CN104216390A - Device and method for calibrating electronic control units of automobiles on basis of CCP [CAN (controller area network) calibration protocol] - Google Patents
Device and method for calibrating electronic control units of automobiles on basis of CCP [CAN (controller area network) calibration protocol] Download PDFInfo
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Abstract
The invention provides a method for calibrating electronic control units of automobiles on the basis of a CCP [CAN (controller area network) calibration protocol]. The method includes reading current S19 files in first memories and explicitly writing mapping addresses and initial values of various implicitly stored calibration parameters into a second S19 files; parsing the second S19 files, acquiring the mapping addresses and the initial values of the various calibration parameters, calibrating the to-be-calibrated electronic control units of the automobiles in an online manner after calibration commands are received, and acquiring calibration parameter values which are calibrated in the online manner; replacing the initial values of the various calibration parameters in the current S19 files in the first memories by the various calibration parameter values which are calibrated in the online manner. The method has the advantages that the complexity of a system for calibrating the ECU (electronic control units) of the automobiles can be reduced, and the production cost and the labor cost can be lowered.
Description
Technical field
The present invention relates to technical field of automobile electronic control, particularly relate to a kind of caliberating device and method of the vehicle electronic control unit based on CCP agreement (CAN Calibration Protocol, CAN demarcates agreement).
Background technology
In Automobile Design and manufacture process, usually need the step of carrying out demarcating.Said demarcation herein refers to and to require according to the properties of vehicle complete vehicle: as dynamic property, economy and discharge etc., control above with optimum for target economically to reach, to the process that operation and the parameter of vehicle electronic control unit (Electronic Control Unit, ECU) adjust, optimize.It is demarcate agreement based on CAN that CAN demarcates agreement (CCP), because which providing standardized interface, improves versatility and the practicality of calibration system.
Present stage is divided into on-line proving and off-line calibration two kinds based on the demarcation of CCP, their difference is whether be connected with the ECU run in the process of demarcating, and on-line proving is because carrying out accurate adjustment according to the real-time running state of system, its calibration result is more accurate and be widely used.
In the art, be generally that calibrating parameters is respectively stored portion in flash memory FLASH and random access memory ram, form an address mapping relation at both.When calibrating procedure normally runs, it reads calibrating parameters from FLASH, and when carrying out on-line proving, calibrating procedure reads scalar quantity from the corresponding position the RAM of correspondence.Because the data in RAM are convenient to real time modifying, therefore the calibrating parameters in RAM can use caliberating device (e.g., matching and calibration instrument) to be modified by the communication of CAN, thus realizes calibration process.Concrete implementation method has the following two kinds:
One, by software simulating address maps: when writing calibrating procedure and writing, adopt pointer access calibrating parameters, everyly relate to that scalar quantity calls, by extra code process, setting pointer points to the calibrating parameters in FLASH and RAM respectively, reaches the object realizing timing signal and freely can switch between FLASH and RAM calibrating parameters.But inventor finds when implementing of the present invention, and the shortcoming of existing this method is obvious, need just to determine calibrating parameters when programming, and need increase corresponding code process, workload is large especially.Particularly, if code is by auto-building model (method based on auto-building model code is very universal), then cannot by having adapted to the demand of CCP since amendment code.
Two, by using the single-chip microcomputer of supporting automatically to carry out address maps: in this caliberating device, after calibrating parameters is copied to RAM from FLASH, and start timing signal, single-chip microcomputer automatically will be got address, location and switch to RAM by FLASH, so just just can realize calibration process without the need to writing extra code process.This method advantage is the less and code be applicable to based on auto-building model of programming amount, but the present inventor finds, the same Shortcomings part of this method: it depends on the support of single-chip microcomputer, but present stage only have minority single-chip microcomputer can realize this expanded function; In addition, this implementation cost is high.
Summary of the invention
Technical matters to be solved by this invention is, provides a kind of caliberating device and method of the vehicle electronic control unit based on CCP agreement, and it is easy to realize, and cost is low.
