JP3457889B2 - Washing machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine in which each load is controlled by a plurality of microcomputers.

[0002]

For example, in a fully automatic washing machine, a microcomputer (hereinafter abbreviated as "microcomputer") controls loads of a washing machine motor, a valve device and the like to execute a washing operation. However, in recent years, in order to reduce costs and the like, it has been considered to provide a plurality of, for example, two microcomputers (one-chip microcomputer) and share the functions among them.

In this case, the two microcomputers are connected by a data communication line, and the sub-microcomputer receives the operation input information on the operation panel and transmits the data to the main microcomputer, and at the same time controls the load of the display, buzzer and the like. It is like this. On the other hand, the main microcomputer controls a washing machine motor, a water supply valve, a drain valve, and the like, and also transmits the data of the state of each sensor, the operating state of the motor, and the display data to the sub-microcomputer.

By the way, in this type of washing machine, a reset circuit is provided for resetting the microcomputer when the power is turned on and off (when the power switch is turned on and off). The above-mentioned two microcomputers are provided. However, the reset circuit is provided for each microcomputer, which complicates the circuit configuration and increases the cost.

If an abnormality or runaway occurs in one of the microcomputers, another microcomputer cannot control the load carried by the microcomputer and the washing machine motor continues to operate. May invite. Therefore, in order to reliably stop the load of the washing machine motor or the like when an abnormality or runaway of the microcomputer occurs, a separate monitoring circuit or the like is required, which also causes an increase in cost.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a plurality of microcomputers, which can reduce the cost by simplifying the reset circuit and can also reduce the cost of the microcomputer. (EN) A washing machine capable of reliably preventing an abnormal operation of a load when an abnormality occurs with a simple configuration.

[0007]

A washing machine of the present invention is provided with a plurality of microcomputers, and has one reset circuit for resetting the microcomputers at the rising and falling of power. While commonly provided to the above microcomputer, each of the microcomputer is configured to output a reset signal from the reset terminal when it detects that an abnormality has occurred in the data communication during normal operation, A feature is that reset terminals of the respective microcomputers are directly connected by a reset signal line so that the plurality of microcomputers are simultaneously reset when a reset signal is output from at least one microcomputer. Invention 1).

According to this, since the reset circuit is shared by two or more microcomputers, the number of reset circuits can be reduced as compared with the case where the reset circuit is provided for each microcomputer.
The configuration can be simplified. Since each microcomputer is configured to detect an abnormality in data communication during normal operation, it is possible to mutually monitor the presence or absence of abnormality or runaway between the respective microcomputers, and at least one When the microcomputer detects the occurrence of an abnormality, all the microcomputers can be reset at the same time by the reset signal output from the microcomputer.

At this time, in the communication data transmitted by each microcomputer, reset data indicating whether the microcomputer is in the reset processing state or the reset processing completed state is included, and each microcomputer is
Immediately after the reset, the reset data received from the other microcomputer may be configured to validate the received communication data when the reset processing state changes from the reset processing state to the reset processing completed state. Invention).

According to this, when each microcomputer is reset, the communication data is invalidated until the reset processing is completed in all the microcomputers, and the reset processing is completed in all the microcomputers. From that point, the communication data is validated and normal load control is performed.

Further, in this case, during normal operation,
Since the reset data that is transmitted does not enter the reset processing state, if each microcomputer is configured to determine that an abnormality has occurred when the reset data received during normal operation is in the reset processing state (claim (Invention of item 3), it is possible to detect that there is an abnormality in the microcomputer on the transmission side.

By the way, the following three methods are effective as methods for judging an abnormality in received data in data communication between microcomputers. (1) Each microcomputer is configured to continuously transmit the same communication data twice, and it is determined whether or not the reception data of the two times match. (2) Each microcomputer together with the communication data, the integrated value of the communication data. The data is transmitted, and the integrated value of the received communication data is obtained and it is determined whether or not it matches the integrated value data (3) Each microcomputer transmits the exclusive OR data of the communication data together with the communication data Configuration
Then, the exclusive OR of the received communication data is obtained and it is determined whether or not it matches the exclusive OR data. Therefore, a plurality of the above three reception data abnormality determinations are executed, and if any of them does not match, If the received data is configured to be invalidated (the invention of claim 4), it is possible to reliably determine the communication abnormality.

