JPS6032477B2 - electronically controlled washing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a washing machine of a completely new construction, namely an electronically controlled washing machine.

Additionally, in fully automatic washing machines that select from a large number of programs, a method is adopted in which a number of switches corresponding to the number of programs are provided and a desired program is selected by operating the switches.

In addition, program control includes a program selection switch, a cam body that controls a series of programs such as washing, draining, rinsing, and spin-drying, and a means for driving this cam body, or a means for driving the cam body to quickly start the cam body according to the settings. This is done by a device driven by. In the above method, even if the program selection switch is operated, it is difficult to set the cam mechanism to a predetermined position instantly, so it takes time until the operation actually starts. Furthermore, the lifespan of the mechanism that drives the cam body is short, and the more programs or combinations of programs, the more complex the mechanism becomes and the more difficult it becomes to design. It becomes a problem. SUMMARY OF THE INVENTION Therefore, it is an object of the present invention to provide a device which can store washing programs in high density without using a mechanically moving storage device and which can control washing operations based on the washing programs.

Briefly describing the preferred embodiment for achieving the above objects of the invention, the washing program is stored in digital form in a solid state storage device or ROM (Read Only Memory) in the form of a so-called "chip". This information is read by sequentially addressing the ROM based on the output of a counter that counts clock pulses produced in the washing machine. Above R
The output of the OM is used to control the electrical loads of the washing machine, such as drives such as motors, valves, lamps, etc. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a plan view of the operating section 1 of the washing machine of the present invention, and FIG. 2 is a block diagram of the main parts of the washing machine of the present invention.

In order to simplify the explanation, the steps of water supply, prewashing, and drainage are omitted here. In Fig. 1, KI to K9 are lock-type washing condition input key switches, KI to K3 are dirt indicator switches K4 to K6 that respectively indicate the degree of dirt on the item to be washed: ``heavy'', ``normal'', and ``slight''. K7 to K9 indicate the type of laundry to be 'thick', '1-normal' and 'thin' respectively. This is a type indicating switch.

The keyswitches in each group of the dirt quantity and type can be set independently, so when inputting conditions, a total of three keyswitches are set at the same time, one for each group. If the key switch is pressed and set, other set key switches will be reset.
0 and Kfu1 are normal key switches, and KKame is a start key for instructing the washing machine to start operating, and KKAME1 is a key for instructing a temporary stop of the washing machine's operation. Further, SW is a power switch. The presses of the key switches KI0 and K are stored in built-in flip-flops, so they are not locked. 2 is a switch for selecting which washing operation to perform among washing, rinsing, spin-drying, etc., and a movable knob 3 and a washing course contact point...
It consists of...

The operation section corresponding to the above contact has the words 'Full Course' written on it.
'Rinse and dehydrate'... . . . The instructions for each contact point are entered. 5 is a process chart that diagrams the washing process. ``The columns are arranged in a matrix with 8 columns in the vertical direction and 4 columns in the horizontal direction.

In the top column of the above process chart 5, the washing operation characters "wash", "rinse", "rinse 2", and "spin" are written in the horizontal direction.
In addition, in the column corresponding to each contact point, a blue line is drawn only for the part of the washing operation to be executed at that contact point. Therefore, if you look at the process chart 5 above, it is very easy to understand the washing operation of each washing course. Lamps LI to L4 indicate the progress of the washing operation, and only the lamps corresponding to the washing operation in progress are lit.

L5 is a lamp that lights up during drainage. 6 is a part that indicates the amount of detergent according to the washing conditions of the item to be washed, and indicates the amount of detergent when the standard amount of detergent is '1'. Instruct.

That is, one of the lamps L6 to L8 is turned on in accordance with the washing conditions entered using the keys KI to K9 to instruct the amount of detergent. Each means on the operating section 1 is used in the following manner in the case of a washing instruction.

First, the user turns on the power switch SW and instructs the washing conditions of the item to be washed using the keys KI to K9.

