CN107024926A - The simulation system and its analogy method of a kind of automobile ECU - Google Patents
The simulation system and its analogy method of a kind of automobile ECU Download PDFInfo
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Abstract
The invention discloses a kind of simulation system of automobile ECU and its analogy method, belong to computer software technology and vehicle diagnosis field.A kind of simulation system of automobile ECU, including：Main control module, Premium Features module, serial communication modular and slave computer module；Main control module, loading configuration file and setting initiation parameter, verification data, and transfer data to Premium Features module；Premium Features module, is connected with serial communication modular, and online real time modifying ECU replys data, and transfers data to serial communication modular；Algorithm is determined according to the diagnostic result that genuine diagnostic device feeds back；Serial communication modular, is connected with slave computer module by Serial Port Line, enters row data communication；Slave computer module, is connected with genuine diagnostic device by bus, enters row data communication.And analogy method is disclosed, the demand in development process to vehicle of sampling can be greatly reduced by the present invention, while development efficiency is also improved, the cost of reduction sampling vehicle.
Description
Technical field
The present invention relates to computer software technology and vehicle diagnosis field, specifically, it is related to a kind of simulation of automobile ECU
System and analogy method.
Background technology
In the R＆D process of automobile fault diagnostic apparatus, diagnostic equipment usually needs and is developed the ECU of vehicle to carry out data
Communication, diagnostic equipment sends diagnostic command to automobile ECU, and automobile ECU replys corresponding diagnostic data to the order.And diagnostic equipment
Need the data of integrated different automobile types to adapt to more multi-vehicle-type, the market demand could be met.And how to collect different vehicle numbers
According to being one of key link of R＆D process.At present, mainly carried out for a long time by directly finding the real vehicle of all related models
Comprehensive data sampling and test.This existing common method cost is high, and data are poor for applicability, while the sample of real vehicle sampling
Notebook data has unicity, it is impossible to meet the demand of enriched data, moreover, this method causes R＆D costs high, research and development week
Phase is long.
There is a method in which being exactly to be carried out by design software simulated automotive ECU, still, ECU technology is simulated also at present
It is in the junior stage.Design is a kind of efficiently, the simulation system of the automobile ECU of data strong applicability and analogy method can reduce vapour
The R＆D costs of car diagnostic device, shorten the R＆D cycle and improve its efficiency of research and development, to the edition upgrading of automobile diagnostic software and
Product capability lifting is significant.
The content of the invention
To overcome above-mentioned technical problem, the present invention provides a kind of simulation system and its analogy method of automobile ECU.
In order to solve the above technical problems, the present invention is adopted the following technical scheme that:
A kind of simulation system of automobile ECU, including：Main control module, Premium Features module, serial communication modular and slave computer
Module；
Main control module, loading configuration file and setting initiation parameter, verification data, and transfer data to Premium Features
Module；
Premium Features module, is connected with serial communication modular, and online real time modifying ECU replys data, and data are transmitted
To serial communication modular；Algorithm is determined according to the diagnostic result that genuine diagnostic device feeds back；
Serial communication modular, is connected with slave computer module by Serial Port Line, enters row data communication；
Slave computer module, is connected with genuine diagnostic device by bus, enters row data communication.Serial Port Line can be used
RS232 Serial Port Lines, bus can use OBDII buses.
Further technical scheme, described Premium Features module, including byte analysis module, special value reply mould
Block, batch modification reply module, definite value increase and decrease and reply module, algorithm correction verification module；
Byte analysis module, replys the data in data to the ECU that main control module is transmitted and is analyzed by byte, and judge
Valid data position and data algorithm types, applicable modification mode is selected by number according to valid data position and data algorithm types
According to being sent to, special value replys module or batch modification replys module or definite value increase and decrease reply module and replys data to change ECU
Middle valid data；And the changing rule of the corresponding diagnostic result of genuine diagnostic device is analyzed, and obtain data algorithm；
Special value replys module, and special value is inputted one by one to each byte in valid data position, and by data
It is sent to serial communication modular；
Batch modification replys module, and multiple bytes in valid data position are inputted with specific identical numerical value simultaneously, and will
Data are sent to serial communication modular；
Module is replied in definite value increase and decrease, and increase and decrease operation is carried out according to set value to the byte in valid data position, and by data
It is sent to serial communication modular；
Algorithm correction verification module, the algorithm that byte analysis module is determined is built on diagnostic device leaved for development, will be waited out
The diagnostic result of the diagnostic result and genuine diagnostic device of the diagnostic device feedback of hair is contrasted, the peak of checking data,
Minimum and median, such as error are no more than 0.5%, then the data algorithm that byte analysis module is determined is correct.
