CN108965052A - A kind of data reading system for the electronic control unit software debugging after entrucking - Google Patents
A kind of data reading system for the electronic control unit software debugging after entrucking Download PDFInfo
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- CN108965052A CN108965052A CN201810707675.8A CN201810707675A CN108965052A CN 108965052 A CN108965052 A CN 108965052A CN 201810707675 A CN201810707675 A CN 201810707675A CN 108965052 A CN108965052 A CN 108965052A
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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
- H04L43/50—Testing arrangements
-
- 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
- H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
-
- 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
- H04L43/14—Arrangements for monitoring or testing data switching networks using software, i.e. software packages
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40215—Controller Area Network CAN
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40267—Bus for use in transportation systems
- H04L2012/40273—Bus for use in transportation systems the transportation system being a vehicle
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Quality & Reliability (AREA)
- Debugging And Monitoring (AREA)
- Small-Scale Networks (AREA)
- Test And Diagnosis Of Digital Computers (AREA)
Abstract
The invention belongs to the technical fields of operating system, disclose a kind of data reading system for the vehicle electronic control unit software debugging after entrucking, including diagnostic equipment, the diagnostic equipment passes through CAN bus, it is communicated in conjunction with UDS diagnosing protocol and vehicle electronic control unit, the vehicle electronic control unit includes data processing module and random access memory ram, the diagnostic equipment passes through CAN bus, address read requests are sent to vehicle electronic control unit in conjunction with UDS diagnosing protocol, after the vehicle electronic control unit receives address read requests, assertive signal is issued to data processing module, the data processing module receives assertive signal, the address obtained according to the address read requests are parsed, it will be in the data assignment to test frame that the address be corresponded in random access memory ram, after assignment The test frame is sent to diagnostic equipment by CAN bus.The present invention can improve problem and check efficiency where quick positioning question.
Description
Technical field
The invention belongs to the technical fields of operating system, and in particular to a kind of vehicle electronic control unit for after entrucking
The data reading system and method for software debugging, computer readable storage medium and for the Vehicle Electronic Control list after entrucking
The electronic equipment of meta software debugging.
Background technique
For software developer, problem investigation is to determine program BUG, institute by analyzing program data after all
With when something goes wrong, programmer needs effective means and goes to obtain related data.In Automobile Electronic Industry, automotive electronics control
There are mainly two types of for different phase for unit ECU problem investigation processed:
1, software development phase debugs carry out problem investigation by Debug, and Debug can be intuitive to see that software is run
When particular state (value, function call situation, RAM data of each variable etc.), can be with quick positioning question.But Debug
Debugging need profession debugging tool and debugging interface, give client product be usually will not there are Debug interface,
And vehicle electronic control unit ECU stashes after entrucking, so be usually no Debug condition on real vehicle,
Debug method is only limitted to the program development stage；In addition, Debug is limited to upper it should be understood that software runs the occasion of timing
Machine, some host computers can only could show the numerical value of variable etc. in the case where encountering breakpoint program operation and suspending, not have thus
Method sees the data variation process in program operation process.
2, after software hands over sample, for the problem on client's real vehicle, vehicle network is enrolled when relying primarily on problem repetition
Message is analyzed to determine problem place.This method is limited to the network demand of client, can only see net predetermined
The value of network signal, but can not sometimes cover data in need checked, and to be analyzed in some cases
Message content is too many, heavy workload, and can not accurately learn vehicle electronic control unit ECU in house software operating status, this
Kind judgement is inaccurate, or even is easy erroneous judgement.
Summary of the invention
The present invention provides a kind of data reading system for the vehicle electronic control unit software debugging after entrucking and
Method, computer readable storage medium and the electronic equipment for the vehicle electronic control unit software debugging after entrucking, solution
The electronic control unit after existing entrucking of having determined does not have Debug interface, is unfavorable for carry out problem investigation, and pass through message content
The problems such as analysis carry out problem checks heavy workload, and False Rate is high.
