CN115951205A - Fault detection method and device of relay module and storage medium - Google Patents

Abstract

The application provides a fault detection method, a device and a storage medium of a relay module, the method is applied to a controller in the fault detection device, the fault detection device also comprises a testing device, the testing device is connected with the relay module, the testing device is connected with the controller, and an operation state testing program is installed in the controller, the method comprises the following steps: receiving a system running state test instruction sent by a test device, and running a running state test program based on the system running state test instruction; receiving an operation result corresponding to the relay module sent by the testing device; and judging whether the relay module breaks down or not based on the operation result. This application passes through the automatic running state test program of system running state test instruction that the controller sent according to testing arrangement to control testing arrangement and detect the relay module, judge whether the relay module breaks down according to the operation result of relay module again, and then make the reliability of relay module obtain the guarantee.

Description

Fault detection method and device of relay module and storage medium

Technical Field

The application relates to the technical field of detection equipment, in particular to a fault detection method and device of a relay module and a storage medium.

Background

With the development of science and technology, the application of the relay module in the field of electrical control is more and more extensive.

The relay module integrates a single low-power relay in the electric control cabinet, so that intermediate wiring links are reduced, and the performance of a product is improved. And can be designed according to different numerical control systems, and can be more suitable for the requirements of modern electrical control.

At present, the detection method of the relay module in the traditional technology is manual detection, a worker needs to use a universal meter to measure each point position of the relay module, and the detection result of the relay module is inaccurate due to the fact that operation is not standard during manual detection. Therefore, the reliability of the relay module is not guaranteed.

Disclosure of Invention

The application provides a fault detection method and device of a relay module and a storage medium, wherein a running state test program is automatically run through a controller according to a system running state test instruction sent by a test device, so that the test device is controlled to detect the relay module, and whether the relay module breaks down or not is judged according to a running result of the relay module. The problem of operation irregularity when having avoided artifical the detection has improved the accuracy to the testing result of relay module, and then makes the reliability of relay module obtain the guarantee.

In a first aspect of the present application, a fault detection method for a relay module is provided, and is applied to a controller in a fault detection device for the relay module, where the fault detection device for the relay module further includes a testing device, the testing device is connected with the relay module, the testing device is connected with the controller, and an operating state testing program is installed in the controller, and the method includes:

receiving a system running state test instruction sent by the test device, and running the running state test program based on the system running state test instruction;

receiving an operation result corresponding to the relay module sent by the testing device;

and judging whether the relay module breaks down or not based on the operation result.

By adopting the technical scheme, the running state test program is installed in the controller, and after the system running state test instruction sent by the test device is received, the controller automatically runs the running state test program, so that the test device is controlled to detect the relay module, and the relay module generates a corresponding running result; the controller judges whether the relay module breaks down according to the operation result. Above-mentioned testing process has realized automated inspection, operates the problem of irregularity when having avoided artifical measuring, has improved the accuracy to the testing result of relay module, and then makes the reliability of relay module obtain the guarantee.

Optionally, the running state testing program running based on the system running state testing instruction includes:

sending a first electric signal to the testing device so that the testing device sends the first electric signal to the relay module;

receiving a second electric signal sent by the testing device, wherein the second electric signal is generated after the first electric signal flows through the relay module;

the judging whether the relay module breaks down based on the operation result includes:

if the operation result indicates that the first electric signal is consistent with the second electric signal, determining that the relay module is not in fault;

and if the operation result indicates that the first electric signal is inconsistent with the second electric signal, determining that the relay module has a fault, and generating a first fault result.

By adopting the technical scheme, the first electric signal is sent to the testing device, so that the testing device can conveniently send the first electric signal to the relay module; the first electric signal generates a second electric signal after flowing through the relay module, and then the testing device receives the second electric signal and sends the second electric signal to the controller; the controller compares whether the first electric signal and the second electric signal are consistent, and when the first electric signal and the second electric signal are consistent, the controller determines that the relay module is not in fault; when the first electric signal is inconsistent with the second electric signal, the controller determines that the relay module has a fault and generates a first fault result. Whether the relay module breaks down is judged by comparing whether the electric signal flowing through the relay module changes or not so as to actively detect whether the relay module breaks down or not, thereby saving detection time and further ensuring the reliability of the relay module.

Optionally, if the operation result sent by the testing device is not received within a preset first time period, it is determined that the relay module fails.

