JP2000070590A - Washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain cost reduction based on the simplification of a reset circuit and to surely prevent the abnormal operation of a load at the time of abnormality occurrence in a microcomputer in simple configuration concerning a washing machine provided with plural microcomputers. SOLUTION: This washing machine is provided with a main microcomputer 12 for controlling a washing machine motor 1 or the like and a sub microcomputer 13 for controlling a display part 9 or the like. The reset terminals of both the microcomputers 12 and 13 are directly connected by a reset signal line 20. A reset circuit 21 is commonly provided for resetting both the microcomputers 12 and 13 when turning on and off a power source. Both the microcomputers 12 and 13 are connected by a data communication line 22 and load control is executed while performing data communication. Between the microcomputers 12 and 13, the occurrence of abnormality in the data communication at the time of ordinary operation is mutually monitored and when the occurrence of abnormality is detected in at least one of microcomputers 12 and 13, corresponding to the reset signal outputted from that microcomputer 12 or 13, both the microcomputers 12 and 13 are simultaneously reset.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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 each load such as a washing machine motor and a valve device to execute a washing operation. However, in recent years, in order to reduce costs and the like, a plurality of microcomputers (one-chip microcomputer), for example, are provided, and functions are shared among them.

In this case, the two microcomputers are connected by a data communication line, and the sub-microcomputer receives operation input information on the operation panel, transmits the data to the main microcomputer, and controls loads such as a display and a buzzer. It has become. On the other hand, the main microcomputer controls a washing machine motor, a water supply / drainage valve, and the like, and transmits data of a state of each sensor, an operation state of the motor, display data, and the like to the sub-microcomputer.

In this type of washing machine, a reset circuit is provided for resetting the microcomputer when the power supply rises and falls (when the power switch is turned on and off). In such a case, a reset circuit is provided for each microcomputer, and the circuit configuration is complicated and the cost is increased.

If an abnormality or a runaway occurs in one of the microcomputers, the other microcomputer cannot control the load carried by the microcomputer and, for example, the washing machine motor may continue to operate. There is a possibility of inviting. For this reason, a separate monitoring circuit or the like is required in order to surely stop the load of the washing machine motor or the like when an abnormality occurs in the microcomputer or when a runaway occurs, which also increases the cost.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a microcomputer having a plurality of microcomputers. An object of the present invention is to provide a washing machine capable of reliably preventing abnormal operation of a load when an abnormality occurs with a simple configuration.

[0007]

SUMMARY OF THE INVENTION A washing machine according to the present invention comprises a plurality of microcomputers, and includes two or more reset circuits for resetting the microcomputer when a power supply rises and falls. The microcomputer is provided in common, and each of the microcomputers is configured to output a reset signal from a reset terminal when detecting that an abnormality has occurred in data communication during normal operation. A reset signal line is directly connected between reset terminals of the microcomputers so that the plurality of microcomputers are simultaneously reset when a reset signal is output from one microcomputer. invention).

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 a 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 each microcomputer for the occurrence of an abnormality or runaway, and to monitor at least one of the microcomputers. When the microcomputer detects an abnormality, all the microcomputers can be reset simultaneously by a reset signal output from the microcomputer.

At this time, reset data indicating whether the microcomputer is in a reset processing state or a reset processing completed state is included in communication data transmitted by each microcomputer, and each microcomputer includes:
Immediately after the reset, the communication data received may be validated based on the fact that the reset data received from another microcomputer has changed 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 microcomputers, and the reset processing is completed in all microcomputers. From that point on, the communication data is validated and normal load control is performed.

In this case, during normal operation,
Since the transmitted reset data does not enter the reset processing state, each microcomputer may be configured to determine that an abnormality has occurred when the reset data received during the normal operation is in the reset processing state. Item 3), it is possible to detect that the transmission side microcomputer has an abnormality.