Further technical scheme, the determination method of described data algorithm is that n groups ECU is replied into significant figure in data
According to diagnostic result input algorithm model y=G (a, b, the c ... with genuine diagnostic device；X), and model parameter value is obtained, x is ECU
Valid data in data are replied, y is the diagnostic result of genuine diagnostic device, and n is the number of parameter a, b, c ... in algorithm model.
Further technical scheme, described data algorithm type includes direct calculation, switching value mode, the side of tabling look-up
Formula, ASCII character character Display mode, hexadecimal, decimal system mode, binary mode, particular form and time mode.
Further technical scheme, described special value reply module special value include 00,7F, 80, FF,
01、；
The increase and decrease operation that described definite value increase and decrease replys in module is to pass through increment or depreciation modification numerical value, increment to byte
Amount and depreciation amount are：+01、+10、-01、-10.
Further technical scheme, described main control module includes profile module, data check module and initialization
Parameter module；
Profile module, loads ECU data configuration file, transfers data to initiation parameter module；
Initiation parameter module, sets the serial port and baud rate and OBDII protocol parameters of serial ports RS232 messaging parameters,
And transfer data to serial communication modular；
Data check module, the data to serial communication modular are verified, and communication data is examined by interior method of calibration
Whether information changes in communications, by outer verification to data except all bytes of check bit in itself are according to selected side
Whether formula is verified, changed in communications for inspection data, if it is interior inspection and it is outer verification all if by number
According to being sent to Premium Features module.Two kinds of verification modes of simultaneous selection can improve verification redundancy, it is ensured that data do not have in the communications
There is error code.
Interior verification and outer method of calibration in further technical scheme, described data check module is including the use of former number
According to a, byte and, a byte is negated, a byte goes benefit, a byte XOR, a byte CRC check, a byte except it is second from the bottom,
BENZ_5BPS, serial ports direct communication, card spy special, Gaz_0d, two bytes verify and.
Further technical scheme, described configuration file is designed using XML language, each configuration file correspondence one
Vehicle ECU, stores the ECU communication protocols initiation parameter, diagnostic equipment and institute's functional communication data.
Further technical scheme, described configuration file is designed using hierarchical structure, and one-level label is used<AUTO>, two
Level label is used<INIT_IO>With<COMM>, the use of three-level label<RECE>、<SEND>With<CMD>；Described<INIT_IO>
The content of text of label includes equipment initialization information；<COMM>The content of text of label includes the communication data of all orders；
Described label<CMD>It is protocol initializing parameter command；Described<RECE>Label is to send to order for diagnostic device；<
SEND>Label is that ECU returns to diagnostic device order,<RECE>With<SEND>There are attribute HIDE, SD/RD in label.By XML languages
This level label design called the turn is corresponding with the hierarchical structure of systemic-function in diagnostic device, can simplify library file and program
Code, improves program operational efficiency.