The present invention can be achieved through the following technical solutions:
A kind of data reading system for the vehicle electronic control unit software debugging after entrucking, including diagnostic equipment, institute
It states diagnostic equipment to communicate by CAN bus, in conjunction with UDS diagnosing protocol and vehicle electronic control unit, the Vehicle Electronic Control list
Member includes data processing module and random access memory ram,
The diagnostic equipment is asked by CAN bus, in conjunction with UDS diagnosing protocol to vehicle electronic control unit transmission address reading
It asks, after the vehicle electronic control unit receives address read requests, issues assertive signal, the data to data processing module
Processing module receives assertive signal, will be in random access memory ram according to the address that the parsing address read requests obtain
In the data assignment to test frame of the corresponding address, the test frame after assignment is sent to diagnostic equipment by CAN bus.
Further, the test frame uses CAN message structure type, identifier ID and existing all CAN messages
Identifier ID is different.
Further, the number of the address of the address read requests is no more than eight.
Further, after the vehicle electronic control unit receives address read requests, periodically under data processing module
Assertive signal is sent out, the test frame after assignment passes through CAN bus periodicity sending to diagnostic equipment.
A kind of data reading system based on described above for the vehicle electronic control unit software debugging after entrucking
Method for reading data, comprising the following steps:
Step 1: preset the test frame of a CAN message structure type, the identifier ID of the test frame and existing
All CAN messages identifier ID it is different；
Step 2: diagnostic equipment sends address reading to vehicle electronic control unit by CAN bus, in conjunction with UDS diagnosing protocol
Take request；
Step 3: the vehicle electronic control unit receives the address read requests, read according to the address is parsed
Request obtained address, it is all periodically by the data assignment to test frame for correspond to address in random access memory ram
Diagnostic equipment is sent to phase property by CAN bus；
Step 4: repeating the reading for carrying out the address corresponding data of next address read requests Step 2: three.
Further, all periodically by the data assignment to test frame for correspond to address in random access memory ram
Phase property 10 milliseconds are set as by the period that CAN bus is sent to diagnostic equipment.
A kind of computer readable storage medium, for the vehicle electronic control unit software debugging after entrucking, including with examine
The computer program that disconnected instrument is used in combination, the computer program can be executed by processor and complete following steps:
Using diagnostic equipment, address reading is sent to vehicle electronic control unit by CAN bus, in conjunction with UDS diagnosing protocol
Request；
The address read requests are received and parsed through, automobile electricity corresponding with the address in the address read requests is read
Data in the RAM of sub-control unit；
By the data assignment into preset test frame, diagnostic equipment is sent to by CAN bus.
Further, vehicle electronic control unit corresponding with the address in the address read requests is periodically read
The data that address in RAM is included；
By the data, periodically assignment is sent to diagnostic equipment by CAN bus into preset test frame.
A kind of electronic equipment for the vehicle electronic control unit software debugging after entrucking, including one or more processing
Device, memory, and one or more programs, wherein one or more programs are stored in memory, and are matched
It is set to and is executed by one or more of processors, described program includes the instruction for executing following steps:
Using external diagnostic equipment, address is sent to vehicle electronic control unit by CAN bus, in conjunction with UDS diagnosing protocol
Read requests；
The address read requests are received and parsed through, automobile electricity corresponding with the address in the address read requests is read
Data in the RAM of sub-control unit；
By the data assignment into preset test frame, diagnostic equipment is sent to by CAN bus.
Further, vehicle electronic control unit corresponding with the address in the address read requests is periodically read
Data in RAM；
By the data, periodically assignment is sent to diagnostic equipment by CAN bus into preset test frame.
