CN112526979A - Serial communication interface diagnosis system and method of multiple redundancy architecture - Google Patents
Serial communication interface diagnosis system and method of multiple redundancy architecture Download PDFInfo
- Publication number
- CN112526979A CN112526979A CN202011485069.XA CN202011485069A CN112526979A CN 112526979 A CN112526979 A CN 112526979A CN 202011485069 A CN202011485069 A CN 202011485069A CN 112526979 A CN112526979 A CN 112526979A
- Authority
- CN
- China
- Prior art keywords
- channel
- data
- diagnosis
- redundancy
- control module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The invention discloses a serial communication interface diagnosis system of a multiple redundancy architecture, which comprises a channel A and a channel B which are the same, 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, 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 the 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 one bit of a single-path data line is used for data transmission, 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 generally adopted in the technical field of industrial control at present is an RS485 interface, the RS485 standard only specifies a physical layer in an OSI specification, only one electrical standard is adopted, and a connector, a communication protocol and the like are not specified. 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, a receiving end judges corresponding logic '1' or '0' according to the difference value of the two signal lines, the differential balance circuit can greatly inhibit noise and different influences of ground planes, has strong anti-jamming capability and long transmission distance, and supports a point-to-multipoint communication mode. For the RS485 standard interface, the most well-known communication protocol in the industry at present is modbus developed by modicon corporation, and the modbus communication protocol follows master-slave communication steps, one of which is master equipment, and the other of which is slave equipment, and the master equipment 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 one-bit data redundancy and multi-bit data redundancy, wherein the one-bit data redundancy adopts a parity check mode, the check is carried out according to the number of '1' in a binary code of transmission data, the odd check is adopted, the even check is adopted, the parity check is generally carried out once aiming at each byte, namely 8-bit data, in the serial communication interface, and a check bit is added behind a data bit; the multi-bit data redundancy adopts a CRC (cyclic redundancy check) mode, a check code with a certain length is added behind a data frame to be transmitted to generate a new data frame to be transmitted to a receiving end, the data receiving end calculates according to an agreed CRC data polynomial, the calculated CRC result is compared with the received CRC result, if the calculated CRC result is consistent with the received CRC result, the CRC is correct, and a general serial communication interface adopts 16-bit polynomial CRC for checking.
However, in the prior art, the two communication diagnosis modes adopted are low in diagnosis coverage rate, a one-bit data redundancy mode is adopted, the diagnosis coverage rate can only reach 60% at most, for common parity check, the situation that double-bit errors occur in data bits cannot be diagnosed, and a multi-bit data redundancy mode is adopted, the diagnosis coverage rate can only reach 90% at most. The CRC check can detect 100% of all odd errors and some burst errors, the capability of detecting burst errors is related to the order of the generator polynomial of the CRC check, and the higher the order, the lower the probability of erroneous judgment, but the higher the order of the generator polynomial of the CRC check, the higher the calculation capability of the CRC check is, and the influence on the performance of other parts is caused by the doubled requirement of the calculation capability of the CRC check.
In addition, in the prior art, after a serial communication fault is diagnosed, the fault cannot be isolated in time, so that information transmission is broken, no extra redundancy means is used for transmitting effective data, and the safety function execution and normal operation of the whole system can be influenced in the technical field of industrial control with severe requirements on data stability and reliability.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a serial communication interface diagnosis system and method of a multiple redundancy architecture, the reliability and the diagnosis coverage rate of the serial communication interface are improved by means of the multiple redundancy architecture, the diagnosis technology, software logic control and the like, and after the serial communication interface fails, the system can automatically isolate the failed interface and switch the redundant communication interface to carry out effective data transmission.
The invention is realized by the following technical scheme:
in the prior art, the diagnostic coverage rate of two communication diagnostic modes, namely one-bit data redundancy and multi-bit data redundancy, of a serial communication interface is not high, and after a serial communication fault is diagnosed in the prior art, the fault cannot be isolated in time, so that information transmission is broken, no extra redundancy means is used for transmitting effective data, the stability and reliability of the system are not high, and the safety function execution and normal operation of the whole system are influenced. The invention relates to a serial communication interface diagnosis system with a multiple redundancy architecture, which comprises a channel A and a channel B which are the same, 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 diagnosis function logic control;
the RS485 interface chip 1 and the RS485 interface chip 2 are connected 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 connection and disconnection of the output channel of the RS485 interface chip.
