Note: Descriptions are shown in the official language in which they were submitted.
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9.10.78 1 PHF.77583
"Selection device for adjusting the operation
of a domesti.c appliance, and domestic appliance
- comprising such a device".
1S
The invention relates to a selection device
~or adjusting the opera-tion o~ an electrical domestic
appliance, comprising a first group of contr~l members
for adjusting the quantities which control the operation
o~ the machine, and furthermore comprising a second group
o~ control members for adjusting data concerning the
items t~ be treated.
Devices of this kind are known and are used
notably in electrical washing machines, but also in ovens
j~ ~ comprising elec-tronic con-trols etc. The following des-
cription deals with the use of said selection device in
washing ~lachines, without the invention being restricted
thereto.
A dish-washer as well as a laundry washing
;~ 15 machine may be concerned. Prior to switching on, the
user must consult, for e~arnple, a manual in which the
manufacturer states a list o~ the various washing
situations which may occur. The manufacturer thus
indicates the recommended setting of the control members
for adjusting the washing machine. This is because it i.s
on the one hand necessary to select -the washi.ng -program
to be executed, ~hilst on the other hand gi~en parameters~
tempelatllre of the washing water, the detergents, etc.,
must also De determired. Whell a laundry washing mach:ine
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9.1O.7~ PHF.77583
is concerned,the weight of the laundry to be washed,
the dry-spinnirlg speed, or the omission of dry-spinning
etc. can also be adjusted.
This manual should con-tain a rather extensive
list of fsasible situations such as, when a laundry
washing machine is concerned, approximately eight kinds
of fabric, the soiling o:f wh:ich can 'be expressed in four
different degrees. This amounts -to a total of 32 washing
possibilities for which the manua] mus-t provide infor-
mation as regards the selection.
Because consultation of such a manual is ratherannoying~ the user tends to restrict himself to the use
of only a few combinations from the avalanche of possi-
bilities offered.
; 15 The invention has for it~s object to facilitate
the selection of the setting of the operation of domestic
applicances of this kind and to enable full use of all
properties of such an appliance in a simp]e rnanner.
In order to achieve this object, the device
in accordance with the invention is characteri~ed in that
there are provided means which determine, on the basis of
the setting of the control members of`-the second group,
the preferred or optimum setting of the contro] members
of the first group, there also being provided indicator
means which provide a visible indieation o~ said preferred
or optimum setting. In accordance with a further aspect
of thè invention, said indicator means are provided notably
at the area of the adjustment positions of the control
members of the first group. Using the selection device in
accordance with the invention, it is merely necessary
for the user to adjust the da-ta ccncerning the item to be
treated (the kind of fa'bric and, for example, the degree
o:f soiling in the case of a laundry washing machine~.
The fur-ther adjus-tMent required in order to achieve a
preferred or optimum treatn.ellt, is indicated directly
on the selection device. Using these data, the user can
adjust the fi-rst group of contro] members. ~lowever, if so
desired (and considered to be bet-ter)~ the user may deviate
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9.1O.78 3 PHF.77583
fromthe proposal indicated for one or more adjl~stments.
The desire to be able to act according to own insight
and experience, often expressed and highly ap~reciated,
is thus satisfied.
A further ernbodimen-t of the selection device
in accordance with -the invention is characteri~ed in that
there are provided detection means which provide an alarm
when the setting of one or more control members of the
first group deviates from the preferred or optimum set-ting
indica-ted by the indicator means.
When the indicator means of the described
selection device consist of light sources arranged at
the area of the adjustment positions of the con-trol
members of -the first group, a further embodimcnt of the
selection device is characteri~ed in tha-t indicator means
whereby a p~eferred or optimum setting of a control member
of the first group is indicated provide a firs-t :form of
indication when the setting of the control member corres-
ponds thereto, and a second form of indica-tion i-f` the
set-ting of the control member does not correspond to the
preferred or optimum setting, or notably deviates there-
from in a detrimental manner. In a special embodiment
of the selection device, said indicator means may also
be numerical display means.
