WO2022267233A1

WO2022267233A1 - Communication fault detection method, device and system based on redundant device

Info

Publication number: WO2022267233A1
Application number: PCT/CN2021/117690
Authority: WO
Inventors: 朱杰; 方珂琦; 张则立; 江竹轩
Original assignee: 浙江中控技术股份有限公司
Priority date: 2021-06-23
Filing date: 2021-09-10
Publication date: 2022-12-29
Also published as: CN113542057B; CN113542057A

Abstract

A communication fault detection method, device and system based on a redundant device. The communication fault detection method based on a redundant device comprises: when an information sending instruction is acquired, packaging the current sampling data and communication state to obtain a communication data packet; within one communication cycle, sending the communication data packet to a receiver multiple times, and starting the timing of a response cycle; and within the response cycle, determining the communication state of the communication data packet in the next communication cycle according to whether response data from the receiver can be received.

Description

Communication fault detection method, device and system based on redundant equipment

related application

This application claims the priority of the Chinese patent application filed on June 23, 2021 with the application number 202110700714.3 and the title of the invention is "Communication Fault Detection Method, Device and System Based on Redundant Devices", the entire contents of which are hereby incorporated by reference In this application.

technical field

The present application relates to the technical field of industrial automatic control, in particular to a communication fault detection method, device and system based on redundant equipment.

Background technique

The automated safety instrumentation system (Safety Instrumentation System, referred to as SIS) can promptly respond to and protect the possible dangers of the production equipment and equipment of the enterprise, or the continued deterioration of the production equipment and equipment due to improper behavior, so that the production equipment and equipment enter a Pre-defined safe shutdown conditions reduce risks to an acceptable minimum and ensure the safety of personnel, equipment and production units. For the sake of system safety and reliability, some key components or functional equipment will be artificially reconfigured. When the system fails, such as a certain equipment is damaged, the redundantly configured components can be used as backup. Intervene in time and take over the work of the failed component, thereby reducing the downtime of the system.

In related technologies, redundant devices communicate with upstream and downstream associated devices to implement data transmission. In the case of a communication failure, it takes several communication cycles to confirm the communication failure, and the communication cycle between different devices is long, resulting in the risk time of the safety instrumented system being prolonged due to communication reasons , affecting the operation of each device.

At present, in the related art, when a communication failure occurs, it takes a long time to confirm the communication failure, thereby affecting the operation of each device, and no effective solution has been proposed.

Contents of the invention

The embodiment of the present application provides a communication failure detection method, equipment, system, electronic device, and storage medium based on redundant equipment, so as to at least solve the problem that it takes a long time to confirm the communication in the case of a communication failure in the related art. Faults that affect the operation of each device.

In the first aspect, the embodiment of the present application provides a communication failure detection method based on redundant equipment, which is applied to the sender, including:

When the information sending instruction is obtained, the current sampling data and communication status are packaged to obtain a communication data packet;

In a communication cycle, the communication data packet is sent to the receiver multiple times, and the timing of the response cycle is started;

In the response period, according to whether the receiver's response data can be received, the communication status of the communication data packet in the next communication period is determined.

In some of these embodiments, within one communication cycle, sending the communication data packet to the recipient multiple times includes:

Obtaining initial sampling data, calculating the initial sampling data through various verification algorithms, and obtaining multiple different communication sampling data after calculation;

Packing the plurality of different communication sampling data, the initial sampling data and the communication state to obtain the communication data packet;

In the communication period, the communication data packet is sent to the receiver multiple times.

In some of these embodiments, obtaining the information sending instruction includes one of the following:

If the change of the sampled data meets the preset information sending condition, acquire the information sending instruction;

If none of the changes in the sampled data within the preset sending period meet the preset information sending condition, the information sending instruction is acquired at the end of the sending period.

In some of these embodiments, when the information transmission instruction is obtained, the current sampling data and communication status are packaged, and the communication data package obtained further includes:

Obtain an internal fault diagnosis result, pack the internal fault diagnosis result, the sampling data, and the communication status to obtain a communication data packet.

In some of these embodiments, the determining the communication status of the communication data packet in the next communication cycle according to whether the receiver’s response data can be received within the response cycle includes:

In the response period, if the response data of the receiver is received, the communication status of the communication data packet in the next communication period is normal, and the timing of the response period is stopped;

In the response period, if no response data from the receiver is received, the communication status of the communication data packet in the next communication period is abnormal.

In the second aspect, the embodiment of the present application provides a communication failure detection method based on redundant equipment, which is applied to the receiver, including:

Within a communication cycle, receiving multiple communication data packets from the same sender, wherein the communication data packets include the current sampling data and the communication status of the sender;

Performing a communication check on the sampled data according to a communication protocol, and performing an integrity check on the sampled data according to a data identifier in the sampled data;

According to the results of the communication check and the integrity check, it is judged whether to generate response data, and if the response data is generated, within the preset response period, the response data is sent to all the sending square.

In some of these embodiments, after the communication verification is performed on the sampled data according to the communication protocol, and the integrity verification is performed on the sampled data according to the data identifier in the sampled data, the method further includes:

screening multiple communication data packets according to the data packet identification of each of the communication data packets;

According to the timing of the receiving cycle corresponding to the sender, and the communication status, select the target communication data packet from the communication data packets that have passed the screening;

Process the data in the target communication packet.

