CN107171893A - Automatic test platform and its method of testing based on CAN network - Google Patents
Automatic test platform and its method of testing based on CAN network Download PDFInfo
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Abstract
The invention discloses a kind of automatic test platform based on CAN network and its method of testing, it includes test cabinet, includes multiple analog modules inside it, test cabinet is connected with oscillograph and control main frame；The test cabinet is respectively connecting on CAN to be detected with oscillograph；The integrated operation in practical work process of the automatic test platform based on CAN network in the application is more easy, staff can handle to obtain the detection data of CAN network by its automatic detection, and it makes its discrimination precision high by the simulation test successively for multiple nodes, False Rate is low, and performance is more reliable and stable.
Description
Technical field
The present invention relates to vehicle electric Electrical Testing field, especially a kind of automatic test platform based on CAN network
And its method of testing.
Background technology
The CAN network function in automobile has the trend become increasingly complex in recent years, therewith client to the function of CAN network with
And performance dependence test requires also more and more higher；For above-mentioned situation, it is limited to by the way of manual testing uncertain
And randomness, therefore cause it excessive and false failure rate is higher for the test pressure of CAN network, therefore, using automation CAN nets
Network test is particularly important.Among prior art, the automatic test mode of CAN network is mainly included with Types Below：
1）Vehicle CAN network is tested：The CAN network test carried out i.e. on real vehicle, vehicle CAN network is tested by real vehicle
Measured in CAN network to obtain relatively accurate data, then can be directly on vehicle body for the failure in CAN network
Module is directly provided, and the node of CAN message also on real vehicle is sent in real time to be completed by equipment such as outside oscillograph CAN analyzers
Test.
2）Single node CAN network is tested：I.e. according to single node and dummy node（Such as CAN analyzers or oscillograph）Composition
Virtual vehicle body CAN network carries out CAN network test, and it is using the test of dummy node with for the CAN of single node ginsengs
The failure that number index is carried out in accurate feature measurement, CAN network is then simulated by dummy node；At the same time,
Also by dummy node simulation vehicle body, each node just sends CAN message to message in CAN network, and passes through oscillograph and CAN points
The equipment such as analyzer complete test.
Above CAN network test mode is in actual mechanical process, and the CAN network in the test of vehicle CAN network is although complete
The full virtual condition for meeting vehicle body, but failure in some CAN networks is difficult to be simulated by actual node（Such as BCM, ABS
Node）, and itself once in test process artificial manufacturing fault be likely to damage whole node and car network, meanwhile, one
A little triggering property CAN messages also are difficult to be triggered using actual node and produced.And the CAN network in the test of single node CAN network is surveyed
Although the problem of examination is solved in the test of vehicle CAN network, there is meeting in larger error, and test in it in accuracy
There is a situation where that single node test is without exception but vehicle test is abnormal to occur；In addition, being entered using CAN network analyzer or oscillograph
Row measurement, it must assure that test equipment has CAN network analytic function, and either CAN network analyzer is also or with CAN nets
The oscillograph of network analytic function, it is more high on hardware cost.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of automatic test platform of CAN network and its method of testing,
It can realize the High Precision Automatic detection process for CAN network while testing cost is controlled.
In order to solve the above technical problems, the present invention relates to a kind of automatic test platform based on CAN network, it includes
Test cabinet, includes multiple analog modules inside it, test cabinet is connected with oscillograph and control main frame；The test cabinet
It is respectively connecting to oscillograph on CAN to be detected.
As a modification of the present invention, the test cabinet is connected with programmable power supply, and it can pass through programmable power supply
It is powered for the test platform in the application, and to control programmable power supply for voltage, electricity the need for being simulated according to vehicle
Stream and out-put supply waveform signal etc. are adjusted, further to improve the applicability of test platform.
As a modification of the present invention, it is attached between the oscillograph and test cabinet by usb bus, it is described
It is attached between test cabinet and control main frame by CAN, it is total by UART between the oscillograph and control main frame
Line is attached.