In order to solve the problems of the technologies described above, the one side of the embodiment of the present invention provides a kind of scaling method of the vehicle electronic control unit based on CCP agreement, comprises the steps:
Read the current S19 file in first memory, obtain each calibrating parameters mapping address and the initial value of recessive storage in described current S19 file, described each calibrating parameters mapping address and initial value are write in one the 2nd S19 file in dominant mode, wherein said mapping address is the memory address in a second memory;
Resolve described 2nd S19 file, obtain described each calibrating parameters institute's mapping address and initial value, by the initial value of described each calibrating parameters stored in memory address corresponding in described second memory, after receiving demarcation order, by operating to carry out on-line proving process to vehicle electronic control unit to be calibrated to described second memory, obtain the calibrating parameters value through on-line proving process;
The initial value of each calibrating parameters in the current S19 file in described first memory is replaced with described each calibrating parameters value through on-line proving process.
Wherein, described first memory is flash memory FLASH, and described second memory is random access memory ram.
Wherein, comprise further:
Mapping address in advance corresponding to each calibrating parameters distribution and initial value.
Wherein, current S19 file in described reading first memory, obtain mapping address and initial value that in described current S19 file, the recessive each calibrating parameters stored is corresponding, the step that mapping address corresponding for described each calibrating parameters and initial value write one the 2nd S19 file in dominant mode be specially:
From " copy_table " field of described current S19 file, obtain mapping address and the initial value of described each calibrating parameters mapping, and write the end of described 2nd S19 file in dominant mode.
Wherein, the step that the described initial value by each calibrating parameters in the current S19 file in described first memory replaces with described each calibrating parameters value through on-line proving process is specially:
By compile script, described each calibrating parameters value write-back through on-line proving process is entered in " copy_table " field of described current S19 file, to replace the initial value of corresponding each calibrating parameters.
Correspondingly, another aspect of the present invention, provides a kind of caliberating device of the vehicle electronic control unit based on CCP agreement, comprising:
S19 file compilation unit, for reading the current S19 file in first memory, obtain described current | the mapping address that in S19 file, the recessive each calibrating parameters stored is corresponding and initial value, mapping address corresponding for described each calibrating parameters and initial value are write in one the 2nd S19 file in dominant mode, wherein said mapping address is the memory address in a second memory;
Matching and calibration unit, for resolving described 2nd S19 file, obtain the mapping address corresponding to described each calibrating parameters and initial value, by the initial value of described each calibrating parameters stored in memory address corresponding in described second memory, after receiving demarcation order, by operating to carry out on-line proving process to vehicle electronic control unit to be calibrated to described second memory, obtain the calibrating parameters value through on-line proving process;
S19 file update unit, replaces with described each calibrating parameters value through on-line proving process by the initial value of each calibrating parameters in the current S19 file in described first memory.
Wherein, described first memory is flash memory FLASH, and described second memory is random access memory ram.
Wherein, comprise further:
Setting unit, for the mapping address in advance corresponding to each calibrating parameters distribution, and initial value.
Wherein, described S19 file compilation unit obtains mapping address and the initial value of described each calibrating parameters from " copy_table " field of described current S19 file, and writes the end of described 2nd S19 file in dominant mode.
Wherein, described matching and calibration unit comprises further:
Resolving subelement, for resolving described 2nd S19 file, obtaining mapping address corresponding to described each calibrating parameters and initial value from the end of described 2nd S19 file;
Read-write subelement, for the initial value of described each calibrating parameters that obtained by described parsing subelement stored in memory address corresponding in described second memory;
Demarcating subelement, after receiving demarcation order, by operating to carry out on-line proving process to vehicle electronic control unit to be calibrated to described second memory, obtaining the calibrating parameters value through on-line proving process.
Wherein, comprise further:
Communication unit, it is connected by CAN with vehicle electronic control unit, for being communicated by CCP agreement with between vehicle electronic control unit.
