CN109358610A - The detection method of vehicle diagnostic equipment - Google Patents
The detection method of vehicle diagnostic equipment Download PDFInfo
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- CN109358610A CN109358610A CN201811503097.2A CN201811503097A CN109358610A CN 109358610 A CN109358610 A CN 109358610A CN 201811503097 A CN201811503097 A CN 201811503097A CN 109358610 A CN109358610 A CN 109358610A
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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
Abstract
A kind of detection method of vehicle diagnostic equipment, comprising: initial lane testing to be measured and remaining each group of lane testing to be measured.Detection method does not need other tooling devices, at low cost, testing process can quick copy, can detect all channels, master-slave equipment free switching is easy to detect quick without particular requirement, as a result accurately, it is objective, 10s can detecte completion.
Description
Technical field
The present invention relates to vehicle diagnostic equipment technical field more particularly to a kind of detection methods of vehicle diagnostic equipment.
Background technique
Diagnostic device is the equipment for vehicle diagnosis exploitation, is used for and vehicle control module communicates, read relevant parameter,
The parameter is for optimizing vehicle operation and after-sales service.
The communication modes of vehicle control module are varied, there is 232 agreements, 485 agreements, 1708 agreements, CAN protocol, K association
The various agreements such as view.In order to adapt to the various agreements of automobile, corresponding diagnostic device must have these functions.
When the agreement that diagnostic device is supported is more, design is more complicated, and the probability of failure is higher.The original intention of diagnostic device
It is that, if there are failures for equipment itself, will lead to diagnostic result in order to diagnose vehicle and be not allowed or can not diagnose.Therefore it must assure that
The function of diagnostic device itself is normal.
There is following two for the method that automotive diagnostic installation function is detected at present:
1, before and after PCB patch, the voltage of each test point on pcb board is detected, by the tooling of customization to judge the electricity
Whether road is normal；
2, it after diagnostic device assembles, with the automobile communication module that the device diagnostic function is intact, is tied according to diagnosis
Fruit judges whether the functions of the equipments are intact.
The shortcomings that both methods, is as follows:
1, it is tested by tooling, can only ensure the on-off of circuit, function difference caused by the difference of component itself can not
It detects；
2, the functionality of diagnostic device, each automobile communication module are judged by the intact automobile communication module of diagnostic function
Only one two kinds of agreements, test the automobile communication equipment that all agreements need to switch 4 pieces or more, and inefficiency operates numerous
It is miscellaneous, the subjective judgement with tester is relied on, it can not batch testing.
Summary of the invention
Based on this, in view of the above technical problems, a kind of detection method of vehicle diagnostic equipment is provided.
In order to solve the above technical problems, the present invention adopts the following technical scheme:
A kind of detection method of vehicle diagnostic equipment, comprising:
Initial lane testing to be measured:
After first diagnostic device receives the first test command, become main equipment, sends the by default TCH test channel
After two test commands give second opinion equipment, the second opinion equipment to receive second test command, into test mould
Formula, and become from equipment, while the information for having entered test pattern is fed back to described first by default initial channel to be measured
Diagnostic device judges that the second opinion is set if first diagnostic device receives the feedback information of second opinion equipment
Standby default initial channel to be measured be it is normal, it is described that preset initially channel to be measured identical as default TCH test channel type；
Remaining each group of channel to be measured is tested as follows:
First diagnostic device sends test data by the default TCH test channel and gives second opinion equipment, the survey
Trying data includes channel type, baud rate and testing algorithm ID, after the second opinion equipment receives the test data,
Corresponding channel to be measured and baud rate are switched to, and enables corresponding testing algorithm, then by described default initial to be measured
Ready data are fed back to first diagnostic device in channel；
After first diagnostic device receives feedback data, second is given by the TCH test channel of the correspondence channel type
Diagnostic device sends N bag data at random, after the second opinion equipment receives each bag data by the channel to be measured after switching,
It is calculated by the testing algorithm, and calculated result is fed back into the first diagnostic device, institute by the channel to be measured
It states after the first diagnostic device receives feedback result, is verified, confirm the correctness of data, if all correct, judge institute
State channel to be measured be it is normal, N be more than or equal to 1.
Show first diagnostic device to second opinion equipment respectively to the test result of wing passage by display device.
The display device is computer screen, and first test command is sent to first by the computer and examines
Disconnected equipment.
The computer is connect by USB line beam with first diagnostic device, and first diagnostic device is examined with second
Disconnected equipment is connected by harness, and the supply lines of the two is drawn from the harness.
First diagnostic device and second opinion equipment all have 4 groups of channels CAN, 1 group of K channel, 1 group of 232 channel
And 1 group of 485 channel, the default initial channel to be measured and default TCH test channel are 232 channels.
The N is 100.
Detection method does not need other tooling devices, at low cost, testing process can quick copy, can detect all
Channel, master-slave equipment free switching is easy to detect quick without particular requirement, as a result accurately, it is objective, 10s can detecte
At.