A kind of analogy method of automobile ECU, comprises the following steps：
A. main control module loading is modeled ECU configuration file, sets initiation parameter；
B. Premium Features module is obtained from main control module replys data, and the online ECU that changes in real time replys data, by data
It is sent to serial communication modular；
C. serial communication modular sends ECU reply Data Datas to slave computer module；
D. slave computer module sends ECU replies data to genuine diagnostic device, and genuine diagnostic device carries out diagnostic process,
And diagnostic result is obtained, diagnostic result is fed back into Premium Features module；Diagnostic process is diagnostic device according to the mould received
Intend the data of DTC, data flow, motion test and specific function that ECU is replied to show corresponding diagnostic result, and perform phase
The data set answered；
E. Premium Features module analysis diagnostic result, obtains data algorithm；
F. the data algorithm of determination is built into diagnostic device leaved for development, according to the diagnosis of diagnostic device leaved for development
As a result the diagnostic result with genuine diagnostic device is compared, and verifies peak, minimum and the median of data, and such as error is no more than
0.5%, then the data algorithm that byte analysis module is determined is correct；If error is more than 0.5%, step b is performed.
In further technical scheme, described step b, line changes ECU in real time, which replys the methods of data, is, Premium Features
Module is first replied the data in data to the ECU that main control module is transmitted and analyzed by byte, and judges valid data position sum
According to algorithm types, selection is applicable special value and replys mode or batch modification reply mode or definite value increase and decrease reply mode to change
ECU replys data.
Beneficial effect
Compared with prior art, the invention has the advantages that：
1st, the present invention can use under VS2012 platforms and be based on event driven VC++ too developments ECU simulation systems,
Software development is applied in the R＆D process of diagnostic device, while being related to vehicle diagnosis agreement theory and application technology and file
Type database technology, embodies multidisciplinary and multi-field intercrossing.
2nd, the present invention simulates ECU by online modification and replys data, replaces real vehicle to parse the data of each diagnostic function,
Compared with use automobile ECU method general at present needs a large amount of automobile ECUs, method provided by the present invention can be different by loading
The configuration file of agreement realizes simulation different type automobile ECU, while replying data realization simulation same type by changing ECU
The different automobile ECUs individual of automobile ECU.Therefore the sample data of vehicle diagnosis can be largely obtained, realizes the various of sample data
Property, and then data algorithm can be efficiently and rapidly parsed, and improve the accuracy of data algorithm.
3rd, by the system and method for the present invention, the sampled data of some version vehicle of a certain car system can be divided
Analysis, obtains its data algorithm, the sample data of other version vehicles of car system is obtained according still further to the data algorithm of gained.Thus
The demand to vehicle of sampling in development process can be greatly reduced, while also improve development efficiency, reduction sampling vehicle into
This.
4th, online modification ECU of the present invention, which replys data mode, has diversity, including special value is replied mode, repaiied in batches
Compound formula, definite value increase and decrease reply mode are changeed back, suitable reply mode can be selected according to different data, these modes make
ECU data must be simulated and reply easy, quick, flexible, while the data algorithm species included is more, various diagnostic functions are met
ECU data response, the parsing to multibyte many condition data algorithm is highly effective, can more efficiently observe that different automobile types are adopted
Sample data.
5th, be found through experiments that, although be not automobile ECU it is functional can using the present invention system and method, but have
Nearly 80% functional development can be used, and can greatly improve development efficiency, shorten the construction cycle, reduced measuring car risk and developed into
This.
6th, the present invention uses modularized design, and the scalability of function is strong；Using interior verification and outer verification, data communication
Reliability is high；Simultaneously higher to data algorithm resolution, obtained data algorithm is accurate so that R＆D costs are reduced, research and development week
Phase shortens, and data strong applicability.
Brief description of the drawings
Fig. 1 is a kind of structure chart of the simulation system of automobile ECU of the invention；
Fig. 2 is the workflow diagram of Premium Features module；
Fig. 3 is a kind of flow chart of the analogy method of automobile ECU of the invention.
Label in figure：1st, main control module, 2, Premium Features module, 3, serial communication modular, 4, slave computer module, 5, genuine
Diagnostic device, 6, diagnostic device to be developed, 1-1, profile module, 1-2, initiation parameter module, 1-3, data check mould
Block, 2-1 byte analysis modules, 2-2, special value reply module, and 2-3, batch modification reply module, and 2-4, definite value increase and decrease are replied
Module, 2-5, algorithm correction verification module.