The system architecture configuration is carried out according to specific use conditions, 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, a single-channel communication system adopts a one-bit data redundancy, multi-bit data redundancy and information redundancy retransmission mechanism to carry out diagnosis and check, and the problem that the diagnosis coverage rate is not high in the prior art is solved; the diagnosis control module compares and checks two continuous frames of data with completely consistent received data field contents, the two frames of data are checked in different modes, for example, the first frame of data is subjected to CRC check with odd check sum polynomial of 0xBAAD, the second frame of data is subjected to CRC check with even check sum 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 modes, and the diagnosis coverage rate of a channel can be improved to 99% through increasing an information redundancy retransmission mechanism.
When the control switches S1, S2, S3 and S4 of the channel A are closed, the diagnosis control module works, and the channel B does not work, the system is a single-channel redundancy architecture, and a single-bit data redundancy, multi-bit data redundancy and information redundancy retransmission mechanism is adopted for diagnosis and check of the single-channel redundancy architecture system.
The diagnosis process of the data transmission stage of the single-channel redundancy architecture system specifically comprises the following steps:
s111, the communication control module of the channel A sends the group frame 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 the TTL level into an RS485 level and outputs an RS485 signal;
s113, the RS485 interface chip 2 receives the RS485 signal for processing and outputs recovery data;
s114, the diagnosis control module receives the recovered data, compares the recovered data with the framing data, and if the framing data is different from the recovered data, indicates that a normal communication channel has a fault;
and S115, when the diagnosis control module diagnoses that the normal communication channel has a fault, the control switches S1 and S2 are switched off, the fault channel is isolated and cut off, the diagnosis control module changes the function at the moment and does not have the diagnosis function, the diagnosis control module serves as a normal data sending module, and the diagnosis control module is used for transmitting 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 the equipment through the RS485 interface chip 1 from the normal communication channel, and meanwhile, the diagnosis control module receives the data input from the equipment through the RS485 interface chip 2 from the diagnosis channel;
s122, the communication control module analyzes the input data and outputs analyzed data;
s123, the diagnosis control module receives the analysis data, compares the analysis data with data input from equipment, and if the two data are different, indicates that a receiving channel has a fault, wherein the receiving channel represents at least one of a diagnosis channel and a normal communication channel;
and S124, the diagnosis control module carries out diagnosis and check on the receiving channel by combining a bit data redundancy mechanism, a multi-bit data redundancy mechanism and an information redundancy retransmission mechanism, and controls the switches S1 and S2 to be switched off, S3 and S4 to be switched on when a normal communication channel is diagnosed to have a fault, so as to isolate and cut off the fault channel and use the diagnosis channel to replace the normal communication channel for data transceiving.
For a single-channel redundancy architecture system, when a receiving channel fails, whether a diagnostic channel or a normal channel has a problem cannot be determined through data comparison, only one of the diagnostic channel and the normal communication channel is known to have a problem, and at the moment, a single-bit data redundancy, multi-bit data redundancy and information redundancy retransmission mechanism is adopted to carry out diagnostic check to jointly determine which channel fails. The diagnosis control module, the redundancy RS485 interface chip and the redundancy control analog switch are added, so that the diagnosis coverage rate of the system is high, the hardware redundancy is realized, the fault can be isolated in time after the fault occurs, and the effective transmission of data is ensured.
When the control switches S1, S2, S3 and S4 of the channel A and the channel B are closed, the system is a dual-channel redundancy architecture at the moment, and a single-bit data redundancy, multi-bit data redundancy and information redundancy retransmission mechanism is adopted for diagnosis and check of the dual-channel redundancy architecture system. The double-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 misjudgment is caused by the fact that a diagnosis channel fault is possibly generated and the diagnosis channel fault is mistaken for a normal channel fault is solved, a channel A is the single redundancy system, and a channel B and the channel A are completely consistent and jointly form the double-channel redundancy architecture system.
