CN105259894B - The detection method of the detection test system of motor vehicle diagnostic equipment - Google Patents
The detection method of the detection test system of motor vehicle diagnostic equipment Download PDFInfo
- Publication number
- CN105259894B CN105259894B CN201510651976.XA CN201510651976A CN105259894B CN 105259894 B CN105259894 B CN 105259894B CN 201510651976 A CN201510651976 A CN 201510651976A CN 105259894 B CN105259894 B CN 105259894B
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- diagnostic equipment
- measured
- master controller
- host computer
- main control
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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
- G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
- G05B23/0256—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults injecting test signals and analyzing monitored process response, e.g. injecting the test signal while interrupting the normal operation of the monitored system; superimposing the test signal onto a control signal during normal operation of the monitored system
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
A kind of detection test system of motor vehicle diagnostic equipment, it includes diagnostic equipment to be measured, power supply unit, it is characterised in that：The output end of diagnostic equipment to be measured is connect by OBD interfaces with CAN transceiver unit input terminal；CAN transceiver unit is connected with Main Control Unit, the Main Control Unit is connected by direct fault location module with load box unit, the Main Control Unit is also connected by host computer serial line interface with upper machine host, and host computer host output end is connect with display input terminal；The CAN transceiver unit output end is also connected with upper machine host input terminal.System with good stability, reliability and reusability are tested in the detection of the present invention, but also are had the characteristics that easy to operate and inexpensive；The present invention be using a kind of the detection test system with direct fault location function come test motor vehicle diagnostic equipment detect vehicle trouble function.
Description
Technical field
The invention belongs to automotive electronics diagnostic techniques fields, concretely relate to a kind of with direct fault location function and use
System is tested in the detection of the motor vehicle diagnostic equipment of detection vehicle trouble.
Background technology：
In recent years, China Automobile Industry develops rapidly, and more and more electric functions have appeared on automobile, automobile
The quantity of upper electronic control unit is growing day by day.In the whole life cycle of automobile, the quality and effect that diagnose and repair after sale
Rate is increasingly becoming the emphasis of consumer's concern.The application of automobile electric control system repair high-tech detection device is that development from now on becomes
Gesture.This kind of equipment uses mechanics of communication, electronic technology and Computer Applied Technology, implements non-disassembly measurement diagnosis to automobile, carries
High detection and maintenance efficiency are widely used in auto repair and maintenance.
Currently, the industry giant as market after automobile, the international business such as resistance to treasured, U.S. SPX are all in fact for German Bosch, the U.S.
Enter China one after another, meanwhile, the strength of market enterprise is also going from strength to strength after domestic automobile, market competition after the automobile in China
It is fierce to compare.The advantage of scale is big although international automobile diagnosis and repair equipment enterprise has, technology is relatively advanced etc., state
Interior automobile diagnosis and repair equipment enterprise also has comparable advantage in price, cost etc., with domestic automobile diagnosis and repair
The continuous improvement of equipment enterprise technology level, competitiveness in the international market also constantly enhance.
Current automotive diagnostic installation is still in adjustment and the expansionary phase at initial stage in China, although compared with initial stage have it is considerable into
Step, but there are still a large amount of problems, mainly embody a concentrated reflection of detection execution standard differs, test condition is different, high-tech accounting still
Relatively low, detection reliability has deviation etc..But because of this, industry is urgently integrated and specification, existing market is latent
Power should not be underestimated.
Invention content：
The object of the present invention is to provide a kind of motor vehicles with direct fault location function and for detecting vehicle trouble to examine
System is tested in the detection of disconnected instrument.And whether the diagnostic function for testing motor vehicle diagnostic equipment is consistent with prespecified diagnosing protocol.
The purpose of the present invention is achieved through the following technical solution：A kind of detection test system of motor vehicle diagnostic equipment
System, it includes diagnostic equipment to be measured, power supply unit, it is characterised in that：The output end of diagnostic equipment to be measured passes through OBD interfaces and CAN
Transceiver unit input terminal connects；CAN transceiver unit is connected with Main Control Unit, which passes through failure
Injection module is connected with load box unit, and the Main Control Unit also passes through host computer serial line interface and upper machine host phase
Connection, host computer host output end are connect with display input terminal；The CAN transceiver unit output end also with upper machine host
Input terminal is connected.
