CN105022381A - Application technology related to data flow callback function - Google Patents
Application technology related to data flow callback function Download PDFInfo
- Publication number
- CN105022381A CN105022381A CN201410166808.7A CN201410166808A CN105022381A CN 105022381 A CN105022381 A CN 105022381A CN 201410166808 A CN201410166808 A CN 201410166808A CN 105022381 A CN105022381 A CN 105022381A
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- China
- Prior art keywords
- data stream
- fault diagnostic
- diagnostic apparatus
- automobile fault
- automobile
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Debugging And Monitoring (AREA)
- Testing And Monitoring For Control Systems (AREA)
Abstract
The invention relates to a software technology related to an automobile fault diagnostic instrument data flow callback function. The method comprises the steps that communication instructions of the operation state of each component of an automobile are acquired from an automobile electric control system by an automobile fault diagnostic instrument, the operation state of each component is visually displayed by the automobile fault diagnostic instrument through operation according to the instructions, and real-time refreshing is performed and the related parameter information, such as engine rotating speed and battery voltage, etc., of the current state of the automobile can be understood by maintenance personnel by viewing data flow. In order to maintain the characteristics of unified data flow display format, high real-time refreshing speed and accurate data display, an operation function address is stored in a storage device, and the pre-stored operation function address is acquired in operation and the function is invoked so that the system state can be rapidly and accurately displayed in real-time.
Description
Technical field
The art of this patent is used for the method for automobile fault diagnostic apparatus dataflow computing function readjustment, it is characterized in that the address of all dataflow computing functions has been preserved in memory, is just can adjust back this function by obtaining data stream operating function address in operational data result.
Background technology
OBDII agreement is a standard agreement of the associated engine exhaust emissions of International Environmental Protection tissue definition, can obtain the exhaust emissions situation of regarding Car engine and basic operation conditions by OBDII agreement.OBDII agreement all supported by the engine of most of vehicle on the market.
Automobile engine system is a typical comprehensive complication system, and from structure, the Mechatronic Systems that it is made up of each subsystems such as mechanical, electrical, liquid, belongs to multilayer hierarchical structure; From fault characteristic, it is complicated etc. that it usually shows as failure symptom complexity, causa relation between fault and fault, automobile fault diagnostic apparatus diagnoses automobile not comprehensive iff from read failure code, some difficult and complicated cases must need data stream to analyze, therefore data stream is indispensable for the diagnosis of automobile, must be quick, accurately, the status information of more new cars constantly, so the normal display of automobile fault diagnostic apparatus Streams Module is just particularly important.Data stream can react Current vehicle electric-control system running status, and maintenance master worker can accurately recognize the running state parameter of vehicle by it, thus can judge that whether travel condition of vehicle is normal exactly.Current is completed by the reading data flow function of automobile fault diagnostic apparatus to the acquisition of vehicle data stream, but there is the problems such as display interface disunity, Hua Ping, in real time refresh rate are slow in the reading data flow function of common automobile fault diagnostic apparatus, thus increases the difficulty judged travel condition of vehicle.Software development difficulty is large, is not suitable for software batch exploitation
Summary of the invention
In order to overcome the above-mentioned defect of automobile fault diagnostic apparatus reading data flow function, the invention provides a kind of data stream function callbacks, the unification at automobile fault diagnostic apparatus reading data flow Fumction display interface can be improved by it, real-time refresh rate, reduce software development difficulty.
What the technology of the present invention adopted is the data structure of store data stream in the storer of automobile fault diagnostic apparatus, data stream PID, data stream explicit function are loaded into corresponding fixed memory region, obtaining its address required when carrying out the computing of data stream result in memory, finally calling this data stream explicit function to realize the refreshing of data stream.Because vehicle data stream information is real-time change, software ceaselessly calculates result according to the change of information of vehicles and shows, and serves the effect refreshed in real time
Beneficial effect of the present invention, adopts this invention technology refresh rate can promote 5 times.The data stream option of general vehicle is more than 200, as long as software developer is stored into the dataflow computing function address of each and formulates storage area, can reduce development time and development difficulty like this, employing data stream function callbacks software development time can foreshorten to original 1/5th.According to statistics, because data volume is large, need again renewal constantly, do not adopt Streams Module callbacks often can occur diagnostic equipment display flower screen, the probability of data display mistake is 70%, and the probability adopting this invention technology to occur is 0.5%.
Embodiment
As Fig. 1: take automobile fault diagnostic apparatus as platform, callbacks is utilized to realize the normal display of data stream, obtain the communication cryptology of each parts running status of this vehicle from vehicle electrically controlling system according to automobile fault diagnostic apparatus, this code of computing function command calculations formation value is utilized to demonstrate the running status of each parts fast, intuitively, and refresh in real time, by checking data stream, maintenance personal just can recognize the information of correlation parameter under automobile current state, by with the comparing of normal value, the maintenance of convenient for maintaining personnel.
As Fig. 2: before automobile fault diagnostic apparatus communicates with vehicle electrically controlling system, diagnostic equipment utilizes and loads function loading data stream title in advance, display sum, data stream display structure, data stream entries PID, data-flow computation function and data stream explicit function are to fixing ram region, diagnostic equipment system automatically generates the address of each module and preserves its address, obtained a result after value after automobile fault diagnostic apparatus to obtain this vehicle each parts running status code from vehicle electrically controlling system by computing function, adjust back loading module display routine in advance simultaneously, the address that data parameter stores, explicit function is utilized to realize modules simultaneous display.