In some of these embodiments, the selection of the target communication data packet from the communication data packets that pass the screening according to the timing of the receiving cycle corresponding to the sender and the communication state includes one of the following:

When the timing of the receiving cycle corresponding to the sender has not timed out, and the communication status in the communication data packet is normal, select the communication data packet sent by the sender in the current communication cycle in the previous communication cycle as The target communication data packet;

When the timing of the receiving cycle corresponding to the sender has timed out, or the communication state in the communication data packet is abnormal, select an alternate sender different from the sender in the previous communication cycle to be in the current communication cycle The sent communication data packet is used as the target communication data packet, wherein the communication status of the standby sender is normal;

When the timing of all receiving periods corresponding to the sender has timed out and the communication status in the communication data packet is abnormal, a preset fail-safe value is obtained to form the target communication data packet.

In the third aspect, the embodiment of the present application provides a communication failure detection method based on redundant equipment, which is applied to multiple senders and a receiver, including:

Each of the senders packs the current sampling data and communication status to obtain a communication data packet when the information sending instruction is obtained;

Each of the senders sends the communication data packets to the receiver multiple times within one communication cycle, and starts the timing of the response cycle;

The receiver receives a plurality of communication data packets from each of the senders within one communication cycle;

The receiver performs communication verification on the sampled data according to the communication protocol, and performs integrity verification on the sampled data according to the data identifier in the sampled data; according to the communication verification and the integrity verification judge whether to generate response data according to the results, and if the response data is generated, send the response data to all the senders within the preset response period;

Each of the senders determines the communication status of the communication data packet in the next communication cycle according to whether the sender can receive the response data from the receiver within the response cycle.

In the fourth aspect, the embodiment of the present application provides a communication fault detection device based on redundant equipment, including a packaging module, a sending module and a response module:

The packing module is used to pack the current sampling data and communication status to obtain a communication data packet when the information sending instruction is obtained;

The sending module is used to send the communication data packet to the receiver multiple times within one communication cycle, and start the timing of the response cycle;

The response module is configured to determine the communication status of the communication data packet in the next communication cycle according to whether the receiver's response data can be received within the response cycle.

In the fifth aspect, the embodiment of the present application provides a communication fault detection device based on redundant equipment, including a receiving module, a verification module and a feedback module:

The receiving module is configured to receive multiple communication data packets from the same sender within one communication cycle, wherein the communication data packets include current sampling data and the communication status of the sender;

The verification module is configured to perform communication verification on the sampled data according to a communication protocol, and perform integrity verification on the sampled data according to a data identifier in the sampled data;

The feedback module is configured to judge whether to generate response data according to the results of the communication check and the integrity check, and if the response data is generated, within a preset response period, send the response to Data is sent to all said senders.

In the sixth aspect, the embodiment of the present application provides a communication fault detection system based on redundant equipment, including multiple senders and a receiver:

The receiver receives a plurality of communication data packets from each of the senders within one communication period;

In a seventh aspect, the embodiment of the present application provides an electronic device, including a memory, a processor, and a computer program stored in the memory and operable on the processor, when the processor executes the computer program Realize the communication failure detection method based on redundant equipment as described in any one of the first to third aspects above.

In the eighth aspect, the embodiment of the present application provides a storage medium on which a computer program is stored. When the program is executed by a processor, the communication failure based on redundant equipment as described in any one of the first to third aspects above can be realized. Detection method.

Compared with related technologies, the communication failure detection method based on redundant equipment provided by the embodiment of the present application obtains the communication data packet by packaging the current sampling data and the communication state when the information transmission instruction is obtained; In the communication cycle, send the communication data packet to the receiver multiple times, and start the timing of the response cycle; in the response cycle, determine the communication status of the communication data packet in the next communication cycle according to whether the response data from the receiver can be received The invention solves the problem in the related art that it takes a long time to confirm the communication failure in the case of a communication failure, thereby affecting the operation of each device, and realizes the rapid confirmation of the communication failure.

The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below, so as to make other features, objects, and advantages of the application more comprehensible.

Description of drawings

The drawings described here are used to provide a further understanding of the application and constitute a part of the application. The schematic embodiments and descriptions of the application are used to explain the application and do not constitute an improper limitation to the application. In the attached picture:

Fig. 1 is a flow chart of a communication failure detection method based on redundant equipment according to an embodiment of the present application;

FIG. 2 is a flow chart of another communication fault detection method based on redundant equipment according to an embodiment of the present application;

FIG. 3 is a flow chart of another communication failure detection method based on redundant equipment according to an embodiment of the present application;

FIG. 4 is a flow chart of another communication failure detection method based on redundant equipment according to an embodiment of the present application;

FIG. 5 is a block diagram of a hardware structure of a terminal of a redundant device-based communication failure detection method according to an embodiment of the present application;

FIG. 6 is a structural block diagram of a communication fault detection device based on redundant devices according to an embodiment of the present application;

FIG. 7 is a structural block diagram of another communication fault detection device based on redundant devices according to an embodiment of the present application;

Fig. 8 is a structural block diagram of a communication failure detection system based on redundant equipment according to an embodiment of the present application.

detailed description

In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be described and illustrated below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application. Based on the embodiments provided in the present application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application. In addition, it can also be understood that although such development efforts may be complex and lengthy, for those of ordinary skill in the art relevant to the content disclosed in this application, the technology disclosed in this application Some design, manufacturing or production changes based on the content are just conventional technical means, and should not be understood as insufficient content disclosed in this application.

Reference in this application to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The occurrences of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is understood explicitly and implicitly by those of ordinary skill in the art that the embodiments described in this application can be combined with other embodiments without conflict.