By adopting the technical scheme, if the controller does not receive the operation result sent by the testing device within the preset first time period, the relay module is determined to be in fault, and the method and the device have the effects of convenience and quickness.

Optionally, a first measurement signal is sent to the relay module;

receiving a second measuring signal sent by the relay module, wherein the second measuring signal is a measuring signal generated after the first measuring signal flows through the relay module;

and comparing the first measurement signal with the second measurement signal, if the first measurement signal is inconsistent with the second measurement signal, determining that the relay module has a fault, and generating a second fault result.

By adopting the technical scheme, the controller primarily determines that the relay module is not in fault, and sends a first measuring signal to the relay module, and the first measuring signal generates a second measuring signal after flowing through the relay module; and then, the testing device receives a second measuring signal and sends the second measuring signal to the controller, the controller determines that the relay module fails and generates a second failure result by comparing whether the first measuring signal and the second measuring signal are consistent or not and when the first measuring signal and the second measuring signal are inconsistent. Whether the first measuring signal and the second measuring signal are consistent or not is compared, so that the controller can accurately judge the specific fault information of the relay module, and the reliability of the relay module is further guaranteed.

Optionally, the fault detection device of the relay module further includes a display device, the display device is connected to the controller, and the method further includes, after determining whether the relay module has a fault based on the operation result:

and sending the first fault result and the second fault result to the display device so that the display device displays the first fault result and the second fault result.

Through adopting above-mentioned technical scheme, the controller will send first trouble result and second trouble result to display device according to relay module's first trouble result and second trouble result after, and the staff of being convenient for clearly understands relay module's the trouble condition directly perceivedly to the staff of being convenient for takes corresponding measure.

Optionally, determining first model information of the relay module according to the first fault result and the second fault result;

if the first model information does not exist in the preset database, the relay module corresponding to the first model information is sent to the testing device, so that the testing device rechecks the relay module, and the preset database stores the corresponding relation between the model information and the relay module.

By adopting the technical scheme, when the relay module breaks down, the controller determines the model information of the corresponding relay module according to the first fault result and the second fault result; next, the controller searches whether the model information exists in a preset database, so as to judge whether the relay module corresponding to the model information is a primary fault; if the model information does not exist in the preset database, the relay module corresponding to the model information is determined to be in the first fault state, and the relay module is rechecked, so that whether the relay module breaks down or not is further determined, and the detection accuracy is improved.

Optionally, the first fault result includes that at least one relay in the relay module is broken, and the second fault result includes that multiple points of the relay in the relay module are connected with tin and/or are in error connection.

Through adopting above-mentioned technical scheme, first fault result includes that at least one relay in the relay module opens circuit, and second fault result includes that a plurality of position of relay in the relay module link tin and/or misconnection, through categorised to the different fault conditions of relay module, the staff of being convenient for takes corresponding measure according to the fault condition of difference to the detection accuracy of relay module has further been ensured.

In a second aspect of the present application, there is provided a fault detection device of a relay module, which includes a controller and a test device, wherein,

the testing device is connected with the relay module, the testing device is connected with the controller, and the testing device is used for sending a system running state testing instruction to the controller; the controller is connected with the testing device,

the controller is used for receiving a system running state test instruction sent by the test device and running the running state test program based on the system running state test instruction;

the controller is also used for receiving the operation result corresponding to the relay module sent by the testing device;

and the controller is also used for judging whether the relay module breaks down or not based on the operation result.

Optionally, the fault detection device of the relay module further includes a display device, the display device is connected to the controller, and the display device is configured to display the first fault result and the second fault result sent by the controller.

In a third aspect of the present application, there is provided a computer-readable storage medium having stored thereon instructions which, when executed, perform a method as in any one of the above methods.

In summary, the present application includes at least one of the following beneficial technical effects:

1. according to the method and the device, the controller automatically operates the operation state test program according to the system operation state test instruction sent by the test device, so that the test device is controlled to detect the relay module, and whether the relay module breaks down or not is judged according to the operation result of the relay module. The problem of irregular operation during manual detection is avoided, the accuracy of the detection result of the relay module is improved, and the reliability of the relay module is further guaranteed;

2. when the relay module breaks down, the controller determines the model information of the corresponding relay module according to the first fault result and the second fault result; next, the controller searches whether the model information exists in a preset database, so as to judge whether the relay module corresponding to the model information is a primary fault; if the model information does not exist in the preset database, the relay module corresponding to the model information is determined to be in the first fault state, and the relay module is rechecked, so that whether the relay module breaks down or not is further determined, and the detection accuracy is improved.