Implement the present invention, there is following beneficial effect:
In the embodiment of the present invention, the memory address of calibrating parameters and initial value are stored in flash memory with the form of S19 file (current S19 file), carrying out timing signal, can by the initial value of the calibrating parameters in real time modifying random access memory, and the calibrating parameters value that can upgrade according to result in current S19 file, eliminate the step of loaded down with trivial details address maps in prior art, by means of only writing make file and script, namely can complete calibration process and realize preserving, and there will not be the situation that data are lost when power down;
The present invention only needs little programming amount in programming, and does not rely on single-chip microcomputer, greatly reduces exploitation and demarcation expense, thus reduces cost.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the caliberating device of a kind of vehicle electronic control unit based on CCP agreement provided by the invention;
Fig. 2 is the main flow schematic diagram of the scaling method of a kind of vehicle electronic control unit based on CCP agreement provided by the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, the caliberating device of a kind of vehicle electronic control unit based on CCP agreement in the present invention one enforcement is shown.As can be seen from the figure, this caliberating device 1 comprises:
First memory 12, it is nonvolatile memory, be flash memory (FLASH) in the present embodiment, it stores a S19 file, under be called current S19 file, recessive mapping address and the initial value storing each calibrating parameters in S19 file in this prior, wherein, mapping address is the memory address in a second memory, this second memory 15 is random access memory ram, in one embodiment, the mapping address of each calibrating parameters and initial value are stored in current S19 file " copy_table " field, due in the prior art, " copy_table " field default storage of S19 file be the memory address of FLASH, therefore the existing matching and calibration instrument mapping address that cannot accurately identify in current S19 file is the memory address of random access memory (RAM), therefore need to process accordingly current S19 file,
S19 file compilation unit 13, for reading the current S19 file in first memory 12, obtain mapping address and initial value that in current S19 file, the recessive each calibrating parameters stored is corresponding, the mapping address of each calibrating parameters and initial value are write in one the 2nd S19 file in dominant mode, particularly, this S19 file compilation unit obtains mapping address and the initial value of each calibrating parameters from " copy_table " field of current S19 file, and writes to the end of the 2nd S19 file;
Matching and calibration unit 14, for resolving the 2nd S19 file that S19 file compilation unit 13 generates, obtain mapping and the initial value of each calibrating parameters, by the initial value of each calibrating parameters stored in memory address (i.e. mapping address) corresponding in second memory 15, and after receiving demarcation order, by operating to carry out on-line proving process to vehicle electronic control unit 2 to be calibrated to second memory 15, obtain the calibrating parameters value through on-line proving process, particularly, matching and calibration unit 14 is by operating (as read, amendment etc.) initial value of each calibrating parameters in random access memory ram, demarcating each corresponding parameter of the demarcation vehicle electronic control unit to be calibrated 2 be connected with this matching and calibration unit 14 (read or amendment etc.),
S19 file update unit 18, the initial value of each calibrating parameters in the current S19 file in first memory 12 is replaced with each calibrating parameters value through on-line proving process that matching and calibration unit 14 obtains, particularly, each calibrating parameters value through on-line proving process is replaced the initial value of corresponding each calibrating parameters in current S19 file " copy_table " field, this current S19 file is upgraded;
Communication unit 16, it is connected by CAN with vehicle electronic control unit 2 to be calibrated, for and vehicle electronic control unit 2 to be calibrated between communicated by CCP agreement.
This caliberating device 1 comprises further:
Setting unit 10, for being each calibrating parameters allocation map address and initial value in advance.
Particularly, this matching and calibration unit 14 comprises further:
Resolving subelement 140, for resolving the 2nd S19 file that S19 file compilation unit 13 generates, obtaining mapping address corresponding to each calibrating parameters and initial value from the end of the 2nd S19 file;
Read-write subelement 142, for resolving the initial value of each calibrating parameters that subelement 140 obtains stored in memory address (i.e. corresponding mapping address) corresponding in second memory 15;
Demarcate subelement 144, after receiving demarcation order, by operating to carry out on-line proving process (such as to vehicle electronic control unit 2 to be calibrated to second memory 15, read second memory 15 initial value that is a certain or some calibrating parameters to demarcate vehicle electronic control unit 2 to be calibrated, or second memory 15 initial value that is a certain or some calibrating parameters is demarcated the corresponding calibrating parameters of vehicle electronic control unit 2 to be calibrated as required, etc.), obtain the calibrating parameters value through on-line proving process.