Embodiment
The present invention is further detailed explanation with reference to the accompanying drawings and examples.
Embodiment
As shown in figure 1, a kind of simulation system of automobile ECU, including：Main control module 1, Premium Features module 2, serial communication
Module 3 and slave computer module 4；
Main control module 1, loading configuration file and setting initiation parameter, verification data, and transfer data to senior work(
Can module 2；
Premium Features module 2, is connected with serial communication modular 3, and online real time modifying ECU replys data, and data are passed
Deliver to serial communication modular 3；Algorithm is determined according to the diagnostic result that genuine diagnostic device 5 feeds back；
Serial communication modular 3, is connected with slave computer module 4 by Serial Port Line, enters row data communication；
Slave computer module 4, is connected with genuine diagnostic device 5 by bus, enters row data communication.Serial Port Line can be used
RS232 Serial Port Lines, bus can use OBDII buses.
Described Premium Features module 2, including byte analysis module 2-1, special value reply module 2-2, batch modification
Reply module 2-3, definite value increase and decrease and reply module 2-4, algorithm correction verification module 2-5, its workflow is as shown in Figure 2；
Byte analysis module 2-1, replys the data in data to the ECU that main control module 1 is transmitted and is analyzed by byte, and
Judge valid data position and data algorithm types, applicable modification mode is selected according to valid data position and data algorithm types
Special value is transferred data to reply module 2-2 or batch modification reply module 2-3 or definite value increase and decrease reply module 2-4 to change
Become ECU and reply valid data in data；And the changing rule of the corresponding diagnostic result of genuine diagnostic device 5 is analyzed, and counted
According to algorithm；
Special value replys module 2-2, and special value is inputted one by one to each byte in valid data position, and by number
According to being sent to serial communication modular 3, special value include 00,7F, 80, FF, 01,；；
Batch modification replys module 2-3, and multiple bytes in valid data position are inputted with specific identical numerical value simultaneously, and
Transfer data to serial communication modular 3；
Module 2-4 is replied in definite value increase and decrease, and the byte in valid data position is rised in value according to set value or depreciation is changed
Numerical value, value added on products and depreciation amount are：+ 01 ,+10, -01, -10, and transfer data to serial communication modular 3；
Algorithm correction verification module 2-5, the byte analysis module 2-1 algorithms determined are built on diagnostic device 6 leaved for development,
The diagnostic result of diagnostic result and genuine diagnostic device 5 that diagnostic device 6 leaved for development is fed back is contrasted, checking data
Peak, minimum and median, error are no more than 0.5%, show that the data algorithm that byte analysis module is determined is correct.
The determination method of described data algorithm is, n groups ECU is replied into valid data and genuine diagnostic device in data
Diagnostic result input algorithm model y=G (a, b, c ...；X), and model parameter value is obtained, x is that ECU replys significant figure in data
According to y is the diagnostic result of genuine diagnostic device, and n is the number of parameter a, b, c ... in algorithm model.
Described data algorithm type includes direct calculation, switching value mode, lookup table mode, ASCII character character side
Formula, hexadecimal, decimal system mode, binary mode, particular form and time mode.
Described main control module includes profile module 1-1, initiation parameter module 1-2 and data correction verification module 1-3；
Profile module 1-1, loads ECU data configuration file, transfers data to initiation parameter module 1-2；
Initiation parameter module 1-2, sets the serial port and baud rate and OBDII agreements ginseng of serial ports RS232 messaging parameters
Number, and transfer data to serial communication modular 3；
Data check module 1-3, the data to serial communication modular 3 are verified, and are examined and communicated by interior method of calibration
Whether data message is changed by outer verification to data in communications except all bytes of check bit in itself are according to choosing
Determine mode to be verified, whether changed in communications for inspection data, if interior verification and outer inspection all if
Transfer data to Premium Features module.Two kinds of verification modes of simultaneous selection can improve verification redundancy, it is ensured that data are in communication
In do not have interior verification in data check module 1-3 described in error code and outer method of calibration including the use of former data, a byte and,
One byte is negated, a byte goes benefit, a byte XOR, a byte CRC check, a byte remove second from the bottom, BENZ_5BPS, string
Mouthful direct communication, the special, Gaz_0d of card spy, two bytes verify and.