The beneficial technical effect of the present invention is as follows:
Using diagnostic equipment, by existing CAN bus and UDS diagnosing protocol, address is sent to vehicle electronic control unit
Read requests, the address read requests include one or more address that problem investigation needs to check, Vehicle Electronic Control list
Member issues to data processing module or periodically issues assertive signal, will be stored in the data in one or more address
Assignment is sent to by CAN bus or is periodically sent to reception pair to the test frame of pre-set CAN message structure
As, as diagnostic equipment or other can receive to the instrument of test frame, thus commissioning staff can check it is any related with problem
Effective address in data and data change procedure, where quick positioning question, reduce erroneous judgement, improve problem investigation
Efficiency, meanwhile, the working time that commissioning staff checks vehicle electronic control unit problem after entrucking is saved, its work effect is improved
Rate.
Detailed description of the invention
Fig. 1 is that overall circuit of the invention connects block diagram；
Fig. 2 is overall procedure schematic diagram of the invention.
Specific embodiment
With reference to the accompanying drawing and the preferred embodiment specific embodiment that the present invention will be described in detail.
Referring to attached drawing 1, the present invention provides a kind of data for the vehicle electronic control unit software debugging after entrucking
Reading system, including diagnostic equipment, the diagnostic equipment lead to by CAN bus, in conjunction with UDS diagnosing protocol and vehicle electronic control unit
News, which includes data processing module and random access memory ram.
The diagnostic equipment is asked by CAN bus, in conjunction with UDS diagnosing protocol to vehicle electronic control unit transmission address reading
It asks, after vehicle electronic control unit receives address read requests, issues assertive signal to data processing module, the data processing mould
Block receives assertive signal, and according to the address that parsing address read requests obtain, the address will be corresponded in random access memory ram
Data assignment to test frame in, test frame after assignment by CAN bus be sent to diagnostic equipment or other can receive to
The instrument of test frame.In order to preferably carry out problem investigation, the variation of data in the address for needing continuous observation to be connected with problem
Therefore process after vehicle electronic control unit receives address read requests, periodically can issue assignment to data processing module
Signal, test frame after assignment by CAN bus can periodicity sending to diagnostic equipment or other can receive to test
The instrument of frame.
The test frame uses CAN message structure type, and identifier ID and the identifier ID of existing all CAN messages are equal
Difference causes systemic breakdown to avoid the transmission output conflict with existing CAN message.
Since CAN bus once at most can receive or send the data of eight bytes, the ground of address read requests
The number of location is no more than eight.
In addition, address read requests, data processing module and the assignment operation of diagnostic equipment and vehicle electronic control unit
It can be realized by software program, specific process is as follows:
Using diagnostic equipment, address reading is sent to vehicle electronic control unit by CAN bus, in conjunction with UDS diagnosing protocol
Request；
Address above mentioned read requests are received and parsed through, automobile electricity corresponding with the address in address above mentioned read requests is read
Data in the RAM of sub-control unit；
By data assignment into preset test frame, diagnostic equipment is sent to by CAN bus.
It certainly, can be by the number in the address in RAM relevant with problem in order to preferably check the reason of problem occurs
According to periodically reading out, then sent out again periodically by data assignment into preset test frame by CAN bus
Diagnostic equipment is given, and test frame needs are carried out between diagnostic equipment and vehicle electronic control unit and are made an appointment, convenient for the two
Between carry out data communication.
Referring to attached drawing 2, the present invention also provides a kind of based on described above for the Vehicle Electronic Control list after entrucking
The method for reading data of the data reading system of meta software debugging, comprising the following steps:
Step 1: preset the test frame of a CAN message structure type, the identifier ID of the test frame with it is existing
The identifier ID of all CAN messages is different；
Step 2: diagnostic equipment sends address reading to vehicle electronic control unit by CAN bus, in conjunction with UDS diagnosing protocol
Take request；
Step 3: the vehicle electronic control unit receives the address read requests, according to the parsing address read requests
Obtained address, periodically by the data assignment to test frame for corresponding to the address in random access memory ram, periodically
Diagnostic equipment is sent to by CAN bus；
Step 4: repeating the reading for carrying out the address corresponding data of next address read requests Step 2: three.