Unless otherwise defined, the technical terms or scientific terms involved in the application shall have the usual meanings understood by those with ordinary skill in the technical field to which the application belongs. Words such as "a", "an", "an" and "the" involved in this application do not indicate a limitation on quantity, and may indicate singular or plural numbers. The terms "comprising", "comprising", "having" and any variations thereof involved in this application are intended to cover non-exclusive inclusion; for example, a process, method, system, product or process that includes a series of steps or modules (units). The apparatus is not limited to the listed steps or units, but may further include steps or units not listed, or may further include other steps or units inherent to the process, method, product or apparatus. The words "connected", "connected", "coupled" and similar words mentioned in this application are not limited to physical or mechanical connection, but may include electrical connection, no matter it is direct or indirect. "Multiple" referred to in the present application means greater than or equal to two. "And/or" describes the association relationship of associated objects, indicating that there may be three types of relationships. For example, "A and/or B" may indicate: A exists alone, A and B exist simultaneously, and B exists independently. The terms "first", "second", "third" and the like involved in this application are only used to distinguish similar objects, and do not represent a specific ordering of objects.

In the SIS system, the upstream device samples the voltage and/or current in the system, and then sends the sampled data to the downstream device through the communication connection to process the sampled data. party, and the downstream device that obtains the sampling data is the receiver. In this application, the upstream device is redundantly set, so when one sender fails, another sender can also be used to ensure that the system runs intact. During the communication process, multiple senders with redundant settings send sampling data to the receiver at the same time, and the receiver will also feed back response data to all senders after receiving the complete sampling data that meets the requirements. The sender and receiver in this application may be terminal devices or processors.

This embodiment provides a communication fault detection method based on redundant equipment, which is applied to a sender. Fig. 1 is a flow chart of a communication failure detection method based on redundant equipment according to an embodiment of the present application. As shown in Fig. 1, the method includes the following steps:

Step S110, if the information sending instruction is obtained, pack the current sampling data and communication status to obtain a communication data packet.

In this embodiment, the sender starts the communication process with the receiver after obtaining the information sending instruction, wherein the information sending instruction can be generated internally by the sender or triggered externally. The current sampling data is the current value and/or voltage value of the current system. In this embodiment, the sampling data will be packaged together with the current communication status, wherein the communication status indicates whether the sender and the receiver can communicate normally, including normal and abnormal states. The current communication state is obtained from the interaction between the sender and receiver in the previous communication cycle. Furthermore, if the current communication is the initial communication, the initialization value of the communication state is abnormal by default, so as to ensure the safe operation of the system.

Step S120, within a communication cycle, send the communication data packets to the receiver multiple times, and start timing the response cycle.

In this embodiment, in order to be able to confirm in time whether there is a communication failure in the system, within a communication cycle, the sender will send communication data packets to the receiver multiple times in a row, so as long as there is one communication data packet that can be responded by the receiver, It means that the communication is normal. If multiple communication data packets cannot be responded by the receiver, it means that the communication between the sender and the receiver is faulty.

Step S130, in the response period, according to whether the receiver's response data can be received, determine the communication status of the communication data packet in the next communication period.

In this embodiment, the response period is set. Considering the bandwidth and stability of the communication network, the duration of the response period may be greater than or equal to the duration of the communication period, so as to avoid misjudgment of communication failures.

Through the above steps S110 to S130, the sender in this embodiment sends communication data packets to the receiver multiple times within one communication cycle, and then judges the relationship between the two according to whether the receiver returns response data within the response cycle. The communication state avoids the need for multiple communication cycles to confirm the communication fault in the related technology, saves the time for confirming the communication fault, thus solves the problem that in the related technology, it takes a long time to confirm the communication fault in the case of a communication fault , thus affecting the operation of each device, realizing the rapid confirmation of communication failures.

Further, within the response cycle, if the sender receives the response data from the receiver, it means that the receiver has received at least one correct and complete communication data packet from the sender, and the communication status of the communication data packet in the next communication cycle It is normal, and stop the timing of the response cycle to avoid misjudgment of communication failures caused by the timeout of the response cycle; within the response cycle, if the sender does not receive the response data from the receiver, it means that multiple communication data packets sent by the sender If none of them are correctly received by the receiver, then the communication status of the communication data packet in the next communication cycle is abnormal. In this embodiment, whether there is a communication fault can be directly judged according to whether the response data is received within the response period, without multiple rounds of communication confirmation, which saves the judgment time of the communication fault and improves the diagnosis efficiency of the communication fault.

In other embodiments, the communication fault location and repair may be performed immediately when the communication state is abnormal, or the communication fault location and repair may be performed when multiple consecutive communication states are abnormal.

This embodiment provides another communication fault detection method based on redundant equipment. Fig. 2 is a flowchart of another communication failure detection method based on redundant equipment according to an embodiment of the present application. As shown in Fig. 2, the method further includes the following steps:

In step S210, the initial sampled data is obtained, and the initial sampled data is calculated by using various verification algorithms, and multiple pieces of different communication sampled data are obtained after the calculation.

In this embodiment, after the sender obtains the information sending instruction, it does not directly pack the initial sampled data, but first calculates the initial sampled data through different verification algorithms, for example, reverses the initial sampled data , or directly use the Cyclic Redundancy Check (CRC) algorithm to calculate the initial sampling data, and then obtain multiple different communication sampling data to ensure the integrity of the sampling data during communication transmission.

In step S220, multiple pieces of different communication sampling data, initial sampling data and communication status are packaged to obtain a communication data packet.

In order to enable the receiver to verify different received sampling data, in the process of packaging communication data packets, it is necessary to package both the calculated communication sampling data and the initial sampling data. For example, in the case of using the CRC algorithm, a check code will be added after the sampling data calculated by the CRC algorithm. The check code is calculated based on the initial sampling data. After the receiver receives the communication sampling data of the communication data packet, Whether the received data is complete can be judged according to the check code, and the communication sampling data and the initial sampling data can also be judged by the check code to confirm whether there is a failure in the transmission process.