As a modification of the present invention, the oscillograph is connected on CAN to be detected, for monitoring in real time
The level and time parameter of vehicle sample CAN to be detected.
The method of testing of the above-mentioned automatic test platform based on CAN network, it includes following job step：
1) test program in test cabinet and control main frame is initialized；
2) it is ranked up for multiple modules to be tested on CAN network, respectively with the test step of each module to be tested
The expected data of the rapid and module to be tested forms the corresponding test case of multiple modules to be tested；
3) test cabinet read step 2 is passed through）In multiple test cases, based on the testing procedure in each test case with
Carry out performing processing successively for multiple test cases；
4) by oscillograph for step 3）In current test case carry out test processes, test the data obtained is transmitted to test
Among rack；
5) test cabinet is by step 4）The test data of middle acquisition is transmitted to control main frame, and control main frame surveys test case
Examination the data obtained is compared with the expected data in test case；
6) when step 5）The data that middle test cabinet is read are virtual value, then in step 3）On the basis of read next test
The corresponding test case of step simultaneously carries out execution processing；When step 5）The data that middle test cabinet is read are invalid value, then weigh
It is new to perform step 4）.
The invalidating of above-mentioned data is whether detected data meet respective modules in current test case
No matter authority data, i.e., detect whether data meet expected data, is valid data when it meets the data standard of setting.
As a modification of the present invention, the job step of the test program includes：Control main frame receives all survey
It is raw according to each testing case the data obtained and the comparative result of its expected data after example test the data obtained on probation
Into complete vehicle fault code and vehicle examining report；The control main frame by above-mentioned complete vehicle fault code send to test cabinet it
In, and pass through the vehicle environment of multiple analog modules simulation vehicle sample to be detected in test cabinet.Using above-mentioned technical side
Case, it can be by the record for detection data with handling and then causing the automatic test based on CAN network in the application
The operation of platform and its method of testing is more easy.
Using automatic test platform of the above-mentioned technical proposal based on CAN network and method of testing, it uses test
Multiple analog modules in rack are to form multiple dummy nodes, and by the simulation work of above-mentioned multiple analog modules to realize
For the simulation work of test object CAN network, to coordinate oscillograph to complete CAN network measurement processing.It is above-mentioned to be based on CAN network
Automatic test platform and method of testing using conventional equipment carry out CAN network test processes so that its test
Cost is effectively controlled, and the test cabinet in the application uses integrated equipment, and it is that outside survey can be achieved to coordinate oscillograph
Try the succinct setting of equipment.
The integrated operation in practical work process of the automatic test platform based on CAN network in the application is more simple
Just, staff can be handled to obtain the detection data of CAN network by its automatic detection, and it passes through for multiple nodes
Simulation test successively make its discrimination precision high, False Rate is low, and performance is more reliable and stable.
Brief description of the drawings
Fig. 1 is schematic diagram of the present invention；
Fig. 2 is detection method schematic diagram in the present invention；
Reference numerals list：
1-test cabinet, 2-oscillograph, 3-control main frame, 4-programmable power supply.
Embodiment
With reference to embodiment, the present invention is furture elucidated, it should be understood that following embodiments are only used for
The bright present invention rather than limitation the scope of the present invention.It should be noted that the word "front", "rear" used below in description,
"left", "right", "up" and "down" refer to the direction in accompanying drawing, and word " interior " and " outer " are referred respectively to towards or away from specific
The direction at component geometry center.
Embodiment 1
A kind of automatic test platform based on CAN network as shown in Figure 1, it includes test cabinet 1, includes inside it
Multiple analog modules, test cabinet 1 is connected with oscillograph 2 and control main frame 3；The test cabinet 1 is connected respectively with oscillograph 2
On to CAN to be detected.
As a modification of the present invention, it is attached between the oscillograph 2 and test cabinet 1 by usb bus, institute
State and be attached between test cabinet 1 and control main frame 3 by CAN, passed through between the oscillograph 2 and control main frame 3
UART buses are attached.