When caliberating device 1 next electrifying startup, namely can current S19 file in first memory 12 " copy_table " field in read the calibrating parameters value of each parameter after last on-line proving process, using the calibrating parameters initial value demarcated as this, thus start this on-line proving process.
Be understandable that, S19 file mentioned above is the program file that the suffix generated by Freescale CodeWarrior compiler is called " .S19 ", it can store data and data address, more details can with reference in prior art to the introduction of S19 file.
As shown in Figure 2, the main flow schematic diagram of the scaling method of a kind of vehicle electronic control unit based on CCP agreement in one embodiment of the present of invention is shown.As can be seen from the figure, scaling method of the present invention mainly comprises following step:
Step S20, is undertaken being connected by CAN by caliberating device and vehicle electronic control unit to be calibrated, to this caliberating device electrifying startup; Now, read the current S19 file stored in first memory FLASH, mapping address corresponding to the recessive each calibrating parameters stored and initial value is obtained from " copy_table " field of this current S19 file, mapping address corresponding for each calibrating parameters and initial value are write the end of one the 2nd S19 file in dominant mode, wherein, mapping address is the memory address in a second memory, and this second memory 15 is random access memory ram; 2nd S19 file is a S19 file temporarily generated, and it can be dropped after demarcation completes; Particularly, the process of described generation the 2nd S19 file can realize automatically by writing a make file.
Step S22, resolve the 2nd S19 file, obtain the mapping address corresponding to each calibrating parameters and the initial value of the 2nd S19 file end, by the initial value of each calibrating parameters stored in memory address (i.e. mapping address) corresponding in described second memory, after receiving demarcation order, by operating to carry out on-line proving process to vehicle electronic control unit to be calibrated to second memory, obtain the calibrating parameters value through on-line proving process, saidly herein the initial value comprised a certain or some calibrating parameters in second memory is operated to second memory modify, to revise corresponding calibrating parameters value in vehicle electronic control unit to be calibrated.
Step S24, by each calibrating parameters value through on-line proving process that previous step obtains, replace the initial value of each calibrating parameters in first memory, namely the current S19 file in first memory is upgraded, particularly, by compile script, each calibrating parameters value write-back through on-line proving process is entered in " copy_table " field of described current S19 file, to replace the initial value of corresponding each calibrating parameters.
Be understandable that, when the programming of software, need in advance for each calibrating parameters distribute corresponding to mapping address and initial value, and without the need to carrying out this step in on-line proving process below.
What deserves to be explained is, existing matching and calibration instrument is only to identify the data of dominant storage in S19 file, and the mapping address that in first memory (FLASH), in current S19 file, each calibrating parameters is corresponding and initial value are recessive storages, therefore need these data recessiveness stores to be added in the 2nd S19 file in the mode of dominant storage, calibration tool just can identify the data of dominant storage in the 2nd S19 file.This operation can make it automatically process by compile script, as, field in current S19 file is region that acquiescence preserves FLASH address in " copy_table ", is multiplexed with and preserves mapping address (address ram) corresponding to each calibrating parameters and initial value etc.; By the parsing of " copy_table " to current S19 file, obtain each calibrating parameters, and the end of the 2nd S19 file is added in the mode of dominant storage, 2nd S19 file of such formation will be applicable to matching and calibration instrument, make matching and calibration instrument can obtain mapping address (address ram) corresponding to each calibrating parameters of these dominant storages and initial value by the 2nd S19 file, thus utilize these parameters and operation is carried out to RAM and realize calibration process.