Further, at this time, each microcomputer may be configured to output a reset signal when it is determined that an abnormality has occurred in the transmitting microcomputer when the abnormality in the received data continues for a predetermined number of times ( (Invention of claim 5), it is possible to judge that there is a true abnormality or runaway in the microcomputer on the transmission side, not just a temporary data abnormality due to the influence of noise, etc., and abnormality detection is performed with high accuracy and certainty. be able to.

Further, the communication control signal is communicated together with the communication data, and the microcomputer on the receiving side of the communication control signal determines that the communication error occurs when the communication control signal has not changed for a predetermined time. If the determination is made (the invention of claim 6), the abnormality of the communication control signal can be surely detected, which is more effective.

After the reset process, it is preferable that each microcomputer is configured to prohibit the output of the next reset signal until the washing machine motor is stopped (the invention of claim 7). As a result, it is possible to prevent inability to control the stop of the washing machine motor, and it is possible to improve safety.

Further, the plurality of microcomputers each have unique data indicating the type of the microcomputer, and the unique data of each microcomputer can be output (the invention of claim 8). According to this, the cause of the abnormality in the data communication may be that the microcomputer type is wrongly assembled,
Whether or not it is such a factor can be easily notified by the output of unique data.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. First, FIG. 1 schematically shows an electrical configuration of a washing machine (fully automatic washing machine) according to this embodiment. Here, although not shown in detail, in the main body of the washing machine, an outer tub and an inner tub for accommodating the laundry are provided, and an agitator for water flow generation is provided at an inner bottom portion of the inner tub. The inner tub and the agitator are rotatably driven by a washing machine motor 1 provided on the outer bottom of the outer tub. The washing machine motor 1 is composed of an inverter drive type motor and is configured to be able to control the rotation speed.

In this case, by switching by the clutch mechanism 2, only the stirring member is rotationally driven at the time of washing or rinsing, and the inner tank is rotationally driven together with the stirring member at the time of dehydration or dehydration rinsing. . Further, the washing machine body is provided with a water supply valve 3 for supplying water to the inner tub and a drain valve 4 for draining water from the inner tub. Further, a water level sensor 5 for detecting the water level in the inner tank, a lid switch 6 for detecting opening / closing of a lid that closes the upper surface of the main body, and the like are provided.

On the other hand, an operation panel 7 as shown in FIG. 6 is provided on the top cover provided on the upper part of the main body of the washing machine. This operation panel 7 has an operation switch section 8 having a selection key 8a for the user to select a washing course and a start key 8b for instructing the start of operation, and displays the selected course, the current operation state, etc. The display unit 9 includes a number display unit 9a for performing the operation. Further, the operation panel 7 has a power switch 1
0 is also provided. Further, as shown in FIG. 1, a notification buzzer 11 is provided in the top cover.

A plurality of microcomputers (hereinafter abbreviated as "microcomputers") are provided in the control unit provided in the top cover. As shown in FIG. 1, in this embodiment, two microcomputers, that is, a main microcomputer (hereinafter abbreviated as "main microcomputer") 12 and a sub-microcomputer (hereinafter abbreviated as "sub-microcomputer") 13 are provided. Has been.

Among them, the main microcomputer 12 controls the washing machine motor 1 via an inverter circuit 14, and also drives the clutch mechanism 2, the water supply valve 3 and the drain valve 4 via a drive circuit 15. It is designed to be controlled. Further, a detection signal of a rotation sensor 16 for detecting the rotation of the washing machine motor 1 is input to the main microcomputer 12, and detection signals from the water level sensor 5 and the lid switch 6 are input. It has become so.

The sub-microcomputer 13 is adapted to receive an operation input signal from the operation switch section 8 and to control the display section 9 and the buzzer 11. The microcomputers 12 and 13 store unique data indicating the types of the microcomputers 12 and 13, respectively. In this case, different microcomputers 12 and 13 are incorporated depending on the model (capacity) of the washing machine, and the unique data is, for example, capacity 5 kg, 6 kg, 7
It is considered to be one of four types for Kg and 8 Kg.

At this time, in the washing machine main body, a DC power supply forming circuit 1 for converting an AC power supply from the commercial AC power supply 17 into a DC power supply for the inverter circuit 14 of the washing machine motor 1.
8 is provided, and an electronic circuit power supply forming circuit 19 that generates a DC power supply for an electronic circuit from the output of the DC power supply forming circuit 18 is provided. Each microcomputer 12, 1
The drive circuit 3 is supplied with drive power from the electronic circuit power supply forming circuit 19. Although not shown in the drawing, the power switch 10 is arranged in the energization path between the commercial AC power supply 17 and the DC power supply forming circuit 18.