Step S230, within the communication period, send the communication data packets to the receiver for multiple times.

Each sender will send multi-packet communication data packets to the receiver, and the verification algorithm may be the same or different between each sender.

Through the above steps S210 to S230, in this embodiment, the initial sampling data is calculated as different communication sampling data through a variety of different verification algorithms, and then the communication sampling data is packaged and transmitted together with the initial sampling data and communication status. The integrity of the initially sampled data can be verified more efficiently.

In some of these embodiments, the sender obtains the information sending instruction including two situations:

One is to obtain an information sending instruction if the change of the sampled data meets the preset information sending condition. Among them, the preset information sending condition is used to judge whether the change of the sampled data needs to be transmitted to the receiving party for processing. Specifically, the sampled data includes the switching value and the analog value, and whether the change of the switching value satisfies the preset information sending condition, according to Whether the change of the switching value realizes the jump judgment of on/off, whether the change of the analog value meets the preset information sending conditions, judge according to the threshold value, which can be set according to the safety accuracy, usually set to 1 of the full scale %. Therefore, in this embodiment, if the sampled data is a switching value and the change of the switching value makes the circuit jump between on/off, or the sampled data is an analog value and the change of the analog value is greater than the threshold value, it is considered that the change of the sampled data meets the predetermined value. The sender can obtain the information sending instruction if the information sending condition is set. In other embodiments, when the sampled data is an analog quantity, the preset information sending condition may also be that the analog quantity is greater than or equal to a threshold;

The other is that if the change of the sampled data in the preset sending period does not meet the preset information sending condition, at the end of the sending period, obtain the information sending instruction. If the changes in the sampled data do not meet the preset information sending conditions within the sending cycle, in order to ensure that the communication status between the sender and the receiver can be judged in time, the current sampled data is packaged and sent to the receiver. The sending period in this embodiment may be set corresponding to the response period.

In this embodiment, the information sending conditions of the sampled data are set, which can avoid the communication transmission pressure caused by the high frequency of the sampled data, and can also avoid the low communication frequency caused by the basically unchanged sampled data, thus causing the communication failure to be undetected. discovered in time.

In some of these embodiments, during the packaging process of the communication data packet, the internal fault diagnosis result of the sender may also be obtained, and the internal fault diagnosis result, sampling data and communication status are packaged to obtain the communication data packet. Among them, the internal fault diagnosis result is the fault diagnosis result of the sender's processor, specifically, the sender's internal diagnosis includes the judgment of the central processing unit (Central Processing Unit, referred to as CPU) information consistency and memory access information consistency , if there is an inconsistency, it is judged that there is a failure inside the sender, and the internal diagnosis also includes hardware failures running on the CPU, such as memory, clock, power failure and so on. In the case of an internal failure of the sender, the internal fault diagnosis result and the sampling data are packaged and sent together, and the receiver selects the sampling data according to the internal fault diagnosis result. Furthermore, the internal diagnosis can be realized by the following methods: memory check and error correction diagnosis (Error Checking and Correction, referred to as ECC), CPU logic diagnosis (The CPU Self-test Controller, referred to as STC), CPU comparison module (CPU Compare Module (referred to as CCM) verification, dual clock comparator module (Dual Clock Comparator Module, referred to as DCC) diagnosis.

Further, in other embodiments, the internal fault diagnosis results are also divided into multiple fault levels, and the receiver can select the sampling data according to the level of the fault level. In this embodiment, the sender also sends its own internal fault diagnosis results to the receiver, so that the receiver can select more credible sampled data for processing.

This embodiment also provides a communication failure detection method based on redundant equipment, which is applied to the receiver. Fig. 3 is a flow chart of another communication fault detection method based on redundant equipment according to an embodiment of the present application. As shown in Fig. 3, the method includes the following steps:

Step S310, within one communication cycle, receive multiple communication data packets from the same sender, wherein the communication data packets include the current sampling data and the communication status of the sender.

The sender redundancy setting in this application means that one receiver will receive communication data packets from multiple senders, and each sender will send multiple communication data packets to the receiver in each communication cycle.

Step S320, performing communication verification on the sampled data according to the communication protocol, and performing integrity verification on the sampled data according to the data identification in the sampled data.

After receiving the communication data packet, the receiver needs to perform communication verification and integrity verification on the sampled data. Only after all the verifications are passed, can the sampled data be determined to be correct and complete. Specifically, verification may be performed on all of the multiple communication data packets of each sender.

Communication verification is to verify the validity of the received sampling data according to the internal communication protocol, and judge whether the communication process of the sampling data conforms to the format of the communication protocol. The integrity verification is to judge according to the data identification in the sampling data Whether the sampled data is complete after communication transmission. Among them, the data identifier can be used to indicate the number of the sampled data, which can indicate the order of the sampled data. Further, the data identifier can also indicate which sender the sampled data comes from. The logo can also show the total amount of sampled data. Further, the integrity check in this embodiment can be implemented based on CRC check.

Step S330, judging whether to generate response data according to the results of the communication verification and integrity verification, and sending the response data to all senders within a preset response period if the response data is generated.

After the acquired sampling data has passed the communication check and integrity check, it can be judged that the receiver has received correct and complete data, and then the receiver sends response data to the sender. There is one in the communication check and integrity check If it fails to pass, it is considered that the communication status is abnormal, and no response data is generated, so as to prevent the system from frequently sending data and causing a crash when it is maliciously attacked. In this embodiment, "normal" can be directly sent to the sender as the response data. Further, the sending of the response data should be within the response period to confirm that the communication status is normal.