The selection device in accordance with the
invention can notably be used in a washing machine in
which the first group of control members includes a
selector for the washing temperature, characteri~ed in
that said temperature selector has associated with it a
number of indicator means wliich corresponds to the number
of temperaturcs which can be selected, activa-tion of one
~ of said indicator means indicating the recommended
:: temperatursD
A special embodiment which concerns a selection
device for a ]aundry washing machine, in which the laundry
is -~laced in a rotating drum which is capabLe of reaching
high rotary speeds during the progran1med dry-spinni.ng
phases and in which a first group of control members
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9.1O 78 ' 4 P~IF.775~3
includes a dry-spinning speed selector~ is characterized
in that said speed selector has associated with it a
number of indicator means which corresponds to the number
of speeds which can be selected, the recommcnded dry-
spinning speed~ or the recommendation to omit spin-drying
being indicated by activation of one of the indicator
means.
These embodiments of the selection device *or
a washing machine enable incorrect operations, which may
be caused by the fact that the user does not know the
correct method of -treating the various commercially avail-
able types of fabric, to be avoided.
Among the factors which are of importance
during washing, the in-troduction of various products
such as detergents, bleach, laundry softeners, must be
determined prior to -the switching on of the machine.
The selection of these products is also dependent ~ the
nature of the items to be washed. A special embodiment
of a selection device for a washing machine in which the
washing programming device con-trols the introduction into
the washing water of the products required for washing and
in which said products are stored in containers which are
filled by the user prior to switching on, is characterized
in that each container has associated with i-t an indicatot
~5 means whereby it can be indicated which container or
containers are to be filled prior to the start of the
washing program.
A selection device for a washing machine in
which a control member which forms part of the first group
enables an economical method of operation to be selected
' by the use of a limited amount of washing water, is
characterized in that'said control member has associated
with it an inclicator whose activation lnforms the user
that it i5 possible to adopt such an economical me-thod.
~`his po3sibility on the one hand relates to the quantity
(weight) of i-tems to be washed, but on the other hand
also' to the quality of the items to be washed; therefore9
the user should not use this possibiIity wlthoutdeliberation.
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9.10.7~ 5 P~I~.77583
Conversely, each method of washing involves
a limitation of the quanti-ty cf iterns to be washed,
for example, laundr~0 This limitation must be observed,
as otherwise washing will not be effective. To this end,
a special embodiment of the selection device is character-
ized in that there are provided indicator means which
indicate the maximum permissible quantit~ of ]aundry for
optimum e~ecution of the washing program.
Finally, if the nature and the degree of soiling
of the items to be washed determine the selection of the
temperature, the detergents, the dry-spinning speed, etc.,
th~ washing program is also dependent thereon. The term
- ~'program" is to be unders-tood -to mean the succession of
; operations which ma~ include (in the case of a laundry
washing machine) prewashing, -the actual washing, one or
more rinsilig opera-tions, and intermediate spin-drying.
Contemporary programming devices for determining the
successi~n of operations are controlled by positioning
to the relevant starting point of a program.
- An embodiment of a selection device in accord-
ance with the invention which comprises such a pro-
gramming device is characterized in that the control
member for adjusting a programming device of a domestic
appliance has associated with it indicator means whioh
indicate the starting point of the preferred or optimum
program.
The appearance of the so-termed micro-
processors has made it possible to construct a selection
device as described in the foregoing, so that there is
provided a programmed digi-tal signal processor which
comprises the said means which determine, on the basis
of the setting of the control members of the second groupS
the prefet~red or optimum setting of the control members
of the first group, said processor furthermore activat:iIlg
said indicator means.
An embodime~lt of -the device in accordance
with the invention wil:L be described in detailhereinafter,
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1~3Z'~25
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9.10.78 6 P~-IF.77583
by way of e~ample, with reference to the accornpanying
diagrammatic drawings.
~ Figure 1 is a partial perspective view of a
laundry washing machine, notably the control panel thereof
which lncludes a selection device in accordance with the
inven-tion.
Figure 2 shows a further embodimen-t o:~ the
control panel of Figure 1, and
; Figure 3 shows a diagram of an embodimen-t of
a selection de~ice in accordance with the in~ention,
comprising a programmable digital signal processor for
activating the indicator means.
i~ The reference numerall0 in Figure 1 denotes
the housing of the laundry washing rnachine. ~t the rear
of the horizontal face constituting the top of this
housing there is provided a control panel on which the
control members of the machine are assembled and in
which, normally the further parts of the selection de~rice
in accordance with the invention are also accommoda-ted.