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 is in normal communication or not by judging the channel state identification bit, if so, closing a corresponding fault channel, and informing the channel B of the fault state; if the channel A is in normal communication, the channel A prepares to send data, copies one copy of the data to be sent and transmits the copy to the channel B;
s212, judging whether the channel B is in normal communication 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 is in normal communication, the channel B performs data framing to obtain sending data, and the framing process comprises adding a one-bit data redundancy, a multi-bit data redundancy and an information redundancy retransmission mechanism;
s213, the channel A frames the data to be sent to obtain the sending data, and 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, the slave equipment judges which channel fails by judging a channel state identification bit in the data, and discards corresponding failed channel data;
s215, when data is sent, the diagnostic channels in the channel A and the channel B read back the sent data;
s216, the diagnosis control modules of the channel A and the channel B respectively compare and diagnose the respective sending data and the read-back data, if the sending data and the read-back data of the channel A or the channel B are inconsistent, 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, a normal communication channel and a diagnosis channel of the channel A and a normal communication channel and a diagnosis channel of the channel B receive data uploaded from the equipment at the same time;
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 two or more than two data are consistent or not in the voting result, and if the voting result indicates that two or more than two data are consistent, taking the data with the consistent value as normal data; if the voting result is negative, indicating that a channel has a fault;
and S223, outputting the normal data voted by the 2oo4 to other modules, reporting the voting diagnosis state, adding the channel state identifier to a channel state identifier bit of the next frame sending data, and informing the slave equipment whether the communication channel has a fault.
The functions of the dual-channel redundancy architecture system comprise a check means, a diagnosis means and a judgment logic in the single-channel redundancy architecture and the single-channel redundancy architecture. The reliability and the availability of the system are greatly improved, the system can still normally operate even when some faults occur, the system is ensured to have enough time to complete the executing task stage, 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 data processing of the communication control module and the diagnosis control module according to the received timing pulse signal.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the system and the method for diagnosing the serial communication interface of the multiple redundant architecture have clear and simple system architecture, realize higher safety and reliability with lower cost, realize the main control logic through 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, even if some faults occur in the system, the system can still normally operate, the system is guaranteed to have enough time to complete the task stage being executed, and meanwhile, the fault state information is reported in time.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a flow chart of a data transmission process of a single channel redundancy architecture system;
FIG. 3 is a flow chart of a data reception process for a single channel redundancy architecture system;
FIG. 4 is a flow chart of a dual channel redundancy architecture system data transmission control process;
FIG. 5 is a flow chart of a dual channel redundancy architecture system data reception control process.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit 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: it is not necessary to employ these specific details to practice the present invention. In other instances, well-known structures, circuits, materials, or methods have not been described in detail so as not to obscure the present invention.
Throughout the specification, reference to "one embodiment," "an embodiment," "one example," or "an example" means: the particular features, structures, or characteristics described in connection with the embodiment or example are included in at least one embodiment of the invention. Thus, the appearances of the phrases "one embodiment," "an embodiment," "one example" or "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. Further, those of ordinary skill in the art will appreciate that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the description of the present invention, it is to 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 those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the scope of the present invention.
Example 1
In the prior art, the diagnostic coverage rate of two communication diagnostic modes, namely one-bit data redundancy and multi-bit data redundancy, of a serial communication interface is not high, and after a serial communication fault is diagnosed in the prior art, the fault cannot be isolated in time, so that information transmission is broken, no extra redundancy means is used for transmitting effective data, the stability and reliability of the system are not high, and the safety function execution and normal operation of the whole system are influenced. The invention relates to a serial communication interface diagnostic system with a multiple redundancy architecture, which comprises two identical serial communication channels, namely 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 diagnostic 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 diagnosis function logic control;
the RS485 interface chip 1 and the RS485 interface chip 2 are connected 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 connection and disconnection of the output channel of the RS485 interface chip.
The system architecture configuration is carried out according to specific use conditions, 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, a single-channel communication system adopts a one-bit data redundancy, multi-bit data redundancy and information redundancy retransmission mechanism to carry out diagnosis and check, and the problem that the diagnosis coverage rate is not high in the prior art is solved; the diagnosis control module compares and checks two continuous frames of data with completely consistent received data field contents, the two frames of data are checked in different modes, for example, the first frame of data is subjected to CRC check with odd check sum polynomial of 0xBAAD, the second frame of data is subjected to CRC check with even check sum 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 modes, and the diagnosis coverage rate of a channel can be improved to 99% through increasing an information redundancy retransmission mechanism.
When the control switches S1, S2, S3 and S4 of the channel A are closed, the diagnosis control module works, and the channel B does not work, the system is a single-channel redundancy architecture, and a single-bit data redundancy, multi-bit data redundancy and information redundancy retransmission mechanism is adopted for diagnosis and check of the single-channel redundancy architecture system.