In view of actual conditions, periodically by the data assignment for correspond to address in random access memory ram to testing
In frame, 10 milliseconds are set as periodically by the period that CAN bus is sent to diagnostic equipment.
Specific work process of the invention is as follows:
Firstly, the protocol stack of the CAN bus uses the VTP of Mentor, configured with the network configuration tool that Mentor is provided
Test frame of one frame for debugging, such as the frame that configuration ID is 666 generate code and complete to integrate, then, borrow as test frame
The diagnostic service rule for helping UDS diagnosing protocol, increases DID 0xB100 instruction, in this way, commissioning staff is just under 2E diagnostic service
Address read requests such as 2E B1 10XX XX XX XX can be sent to automotive electronics unit by diagnostic equipment, wherein XX is represented
Address, each 4 byte of address, at most sending 8 addresses will be to number after automotive electronics unit receives the address read requests
The sequence of addresses for issuing assertive signal according to processing module, and being obtained according to the address read requests are parsed, will successively correspond to
Machine accesses in the test frame that the data assignment of memory RAM is 666 to ID at appropriate address, finally, will be assigned by CAN bus again
The test frame that ID after value is 666 is sent to diagnostic equipment, certainly, if after automotive electronics unit receives the address read requests,
Periodically issue assertive signal, the test frame that the ID after assignment is 666 also will by data periodicity sending to diagnostic equipment, one
As be set as 10 milliseconds, to observe the change procedure of data in address.It repeats the above process, next address reading can be carried out
Take the address read work in request.In addition, if to other kinds of controller carry out problem investigation, such as industrial control unit (ICU),
Its CAN bus and UDS diagnosing protocol will be adaptively adjusted, such as CAN bus is transformed to the total of LIN, UART, SPI type
Line, but overall scheme is consistent with solution described above.
The present invention utilizes diagnostic equipment, by existing CAN bus and UDS diagnosing protocol, sends out to vehicle electronic control unit
Address read requests are sent, which includes one or more address that problem investigation needs to check, automotive electronics
After control unit receives and parses through, is issued to data processing module or periodically issue assertive signal, by random access memory
Test of the corresponding data assignment being stored in one or more address to pre-set CAN message structure in device RAM
Frame, be sent to by CAN bus be perhaps periodically sent to receive object for example diagnostic equipment or other can receive to test frame
Instrument, so that commissioning staff can check the variation of data and data in any effective address related with problem
Journey, quick positioning question place improve problem and check efficiency, save commissioning staff to vehicle electronic control unit problem after entrucking
The working time of investigation improves its working efficiency.
Although specific embodiments of the present invention have been described above, it will be appreciated by those of skill in the art that these
It is merely illustrative of, without departing from the principle and essence of the present invention, a variety of changes can be made to these embodiments
It more or modifies, therefore, protection scope of the present invention is defined by the appended claims.
Claims (10)
1. a kind of data reading system for the vehicle electronic control unit software debugging after entrucking, it is characterised in that: including
Diagnostic equipment, the diagnostic equipment are communicated by CAN bus, in conjunction with UDS diagnosing protocol and vehicle electronic control unit, the automobile electricity
Sub-control unit includes data processing module and random access memory ram,
The diagnostic equipment sends address read requests to vehicle electronic control unit by CAN bus, in conjunction with UDS diagnosing protocol,
After the vehicle electronic control unit receives address read requests, assertive signal is issued to data processing module, at the data
It manages module and receives assertive signal, it, will be right in random access memory ram according to the address that the parsing address read requests obtain
In the data assignment to test frame for answering the address, the test frame after assignment is sent to diagnostic equipment by CAN bus.
