CN112526979B - Serial communication interface diagnosis system and method with multiple redundancy architecture - Google Patents
Serial communication interface diagnosis system and method with multiple redundancy architecture Download PDFInfo
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Abstract
The invention discloses a serial communication interface diagnosis system with a multiple redundancy architecture, which comprises two identical serial communication channels, namely a channel A and a channel B, and slave equipment, wherein the slave equipment is respectively connected with the channel A and the channel B, and each channel comprises a communication control module, a diagnosis control module, an RS485 interface chip 1, an RS485 interface chip 2 and analog control switches S1, S2, S3 and S4; the system can be flexibly configured through a control switch according to specific application requirements, can be configured into a single-channel redundant system, a single-channel redundant system and a double-channel redundant system, and can be applied to scenes with different requirements; through a series of diagnosis and redundancy modes, the diagnosis coverage rate of the system is greatly improved, the diagnosis coverage rate of the system can reach more than 99%, and meanwhile, the reliability and usability of the system are greatly improved.
Description
Technical Field
The invention relates to the technical field of industrial control, in particular to a serial communication interface diagnosis system and method of a multiple redundancy architecture.
Background
The serial communication interface is characterized in that data transmission can be realized by utilizing a single data line in a bit-to-bit manner, the data transmission can be realized through a simple cable, the equipment is simple, the cost is low, the transmission distance is long, the serial communication interface commonly adopted in the technical field of industrial control at present is an RS485 interface, the RS485 standard only prescribes a physical layer in OSI specification, and only one electric standard does not prescribe a connector, a communication protocol and the like. The RS485 interface adopts a differential balance level standard, the voltage value of one signal line is the inverse of the voltage value of the other signal line on two signal lines of the RS485 interface, the receiving end judges corresponding logic '1' or '0' through the difference value of the two signal lines, and the differential balance circuit can greatly inhibit the influence of different noise and ground planes, has stronger anti-interference capability and longer transmission distance and supports a point-to-multipoint communication mode. Aiming at an RS485 standard interface, the best known communication protocol in the industry is the modbus developed by a modicon company, the modbus communication protocol follows the communication steps of master and slave, one party is a master device, the other is a slave device, and the master device controls the communication logic of the whole system.
At present, a serial communication interface in the electronic industry mainly adopts two communication diagnosis modes of single-bit data redundancy and multi-bit data redundancy, wherein the single-bit data redundancy adopts a parity check mode, checks according to whether the number of 1's in a binary code of transmission data is odd or even, adopts odd check as odd check and even check as even check, generally carries out parity check once for each byte, namely 8bit data, in the serial communication interface, and adds check bits to the back of data bits; the multi-bit data redundancy adopts a CRC check mode, a check code with a certain length is added behind a data frame to be transmitted, a new data frame is generated and transmitted to a receiving end, the data receiving end calculates according to a contracted CRC data polynomial, the calculated CRC result is compared with the received CRC result, and if the calculated CRC result is consistent with the received CRC result, the CRC check is correct, and a general serial communication interface adopts a 16-bit polynomial CRC for check.
However, in the prior art, the diagnostic coverage rate of two communication diagnostic modes is not high, the diagnostic coverage rate can only reach 60% at most by adopting a one-bit data redundancy mode, and the diagnostic coverage rate can only reach 90% at most by adopting a multi-bit data redundancy mode when errors occur to the data bits in common parity check. All odd errors and a part of burst errors can be detected by the CRC, the capability of detecting the burst errors and the order of the generating polynomial of the CRC are related, the higher the order is, the smaller the probability of misjudgment is, but the higher the order of the generating polynomial of the CRC is, the computing capability requirement of the CRC is increased exponentially, the performance of other parts is affected, so that the balance is generally adopted between the two, and the 16-bit CRC polynomial is selected for verification.
In addition, after the serial communication fault is diagnosed, the prior art can not timely isolate the fault, so that the information transmission is broken, no extra redundancy means is used for transmitting effective data, and the safety function execution and the normal operation of the whole system can be influenced in the technical field of industrial control with very strict requirements on data stability and reliability.
Disclosure of Invention
The invention aims to solve the technical problem of providing a serial communication interface diagnosis system and a serial communication interface diagnosis method with multiple redundancy architecture, which are used for improving the reliability and the diagnosis coverage rate of a serial communication interface through means of multiple redundancy architecture, diagnosis technology, software logic control and the like, and the system can automatically isolate a fault interface and switch the redundant communication interface for effective data transmission after the serial communication interface breaks down.
The invention is realized by the following technical scheme:
in the prior art, the diagnosis coverage rate of two communication diagnosis modes of single-bit data redundancy and multi-bit data redundancy of the serial communication interface is not high, and the prior art cannot timely isolate faults after diagnosing the serial communication faults, so that information transmission is broken, effective data transmission is carried out without extra redundancy means, the stability and the reliability of the system are not high, and the safety function execution and the normal operation of the whole system are affected. The invention relates to a serial communication interface diagnosis system with a multiple redundancy architecture, which comprises two identical serial communication channels, namely a channel A and a channel B, and slave equipment, wherein the slave equipment is respectively connected with the channel A and the channel B, each channel comprises a communication control module, a diagnosis control module, an RS485 interface chip 1, an RS485 interface chip 2, analog control switches S1, S2, S3 and S4, and the communication control module of the channel A is connected with the communication control module of the channel B;
the communication control module is respectively connected with the diagnosis control module and the RS485 interface chip 1 to realize communication function logic control;
the diagnosis control module is respectively connected with the communication control module and the RS485 interface chip 2 to realize the logic control of the diagnosis function;
the RS485 interface chip 1 is connected with the RS485 interface chip 2 to realize the conversion between TTL level and RS485 level;
the control switch is arranged between the output ports of the RS485 interface chip 1 and the RS485 interface chip 2, wherein the control switches S1 and S2 are connected with the interface chip 1, and the control switches S3 and S4 are connected with the interface chip 2 to realize the connection and disconnection of the output passage of the RS485 interface chip.
According to specific use conditions, system architecture configuration is carried out, when control switches S1 and S2 of a channel A are closed, and S3 and S4 are opened, a diagnosis control module does not work, and meanwhile, when a channel B does not work, the system is single-channel communication, and diagnosis verification is carried out on the single-channel communication system by adopting a one-bit data redundancy, multi-bit data redundancy and information redundancy retransmission mechanism, so that the problem of low diagnosis coverage rate in the prior art is solved; the diagnosis control module compares and checks continuous two frames of data with completely consistent content of the received data fields, the two frames of data are checked in different manners, for example, the first frame of data adopts CRC check with odd checksum polynomial of 0xBAAD, the second frame of data adopts CRC check with even checksum polynomial of 0xC86C, common-cause failure of a serial communication interface in the data transmission process can be reduced through the difference of the two checking manners, and the diagnosis coverage rate of a channel can be improved to 99% through adding an information redundancy retransmission mechanism.