As shown in fig. 2, the diagnostic process of the data transmission phase of the single-channel redundancy architecture system specifically includes steps S111 to S114:
s111, the communication control module of the channel A sends the group frame 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 the TTL level into an RS485 level and outputs an RS485 signal;
s113, the RS485 interface chip 2 receives the RS485 signal for processing and outputs recovery data;
s114, the diagnosis control module receives the recovered data, compares the recovered data with the framing data, and if the framing data is different from the recovered data, indicates that a normal communication channel has a fault;
and S115, when the diagnosis control module diagnoses that the normal communication channel has a fault, the control switches S1 and S2 are switched off, the fault channel is isolated and cut off, the diagnosis control module changes the function at the moment and does not have the diagnosis function, the diagnosis control module serves as a normal data sending module, and the diagnosis control module is used for transmitting framing data through the RS485 interface chip 2.
As shown in fig. 3, the diagnostic 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 the equipment through the RS485 interface chip 1 from the normal communication channel, and meanwhile, the diagnosis control module receives the data input from the equipment through the RS485 interface chip 2 from the diagnosis channel;
s122, the communication control module analyzes the input data and outputs analyzed data;
s123, the diagnosis control module receives the analysis data, compares the analysis data with data input from equipment, and if the two data are different, indicates that a receiving channel has a fault, wherein the receiving channel represents at least one of a diagnosis channel and a normal communication channel;
and S124, the diagnosis control module carries out diagnosis and check on the receiving channel by combining a bit data redundancy mechanism, a multi-bit data redundancy mechanism and an information redundancy retransmission mechanism, and controls the switches S1 and S2 to be switched off, S3 and S4 to be switched on when a normal communication channel is diagnosed to have a fault, so as to isolate and cut off the fault channel and use the diagnosis channel to replace the normal communication channel for data transceiving.
For a single-channel redundancy architecture system, when a receiving channel fails, whether a diagnostic channel or a normal channel has a problem cannot be determined through data comparison, only one of the diagnostic channel and the normal communication channel is known to have a problem, and at the moment, a single-bit data redundancy, multi-bit data redundancy and information redundancy retransmission mechanism is adopted to carry out diagnostic check to jointly determine which channel fails. The diagnosis control module, the redundancy RS485 interface chip and the redundancy control analog switch are added, so that the diagnosis coverage rate of the system is high, the hardware redundancy is realized, the fault can be isolated in time after the fault occurs, and the effective transmission of data is ensured.
When the control switches S1, S2, S3 and S4 of the channel A and the channel B are closed, the system is a dual-channel redundancy architecture at the moment, and a single-bit data redundancy, multi-bit data redundancy and information redundancy retransmission mechanism is adopted for diagnosis and check of the dual-channel redundancy architecture system. The double-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 misjudgment is caused by the fact that a diagnosis channel fault is possibly generated and the fault is mistaken for a normal channel fault 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 double-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 is in normal communication or not by judging the channel state identification bit, if so, closing a corresponding fault channel, and informing the channel B of the fault state; if the channel A is in normal communication, the channel A prepares to send data, copies one copy of the data to be sent and transmits the copy to the channel B;
s212, judging whether the channel B is in normal communication 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 is in normal communication, the channel B performs data framing to obtain sending data, and the framing process comprises adding a one-bit data redundancy, a multi-bit data redundancy and an information redundancy retransmission mechanism;
s213, the channel A frames the data to be sent to obtain the sending data, and 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, the slave equipment judges which channel fails by judging a channel state identification bit in the data, and discards corresponding failed channel data;
s215, when data is sent, the diagnostic channels in the channel A and the channel B read back the sent data;
s216, the diagnosis control modules of the channel A and the channel B respectively compare and diagnose the respective sending data and the read-back data, if the sending data and the read-back data of the channel A or the channel B are inconsistent, 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, a normal communication channel and a diagnosis channel of the channel A and a normal communication channel and a diagnosis channel of the channel B receive data uploaded from the equipment at the same time;
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 two or more than two data are consistent or not according to the voting result, and if so, taking the consistent value of the data as normal data; if the judgment result is negative, the channel is judged to have a fault;
and S223, outputting the normal data voted by the 2oo4 to other modules, reporting the voting diagnosis state, adding the channel state identifier to a channel state identifier bit of the next frame sending data, and informing the slave equipment whether the communication channel has a fault.