In the present invention, directly do not adopt at mapping address corresponding to each calibrating parameters of the dominant storage of end of current S19 file and initial value, based on following consideration: because current S19 file is a kind of through the program compiler of checking, it also has other function (such as directly allowing ECU run) except being used for carrying out demarcation, if at mapping address corresponding to each calibrating parameters of the dominant storage of current S19 file end and initial value, the structure of current S19 file can be changed, first it need increase by 1 twice compilation process, the risk that program is made mistakes can be improved in addition.And the mapping address utilizing provisional each calibrating parameters of the dominant storage of the 2nd S19 file corresponding and initial value, and after demarcation, abandon the 2nd S19 file can reduce this risk.
Owing to being written back in current S19 file through each calibrating parameters value of on-line proving process, and current S19 file is stored in non-volatile flash memory (first memory), even if power down above-mentioned parameter value also can not be lost, when caliberating device electrifying startup next time, namely can read the calibrating parameters initial value of calibrating parameters value as this calibration process of each parameter after last on-line proving process in the field of " copy_table " in current S19 file in a first memory, thus start this on-line proving process.
Implement the present invention, there is following beneficial effect:
Embodiments of the invention disclose a kind of on vehicle electronic control unit, realize CCP on-line proving function method and device, and it can carry out on-line proving to the vehicle electronic control unit of volume production very simply, greatly reduces production cost and human cost;
In the embodiment of the present invention, the memory address of calibrating parameters and initial value are stored in flash memory with the form of S19 file (current S19 file), carrying out timing signal, can by the initial value of the calibrating parameters in real time modifying random access memory, and the calibrating parameters value that can upgrade according to result in current S19 file, eliminate the step of loaded down with trivial details address maps in prior art, by means of only writing make file and script, namely can complete calibration process and realize preserving, and there will not be the situation that data are lost when power down;
The present invention only needs little programming amount in programming, and does not rely on single-chip microcomputer, greatly reduces exploitation and demarcation expense, thus reduces cost.
Be understandable that, one of ordinary skill in the art will appreciate that all or part of flow process realized in above-described embodiment method, that the hardware that can carry out instruction relevant by computer program has come, described program can be stored in a computer read/write memory medium, this program, when performing, can comprise the flow process of the embodiment as above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
Above disclosedly be only a kind of preferred embodiment of the present invention, certainly can not limit the interest field of the present invention with this, therefore according to the equivalent variations that the claims in the present invention are done, still belong to the scope that the present invention is contained.
Claims (11)
1. based on a scaling method for the vehicle electronic control unit of CCP agreement, it is characterized in that, comprise the steps:
Read the current S19 file in first memory, obtain each calibrating parameters mapping address and the initial value of recessive storage in described current S19 file, described each calibrating parameters mapping address and initial value are write in one the 2nd S19 file in dominant mode, wherein said mapping address is the memory address in a second memory;
Resolve described 2nd S19 file, obtain described each calibrating parameters institute's mapping address and initial value, by the initial value of described each calibrating parameters stored in memory address corresponding in described second memory, after receiving demarcation order, by operating to carry out on-line proving process to vehicle electronic control unit to be calibrated to described second memory, obtain the calibrating parameters value through on-line proving process;
The initial value of each calibrating parameters in the current S19 file in described first memory is replaced with described each calibrating parameters value through on-line proving process.
2. the scaling method of a kind of vehicle electronic control unit based on CCP agreement as claimed in claim 1, it is characterized in that, described first memory is flash memory FLASH, and described second memory is random access memory ram.
3., as claim becomes the scaling method of a kind of vehicle electronic control unit based on CCP agreement as described in 1, it is characterized in that, comprise further:
Mapping address in advance corresponding to each calibrating parameters distribution and initial value.
4. the scaling method of a kind of vehicle electronic control unit based on CCP agreement as claimed in claim 1, it is characterized in that, current S19 file in described reading first memory, obtain mapping address and initial value that in described current S19 file, the recessive each calibrating parameters stored is corresponding, the step that mapping address corresponding for described each calibrating parameters and initial value write one the 2nd S19 file in dominant mode be specially:
From " copy_table " field of described current S19 file, obtain mapping address and the initial value of described each calibrating parameters mapping, and write the end of described 2nd S19 file in dominant mode.