When the control switches S1, S2, S3 and S4 of the channel A are closed and the diagnosis control module works, and meanwhile, the channel B does not work, the system is of a single-channel redundancy architecture, and diagnosis and verification are carried out on the single-channel redundancy architecture system by adopting a single-bit data redundancy, multi-bit data redundancy and information redundancy retransmission mechanism.
The diagnosis process of the data transmission stage of the single-channel redundancy architecture system specifically comprises the following steps:
s111, a communication control module of the channel A sends framing data to a data receiving port and a diagnosis control module of the RS485 interface chip 1;
s112, the diagnosis control module receives the framing data; the RS485 interface chip 1 receives the framing data, converts TTL level into RS485 level and outputs an RS485 signal;
s113, the RS485 interface chip 2 receives the RS485 signal for processing and outputs stoping data;
s114, the diagnosis control module receives the stoping data, compares the stoping data with the framing data, and if the framing data is different from the stoping data, indicates that a normal communication channel fails;
s115, when the diagnosis control module diagnoses that the normal communication channel has faults, the control switches S1 and S2 are disconnected, the fault channel is isolated and cut off, the diagnosis control module changes the function at the moment and does not serve as a diagnosis function, and the diagnosis control module is used as a normal data sending module to transmit framing data through the RS485 interface chip 2.
The diagnosis process of the data receiving stage of the single-channel redundancy architecture system specifically comprises the following steps:
s121, the communication control module receives data input from equipment through the RS485 interface chip 1 from a normal communication channel, and meanwhile, the diagnosis control module receives data input from the equipment through the RS485 interface chip 2 from a diagnosis channel;
s122, the communication control module analyzes the input data and outputs analysis data;
s123, the diagnosis control module receives the analysis data, compares the analysis data with data input from equipment, and if the analysis data and the data are different, indicates that a receiving channel fails, wherein the receiving channel represents at least one of a diagnosis channel and a normal communication channel;
and S124, the diagnosis control module performs diagnosis and verification on the receiving channel by combining a one-bit data redundancy mechanism, a multi-bit data redundancy mechanism and an information redundancy retransmission mechanism, when a normal communication channel is diagnosed to have faults, the control switches S1 and S2 are opened, the control switches S3 and S4 are closed, the fault channel is isolated and cut off, and the diagnosis channel is used for data transceiving instead of the normal communication channel.
For a single-channel redundancy architecture system, when a receiving channel fails, whether the receiving channel is a diagnosis channel or a normal channel is problematic is determined through data comparison, only one diagnosis channel and at least one normal communication channel are problematic, and at the moment, one-bit data redundancy, multi-bit data redundancy and an information redundancy retransmission mechanism are adopted for diagnosis and verification to jointly determine which channel fails. The added diagnosis control module, the redundant RS485 interface chip and the redundant control analog switch enable the diagnosis coverage rate of the system to be higher, have hardware redundancy, timely isolate faults after the faults occur, and guarantee effective transmission of data.
When the control switches S1, S2, S3 and S4 of the channel A and the channel B are closed, the system is a double-channel redundancy architecture, and a single-bit data redundancy, a multi-bit data redundancy and an information redundancy retransmission mechanism are adopted for diagnosis and verification of the double-channel redundancy architecture system. The dual-channel redundancy architecture system is characterized in that a layer of redundancy architecture is added on the basis of the single redundancy system, the problem that diagnosis channel faults possibly occur and are mistakenly considered to be normal channel faults, so that misjudgment is caused is solved, a channel A is a single redundancy system, and a channel B and a channel A are completely consistent, so that the dual-channel redundancy architecture system is formed.
The diagnosis process of the data transmission control process of the dual-channel redundancy architecture system comprises the following steps:
s211, judging whether the channel A communicates normally or not by judging the channel state identification bit, if so, closing the corresponding fault channel, and informing the channel B of the fault state; if the channel A communicates normally, the channel A prepares to send data, copies the data to be sent to a part, and transmits the data to the channel B;
s212, judging whether the channel B communicates normally or not by judging the channel state identification bit, if so, closing the corresponding fault channel, and informing the channel A of the fault state; if the channel B communicates normally, the channel B carries out data framing to obtain transmission data, and the framing process comprises adding a one-bit data redundancy, a multi-bit data redundancy and an information redundancy retransmission mechanism;
s213, carrying out data framing on data to be transmitted by a channel A to obtain transmitted data, wherein the framing process comprises adding a one-bit data redundancy, a multi-bit data redundancy and an information redundancy retransmission mechanism;
s214, the channel A and the channel B control the communication control module to simultaneously send data to the slave equipment through timing pulse signals among the channels, and the slave equipment judges which channel has a fault through judging channel state identification bits in the data and discards the corresponding fault channel data;
s215, when data is transmitted, diagnostic channels in the channel A and the channel B read back the transmitted data;
s216, the diagnosis control modules of the channel A and the channel B respectively carry out comparison diagnosis on the respective sending data and the readback data, if the sending data and the readback data of the channel A or the channel B are inconsistent to indicate that the corresponding channel fails, the channel state bit of the next frame data of the channel A and the channel B is identified, and the steps S211-S216 are repeated.
The diagnosis process of the data receiving control process of the dual-channel redundancy architecture system comprises the following steps:
s221, the normal communication channel of the channel A, the normal communication channel of the diagnosis channel and the normal communication channel of the channel B, and the diagnosis channel simultaneously receive the data uploaded from the equipment;
s222, carrying out 2oo4 voting diagnosis on four groups of data received by the channel A and the channel B, wherein the voting logic is as follows: judging whether the voting result has two or more data consistency, if so, taking the value of the data consistency as normal data; if the voting result is negative, indicating that a channel fails;
s223, outputting the normal data after 2oo4 voting to other modules, reporting the voting diagnosis state, adding the channel state identification to the channel state identification bit of the next frame transmission data, and informing the slave device whether the communication channel has faults.
The functions of the dual-channel redundancy architecture system include the verification means, the diagnosis means and the judgment logic in the single-channel redundancy architecture and the single-channel redundancy architecture. The reliability and the usability of the system are greatly improved, the system can still normally operate even when certain faults occur to the system, the system is ensured to have enough time to complete the task stage being executed, and meanwhile, the fault state information is reported in time.