The embodiment shown concerns a washing machine
in which the laundry is placed in a substantially
cylindrical drum This drum is capable of rotation illa
tub contailling the washing water. The tub and the drum
arenot shown in tlle Figure.
In this embodiment, two groups 12 and 13
of control members are clearly separately arranged on
.
the two faces of the control panel.
The first group 12 of control members directly
concerns the operation of -the machine: it enables ad- -
30 justment of the physical quantities of the operation;
in this embodiment, the desired washing program is
adjus-ted by means of the knob 1L~; the washing temperature
is adjusted by means of the knob 15; the speed of the
drurn containi-ng the laundry during spin-drying is
35 adjusted by means of the knob 16
These contro] knobs are all known ~ se,
-- like their connection to -ihe electrical~ electro-
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1~3~222~
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9.10.78 7 PHI~`.775~3
~ mechanical and electron:Lc devices providing the
movement of the machine which wi]l not be elaburated
herein .
~s a remain.derg it is to be noted, by way of
example, that -the electromechanical programming device
is capable of successively controlling elec-trical valves
for the water in the tub, control circui-ts for filling,
heating elements, and the con-trol circuits of the
temperature, the drive motor of the drum, and the
elec-trical power supply thereof which dctermincs the
directi.on and the speed of rotation, a discharge pump etc.
In the embodim~nt shown, the knob 14 is capable
of occupying eight starting positions of the programming
device, said positions being denoted by the references
1 to 8. These starting positions enable selection of the
operation c~cles; the most complex cycle comprises
- prewashing,actual washing, several rinsing operati.ons,
and spin-drying of the laundry, whilst the simplest cycle
. ~ concerns only a rins:ing operation and a spin-drying
20- operation. The use which can be made of th.ese programs
isillustrated in the following table I.
. The knob 15 on -the machine shown in Figure 1
. enables a washing temperature to be chosen from. five
.~ feasible temperatures: 90C9 60C, l~oc, 30 C and the
temperature of the water as it comes out of the tap,
: i.e. as it flows into the.tub of the machine. In the
latter case the hsating device of the washing rnachine,
comprising the customary heating elements, temperature
sensors and a control circuit for said temperature,
remains inactive. The i.ndications for these different
washing temperatures are shown in Figure 1.
The machin.e shown in Figure 1 a~so comprises
a knob 16 for selection of the ro-tary speed of the d:rum
during spin-dryin.g, for examp]e, by cha.nging, at the
instant of spin dry:Lng, the characteristics of the
electrical power supply for the motor which drives the
; .:......... drum. The knob 16 can occupy six posi.tions which
: correspond to five spin-drying speeds of 120, 200, 350,
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9.10.78- ~ P~IF.77583
500 and 700 revoluti.ons per minute, and one position for
standstill of the machine while the tub is still filled
with rinsing water. ln the embodiment shown, the speed
can furthermore be continuousLYcon-trolled between the
extreme values of 120 and 700 revolutions per minute.
The selection of the spin-drying speed in dependencc of
the kind of fabric to be washed is illustratod in table I.
ln this embodimen-t, -the second group 13 of
control members enabl.es the user of the washing machi~e
to indicate:
- the nature of the fabric to be washed,
using a pushbutton 20 or any other suitable electrical
control
- the degree of soiling of the laundry, using
the pushbutton 21.
- In the embodiment shown9 0igh-t kinds of fabric
can be treated:
A : whi.te laundry (cotton, li.nen)
B : whi-te laundry which has been treated so that
no ironing is required after washing and
drying
C : coloured laundry (co-t-ton, linen)
D : colour fine laundry
E : synthetic fabrics which may be washed at 60
F : synthetic fabrics which may be washed only
at 40C
..
- G : fine fabrics (silk)
H : wool.
The machine shown enables four different
3U degrees of soiling to be indicated by means of the
following symbols:
: very soiled :Laundry
: soiled laundry
~ : medium soiled laundry
o : clean laundry
Therefore~ in this embodiment there are
-- 8 x 4 _ 32 washing si.tuations which can be indicated
by the user on the con-tro:l. members of the group 13.