Drawings

Fig. 1 is a schematic flowchart of a fault detection method for a relay module according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a fault detection device of a relay module according to an embodiment of the present application.

Description of reference numerals: 21. a controller; 22. a testing device; 23. a display device; 24. a relay module.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present specification, the technical solutions in the embodiments of the present specification will be clearly and completely described below with reference to the drawings in the embodiments of the present specification, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.

In the description of the embodiments of the present application, words such as "or" for example "are used to mean serving as examples, illustrations or illustrations. Any embodiment or design described herein as "for example" or "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "such as" or "for example" is intended to present related concepts in a concrete fashion.

In the description of the embodiments of the present application, the term "and/or" is only one kind of association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, B exists alone, and A and B exist at the same time. In addition, the term "plurality" means two or more unless otherwise specified. For example, a plurality of relays refers to two or more relays, and a plurality of points refers to two or more points. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit indication of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless otherwise specifically stated.

Before describing the embodiments of the present application, some terms referred to in the embodiments of the present application are defined and described.

The relay module: the relay module comprises a terminal block and a plurality of relays, wherein the terminal block is used for wiring, and the relays are automatic switch elements with an isolation function. The PLC (Programmable Logic Controller) can directly control the coil of the relay module, and the angle contact of the relay module controls the load, so that the aim of controlling strong current by weak current is fulfilled. The size of the relay module is small, the relay module only occupies 1/2 of the size of the small intermediate relay, and the contact current is larger than that of the small intermediate relay.

The application provides a fault detection method of a relay module, refer to fig. 1, be applied to controller 21 among the fault detection device of relay module, the fault detection device of relay module still includes testing arrangement 22, testing arrangement 22 is connected with relay module 24, testing arrangement 22 is connected with controller 21, install running state test program in the controller 21, the fault detection method of relay module includes step S110 to step S130, above-mentioned step is as follows:

s110, receiving a system operation state test instruction sent by the test device 22, and executing an operation state test program based on the system operation state test instruction.

Specifically, after receiving the system operation state test instruction sent by the test apparatus 22, the controller 21 executes the operation state test program according to the system operation state test instruction. The testing device 22 is a testing fixture manufactured according to the type of the terminal block of the relay module 24, and when the testing fixture is in front of testing the relay module 24, a system running state testing instruction is sent to the controller 21, so that the controller 21 runs a running state testing program. The controller 21 is a PLC controller.

And S120, receiving the operation result corresponding to the relay module 24 sent by the testing device 22.

Specifically, when the controller 21 starts to run the operation state test program, the test device 22 is controlled to start to detect the relay module 24, and the relay module 24 generates a corresponding operation result. The operation result is generated by the relay module 24 body, and the operation detection process does not need the participation of workers, so that the labor and the time are saved, and the detection efficiency is convenient to improve. The normal operation means that there is no open circuit error reporting in the relay module 24. When the relay module 24 generates the operation result, the operation result is first sent to the testing device 22, and the testing device 22 receives the operation result and then sends the operation result to the controller 21. The operation state test program includes: the controller 21 sends a first electrical signal to the testing device 22, and the testing device 22 receives the first electrical signal and forwards the first electrical signal to the relay module 24, so that the first electrical signal generates a second electrical signal after passing through the relay module 24; the test device 22 receives the second electrical signal and sends the second electrical signal to the controller 21.

And S130, judging whether the relay module 24 has a fault or not based on the operation result.

Specifically, the controller 21 determines whether the relay module 24 fails according to the operation result, that is, the controller 21 determines whether the relay module 24 fails according to whether the first electrical signal and the second electrical signal are consistent. If the first electrical signal is consistent with the second electrical signal, the controller 21 determines that the relay module 24 is not in fault; if the first electrical signal is not consistent with the second electrical signal, the controller 21 determines that the relay module 24 is faulty and generates a first fault result. In this embodiment, the first electrical signal is different from the second electrical signal: after the controller 21 sends the first electric signal, the second electric signal is not received, that is, the relay module 24 fails. Further, the first fault result may include at least one relay in the relay module 24 being open, and the relay module 24 may generate the first fault result when the at least one relay in the relay module 24 is open.