The reset terminal of the main microcomputer 12 and the reset terminal of the sub-microcomputer 13 are directly connected by a reset signal line 20. At this time, the output from the DC power source forming circuit 18, one for resetting (ON, OFF state of the power switch 10) to both the microcomputer 12 and 13 at the time of the rise of the power supply and falling
One reset circuit 21 is commonly provided for both microcomputers 12 and 13. As a result, both microcomputers 12 and 13 are simultaneously reset by the reset signal output from the reset circuit 21.

The main microcomputer 12 and the sub-microcomputer 13 are connected by four data communication lines 22 in this case, and the communication control means 12a and 13a provided in the microcomputers 12 and 13 respectively. Communication data is transmitted and received. The microcomputers 12 and 13 are configured to control the loads and execute the washing operation while constantly transmitting and receiving data to and from each other.

In this embodiment, as shown in FIG. 4, the communication control signal CS, the serial communication clock signal SCK, and the sensors 5, 6 from the main microcomputer 12 to the sub-microcomputer 13 are connected by the respective data communication lines 22. And the communication data DO such as the data of the state of the motor 1 and the operating state of the motor 1 and the data for display are transmitted.
The main microcomputer 12 is adapted to receive communication data DI such as operation input information from the sub-microcomputer 13 (transmit from the sub-microcomputer side 13).

Here, FIG. 4 shows a timing chart of data communication, in which the cue is performed by the communication control signal CS and the serial communication clock signal S.
32 bytes of communication data are transmitted (DO) and received (DI) repeatedly twice in synchronization with CK. The time from the first cue of the communication control signal CS to the next cue is about 36 ms, and during normal washing operation, data communication between the two microcomputers 12 and 13 is always performed. There is.

Further, in this embodiment, the structure of communication data of 32 bytes (1 byte = 8 bits) is as shown in FIG. That is, byte "0" to byte "31"
Out of 32 bytes up to byte "0" to byte "2"
28 bytes up to 7 "are used as washing machine control data, byte" 28 "is used as reset data, and byte" 29 "is used.
And 2 bytes of "30" are the integrated value data of the communication data, and the byte "31" is the exclusive OR data.

The reset data is the microcomputer 1
2 and 13 are data indicating whether the reset processing state or the reset processing completed state is set. For example, [A5] (hexadecimal display) is set in the reset processing state, and [69] (hexadecimal display) is set in the reset processing completed state. It is supposed to be done. Further, the integrated value data is set as a result of accumulating the data of each 1's complement of 29-byte data from byte “0” to byte “28”, and the exclusive OR data is byte “0”. To 3 from byte "30"
The result of sequentially performing exclusive OR (XOR) on 1-byte data is set.

As will be described later in the explanation of the operation, each of the microcomputers 12 and 13 (communication control means 12a and 13a) receives the data received from the other microcomputer 13 and 12 at the time of normal operation due to its software configuration. When the abnormality is detected in the other microcomputers 13 and 12 by constantly monitoring, the reset generating means 12b and 13b generate a reset signal and output the reset signal from the reset terminal. It is supposed to reset 13.

At this time, more specifically, each microcomputer 1
When the communication data is received, 2 and 13 (1) determine whether or not the received data of two times match, (2) determine an integrated value of the received data and determine whether or not it matches the integrated value data Yes, (3) three types of received data abnormality determination processing of determining the exclusive OR of the received data and determining whether or not it matches the exclusive OR data, and even one of them causes a mismatch In that case, the communication data is invalidated, and the number of times of the mismatch is counted, and when the mismatch is continued for a predetermined number of times, for example 16 times, it is judged that an abnormality has occurred. There is.

Further, each of the microcomputers 12 and 13 determines that an abnormality has occurred even when the reset data in the communication data received during normal operation is in the reset processing state [A5]. . Furthermore, sub-microcomputer 1
3, the communication control signal CS transmitted from the main microcomputer 12 is constantly monitored for a predetermined time, for example, 1
When there is no change in the control signal CS for a second, it is determined that the communication is abnormal.

Immediately after resetting, each of the microcomputers 12 and 13 has the other microcomputer 13 or 1
The communication data received is validated based on the reset data received from No. 2 being changed from the reset processing state [A5] to the reset processing completed state [69]. After the reset process, each of the microcomputers 12 and 13 is prohibited from outputting the next reset signal until the washing machine motor 1 is stopped.