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9.10.7~ 9 PHF.77~83
AD equal number of op-timum combinations of the physical
quantities determining the operation of the machine
correspond to these 32 situa-tions. These combinations
are usually described.in a n1anual drafted 'by the manu-
facturer of the machine. Because it has been found that
repeated use of this manual is annoying and causes errors
i.n the programming, the invent.ion has for i-ts objec-t to
replace this manual by means which electricallyor
electronically convert the indica-tions concerni.ng the
state of the laundry to be washed into a set of i.ndic-
ations for the position of the control knobs 1Ir, 15
To this end, there are provided sets of
indicators which are in this case constructed, I`or
example, a.s light sources and which are denoted by the
: 15 , reference numerals 24, 25, 26; the indicators are arranged
in the vicinity of the cont:rol knobs 14, 15, 1~ on the
: part of the con-trol panel 11 which accommodates the group
12 of control members. Each of these sets of indicators
24, 25, 26 comprises a number of indica-tors which corres-
~ ponds to the number of pOSitiOlls of the knob.
~or example, there are provided eight i.ndica-tors
. 24 which correspond to eight program star-ting points
' which can be activated by the knob 1l~.
There are five indicators 25 which correspond
~¦ 25 -to five washing temperatures which can be selected by
.-. the knob 15. There are si~ indicators 26 which correspond
' ' to six spin-drying and non-spindrying possibilities which
. can be ac-tivated by means of -the knob 16.
On the control panel 11 there are also provided
two sets of indicators 27, 28 which are sub-divided
as ~o:Llows. Th.e four indica-tors 27 serve to indicate
which de-tergents are to be introduced into the machi.lle.
Thi.s is because, depending on the programs, fOU1'
detergents can be used:'a soap or a detergent for the
prewash (I), a soap or a detergen-t for washing (II),
a product (~) con-tain.ing bleach for bleaching, and a
laundrv softener (~) which is added to the last rinsing
water and w]~.ich results in a somewhat so~ter laundry.
.
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9.10078 '10 PIIF.77583
Generally~ prior to switchlng on these detergents are
placed in the containers ~Thich are f:lushed during the
r'epeated ~illing of the tub in the course of the program.
In this embodiment there are provided three
indi.cators 28. These indicators ser~e .to indicate the
- ma~imum quantity of` laun.dry which can be ef`~ectively
washed, taking into account the washing conditions chosen9
in the embodiment shown in Figure 1, thi.s amount may be
5 kg at the most ~'the maximum capacity of` the machine),
or be limited to 2 kg or 'I kg~ depending on the f`abrics
as stated in the below table I.
. The indicators 24 to 2S may consist of electro-
"~ luminescent;diodes or any othex :Light source. The indi.cators
may bo arranged opposite the i.nscription'provided on the
control panel 11 or underneath these inscriptions, whenprov.ided on:transpareIlcies. It is simpler, like in
Figure 2, to arrange the indicators f`orm:ing the sets 2~,
25 ~nd 26 around the pushbuttons 14, 15, 16 ~each one to
the right of one of' the posi-tions of the correspon~ing
~nobs). The indica-tors 24 to 28 may a]so be digital
displaysO
The indicators 24, 2S, 26, 27, 2~ are control.led
on the basis'of the setting of the control members 20 and
21 o~ the group 13. Thi.s i5 reallzed by given means,
notably electronic means in the f'orm of a programmable
digital signal processor (in this case a microprocessor~
- an embodiment of which will be descri~ed hereinaf`ter ~Jith
ref`erence to Figure 30
The below table is an example o~ a manual
of a washing machine as sho~n in Figure 1. Each li.ne oP
the -table I refers to a kind of fabric-and the degree of`
soiling thereof`; these character:istics r~.n be introd-uced
by the user by means o~ l,he pushbuttons 20 and 21,
As from the third col.umn, each of the columns of the table
I relates to one of the quantities to be sel.acted by the
user duri.ng t;he putting into opera-t:ioll of -the machine~
: These columns state the recommended ~settings whj.ch can
be indicated by the indicators 24 to 2~ o-~ the sel.ection
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9.10.78 11 . PIIF.r(7583
device in accorclance w:ith the invention. The statement
in table I correspon.d to those whi.ch are given in
Figure 1 and which will. be explained in. the following
description. In the column corresponding.to the indi-
cators 25, the symbo'l "-" indicates that it is advisable
to emit heating of the washing water. In the columns
corresponding to the indicators 27 and 28, the vari.ous
symbols "x" indicate the recommended setting. If stand-
still of the machine in the posi-tion "-tub full" is .
possible, it may be that a corresponding indicator of the
indicators 26 is found,l;o be lit at the i.nstant at which
an indicator indicates a recommended dry spinning speed;
~ only the latter is stated in the table I.