Next, the knob 3 of the washing course selection switch 2 is switched to the desired course. After selecting a course, the detergent amount indication lamps L6 to L8 are turned on and the instructed amount of detergent is added.
If the start key KIO is pressed here, the selected washing operation will start and a lamp such as L will display the operation being executed.
I lights up. If you wish to stop the washing operation for some reason while it is in progress, press the temporary stop key KII to stop the washing operation. If you want to restart the operation, just press the start key K wing turtle again. This type of operation section allows washing conditions to be entered using multiple key switches, making input operations very easy.Also, the selection of washing courses is done using selector switch 2, so you can easily see what the selected washing course was. It is obvious from the position of Gamami 3, which is very convenient.

In other words, once the washing conditions are input, there is no need to check them again during the washing operation, so it is easier to see what has been instructed, and it is easier to use.The selection of the washing course is made easier as the washing operation progresses. Since it is necessary to check the instructions many times even if the instructions are in between, we make it easy to see what the instructions are.

In this way, the washing condition input means and the washing course selection means are separated into separate switches, and by combining these switches, the most convenient operating section for the washing machine is provided. Since the provision of a large number of switches is related to the adoption of read-only memory ROM as described below, the internal structure of the washing machine of the present invention will be explained below.Figure 2 shows the main points of the washing machine of the present invention. 1, the same parts as in FIG. 1 are given the same reference numerals.The washing machine of the present invention, as shown in FIG. , a course selection input section lm for instructing the selection of a washing course, a ROM in which washing programs corresponding to the inputs RI to R27 from the input section ln are stored in advance in digital code format, and a clock pulse CP at a predetermined pulse interval. The above ROM is based on the time counter Cu that counts sequentially.
an address selection section S which sequentially selects the addresses of;
a converter HN that converts the program derived from the ROM into predetermined control signals 11-m; and a driver that drives a load such as a motor, a valve, etc. using the signals 11-m from this HN to perform a predetermined washing operation. It can be divided into seven parts.

In the washing condition input section ln, KI to K9 are the aforementioned key switches for inputting the washing conditions of the items to be washed, and one key switch is set corresponding to the dirt, amount, and type. .

The outputs of the three key switches set at the same time are first converted by the encoder EC2 into a standard instruction output for the amount of detergent, and any one of the corresponding lamps L6 to L8 is turned on. For example, when keyswitches K1, K4, and K7 are set, lamp L6 lights up. The decoder DCI converts a combination of three key switch outputs set at the same time (that is, 3×3×3=27 combinations) into any one of 27 page selection outputs RI to R27. This output RI~R27 is the page PI~P of the above ROM.
Select one of 27. KI0 and KII are the start key switch and pause key switch mentioned above, and the RS type flip-flop F is activated by operating the above key KIO.
is set, and the flip-flop F is reset by operating key KII.

The output of this flip-flop F is gate AGI, which will be described later.
control on and off. Next, the input section lm is a part corresponding to the cut-off switch 2 of the operation section 1, and this switch 2
Each output is converted into washing operation instruction outputs AI to A4 to be executed by the decoder DC2.

In other words, when full course is selected, output '1' is generated at each instruction terminal AI to A4 for 'Wash', 'Rinse [1'', 'Rinse {2}', and 'Dehydration', and only 'Dehydration' is selected. In this case, an output '1' is generated only at terminal A4. These outputs are input to match detection gates AG2 to AG5, which will be described later. Now, the difference between the washing machine of the present invention and the conventional washing machine is that the washing program is stored in the ROM, and this point will be explained in detail.

In Figure 2, the ROMs are 'Wash', 'Rinse (1)', 'Rinse ■', and 'Dehydration' which are most suitable for the washing conditions of the item to be washed.
This is a read-only memory that stores each operating time as a digital program.