Utilize call back function the most intuitively result be exactly that data stream display interface does not flash, dynamic data upgrades, turns over screen speed and is exceedingly fast, and more there will not be screen stuck phenomenon.
Accompanying drawing explanation
Fig. 1 is data stream call back function application technology main frame schematic diagram
Fig. 2 is data stream call back function application technology terminal schematic diagram.
Claims (5)
1. the application technology of an automobile fault diagnostic apparatus data stream call back function, it is characterized in that the running state information instruction being obtained this various vehicle components by automobile fault diagnostic apparatus from vehicle electrically controlling system to be detected, according to its instruction code and data stream option, the address of corresponding data stream operating function is obtained in the storer of automobile fault diagnostic apparatus, then function call is carried out according to operating function address, last display data stream title and operation result.
2. require the application technology of described automobile fault diagnostic apparatus data stream call back function according to right 1, it is characterized in that carrying out function call according to operating function address, when not knowing to survey any vehicle, the unification of measure for fulfill.
3. the application technology of the automobile fault diagnostic apparatus data stream call back function according to the requirement of right 2, is characterized in that the unification of measure for fulfill, can refresh display data stream option and operation result directly perceived, quick, in real time.
4. the application technology of the automobile fault diagnostic apparatus data stream call back function according to the requirement of right 3, is characterized in that the conversion by indirect method, realizes resource and maximizes.
5. the application technology of the automobile fault diagnostic apparatus data stream call back function according to the requirement of right 4; it is characterized in that the research and development management of relatively scale; by reducing the research and development difficulty of specific program developer, guaranteeing the consistance of code quality, being convenient to our large batch of exploitation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410166808.7A CN105022381A (en) | 2014-04-24 | 2014-04-24 | Application technology related to data flow callback function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410166808.7A CN105022381A (en) | 2014-04-24 | 2014-04-24 | Application technology related to data flow callback function |
Publications (1)
| Publication Number | Publication Date |
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| CN105022381A true CN105022381A (en) | 2015-11-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410166808.7A Pending CN105022381A (en) | 2014-04-24 | 2014-04-24 | Application technology related to data flow callback function |
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| CN (1) | CN105022381A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110597853A (en) * | 2019-07-31 | 2019-12-20 | 深圳市元征科技股份有限公司 | Data stream reading method, vehicle-mounted equipment and storage medium |
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| JPH0291539A (en) * | 1988-09-28 | 1990-03-30 | Fuji Heavy Ind Ltd | Vehicle diagnostic system |
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| CN101853291A (en) * | 2010-05-24 | 2010-10-06 | 合肥工业大学 | Data flow based car fault diagnosis method |
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| CN101923348A (en) * | 2010-07-16 | 2010-12-22 | 北京工业大学 | Vehicle-mounted fault diagnosis system and method for hybrid electric vehicle based on CANopen |
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| CN102981501A (en) * | 2012-11-30 | 2013-03-20 | 重庆邮电大学 | Automobile ECU (Electronic Control Unit) fault diagnosis information matching method based on XML (Extensive Makeup Language) |
| CN103019232A (en) * | 2012-12-18 | 2013-04-03 | 天津清源电动车辆有限责任公司 | Fault diagnosis system for automobiles |
| CN103034226A (en) * | 2011-10-09 | 2013-04-10 | 天津市优耐特汽车电控技术服务有限公司 | Method and device for vehicle failure real-time group diagnosis |
| CN103226565A (en) * | 2013-01-30 | 2013-07-31 | 王志欣 | Method for processing data flows of automobile engine |
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2014
- 2014-04-24 CN CN201410166808.7A patent/CN105022381A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0291539A (en) * | 1988-09-28 | 1990-03-30 | Fuji Heavy Ind Ltd | Vehicle diagnostic system |
| CN101339499A (en) * | 2007-07-03 | 2009-01-07 | 北京金奔腾译车通科技有限公司 | Automobile decoder system exploitation method |
| CN201681299U (en) * | 2009-11-13 | 2010-12-22 | 上汽通用五菱汽车股份有限公司 | Computerized automobile fault diagnosis system |
| CN101853291A (en) * | 2010-05-24 | 2010-10-06 | 合肥工业大学 | Data flow based car fault diagnosis method |
| CN101923348A (en) * | 2010-07-16 | 2010-12-22 | 北京工业大学 | Vehicle-mounted fault diagnosis system and method for hybrid electric vehicle based on CANopen |
| CN102053832A (en) * | 2010-12-28 | 2011-05-11 | 奇瑞汽车股份有限公司 | Method for optimizing user operating interface of automobile diagnosis instrument and reducing upgrade frequency of diagnosis instrument |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110597853A (en) * | 2019-07-31 | 2019-12-20 | 深圳市元征科技股份有限公司 | Data stream reading method, vehicle-mounted equipment and storage medium |
| CN110597853B (en) * | 2019-07-31 | 2023-06-02 | 深圳市元征科技股份有限公司 | Data stream reading method, vehicle-mounted equipment and storage medium |
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Application publication date: 20151104 |