15
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.
. 25
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, ~TABL~ I-
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9.10.78 12 PHF.77583
TABLE I
_ ____ _ ~
r i.ndicators indioatoIs indicators indicators indicators
.24 25 26 27 2~
. ~t ~ __ ~ __________ _
t~ programm tempera- d.ry- detergents weight t
h ~ number -ture C spinning in kg
5 ~ ~t . speed I II C1 ~ 5 2 1
_ _ _ _ _~ _ _ _
A ~- 1 9 700' X X X ~. X
A ........ 2 90 . 700 X X X X .
A . 1 60 700 X X X X X
: A o 4 _ 700 X X
B ........ 1 9 35 x x x x . x
B ........ 2 . 90 35 . x x x x
., B . - , 1 60 35 x x x x x
. B 0 4 _ 35 x x
15 C ....... 1 60 700 X X . X X
C ........ 1 60 700 x x . x x
C . 2 60 700 x x x
C ~ li 700 x x
D ......... 1 40 700 x x x x
20 D ........ 1 40 700 X X X X
D . 2 4 70t~ X X X
D ~ 4 _ 700 . x x
L ......... 1 60 35 ~ x x x x
2 L ......... 2 60 35 . x x x
5 L . 3 60 35 x x x
. L ~ 4 . . _ 35 x x .
F ........ ~t 4 200 x x x x
F ........ 5 . 40 200 x x x x
F . 6 40 200 x x x
30 F ~ 8 _ 200 x x
G ........ 6 . 30 120 x x x
G ........ 6 30 120 x x x
G . 6 30 120 x x x
G ~ 8 _ 120 x x
35 H .,. rf 3 500 x x x
H ........ ~ 30~ 500 x x x
. : ~ 7 _ 500 x x x
. _H Et _ _ 8_ _ _ _ 500 _ _ .._ x
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9.10.78 13 PHF.77583
In order to make visible the indications
realized on thc pushbuttons 20 and 21, these buttons
. may be connected to two sets o~ indicators 30 and 31,
respectively, in ~igure 1 which remain switched on duriIlg
the opcration o~ the machine. The user can thus per-
manently read what he has originally indica-ted: nature
of the ~abric and the degree o~ soi~ g.
The device in accordance with the invention
operates as ~ollows: during the putting into operation
o~` the washing machine, the user :~irst indicates the
nature o~ the laundry to be washed (white laundry~
synthetic fabric...) and the degree of s~ling o~ the
laundry by means of the pushbuttons 20 and 21.
The indicators 2L~ to 2~ then indicate the recommended
setti.ngs of the machi1le: programm number, temperatureS
dry-spinning speed, weight o~ the laundry which can be
washed, and detergen-ts to be introduced into -the machine.
The user may adhere to these indicati.ons 7 notably by
operating the buttons 14, 15, 16; alternatively~ the user
may de~iate ~rom.-these indications if a given settil~.g
seems to be more suitable in gi~en situations. In the -
~ ~ latter case the indicator whose recommendation i5 not
; ~ . followed reacts in a characteristic manner, for example,
by ~lashing if a light source is concerned. This step;
still leaving the user a free choice, enables errors tobe pre~ented. The alarm thus reali~ed can operate notably
; . only in the case of settings which are liable to dama.ge
: the laundry, for example, when the temperature indicated
on the knob 15 is higher than the recommended temperature
30 illdicated by the indicators 25, or when the dry-spinning
speed indicated by the knob 16 is higher -than the re
commended speed indicated by the indicators 25.
Figure 3 shows the diagram o~ an e~nbodime~,.-(
o~ the selection device ~or control of the indi.cato~s 24
35 to 2~ by the second group o~ control !nember.s 20-21.