In this embodiment, for the same sender, the receiver may only respond to one communication data packet, or may respond to each communication data packet.

Through the above steps S310 to S330, the receiving party in this embodiment receives multiple communication data packets from the same sender within one communication cycle, and performs sampling data in multiple communication data packets in one communication cycle. Verification and response can determine the current communication status between the sender and the receiver, avoiding the need for multiple communication cycles in the related technology to confirm the communication failure, saving the time for communication failure confirmation, thus solving the problem in the related technology In the case of a communication failure, it takes a long time to confirm the communication failure, which affects the operation of each device, and realizes the rapid confirmation of the communication failure.

In some of these embodiments, after the communication verification and integrity verification are performed on the sampled data, multiple communication data packets need to be screened according to the data packet identification of each communication data packet. Specifically, the data packet identification can be based on the communication The source address and serial number information of the data packet are obtained. In this embodiment, if the receiving party receives multiple communication data packets from the same sender, since it only needs to process the data in one communication data packet, it is necessary to process the data from the same sender. It should be noted that the same sampling data sent by the same sender has the same source address and sequence number information.

Due to the redundant setting of the sender in this application, after screening and filtering, there may still be multiple communication data packets that meet the requirements, so it needs to be based on the timing of the receiving cycle corresponding to the sender and the communication status in the communication data packets , select the target communication data packet from the communication data packets that have passed the screening, wherein the receiving period and the response period are set correspondingly, and the received sampling data must be obtained within the preset receiving period. Finally, the receiver processes the data in the selected target communication data packet.

In this embodiment, the receiver screens and filters all the acquired communication data packets, so as to avoid a large waste of resources caused by processing multiple communication data packets.

In some of these embodiments, according to the timing of the receiving cycle corresponding to the sender and the communication state, selecting the target communication data packet from the communication data packets that pass the screening includes one of the following:

If the timing of the receiving cycle corresponding to the sender has not timed out, and the communication status in the communication data packet is normal, it means that the sender selected in the previous communication cycle is still working normally, then select the sender in the previous communication cycle The communication data packet sent in the current communication cycle is used as the target communication data packet;

When the timing of the receiving cycle corresponding to the sender has timed out, or the communication status in the communication data packet is abnormal, it means that the sender selected in the previous communication cycle has a communication failure, then switch the sender and select the same as the previous one. The communication data packet sent by the backup sender with different senders in the communication cycle in the current communication cycle is used as the target communication data packet, wherein the communication status of the backup sender should be normal, due to the redundant setting of the sender in this application, so When the communication status of one sender is abnormal, the backup sender can be used for communication;

When the timing of all receiving cycles corresponding to the sender has timed out, and the communication status in the communication data packet is abnormal, it means that all senders have communication failures, and the receiver obtains the preset failsafe value at this time Constitute the target communication data packet. Wherein, the failsafe value is a safe value that can make the entire system operate normally under communication failure.

In this embodiment, when selecting the target communication data packet, it is first possible to judge whether it is necessary to switch the sender of the target communication data packet according to the communication state and the receiving cycle. Keep the system running. Therefore, this embodiment avoids system breakdown due to communication failures based on redundantly configured senders and preset fail-safe values.

Furthermore, since multiple senders send data to the receiver at the same time, when the sender of the communication data packet is switched, the data of the sender that can work normally can be obtained directly, reducing the time delay caused by switching the sender.

This embodiment also provides a communication failure detection method based on redundant equipment, which is applied to multiple senders and one receiver. Fig. 4 is a flowchart of another communication failure detection method based on redundant equipment according to an embodiment of the present application. As shown in Fig. 4, the method includes the following steps:

Step S410, each sender packs the current sampling data and communication status to obtain a communication data packet after obtaining the information sending instruction;

Step S420, each sender sends the communication data packet to the receiver multiple times within a communication cycle, and starts the timing of the response cycle;

Step S430, the receiving party receives a plurality of communication data packets from each sending party within one communication cycle;

Step S440, the receiver performs communication verification on the sampled data according to the communication protocol, and performs integrity verification on the sampled data according to the data identifier in the sampled data; judges whether to generate response data according to the results of the communication verification and integrity verification, and then In the case of generating response data, send the response data to all senders within the preset response period;

Step S450, within the response period, each sender determines the communication status of the communication data packet in the next communication period according to whether it can receive the response data from the receiver.

Through the above steps S410 to S450, each sender in this embodiment sends communication data packets to the receiver multiple times within one communication cycle, and after the receiver receives multiple communication data packets from the same sender, By verifying and responding to the sampling data in multiple communication data packets in a communication cycle, and then the sender judges the communication status between the two according to whether the response data can be received in the response cycle, avoiding the related technology, Multiple communication cycles are required to confirm the communication fault, which saves the time for confirming the communication fault, thereby solving the problem in the related art that it takes a long time to confirm the communication fault in the event of a communication fault, thereby affecting the operation of each device. , realizing fast and efficient confirmation of communication faults.

The solution in this application is described below through an optional embodiment. In this embodiment, there are two senders, and each sender sends the communication data packet three times in one communication cycle.

Specifically, the process of the sender is as follows:

Step 11, when the sender obtains the information sending instruction, it packs its own communication status and sampling data together;

Step 12, the sender sends the packaged communication data packets to the receiver for 3 consecutive times, and at the same time starts the response timeout timer, and starts the timing of the response cycle;

Step 13, if the sender receives a packet of response data from the receiver before the response timeout timer expires, it will consider the current communication status to be normal, and close the response timeout timer; otherwise, set the current communication status as abnormal and start the next communication cycle, inform the receiver.