This ROM consists of 27 pages with at least 64 steps as addresses, and the program for each step is 4.
It is stored as bit coded information. The operation time of the washing operation most suitable for each washing condition is programmed on each page above, and the key switch KI~K
By inputting the washing conditions at step 9, only the pages PI to P27 corresponding to these conditions are selected. The ROM is sequentially designated with addresses by address selection signals SI to S64 from the address selection section AS, and the program content of the designated address is derived by the conversion section HN'.

Therefore, for example, when the key switches K1, K4, and K7 are set and the page selection signal RI is generated from the decoder DCI, only the PI page is selected and the contents of the addresses ADI to AD64 of the page PI are sequentially converted to the converter HN by the signals SI to S64. ' This will be derived.

The address selection signals SI to S64 are generated sequentially, for example, every 3 steps, so all addresses AD of the selected page
Usually 0.5 minutes x 6 to derive I~AD64
4 = 32 minutes, which is slightly longer than the time required to perform all full-course washing operations. Next, the program contents of the above ROM and its storage format are stored in the third
This will be explained with reference to the figures.

The program in this embodiment has a 4-bit digital code as one unit, and each digital code is made to correspond to the washing operation of the washing machine as described below.

0001......Start 0010...Water supply 0011...Wash 0100...Drain 0101...Rinse (1) 0110...... ...Rinse■ 0111...Dehydration 1000...Pause 1001...End of operation 1010...Fast forward here What should be noted is the storage format of the washing program.

That is, in this embodiment, the ROM does not store any time information such as 2 minutes or 5 minutes for each washing operation such as 'wash', 'rinse {1)', etc.

In other words, only the digital code for the entrusted washing operation is stored in the ROM, as shown in FIG. 3, for example. Figure 3 shows 'washing' for 10 minutes, 'rinsing' for 1} and {2 for 2 minutes.
This is the program content when 'dehydration' is 5 minutes.

In this case, the operation time of each washing operation is the product of the number of addresses in which a common digital code is stored and the selection interval of each address (the generation interval of address selection signals SI to S65). ADI to AD20
Since the previous 20 steps have been memorized, the operating time will be 04 minutes x 20 = 10 minutes. This type of program storage format requires a much smaller configuration of the part that performs digital processing than a format that simultaneously stores not only the digital code for the washing operation but also the program code that instructs the operation time and other complicated operations. It has the advantage of being simple.

Next, the address selection section AS will be explained. fB is a signal generation circuit that generates a clock signal CP with a pulse interval of 30 seconds based on the signal of the AC power source AC (eg, frequency 60). TM is a time measuring section consisting of a 6-bit capacity 2n-ary counter (in this case, a 64-ary counter) Cu, a gate AGI, and the like. The counter Cu is composed of six static flip-flops, and counts up every time the clock pulse CP is introduced via the gate AGI. The gate AGI is an AND gate that is turned on only when the aforementioned flip-flop F is set and turned off when it is reset. As mentioned above, the clock pulse CP and the mismatch signal CJ, which will be described later, are supplied to the gate AGi. The counter Cu is reset to the initial state by the reset signal Reset when the power is turned on and the IJ set signal Reset when the operation ends. AD is an address decoder that converts each bit output of the counter Cu into at least 64 address selection signals SI to S64. In this example, the counter Cu
When the counter Cu is loo0001', the SI output is generated, and when the counter Cu is '000010', the S2 output is generated, so that the address instruction is advanced by one step each time the counter Cu increments. Note that the output of the flip-flop F is introduced into the address decoder AD as a condition. Next, the signal conversion unit HN includes an instruction decoder lnDC that converts the 4-bit program content derived from the ROM into predetermined control signals 11 to 11, and instruction outputs AI to A4 from the washing course input unit lm. It is composed of AND gates AG2 to AG5 and a NAND gate OGI, which perform coincidence detection.

The control signal ears 6 to IN control the drive circuit DV of each load of the washing machine, such as motors, speakers, valves, lamps LI to L4, etc., to cause each load to perform a predetermined washing operation.