For the sake o~ simplic:i.ty, the data introducea
-- into the circ~iit by means o:~ the pushbutl.cns 'V and 21 ,
are limited to the nature o~ the laundry an~ the deg:ree
,
~ I
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9.10.72~ PHF.77583
of soil ing thereof', an additional choice whic'h could
be given by means of the second group of kno1>s 13
(stopping of the machine :I'or dry spinning, economical
washing, long washing...) 'being excluded in thi.s e~ample.
The circuit utili:zes a comrnercially available
microprocessor 40 of the type SIGNETICS 2650.
For this applicati.on, for whi'ch the capacity
of the microprocessor is more than adequate, the pins
numbered "15", "25" and ~36" are short-circuited by the
lO manufacturer (rele~ant signals indicated by ADREN, BRUSEN,
OPACK) and connec-ted to circui.t earth. Moreov~3r, the pins
numbered ~17", "37", "39!' (relevant ~ignals indicated by
;~ INTREQ, YAUSE, VCC) are short-circui-ted by the rnarlu:E`acturer
- and connected to the electrical power supply VCC of the
!5 circuit (-~5 volts in thi.s embodimen-t). A device which is
not shown iJi the Figure periodically supplies the input CL
(pin "36" of the 2650) of the microprocessor 40 with
signals w~.ich serve as a basis for the synch:ronization
of the data input and output operations and the arithme-tic
~ operations in the mi~roprocessor. A device which is no-t
shown in ~he Figwre detects the a~pi'.i cation of voltage
to the circuit and ensures, via the input RST (pin "16"
of -the 2650) of the microprocessor, that the latter is set
back to a predetermined program starting address.
The microprocessor used comprises eight bi-
direction~l data channels which are mlmbered DBO, DB1.~.
DB7 (pins "33", "32", "31", ... ~'26" of the !nicroprocessor
2650) for the ~ bits whereby the data are transferred
between the microprocessor, the memories and the registers
30 or data output/input gate3 surroundlng these rigisters.
In Figure 3,-the eig~ht~channel system (referred to as
~bus'l) is represented by a double arrow ~i where connectic~;
arrive from or depart to peripheral equipment. In the
diagram o:L' Figur~ 3, a group of connections which connect
35 two n.embers are indicated by the :indicati on ~,
- being tlle number of connections.
--- ' The data relatlng -to the natu e of the laundry
and the degree of soil:ing thereof are input by the use:r of
, .
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~L13;2Z;25
... . ...
9.10.78 1~ Pll~ 7r~3
tl~e machine by means of the pushbuttons 20 and 21
These data are subsequen-tly input by increments on the
input of a gate 42 of the buffer type ~rh~ch consists o~,
for example, a circui t which is commercially ava:ilable
5 as a SIGNETICS 8T97. The input ~3 receives the signals
which indicate the kind of fabric to be washed (butto-ns 20
in Figure 1) and the input S~ receives the signals which
indicate the degree of soiling of the laundry (bul;l;ons 21
of Figure 1). These data are input in -the dat~ channel 41.
10 The micro-processor l~o comprlses 13 ,pins ADO to l~D12
on which non-significant address bits are available.
The pins ADO to AD8 (numbered "6", "7" to " 1~1" in the
processor 2650) are connected to read only memories and
random access memories, the pins l~D11 and AD12, being
common to the pin R/1i (numbered "2", "3" and "23~' in the
processor 2650, respectively) being connected -to the
decoding device 43 which consists fa for examp:Le, a
circuit of the type SIGNETICS 74 LS138. The decoding
device L~3 is activated by the simultaneous presence of
20 signals on the outputs OPREQ and WRP of the microprocessor
(pins nwnbered "24" and "22", respectively, in the pro-
cessor 2650), i.e. when the microprocessor has completed
an operation and the calculated data are availab:Le~
To this end, the signals OPRLQ and WRP are applied to the
25 short-circui'ced terminals G2a and G2b of the decoding
device 43. The ou-tput Y4 of the decoding device 74LS138
i is coImected to the -terminal R1(~ of the gate 42 for
control thereoE. In this embodiments, the program
;; instruc tions and the decoding tables required for the
; 30 calculations in the microprocessor are stored ln a
permanent and non-destruc-tive mamler in two read-only
memoriex which can be programmed by the user (PROM 1 and
PROM 2 in Figure 3); these memories may be of the type
SIGNETICS 82S115 with a capacity of 512 words of eight
35 bits each. From the decoding device 43 these memories
receive the signal CSl which becornes available on the
--- output Yo of the decodin~ device ~7L~LS138. The read-only
memories ~'ROM 1 and 2 commuIlica-te wi-th the microprocessor
.,
.
