CN111638874B - Matlab software-based automobile controller coding information writing and reading method - Google Patents
Matlab software-based automobile controller coding information writing and reading method Download PDFInfo
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- G—PHYSICS
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- G06F8/40—Transformation of program code
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- G06F8/44—Encoding
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- 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
- H04L12/40006—Architecture of a communication node
- H04L12/40013—Details regarding a bus controller
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- 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]
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- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40215—Controller Area Network CAN
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- 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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Abstract
The invention relates to the technical field of automobiles, discloses a method for writing and reading encoding information of an automobile controller based on Matlab software, and solves the technical problems that in the prior art, a diagnosis program needs to be adapted and the cost for synchronously developing diagnostic equipment is high, and the method comprises the following steps: defining the coded message and related request and read command signals in a can protocol in a cycle form or an event form, and then transmitting the coded message and related request and read command signals to a bus through can communication equipment; the Matlab high-level programming language tool is used for programming, and the written Matlab high-level programming language program is uploaded to the Matlab software tool background to be used as a script; and setting a writing coding module, a reading coding module and a reset button on a GUI interface of the designed Matlab software platform, wherein the functions of the writing coding module, the reading coding module and the reset button are realized through a background Matlab high-level programming language script. According to the technical scheme, the aim of conveniently writing and reading the internal coding information of the controller is achieved based on the Matlab software platform and the development script of the Matlab high-level programming language.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to an automobile controller coding information writing and reading method based on Matlab software.
Background
In the prior art, aiming at the method for writing and reading the internal information of the automobile controller, few current documents and patents are published, and the method has little relevance with the method disclosed by the invention, and is mostly a method for reading the state signal (variable) of the controller. The invention discloses a power battery state signal acquisition method, a power battery state signal acquisition system and an electric automobile, which are disclosed in Chinese patent publication No. CN106183850A, wherein the internal information of an automobile controller is acquired by reading a state signal of the controller.
In addition, in the conventional technology, internal information of the automobile controller is also generally obtained through a diagnostic method, typically through a UDS diagnostic protocol, a diagnostic program of the controller is developed, and diagnostic apparatus devices are synchronously developed to read the internal code information of the controller.
However, this method in the conventional art consumes much time and labor to develop diagnostic apparatus equipment, and is relatively specialized and can only be used to read the information encoded inside the controller.
Disclosure of Invention
Aiming at the technical problems that the diagnostic program needs to be adapted and the cost for synchronously developing the diagnostic equipment is high in the background technology, the invention is based on a Matlab software platform and a development script of a Matlab advanced programming language, thereby achieving the purpose of conveniently writing and reading the internal coding information of the controller.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the method for writing and reading the encoding information of the automobile controller based on Matlab software comprises the following steps:
s1: defining the coded message and related request and read command signals in a can protocol in a cycle form or an event form, and then transmitting the coded message and related request and read command signals to a bus through can communication equipment;
s2: the Matlab high-level programming language tool is used for programming, and the written Matlab high-level programming language program is uploaded to the Matlab software tool background to be used as a script;
s3: setting a writing coding module, a reading coding module and a reset button on a GUI interface of a designed Matlab software platform, wherein the functions of the writing coding module, the reading coding module and the reset button are realized through a background Matlab high-level programming language script;
the writing coding module comprises a coding input box and a writing coding operation button;
the reading coding module comprises a coding display frame and a reading coding operation button;
s4: typing in encoded data in an encoded input box, pressing an operation button of writing encoding, and finishing the operation of writing encoding after the GUI displays that the writing is successful;
s5: pressing the operation button of reading the code, and displaying the code data in the code display frame, namely finishing the reading operation of the code.
According to the technical scheme, the method for writing and reading the encoded information of the automobile controller is realized based on the Matlab software and scripts written by the Matlab high-level programming language, the steps of writing and reading are simple, and the functions of writing and reading the encoded information of the controller are realized by combining a common can communication protocol (an ISO11898 or J1939 main stream protocol interface) and taking a Matlab GUI programming interface as a carrier. The process of reading the code can solve the problems that the code information is read by a diagnosis method in the prior art, the development of the diagnosis program of the controller is labor-consuming, and the manpower and material resources are consumed for synchronously developing the internal code of the controller read by the diagnostic equipment. In addition, the method disclosed by the invention has a wide application range, can not only realize the reading and writing of battery coding information, but also realize the writing and reading of the solidifying information such as the electric VIN code, the software and hardware version number, the part number, the supplier code and the like. Therefore, the scheme is simple and the effect is obvious.