In a possible embodiment, it takes a certain time for the testing device 22 to detect the relay module 24, and when the controller 21 does not receive the operation result sent by the testing device 22 after the preset first time period elapses, that is, after the controller 21 sends the first electric signal, the controller 21 does not receive the second electric signal, and then the controller 21 determines that the relay module 24 is disconnected. For example, the test device 22 needs 5 seconds to detect the 8-bit relay module, and after the controller 21 sends a 24V electrical signal to the test device 22, the test device 22 forwards the 24V electrical signal to the relay module 24; after the 24V electrical signal flows through the relay module 24, within a preset time of 10 seconds, the testing device 22 does not receive a subsequent electrical signal of the relay module 24, that is, the controller 21 does not receive a subsequent electrical signal of the relay module 24, and then the controller 21 determines that the relay module 24 is open.

In a possible embodiment, after the controller 21 determines that the relay module 24 is not faulty, the method specifically further includes: the controller 21 sends a first measurement signal to the relay module 24; the controller 21 receives a second measurement signal sent by the relay module 24, wherein the second measurement signal is a measurement signal generated after the first measurement signal flows through the relay module 24; the controller 21 compares the first measurement signal with the second measurement signal, and if the first measurement signal is inconsistent with the second measurement signal, the controller 21 determines that the relay module 24 has failed and generates a second failure result.

Specifically, after it is determined for the first time that the relay module 24 is not in fault, the controller 21 will send a first measurement signal to the testing device 22; the testing device 22 receives the first measuring signal and then sends the first measuring signal to the relay module 24, the first measuring signal generates a second measuring signal after flowing through the relay module 24, the testing device 22 receives the second measuring signal and forwards the second measuring signal to the controller 21, and the controller 21 judges whether the relay module 24 breaks down or not by comparing whether the first measuring signal and the second measuring signal are consistent or not.

For example, if the relay module 24 is an 8-bit relay module, the first measurement signal sent by the controller 21 to the 8-bit relay module includes 8 first measurement sub-signals "a, b, c, d, e, f, g, h", the 8 first measurement sub-signals respectively measure 8 point locations of the 8-bit relay module in sequence, and the controller 21 sends a corresponding first measurement sub-signal to each relay point location separately every 0.1 second; after a period of time, if the controller 21 receives the second measurement signal of "a, bc, d, e, f, g, h", the controller 21 identifies that the second point position and the third point position of the 8-bit relay module are connected with tin; if the controller 21 receives the second measurement signal of "a, be, c, d, f, g, h", the controller 21 recognizes that the second point position and the fifth point position of the 8-bit relay module are connected with tin; if the controller 21 receives the second measurement signal "a, b, c, e, d, f, g, h", the controller 21 recognizes that the fourth point and the fifth point of the 8-bit relay module are in error connection. Therefore, the controller 21 can identify the occurrence of tin connection and/or misconnection faults of the relay module 24, so that the reliability of the quality of the relay module 24 is ensured.

In a possible embodiment, the failure detection device of the relay module further includes a display device 23, the display device 23 is connected to the controller 21, and after determining whether the relay module 24 has a failure based on the operation result, the method further includes: the first failure result and the second failure result are transmitted to the display device 23 so that the display device 23 displays the first failure result and the second failure result.

Specifically, the display device 23 is connected to the controller 21, and after receiving the first failure result and the second failure result sent by the controller 21, the display device 23 will display the first failure result and the second failure result on the screen of the display device 23. Among them, the display device 23 includes but is not limited to: android (Android) system devices, mobile operating system (iOS) devices developed by apple inc, personal Computers (PCs), world Wide Web (Web) devices, virtual Reality (VR) devices, augmented Reality (AR) devices, and other electronic devices with screens. For example, when the display device 23 is a personal computer, the personal computer may display a word that the first failure result is "point-to-point disconnection of the 8-bit relay module", and may also display a word that the second failure result is "tin connection occurs at the second point and the fifth point of the 8-bit relay module", and the specific display content is set according to specific situations, which is not described herein again.

In one possible embodiment, the controller 21 determines the first model information of the relay module 24 according to the first failure result and the second failure result; if the first model information does not exist in the preset database, the controller 21 sends the relay module 24 corresponding to the first model information to the testing device 22, so that the testing device 22 rechecks the relay module 24, and the preset database stores the corresponding relation between the model information and the relay module 24.