11 to 14 are the codes read from the ROM that are 'washed'.
~'Rinse {1r'', 'Rinse {2}', '4 Dehydration' are signals that become '1', respectively.

AND gates AG2 to AG6 detect the coincidence of both outputs AI to A4 and 11 to 4, respectively, and furthermore, the output of each gate is introduced to NO gate OGI, so
If no match is detected in any of the AND gates AG2 to AG5, the output CJ of the NOR gate OGI becomes '1'.

In other words, even if the program output of the ROM instructs ``d wash'', the output of decoder DC2 is
When the washing course and the program do not match, as in the case where A2-A4=0 and A2-A4=1, a mismatch output CJ=1 is generated from the NOR gate OGI. In this case, in order to quickly advance the program, the above output CJ is supplied to the counter Cu', thereby causing the counter Cu to advance rapidly. In the embodiment, the signal CJ is directly supplied to the counter Cu, but the frequency of the clock pulse CP is temporarily changed to a high speed, for example 50K, by the signal CJ.
It is also possible to fast-forward the t counter Cu by changing it to C. Next, we will explain the operation of the washing machine of the present invention, but for the sake of explanation, we will assume that the washing condition is that the laundry is heavily soiled, has a large amount of laundry, and is thick, and the washing cycle is set to ``Rinse''(2)''. It shall be.

Further, explanations of operations such as water supply and drainage will be omitted, but if these operations are to be added, the output of the water level detection means may be input as a condition to, for example, the address decoder AD. First, when the power switch SW is operated and the power is turned on, a set signal Reset is generated (not shown) to set each part of the washing machine to its initial state using the transient phenomenon at the time of power-on.

The signal Reset resets the time counter Cu and also resets the flip-flop F. At the same time as the power is turned on, the signal generation circuit fB operates and the clock pulse CP
is generated. However, since the flip-flop F is in the reset state and the AND gate AGI is turned off, the clock pulse CP is not introduced to the counter Cul, and the counter Cu maintains '000000', causing each load of the washing machine to be in an inactive state. Keep it. Here, the washing conditions of the item to be washed (heavily soiled, large quantity, and thick) are input using key switches K1, K4, and K7. This input is encoded by the encoder EC2 and lights up the lamp L6, so the user instructs the user to pour the standard amount of detergent into the lead tank, and then press the selector switch 2 to select 'Rinse ■'.
Set the items. As a result of this selection, the outputs from the decoder DC2 become AI=1, A2=1, and A4=1. When start key KIO is pressed in this state, flip-flop F is set, and as a result, gate AGI is turned on, so that clock signal CP is guided to counter Cu.

When the counter Cu counts up and reads '000001', the first address selection signal SI is first generated from the address decoder AD. On the other hand, the key switch K1,K
4. Since the output of K7 is converted into a page PI selection signal RI by the decoder DCI and specifies the page PI of the snake OM, the program of the first address ADI of the page PI shown in FIG. 3 is sent from the ROM. Content '0010' is derived.

This program content '0010' is converted into a 'wash' control signal and a 'wash' instruction signal 11 by the instruction decoder lnDc. The above 'wash' control signal is
It is supplied to a drive circuit DV such as a motor lamp LI, and drives the corresponding load to execute a 'washing' operation. The instruction signal 11 is supplied to the AND gate AG2 and decoder DC
A match with the 'wash' signal AI from 2 can be seen. LI=
1. Since AI: 1, AG2 = 1 and Noah Gate O
No discrepancy signal CJ=1 is generated from GI. Therefore, the counter Cu remains in the state of ``00001'' until the next clock pulse CP is introduced, so that the ``washing'' operation is executed for at least three millimeters. When the next clock pulse CP is introduced after three cycles, the counter Cu counts up to '000010', the address decoder AD generates the second address selection signal S2, and the ROM
address AD2.