The sub-microcomputer 13 is the microcomputer 1
It is also determined whether or not the unique data of the data Nos. 2 and 13 match, and if they do not match, the contents of each of the unique data (in this case, a number indicating the capacity) are displayed on the display unit 9 (numeral display unit 9).
It is designed to be output to a). In this case, when a special operation is performed on the operation switch unit 8, the contents of the unique data of the microcomputers 12 and 13 may be displayed on the display unit 9 regardless of whether they match or not.

Next, the operation of the above configuration will be described with reference to FIGS. When the power switch 10 is turned on to turn on the power, an output from the electronic circuit power supply forming circuit 19 causes the reset circuit 21 to operate and a reset signal to be output, so that both microcomputers 12 and 13 are simultaneously reset. After the reset processing, based on the switch operation of the operation switch unit 8, each load of the washing machine motor 1 and the like is controlled while performing data communication between the main microcomputer 12 and the sub-microcomputer 13, and the washing operation is executed. .
Even when the power is turned off, the reset circuit 2
Both microcomputers 12 and 13 are simultaneously reset by 1.

The flow charts of FIGS. 2 and 3 are as follows.
The control procedure of the data communication which the sub-microcomputer 13 performs is shown. The main microcomputer 12 does not perform steps S1 and S22 and S23, but performs substantially the same processing as the sub-microcomputer 13. Therefore, the sub-microcomputer 13 will be described below as a representative. Although FIGS. 2 and 3 are a series of flowcharts, they are divided into two diagrams due to space limitations.

First, in FIG. 2, in step S1,
It is determined whether or not the communication control signal CS transmitted from the main microcomputer 12 has changed. If there is a change (Yes), the process proceeds to the next step S2, and if there is no change in the control signal CS for a predetermined time, for example, 1 second (No), it is determined that an abnormality has occurred in the main microcomputer 12, and the process will be described later. Proceed to step S13.

In step S2, it is determined whether or not the current state (sub-microcomputer 13) of itself is the reset processing state. If it is the reset processing state (Yes), step S2
At 3, the reset data in the communication data is set to [A5] indicating the reset processing state. On the other hand, if the reset process is completed (No in step S2), [69] indicating the reset process completed state is set in the reset data in step S4.

In the next step S5, the remaining communication data is set. This communication data is, as described above, 2
8 bytes of washing machine control data, 1 byte of the reset data, 2 bytes of integrated value data obtained by integrating the 29 bytes of data, and 1 byte of exclusive OR of 31 bytes And logical OR data. Then, the communication data is transmitted to the main microcomputer 12 (the same data is repeatedly transmitted twice) (step S6), and at the same time, the communication data is received from the main microcomputer 12 (step S).
7).

When the data from the main microcomputer 12 is received, it is first determined in step S8 whether or not the received data repeatedly transmitted twice match, and if they match (Yes), the next step S9. At 29, 29 bytes of the received data from byte “0” to byte “28” are integrated, and it is determined whether the result matches the integrated value data. If they match (Yes), the next step In S10, the byte "0" to the byte "3" of the received data
An exclusive OR operation of 31 bytes of "0" is performed, and it is determined whether or not it matches the exclusive OR data.

If there is a mismatch (No in any of steps S8 to S10), the variable for counting the number of abnormalities is incremented by 1 in the next step S11, and step S12 is executed. At, it is determined whether the number of abnormalities has reached 16. If the number of abnormalities is less than 16 (No in step S12), the received communication data is invalidated, and the process returns as it is. If the number of abnormalities is 16 or more (Yes in step S12), next To step S13.

Referring to FIG. 3, in step S13, it is determined whether or not the current state (sub-microcomputer 13) itself is the reset processing state, and if it is the reset processing state (Ye
s), it returns as it is, and if it is not in the reset processing state (No), in the next step S14, the washing machine motor 1
It is determined whether or not is stopped. If the washing machine motor 1 is operating (No), the washing machine motor 1 is reset as it is, and if the washing machine motor 1 is stopped (Yes), a reset signal is output from the reset terminal in step S15.

On the other hand, if all of the above steps S8 to S10 match (Yes in step S10),
In step S16, it is determined whether or not the current state is the reset processing state. When it is not in the reset processing state (No in step S16), the next step S17
In the reset processing status [A
5], and if it is in the reset processing state [A5] (Yes), it is determined to be abnormal, and the process proceeds to step S14. Similarly, under the condition that the washing machine motor 1 is stopped. A reset signal is output from the reset terminal (step S15). When the received reset data is in the reset process completed state [69] (No in step S17), the received data is validated (step S18), and the variable for counting the number of abnormalities is also cleared. (Step S19).

