includes a third switch adjustable
by the
vehicle operator and providing an output variable between high and low limits,
wherein
the output of the third switch establishes the second data signal.
Another embodiment of the present invention pertains to an apparatus for
controlling the snow removal functions of a vehicle, comprising: a vehicle
including a
hydraulically actuatable first tool and a second actuatable tool; an
electrohydraulic
interface unit which receives an actuation signal and provides hydraulic fluid
to said
snowplow or said tool in response thereto; a distributed electronic control
system which
includes a main controller which receives a command signal and transmits a
coded
command signal over a pic network, a remote controls that received the coded
command signal and produces said actuation signal in response thereto, said
main
controller receiving an identification signal and responsive to select one of
said first tool
or said second tool for actuation in response thereto; and a joystick movable
in each of
two directions over a range of positions and providing said command signal
which is
proportional to the position of said joystick, said joystick including a first
switch and a
second switch; wherein the states of said first switch and second switch
provides said
identification signal
Yet another embodiment of the present invention pertains to any of the
apparatus
or methods described herein which further comprises a hydraulically actuatable
dump
body and a third switch, the electrohydraulic interface unit providing
hydraulic fluid to
dump body, the electrical interface unit selecting one of the snowplow, tool,
or dump
43
=, CA 02618913 2008-01-17
body for actuation, and wherein the states of the first switch, second switch,
and third
switch provides the identification signal.
Yet another embodiment of the present invention pertains to any of the
apparatus
or methods described herein wherein the joystick includes a deadman switch
providing
a signal to the electrical interface unit corresponding to the presence of a
user of the
vehicle, the electrical interface unit providing the actuation signal only if
the user is
present.
Yet another embodiment of the present invention pertains to any of the
apparatus
of methods described herein wherein the joystick includes dual redundant
sensors for
providing the command signal.
Yet another embodiment of the present invention pertains to any of the
apparatus
or methods described herein wherein the joystick is centerable in each of the
two
directions and the electrical interface unit is programmable to apply a
deadband region
to each direction.
Another embodiment of the present invention pertains to a method for
controlling
the snowplow of a truck, comprising: providing a truck having an actuatable
snowplow
actuatable in each of two directions at a variable rate of movement and a two
axis
controller, wherein the controller is moveable in each axis over a range of
positions, the
snowplow is actuatable in each direction over a range of rates of movement,
and the
range of positions corresponds to the range of rates; moving the snowplow in
one
direction at a predetermined rate in response to movement of the controller in
one axis
to a predetermined position; and moving the snowplow in the other direction at
a
predetermined rate in response to movement of the controller in the other axis
to a
predetermined position.
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CA 02618913 2008-01-17
Another embodiment of the present invention pertains to a system for
electronically logging the snow and ice removal functions of a vehicle,
comprising: a
vehicle having an electrical power system and including a snowplow
hydraulically
actuatable to a plurality of positions and a system for distributing a
granular product on
a roadway within a range of distribution rates; a first sensor providing a
first signal
corresponding to the position of the snowplow, a second sensor providing a
second
signal corresponding to the distribution rate of the product, a third sensor
providing a
third signal corresponding to the position of the vehicle, and a clock
providing a time
signal; and electronic data capturing and computational module that receives
the first
signal, second signal, third signal, and time signal, the first signal and
second signal
being transmitted from the corresponding said sensor to said module by
communication
over the power system, said module using the second signal, third signal, and
time
signal to compute a product output rate in terms of weight of product
distributed per unit
distance.
Yet another embodiment of the present invention pertains to any of the
apparatus
or methods described herein which further comprises an automatic vehicle
locating
system, wherein the computed data is provided to the AVL system.
While the inventions have been illustrated and described in detail in the
drawings
and foregoing description, the same is to be considered as illustrative and
not restrictive
in character, it being understood that only the preferred embodiment has been
shown
and described and that all changes and modifications that come within the
spirit of the
invention are desired to be protected.