Since the ``wash'' program ``0010'' is stored in AD2 of the PI page as shown in FIG. 3, this content is led to the instruction decoder tray c and performs exactly the same operation as at address ADI. This behavior is '0
Since the address 010' is repeated while executing the stored address, the 'wash' operation is executed for each interval up to address 20. However, when the counter Cu counts 21 clock pulses CP, the state becomes '010101' and the address AD21 is specified, program content 10101 for 'rinsing {1}' is derived to the decoder lmDc. .

The above '0101' is converted to the 'rinse river' operation control signal, so the drive circuit DV is shifted from the 'wash' operation to the 'rinse' operation, and the 'rinse instruction signal 1' is transferred.
2=1, 'wash' instruction signal 11=0. Therefore, this time, 12=1 and A2=1, and a match signal is generated from AND gate AG3, so that no match signal CJ is generated. Therefore, the addresses advance in steps of 2, and the address AD21 where the program code '0101' is stored.
~During the 2 minutes when AD24 is running, 'Rinse {1
}' is executed. When the address AD25 is designated, the program content '0110' is derived, the 'rinsing ■' operation is instructed, and the process moves to the 'rinsing {21' operation]. at the same time'
Rinse■'Operation instruction signal 13=1 is generated, 11=0,
12 = 0, 14 = 0, but since the 'rinse ■' signal A3 is not generated from the decoder DC2, no match signal is generated from AG4, and all outputs of AG2 to AG5 become '0' and from the NOR gate OGI. A mismatch signal CJ is generated.
(The generation of this signal CJ means that 'rinsing [2]' is not occurring during the washing cycle.) Since the above signal CJ is given to the counter CJ via the gate AGI, the rinsing process Cu immediately starts counting. The next address AD26 is specified. Address AD26 is also '01
10' or similar operation, address AD27 is immediately next.
is specified. In this way, the process from AD25 to AD28 progresses in an extremely short time, so that 1 rinse (2) is not substantially executed, and the process moves to address AD29. Since the dehydration program 4011r is stored in the AD29, '
Next, a 'dehydration operation is performed. At this time, the operation instruction signals are 11 to 13 = 0, 14 = 1, 14 = 1, A4 = 1
As a result, a match signal is output from the gate AG5, so a mismatch signal CJ is not generated. Therefore, the addresses advance every three capes, and dewatering is performed for 5 minutes from address AD29 to address AD39. When the address AD48 is designated, the operation end program '1001' is derived. This program is converted by the instruction decoder INDc into a reset signal STOP for the flip-flop F and a reset signal Reset for the counter Cu, so that the counter Cu is reset and the flip-flop F is also reset at this address AD40. . That is, at address AD40, counter C and flip-flop F return to their initial state, and the washing machine stops operating. Since the gate AOI' is turned off, the counter Cu does not count up. This means that a washing course without 'rinsing ■' has been automatically executed. If you want to continue washing under different washing conditions and washing courses, press the start key KIO after specifying the conditions with the key switch KI to K9 and the washing course with the fusuma switch 2.
The washing operation is performed in exactly the same manner as the above operation.

In addition, if you want to temporarily stop the operation of the washing machine in the middle of the washing operation, for example in the middle of 'Wash 0', press the pause key K turtle 1.
Just press . For example, when the process is executed up to the address ADIO in FIG. 3, pressing the key K1 resets the flip-flop F, turns off the gate AGI, and stops the counting operation of the counter Cu, which is fixed at the state '001010'. At the same time, the reset output of flip-flop F is supplied to address decoder AD, so address AD 2 is specified regardless of the state of counter Cu.
0' is memorized and stops the 'washing' operation control signal that had been generated from the instruction decoder tray C until then. All you have to do is press K turtle 0 and set flip-flop F.

That is, by setting the flip-flop F, the AND gate AGI is turned on, and the address ADIQ is designated again to execute the ``wash'' operation. As described above, the washing machine of the present invention automatically performs the washing operation. [Other Embodiments] (1) The lighting control of the washing operation display plans LI to L4 may be performed using the washing operation instruction signals 11 to 14.

