CN109656607A - A kind of full address scaling method that supporting super large nominal data amount and system - Google Patents
A kind of full address scaling method that supporting super large nominal data amount and system Download PDFInfo
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- CN109656607A CN109656607A CN201910003501.8A CN201910003501A CN109656607A CN 109656607 A CN109656607 A CN 109656607A CN 201910003501 A CN201910003501 A CN 201910003501A CN 109656607 A CN109656607 A CN 109656607A
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- calibration
- calibration value
- ram
- initial value
- specified parameter
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/60—Software deployment
- G06F8/65—Updates
- G06F8/654—Updates using techniques specially adapted for alterable solid state memories, e.g. for EEPROM or flash memories
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2432—Methods of calibration
Abstract
The invention discloses a kind of full address scaling methods for supporting super large nominal data amount, including steps are as follows, S1, save the initial value of whole parameters in memory；S2, definition save the temporary memory space of the initial value pointer of specified parameter；S3, definition save the first ram space of the calibration value of specified parameter and save the second ram space of calibration value pointer；S4, corresponding initial value has just been read according to initial value pointer when powering on；When S5, proving operation, it is stored in the first ram space using the initial value of specified parameter as calibration value, and calibration value pointer is stored in the second ram space, calibration value is read according to calibration value pointer or new calibration value is written；Final calibration value is read according to calibration value pointer when S6, calibration are completed；S7, step S5~step S6 is repeated, completes the calibration of other parameters.The invention also discloses a kind of full address calibration systems for supporting super large nominal data amount.Super large data volume on-line proving can be realized without extending out larger RAM resource in the present invention.
Description
Technical field
The present invention relates to Engine ECU calibration technique fields, more specifically, it relates to a kind of support super large nominal data
The full address scaling method and system of amount.
Background technique
In current Engine ECU High Pressure Common Rail Fuel Injection System, as discharge standard is promoted, the complexity of software is controlled
Become very high.In exploitation test process, needs to do proving operation to all multi-parameters of system, find the parameter of system optimal.
Therefore, rigors are proposed to the convenience of proving operation, reliability etc..Due to the nominal data of High Pressure Common Rail Fuel Injection System
Huge (being greater than 1Mbytes) is measured, it at present only very few foreign vendor (such as Bosch), can be in the volume production for not extending out RAM resource
On ECU, the on-line proving of super large data volume is realized, and the method realized belongs to technology secret, without any disclosed related money
Material document can be used for reference.
And existing technical solution on domestic market, in order to realize super large data volume on-line proving, it is necessary to extend out larger RAM
Resource, develops dedicated calibration ECU, and calibration engineer can only use special calibrating ECU to carry out staking-out work.Tradition calibration framework
As shown in Figure 1, traditional CCP/XCP framework, working page WP and RP page address space is one-to-one mapping relations, works as calibration
When variable quantity is very big, the RAM resource of single-chip microcontroller is unable to satisfy requirement, it is necessary to extend out.It is very high due to extending out RAM cost, and measure
Production ECU is very sensitive to cost, and therefore, volume production ECU, which can generally cancel, extends out RAM, directly solidifies the number demarcated in a program
According to, it may be assumed that volume production ECU does not have on-line proving function.This scheme using special calibrating ECU on-line proving is to electric-control system
Development phase debugging, production management, product up-gradation maintenance etc. bring inconvenience.
Summary of the invention
The technical problem to be solved by the present invention is to be directed to the prior art above-mentioned deficiency, the purpose of the present invention one there is provided
A kind of full address that the support super large nominal data amount of super large data volume on-line proving can be realized without extending out larger RAM resource
Scaling method.
The purpose of the present invention two can be realized super large data volume without extending out larger RAM resource there is provided one kind and mark online
The full address calibration system of fixed support super large nominal data amount.
To achieve the goals above one, the present invention provides a kind of full address scaling method for supporting super large nominal data amount,
Including steps are as follows,
S1, the initial value of whole parameters is stored in the memory of ECU and obtains the initial value pointer of whole parameters；
The temporary memory space of the initial value pointer of S2, in the memory definition for temporarily saving specified parameter；
S3, the first ram space for defining calibration value for saving specified parameter respectively in the RAM of ECU and for protecting
Deposit the second ram space of the calibration value pointer of the calibration value；
S4, it has just powered on when not doing proving operation, the initial value pointer of specified parameter has been updated to the temporary memory space,
And corresponding initial value is read according to the initial value pointer in the temporary memory space；
When S5, progress proving operation, it is stored in first ram space using the initial value of specified parameter as calibration value,
And the calibration value pointer of the calibration value is stored in second ram space, referred to according to the calibration value in second ram space
Needle reads corresponding calibration value or new calibration value is written；
When the calibration of S6, specified parameter are completed, specified parameter is read according to the calibration value pointer in second ram space
Final calibration value；
S7, step S5~step S6 is repeated, completes the calibration of other parameters.