Described in the test system：
Main Control Unit, for simulating Single Electron control unit or entire automobile electric system.In Main Control Unit
There is diagnosis communication module in portion, which can store the diagnosing protocol data to match with diagnostic equipment to be measured, can be examined according to itself
The failure measured generates and preserves diagnostic trouble code.When Main Control Unit receives the read failure code that diagnostic equipment to be measured is sent
After request command, Main Control Unit can carry out response according to the diagnosing protocol of its built in diagnostics communication module.When diagnostic equipment is sent out
When diagnosing protocol Data Matching in the read failure code request command and master controller that send, main control is replied according to diagnosing protocol
Correct response data, when the diagnosing protocol data in the read failure code request command and master controller that diagnostic equipment is sent not
Timing, master controller can reply corresponding errored response data according to diagnosing protocol, to judge the reading of diagnostic equipment transmission to be measured
Take whether error code request command meets initial definition diagnosing protocol；
CAN transceiver unit is realized and is diagnosed between master controller and diagnostic equipment to be measured for sending and receiving diagnostic command
The interaction of order, while diagnosis message data stream is uploaded to upper machine host；
Display unit, for showing the diagnostic data mutually received and dispatched between master controller and diagnostic equipment to be measured；
OBD interfaces, the connecting interface for diagnostic equipment to be measured and test system；
Box unit is loaded, the output loading for simulating Single Electron control unit or entire automobile electric system can basis
Specific requirements change the type and quantity of load；
Direct fault location module is for simulating Single Electron control unit or vehicle electrically with load box unit matching
The various electric faults for physical layer of uniting, for example, sensor or actuator the failures such as short circuit, open circuit.
Host computer serial line interface is connect for master controller with host computer, will be matched with diagnostic equipment to be measured by host computer
Diagnosing protocol data download in the diagnosis communication module of master controller, or examined by host computer to change in master controller
Disconnected communication module, to realize the diagnostic function for testing a variety of diagnostic equipments；
Power supply unit, for powering to master controller；
Upper machine host is downloaded the diagnosing protocol data to match with diagnostic equipment to be measured by host computer serial line interface
In diagnosis communication module inside to master controller；It is examined by what is interacted between CAN transceiver reception master controller and diagnostic equipment
Disconnected message, and show over the display, test report is finally generated according to the diagnosis message of record, shows current diagnosis to be measured
Which diagnostic command instrument supports and does not support which diagnostic command.
System with good stability, reliability and reusability are tested in the detection of the present invention, but also with operation
The features such as simple and low cost；Test system is detected using motor vehicle diagnostic equipment to test the research of motor vehicle diagnostic equipment at present
Until, related report is yet there are no, the present invention is that the detection test system with direct fault location function is motor-driven to test using a kind of
Vehicle diagnostic equipment detects the function of vehicle trouble.
Description of the drawings
Fig. 1 is the structural principle block diagram of the present invention；
Fig. 2 is the principle sketch of the direct fault location module generation failure in Fig. 1；
Fig. 3 is the work flow diagram of the detection test system of motor vehicle diagnostic equipment of the present invention.
Below in conjunction with attached drawing and by example, invention is further described in detail, but following examples is only this
Invent example therein, do not represent rights protection scope defined by the present invention, the scope of the present invention with
Subject to claims.
Specific implementation mode：
Example 1
Shown in Fig. 1-Fig. 3, it includes diagnostic equipment to be measured, and the output end of the diagnostic equipment to be measured passes through OBD interfaces and CAN
Transceiver unit input terminal connects；CAN transceiver unit is connected with Main Control Unit, which passes through failure
Injection module is connected with load box unit, and the Main Control Unit also passes through host computer serial line interface and upper machine host phase
Connection, host computer host output end are connect with display input terminal；The CAN transceiver unit output end also with upper machine host
Input terminal is connected.In addition, the power supply unit is connected with Main Control Unit input terminal.