(2) The indicator lamps LI to L4 may indicate the one corresponding to the washing operation to be executed in the selected washing course.

In other words, when set to full course, the lamp LI~
If all of L4 are turned on and only 'dehydration' is set, only lamp L4 is turned on.Then, the lamp corresponding to the washing operation that has been executed may be turned off.■ In the above embodiment, each Lamp LI to distinguish between washing operations
Although this was done with L4, this may also be differentiated by tone.

For example, the speakers may be driven in various ways using control signals from the instruction decoder 1 to produce different tones. (2) The above digital control may be performed using a microprocessor, particularly a CPU.

As explained above, the present invention focuses on the fact that the program section can be miniaturized by digital control. However, the present invention does not simply use the digital control method used in computers etc. This is a completely new digital control method that is most convenient for controlling machines.

In other words, washing machines have very few types of operations to be controlled, do not require detailed control, and each washing operation time is
Since it has characteristics such as not having much effect on the washing results even if the washing result is deviated for 2 seconds, the ROM address scan speed is extremely slow compared to a computer, and the number of ROM addresses is extremely small to program the ROM. The content has been simplified, and ``Furthermore, during digital processing based on the program content, no numerical arithmetic processing is used, the CPU part is omitted, and the configuration of the digital processing part is extremely simplified.
The present invention employs a completely new control method in which the time counter Cu itself is used as an address counter, thereby simplifying its configuration. Further, the present invention can automatically determine the optimum time for each washing operation by simply inputting the washing conditions of the laundry object.

Furthermore, the present invention makes it easy to understand the relationship between the program contents to be selected and the selection switches using a process chart and lamps.
As is clear from the above description, the following inventions are provided in the above embodiments of the present invention. That is, the present invention stores washing operation control signals in a ROM for executing each washing operation such as washing, rinsing, dehydration, water supply, and drainage.
To provide a washing machine that generates electricity based on a program stored in the washing machine.

(2) The present invention provides a washing machine in which a plurality of types of washing programs are stored in a ROM corresponding to the washing conditions of the laundry to be washed, such as heavy dirt, normal dirt, small amount, amount of washing, etc. in {1' above.

Legs The present invention provides a washing machine in which a plurality of types of washing programs are stored in different pages of the upper OM OM in accordance with the above-mentioned item (1).

(2) The present invention provides a washing machine which selects the page of the ROM based on the output of the input means for inputting the washing conditions of the object to be washed in step [3}'.

Legs The present invention is a time counter that electronically measures the total time (however, the drain time may be excluded) when each washing operation is continuously executed in {1) to ■ above. To provide a washing machine in which this counter is also used as an address selection counter for the ROM. '61 The present invention provides a washing machine according to '51 above, which is provided with an address decoder for decoding the contents of the time counter, and selects the address of the ROM based on the output of the address decoder.

'71 The present invention provides a washing machine in which the time counter at {6'' above includes signal generating means for generating a predetermined clock pulse based on input from a power source, and a counter for counting the clock pulse.

Legs The present invention provides a washing machine according to '71, in which the pulse interval of the clock pulse is at least one wash cycle or more and shorter than the shortest operation time among various washing operation times.

(In a washing machine, differences in operating time of about 1 to 2 seconds have no effect on the washing effect, so the minimum time of 1 second that affects the washing effect is set as the minimum pulse interval.)' 91 The present invention relates to the above {1--{8)'
A washing machine is provided in which signals coded for each washing operation are stored in the ROM as a washing program.

OQ The present invention provides for each washing operation (for example, washing) in steps [5} to '8' above, such that the product of the one-step increment time of the time counter and the number of steps becomes the time required for the washing operation (for example, washing).
For example, a washing machine is provided in which encoded information for washing (washing) is continuously stored in the ROM for necessary steps.

(11) The present invention provides a washing machine having an instruction decoder for converting a washing program derived from a ROM into a predetermined control signal in 01 to 00 above.