The method of testing of the above-mentioned automatic test platform based on CAN network, it includes following job step：
1) test program in test cabinet 1 and control main frame 2 is initialized；
2) it is ranked up for multiple modules to be tested on CAN network, respectively with the test step of each module to be tested
The expected data of the rapid and module to be tested forms the corresponding test case of multiple modules to be tested；
3) read step 2 of test cabinet 1 is passed through）In multiple test cases, based on the testing procedure in each test case
To carry out performing processing successively for multiple test cases；
4) by oscillograph 2 for step 3）In current test case carry out test processes, test the data obtained is transmitted to survey
Among test-run a machine cabinet；
5) test cabinet 1 is by step 4）The test data of middle acquisition is transmitted to control main frame 3, and control main frame 3 will be tested and used
Example test the data obtained is compared with the expected data in test case；
6) when step 5）The data that middle test cabinet is read are virtual value, then in step 3）On the basis of read next test
The corresponding test case of step simultaneously carries out execution processing；When step 5）The data that middle test cabinet is read are invalid value, then weigh
It is new to perform step 4）.
Using automatic test platform of the above-mentioned technical proposal based on CAN network and method of testing, it uses test
Multiple analog modules in rack are to form multiple dummy nodes, and by the simulation work of above-mentioned multiple analog modules to realize
For the simulation work of test object CAN network, to coordinate oscillograph to complete CAN network measurement processing.It is above-mentioned to be based on CAN network
Automatic test platform and method of testing using conventional equipment carry out CAN network test processes so that its test
Cost is effectively controlled, and the test cabinet in the application uses integrated equipment, and it is that outside survey can be achieved to coordinate oscillograph
Try the succinct setting of equipment.
The integrated operation in practical work process of the automatic test platform based on CAN network in the application is more simple
Just, staff can be handled to obtain the detection data of CAN network by its automatic detection, and it passes through for multiple nodes
Simulation test successively make its discrimination precision high, False Rate is low, and performance is more reliable and stable.
Embodiment 2
As a modification of the present invention, the test cabinet 1 is connected with programmable power supply 4, and it can be by programmable power supply
Test platform in the application is powered, and to control programmable power supply for voltage, electric current the need for being simulated according to vehicle
And out-put supply waveform signal etc. is adjusted, further to improve the applicability of test platform.
Remaining feature of the present embodiment and advantage are same as Example 1.
Embodiment 3
As a modification of the present invention, the oscillograph 2 is connected on CAN to be detected, is treated for monitoring in real time
Detect the level and time parameter of vehicle sample CAN.
Remaining feature of the present embodiment and advantage are same as Example 1.
Embodiment 4
As a modification of the present invention, the job step of the test program includes：Control main frame 3 receives all tests and used
After example test the data obtained, according to each testing case the data obtained and the comparative result of its expected data, generate whole
Car failure code and vehicle examining report；The control main frame sends above-mentioned complete vehicle fault code to test cabinet,
And the vehicle environment of vehicle sample to be detected is simulated by multiple analog modules in test cabinet.Using above-mentioned technical proposal,
It can be by the record for detection data with handling and then causing the automatic test platform based on CAN network in the application
And its operation of method of testing is more easy.
Remaining feature of the present embodiment and advantage are same as Example 1.
Claims (6)
1. a kind of automatic test platform based on CAN network, it is characterised in that the automatic test based on CAN network
Platform includes test cabinet, includes multiple analog modules inside it, test cabinet is connected with oscillograph and control main frame；Institute
Test cabinet is stated to be respectively connecting on CAN to be detected with oscillograph.
2. according to the automatic test platform based on CAN network described in claim 1, it is characterised in that the test cabinet
It is connected with programmable power supply.
3. according to the automatic test platform based on CAN network described in claim 1, it is characterised in that the oscillograph with
It is attached, is connected between the test cabinet and control main frame by CAN by usb bus between test cabinet
Connect, be attached between the oscillograph and control main frame by UART buses.
4. according to the automatic test platform based on CAN network described in claim 1, it is characterised in that the oscillograph connects
It is connected on CAN to be detected, level and time parameter for monitoring vehicle sample CAN to be detected in real time.