The invention is further provided with: the writing method in S4 comprises the following steps:
(1) The matlab program is enabled to read in signal list/matrix information of can protocol, the information comprises specific signals required by writing codes, and different requirements of different vehicle types on the signals can be met;
(2) Reading coded data typed in a coding input box from left to right by a matlab program, and converting the coded data into 16-system message data;
(3) The writing code is required by sending a can message request command of BMS_write_RQ;
(4) Coding information is written in through a can message of BMS_write_Data, and coding Data is written in to be Data1;
(5) After the controller information is written successfully, the controller sends a message of BMS_write_success response.
Through the technical scheme: "desired specific signal" refers to a signal frame containing the specific signal required for writing code, including but not limited to:
a) Can signal frame for requesting writing/reading code
b) Can signal frame responsible for transmitting coded signals
c) The controller feeds back whether to allow writing/reading of the encoded signal frame
d) The controller feeds back whether the encoded signal frame was successfully written/read
e) The above signal frame may be Event (Event type) or Cycle (period type).
The invention is further provided with: in the step (3) of requiring writing coding, the controller feeds back whether writing coding is allowed or not, and if so, the controller performs the next step, and if not, checks and ensures that the command of writing coding is correct or checks whether can communication is normal or not.
The invention is further provided with: the reading method comprises the following steps:
(1) Allowing the matlab program to read in can signal information, wherein the information comprises information of specific signals required by reading codes so as to adapt to different requirements of different vehicle types on the signals;
(2) Transmitting a can report Wen Zhiling ID named BMS_Read_RQ in the form of an event of which the acquisition code is an event through can card equipment;
(3) Reading 16-system coded information through a can message command named BMS_Read_Data, wherein the Read coded Data is Data2;
(4) If the controller information is successfully Read, the controller sends a message with the name of BMS_Read_Success, wherein the message is the name of BMS_Read_Success, and the response is successful;
(5) The position, accuracy and offset defined for the signal according to can protocol are resolved into physical code values and displayed in the "code display box" text box of matlab GUI.
Through the technical scheme: "desired specific signal" refers to a signal frame containing the specific signal required for writing code, including but not limited to:
a) Can signal frame for requesting writing/reading code
b) Can signal frame responsible for transmitting coded signals
c) The controller feeds back whether to allow writing/reading of the encoded signal frame
d) The controller feeds back whether the encoded signal frame was successfully written/read
e) The above signal frame may be Event (Event type) or Cycle (period type).
The invention is further provided with: the reading method comprises the following steps:
(1) Allowing the matlab program to read in can signal information, wherein the information comprises information of specific signals required by reading codes so as to adapt to different requirements of different vehicle types on the signals;
(2) Reading 16-system coded information through a can message command named BMS_Read_Data, wherein the Read coded Data is Data2;
(3) If the controller information is successfully Read, the controller sends a message with the name of BMS_Read_Success, wherein the message is the name of BMS_Read_Success, and the response is successful;
(4) The position, accuracy and offset defined for the signal according to can protocol are resolved into physical code values and displayed in the "code display box" text box of matlab GUI.
By the above technical solution, the reading method has two kinds, and the reason is that, depending on the type of the controller, if the controller sends the code in the form of Cycle, the step of (2) "sending a can report Wen Zhiling ID" named bms_read_rq of obtaining the coded event form through the can card device "can be omitted. If the transmission of the code by the controller is in the event form, the step (2) of transmitting a can report Wen Zhiling ID called bms_read_rq for obtaining the encoded event form through the can card device is required to be added.
The invention is further provided with: in the step of reading the 16-bit coded information, the controller feeds back whether the code is allowed to be read, and the next step is carried out under the allowed condition, and whether the code reading command is correct or whether can communication is normal can be checked under the disallowed condition.
In summary, the invention has the following beneficial effects:
(1) The method for reading the coded information does not need to develop a diagnosis program in advance, namely does not need to develop diagnostic equipment, and saves the software investment of high-cost equipment;
(2) The method for reading the coded information is not a special method, not only can read the state information of the controller, but also can be expanded to read the coded information (such as VIN number of a vehicle frame, specific version information and the like) in the controller;
(3) Because a new energy automobile Battery Management System (BMS) needs to upload battery codes to a national platform according to the requirements of GB 32960, the method can meet the requirements of the national standard, and the requirements of efficiently and accurately writing and reading the battery codes;
(4) The development tool is mature, matlab advanced programming language is written, converted into exe files, and the tool can be directly operated under the condition that Matlab is not installed;
(5) High reading efficiency and accurate reading result.