The functions of the dual-channel redundancy architecture system comprise a check means, a diagnosis means and a judgment logic in the single-channel redundancy architecture and the single-channel redundancy architecture. The reliability and the availability of the system are greatly improved, the system can still normally operate even when some faults occur, the system is ensured to have enough time to complete the executing task stage, 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 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 data processing of the communication control module and the step data according to the received timing pulse signal.
It can be understood that, through the serial communication interface diagnostic system with the multiple redundancy architecture, the system architecture is clear and simple, the higher safety and reliability are realized with lower cost, the main control logic is realized through 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, even if some faults occur in the system, the system can still normally operate, the system is guaranteed to have enough time to complete the task stage being executed, and meanwhile, the fault state information is reported in time.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. A serial communication interface diagnosis system with a multiple redundancy architecture is characterized by comprising 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 diagnosis function logic control;
the RS485 interface chip 1 and the RS485 interface chip 2 are connected 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 connection and disconnection of the output channel of the RS485 interface chip.
2. A serial communication interface diagnosis method of a multiple redundancy architecture is applied to the serial communication interface diagnosis system of claim 1, and is characterized in that when control switches S1 and S2 of a channel A are closed and S3 and S4 are opened, and a channel B does not work, the system is single-channel communication, a single-bit data redundancy, multi-bit data redundancy and information redundancy retransmission mechanism are adopted for diagnosis and check of the single-channel communication system, the diagnosis control module compares and checks two continuous frames of data with completely consistent received data field contents, the two frames of data are checked in different modes, an odd check and a CRC check with a polynomial of 0xBAAD are adopted for first frame data, and an even check and a CRC check with a polynomial of 0xC86C are adopted for second frame data.
3. The method as claimed in claim 2, wherein when the control switches S1, S2, S3 and S4 of the lane a are closed and the lane B does not operate, the system is a single-channel redundancy architecture, the single-channel redundancy architecture system employs a single-bit data redundancy, multiple-bit data redundancy and information redundancy retransmission mechanism for performing the diagnostic check, and the diagnostic process for the serial communication interface of the single-channel redundancy architecture system includes a data transmission stage and a data reception stage.
4. The method as claimed in claim 3, wherein the step of diagnosing the data transmission stage comprises the following steps:
s111, the communication control module of the channel A sends the group frame 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 the TTL level into an RS485 level and outputs an RS485 signal;
s113, the RS485 interface chip 2 receives the RS485 signal for processing and outputs recovery data;
s114, the diagnosis control module receives the recovered data, compares the recovered data with the framing data, and if the framing data is different from the recovered data, indicates that a normal communication channel has a fault;
and S115, when the diagnosis control module diagnoses that the normal communication channel has a fault, the control switches S1 and S2 are switched off, 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. The method as claimed in claim 3, wherein the step of diagnosing the data transmission stage comprises the following steps:
s121, the communication control module receives data input from the equipment through the RS485 interface chip 1 from the normal communication channel, and meanwhile, the diagnosis control module receives the data input from the equipment through the RS485 interface chip 2 from the diagnosis channel;
s122, the communication control module analyzes the input data and outputs analyzed data;
s123, the diagnosis control module receives the analysis data, compares the analysis data with data input from equipment, and if the two data are different, indicates that a receiving channel has a fault, wherein the receiving channel represents at least one of a diagnosis channel and a normal communication channel;
and S124, the diagnosis control module carries out diagnosis and check on the receiving channel by combining a bit data redundancy mechanism, a multi-bit data redundancy mechanism and an information redundancy retransmission mechanism, and controls the switches S1 and S2 to be switched off, S3 and S4 to be switched on when a normal communication channel is diagnosed to have a fault, so as to isolate and cut off the fault channel and use the diagnosis channel to replace the normal communication channel for data transceiving.
6. The method as claimed in claim 2, wherein when the control switches S1, S2, S3 and S4 of the lane a and the lane B are closed, the system is a dual-channel redundancy architecture, the dual-channel redundancy architecture system is subjected to the diagnostic check by using the one-bit data redundancy, the multi-bit data redundancy and the information redundancy retransmission mechanism, and the diagnostic process for the serial communication interface of the dual-channel redundancy architecture system includes a data transmission control process and a data reception control process.
7. The method of claim 6, wherein the step of diagnosing the data transmission control process comprises the steps of:
s211, judging whether the channel A is in normal communication or not by judging the channel state identification bit, if so, closing a corresponding fault channel, and informing the channel B of the fault state; if the channel A is in normal communication, the channel A prepares to send data, copies one copy of the data to be sent and transmits the copy to the channel B;
s212, judging whether the channel B is in normal communication 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 is in normal communication, the channel B performs data framing to obtain sending data, and the framing process comprises adding a one-bit data redundancy, a multi-bit data redundancy and an information redundancy retransmission mechanism;
s213, the channel A frames the data to be sent to obtain the sending data, and 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, the slave equipment judges which channel fails by judging a channel state identification bit in the data, and discards corresponding failed channel data;
s215, when data is sent, the diagnostic channels in the channel A and the channel B read back the sent data;
s216, the diagnosis control modules of the channel A and the channel B respectively compare and diagnose the respective sending data and the read-back data, if the sending data and the read-back data of the channel A or the channel B are inconsistent, 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 as claimed in claim 6, wherein the step of diagnosing the data reception control process comprises the steps of:
s221, a normal communication channel and a diagnosis channel of the channel A and a normal communication channel and a diagnosis channel of the channel B receive data uploaded from the equipment at the same time;
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 two or more than two data are consistent or not according to the voting result, and if so, taking the consistent value of the data as normal data; if the judgment result is negative, the channel is judged to have a fault;
and S223, outputting the normal data voted by the 2oo4 to other modules, reporting the voting diagnosis state, adding the channel state identifier to a channel state identifier bit of the next frame sending data, and informing the slave equipment whether the communication channel has a fault.
9. The method as claimed in any one of claims 3 to 8, wherein the communication control module generates a timing pulse signal through a timer and sends the timing pulse signal to the diagnostic control module, and the data processing is performed with the diagnostic control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011485069.XA CN112526979B (en) | 2020-12-16 | 2020-12-16 | Serial communication interface diagnosis system and method with multiple redundancy architecture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011485069.XA CN112526979B (en) | 2020-12-16 | 2020-12-16 | Serial communication interface diagnosis system and method with multiple redundancy architecture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112526979A true CN112526979A (en) | 2021-03-19 |
| CN112526979B CN112526979B (en) | 2023-06-09 |
Family
ID=75000588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011485069.XA Active CN112526979B (en) | 2020-12-16 | 2020-12-16 | Serial communication interface diagnosis system and method with multiple redundancy architecture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112526979B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110677333A (en) * | 2019-09-25 | 2020-01-10 | 国网山东省电力公司枣庄供电公司 | Intelligent conversion device for 485 interface of electric meter |
Citations (54)
| 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 |
| US20020046382A1 (en) * | 1998-06-24 | 2002-04-18 | Ganning Yang | Method and apparatus for detecting and correcting errors using cyclic redundancy check |
| US20040062221A1 (en) * | 2002-09-30 | 2004-04-01 | Nandu Gopalakrishnan | Signaling and control mechanisms in MIMO harq schemes for wireless communication systems |
| 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 |
| US20060064291A1 (en) * | 2004-04-21 | 2006-03-23 | Pattipatti Krishna R | Intelligent model-based diagnostics for system monitoring, diagnosis and maintenance |
| 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 |
| US20060262807A1 (en) * | 2003-10-10 | 2006-11-23 | Satoshi Aoki | Control system using serial communication |
| 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 |
| US20100117788A1 (en) * | 2007-04-26 | 2010-05-13 | Freescale Semiconductor, Inc. | Diagnosis for mixed signal device for use in a distributed system |
| 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 |
| US20180349235A1 (en) * | 2017-06-01 | 2018-12-06 | The University Of Akron | Redundant computer system utilizing comparison diagnostics and voting techniques |
| EP3422125A1 (en) * | 2017-06-29 | 2019-01-02 | The Boeing Company | Fault coverage for multiple failures in redundant systems |
| US20190049916A1 (en) * | 2018-10-09 | 2019-02-14 | Intel Corporation | Soc architecture to integrate with one out of two diagnostics platforms |