As a further improvement, the memory is flash memory FLASH.
Further, the temporary memory space is 50~100Kbytes.
Further, first ram space, the second ram space are 50~100Kbytes.
To achieve the goals above two, the present invention provides a kind of full address calibration system for supporting super large nominal data amount,
Including sequentially connected host computer, CCP/XCP communication module, ECU, the ECU is respectively equipped with memory, RAM, application layer program
Module, the host computer send a command to the ECU by the CCP/XCP communication module to switch the calibration shape of the ECU
State, the memory are used to save the initial value of whole parameters, and the RAM is used to save the calibration value of specified parameter, described to answer
It is used to read the initial value of specified parameter with layer program module, calibration carried out to specified parameter and described in calibration value is written
In RAM, the host computer reads the final calibration value of specified parameter by the CCP/XCP communication module.
Beneficial effect
Compared with prior art, the present invention having the advantage that are as follows:
1, it is not required to extend out RAM chip, super large data volume proving operation can be realized, guarantee that volume production ECU has on-line proving
While function, the cost of volume production ECU is effectively reduced；
2, the working efficiency of calibration engineer is improved, development phase debugging, production to electric-control system are greatly facilitated
Management, product up-gradation maintenance；
3, it can be realized under the CCP/XCP agreement of standard, Protocol communication layer it goes without doing any change, implementation cost is low.
Detailed description of the invention
Fig. 1 is the block diagram of traditional technology；
Fig. 2 is block diagram of the invention.
Specific embodiment
The present invention is described further for specific embodiment in reference to the accompanying drawing.
Refering to fig. 1-2, a kind of full address scaling method for supporting super large nominal data amount, including steps are as follows,
S1, the initial value of whole parameters is stored in the memory of ECU and obtains the initial value pointer of whole parameters；
The temporary memory space of the initial value pointer of S2, in memory definition for temporarily saving specified parameter；
S3, the first ram space for defining calibration value for saving specified parameter respectively in the RAM of ECU and for protecting
Deposit the second ram space of the calibration value pointer of the calibration value；
S4, it has just powered on when not doing proving operation, the initial value pointer of specified parameter has been updated to temporary memory space, and root
Corresponding initial value is read according to the initial value pointer in temporary memory space；
When S5, progress proving operation, it is stored in the first ram space using the initial value of specified parameter as calibration value, and will
The calibration value pointer of calibration value is stored in the second ram space, reads corresponding mark according to the calibration value pointer in the second ram space
New calibration value is written in definite value；
When the calibration of S6, specified parameter are completed, specified parameter is read most according to the calibration value pointer in the second ram space
Whole calibration value；
S7, step S5~step S6 is repeated, completes the calibration of other parameters.
Memory be flash memory FLASH, memory space is big, temporary memory space be 50~100Kbytes, first
Ram space, the second ram space are 50~100Kbytes, and the size in specific space can be according to the size of data of specified parameter
It determines, to save the ram space on single-chip microcontroller.
A kind of full address calibration system for supporting super large nominal data amount, including sequentially connected host computer, CCP/XCP are logical
Module, ECU are interrogated, ECU is respectively equipped with memory, RAM, application layer program module, and host computer is sent by CCP/XCP communication module
ECU is ordered to switch the calibration state of ECU, memory is used to save the initial value of whole parameters, and RAM is for saving specified ginseng
Several calibration values, application layer program module are used to read the initial value of specified parameter, calibration are carried out to specified parameter and will be marked
Definite value is written in RAM, and host computer reads the final calibration value of specified parameter by CCP/XCP communication module.
The present invention is not required to extend out RAM chip, and super large data volume proving operation can be realized, and guarantees that volume production ECU has online
While calibrating function, the cost of volume production ECU is effectively reduced；The working efficiency of calibration engineer is improved, is greatly facilitated pair
Development phase debugging, production management, the product up-gradation maintenance of electric-control system；It can be realized, assist under the CCP/XCP agreement of standard
Communication layers it goes without doing any change is discussed, implementation cost is low.
What has been described above is only a preferred embodiment of the present invention, it should be pointed out that for those skilled in the art,
Without departing from the structure of the invention, several modifications and improvements can also be made, these all will not influence implementation of the present invention
Effect and patent practicability.