By the way, the following three methods are effective for judging the abnormality of the received data in the data communication between the microcomputers. (1) Each microcomputer transmits the same communication data twice consecutively, and it is determined whether or not the two received data match. (2) Each microcomputer together with the communication data has an integrated value of the communication data. Data is transmitted, and the integrated value of the received communication data is determined to determine whether or not the value matches the integrated value data. (3) Each microcomputer transmits exclusive OR data of the communication data together with the communication data Configuration,
Exclusive OR of the received communication data is determined to determine whether the received data matches the exclusive OR data. Therefore, a plurality of the above three received data abnormality determinations are executed. If the configuration is such that the received data is invalidated (the invention of claim 4), it is possible to reliably determine a communication abnormality.

At this time, if each microcomputer determines that an abnormality has occurred in the transmitting microcomputer and outputs a reset signal when the abnormality of the received data continues for a predetermined number of times, According to the fifth aspect of the invention, it is possible to determine that the transmission-side microcomputer has a genuine abnormality or runaway, rather than a mere temporary data abnormality due to the influence of noise or the like, and to perform abnormality detection with high accuracy and reliability. be able to.

Further, the communication control signal is transmitted together with the communication data, and the microcomputer on the receiving side of the communication control signal determines that the communication is abnormal when there is no change in the communication control signal for a predetermined time. If the determination is made (the invention of claim 6), the abnormality of the communication control signal can be reliably detected, which is more effective.

Preferably, after the reset processing, the output of the next reset signal is inhibited until the washing machine motor is stopped (the seventh aspect of the present invention). Accordingly, it is possible to prevent the control of the stopping of the washing machine motor from being disabled, thereby improving safety.

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

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One 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 the present embodiment. Here, although not shown in detail, an outer tub and an inner tub for accommodating laundry are provided in the main body of the washing machine, and an agitator for generating a water flow is provided at an inner bottom of the inner tub. The inner tub and the stirrer are rotatably driven by a washing machine motor 1 provided on the outer bottom of the outer tub. The washing machine motor 1 is an inverter-driven motor, and is configured to be able to control the rotation speed.

In this case, the switching by the clutch mechanism 2 allows only the agitator to be rotationally driven during washing or rinsing, and the inner tank is rotationally driven together with the agitator during dehydration or dehydration rinsing. . The washing machine main 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 a water level in the inner tank, a lid switch 6 for detecting opening and closing of a lid for closing an upper surface of the main body, and the like are also provided.

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

The control unit provided in the top cover is provided with a plurality of microcomputers (hereinafter abbreviated as "microcomputer"). 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. Have been.

The main microcomputer 12 controls the washing machine motor 1 via an inverter circuit 14, and controls the clutch mechanism 2, the water supply valve 3 and the drain valve 4 via a drive circuit 15. Control. The main microcomputer 12 receives a detection signal from a rotation sensor 16 that detects the rotation of the washing machine motor 1 and receives detection signals from the water level sensor 5 and the lid switch 6. It has become so.

The sub-microcomputer 13 receives an operation input signal from the operation switch section 8 and controls 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 for each model (capacity) of the washing machine, and the unique data includes, for example, a capacity of 5 kg, a capacity of 6 kg, and a capacity of 7 kg.
One of four types for Kg and 8Kg.

At this time, the washing machine main body includes a DC power supply forming circuit 1 for converting an AC power supply from a 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 for generating a DC power supply for an electronic circuit from the output of the DC power supply forming circuit 18 is provided. Each of the microcomputers 12 and 1
Reference numeral 3 denotes a drive power supply from the electronic circuit power supply forming circuit 19. Although not shown, the power switch 10 is provided in an energizing 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 reset circuit 21 for resetting the microcomputers 12 and 13 at the time of rising and falling of the power supply (when the power switch 10 is turned on and off) is operated by the output of the DC power supply forming circuit 18. 12 and 13 are provided in common. As a result, both microcomputers 1 are reset by the reset signal output from the reset circuit 21.
2, 13 are reset at the same time.

The main microcomputer 12 and the sub-microcomputer 13 are connected by four data communication lines 22 in this case, and are controlled by 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 control the loads to execute the washing operation while constantly transmitting and receiving data to and from each other.