Drawings
FIG. 1 is a block diagram of a write encoding process;
fig. 2 is a read encoding flow diagram.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but embodiments of the present invention are not limited thereto.
Example 1
A method for writing and reading encoding information of an automobile controller based on Matlab software generally comprises the following steps:
s1: defining the coded message and related request and read command signals in a can protocol in an event mode, and then transmitting the coded message and related request and read command signals to a bus through can communication equipment;
s2: the Matlab high-level programming language tool is used for programming, and the written Matlab high-level programming language program is uploaded to the Matlab software tool background to be used as a script;
s3: setting a writing coding module, a reading coding module and a reset button on a GUI interface of a designed Matlab software platform, wherein the functions of the writing coding module, the reading coding module and the reset button are realized through a background Matlab high-level programming language script;
the writing coding module comprises a coding input box and a writing coding operation button;
the reading coding module comprises a coding display frame and a reading coding operation button;
s4: typing in encoded data in an encoded input box, pressing an operation button of writing encoding, and finishing the operation of writing encoding after the GUI displays that the writing is successful;
s5: pressing the operation button of reading the code, and displaying the code data in the code display frame, namely finishing the reading operation of the code.
As shown in fig. 1, the writing method in S4 includes the steps of:
(1) The matlab program is enabled to read in signal list/matrix information of can protocol, the information comprises specific signals required by writing codes, and different requirements of different vehicle types on the signals can be met;
(2) Reading coded data typed in a coding input box from left to right by a matlab program, and converting the coded data into 16-system message data;
(3) The writing code is required by sending a can message request command of BMS_write_RQ;
(4) Coding information is written in through a can message of BMS_write_Data, and coding Data is written in to be Data1;
(5) After the controller information is written successfully, the controller sends a message of BMS_write_success response.
In the step (3) of requiring writing coding, the controller feeds back whether writing coding is allowed or not, and if so, the controller performs the next step, and if not, checks and ensures that the command of writing coding is correct or checks whether can communication is normal or not.
As shown in fig. 2, the reading method in S5 includes the steps of:
(1) Allowing the matlab program to read in can signal information, wherein the information comprises information of specific signals required by reading codes so as to adapt to different requirements of different vehicle types on the signals;
(2) Transmitting a can report Wen Zhiling ID named BMS_Read_RQ in the form of an event of which the acquisition code is an event through can card equipment;
(3) Reading 16-system coded information through a can message command named BMS_Read_Data, wherein the Read coded Data is Data2;
(4) If the controller information is successfully Read, the controller sends a message with the name of BMS_Read_Success, wherein the message is the name of BMS_Read_Success, and the response is successful;
(5) The position, accuracy and offset defined for the signal according to can protocol are resolved into physical code values and displayed in the "code display box" text box of matlab GUI.
When in application, the method comprises the following steps: if the method is applied to a light-truck pure electric vehicle type automobile, the function of writing 12-bit battery codes is needed.
A 12-bit battery code can be input in the left code input box text box; clicking the "write in code" operation button, the function realized is to let matlab program read in can matrix information to adapt to different demands of different motorcycle types on signals. Then, a written coded instruction ID is sent through a common can card device.
The 16-system coded information is written through a specific can message, for example, the can message named BMS_write_Data is a Write command, and the written coded Data is Data1.
If the information of the controller is written successfully, the controller sends a message of response Success, namely a message named BMS_write_Success, and the GUI simultaneously displays the following prompt of' encoding Write Success! ".
Example 2
The method for writing and reading the encoding information of the automobile controller based on Matlab software is basically the same as that in the embodiment 1, and the difference is that in the step S1: the encoded messages and associated requests, read command signals are defined in the can protocol in the form of Cycle, and in embodiment 1 in the form of event.
Meanwhile, since the controller sends the code in the form of Cycle, the steps of the reading method may omit step (2) in embodiment 1, and specifically include the following steps:
(1) Allowing the matlab program to read in can signal information, wherein the information comprises information of specific signals required by reading codes so as to adapt to different requirements of different vehicle types on the signals;
(2) Reading 16-system coded information through a can message command named BMS_Read_Data, wherein the Read coded Data is Data2;
(3) If the controller information is successfully Read, the controller sends a message with the name of BMS_Read_Success, wherein the message is the name of BMS_Read_Success, and the response is successful;
(4) The position, accuracy and offset defined for the signal according to can protocol are resolved into physical code values and displayed in the "code display box" text box of matlab GUI.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to those skilled in the art may be considered as protecting the present invention without departing from the principles thereof.