Further, in order to ensure that the communication control module and the diagnosis control module in the channel A or the channel B can synchronously perform data processing, the communication control module generates a timing pulse signal through a timer and sends the timing pulse signal to the diagnosis control module, and the diagnosis control module performs flow control and the communication control module synchronously perform data processing according to the received timing pulse signal.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the system architecture is clear and simple, higher safety and reliability are realized with lower cost, and main control logic is realized by software and can be realized in different processor systems; the system can be flexibly configured according to specific application requirements, can be configured into single channel redundancy, single channel redundancy and double channel redundancy, and can be applied to scenes with different requirements; through a series of diagnosis and redundancy modes, the diagnosis coverage rate of the system is greatly improved, the diagnosis coverage rate of the system can reach more than 99%, meanwhile, the reliability and the usability of the system are greatly improved, the system can still normally operate even if certain faults occur in the system, the system is ensured to have enough time to complete the task stage in execution, and meanwhile, fault state information is timely reported.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention. In the drawings:
FIG. 1 is a schematic diagram of a system architecture of the present invention;
FIG. 2 is a flow chart of a single channel redundancy architecture system data transmission process;
FIG. 3 is a flow chart of a single channel redundancy architecture system data reception process;
FIG. 4 is a flow chart of a control process for data transmission of a dual-channel redundancy architecture system;
fig. 5 is a flow chart of a data receiving control process of the dual-channel redundancy architecture system.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present invention and the descriptions thereof are for illustrating the present invention only and are not to be construed as limiting the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one of ordinary skill in the art that: no such specific details are necessary to practice the invention. In other instances, well-known structures, circuits, materials, or methods have not been described in detail in order not to obscure the invention.
Throughout the specification, references to "one embodiment," "an embodiment," "one example," or "an example" mean: a particular feature, structure, or characteristic described in connection with the embodiment or example is included within at least one embodiment of the invention. Thus, the appearances of the phrases "in one embodiment," "in an example," or "in an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, or characteristics may be combined in any suitable combination and/or sub-combination in one or more embodiments or examples. Moreover, those of ordinary skill in the art will appreciate that the illustrations provided herein are for illustrative purposes and that the illustrations are not necessarily drawn to scale. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
In the description of the present invention, it should be understood that the terms "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "high", "low", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the scope of the present invention.
Example 1
In the prior art, the diagnosis coverage rate of two communication diagnosis modes of single-bit data redundancy and multi-bit data redundancy of the serial communication interface is not high, and the prior art cannot timely isolate faults after diagnosing the serial communication faults, so that information transmission is broken, effective data transmission is carried out without extra redundancy means, the stability and the reliability of the system are not high, and the safety function execution and the normal operation of the whole system are affected. The invention relates to a serial communication interface diagnosis system with a multiple redundancy architecture, which is shown in figure 1, and comprises two identical serial communication channels of a channel A and a channel B, slave equipment, wherein the slave equipment is respectively connected with the channel A and the channel B, each channel comprises a communication control module, a diagnosis control module, an RS485 interface chip 1, an RS485 interface chip 2, analog control switches S1, S2, S3 and S4, and the communication control module of the channel A is connected with the communication control module of the channel B;
the communication control module is respectively connected with the diagnosis control module and the RS485 interface chip 1 to realize communication function logic control;
the diagnosis control module is respectively connected with the communication control module and the RS485 interface chip 2 to realize the logic control of the diagnosis function;
the RS485 interface chip 1 is connected with the RS485 interface chip 2 to realize the conversion between TTL level and RS485 level;
the control switch is arranged between the output ports of the RS485 interface chip 1 and the RS485 interface chip 2, wherein the control switches S1 and S2 are connected with the interface chip 1, and the control switches S3 and S4 are connected with the interface chip 2 to realize the connection and disconnection of the output passage of the RS485 interface chip.
According to specific use conditions, system architecture configuration is carried out, when control switches S1 and S2 of a channel A are closed, and S3 and S4 are opened, a diagnosis control module does not work, and meanwhile, when a channel B does not work, the system is single-channel communication, and diagnosis verification is carried out on the single-channel communication system by adopting a one-bit data redundancy, multi-bit data redundancy and information redundancy retransmission mechanism, so that the problem of low diagnosis coverage rate in the prior art is solved; the diagnosis control module compares and checks continuous two frames of data with completely consistent content of the received data fields, the two frames of data are checked in different manners, for example, the first frame of data adopts CRC check with odd checksum polynomial of 0xBAAD, the second frame of data adopts CRC check with even checksum polynomial of 0xC86C, common-cause failure of a serial communication interface in the data transmission process can be reduced through the difference of the two checking manners, and the diagnosis coverage rate of a channel can be improved to 99% through adding an information redundancy retransmission mechanism.
When the control switches S1, S2, S3 and S4 of the channel A are closed and the diagnosis control module works, and meanwhile, the channel B does not work, the system is of a single-channel redundancy architecture, and diagnosis and verification are carried out on the single-channel redundancy architecture system by adopting a single-bit data redundancy, multi-bit data redundancy and information redundancy retransmission mechanism.
As shown in fig. 2, the diagnostic procedure of the data transmission phase of the single channel redundancy architecture system specifically includes steps S111-S114:
s111, a communication control module of the channel A sends framing data to a data receiving port and a diagnosis control module of the RS485 interface chip 1;
s112, the diagnosis control module receives the framing data; the RS485 interface chip 1 receives the framing data, converts TTL level into RS485 level and outputs an RS485 signal;
s113, the RS485 interface chip 2 receives the RS485 signal for processing and outputs stoping data;
s114, the diagnosis control module receives the stoping data, compares the stoping data with the framing data, and if the framing data is different from the stoping data, indicates that a normal communication channel fails;
s115, when the diagnosis control module diagnoses that the normal communication channel has faults, the control switches S1 and S2 are disconnected, the fault channel is isolated and cut off, the diagnosis control module changes the function at the moment and does not serve as a diagnosis function, and the diagnosis control module is used as a normal data sending module to transmit framing data through the RS485 interface chip 2.
As shown in fig. 3, the diagnosis process of the data receiving stage of the single channel redundancy architecture system specifically includes steps S121 to S124:
s121, the communication control module receives data input from equipment through the RS485 interface chip 1 from a normal communication channel, and meanwhile, the diagnosis control module receives data input from the equipment through the RS485 interface chip 2 from a diagnosis channel;
s122, the communication control module analyzes the input data and outputs analysis data;
s123, the diagnosis control module receives the analysis data, compares the analysis data with data input from equipment, and if the analysis data and the data are different, indicates that a receiving channel fails, wherein the receiving channel represents at least one of a diagnosis channel and a normal communication channel;
and S124, the diagnosis control module performs diagnosis and verification on the receiving channel by combining a one-bit data redundancy mechanism, a multi-bit data redundancy mechanism and an information redundancy retransmission mechanism, when a normal communication channel is diagnosed to have faults, the control switches S1 and S2 are opened, the control switches S3 and S4 are closed, the fault channel is isolated and cut off, and the diagnosis channel is used for data transceiving instead of the normal communication channel.