5. the scaling method of a kind of vehicle electronic control unit based on CCP agreement as claimed in claim 4, it is characterized in that, the step that the described initial value by each calibrating parameters in the current S19 file in described first memory replaces with described each calibrating parameters value through on-line proving process is specially:
By compile script, described each calibrating parameters value write-back through on-line proving process is entered in " copy_table " field of described current S19 file, to replace the initial value of corresponding each calibrating parameters.
6. based on a caliberating device for the vehicle electronic control unit of CCP agreement, it is characterized in that, comprising:
S19 file compilation unit, for reading the current S19 file in first memory, obtain mapping address and initial value that in described current S19 file, the recessive each calibrating parameters stored is corresponding, mapping address corresponding for described each calibrating parameters and initial value are write in one the 2nd S19 file in dominant mode, wherein said mapping address is the memory address in a second memory;
Matching and calibration unit, for resolving described 2nd S19 file, obtain the mapping address corresponding to described each calibrating parameters and initial value, by the initial value of described each calibrating parameters stored in memory address corresponding in described second memory, after receiving demarcation order, by operating to carry out on-line proving process to vehicle electronic control unit to be calibrated to described second memory, obtain the calibrating parameters value through on-line proving process;
S19 file update unit, replaces with described each calibrating parameters value through on-line proving process by the initial value of each calibrating parameters in the current S19 file in described first memory.
7. the caliberating device of a kind of vehicle electronic control unit based on CCP agreement as claimed in claim 6, it is characterized in that, described first memory is flash memory FLASH, and described second memory is random access memory ram.
8. the caliberating device of a kind of vehicle electronic control unit based on CCP agreement as claimed in claim 7, is characterized in that, comprise further:
Setting unit, for the mapping address in advance corresponding to each calibrating parameters distribution, and initial value.
9. the caliberating device of a kind of vehicle electronic control unit based on CCP agreement as claimed in claim 8, it is characterized in that, described S19 file compilation unit obtains mapping address and the initial value of described each calibrating parameters from " copy_table " field of described current S19 file, and writes the end of described 2nd S19 file in dominant mode.
10. the caliberating device of a kind of vehicle electronic control unit based on CCP agreement as claimed in claim 9, it is characterized in that, described matching and calibration unit comprises further:
Resolving subelement, for resolving described 2nd S19 file, obtaining mapping address corresponding to described each calibrating parameters and initial value from the end of described 2nd S19 file;
Read-write subelement, for the initial value of described each calibrating parameters that obtained by described parsing subelement stored in memory address corresponding in described second memory;
Demarcating subelement, after receiving demarcation order, by operating to carry out on-line proving process to vehicle electronic control unit to be calibrated to described second memory, obtaining the calibrating parameters value through on-line proving process.
The caliberating device of 11. vehicle electronic control units based on CCP agreement as described in any one of claim 6-10, is characterized in that, comprise further:
Communication unit, it is connected by CAN with vehicle electronic control unit, for being communicated by CCP agreement with between vehicle electronic control unit.
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| CN109656607A (en) * | 2019-01-03 | 2019-04-19 | 广西玉柴机器股份有限公司 | A kind of full address scaling method that supporting super large nominal data amount and system |
| CN110632909A (en) * | 2019-09-29 | 2019-12-31 | 潍柴动力股份有限公司 | Method and equipment for detecting reasonability of back-checking MAP data |
| CN113050589A (en) * | 2021-03-05 | 2021-06-29 | 东软睿驰汽车技术（沈阳）有限公司 | Method, device and equipment for calibrating vehicle ECU (electronic control Unit) parameters |
| CN113050589B (en) * | 2021-03-05 | 2022-06-03 | 东软睿驰汽车技术（沈阳）有限公司 | Method, device and equipment for calibrating vehicle ECU (electronic control Unit) parameters |
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