Claims (3)
1. The method for writing and reading the encoding information of the automobile controller based on Matlab software is characterized by comprising the following steps of:
s1: defining the coded message and related request and read command signals in a can protocol in a cycle form or an event form, and then transmitting the coded message and related request and read command signals to a bus through can communication equipment;
s2: programming a program by using a Matlab high-level programming language, and uploading the programmed Matlab language program to a Matlab software platform background to serve as a script;
s3: the method comprises the steps that a writing coding module, a reading coding module and a reset button are arranged on a Matlab software platform GUI interface, and the functions of the writing coding module, the reading coding module and the reset button are realized through scripts of a Matlab software platform background;
the writing coding module comprises a coding input box and a writing coding operation button;
the reading coding module comprises a coding display frame and a reading coding operation button;
s4: typing in encoded data in an encoded input box, pressing an operation button of writing encoding, and finishing the operation of writing encoding after the GUI displays that the writing is successful; the writing method in S4 comprises the following steps: (1) A script program of a background of the Matlab software platform is enabled to read in signal list/matrix information of can protocol, the information comprises specific signals required by writing codes, and the specific signals can adapt to different requirements of automobile controllers of different automobile types on the signals; (2) The script program of the Matlab software platform background reads the coded data typed in the coding input box from left to right and converts the coded data into 16-system message data; (3) A can message request command of BMS_write_RQ is sent through can card equipment, and a writing code is required; (4) The method comprises the steps that a can message of BMS_write_Data is sent through can card equipment to Write coding information, and the written coding Data is Data1; (5) After the controller coding information is written, the controller sends a message of BMS_write_success which is responded successfully; wherein, the required specific signal refers to a specific signal frame containing the required writing code, including but not limited to: a) Request to write/read encoded can signal frames; b) Can signal frames responsible for transmitting the encoded signal; c) The controller feeds back whether to allow writing/reading of the encoded signal frame; d) The controller feeds back whether the encoded signal frame is successfully written/read; e) The above signal frame may be Event (Event type) or Cycle (period type);
s5: pressing a read code operation button, and displaying coded data in a code display frame, namely finishing the read operation of the code; the reading method comprises the following steps: (1) Enabling a script program of a Matlab software platform background to read can signal information, wherein the information comprises information of specific signals required by reading codes so as to adapt to different requirements of different vehicle types on the signals; (2) Transmitting a can report Wen Zhiling ID named BMS_Read_RQ in the form of an event of which the acquisition code is an event through can card equipment; (3) Then, a can message command named BMS_Read_Data is sent through can card equipment to Read 16-system coding information, and the Read coding Data is Data2; (4) The controller finishes information reading, and the controller sends a message with the name of BMS_Read_Success, wherein the message is successful in response; (5) Analyzing the position, precision and offset defined by the signal into physical coding values according to can protocol, and displaying the physical coding values in a text box of a coding display box of a GUI of matlab; or (b)
The reading method comprises the following steps: (1) Enabling a script program of a Matlab software platform background to read can signal information, wherein the information comprises information of specific signals required by reading codes so as to adapt to different requirements of different vehicle types on the signals; (2) The method comprises the steps that a can message command named BMS_Read_Data is sent through can card equipment to Read 16-system coding information, and the Read coding Data is Data2; (3) The controller finishes information reading, and the controller sends a message with the name of BMS_Read_Success, wherein the message is successful in response; (4) The position, accuracy and offset defined for the signal according to can protocol are resolved into physical code values and displayed in the "code display box" text box of matlab GUI.
2. The Matlab software-based method for writing and reading encoding information of an automobile controller according to claim 1, wherein the method comprises the following steps: in the step (3) of requiring writing coding, the controller feeds back whether the writing coding is allowed or not;
under the allowable condition, carrying out the next step;
if not, checking and ensuring whether the command of writing the code is correct or whether can communication is normal.
3. The Matlab software-based method for writing and reading encoding information of an automobile controller according to claim 1, wherein the method comprises the following steps: in the step of reading 16-system coded information, the controller feeds back whether the code is allowed to be read or not;
under the allowable condition, carrying out the next step;
if not, it can check whether the command to read the code is correct or can check whether the can communication is normal.
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| CN110908678A (en) * | 2019-12-04 | 2020-03-24 | 奇瑞汽车股份有限公司 | Automobile controller software configuration writing method |
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| CN102088603A (en) * | 2010-12-31 | 2011-06-08 | 北京大学深圳研究生院 | Entropy coder for video coder and implementation method thereof |
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