| 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 |
-
2020
- 2020-12-16 CN CN202011485069.XA patent/CN112526979B/en active Active
Patent Citations (55)
| 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 |
| US20020046382A1 (en) * | 1998-06-24 | 2002-04-18 | Ganning Yang | Method and apparatus for detecting and correcting errors using cyclic redundancy check |
| US20040062221A1 (en) * | 2002-09-30 | 2004-04-01 | Nandu Gopalakrishnan | Signaling and control mechanisms in MIMO harq schemes for wireless communication systems |
| 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 |
| US20060262807A1 (en) * | 2003-10-10 | 2006-11-23 | Satoshi Aoki | Control system using serial communication |
| US20060064291A1 (en) * | 2004-04-21 | 2006-03-23 | Pattipatti Krishna R | Intelligent model-based diagnostics for system monitoring, diagnosis and maintenance |
| 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 |
| 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 |
| 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 |
| US20100117788A1 (en) * | 2007-04-26 | 2010-05-13 | Freescale Semiconductor, Inc. | Diagnosis for mixed signal device for use in a distributed system |
| 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 |
| 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 |
| 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 |
| US20180349235A1 (en) * | 2017-06-01 | 2018-12-06 | The University Of Akron | Redundant computer system utilizing comparison diagnostics and voting techniques |
| 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 |
| US20190049916A1 (en) * | 2018-10-09 | 2019-02-14 | Intel Corporation | Soc architecture to integrate with one out of two diagnostics platforms |
| 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" * |
| LEE, MH: "Localized detection of faults in wireless sensor networks" * |
| LI, JIE: "Scheme for periodical concurrent fault detection in parallel CRC circuits" * |
| PREAULT, C: "Real Time Redundancy-Based Approach to Robot-Patient Safe Enhancement: Application to Doppler Sonography" * |
| ZENG QIUFEN: "Line redundancy of train communication network" * |
| 吕子雷: "广州地铁3号线列车通信网络诊断机制研究" * |
| 张振华: "串行通信测试系统研究与设计" * |
| 李彦平: "一种可重构式安全级控制系统设计" * |
| 梁素英: "整流所自动化监控系统的应用" * |
| 王冬冬: "基于nRF24LE1的无线表决器设计与实现" * |
| 罗兆荣: "电动执行机构用现场总线冗余控制技术研究" * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110677333A (en) * | 2019-09-25 | 2020-01-10 | 国网山东省电力公司枣庄供电公司 | Intelligent conversion device for 485 interface of electric meter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112526979B (en) | 2023-06-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7080288B2 (en) | Method and apparatus for interface failure survivability using error correction | |
| US5218465A (en) | Intelligent interconnects for broadband optical networking | |
| JP3002201B2 (en) | Cross-connection type inspection circuit and integrated circuit therefor | |
| JPH0773270B2 (en) | Data communication method and multiple connection system | |
| US6601210B1 (en) | Data integrity verification in a switching network | |
| US8209594B2 (en) | Sending device, receiving device, communication control device, communication system, and communication control method | |
| US4823347A (en) | Deferred parity checking of control signals across a bidirectional data transmission interface | |
| CN108337069B (en) | Improved error rate reducing end parallel grouping CRC (Cyclic redundancy check) system | |
| CN112526979B (en) | Serial communication interface diagnosis system and method with multiple redundancy architecture | |
| JPH09212453A (en) | Bus extension adaptive type control system | |
| CA2238030C (en) | Testing method and apparatus for verifying correct connection of circuit elements | |
| EP0130429B1 (en) | Failure detection apparatus | |
| US7366952B2 (en) | Interconnect condition detection using test pattern in idle packets | |
| CN1007021B (en) | Method of error detection and correction by reconstruction of majority | |
| US6373819B1 (en) | Routine testing parity maintenance | |
| EP1271854A2 (en) | Fault tolerant voting system and method | |
| JP2929975B2 (en) | Fault Diagnosis Method for Bus Interface Circuit | |
| JPS5833330A (en) | Checking system for cable transmission line | |
| JPH04305748A (en) | Highly reliable bus | |
| US5392291A (en) | Fault-tolerant CITO communication system | |
| JP3221259B2 (en) | Bus type duplex transmission equipment | |
| WO2023118931A1 (en) | Can transceiver monitor | |
| JPS62208152A (en) | Redundancy parallel transmission equipment | |
| CN112622981A (en) | Medium-low speed magnetic levitation turnout position indicating circuit | |
| CN117914745A (en) | Communication device and fault monitoring device for communication link thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230718 Address after: 621000 building 31, No.7, Section 2, Xianren Road, Youxian District, Mianyang City, Sichuan Province Patentee after: China Ordnance Equipment Group Automation Research Institute Co.,Ltd. Address before: 621000 Mianyang province Sichuan City Youxian District Road No. 7 two immortals Patentee before: China Ordnance Equipment Group Automation Research Institute Co.,Ltd. |