When the current state is the reset processing state (Yes in step S16), it is determined in step S20 whether the received reset data is in the reset processing state [A5] and the reset processing is performed. If the processing state is [A5] (Yes), the process directly returns. On the other hand, if the reset processing completion state is [69] (No in step S20), the reset processing completion state is set in step S21, and the received data is validated similarly to the above (step S18). , And the variable that counts the number of abnormalities is also cleared (step S
19).

After that, in step S22, the unique data transferred from the main microcomputer 12 and its own unique data are checked, and if they match (Yes), the process directly returns, and if they do not match ( No), and in the next step S23, the unique data are displayed on the display unit 9. FIG. 6 shows an example of the display at that time, for example, the main microcomputer 12 is for a capacity of 7 kg,
When the sub-microcomputer 13 has a capacity of 6 kg, the numeral display portion 9a displays "7" and "6".

As described above, the communication control signal CS
Does not change over a certain period of time, or when abnormalities in received data are detected 16 times or more in a row, or when the reset signal received during normal operation is in the reset processing state [A5], the main microcomputer 1
It is judged that an abnormality has occurred in No. 2, and the reset signal is output from the reset terminal by the reset generation means 13b of the sub-microcomputer 13, so that both microcomputers 12 and 13 are reset at the same time.

Although detailed description is omitted, such processing is similarly performed on the main microcomputer 12 side, and based on the determination of abnormality in the received data from the sub-microcomputer 13 and the abnormality in the reset data from the sub-microcomputer 13. It is determined that an abnormality has occurred in the microcomputer 13, and when an abnormality is detected, a reset signal is output from the reset terminal by the reset generation means 12b of the main microcomputer 12, and both microcomputers 1
2 and 13 are reset at the same time.

Further, when the microcomputers 12 and 13 are reset, the communication data is invalid until the reset processing of both microcomputers 12 and 13 is completed, and the communication data is valid from the time when the reset processing is surely completed. After that, normal load control will be performed.
Furthermore, since the reset signal is output in consideration of the stopped state of the washing machine motor 1, it is possible to prevent inability to control the stop of the washing machine motor 1.

As described above, according to this embodiment, the reset circuit 21 functioning at the time of the rise and the fall of the power supply is made common to the two microcomputers 12 and 13, so that each microcomputer has a reset circuit 21. The number of reset circuits 21 is smaller than that of the conventional one in which a reset circuit is provided, and in this case, only one reset circuit 21 is required, and the configuration can be simplified and the cost can be reduced.

The microcomputers 12 and 13 mutually monitor whether or not an abnormality has occurred in data communication during normal operation, and when at least one of the microcomputers 12 and 13 detects the abnormality, the microcomputer 12 or 13 is detected. By the reset signal output from 13, both microcomputers 12, 1
Since 3 is reset at the same time, microcomputer 1
It is possible to obtain an excellent effect that the abnormal operation of the load when the abnormal conditions 2 and 13 occur can be reliably prevented with a simple configuration.

At this time, in the present embodiment, the abnormality determination of the received data is performed by three kinds of methods, the received data is invalidated when the abnormality occurs, and the microcomputer 12, when the abnormality of the received data continues for a predetermined number of times, Since it is determined that the abnormality of 13 has occurred, and further, the abnormality of the reset data and the abnormality of the communication control signal CS are also determined, various abnormalities of the microcomputers 12 and 13 can be determined, and abnormality detection can be comprehensively performed. In addition, it can be performed with high accuracy and can be highly reliable.

Further, particularly in this embodiment, at the time of resetting, the data communication is surely performed in a state where the reset processing of both the microcomputers 12 and 13 is completed, so that the reliability can be improved, and further, the reliability can be improved. , Washing machine motor 1
Since the reset is performed under the condition of the stop of, the safety can be improved. Moreover, the microcomputer 12, 13
Since it is possible to output the unique data of
When the type of the microcomputer 12 is wrongly assembled, it is possible to obtain an advantage that it can be easily notified.

The present invention is not limited to the above-described embodiment, but may be configured such that load control is shared by, for example, three or more microcomputers, and an abnormality determination process for three types of received data. It may be configured to perform any two of them instead of performing all, etc.
The invention can be appropriately modified and implemented within a range not departing from the gist.