For a single-channel redundancy architecture system, when a receiving channel fails, whether the receiving channel is a diagnosis channel or a normal channel is problematic is determined through data comparison, only one diagnosis channel and at least one normal communication channel are problematic, and at the moment, one-bit data redundancy, multi-bit data redundancy and an information redundancy retransmission mechanism are adopted for diagnosis and verification to jointly determine which channel fails. The added diagnosis control module, the redundant RS485 interface chip and the redundant control analog switch enable the diagnosis coverage rate of the system to be higher, have hardware redundancy, timely isolate faults after the faults occur, and guarantee effective transmission of data.
When the control switches S1, S2, S3 and S4 of the channel A and the channel B are closed, the system is a double-channel redundancy architecture, and a single-bit data redundancy, a multi-bit data redundancy and an information redundancy retransmission mechanism are adopted for diagnosis and verification of the double-channel redundancy architecture system. The dual-channel redundancy architecture system is characterized in that a layer of redundancy architecture is added on the basis of the single redundancy system, the problem that diagnosis channel faults possibly occur and are mistakenly regarded as normal channel faults to cause misjudgment is solved, a channel A is a single redundancy system, a channel B is used as a redundancy channel, the channel B and the channel A are completely consistent, and the dual-channel redundancy architecture is formed together.
As shown in fig. 4, the diagnostic process of the dual-channel redundancy architecture system data transmission control process includes steps S211 to S216:
s211, judging whether the channel A communicates normally or not by judging the channel state identification bit, if so, closing the corresponding fault channel, and informing the channel B of the fault state; if the channel A communicates normally, the channel A prepares to send data, copies the data to be sent to a part, and transmits the data to the channel B;
s212, judging whether the channel B communicates normally or not by judging the channel state identification bit, if so, closing the corresponding fault channel, and informing the channel A of the fault state; if the channel B communicates normally, the channel B carries out data framing to obtain transmission data, and the framing process comprises adding a one-bit data redundancy, a multi-bit data redundancy and an information redundancy retransmission mechanism;
s213, carrying out data framing on data to be transmitted by a channel A to obtain transmitted data, wherein the framing process comprises adding a one-bit data redundancy, a multi-bit data redundancy and an information redundancy retransmission mechanism;
s214, the channel A and the channel B control the communication control module to simultaneously send data to the slave equipment through timing pulse signals among the channels, and the slave equipment judges which channel has a fault through judging channel state identification bits in the data and discards the corresponding fault channel data;
s215, when data is transmitted, diagnostic channels in the channel A and the channel B read back the transmitted data;
s216, the diagnosis control modules of the channel A and the channel B respectively carry out comparison diagnosis on the respective sending data and the readback data, if the sending data and the readback data of the channel A or the channel B are inconsistent to indicate that the corresponding channel fails, the channel state bit of the next frame data of the channel A and the channel B is identified, and the steps S211-S216 are repeated.
As shown in fig. 5, the diagnostic process of the data reception control process of the dual-channel redundancy architecture system includes steps S221 to S223:
s221, the normal communication channel of the channel A, the normal communication channel of the diagnosis channel and the normal communication channel of the channel B, and the diagnosis channel simultaneously receive the data uploaded from the equipment;
s222, carrying out 2oo4 voting diagnosis on four groups of data received by the channel A and the channel B, wherein the voting logic is as follows: judging whether the voting result has the condition that two or more data are consistent, if so, taking the consistent value of the data as normal data; if the judgment result is negative, indicating that the channel has faults;
s223, outputting the normal data after 2oo4 voting to other modules, reporting the voting diagnosis state, adding the channel state identification to the channel state identification bit of the next frame transmission data, and informing the slave device whether the communication channel has faults.
The functions of the dual-channel redundancy architecture system include the verification means, the diagnosis means and the judgment logic in the single-channel redundancy architecture and the single-channel redundancy architecture. The reliability and the usability of the system are greatly improved, the system can still normally operate even when certain faults occur to the system, the system is ensured to have enough time to complete the task stage being executed, and meanwhile, the fault state information is reported in time.
In order to ensure that the communication control module and the diagnosis control module in the channel A or the channel B can synchronously process data, the communication control module generates a timing pulse signal through a timer and sends the timing pulse signal to the diagnosis control module, and the diagnosis control module carries out flow control according to the received timing pulse signal and synchronously processes the data through the communication control module.
It can be understood that by the serial communication interface diagnosis system with the multiple redundancy architecture, the system architecture is clear and simple, higher safety and reliability are realized with lower cost, and main control logic is realized by software and can be realized in different processor systems; the system can be flexibly configured according to specific application requirements, can be configured into single channel redundancy, single channel redundancy and double channel redundancy, and can be applied to scenes with different requirements; through a series of diagnosis and redundancy modes, the diagnosis coverage rate of the system is greatly improved, the diagnosis coverage rate of the system can reach more than 99%, meanwhile, the reliability and the usability of the system are greatly improved, the system can still normally operate even if certain faults occur in the system, the system is ensured to have enough time to complete the task stage in execution, and meanwhile, fault state information is timely reported.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (9)
1. The serial communication interface diagnosis system with the multiple redundancy architecture is characterized by comprising two identical serial communication channels, namely a channel A and a channel B, and slave equipment, wherein the slave equipment is respectively connected with the channel A and the channel B, each channel comprises a communication control module, a diagnosis control module, an RS485 interface chip 1, an RS485 interface chip 2 and analog control switches S1, S2, S3 and S4, and the communication control module of the channel A is connected with the communication control module of the channel B;
the communication control module is respectively connected with the diagnosis control module and the RS485 interface chip 1 to realize communication function logic control;
the diagnosis control module is respectively connected with the communication control module and the RS485 interface chip 2 to realize the logic control of the diagnosis function;
the RS485 interface chip 1 is connected with the RS485 interface chip 2 to realize the conversion between TTL level and RS485 level;
the control switch is arranged between the RS485 interface chip 1 and the RS485 interface chip 2, wherein the control switches S1 and S2 are connected with the interface chip 1, and the control switches S3 and S4 are connected with the interface chip 2 to realize the connection and disconnection of an output passage of the RS485 interface chip; wherein, in the channel A and the channel B, the communication control module is connected with the interface chip 1 in series, and the diagnosis control module is connected with the interface chip 2 in series to form a parallel loop;
when the control switches S1, S2 and S3, S4 of the channel A are closed and the channel B is not working, the system is single channel communication, a single-bit data redundancy, multi-bit data redundancy and information redundancy retransmission mechanism is adopted for the single channel communication system, the diagnosis control module compares and checks two continuous frames of data with completely consistent received data field content, the checking modes of the two frames of data are different, the first frame of data adopts CRC check with odd checksum polynomial of 0xBAAD, and the second frame of data adopts CRC with even checksum polynomial of 0xC 86C.