2. the data reading system according to claim 1 for the vehicle electronic control unit software debugging after entrucking,
It is characterized by: the test frame uses CAN message structure type, the mark of identifier ID and existing all CAN messages
It is different to accord with ID.
3. the data reading system according to claim 1 for the vehicle electronic control unit software debugging after entrucking,
It is characterized by: the number of the address of the address read requests is no more than eight.
4. the data reading system according to claim 1 for the vehicle electronic control unit software debugging after entrucking,
It is characterized by: periodically issuing tax to data processing module after the vehicle electronic control unit receives address read requests
Value signal, the test frame after assignment pass through CAN bus periodicity sending to diagnostic equipment.
5. a kind of based on the reading data system described in claim 1 for the vehicle electronic control unit software debugging after entrucking
The method for reading data of system, it is characterised in that the following steps are included:
Step 1: the test frame of a CAN message structure type is preset, the identifier ID of the test frame and existing institute
There is the identifier ID of CAN message different；
Step 2: diagnostic equipment is asked by CAN bus, in conjunction with UDS diagnosing protocol to vehicle electronic control unit transmission address reading
It asks；
Step 3: the vehicle electronic control unit receives the address read requests, according to the parsing address read requests
Obtained address, periodically by the data assignment to test frame for correspond to address in random access memory ram, periodicity
Ground is sent to diagnostic equipment by CAN bus；
Step 4: repeating the reading for carrying out the address corresponding data of next address read requests Step 2: three.
6. the method for reading data according to claim 5 for the vehicle electronic control unit software debugging after entrucking,
It is characterized by: periodically by the data assignment to test frame for correspond to address in random access memory ram, periodicity
Ground is set as 10 milliseconds by the period that CAN bus is sent to diagnostic equipment.
7. a kind of computer readable storage medium, for the vehicle electronic control unit software debugging after entrucking, which is characterized in that
Including the computer program being used in combination with diagnostic equipment, the computer program can be executed by processor and complete following steps:
Using diagnostic equipment, address read requests are sent to vehicle electronic control unit by CAN bus, in conjunction with UDS diagnosing protocol；
The address read requests are received and parsed through, automotive electronics control corresponding with the address in the address read requests is read
Data in the RAM of unit processed；
By the data assignment into preset test frame, diagnostic equipment is sent to by CAN bus.
8. computer readable storage medium according to claim 7, it is characterised in that: periodically read and the address
The data that address in the RAM of the corresponding vehicle electronic control unit in address in read requests is included；
By the data, periodically assignment is sent to diagnostic equipment by CAN bus into preset test frame.
9. a kind of electronic equipment for the vehicle electronic control unit software debugging after entrucking, which is characterized in that including one
Or multiple processors, memory, and one or more programs, wherein one or more programs are stored in memory
In, and be configured to be executed by one or more of processors, described program includes the instruction for executing following steps:
Using external diagnostic equipment, address reading is sent to vehicle electronic control unit by CAN bus, in conjunction with UDS diagnosing protocol
Request；
The address read requests are received and parsed through, automotive electronics control corresponding with the address in the address read requests is read
Data in the RAM of unit processed；
By the data assignment into preset test frame, diagnostic equipment is sent to by CAN bus.