- ~ -
f,~>r,~
9.10.78 16 PHF.775S3
40 via the data channels DBO to DB7 in reac-tion to an
address which is available on the terminals ADO to AI)8
of the microprocessor. The signal on the -terminal AD9
(numbered "5" in th.e cicuit 2650) provides the choice
5 of the read-only memory to be read: the signa:l. CS22 act,s
on the PROM 2 because it i s associated with AD9. CS21 is
the complement thereof and acts o:o PROM 1. The presence of
the signal CS1 activates -the relevant selectcd memor-y,
The microprocessor is furthermore connneoted
10 to two random access memories RAM 1 and. RAM 2, the
posi-tions of which are accessible via the addresses
indicated on the ou-tpu-ts ADO to AD7 of the microprocessor.
The s-torage and reading of data into and from .the memories
RAM 1 and RAM 2 is realized via the data channels :DBO
to DB3 for RAM 1 and DB4 to DB'7 for RAM2. These randonm
access memories may be of the type SIGNETIC 2111 and
contains 256 words of 4 bitst The signal CE2 = AD10 of
CE'I _ AD11, origina-ting from the micr~processor, contro].s
the memories which also receive the signal~; OD and WE
20 which become available on the outpu-ts Y2 and Y3 of the
decoding device 43.
The calculation results which become avai.:Lable
on the data channels DBO to DB6 are introduced into the
:: shift registers R1 to R7 which consis-t, for example, of
25 circuits of the type SIGNETlCS 7!~LS'l64, having a capaci ty
of 8 bits and comprising parallel OUtplltS and inputs
in series. The registers R1 to R7 receive the activation
signal CPP~ which becomes available on the terminal Y5
of the decoding device 43. Each of the eight outputs of
30 each sh.ift reg:ister R1 to R6 is connected to a bu:tfe-r
element inverter of a group of inverters 101 to 1~18,
said group consisting of, for example,, an inverter of the
type SIGNETICS I~ F~o6~UB. 13ach of the 48 inver-ters power~:
an electro].uminescen-t diode (LED), each of ~.hich con-
stitutes one of the indicators 21~ to 28 (Figure 1) and
~ .
. is associated notably wi th the control l~nobs 14, 15, 16
of the washing machine~ The indicators indicate the
result of the oalculati.ons performed. by the circui.t and
:: ` ' ' ' '
. ' '
.~ ,. . ....................................... . .
,
~L~L3Z2ZS
.. . . .. . .
9.10.78 17 PHF~77583
indicate -the recommended set-ting of` the washing machine.
The exact number, limited to 48 in this embodiment, is
dependelit of the precision of the indication to be given:
program, temperature, speed, weight of the laundry,
detergents (see Table I). The register R7 supplies
electrical voltages, via the inverters 1L~9 to 154 in two
analog-to-digital converters ~4 and 45 which consist
- of resistors whose outputs ~6 and 47 carry electrical
voltages, which are proportional to the washing tempera-ture
(converter ~) and the dry-spinning speed (converter ~5)
as calcu:lated by the device. In the comparators 48 and 1~97
-the voltag~ 1~6 and 4r~ are compared with the voltages
obtained on the wiper o~ the two potentiometer amplifiers
215 and 216 whlch are connected to the knobs in I~'igure 1
-which control -the washing temperature (knob 15) and the
dry-spinningr speed (knob 16)~ respectively. The compalison
signals S1 and S2 are again introduced into the arithme-tic
device via the gate ~2. When the user adjusts the knobs
15 and/or 16 to a value which :is higrher than the re-
commended value (temperature or speed), the arithn~etic
device can indicate the risk of damaging of the laundr~
by switchlng on, via the inputs S1 and S2~ a special
indicator or by causing an indicator to give a strikingly
different indication, for example, simply by flashing.
' '' ' ':
~ , .
. . ' .
,
~5
'
..... .
~ - .. . I
... ,.,., ............... I
.~ ~, , , ~, i