Described configuration file is designed using XML language, each configuration file one vehicle ECU of correspondence, stores the ECU
Communication protocol initiation parameter, diagnostic equipment and institute's functional communication data.
Described configuration file is designed using hierarchical structure, and one-level label is used<AUTO>, two grades of labels uses<INIT_
IO>With<COMM>, the use of three-level label<RECE>、<SEND>With<CMD>；Described<INIT_IO>The content of text bag of label
Include equipment initialization information；<COMM>The content of text of label includes the communication data of all orders；Described label<CMD>It is
Protocol initializing parameter command；Described<RECE>Label is to send to order for diagnostic device；<SEND>Label is that ECU is returned to
Diagnostic device order,<RECE>With<SEND>There are attribute HIDE, SD/RD in label.This level label in XML language is set
Meter is corresponding with the hierarchical structure of systemic-function in diagnostic device, can simplify library file and program code, improves program operation effect
Rate.
As shown in figure 3, a kind of analogy method of automobile ECU, comprises the following steps：
Step S1. main control modules load the configuration file for being modeled ECU, set initiation parameter and data check；
Step S2. Premium Features module is obtained from main control module replys data, and the online ECU that changes in real time replys data,
Transfer data to serial communication modular；
Step S3. serial communication modulars send ECU reply Data Datas to slave computer module；
Step S4. slave computers module sends ECU replies data to genuine diagnostic device, and genuine diagnostic device is diagnosed
Processing, and diagnostic result is obtained, diagnostic result is fed back into Premium Features module；Diagnostic process is diagnostic device according to receiving
The DTCs replied of simulation ECU, data flow, the data of motion test and specific function show corresponding diagnostic result, and hold
The corresponding data set of row；
Step S5. Premium Features module analysis diagnostic results, obtain data algorithm；
The data algorithm of determination is built into diagnostic device leaved for development by step S6., according to diagnostic device leaved for development
The diagnostic result of diagnostic result and genuine diagnostic device compare, verify peak, minimum and the median of data, such as error
No more than 0.5%, then the data algorithm that byte analysis module is determined is correct；If error is more than 0.5%, step b is performed.
In described step S2, the method that line changes ECU reply data in real time is that Premium Features module is first to main control module
The data that the ECU of transmission is replied in data are analyzed by byte, and judge valid data position and data algorithm types, and selection is suitable
Mode is replied with special value or batch modification replys mode or definite value increase and decrease reply mode replys data to change ECU.
The present invention can use the simulation system based on event driven VC++ too developments automobile ECU under VS2012 platforms
System.
XML configuration file is edited using business software UltraEdit, XML is checked using business software Altova XMLSpy
The syntax gauge of configuration file file.
Embodiment 2
System and method to more fully understand the present invention, are given below a specific embodiment to making invention into one
The explanation of step.
Profile module, loading benz ECONIC vehicle ECU data configuration files, configuration file partial content is as follows：
Initiation parameter module, the serial port for setting serial ports RS232 messaging parameters is COM2 and baud rate is 115200Bd/
S and OBDII protocol parameters, OBDII protocol parameters are：
<INIT_IO>
<CMD>00 2c 13 01 00 28 a0 02 00 03 c0 04 77 ff c1 c1 05 15 19 24 02
04 00 19 06 03 07 02 00 19 80 19 08 25 09 00 0a 00 00 00 0b 00 0c 01 00</CMD>
</INIT_IO>
Analyzed by taking engine torque parameter as an example：
Data check module, interior verification is using a word and negates, and outer verification is using a word and such as 00 0c 33 87 of order
In the ff ff ff 41 71 of 98 f2 00 00 00 00,41 be communication data " the ff ff of 33 87 98 f2 00 00 00 00
The interior verification of the word sums of ff " one, 71 " words of 00 0c, 33 87 98 f2,00 00 00 00 ff ff ff 41 " one and negate
Outer verification.