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

FIG. 4 is a timing chart of the data communication. In this case, the head is searched by the communication control signal CS and the serial communication clock signal S
In synchronization with CK, 32-byte communication data is repeatedly transmitted (DO) and received (DI) twice. The time from the start of the communication control signal CS to the next start is about 36 ms, and the data communication between the microcomputers 12 and 13 is always performed during the normal washing operation. I have.

In this embodiment, the structure of the communication data of 32 bytes (1 byte = 8 bits) is as shown in FIG. That is, from byte “0” to byte “31”
Of the 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 "30" are the integrated value data of the communication data, and byte "31" is the exclusive OR data.

The reset data is stored in the microcomputer 1
Data 2 and 13 indicate the reset processing state or the reset processing completed state. 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. In addition, the integrated value data is set to a result obtained by integrating 1-complement data of 29-byte data from byte “0” to byte “28”, and the exclusive-OR data is set to byte “0”. 3 from to "30"
A result obtained by sequentially performing exclusive OR (XOR) on 1-byte data is set.

As will be described later, the microcomputers 12 and 13 (communication control means 12a and 13a) each receive data from the other microcomputers 13 and 12 during normal operation due to their software configuration. When the other microcomputers 13 and 12 are constantly monitored and an abnormality is detected, a reset signal is generated by reset generating means 12b and 13b and the reset signal is output from a reset terminal. 13 is reset.

At this time, more specifically, each microcomputer 1
When the communication data is received, the communication data (2) and (13) determine whether or not the two received data matches, or (2) determine the integrated value of the received data and determine whether or not the received data matches the integrated value data. (3) determining the exclusive OR of the received data to determine whether the data matches the exclusive OR data, and performing three types of received data abnormality determination processing. In such a case, the communication data is invalidated, the number of mismatches is counted, and if the mismatch is repeated a predetermined number of times, for example, 16 times, it is determined that an abnormality has occurred. I have.

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, the sub microcomputer 1
In 3, the communication control signal CS transmitted from the main microcomputer 12 is constantly monitored, and for a predetermined time, for example, 1
If there is no change in the control signal CS over a period of seconds, it is determined that a communication error has occurred.

Immediately after the reset, the other microcomputers 12, 13 are connected to the other microcomputers 13, 1
2, the received communication data is validated based on a change from the reset processing state [A5] to the reset processing completion state [69]. After the reset process, the microcomputers 12 and 13 are prohibited from outputting the next reset signal until the washing machine motor 1 stops.

The sub-microcomputer 13 is provided with each microcomputer 1
It is also determined whether or not the unique data items 2 and 13 match, and if they do not match, the contents (in this case, a number representing the capacity) of each unique data item are displayed on the display unit 9 (numerical display unit 9).
a). In this case, when a special operation is performed on the operation switch unit 8, the content of the unique data of each of the microcomputers 12 and 13 may be displayed on the display unit 9 regardless of the coincidence.

Next, the operation of the above configuration will be described with reference to FIGS. When the power switch 10 is turned on and the power is turned on, the reset circuit 21 is operated by the output from the electronic circuit power supply forming circuit 19 to output a reset signal, and the microcomputers 12 and 13 are simultaneously reset. After the reset process, based on the switch operation of the operation switch unit 8, each load such as the washing machine motor 1 is controlled while performing data communication between the main microcomputer 12 and the sub-microcomputer 13, and the washing operation is performed. .
When the power supply falls, the reset circuit 2
1 resets both microcomputers 12 and 13 simultaneously.

Now, the flowcharts of FIGS. 2 and 3 are as follows.
4 shows a control procedure of data communication executed by the sub-microcomputer 13. The main microcomputer 12 performs substantially the same processing as that of the sub-microcomputer 13 except that the processing of steps S1 and S22 and S23 is not performed. Therefore, the sub-microcomputer 13 will be described below as a representative. 2 and 3 are a series of flowcharts, which are divided into two figures due to space limitations.

First, in FIG. 2, in step S1,
It is determined whether 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, one second (No), it is determined that an abnormality has occurred in the main microcomputer 12, and it will be described later. The process proceeds to step S13.