Claims (5)
1. a kind of full address scaling method for supporting super large nominal data amount, it is characterised in that: including steps are as follows,
S1, the initial value of whole parameters is stored in the memory of ECU and obtains the initial value pointer of whole parameters；
The temporary memory space of the initial value pointer of S2, in the memory definition for temporarily saving specified parameter；
S3, the first ram space for defining calibration value for saving specified parameter respectively in the RAM of ECU and for saving this
Second ram space of the calibration value pointer of calibration value；
S4, it has just powered on when not doing proving operation, the initial value pointer of specified parameter has been updated to the temporary memory space, and root
Corresponding initial value is read according to the initial value pointer in the temporary memory space；
When S5, progress proving operation, it is stored in first ram space using the initial value of specified parameter as calibration value, and will
The calibration value pointer of the calibration value is stored in second ram space, is read according to the calibration value pointer in second ram space
It takes corresponding calibration value or new calibration value is written；
When the calibration of S6, specified parameter are completed, specified parameter is read most according to the calibration value pointer in second ram space
Whole calibration value；
S7, step S5~step S6 is repeated, completes the calibration of other parameters.
2. a kind of full address scaling method for supporting super large nominal data amount according to claim 1, it is characterised in that: institute
The memory stated is flash memory FLASH.
3. a kind of full address scaling method for supporting super large nominal data amount according to claim 1, it is characterised in that: institute
The temporary memory space stated is 50~100Kbytes.
4. a kind of full address scaling method for supporting super large nominal data amount according to claim 1 to 3,
Be characterized in that: first ram space, the second ram space are 50~100Kbytes.
5. a kind of full address calibration system for supporting super large nominal data amount, it is characterised in that: including sequentially connected host computer,
CCP/XCP communication module, ECU, the ECU are respectively equipped with memory, RAM, application layer program module, and the host computer passes through institute
It states CCP/XCP communication module and sends a command to the ECU to switch the calibration state of the ECU, the memory is for saving
The initial value of whole parameters, the RAM are used to save the calibration value of specified parameter, and the application layer program module refers to for reading
Determine the initial value of parameter, calibration is carried out to specified parameter and calibration value is written in the RAM, the host computer passes through described
CCP/XCP communication module reads the final calibration value of specified parameter.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910003501.8A CN109656607A (en) | 2019-01-03 | 2019-01-03 | A kind of full address scaling method that supporting super large nominal data amount and system |
| PCT/CN2019/084924 WO2020140354A1 (en) | 2019-01-03 | 2019-04-29 | Full address calibration method and system supporting ultra-large calibration data volume |
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| CN201910003501.8A CN109656607A (en) | 2019-01-03 | 2019-01-03 | A kind of full address scaling method that supporting super large nominal data amount and system |
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| WO (1) | WO2020140354A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110553788A (en) * | 2019-09-06 | 2019-12-10 | 霍丁格包尔文(苏州)电子测量技术有限公司 | Calibration method of sensor signal transmitting device |
| WO2020140354A1 (en) * | 2019-01-03 | 2020-07-09 | 广西玉柴机器股份有限公司 | Full address calibration method and system supporting ultra-large calibration data volume |
| 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 |
| CN113191071A (en) * | 2021-03-29 | 2021-07-30 | 广西玉柴机器股份有限公司 | Method for virtually calibrating engine model and related device thereof |
| CN113805559A (en) * | 2020-06-17 | 2021-12-17 | 北京新能源汽车股份有限公司 | Control parameter processing method, device and equipment |
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| CN102446138A (en) * | 2011-09-19 | 2012-05-09 | 清华大学 | Method for calibrating MAP data of single chip system |
| CN102787932A (en) * | 2012-08-28 | 2012-11-21 | 江西直方数控动力有限公司 | Apparatus and method for matching and calibrating electric control diesel engine based on serial communication |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020140354A1 (en) * | 2019-01-03 | 2020-07-09 | 广西玉柴机器股份有限公司 | Full address calibration method and system supporting ultra-large calibration data volume |
| CN110553788A (en) * | 2019-09-06 | 2019-12-10 | 霍丁格包尔文(苏州)电子测量技术有限公司 | Calibration method of sensor signal transmitting device |
| CN113805559A (en) * | 2020-06-17 | 2021-12-17 | 北京新能源汽车股份有限公司 | Control parameter processing method, device and equipment |
| 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 |
| CN113191071A (en) * | 2021-03-29 | 2021-07-30 | 广西玉柴机器股份有限公司 | Method for virtually calibrating engine model and related device thereof |
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| WO2020140354A1 (en) | 2020-07-09 |
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Application publication date: 20190419 |