2. A serial communication interface diagnosis method of multiple redundancy architecture is applied to the serial communication interface diagnosis system of claim 1, and is characterized in that when control switches S1, S2 of a channel A are closed and S3, S4 are opened, and meanwhile, the channel B does not work, the system is single-channel communication, a single-channel communication system adopts a one-bit data redundancy mechanism, a multi-bit data redundancy mechanism and an information redundancy retransmission mechanism, the diagnosis control module compares and checks two continuous frames of data with completely consistent received data field content, the check modes of the two frames of data are different, a CRC check with an odd checksum polynomial of 0xBAAD is adopted for a first frame of data, and a CRC check with an even checksum polynomial of 0xC86C is adopted for a second frame of data.
3. The method according to claim 2, wherein when the control switches S1, S2, S3, S4 of the channel a are closed and the channel B is not operating, the system is a single-channel redundancy architecture, and a single-channel redundancy architecture system is provided with a single-bit data redundancy, a multi-bit data redundancy and an information redundancy retransmission mechanism, and the diagnostic process of the serial communication interface of the single-channel redundancy architecture system includes a data transmission stage and a data reception stage.
4. A serial communication interface diagnostic method of multiple redundancy architecture according to claim 3, wherein the diagnostic procedure for the data transmission phase comprises the steps of:
s111, a communication control module of the channel A sends framing data to a data receiving port and a diagnosis control module of the RS485 interface chip 1;
s112, the diagnosis control module receives the framing data; the RS485 interface chip 1 receives the framing data, converts TTL level into RS485 level and outputs an RS485 signal;
s113, the RS485 interface chip 2 receives the RS485 signal for processing and outputs stoping data;
s114, the diagnosis control module receives the stoping data, compares the stoping data with the framing data, and if the framing data is different from the stoping data, indicates that a normal communication channel fails;
s115, when the diagnosis control module diagnoses that the normal communication channel has faults, the control switches S1 and S2 are disconnected, the fault channel is isolated and cut off, the diagnosis channel is used as a normal data sending module instead of the normal communication channel, and the diagnosis control module is used for transmitting framing data through the RS485 interface chip 2.
5. A serial communication interface diagnostic method of multiple redundancy architecture according to claim 3, wherein the diagnostic procedure for the data reception phase comprises the steps of:
s121, the communication control module receives data input from equipment through the RS485 interface chip 1 from a normal communication channel, and meanwhile, the diagnosis control module receives data input from the equipment through the RS485 interface chip 2 from a diagnosis channel;
s122, the communication control module analyzes the input data and outputs analysis data;
s123, the diagnosis control module receives the analysis data, compares the analysis data with data input from equipment, and if the analysis data and the data are different, indicates that a receiving channel fails, wherein the receiving channel represents at least one of a diagnosis channel and a normal communication channel;
and S124, the diagnosis control module performs diagnosis and verification on the receiving channel by combining a one-bit data redundancy mechanism, a multi-bit data redundancy mechanism and an information redundancy retransmission mechanism, when a normal communication channel is diagnosed to have faults, the control switches S1 and S2 are opened, the control switches S3 and S4 are closed, the fault channel is isolated and cut off, and the diagnosis channel is used for data transceiving instead of the normal communication channel.
6. The method for diagnosing a serial communication interface with multiple redundancy architecture according to claim 2, wherein when the control switches S1, S2, S3, S4 of the channel a and the channel B are all closed, the system is a dual-channel redundancy architecture, a single-bit data redundancy, a multi-bit data redundancy and an information redundancy retransmission mechanism are adopted for the dual-channel redundancy architecture system, and the diagnostic process for the serial communication interface of the dual-channel redundancy architecture system comprises a data transmission control process and a data reception control process.
7. The method for diagnosing a serial communication interface with multiple redundancy architecture as recited in claim 6, wherein the diagnosing process for the data transmission control process comprises the steps of:
s211, judging whether the channel A communicates normally or not by judging the channel state identification bit, if so, closing the corresponding fault channel, and informing the channel B of the fault state; if the channel A communicates normally, the channel A prepares to send data, copies the data to be sent to a part, and transmits the data to the channel B;
s212, judging whether the channel B communicates normally or not by judging the channel state identification bit, if so, closing the corresponding fault channel, and informing the channel A of the fault state; if the channel B communicates normally, the channel B carries out data framing to obtain transmission data, and the framing process comprises a one-bit data redundancy part, a multi-bit data redundancy part and an information redundancy adding retransmission mechanism part;
s213, carrying out data framing on data to be transmitted by a channel A to obtain transmitted data, wherein the framing process comprises a one-bit data redundancy part, a multi-bit data redundancy part and an information redundancy adding retransmission mechanism part;
s214, the channel A and the channel B control the communication control module to simultaneously send data to the slave equipment through timing pulse signals among the channels, and the slave equipment judges which channel has a fault through judging channel state identification bits in the data and discards the corresponding fault channel data;
s215, when data is transmitted, diagnostic channels in the channel A and the channel B read back the transmitted data;
s216, the diagnosis control modules of the channel A and the channel B respectively carry out comparison diagnosis on the respective sending data and the readback data, if the sending data and the readback data of the channel A or the channel B are inconsistent to indicate that the corresponding channel fails, the channel state bit of the next frame data of the channel A and the channel B is identified, and the steps S211-S216 are repeated.
8. The method for diagnosing a serial communication interface with multiple redundancy architecture as recited in claim 6, wherein the process of diagnosing the data receiving control process comprises the steps of:
s221, the normal communication channel of the channel A, the normal communication channel of the diagnosis channel and the normal communication channel of the channel B, and the diagnosis channel simultaneously receive the data uploaded from the equipment;
s222, carrying out 2oo4 voting diagnosis on four groups of data received by the channel A and the channel B, wherein the voting logic is as follows: if the voting result is that two or more data are consistent, taking the consistent value of the data as normal data; if more than two data are inconsistent, a channel is indicated to have faults;
s223, outputting the normal data after 2oo4 voting to other modules, reporting the voting diagnosis state, adding the channel state identification to the channel state identification bit of the next frame transmission data, and informing the slave device whether the communication channel has faults.