The principle that direct fault location module in the present invention generates failure is as shown in Figure 2；Fig. 3 is explained as follows：PIN in figure
Each stitch of end connection Main Control Unit interface, the ends CL15 connects power supply with the ends CL30, and the ends GND are ground terminal, based on the ends COM
The connecting pin at the ends PIN when controller unit works normally.When PIN is connected with CL15 and CL30, Main Control Unit corresponds to stitch
To power supply short circuit；When PIN is connected with GND, Main Control Unit corresponds to stitch to shorted to earth；When PIN is connected with COM, master control
Device unit processed corresponds to stitch and is connected with load box corresponding end, is generated without failure；When PIN and COM disconnections, Main Control Unit pair
It answers stitch pair and is correspondingly connected with end open circuit, to generate the various electrical of Main Control Unit or entire automobile electric system physical layer
Failure.
Preparation：The diagnosing protocol data to match with diagnostic equipment to be measured are downloaded to master by host computer by serial line interface
In the diagnosis communication module of controller.
Concrete operation step is as follows：
1. diagnostic equipment to be measured is connected by OBD interfaces with test system；
2. adjusting direct fault location module according to the diagnostic norms initially defined generates corresponding failure；
3. diagnostic equipment to be measured sends read failure code request command according to the definition of diagnosing protocol to master controller；
4. after master controller receives read failure code request command, judging what diagnostic equipment to be measured was sent according to diagnosing protocol
Whether correct diagnose request command；
5. if the read failure code request command that diagnostic equipment to be measured is sent meets diagnosing protocol, master controller will be according to examining
The correct response data of disconnected Protocol answers diagnostic equipment to be measured；
6. if the read failure code request command that diagnostic equipment to be measured is sent does not meet diagnosing protocol, master controller is by basis
Diagnosing protocol replys diagnostic equipment errored response data to be measured；
7. host computer receives the diagnosis message of interaction between diagnostic equipment and master controller to be measured by CAN transceiver and records
Get off, last host computer generates test report according to the diagnosis message of record, and vehicle trouble is read to carry out testing and diagnosing instrument
Whether the function of code is realized.
Example 2
The structure connection relation and operation principle of the example are identical as example 1.
Concrete operation step is as follows：
1. diagnostic equipment to be measured is connected by OBD interfaces with test system；
2. diagnostic equipment to be measured sends diagnosis request command according to the definition of diagnosing protocol to master controller；
3. after master controller receives diagnosis request command, judging that the diagnosis that diagnostic equipment to be measured is sent is asked according to diagnosing protocol
Ask order whether correct；
4. if the diagnosis request command that diagnostic equipment to be measured is sent meets diagnosing protocol, master controller will be according to diagnosing protocol
Reply the correct response data of diagnostic equipment to be measured；
5. if the diagnosis request command that diagnostic equipment to be measured is sent does not meet diagnosing protocol, master controller will be assisted according to diagnosis
View replys diagnostic equipment errored response data to be measured；
Host computer receives the diagnosis message of interaction between diagnostic equipment and master controller to be measured by CAN transceiver and records
Come, last host computer according to the diagnosis message of record generate test report, to come testing and diagnosing instrument diagnostic function whether and
Diagnosing protocol is consistent.