Byte analysis module is analyzed, according to " 00 00 00 00 " corresponding sample data " 0 " in ECU commands in return, analysis
Valid data position is X04, X03, X02, and X01 and data algorithm types are numeric type, and the present embodiment uses the form directly calculated,
Its algorithm is numeric type algorithm：Y=G (a, b, c, d, e；X04,X03,X02,X01).
Select definite value increase and decrease to reply module, the byte in valid data position is carried out according to set value to increase operation such as+01, obtained
To five groups of data 00 00 00 00；00 00 00 01；00 00 01 00；00 01 00 00；01 00 00 00.
5 groups of ECU are replied valid data 00 00 00 00 in data by byte analysis module；00 00 00 01；00 00
01 00；00 01 00 00；The 01 00 00 00 and diagnostic result 0.0,0.1,25.6,6553.5 of benz genuine diagnostic device,
The algorithm model y=([X04] * a+ [X03] * b+ [X02] * c+ [X01] * d) * 0.1 of 1677721.6 input engine torque parameters
+ e, and obtain model parameter value y=([X04] * 16777216+ [X03] * 65536+ [X02] * 256+ [X01]) * 0.1, X01,
X02, X03, X04 are that ECU replys valid data in data, and y is the diagnostic result data of benz genuine diagnostic device.
Algorithm correction verification module, the algorithm that byte analysis module is determined is built on diagnostic device leaved for development, will be waited out
The diagnostic result of the diagnostic result and genuine diagnostic device of the diagnostic device feedback of hair is contrasted, and verifies the peak of data such as
FF FF FF FF, minimum 00 00 00 00 and median 80 80 80 80 80, its error are 0.1%, 0.0% He
0.1%, show that the data algorithm that byte analysis module is determined is correct.
Claims (10)
1. a kind of simulation system of automobile ECU, it is characterised in that including：Main control module, Premium Features module, serial communication mould
Block and slave computer module；
Main control module, loading configuration file and setting initiation parameter, verification data, and transfer data to Premium Features mould
Block；
Premium Features module, is connected with serial communication modular, and online real time modifying ECU replys data, and transfers data to string
Port communications module；Algorithm is determined according to the diagnostic result that genuine diagnostic device feeds back；
Serial communication modular, is connected with slave computer module by Serial Port Line, enters row data communication；
Slave computer module, is connected with genuine diagnostic device by bus, enters row data communication.
2. a kind of simulation system of automobile ECU according to claim 1, it is characterised in that described Premium Features module,
Module, batch modification, which are replied, including byte analysis module, special value replys module, definite value increase and decrease reply module, algorithm verification
Module；
Byte analysis module, to main control module transmit ECU reply data analyzed by byte, and judge valid data position with
Data algorithm type, it is specific to select applicable modification mode to transfer data to according to valid data position and data algorithm types
Numerical value replys module or batch modification replys module or definite value increase and decrease replys module and replys valid data in data to change ECU；
And the changing rule of the diagnostic result of genuine diagnostic device feedback is analyzed, and obtain data algorithm；
Special value replys module, inputs special value one by one to each byte in valid data position, and data are transmitted
To serial communication modular；
Batch modification replys module, and multiple bytes in valid data position are inputted with specific identical numerical value simultaneously, and by data
It is sent to serial communication modular；
Module is replied in definite value increase and decrease, carries out increase and decrease operation according to set value to the byte in valid data position, and data are transmitted
To serial communication modular；
Algorithm correction verification module, the algorithm that byte analysis module is determined is built on diagnostic device leaved for development, will be leaved for development
The diagnostic result of diagnostic result and genuine diagnostic device of diagnostic device feedback is contrasted, the peak of checking data, minimum
Value and median, such as error are no more than 0.5%, then the data algorithm that byte analysis module is determined is correct.