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

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

When the data from the main microcomputer 12 is received, it is first determined in step S8 whether or not the received data transmitted twice is identical. If the data is identical (Yes), the next step S9 is performed. In step (2), 29 bytes of bytes "0" to "28" of the received data are integrated, and it is determined whether or not the result matches the integrated value data. If the result matches (Yes), the next step is performed. At S10, the bytes “0” to “3” of the received data
A 31-byte exclusive OR operation of "0" is performed, and it is determined whether or not the result matches the exclusive OR data.

If there is any discrepancy (No in any of steps S8 to S10), in the next step S11, a variable for counting the number of abnormalities is incremented by one, and in step S12 It is determined whether the number of abnormalities has reached 16 times. If the number of abnormalities is less than 16 (No in step S12), the process returns as it is while invalidating the received communication data. If the number of abnormalities is 16 or more (Yes in step S12), the next step is performed. Go to step S13.

Referring to FIG. 3, in step S13, it is determined whether or not the current state of itself (sub-microcomputer 13) is in a reset processing state.
s), return as it is, and if it is not in the reset processing state (No), in the next step S14, the washing machine motor 1
Is stopped. If the washing machine motor 1 is operating (No), the reset is performed as it is. 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. If it is not in the reset processing state (No in step S16), the next step S17
, The received reset data is in the reset processing state [A
5], and if it is in the reset processing state [A5] (Yes), it is determined that there is an abnormality, and the process proceeds to step S14. Similarly, on condition that the washing machine motor 1 is stopped. Then, a reset signal is output from the reset terminal (step S15). When the received reset data is in the reset processing completion 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).

If the current state is the reset processing state (Yes in step S16), it is determined in step S20 whether or not the received reset data is in the reset processing state [A5]. If it is the processing state [A5] (Yes), the process returns. On the other hand, if the reset process is completed [69] (No in step S20), the reset process is completed in step S21, and the received data is validated as described above (step S18). And the variable for counting the number of abnormalities is cleared (step S
19).

Thereafter, in step S22, the unique data transferred from the main microcomputer 12 and its own unique data are checked. If they match (Yes), the process returns as it is. No), and in the next step S23, those 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,
If the sub-microcomputer 13 is for a capacity of 6 kg, "7" and "6" are displayed on the numeric display section 9a.

As described above, the communication control signal CS
When there is no change for a certain period of time, when an abnormality in the received data is detected 16 times or more continuously, or when the reset signal received during normal operation is in the reset processing state [A5], the main microcomputer 1
2 is determined to be abnormal, a reset signal is output from the reset terminal by the reset generating means 13b of the sub-microcomputer 13, and both the microcomputers 12, 13 are reset at the same time.

Although a detailed description is omitted, such processing is performed in the same way on the main microcomputer 12 side, and based on the judgment of the abnormality of the received data from the sub-microcomputer 13 and the abnormality of 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 a reset terminal by the reset generation means 12 b of the main microcomputer 12.
2 and 13 are reset at the same time.

When the microcomputers 12 and 13 are reset, the communication data is invalidated until the reset processing of the microcomputers 12 and 13 is completed. That is, normal load control is performed.
Further, since the reset signal is output in consideration of the stop state of the washing machine motor 1, it is possible to prevent the control of the stop of the washing machine motor 1 from being disabled.

As described above, according to the present embodiment, the reset circuit 21 functioning when the power supply rises and falls is shared by the two microcomputers 12 and 13, so that each microcomputer has its own circuit. The number of reset circuits 21 is smaller than that of a conventional circuit provided with a reset circuit. In this case, only one reset circuit can be used, so that 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. When at least one of the microcomputers 12 and 13 detects an abnormality, the microcomputer 12 or 13 detects the abnormality. The reset signal output from the microcomputer 13 causes the microcomputers 12, 1
3 are reset at the same time.
It is possible to obtain an excellent effect that the abnormal operation of the load at the time of occurrence of the abnormalities 2 and 13 can be reliably prevented with a simple configuration.

At this time, in the present embodiment, the abnormality of the received data is determined by three kinds of methods, and the received data is invalidated in the event of an abnormality. 13 as well as an abnormality in reset data and an abnormality in the communication control signal CS. Therefore, various abnormalities in 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.