Claims (1)
1. system is tested in a kind of detection method of the detection test system of motor vehicle diagnostic equipment, the detection of the motor vehicle diagnostic equipment
Include diagnostic equipment to be measured, power supply unit, it is characterised in that：The output end of diagnostic equipment to be measured is received and dispatched by OBD interfaces and CAN
Device unit input terminal connects；CAN transceiver units are connected with Main Control Unit, which is noted by failure
Enter module with load box unit to be connected, the Main Control Unit is also connected by host computer serial line interface with upper machine host
It connects, host computer host output end is connect with display input terminal；The CAN transceiver units output end also with upper machine host
Input terminal is connected, and the power supply unit is connected with Main Control Unit input terminal；
The detection method, including host computer are downloaded the diagnosing protocol data to match with diagnostic equipment to be measured by serial line interface
Further include following steps into the diagnosis communication module of master controller：
Step 1 connects diagnostic equipment to be measured by OBD interfaces with test system；
Step 2 adjusts the corresponding failure of direct fault location module generation according to the diagnostic norms initially defined；
Step 3, diagnostic equipment to be measured send read failure code request command according to the definition of diagnosing protocol to master controller；
After step 4, master controller receive read failure code request command, judge what diagnostic equipment to be measured was sent according to diagnosing protocol
Whether correct diagnose request command；
If the read failure code request command that step 5, diagnostic equipment to be measured are sent meets diagnosing protocol, master controller will be according to examining
The correct response data of disconnected Protocol answers diagnostic equipment to be measured；
If the read failure code request command that step 6, diagnostic equipment to be measured are sent does not meet diagnosing protocol, master controller is by basis
Diagnosing protocol replys diagnostic equipment errored response data to be measured；
Step 7, host computer receive the diagnosis message of interaction between diagnostic equipment and master controller to be measured by CAN transceivers and remember
Record is got off, and last host computer generates test report according to the diagnosis message of record, and motor vehicle event is read to carry out testing and diagnosing instrument
Whether the function of barrier code is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510651976.XA CN105259894B (en) | 2015-10-09 | 2015-10-09 | The detection method of the detection test system of motor vehicle diagnostic equipment |
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|---|---|---|---|
| CN201510651976.XA CN105259894B (en) | 2015-10-09 | 2015-10-09 | The detection method of the detection test system of motor vehicle diagnostic equipment |
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| Publication Number | Publication Date |
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| CN105259894A CN105259894A (en) | 2016-01-20 |
| CN105259894B true CN105259894B (en) | 2018-09-25 |
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| CN201510651976.XA Expired - Fee Related CN105259894B (en) | 2015-10-09 | 2015-10-09 | The detection method of the detection test system of motor vehicle diagnostic equipment |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107037804A (en) * | 2017-04-21 | 2017-08-11 | 深圳市元征科技股份有限公司 | Method, system and the computer-readable recording medium of simulated automotive communication |
| CN109213110B (en) * | 2017-06-29 | 2020-10-13 | 长城汽车股份有限公司 | Testing device and testing system of vehicle control unit |
| CN109960238B (en) * | 2017-12-26 | 2021-04-02 | 北京一雄信息科技有限公司 | Automatic test system and method for vehicle diagnostic instrument |
| CN109406906A (en) * | 2018-12-07 | 2019-03-01 | 上海星融汽车科技有限公司 | The detecting tool and detection method of SCR system diagnostic device |
| CN110596627B (en) * | 2019-08-22 | 2021-09-03 | 深圳市鹏巨术信息技术有限公司 | Detection method and device for vehicle diagnosis box |
| CN112327800A (en) * | 2020-10-27 | 2021-02-05 | 深圳市元征科技股份有限公司 | Vehicle detection method and device and diagnosis equipment |
| CN112304640A (en) * | 2020-10-30 | 2021-02-02 | 安徽江淮汽车集团股份有限公司 | OBD (on-board diagnostics) testing system and method |
| CN112731907B (en) * | 2020-12-30 | 2022-04-26 | 东风汽车有限公司 | Vehicle-mounted controller fault parallel injection testing method, electronic equipment and system |
| CN113112641A (en) * | 2021-04-21 | 2021-07-13 | 上海星融汽车科技有限公司 | Vehicle ECU (electronic control Unit) flashing method and lower computer of vehicle diagnostic instrument |
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| CN104483959A (en) * | 2014-11-04 | 2015-04-01 | 普华基础软件股份有限公司 | Fault simulation and test system |
| CN104568459A (en) * | 2014-12-15 | 2015-04-29 | 刘笑涡 | OBD intelligent device, test method and system thereof, and ECU simulator |
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| CN105259894A (en) | 2016-01-20 |
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