The receiver's process is as follows:

Step 21, the receiver receives all communication data packets from the two senders;

Step 22, the receiving party performs communication verification and integrity verification on the communication data packet. After the verification is completed, if the communication data packet verification is passed, the receiving party starts the receiving timeout timer to time the receiving cycle and detect the next communication Whether the communication data packets in the cycle time out, and send the response data of the current communication cycle to the initiator; if the communication data packet arrives within the time of the receiving timeout timer in the current communication cycle, it is considered that the receiving timeout state is normal, otherwise , it is considered that the receiving timeout state is abnormal;

Step 23, for the communication data packets that have passed the communication verification and integrity verification, the receiver then filters the communication data packets according to the data packet identification including the address and the data packet sequence number, and simultaneously selects a communication data packet of the sender for processing. calculate.

Table 1 is a communication data packet selection table according to the embodiment of the present application. As shown in Table 1, the two senders are represented by left and right cards respectively.

Table 1

Normally, if the communication status is normal, maintain one sender as the data source; when only one communication data packet has normal communication status, select the sender with normal communication status as the data source; in the communication of the sender If the status is all faults, obtain the preset fail-safe value for processing.

In this embodiment, each sender sends communication data packets to the receiver multiple times within one communication cycle, and after receiving multiple communication data packets from the same The sampling data in each communication data packet is verified and responded, and then the sender judges the communication status between the two according to the response data returned by the receiver within the response period, which can efficiently and quickly judge the current relationship between the sender and the receiver. communication status.

It should be noted that the steps shown in the above flow or in the flow chart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flow chart, the In some cases, the steps shown or described may be performed in an order different from that herein.

The method embodiments provided in this application can be executed in a terminal, a computer or a similar computing device. Taking running on a terminal as an example, FIG. 5 is a block diagram of a hardware structure of a terminal in a method for detecting a communication failure based on a redundant device according to an embodiment of the present application. As shown in FIG. 5, the terminal 50 may include one or more (only one is shown in FIG. 5) processors 502 (the processors 502 may include but not limited to processing devices such as microprocessor MCU or programmable logic device FPGA, etc.) and a memory 504 for storing data. Optionally, the terminal may further include a transmission device 506 and an input and output device 508 for communication functions. Those of ordinary skill in the art may understand that the structure shown in FIG. 5 is only for illustration, and does not limit the structure of the above-mentioned terminal. For example, the terminal 50 may also include more or fewer components than those shown in FIG. 5, or have a different configuration than that shown in FIG.

The memory 504 can be used to store control programs, for example, software programs and modules of application software, such as the control program corresponding to the communication fault detection method based on redundant equipment in the embodiment of the present application, the processor 502 runs the stored in the memory 504 The control program executes various functional applications and data processing, that is, realizes the above-mentioned method. The memory 504 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 504 may further include a memory that is remotely located relative to the processor 502, and these remote memories may be connected to the terminal 50 through a network. Examples of the aforementioned networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

Transmission device 506 is used to receive or transmit data via a network. The specific example of the above network may include a wireless network provided by the communication provider of the terminal 50 . In one example, the transmission device 506 includes a network adapter (Network Interface Controller, NIC for short), which can be connected to other network devices through a base station so as to communicate with the Internet. In an example, the transmission device 506 may be a radio frequency (Radio Frequency, referred to as RF) module, which is used to communicate with the Internet in a wireless manner.

This embodiment also provides a communication failure detection device based on a redundant device, which is used to implement the above embodiments and optional implementation modes, and those that have already been described will not be described again. As used below, the terms "module", "unit", "subunit" and the like may be a combination of software and/or hardware that realize a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementations in hardware, or a combination of software and hardware are also possible and contemplated.

The communication fault detection device provided in this embodiment is used as a sender. FIG. 6 is a structural block diagram of a communication fault detection device based on redundant devices according to an embodiment of the present application. As shown in FIG. 6 , the device includes a packaging module 61. Sending module 62 and response module 63:

Packing module 61, used to pack the current sampling data and communication status to obtain a communication data packet when the information sending instruction is obtained;

The sending module 62 is used to send the communication data packet to the receiver multiple times within one communication cycle, and start the timing of the response cycle;

The response module 63 is configured to determine the communication status of the communication data packet in the next communication cycle according to whether the receiver's response data can be received within the response cycle.

In this embodiment, the sender realizes the packaging of the communication data packets through the packaging module 61 within a communication cycle, then sends the communication data packets to the receiver multiple times through the sending module 62, and finally passes the response module 63 according to whether the communication data packets can be sent in the response cycle. The response data is received to judge the communication status between the sender and the receiver, which avoids the need for multiple communication cycles to confirm the communication failure in the related technology, saves the time for confirming the communication failure, and thus solves the problem of communication failure in the related technology. In the case of a fault, it takes a long time to confirm the communication fault, which affects the operation of each device, and realizes the rapid confirmation of the communication fault.

The communication fault detection device provided in this embodiment is used as a receiver. FIG. 7 is a structural block diagram of another communication fault detection device based on redundant devices according to an embodiment of the present application. As shown in FIG. 7 , the device includes a receiver Module 71, checking module 72 and feedback module 73:

The receiving module 71 is configured to receive a plurality of communication data packets from the same sender within one communication cycle, wherein the communication data packets include the current sampling data and the communication status of the sender;

The verification module 72 is used for performing communication verification on the sampled data according to the communication protocol, and performing integrity verification on the sampled data according to the data identifier in the sampled data;

The feedback module 73 is configured to judge whether to generate response data according to the results of the communication check and the integrity check, and send the response data to all senders within a preset response period if the response data is generated.