(12) In the present invention, a plurality of key switches are provided in m to (11), and the washing condition of the laundry object, for example, when the laundry is heavily soiled,
To provide a washing machine in which washing conditions such as normal, small, large, small, etc. are individually made to correspond to the key switches, and the washing conditions are instructed by operating the key switches. (13) In the above (12), the present invention provides a slide switch as a means (washing course selection means) for instructing which washing operation to be performed among washing operations such as washing, rinsing, and dehydration. We provide washing machines that use

(1) The present invention provides a washing machine provided with a process chart illustrating all washing courses in the above (13).

(15) The present invention provides a fully automatic washing machine that automatically executes the washing course selected in the above (14).

(16) The present invention provides a washing machine provided with means for visually and/or aurally notifying the washing operation currently being carried out in the above {1} to (15).

In other words, a washing machine is provided that is provided with means for notifying the progress of the washing operation. (17) The present invention provides a washing machine according to the above (15), which displays the progress of the washing operation using the washing operation display signal on the process chart.

(18) The present invention provides a washing machine provided with a means for instructing the start of a washing operation, such as a key switch, in Items 1} to (17) above.

(19) The present invention provides a washing machine provided with a means for instructing a temporary stop of the washing operation, such as a key switch, in accordance with Items 1' to (18) above.

(20) The present invention provides a washing machine according to the above (12), which is provided with means for instructing the amount of detergent corresponding to the washing conditions of the items to be washed.

(21) The present invention relates to the above (12) “(i3), (18),
To provide a washing machine in which the washing condition input means, the washing course selection means, the start instruction means, and the operation temporary stop means in (19) are provided on the same board.

(22) The present invention provides a washing machine in the above (19), which is provided with means for blocking the supply of the clock pulse to the time counter by the output of the means for instructing a temporary stop of operation.

(23) The present invention provides a washing machine according to the above (18), wherein clock pulses are supplied to the counter by the output of the start instruction means.

(24) In the above (13), the present invention includes means for converting the output from the washing course selection means into each washing operation instruction signal, and the control signal for washing operation instruction output from the instruction decoder and the above instruction signal To provide a washing machine provided with means for detecting coincidence or mismatch.

(25) The present invention provides a washing machine that increments the counter by one step when a mismatch is detected in the above (24).

(26) The present invention provides a washing machine that increases the frequency of the clock signal when a mismatch is detected in (24) above.

(27) The present invention provides a washing machine which derives an operation end program from the upper ROM and sets each part of the machine body (for example, a counter) to an initial state when the washing course selected in the above (14) is carried out to the end.

[Effects of the present invention]

As described above, the washing machine of the present invention is equipped with a time counter that electronically counts the time it takes to perform multiple types of washing operations in succession. In order to proceed one step at a time, the above-mentioned time counter is also used as a ROM address selection counter, so that the ROM is equipped with a counter for storing the control time of each washing operation and counting the time for each washing operation. The configuration of the electronically controlled program section is extremely simple, and the cost of this section can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the operating section of the washing machine of the present invention, FIG. 2 is a block diagram of the main parts of the washing machine of the present invention, and FIG. 3 is an explanatory diagram of the program contents of the ROM. Code ``K wealth~K9: To key switch Cu: Timing counter, ROM reserved memory, etc.Instruction decoder L DV: Drive circuit.

Claims (1)

[Claims] 1 RO with washing program stored in digital code
An electronically controlled washing machine that uses the output of M to control the washing operation is provided with a time counter that electronically counts the time it takes to perform one cycle of multiple types of washing operations, and this counter The time counter is also used as a ROM address selection counter in order to advance the ROM address by one step at fixed time intervals.
The above-mentioned ROM continuously stores coded information for each washing operation for the necessary steps so that the product of the one-step increment time of the time counter and the number of steps is the required time for each washing operation. An electronically controlled washing machine featuring: