CN107528747A - A kind of diagnostic method and device and computer-readable recording medium - Google Patents
A kind of diagnostic method and device and computer-readable recording medium Download PDFInfo
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- CN107528747A CN107528747A CN201710506685.0A CN201710506685A CN107528747A CN 107528747 A CN107528747 A CN 107528747A CN 201710506685 A CN201710506685 A CN 201710506685A CN 107528747 A CN107528747 A CN 107528747A
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- 238000002405 diagnostic procedure Methods 0.000 title claims abstract description 24
- 238000004891 communication Methods 0.000 claims abstract description 100
- 238000003745 diagnosis Methods 0.000 claims abstract description 18
- 238000012795 verification Methods 0.000 claims description 11
- 238000004590 computer program Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000013524 data verification Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
- H04L43/0811—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking connectivity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
- H04L1/1671—Details of the supervisory signal the supervisory signal being transmitted together with control information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Environmental & Geological Engineering (AREA)
- Maintenance And Management Of Digital Transmission (AREA)
- Computer And Data Communications (AREA)
- Small-Scale Networks (AREA)
Abstract
The embodiment of the invention discloses a kind of diagnostic method and device and computer-readable recording medium, the diagnostic method includes：Backup host receives the first data by universal serial bus, and identifies that the first data received are the request message that communication host is sent；Backup host receives the second data by universal serial bus, and identifies that the second data received are the response message that slave station is sent；Backup host diagnoses according to request message and response message to the communications status between main website and slave station.Pass through the scheme of the embodiment of the present invention, backup host first identifies the request message that communication host is sent, the response message that slave station is sent is identified again, then diagnosed according to request message and response message, diagnosis is realized without itself sending request message, while has taken into account the fluency of the real-time of communications status diagnosis and master station communication between main website and slave station.
Description
Technical field
The present invention relates to serial bus communication technology, espespecially a kind of diagnostic method and device and computer-readable storage medium
Matter.
Background technology
In serial bus communication, communication uses main (Master, also referred to as main website)-from (Slave, also referred to as slave station, equipment)
Technology, i.e., the data provided are provided according to main equipment and made accordingly in synchronization, only one main website energy initial transmission, slave station
Reaction.When main website redundancy, synchronization, there can only be main website to initiate request, another main website must be silent, otherwise, can be by
In the communication data that universal serial bus conflict causes to receive be mess code, so as to cause communication failure.For the ease of description, claim superfluous
Remaining main website is communication host (also referred to as main frame) and backup host (being also referred to as standby host), main frame be designated as front end communication processor (FEP,
Front-End Processor)-A, standby host is designated as FEP-B.As shown in figure 1, main website includes the FEP-A and FEP- being mutually redundant
Being connected, and be all connected on universal serial bus by two-shipper heartbeat between B, FEP-A and FEP-B, slave station includes N number of equipment,
It is connected to one by one on universal serial bus respectively.
In order to circulate a notice of the communication failure between main website and slave station in time, and standby host is switched in time when main frame breaks down
For main frame, it is necessary to be diagnosed to the communications status between main website and slave station.
The content of the invention
The embodiments of the invention provide a kind of diagnostic method and device and computer-readable recording medium, can take into account main website
The real-time and the fluency of master station communication that communications status diagnoses between slave station.
The embodiments of the invention provide a kind of diagnostic method, including：
Backup host receives the first data by universal serial bus, and identifies that the first data received are communication host
The request message of transmission；
Backup host receives the second data by universal serial bus, and identifies that the second data received send for slave station
Response message；
Backup host diagnoses according to request message and response message to the communications status between main website and slave station.
Optionally, for the backup host when interval between diagnosis arrives, execution is described to receive the first number by universal serial bus
According to, and identify that the first data received are the request message that communication host is sent；Second number is received by universal serial bus
According to, and identify the step of the second data received are the response message that slave station is sent.
Optionally, the continuous n times of the backup host identify that first data are the request that the communication host is sent
Message, and identify second data for the slave station send response message when, according to the request identified for the last time
Message and response message, the communications status between main website and slave station is diagnosed；
Wherein, N is the integer more than or equal to 1.
Optionally, the backup host and the communication host are communicated using 103 agreements；Described identify receives
The first data for communication host send request message include：
The backup host judges that the first byte of first data is 68H, obtains the 5th word of first data
Section；
The backup host judges that a time high position for the 5th byte is 1, and the data length of the 5th byte closes
Method, and the verification of the 5th byte and legal, it is the request message that the communication host is sent to determine first data.
Optionally, the backup host and the communication host are communicated using 103 agreements；Described identify receives
The first data for communication host send request message include：
The backup host judges that the first byte of first data is 10H, obtains the second word of first data
Section；
The backup host judges that a time high position for second byte is 1, and the data length of second byte closes
Method, and the verification of second byte and legal, it is the request message that the communication host is sent to determine first data.
Optionally, the backup host and the communication host are communicated using Modbus agreements；Described identify connects
The first data received are that the request message that communication host is sent includes：
The backup host judges that the data length of first data is more than or equal to 8 bytes, and is currently bus
Pattern, and the destination address of first data is non-zero, and the function code of first data is 1 or 2 or 3 or 4, and the machine please
Ask in list and identical request message be present, and the verification of first data and legal, determine that first data are described
The request message that communication host is sent.
The embodiment of the present invention also proposed a kind of diagnostic device, including：
Identification module, it is logical for receiving the first data by universal serial bus, and identifying the first data received
Believe the request message that main frame is sent；Second data are received by universal serial bus, and identify the second data for receiving be from
Stand send response message；
Diagnostic module, for according to request message and response message, examining the communications status between main website and slave station
It is disconnected.
Optionally, the identification module is specifically used for：
When interval between diagnosis arrives, execution is described to receive the first data by universal serial bus, and identifies what is received
First data are the request message that communication host is sent；Second data are received by universal serial bus, and identify what is received
The step of second data are the response message that slave station is sent.
Optionally, the identification module is specifically used for：
Continuous n times receive the first data by universal serial bus, and identify that the first data received are communication host
The request message of transmission；Second data are received by universal serial bus, and identify that the second data received send for slave station
Response message；Wherein, N is the integer more than or equal to 1；
The diagnostic module is specifically used for：
According to the request message and response message identified for the last time, the communications status between main website and slave station is carried out
Diagnosis.
The embodiment of the present invention also proposed a kind of backup host, including processor and computer-readable recording medium, described
Instruction is stored with computer-readable recording medium, when it is described instruction by the computing device when, realize it is above-mentioned any one
The step of diagnostic method.
The embodiment of the present invention also proposed a kind of computer-readable recording medium, be stored thereon with computer program, described
The step of any one above-mentioned diagnostic method is realized when computer program is executed by processor.
Compared with correlation technique, the embodiment of the present invention includes：Backup host receives the first data by universal serial bus, and
It is the request message that communication host is sent to identify the first data received；Backup host receives second by universal serial bus
Data, and identify that the second data received are the response message that slave station is sent；Backup host is according to request message and response
Message, the communications status between main website and slave station is diagnosed.By the scheme of the embodiment of the present invention, backup host first identifies
Go out the request message of communication host transmission, then identify the response message that slave station is sent, then according to request message and response report
Text is diagnosed, and realizes diagnosis without itself sending request message, while taken into account the shape that communicated between main website and slave station
The real-time of state diagnosis and the fluency of master station communication.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
Obtain it is clear that or being understood by implementing the present invention.The purpose of the present invention and other advantages can be by specification, rights
Specifically noted structure is realized and obtained in claim and accompanying drawing.
Brief description of the drawings
Accompanying drawing is used for providing further understanding technical solution of the present invention, and a part for constitution instruction, with this
The embodiment of application is used to explain technical scheme together, does not form the limitation to technical solution of the present invention.
Fig. 1 is the structure composition schematic diagram of existing serial bus communication；
Fig. 2 is the flow chart of diagnostic method of the embodiment of the present invention；
Fig. 3 is the structure composition schematic diagram of diagnostic device of the embodiment of the present invention；
Fig. 4 is the structure composition schematic diagram of backup host of the embodiment of the present invention.
Embodiment
Embodiments of the invention are described in detail below in conjunction with accompanying drawing.It should be noted that do not conflicting
In the case of, the feature in embodiment and embodiment in the application can be mutually combined.
Can be in the computer system of such as one group computer executable instructions the flow of accompanying drawing illustrates the step of
Perform.Also, although logical order is shown in flow charts, in some cases, can be with suitable different from herein
Sequence performs shown or described step.
Conventional diagnostic method generally comprises：
Backup host switches to provisional communication every set time (such as 30 seconds, referred to as interval between diagnosis (WatchTime))
Main frame (and at the same time, former communication host FEP-A switches to interim standby host, keeps silent status) sent and asked by universal serial bus
Message is sought, and request message is synchronized to communication host by two-shipper heartbeat, the response report of slave station is identified in preset time
Text, and data processing is carried out to response message, local device state is updated to presence, response is passed through into two-shipper heartbeat
FEP-A is synchronized to, the communications status between main website and slave station is carried out according to the request message of transmission and the response message of identification
Diagnosis.
In conventional diagnostic method, due to during backup host switches to provisional communication main frame, being originally in work shape
The communication host of state can only be silent, it is impossible to any request occurs, occupies the serial bus resources of preciousness.Once on universal serial bus
Multiple equipment is accessed, this diagnostic mode causes the communication fluency to communication host the influence of highly significant, if
WatchTime is short, although may insure the real-time that backup host diagnoses to communications status between main website and slave station, but beats
Broken communication host and the fluency of equipment communication., whereas if WatchTime grows, although ensure that communication host and equipment
The fluency of communication, but lose the real-time that backup host diagnoses to communications status between main website and slave station.To sum up, the diagnosis
On the fluency that the real-time and communication host that method diagnoses in backup host to communications status between main website and slave station communicate very
Difficulty is taken into account.
Based on above mentioned problem, because universal serial bus has a feature, i.e., any one communication node is sent on universal serial bus
Message, other nodes on universal serial bus can receive the communication node transmission message.Based on this feature, the present invention
Embodiment proposes a kind of diagnostic method, during communication host and slave station communication, is not initiated although backup host is silent in itself
Message, but backup host still can receive the response message that the request message of communication host transmission and slave station are sent, and go here and there
Row bus agreement is can to identify the response message that the request message of communication host transmission and slave station are sent, i.e. backup host exists
In the data flow terminated during silence, the request message of communication host transmission and answering for slave station transmission are necessarily contained successively
Message is answered, by the stipulations attribute of serial bus protocol, backup host first identifies the request message that communication host is sent, then knows
Do not go out the response message of slave station transmission, then diagnosed according to request message and response message, please without itself sending
Message is sought to realize diagnosis, while has taken into account the stream of the real-time of communications status diagnosis and master station communication between main website and slave station
Smooth property.
Referring to Fig. 2, the embodiment of the present invention proposes a kind of diagnostic method, including：
Step 200, backup host receive the first data by universal serial bus, and identify that the first data received are
The request message that communication host is sent.
In this step, backup host and communication host are communicated using serial bus protocol.
Wherein, serial bus protocol includes 103 agreements or response protocol etc., response protocol include Modbus,
IEC60870-5-101, IEC60870-5-103 etc..
When backup host and communication host are communicated using 103 agreements, identify that the first data received are logical
The request message that letter main frame is sent includes：
Backup host judges that the first byte of the first data is 68H, obtains the 5th byte of the first data；Backup host is sentenced
Breaking, the time high-order of the 5th byte be 1, and the data length of the 5th byte is legal, and the verification of the 5th byte and legal, it is determined that
First data are the request message that communication host is sent.
Or backup host judges that the first byte of the first data is 10H, the second byte of the first data is obtained；It is standby
Main frame judges that the time high-order of second byte is 1, and the data length of the second byte is legal, and the verification of the second byte and
Legal, it is the request message that communication host is sent to determine the first data.
Wherein, when backup host judges that a time high position for the 5th byte is not that the data length of the 1, or the 5th byte does not conform to
Method, or the 5th byte verification and it is illegal when, the backup host determine the first data be not communication host send request
Message.
Wherein, when backup host judges that a time high position for the second byte is not that the data length of the 1, or second byte does not conform to
Method, or the second byte verification and it is illegal when, the backup host determine the first data be not communication host send request
Message.
When backup host and communication host use Modbus agreements, (full name is the industrial automation net based on Modbus agreements
Network specification GB/T19582) when being communicated, it is the request message bag that communication host is sent to identify the first data received
Include：
Backup host judges that the data length of the first data is more than or equal to 8 bytes, and is currently mode bus, and the
The destination address of one data is non-zero, and the function code of the first data is 1 or 2 or 3 or 4, and identical be present in the machine request list
Request message, and the verification of the first data and legal, it is the request message that communication host is sent to determine the first data.
Wherein, when backup host judges that the data length of the first data is less than 8 bytes, or mode bus is currently not,
Or first the destination addresses of data be 0, or the function code of the first data is not deposited in 1 and 2 and 3 and 4, or the machine request list
Identical ask, or the first data verification and it is illegal when, determine the first data be not communication host send request report
Text.
It can identify whether the first data are communication using corresponding stipulations attribute for other serial bus protocols
The request message that main frame is sent.
Step 201, backup host receive the second data by universal serial bus, and identify that the second data received are
The response message that slave station is sent.
Step 202, backup host are carried out according to request message and response message to the communications status between main website and slave station
Diagnosis.
In the above method, backup host can perform step 200 and step 201 when interval between diagnosis arrives.
In the above method, backup host continuously n times can identify that the first data are the request message that communication host is sent,
And when identifying the response message that the second data send for slave station, according to the request message and response report identified for the last time
Text, the communications status between main website and slave station is diagnosed；
Wherein, N is the integer more than or equal to 1.
Referring to Fig. 3, the embodiment of the present invention also proposed a kind of diagnostic device, including：
Identification module, it is logical for receiving the first data by universal serial bus, and identifying the first data received
Believe the request message that main frame is sent；Second data are received by universal serial bus, and identify the second data for receiving be from
Stand send response message；
Diagnostic module, for according to request message and response message, examining the communications status between main website and slave station
It is disconnected.
Optionally, the identification module is specifically used for：
When interval between diagnosis arrives, execution is described to receive the first data by universal serial bus, and identifies what is received
First data are the request message that communication host is sent；Second data are received by universal serial bus, and identify what is received
The step of second data are the response message that slave station is sent.
Optionally, the identification module is specifically used for：
Continuous n times receive the first data by universal serial bus, and identify that the first data received are communication host
The request message of transmission；Second data are received by universal serial bus, and identify that the second data received send for slave station
Response message；Wherein, N is the integer more than or equal to 1；
The diagnostic module is specifically used for：
According to the request message and response message identified for the last time, the communications status between main website and slave station is carried out
Diagnosis.
Referring to Fig. 4, the embodiment of the present invention also proposed a kind of backup host, including processor and computer-readable storage medium
Matter, instruction is stored with the computer-readable recording medium, when the instruction is by the computing device, realize above-mentioned
The step of one diagnostic method of meaning.
The embodiment of the present invention also proposed a kind of computer-readable recording medium, be stored thereon with computer program, described
The step of any one above-mentioned diagnostic method is realized when computer program is executed by processor.
Although disclosed herein embodiment as above, described content be only readily appreciate the present invention and use
Embodiment, it is not limited to the present invention.Technical staff in any art of the present invention, taken off not departing from the present invention
On the premise of the spirit and scope of dew, any modification and change, but the present invention can be carried out in the form and details of implementation
Scope of patent protection, still should be subject to the scope of the claims as defined in the appended claims.
Claims (11)
- A kind of 1. diagnostic method, it is characterised in that including：Backup host receives the first data by universal serial bus, and identifies that the first data received send for communication host Request message；Backup host receives the second data by universal serial bus, and identifies that the second data received are answered for what slave station was sent Answer message；Backup host diagnoses according to request message and response message to the communications status between main website and slave station.