In this embodiment, the receiving party receives multiple communication data packets of the same sender through the receiving module 71 within one communication cycle, and the sampling data in the multiple communication data packets in one communication cycle is checked by the verification module 72. Verify, and finally complete the response to the sender through the feedback module 73 to judge the current communication status between the sender and the receiver, avoiding the need for multiple communication cycles in the related art to confirm the communication fault, saving the time for confirming the communication fault Time, thereby solving the problem in the related art that it takes a long time to confirm the communication failure in the case of a communication failure, thereby affecting the operation of each device, and realizing the rapid confirmation of the communication failure.

FIG. 8 is a structural block diagram of a communication failure detection system based on redundant equipment according to an embodiment of the present application. As shown in FIG. 8, the system includes multiple senders 81 and a receiver 82:

Each sender 81 packs the current sampling data and communication status to obtain a communication data packet when the information sending instruction is obtained;

Each sender 81 sends the communication data packet to the receiver 82 multiple times within a communication cycle, and starts the timing of the response cycle;

The receiver 82 receives a plurality of communication data packets from each sender 81 within a communication cycle;

Receiver 82 carries out communication verification to sampling data according to communication protocol, carries out integrity verification to sampling data according to the data mark in sampling data; Judging whether to generate response data according to the result of communication verification and integrity verification, generates response In the case of data, send the response data to all senders 81 within the preset response period;

Each sender 81 determines the communication status of the communication data packet in the next communication cycle according to whether it can receive the response data from the receiver 82 within the response cycle.

In this embodiment, each sender 81 sends the communication data packet to the receiver 82 multiple times in one communication cycle, and after the receiver 82 receives a plurality of communication data packets from the same sender 81, it sends a Sampling data in a plurality of communication data packets in the communication cycle is verified and responded, and then the sender 81 judges the communication state between the two according to the response data returned by the receiver 82 in the response cycle, and the current sender 81 can be judged. The communication state with the receiver 82 avoids the need for multiple communication cycles in the related art to confirm the communication failure, saves the time for confirming the communication failure, and thus solves the problem of communication failure in the related art. It takes a long time to confirm the communication failure, which affects the operation of each device, and realizes the fast and efficient confirmation of communication failure.

It should be noted that each of the above-mentioned modules may be a function module or a program module, and may be realized by software or by hardware. For the modules implemented by hardware, the above modules may be located in the same processor; or the above modules may be located in different processors in any combination.

This embodiment also provides an electronic device, including a memory and a processor, where a computer program is stored in the memory, and the processor is configured to run the computer program to execute the steps in any one of the above method embodiments.

Optionally, the above-mentioned electronic device may further include a transmission device and an input-output device, wherein the transmission device is connected to the above-mentioned processor, and the input-output device is connected to the above-mentioned processor.

Optionally, in this embodiment, the above-mentioned processor may be configured to execute the following steps through a computer program:

S11. Packing the current sampled data and communication status to obtain a communication data packet when the information sending instruction is obtained.

S12. In one communication cycle, send the communication data packets to the receiver multiple times, and start timing the response cycle.

S13. In the response cycle, determine the communication status of the communication data packet in the next communication cycle according to whether the response data from the receiver can be received.

Optionally, in this embodiment, the above-mentioned processor may also be configured to execute the following steps through a computer program:

S21, within a communication cycle, receive multiple communication data packets from the same sender, wherein the communication data packets include the current sampling data and the communication status of the sender;

S22, performing communication verification on the sampled data according to the communication protocol, and performing integrity verification on the sampled data according to the data identifier in the sampled data;

S23, judging whether to generate response data according to the results of the communication verification and integrity verification, and sending the response data to all senders within a preset response period if the response data is generated.

It should be noted that, for specific examples in this embodiment, reference may be made to the examples described in the foregoing embodiments and optional implementation manners, and details will not be repeated in this embodiment.

In addition, in combination with the redundant device-based communication fault detection method in the foregoing embodiments, the embodiments of the present application may provide a storage medium for implementation. A computer program is stored on the storage medium; when the computer program is executed by the processor, any method for detecting a communication fault based on a redundant device in the above embodiments is implemented.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the present application, and the description thereof is relatively specific and detailed, but should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of protection of the patent application should be based on the appended claims.

Claims

A communication failure detection method based on redundant equipment, characterized in that it is applied to the sender, and the method includes:

When the information sending instruction is obtained, the current sampling data and communication status are packaged to obtain a communication data packet;

In a communication cycle, the communication data packet is sent to the receiver multiple times, and the timing of the response cycle is started;

In the response period, according to whether the receiver's response data can be received, the communication status of the communication data packet in the next communication period is determined.
The communication failure detection method based on redundant equipment according to claim 1, wherein, within one communication cycle, sending the communication data packet to the receiver multiple times comprises:

Obtaining initial sampling data, calculating the initial sampling data through various verification algorithms, and obtaining multiple different communication sampling data after calculation;

Packing the plurality of different communication sampling data, the initial sampling data and the communication state to obtain the communication data packet;

In the communication period, the communication data packet is sent to the receiver multiple times.
The communication fault detection method based on redundant equipment according to claim 1, wherein obtaining the information sending instruction comprises one of the following:

If the change of the sampled data meets the preset information sending condition, acquire the information sending instruction;