9. The method for diagnosing a serial communication interface with multiple redundancy architecture according to any one of claims 3 to 8, wherein the communication control module generates a timing pulse signal by a timer and transmits the timing pulse signal to the diagnostic control module, and the diagnostic control module performs data processing synchronously.
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| CN110677333B (en) * | 2019-09-25 | 2021-07-23 | 国网山东省电力公司枣庄供电公司 | Intelligent conversion device for 485 interface of electric meter |
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Citations (47)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0043432A2 (en) * | 1980-07-03 | 1982-01-13 | International Business Machines Corporation | Error detecting device for synchronous data transmission system |
| US4672529A (en) * | 1984-10-26 | 1987-06-09 | Autech Partners Ltd. | Self contained data acquisition apparatus and system |
| US5907671A (en) * | 1996-09-23 | 1999-05-25 | International Business Machines Corporation | Fault tolerant system based on voting |
| JP2004252963A (en) * | 2003-01-31 | 2004-09-09 | Denso Corp | Method for diagnosing fault of communication network for vehicle |
| JP2004310779A (en) * | 2003-04-08 | 2004-11-04 | Fisher Rosemount Syst Inc | Voting logic block having operation override and maintenance override in process control system |
| WO2006096879A1 (en) * | 2005-03-09 | 2006-09-14 | Sun Microsystems, Inc. | System and method for tolerating communication lane failures |
| JP2006306166A (en) * | 2005-04-26 | 2006-11-09 | Nissan Motor Co Ltd | Redundant system and its fault diagnosis method |
| KR100690274B1 (en) * | 2005-09-12 | 2007-03-09 | 삼성전자주식회사 | Cyclic redundancy check device and communication system comprising the same for multi-channel serial communication |
| EP1967929A2 (en) * | 2007-03-05 | 2008-09-10 | Honeywell International Inc. | An intelligent aircraft secondary power distribution system that facilitates condition based maintenance |
| CN101609329A (en) * | 2008-06-19 | 2009-12-23 | 北京航空航天大学 | A kind of high-performance tri-redundancy steering engine based on single-channel dual-processor structure |
| JP2010165136A (en) * | 2009-01-15 | 2010-07-29 | Yokogawa Electric Corp | Redundancy control device |
| US7870299B1 (en) * | 2008-02-06 | 2011-01-11 | Westinghouse Electric Co Llc | Advanced logic system |
| CN102096401A (en) * | 2010-12-22 | 2011-06-15 | 北京昊图科技有限公司 | Redundant and fault-tolerant safety instrument control system based on fieldbus and ARM (advanced RISC machines) |
| JP2011248625A (en) * | 2010-05-27 | 2011-12-08 | Hitachi Ltd | Failure diagnosis circuit and failure diagnosis method of control device |
| CN102841828A (en) * | 2011-06-21 | 2012-12-26 | 西屋电气有限责任公司 | Fault detection and reduction in logic circuit |
| CN102968109A (en) * | 2012-12-03 | 2013-03-13 | 西南大学 | Safety instrument system based on D-S (Dempster/Shafer) evidence theory |
| CN104158624A (en) * | 2014-08-06 | 2014-11-19 | 固安信通信号技术股份有限公司 | Redundancy two-out-of-two decoding control device for BTM (Balise Transmission Module) system and redundancy two-out-of-two decoding method |
| CN104731007A (en) * | 2015-03-13 | 2015-06-24 | 沈阳中科博微自动化技术有限公司 | Backboard communication assembly and communication method for function security PLC |
| CN104849527A (en) * | 2015-03-13 | 2015-08-19 | 沈阳中科博微自动化技术有限公司 | Function-safety-oriented redundant current input module |
| KR101552852B1 (en) * | 2014-12-15 | 2015-09-14 | 와이피피 주식회사 | Triple redundant digital protective relay and operating method thereof |
| EP2917836A1 (en) * | 2012-11-07 | 2015-09-16 | ABB Technology Ltd. | Redundancy device unit and method for determining fault in industrial control system, industrial control system and industrial system comprising redundancy device unit |
| CN105629797A (en) * | 2016-03-29 | 2016-06-01 | 杭州和利时自动化有限公司 | Output control method and system for N output channels |
| CN106909137A (en) * | 2017-02-27 | 2017-06-30 | 中国核动力研究设计院 | A kind of diagnosis coverage rate analog quantity isolation distributor high |
| CN108549357A (en) * | 2018-03-26 | 2018-09-18 | 湖北韵生航天科技有限公司 | A kind of commercial seat dcs of high row |
| EP3376330A1 (en) * | 2017-03-17 | 2018-09-19 | TTTech Computertechnik AG | Fault-tolerant method for detecting faults in an electronic system for controlling a controlled object |
| EP3422125A1 (en) * | 2017-06-29 | 2019-01-02 | The Boeing Company | Fault coverage for multiple failures in redundant systems |
| CN109407656A (en) * | 2018-12-29 | 2019-03-01 | 深圳市道通科技股份有限公司 | The scan method and its automotive diagnostic installation of electronic control unit in vehicle |
| CN109428775A (en) * | 2017-08-23 | 2019-03-05 | 中国兵器装备集团自动化研究所 | A kind of internet communicating monitoring equipment main control computer |
| CN109617801A (en) * | 2018-12-12 | 2019-04-12 | 上海航天控制技术研究所 | A kind of high-torque flywheel two-way redundant CAN bus reliable communication method and device |
| CN109739694A (en) * | 2019-01-03 | 2019-05-10 | 中国兵器装备集团自动化研究所 | A kind of two-shipper arbitrary switch-over system and method |
| CN110380916A (en) * | 2019-08-26 | 2019-10-25 | 上海航天测控通信研究所 | The Ethernet crossing redundancy standby system and method adaptively switched |
| CN110376931A (en) * | 2018-04-13 | 2019-10-25 | 沈阳中科博微科技股份有限公司 | A kind of functional safety current output module of high diagnosis coverage rate |
| CN110398951A (en) * | 2019-08-14 | 2019-11-01 | 中车大连机车车辆有限公司 | The state and redundancy display methods and locomotive of Locomotive remote input/output module |