10. the electronic equipment according to claim 9 for the vehicle electronic control unit software debugging after entrucking, special
Sign is: in the RAM for periodically reading vehicle electronic control unit corresponding with the address in the address read requests
Data；
By the data, periodically assignment is sent to diagnostic equipment by CAN bus into preset test frame.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810707675.8A CN108965052A (en) | 2018-07-02 | 2018-07-02 | A kind of data reading system for the electronic control unit software debugging after entrucking |
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| CN201810707675.8A CN108965052A (en) | 2018-07-02 | 2018-07-02 | A kind of data reading system for the electronic control unit software debugging after entrucking |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111596638A (en) * | 2019-02-20 | 2020-08-28 | 南京天擎汽车电子有限公司 | Vehicle troubleshooting method, device, equipment and computer readable storage medium |
| CN111983991A (en) * | 2019-05-24 | 2020-11-24 | 上海博泰悦臻网络技术服务有限公司 | Debugging method and system for vehicle-mounted micro control unit |
| CN112180891A (en) * | 2020-08-24 | 2021-01-05 | 东风电驱动系统有限公司 | ECU offline operation fault troubleshooting and analyzing method |
| CN112866327A (en) * | 2020-11-03 | 2021-05-28 | 联合汽车电子有限公司 | Vehicle data transmission method, device, equipment, system and storage medium |
| CN112965468A (en) * | 2021-02-22 | 2021-06-15 | 上海星融汽车科技有限公司 | Diagnostic data sending method, receiving method and system for vehicle ECU |
| CN113448304A (en) * | 2020-03-27 | 2021-09-28 | 广州汽车集团股份有限公司 | Vehicle ECU diagnostic method and system |
| CN113885997A (en) * | 2021-10-19 | 2022-01-04 | 深圳市元征科技股份有限公司 | Dialog box display method and device, electronic equipment and storage medium |
| CN114168501A (en) * | 2021-12-01 | 2022-03-11 | 重庆金康赛力斯新能源汽车设计院有限公司 | Data reading method, data writing method and data reading and writing system |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111596638A (en) * | 2019-02-20 | 2020-08-28 | 南京天擎汽车电子有限公司 | Vehicle troubleshooting method, device, equipment and computer readable storage medium |
| CN111596638B (en) * | 2019-02-20 | 2021-08-13 | 南京天擎汽车电子有限公司 | Vehicle troubleshooting method, device, equipment and computer readable storage medium |
| CN111983991B (en) * | 2019-05-24 | 2022-09-16 | 上海博泰悦臻网络技术服务有限公司 | Debugging method and system for vehicle-mounted micro control unit |
| CN111983991A (en) * | 2019-05-24 | 2020-11-24 | 上海博泰悦臻网络技术服务有限公司 | Debugging method and system for vehicle-mounted micro control unit |
| CN113448304B (en) * | 2020-03-27 | 2023-02-28 | 广州汽车集团股份有限公司 | Vehicle ECU diagnostic method and system |
| CN113448304A (en) * | 2020-03-27 | 2021-09-28 | 广州汽车集团股份有限公司 | Vehicle ECU diagnostic method and system |
| CN112180891A (en) * | 2020-08-24 | 2021-01-05 | 东风电驱动系统有限公司 | ECU offline operation fault troubleshooting and analyzing method |
| CN112180891B (en) * | 2020-08-24 | 2021-10-01 | 东风电驱动系统有限公司 | ECU offline operation fault troubleshooting and analyzing method |
| CN112866327A (en) * | 2020-11-03 | 2021-05-28 | 联合汽车电子有限公司 | Vehicle data transmission method, device, equipment, system and storage medium |
| CN112866327B (en) * | 2020-11-03 | 2023-08-11 | 联合汽车电子有限公司 | Method, device, equipment, system and storage medium for transmitting vehicle data |
| CN112965468A (en) * | 2021-02-22 | 2021-06-15 | 上海星融汽车科技有限公司 | Diagnostic data sending method, receiving method and system for vehicle ECU |
| CN113885997A (en) * | 2021-10-19 | 2022-01-04 | 深圳市元征科技股份有限公司 | Dialog box display method and device, electronic equipment and storage medium |
| CN114168501A (en) * | 2021-12-01 | 2022-03-11 | 重庆金康赛力斯新能源汽车设计院有限公司 | Data reading method, data writing method and data reading and writing system |
| CN114168501B (en) * | 2021-12-01 | 2024-07-16 | 重庆金康赛力斯新能源汽车设计院有限公司 | Data reading method, data writing method and data reading and writing system |
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Application publication date: 20181207 |