[0054]

As is apparent from the above description, according to the washing machine of the present invention, the washing machine is provided with a plurality of microcomputers, and the microcomputers are reset when the power is turned on and off. One reset circuit for this purpose is shared by two or more microcomputers, and each microcomputer resets when it detects that an abnormality has occurred in data communication during normal operation. A reset signal line is provided between the reset terminals of each microcomputer so that a plurality of microcomputers are simultaneously reset when at least one microcomputer outputs a reset signal. Since it is directly connected by, the cost can be reduced by simplifying the reset circuit. It it is, exhibits an excellent practical effect that it is possible to reliably prevent abnormal operation of the load at the time of occurrence of abnormality in the microcomputer with a simple configuration.

[Brief description of drawings]

FIG. 1 is a block diagram showing an electrical configuration of a washing machine according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a procedure of communication control (part 1).

FIG. 3 is a flowchart (part 2) showing the procedure of communication control.

FIG. 4 is a timing chart of data communication.

FIG. 5 is a diagram schematically showing the structure of communication data.

FIG. 6 is a plan view of the operation panel.

[Explanation of symbols]

In the drawing, 1 is a washing machine motor, 9 is a display unit, 10 is a power switch, 12 is a main microcomputer, 13 is a sub-microcomputer, 12a and 13a are communication control means, 12b and 13b are reset generation means, and 20 is reset. A signal line, 21 is a reset circuit, and 22 is a data communication line.

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Ikeda 991, Anada-cho, Seto-shi, Aichi Toshiba EV Co., Ltd., Nagoya Office (72) Inventor Fumihiro Imamura 991, Akita-ken, Seta-shi Toshiba Corporation Aichi Factory (56) Reference JP 5-7690 (JP, A) JP 9-54607 (JP, A) JP 9-282002 (JP, A) JP 3-251932 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) D06F 1/00-51/02 H02P 5/41 302

Claims (8)

(57) [Claims] 1. A microcomputer comprising a plurality of microcomputers, wherein the load of a washing machine motor or the like is controlled while transmitting and receiving communication data between the microcomputers, wherein the microcomputer is used at the time of power supply rise and fall. One reset circuit for resetting is provided in common to two or more microcomputers, and each of the microcomputers has a reset terminal when detecting an abnormality in data communication during normal operation. Reset signal line between the reset terminals of each microcomputer so that the plurality of microcomputers are simultaneously reset when the reset signal is output from at least one microcomputer. Directly connected by A washing machine characterized by that. 2. The communication data transmitted by each microcomputer includes reset data indicating whether the microcomputer is in a reset processing state or a reset processing completion state, and each microcomputer has another data immediately after reset. The laundry according to claim 1, wherein the reset data received from the microcomputer is configured to validate the received communication data based on a change from the reset processing state to the reset processing completed state. Machine. 3. The washing machine according to claim 2, wherein each of the microcomputers determines that an abnormality has occurred when the reset data received during the normal operation is in the reset processing state. 4. The washing machine according to claim 1, wherein each of the microcomputers executes a plurality of reception data abnormality determination processes of (1) to (3) below. (1) Each microcomputer is configured to continuously transmit the same communication data twice, and it is determined whether or not the reception data of the two times match, and if there is a mismatch, the reception data is invalidated. (2) Each microcomputer transmits the integrated value data of the communication data together with the communication data, determines the integrated value of the received communication data, and invalidates the received data when the integrated value data does not match. (3) Each microcomputer transmits the exclusive OR data of the communication data together with the communication data,
The exclusive OR of the received communication data is obtained, and if the exclusive OR data does not match, the received data is invalidated. 5. Each of the microcomputers is configured to output a reset signal when it is determined that an abnormality has occurred in the transmitting-side microcomputer when the abnormality in the received data has continued for a predetermined number of times. The washing machine according to claim 4. 6. The communication control signal is configured to be communicated together with the communication data, and the microcomputer on the receiving side of the communication control signal communicates when the communication control signal does not change for a predetermined time. The washing machine according to claim 1, wherein the washing machine is determined to be abnormal. 7. The microcomputer according to claim 1, wherein after the reset processing, the output of the next reset signal is prohibited until the washing machine motor is stopped. Washing machine. 8. The plurality of microcomputers each have unique data indicating the type of the microcomputer, and the unique data of each microcomputer can be output. The washing machine according to any one.