In particular, in the present embodiment, data communication is reliably performed in a state where the reset processing of both the microcomputers 12 and 13 is completed at the time of resetting, so that reliability can be improved. , Washing machine motor 1
Since the reset is performed on the condition that the operation is stopped, safety can be improved. Moreover, the microcomputers 12 and 13
Because it was configured to be able to output the unique data of
When the type of the microcomputer 12 is erroneously assembled, there is an advantage that the user can easily be notified of the fact.

The present invention is not limited to the above-described embodiment. For example, a configuration may be employed in which load control is shared by three or more microcomputers. Instead of performing all, it may be configured to perform any two of them.
The present invention can be appropriately changed and implemented without 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 microcomputer is reset when the power supply rises and falls. A common reset circuit for two or more microcomputers, and each microcomputer outputs a reset signal from a reset terminal when detecting that an abnormality has occurred in data communication during normal operation. Since the reset terminals of each microcomputer are directly connected by a reset signal line so that a plurality of microcomputers are simultaneously reset when a reset signal is output from at least one microcomputer, the reset circuit Cost can be reduced by simplifying Rutotomoni, exhibits an excellent practical effect that it is possible to reliably prevent an abnormal operation of the simple configuration of the load upon occurrence of abnormality in the microcomputer.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating 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 showing a procedure of communication control (part 2);

FIG. 4 is a timing chart of data communication.

FIG. 5 is a diagram schematically showing a configuration of communication data.

FIG. 6 is a plan view of an 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 a reset. A signal line, 21 indicates a reset circuit, and 22 indicates a data communication line.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroshi Ikeda 991 Anada-cho, Seto-shi, Aichi Nagoya Office, Toshiba A-V E Corporation (72) Inventor Fumihiro Imamura 991, Anata-cho, Seto-shi, Aichi Co., Ltd. F term in Toshiba Aichi factory (reference)

Claims (8)

[Claims] 1. A microcomputer comprising a plurality of microcomputers for controlling a load such as a motor of a washing machine while transmitting and receiving communication data between the microcomputers. A reset circuit for resetting is provided in common for two or more microcomputers, and each of the microcomputers resets from a reset terminal when detecting that an abnormality has occurred in data communication during normal operation. A reset signal line is directly connected between reset terminals of the microcomputers so that the plurality of microcomputers are simultaneously reset when a reset signal is output from at least one microcomputer. Did A washing machine characterized by the following. 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 completed state. The laundry according to claim 1, wherein the received communication data is validated based on a change of the reset data received from the microcomputer from the reset processing state to the reset processing completed state. Machine. 3. The washing machine according to claim 2, wherein each microcomputer determines that an abnormality has occurred when the reset data received during normal operation is in a reset processing state. 4. The washing machine according to claim 1, wherein each microcomputer executes a plurality of the following received data abnormality determination processes (1) to (3). (1) Each microcomputer transmits the same communication data twice consecutively, and determines whether or not the two received data matches, and invalidates the received data if they do not match. (2) Each microcomputer transmits the integrated value data of the communication data together with the communication data, and obtains the integrated value of the received communication data, and invalidates the received data when the value does not match the integrated value data. (3) Each microcomputer transmits exclusive OR data of the communication data together with the communication data,
An exclusive OR of the received communication data is obtained, and when the exclusive data does not match the exclusive OR data, the received data is invalidated. 5. The microcomputer according to claim 1, wherein when the abnormality of the received data is repeated a predetermined number of times, the microcomputer determines that an abnormality has occurred in the microcomputer on the transmission side and outputs a reset signal. The washing machine according to claim 4, wherein 6. A communication control signal is communicated together with communication data, and the microcomputer on the receiving side of the communication control signal communicates when there is no change in the communication control signal for a predetermined time. The washing machine according to any one of claims 1 to 5, 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 inhibited until the washing machine motor stops. Washing machine. 8. The microcomputer according to claim 1, wherein each of the plurality of microcomputers has unique data indicating a type of the microcomputer, and output of unique data of each microcomputer is enabled. The washing machine according to any one of the above.