Specifically, the controller 21 determines the model information of the relay module 24 according to the first fault result and the second fault result, and if the model information does not exist in the preset database, the controller 21 determines that the relay module 24 is the first fault. Next, the controller 21 sends the initially failed relay module 24 to the testing device 22 according to the corresponding relationship between the model information stored in the preset database and the relay module 24, so that the testing device 22 rechecks the relay module 24, and the accuracy of detection is improved.

The present application also provides a fault detection apparatus of a relay module, referring to fig. 2, the fault detection apparatus of the relay module includes a controller 21 and a testing apparatus 22, wherein,

the testing device 22 is connected with the relay module 24, the testing device 22 is connected with the controller 21, and the testing device 22 is used for sending a system running state testing instruction to the controller 21; the controller 21 is connected with the testing device 22, and the controller 21 is used for receiving a system running state testing instruction sent by the testing device 22 and running a running state testing program based on the system running state testing instruction; the controller 21 is further configured to receive an operation result, sent by the testing device 22, corresponding to the relay module 24; and the controller 21 is also used for judging whether the relay module 24 has a fault or not based on the operation result.

In one possible embodiment, the controller 21 executes the operation state test program based on the system operation state test instruction, including: the controller 21 sends a first electrical signal to the testing device 22, so that the testing device 22 sends the first electrical signal to the relay module 24; the controller 21 receives a second electrical signal sent by the testing device 22, wherein the second electrical signal is an electrical signal generated after the first electrical signal flows through the relay module 24; the controller 21 judges whether the relay module 24 malfunctions based on the operation result, including: if the operation result indicates that the first electrical signal is consistent with the second electrical signal, the controller 21 determines that the relay module 24 is not in fault; if the operation result indicates that the first electrical signal is inconsistent with the second electrical signal, the controller 21 determines that the relay module 24 is out of order and generates a first failure result.

In a possible embodiment, if the controller 21 does not receive the operation result sent by the testing device 22 within a preset first time period, the controller 21 determines that the relay module 24 is out of order.

In a possible embodiment, after the controller 21 determines that the relay module 24 is not faulty, the method specifically further includes: the controller 21 sends a first measurement signal to the relay module 24; the controller 21 receives a second measurement signal sent by the relay module 24, where the second measurement signal is a measurement signal generated after the first measurement signal flows through the relay module 24; the controller 21 compares the first measurement signal with the second measurement signal, and if the first measurement signal is inconsistent with the second measurement signal, the controller 21 determines that the relay module 24 has failed and generates a second failure result.

In a possible embodiment, the failure detection device of the relay module further includes a display device 23, the display device 23 is connected to the controller 21, and after the controller 21 determines whether the relay module 24 fails based on the operation result, the method further includes: the controller 21 transmits the first failure result and the second failure result to the display device 23 to cause the display device 23 to display the first failure result and the second failure result.

In one possible embodiment, the controller 21 determines the first model information of the relay module 24 according to the first failure result and the second failure result; if the first model information does not exist in the preset database, the controller 21 sends the relay module 24 corresponding to the first model information to the testing device 22, so that the testing device 22 rechecks the relay module 24, and the preset database stores the corresponding relation between the model information and the relay module 24.

In one possible embodiment, the first fault result includes an open circuit of at least one relay in the relay module 24, and the second fault result includes a plurality of point-to-point and/or misconnection of relays in the relay module 24.

In a possible implementation manner, the fault detection device of the relay module further includes an alarm device, the alarm device is connected to the controller 21, and the alarm device is used for alarming the first fault result and the second fault result; the alarm device can be a horn or a buzzer, and the specific type is set according to specific conditions, which are not described herein again.

It should be noted that: in the device provided in the foregoing embodiment, when the functions of the device are implemented, only the division of each functional module is illustrated, and in practical applications, the functions may be distributed by different functional modules as needed, that is, the internal structure of the device may be divided into different functional modules to implement all or part of the functions described above. In addition, the apparatus and method embodiments provided by the above embodiments belong to the same concept, and specific implementation processes thereof are described in the method embodiments for details, which are not described herein again.

The application also provides a computer readable storage medium, which stores instructions that, when executed, perform any one of the above-mentioned relay module fault detection methods.

It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present application is not limited by the order of acts described, as some steps may occur in other orders or concurrently depending on the application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required for this application.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other ways. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed coupling or direct coupling or communication connection between each other may be through some service interfaces, indirect coupling or communication connection of devices or units, and may be electrical or in other forms.

Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit may be implemented in the form of hardware, or may also be implemented in the form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable memory. Based on such understanding, the technical solutions of the present application, which are essential or part of the technical solutions contributing to the prior art, or all or part of the technical solutions, may be embodied in the form of a software product, which is stored in a memory and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods of the embodiments of the present application. And the aforementioned memory comprises: various media that can store program codes, such as a U disk, a removable hard disk, a magnetic disk, or an optical disk.

The above description is only an exemplary embodiment of the present disclosure, and the scope of the present disclosure should not be limited thereby. It is intended that all equivalent variations and modifications made in accordance with the teachings of the present disclosure be covered thereby. Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims (10)

1. The fault detection method of the relay module is characterized by being applied to a controller (21) in a fault detection device of the relay module, the fault detection device of the relay module further comprises a testing device (22), the testing device (22) is connected with a relay module (24), the testing device (22) is connected with the controller (21), and an operating state testing program is installed in the controller (21), and the method comprises the following steps:

receiving a system running state test instruction sent by the test device (22), and running the running state test program based on the system running state test instruction;

receiving an operation result corresponding to the relay module (24) sent by the testing device (22);

and judging whether the relay module (24) breaks down or not based on the operation result.

2. The method for detecting the fault of the relay module according to claim 1, wherein the step of executing the operation state test program based on the system operation state test instruction comprises:

sending a first electrical signal to the testing device (22) to cause the testing device (22) to send the first electrical signal to the relay module (24);

receiving a second electric signal sent by the testing device (22), wherein the second electric signal is generated after the first electric signal flows through the relay module (24);

the judging whether the relay module (24) breaks down based on the operation result includes:

if the operation result indicates that the first electrical signal is consistent with the second electrical signal, determining that the relay module (24) is not in fault;

and if the operation result indicates that the first electric signal is inconsistent with the second electric signal, determining that the relay module (24) has a fault, and generating a first fault result.

3. The method for fault detection of a relay module according to claim 1, further comprising:

and if the operation result sent by the testing device (22) is not received within a preset first time period, determining that the relay module (24) breaks down.

4. The fault detection method of a relay module according to claim 2, wherein after determining that the relay module (24) is not faulty, the method further comprises:

sending a first measurement signal to the relay module (24);

receiving a second measurement signal sent by the relay module (24), wherein the second measurement signal is a measurement signal generated after the first measurement signal flows through the relay module (24);

and comparing the first measurement signal with the second measurement signal, if the first measurement signal is inconsistent with the second measurement signal, determining that the relay module (24) has a fault, and generating a second fault result.

5. The method for detecting the fault of the relay module according to claim 4, wherein the fault detection device of the relay module further comprises a display device (23), the display device (23) is connected with the controller (21), and after determining whether the relay module (24) has the fault based on the operation result, the method further comprises:

sending the first failure result and the second failure result to the display device (23) so as to enable the display device (23) to display the first failure result and the second failure result.

6. The method for fault detection of a relay module according to claim 5, comprising:

determining first model information of the relay module (24) according to the first fault result and the second fault result;

if the first model information does not exist in the preset database, the relay module (24) corresponding to the first model information is sent to the testing device (22) so that the testing device (22) rechecks the relay module (24), and the preset database stores the corresponding relation between the model information and the relay module (24).

7. The method for fault detection of a relay module according to claim 5, wherein the first fault result comprises an open circuit of at least one relay in the relay module (24) and the second fault result comprises a plurality of point-to-point and/or misconnections of relays in the relay module (24).

8. A fault detection device of a relay module is characterized by comprising a controller (21) and a test device (22),

the testing device (22) is connected with the relay module (24), the testing device (22) is connected with the controller (21), and the testing device (22) is used for sending a system running state testing instruction to the controller (21); the controller (21) is connected to the test device (22),

the controller (21) is used for receiving a system running state test instruction sent by the test device (22) and running the running state test program based on the system running state test instruction;

the controller (21) is further used for receiving an operation result, sent by the testing device (22), corresponding to the relay module (24);

the controller (21) is further used for judging whether the relay module (24) breaks down or not based on the operation result.

9. The failure detection device of the relay module according to claim 8, further comprising a display device (23), wherein the display device (23) is connected to the controller (21), and the display device (23) is configured to display the first failure result and the second failure result sent by the controller (21).

10. A computer-readable storage medium storing instructions that, when executed, perform the method of any of claims 1-7.

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