- 2. diagnostic method according to claim 1, it is characterised in that the backup host is held when interval between diagnosis arrives Row is described to receive the first data by universal serial bus, and identifies that the first data received are the request that communication host is sent Message；Second data are received by universal serial bus, and identify that the second data received are the response message that slave station is sent The step of.
- 3. diagnostic method according to claim 1, it is characterised in that the continuous n times of backup host identify described One data are the request message that the communication host is sent, and identify that second data are the response report that the slave station is sent Wen Shi, according to the request message and response message identified for the last time, the communications status between main website and slave station is examined It is disconnected；Wherein, N is the integer more than or equal to 1.
- 4. according to the diagnostic method described in claims 1 to 3 any one, it is characterised in that the backup host and described logical Letter main frame is communicated using 103 agreements；It is described to identify that the first data received are the request message that communication host is sent Including：The backup host judges that the first byte of first data is 68H, obtains the 5th byte of first data；The backup host judges that a time high position for the 5th byte is 1, and the data length of the 5th byte is legal, and The verification of 5th byte and legal, it is the request message that the communication host is sent to determine first data.
- 5. according to the diagnostic method described in claims 1 to 3 any one, it is characterised in that the backup host and described logical Letter main frame is communicated using 103 agreements；It is described to identify that the first data received are the request message that communication host is sent Including：The backup host judges that the first byte of first data is 10H, obtains the second byte of first data；The backup host judges that a time high position for second byte is 1, and the data length of second byte is legal, and The verification of second byte and legal, it is the request message that the communication host is sent to determine first data.
- 6. according to the diagnostic method described in claims 1 to 3 any one, it is characterised in that the backup host and described logical Letter main frame is communicated using Modbus agreements；It is described to identify that the first data received are the request report that communication host is sent Text includes：The backup host judges that the data length of first data is more than or equal to 8 bytes, and is currently mode bus, And the destination address of first data is non-zero, and the function code of first data is 1 or 2 or 3 or 4, and the machine request list In identical request message be present, and the verification of first data and legal determines that first data are led for the communication The request message that machine is sent.
- A kind of 7. diagnostic device, it is characterised in that including：Identification module, led for receiving the first data by universal serial bus, and identifying the first data received for communication The request message that machine is sent；Second data are received by universal serial bus, and identify that the second data received are sent out for slave station The response message sent；Diagnostic module, for according to request message and response message, being diagnosed to the communications status between main website and slave station.
- 8. diagnostic device according to claim 7, it is characterised in that the identification module is specifically used for：When interval between diagnosis arrives, execution is described to receive the first data by universal serial bus, and identifies first received Data are the request message that communication host is sent；Second data are received by universal serial bus, and identify second received The step of data are the response message that slave station is sent.
- 9. diagnostic device according to claim 7, it is characterised in that the identification module is specifically used for：Continuous n times receive the first data by universal serial bus, and identify that the first data received send for communication host Request message；Second data are received by universal serial bus, and identify that the second data received are answered for what slave station was sent Answer message；Wherein, N is the integer more than or equal to 1；The diagnostic module is specifically used for：According to the request message and response message identified for the last time, the communications status between main website and slave station is examined It is disconnected.
- 10. a kind of backup host, including processor and computer-readable recording medium, deposited in the computer-readable recording medium Contain instruction, it is characterised in that when the instruction is by the computing device, realize such as claim 1~6 any one institute The step of diagnostic method stated.
- 11. a kind of computer-readable recording medium, is stored thereon with computer program, it is characterised in that the computer program The step of diagnostic method as described in claim 1~6 any one is realized when being executed by processor.
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| CN111522698A (en) * | 2019-02-03 | 2020-08-11 | 比亚迪股份有限公司 | Automatic switching system and method of front-end processor |
| CN111586182A (en) * | 2020-05-11 | 2020-08-25 | 北京和利时***工程有限公司 | Data sending method and device |
| CN112015163A (en) * | 2020-08-20 | 2020-12-01 | 广州汽车集团股份有限公司 | Method and device for quickly identifying diagnostic subject on CAN bus |
| CN114142619A (en) * | 2021-12-28 | 2022-03-04 | 广东电网有限责任公司 | Overhauling determination method and device for telecontrol device |
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