If none of the changes in the sampled data within the preset sending period meet the preset information sending condition, the information sending instruction is acquired at the end of the sending period.
The communication failure detection method based on redundant equipment according to claim 1, wherein, in the case of obtaining the information sending instruction, packaging the current sampling data and communication status, and obtaining the communication data packet also includes:

Obtain an internal fault diagnosis result, pack the internal fault diagnosis result, the sampling data, and the communication status to obtain a communication data packet.
The communication fault detection method based on redundant equipment according to claim 1, wherein, in the response period, according to whether the response data of the receiver can be received, determine whether the communication failure in the next communication period The communication status of the packet includes:

In the response period, if the response data of the receiver is received, the communication status of the communication data packet in the next communication period is normal, and the timing of the response period is stopped;

In the response period, if no response data from the receiver is received, the communication status of the communication data packet in the next communication period is abnormal.
A communication failure detection method based on redundant equipment, characterized in that it is applied to the receiver, and the method includes:

Within a communication cycle, receiving multiple communication data packets from the same sender, wherein the communication data packets include the current sampling data and the communication status of the sender;

Performing a communication check on the sampled data according to a communication protocol, and performing an integrity check on the sampled data according to a data identifier in the sampled data;

According to the results of the communication check and the integrity check, it is judged whether to generate response data, and if the response data is generated, within the preset response period, the response data is sent to all the sending square.
The communication failure detection method based on redundant equipment according to claim 6, characterized in that, performing communication verification on the sampled data according to the communication protocol, and performing a communication check on the sampled data according to the data identification in the sampled data After the data is checked for integrity, the method further includes:

screening multiple communication data packets according to the data packet identification of each of the communication data packets;

According to the timing of the receiving cycle corresponding to the sender, and the communication status, select the target communication data packet from the communication data packets that have passed the screening;

Process the data in the target communication packet.
The communication failure detection method based on redundant equipment according to claim 7, wherein, according to the timing of the receiving cycle corresponding to the sender, and the communication state, the target is selected in the communication data packets that pass the screening Communication packets include one of the following:

When the timing of the receiving cycle corresponding to the sender has not timed out, and the communication status in the communication data packet is normal, select the communication data packet sent by the sender in the current communication cycle in the previous communication cycle as The target communication data packet;

When the timing of the receiving cycle corresponding to the sender has timed out, or the communication state in the communication data packet is abnormal, select an alternate sender different from the sender in the previous communication cycle to be in the current communication cycle The sent communication data packet is used as the target communication data packet, wherein the communication status of the standby sender is normal;

When the timing of all receiving periods corresponding to the sender has timed out and the communication status in the communication data packet is abnormal, a preset fail-safe value is obtained to form the target communication data packet.
A communication failure detection method based on redundant equipment, characterized in that it is applied to a plurality of senders and a receiver, the method comprising:

Each of the senders packs the current sampling data and communication status to obtain a communication data packet when the information sending instruction is obtained;

Each of the senders sends the communication data packets to the receiver multiple times within a communication cycle, and starts the timing of the response cycle;

The receiver receives a plurality of communication data packets from each of the senders within one communication period;

The receiver performs communication verification on the sampled data according to the communication protocol, and performs integrity verification on the sampled data according to the data identifier in the sampled data; according to the communication verification and the integrity verification judge whether to generate response data according to the results, and if the response data is generated, send the response data to all the senders within the preset response period;

Each of the senders determines the communication status of the communication data packet in the next communication cycle according to whether the sender can receive the response data from the receiver within the response cycle.
A kind of communication failure detection equipment based on redundant equipment, it is characterized in that, described equipment comprises packing module, sending module and response module:

The packing module is used to pack the current sampling data and communication status to obtain a communication data packet when the information sending instruction is obtained;

The sending module is used to send the communication data packet to the receiver multiple times within one communication cycle, and start the timing of the response cycle;

The response module is configured to determine the communication status of the communication data packet in the next communication cycle according to whether the receiver's response data can be received within the response cycle.
A kind of communication fault detection equipment based on redundant equipment, it is characterized in that, described equipment comprises receiving module, verification module and feedback module:

The receiving module is configured to receive multiple communication data packets from the same sender within one communication cycle, wherein the communication data packets include current sampling data and the communication status of the sender;

The verification module is configured to perform communication verification on the sampled data according to a communication protocol, and perform integrity verification on the sampled data according to a data identifier in the sampled data;

The feedback module is configured to judge whether to generate response data according to the results of the communication check and the integrity check, and if the response data is generated, within a preset response period, send the response to Data is sent to all said senders.
A communication failure detection system based on redundant equipment, characterized in that the system includes a plurality of senders and a receiver:

Each of the senders packs the current sampling data and communication status to obtain a communication data packet when the information sending instruction is obtained;

Each of the senders sends the communication data packets to the receiver multiple times within one communication cycle, and starts the timing of the response cycle;

The receiver receives a plurality of communication data packets from each of the senders within one communication period;

The receiver performs communication verification on the sampled data according to the communication protocol, and performs integrity verification on the sampled data according to the data identifier in the sampled data; according to the communication verification and the integrity verification judge whether to generate response data according to the results, and if the response data is generated, send the response data to all the senders within the preset response period;

Each of the senders determines the communication status of the communication data packet in the next communication cycle according to whether the sender can receive the response data from the receiver within the response cycle.
An electronic device comprising a memory and a processor, wherein a computer program is stored in the memory, and the processor is configured to run the computer program to perform the method described in any one of claims 1 to 9 Communication fault detection method based on redundant equipment.
A storage medium, characterized in that a computer program is stored in the storage medium, wherein the computer program is configured to perform the communication failure based on redundant equipment described in any one of claims 1 to 9 when running The steps of the detection method.