| CN110687893A (en) * | 2019-10-18 | 2020-01-14 | 江苏核电有限公司 | Redundant radiation monitoring upper-layer system |
| CN110784263A (en) * | 2019-11-05 | 2020-02-11 | 中航华东光电（上海）有限公司 | Optical fiber transmission device with redundancy function based on FPGA |
| CN110794817A (en) * | 2019-12-03 | 2020-02-14 | 中国兵器装备集团自动化研究所 | Fault safety type current output channel diagnosis system and method thereof |
| CN110837233A (en) * | 2018-08-16 | 2020-02-25 | 舍弗勒技术股份两合公司 | Safety control system for improving functional safety |
| CN110865587A (en) * | 2019-12-05 | 2020-03-06 | 中车大连电力牵引研发中心有限公司 | Input/output device based on discrete high-speed redundancy switching |
| CN210270871U (en) * | 2019-07-11 | 2020-04-07 | 中国人民解放军总参谋部第六十研究所 | Redundant fault-tolerant computer serial port gating device |
| CN111147510A (en) * | 2019-12-31 | 2020-05-12 | 中国兵器装备集团自动化研究所 | Data acquisition system and method based on SOA reflection factory architecture |
| CN111159123A (en) * | 2019-12-30 | 2020-05-15 | 中国兵器装备集团自动化研究所 | Embedded reliable parameter storage file system and method |
| CN111542897A (en) * | 2017-12-28 | 2020-08-14 | 爱惜康有限责任公司 | Data processing and prioritization in cloud analytics networks |
| CN111538316A (en) * | 2020-05-21 | 2020-08-14 | 北京航空航天大学 | Performance-based fault diagnosis method and system for actuating mechanism of closed-loop control system |
| CN111624916A (en) * | 2020-06-02 | 2020-09-04 | 徐州重型机械有限公司 | Functional safety type digital quantity input acquisition circuit and acquisition and diagnosis method thereof |
| CN111915869A (en) * | 2020-07-14 | 2020-11-10 | 上海空间电源研究所 | High-reliability RS422 serial port communication circuit device |
| CN112034811A (en) * | 2019-06-03 | 2020-12-04 | 现代自动车株式会社 | Controller diagnostic device and method |
| CN212098886U (en) * | 2020-05-15 | 2020-12-08 | 北京全路通信信号研究设计院集团有限公司 | Redundant structure track circuit reader |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6427219B1 (en) * | 1998-06-24 | 2002-07-30 | Conexant Systems, Inc. | Method and apparatus for detecting and correcting errors using cyclic redundancy check |
| US7391755B2 (en) * | 2002-09-30 | 2008-06-24 | Lucent Technologies Inc. | Signaling and control mechanisms in MIMO harq schemes for wireless communication systems |
| DE10394283B4 (en) * | 2003-10-10 | 2015-07-09 | Mitsubishi Denki K.K. | Control system using serial communication |
| US7260501B2 (en) * | 2004-04-21 | 2007-08-21 | University Of Connecticut | Intelligent model-based diagnostics for system monitoring, diagnosis and maintenance |
| US8421587B2 (en) * | 2007-04-26 | 2013-04-16 | Freescale Semiconductor, Inc. | Diagnosis for mixed signal device for use in a distributed system |
| US10229016B2 (en) * | 2017-06-01 | 2019-03-12 | The University Of Akron | Redundant computer system utilizing comparison diagnostics and voting techniques |
| US10955805B2 (en) * | 2018-10-09 | 2021-03-23 | Intel Corporation | SoC architecture to integrate with one out of two diagnostics platforms |
-
2020
- 2020-12-16 CN CN202011485069.XA patent/CN112526979B/en active Active
Patent Citations (48)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0043432A2 (en) * | 1980-07-03 | 1982-01-13 | International Business Machines Corporation | Error detecting device for synchronous data transmission system |
| US4672529A (en) * | 1984-10-26 | 1987-06-09 | Autech Partners Ltd. | Self contained data acquisition apparatus and system |
| US5907671A (en) * | 1996-09-23 | 1999-05-25 | International Business Machines Corporation | Fault tolerant system based on voting |
| JP2004252963A (en) * | 2003-01-31 | 2004-09-09 | Denso Corp | Method for diagnosing fault of communication network for vehicle |
| JP2004310779A (en) * | 2003-04-08 | 2004-11-04 | Fisher Rosemount Syst Inc | Voting logic block having operation override and maintenance override in process control system |
| WO2006096879A1 (en) * | 2005-03-09 | 2006-09-14 | Sun Microsystems, Inc. | System and method for tolerating communication lane failures |
| JP2006306166A (en) * | 2005-04-26 | 2006-11-09 | Nissan Motor Co Ltd | Redundant system and its fault diagnosis method |
| KR100690274B1 (en) * | 2005-09-12 | 2007-03-09 | 삼성전자주식회사 | Cyclic redundancy check device and communication system comprising the same for multi-channel serial communication |
| CN1933605A (en) * | 2005-09-12 | 2007-03-21 | 三星电子株式会社 | Cyclic redundancy check circuit and communication system having the same for multi-channel communication |
| EP1967929A2 (en) * | 2007-03-05 | 2008-09-10 | Honeywell International Inc. | An intelligent aircraft secondary power distribution system that facilitates condition based maintenance |
| US7870299B1 (en) * | 2008-02-06 | 2011-01-11 | Westinghouse Electric Co Llc | Advanced logic system |
| CN101609329A (en) * | 2008-06-19 | 2009-12-23 | 北京航空航天大学 | A kind of high-performance tri-redundancy steering engine based on single-channel dual-processor structure |
| JP2010165136A (en) * | 2009-01-15 | 2010-07-29 | Yokogawa Electric Corp | Redundancy control device |
| JP2011248625A (en) * | 2010-05-27 | 2011-12-08 | Hitachi Ltd | Failure diagnosis circuit and failure diagnosis method of control device |
| CN102096401A (en) * | 2010-12-22 | 2011-06-15 | 北京昊图科技有限公司 | Redundant and fault-tolerant safety instrument control system based on fieldbus and ARM (advanced RISC machines) |
| CN102841828A (en) * | 2011-06-21 | 2012-12-26 | 西屋电气有限责任公司 | Fault detection and reduction in logic circuit |
| EP2917836A1 (en) * | 2012-11-07 | 2015-09-16 | ABB Technology Ltd. | Redundancy device unit and method for determining fault in industrial control system, industrial control system and industrial system comprising redundancy device unit |