5. a kind of test side of automatic test platform based on CAN network according to described in Claims 1-4 any one
Method, it is characterised in that the method for testing of the automatic test platform based on CAN network includes following job step：
1）By the test program initialization in test cabinet and control main frame；
2）It is ranked up for multiple modules to be tested on CAN network, respectively with the test step of each module to be tested
The expected data of the rapid and module to be tested forms the corresponding test case of multiple modules to be tested；
3）Pass through test cabinet read step 2）In multiple test cases, based on the testing procedure in each test case with
Carry out performing processing successively for multiple test cases；
4）By oscillograph for step 3）In current test case carry out test processes, test the data obtained is transmitted to test
Among rack；
5）Test cabinet is by step 4）The test data of middle acquisition is transmitted to control main frame, and control main frame surveys test case
Examination the data obtained is compared with the expected data in test case；
6）When step 5）The data that middle test cabinet is read are virtual value, then in step 3）On the basis of read next test
The corresponding test case of step simultaneously carries out execution processing；When step 5）The data that middle test cabinet is read are invalid value, then weigh
It is new to perform step 4）.
6. according to the automatic test platform based on CAN network described in claim 5, it is characterised in that the test program
Job step include：Control main frame is received after all testing case the data obtaineds, is surveyed according to each test case
Try the data obtained and the comparative result of its expected data, generation complete vehicle fault code and vehicle examining report；The control master
Machine sends above-mentioned complete vehicle fault code to test cabinet, and to be checked by multiple analog modules simulation in test cabinet
Survey the vehicle environment of vehicle sample.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710444700.3A CN107171893A (en) | 2017-06-13 | 2017-06-13 | Automatic test platform and its method of testing based on CAN network |
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| CN201710444700.3A CN107171893A (en) | 2017-06-13 | 2017-06-13 | Automatic test platform and its method of testing based on CAN network |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107819643A (en) * | 2017-09-30 | 2018-03-20 | 吉利汽车研究院（宁波）有限公司 | A kind of automatic test device |
| CN108566323A (en) * | 2018-03-21 | 2018-09-21 | 武汉乐庭软件技术有限公司 | A kind of T-Box automated testing methods and system |
| CN108829608A (en) * | 2018-07-09 | 2018-11-16 | 北京首汽智行科技有限公司 | A kind of automatization test system and method for the Intelligent vehicle-mounted terminal equipment based on automobile simulator |
| CN110456763A (en) * | 2019-07-26 | 2019-11-15 | 中国第一汽车股份有限公司 | The test macro and method of intelligent driving controller |
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| CN204116943U (en) * | 2014-09-12 | 2015-01-21 | 中国第一汽车股份有限公司 | Vehicle-mounted electronic control unit CAN communication automation system proving installation |
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| CN202512433U (en) * | 2012-02-07 | 2012-10-31 | 北京汽车股份有限公司 | Test cabinet of vehicle network |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107819643A (en) * | 2017-09-30 | 2018-03-20 | 吉利汽车研究院（宁波）有限公司 | A kind of automatic test device |
| CN108566323A (en) * | 2018-03-21 | 2018-09-21 | 武汉乐庭软件技术有限公司 | A kind of T-Box automated testing methods and system |
| CN108566323B (en) * | 2018-03-21 | 2020-11-03 | 武汉乐庭软件技术有限公司 | T-Box automated testing method and system |
| CN108829608A (en) * | 2018-07-09 | 2018-11-16 | 北京首汽智行科技有限公司 | A kind of automatization test system and method for the Intelligent vehicle-mounted terminal equipment based on automobile simulator |
| CN108829608B (en) * | 2018-07-09 | 2021-12-10 | 北京首汽智行科技有限公司 | Simulator-based automatic test system and method for vehicle-mounted terminal equipment |
| CN110456763A (en) * | 2019-07-26 | 2019-11-15 | 中国第一汽车股份有限公司 | The test macro and method of intelligent driving controller |
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Application publication date: 20170915 |