3. the simulation system of a kind of automobile ECU according to claim 2, it is characterised in that described data algorithm is really
The method of determining is that the n groups ECU diagnostic results for replying valid data and genuine diagnostic device in data are inputted into algorithm model y=G
(a,b,c…；X), and model parameter value is obtained, x is that ECU replys valid data in data, and y is the diagnosis knot of genuine diagnostic device
Fruit data, m is the number of parameter a, b, c ... in algorithm model, and n is more than or equal to m.
4. a kind of simulation system of automobile ECU according to claim 2, it is characterised in that described data algorithm type
Including direct calculation, switching value mode, lookup table mode, ASCII character character mode, hexadecimal, decimal system mode,
Binary mode, particular form and time mode.
5. the simulation system of a kind of automobile ECU according to claim 2, it is characterised in that described special value is replied
The special value of module include 00,7F, 80, FF, 01,；
The increase and decrease operation that described definite value increase and decrease replys in module is by increment or depreciation to change numerical value to byte, value added on products and
Depreciation amount is：+01、+10、-01、-10.
6. the simulation system of a kind of automobile ECU according to claim 2, it is characterised in that described main control module includes
Profile module, data check module and initiation parameter module；
Profile module, loads ECU data configuration file, transfers data to initiation parameter module；
Initiation parameter module, sets the serial port and baud rate and OBDII protocol parameters of serial ports RS232 messaging parameters, and will
Data are sent to serial communication modular；
Data check module, the data to serial communication modular are verified, and communication data information is examined by interior method of calibration
Whether changed in communications, by outer verification to data except all bytes of check bit in itself are entered according to selected mode
Whether row verification, change for inspection data in communications, all passes data if if interior inspection and outer verification
Deliver to Premium Features module.
7. a kind of simulation system of automobile ECU according to claim 6, it is characterised in that described data check module
In interior verification and outer method of calibration including the use of former data, a byte and, a byte negate, a byte go mend, a byte it is different
Or, a byte CRC check, a byte is except second from the bottom, BENZ_5BPS, serial ports direct communication, card spy special, Gaz_0d, two words
Section verification and.
8. the simulation system of a kind of automobile ECU according to claim 1, it is characterised in that described configuration file is used
Hierarchical structure is designed, and one-level label is used<AUTO>, two grades of labels uses<INIT_IO>With<COMM>, the use of three-level label<
RECE>、<SEND>With<CMD>；Described<INIT_IO>The content of text of label includes equipment initialization information；<COMM>Mark
The content of text of label includes the communication data of all orders；Described label<CMD>It is protocol initializing parameter command；Described
<RECE>Label is to send to order for diagnostic device；<SEND>Label is that ECU returns to diagnostic device order,<RECE>With<
SEND>There are attribute HIDE, SD/RD in label.
9. a kind of analogy method of automobile ECU, it is characterised in that comprise the following steps：
A. main control module loading is modeled ECU configuration file, sets initiation parameter, and verification data；
B. Premium Features module is obtained from main control module replys data, and the online ECU that changes in real time replys data, and data are transmitted
To serial communication modular；
C. serial communication modular sends ECU reply Data Datas to slave computer module；
D. slave computer module sends ECU replies data to genuine diagnostic device, and genuine diagnostic device carries out diagnostic process, and obtains
To diagnostic result, diagnostic result is fed back into Premium Features module；
E. Premium Features module analysis diagnostic result, obtains data algorithm；
F. the data algorithm of determination is built into diagnostic device leaved for development, according to the diagnostic result of diagnostic device leaved for development
Compared with the diagnostic result of genuine diagnostic device, verify peak, minimum and the median of data, such as error is no more than
0.5%, then the data algorithm that byte analysis module is determined is correct；If error is more than 0.5%, step b is performed.
10. a kind of analogy method of automobile ECU according to claim 9, it is characterised in that in described step b, line is real
When change ECU reply data method be, Premium Features module first to main control module transmit ECU reply data in data press
Byte is analyzed, and judges valid data position and data algorithm types, and selection is applicable special value reply mode or batch is repaiied
Change back compound formula or definite value increase and decrease reply mode replys data to change ECU.
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