| CN102968109A (en) * | 2012-12-03 | 2013-03-13 | 西南大学 | Safety instrument system based on D-S (Dempster/Shafer) evidence theory |
| CN104158624A (en) * | 2014-08-06 | 2014-11-19 | 固安信通信号技术股份有限公司 | Redundancy two-out-of-two decoding control device for BTM (Balise Transmission Module) system and redundancy two-out-of-two decoding method |
| KR101552852B1 (en) * | 2014-12-15 | 2015-09-14 | 와이피피 주식회사 | Triple redundant digital protective relay and operating method thereof |
| CN104849527A (en) * | 2015-03-13 | 2015-08-19 | 沈阳中科博微自动化技术有限公司 | Function-safety-oriented redundant current input module |
| CN104731007A (en) * | 2015-03-13 | 2015-06-24 | 沈阳中科博微自动化技术有限公司 | Backboard communication assembly and communication method for function security PLC |
| CN105629797A (en) * | 2016-03-29 | 2016-06-01 | 杭州和利时自动化有限公司 | Output control method and system for N output channels |
| CN106909137A (en) * | 2017-02-27 | 2017-06-30 | 中国核动力研究设计院 | A kind of diagnosis coverage rate analog quantity isolation distributor high |
| EP3376330A1 (en) * | 2017-03-17 | 2018-09-19 | TTTech Computertechnik AG | Fault-tolerant method for detecting faults in an electronic system for controlling a controlled object |
| EP3422125A1 (en) * | 2017-06-29 | 2019-01-02 | The Boeing Company | Fault coverage for multiple failures in redundant systems |
| CN109428775A (en) * | 2017-08-23 | 2019-03-05 | 中国兵器装备集团自动化研究所 | A kind of internet communicating monitoring equipment main control computer |
| CN111542897A (en) * | 2017-12-28 | 2020-08-14 | 爱惜康有限责任公司 | Data processing and prioritization in cloud analytics networks |
| CN108549357A (en) * | 2018-03-26 | 2018-09-18 | 湖北韵生航天科技有限公司 | A kind of commercial seat dcs of high row |
| CN110376931A (en) * | 2018-04-13 | 2019-10-25 | 沈阳中科博微科技股份有限公司 | A kind of functional safety current output module of high diagnosis coverage rate |
| CN110837233A (en) * | 2018-08-16 | 2020-02-25 | 舍弗勒技术股份两合公司 | Safety control system for improving functional safety |
| CN109617801A (en) * | 2018-12-12 | 2019-04-12 | 上海航天控制技术研究所 | A kind of high-torque flywheel two-way redundant CAN bus reliable communication method and device |
| CN109407656A (en) * | 2018-12-29 | 2019-03-01 | 深圳市道通科技股份有限公司 | The scan method and its automotive diagnostic installation of electronic control unit in vehicle |
| CN109739694A (en) * | 2019-01-03 | 2019-05-10 | 中国兵器装备集团自动化研究所 | A kind of two-shipper arbitrary switch-over system and method |
| CN112034811A (en) * | 2019-06-03 | 2020-12-04 | 现代自动车株式会社 | Controller diagnostic device and method |
| CN210270871U (en) * | 2019-07-11 | 2020-04-07 | 中国人民解放军总参谋部第六十研究所 | Redundant fault-tolerant computer serial port gating device |
| CN110398951A (en) * | 2019-08-14 | 2019-11-01 | 中车大连机车车辆有限公司 | The state and redundancy display methods and locomotive of Locomotive remote input/output module |
| CN110380916A (en) * | 2019-08-26 | 2019-10-25 | 上海航天测控通信研究所 | The Ethernet crossing redundancy standby system and method adaptively switched |
| CN110687893A (en) * | 2019-10-18 | 2020-01-14 | 江苏核电有限公司 | Redundant radiation monitoring upper-layer system |
| CN110784263A (en) * | 2019-11-05 | 2020-02-11 | 中航华东光电（上海）有限公司 | Optical fiber transmission device with redundancy function based on FPGA |
| CN110794817A (en) * | 2019-12-03 | 2020-02-14 | 中国兵器装备集团自动化研究所 | Fault safety type current output channel diagnosis system and method thereof |
| CN110865587A (en) * | 2019-12-05 | 2020-03-06 | 中车大连电力牵引研发中心有限公司 | Input/output device based on discrete high-speed redundancy switching |
| CN111159123A (en) * | 2019-12-30 | 2020-05-15 | 中国兵器装备集团自动化研究所 | Embedded reliable parameter storage file system and method |
| CN111147510A (en) * | 2019-12-31 | 2020-05-12 | 中国兵器装备集团自动化研究所 | Data acquisition system and method based on SOA reflection factory architecture |
| CN212098886U (en) * | 2020-05-15 | 2020-12-08 | 北京全路通信信号研究设计院集团有限公司 | Redundant structure track circuit reader |
| CN111538316A (en) * | 2020-05-21 | 2020-08-14 | 北京航空航天大学 | Performance-based fault diagnosis method and system for actuating mechanism of closed-loop control system |
| CN111624916A (en) * | 2020-06-02 | 2020-09-04 | 徐州重型机械有限公司 | Functional safety type digital quantity input acquisition circuit and acquisition and diagnosis method thereof |
| CN111915869A (en) * | 2020-07-14 | 2020-11-10 | 上海空间电源研究所 | High-reliability RS422 serial port communication circuit device |
Non-Patent Citations (11)
| Title |
|---|
| Kohler, A.Fault-Tolerant Architecture and Deflection Routing for Degradable NoC Switches.2009 3RD ACM/IEEE INTERNATIONAL SYMPOSIUM ON NETWORKS-ON-CHIP.2009,22-31. * |
| Lee, MH.Localized detection of faults in wireless sensor networks.10TH INTERNATIONAL CONFERENCE ON ADVANCED COMMUNICATION TECHNOLOGY.2008,637-641. * |
| Li, Jie.Scheme for periodical concurrent fault detection in parallel CRC circuits.IET COMPUTERS AND DIGITAL TECHNIQUES.2020,80-85. * |
| Preault, C.Real Time Redundancy-Based Approach to Robot-Patient Safe Enhancement: Application to Doppler Sonography.MECHANISM DESIGN FOR ROBOTICS.2019,174-183. * |
| Zeng Qiufen.Line redundancy of train communication network.Computer Measurement & Control.2009,1199-1200. * |
| 吕子雷.广州地铁3号线列车通信网络诊断机制研究.铁道车辆.2020,32-34+5. * |
| 张振华.串行通信测试系统研究与设计.硅谷.2012,68-70. * |
| 李彦平.一种可重构式安全级控制系统设计.兵工自动化.2017,27-30. * |
| 梁素英.整流所自动化监控系统的应用.氯碱工业.2009,5-6. * |
| 王冬冬.基于nRF24LE1的无线表决器设计与实现.计算机应用.2017,309-312. * |
| 罗兆荣.电动执行机构用现场总线冗余控制技术研究.电工技术.2019,7-8+14. * |
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