Detailed description of the invention
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments:
Fig. 1 is hardware structural diagram of the invention；
Fig. 2 is test result display interface schematic diagram of the invention；
Fig. 3 is test result display schematic diagram of the invention.
Specific embodiment
As shown in Figure 1, a kind of detection method of vehicle diagnostic equipment, comprising:
One, the initial channel to be measured of second opinion equipment 120 is tested:
After first diagnostic device 110 receives the first test command, become main equipment, is sent by default TCH test channel
Second test command is to second opinion equipment 120, after second opinion equipment 120 receives the second test command, into test mould
Formula, and become from equipment, while the information for having entered test pattern is fed back to by the first diagnosis by default initial channel to be measured
Equipment 110 judges second opinion equipment if the first diagnostic device 110 receives the feedback information of second opinion equipment 120
120 default initial channel to be measured is normal, wherein default initial channel to be measured is identical as default TCH test channel type.
Two, after the initial channel to be measured of second opinion equipment 120 is normal, to second opinion equipment 120 remaining be every
One group of channel to be measured is tested as follows:
First diagnostic device 110 sends test data to second opinion equipment 120, test data by default TCH test channel
Correspondence is switched to after second opinion equipment 120 receives test data including channel type, baud rate and testing algorithm ID
Channel to be measured and baud rate, and enable corresponding testing algorithm, then prepared just by default initial channel feedback to be measured
The data of thread give the first diagnostic device 110.
After first diagnostic device 110 receives feedback data, second is given by the TCH test channel of the above-mentioned channel type of correspondence
Diagnostic device 120 sends N bag data at random, and second opinion equipment 120 receives each bag data by the channel to be measured after switching
Afterwards, it is calculated by above-mentioned testing algorithm, and calculated result is fed back into the first diagnostic device by current channel to be measured
110, it after the first diagnostic device 110 receives feedback result, is verified, confirms the correctness of data, if n times feedback result is complete
Portion is correct, then judges that current channel to be measured is normal, wherein N is more than or equal to 1.
In the present embodiment, 100 N.
Preferably, in the present embodiment, the test in the first diagnostic device 110 channel to be measured each to second opinion equipment 120
As a result it is shown by display device 130.
Wherein, display device 130 is the display screen of computer 140, is shown in the form of indicator light on a display screen, referring to
Fig. 2；First test command is sent to the first diagnostic device 110 by computer 140.
As shown in Figure 1, computer 140 is connect by USB line beam 150 with the first diagnostic device 110, the first diagnostic device
110 are connect with second opinion equipment 120 by harness 160, and the supply lines 161 of the two is drawn from harness 160.
First diagnostic device 110 and second opinion equipment 120 all have 4 groups of channels CAN (CAN1, CAN2, CAN3 and
CAN4), 1 group of K channel, 1 group of 232 channel and 1 group of 485 channel are preset initial channel to be measured and are preset in the present embodiment
TCH test channel is 232 channels.
Testing algorithm is built in the first diagnostic device 110 and second opinion equipment 120, referring to table 1.
| Testing algorithm ID | Testing algorithm content |
| Seed1 | Data bit the last byte increases 1 certainly |
| Seed2 | Data bit first character section increases 1 certainly |
| Seed3 | Data bit high-low-position exchanges |
| Seed4 | Data are constant |
| Seed5 | All Shuo Juwei &FF |
Table 1
It is assumed below after initial channel to be measured is normal, is surveyed by CAN1,250k baud rate and seed1 algorithm
It tries certain and organizes channel to be measured:
1) master-slave equipment activates CAN1, Configuration of baud rate 250K, and algorithm seed1 is called to be calculated.
2) main equipment sends 00 00 00 00 00 00 00 00 data packets to from equipment by CAN1,250K baud rate.
3) after receiving the data by CAN1,250K baud rate from equipment, after seed1 is calculated, data packet 00
00 00 00 00 00 00 01。
4) 00 00 00 00 00 00 00 01 data packets master is sent to by CAN1,250K baud rate from equipment to set
It is standby.
5) main equipment is to after being sent to and being calculated by seed1 from the data packet 00 00 00 00 00 00 00 00 of equipment
It is 00 00 00 00 00 00 00 01.
6) data that main equipment comparison is fed back from equipment and the data oneself calculated, the current channel function to be measured if consistent
Normally, otherwise abnormal.
7) such 100 bag datas of circulation, the channel is normal if all normal, otherwise abnormal, and activates indicator light, referring to
Fig. 3.
Detection process of the present invention does not need other tooling devices, at low cost, testing process can quick copy, can detect all
Channel, master-slave equipment free switching is easy to detect quick without particular requirement, as a result accurately, it is objective, 10s can detecte
At.
But those of ordinary skill in the art it should be appreciated that more than embodiment be intended merely to illustrate this
Invention, and be not used as limitation of the invention, as long as in spirit of the invention, to embodiment described above
Variation, modification will all fall within the scope of claims of the present invention.
Claims (6)
1. a kind of detection method of vehicle diagnostic equipment characterized by comprising
Initial lane testing to be measured:
After first diagnostic device receives the first test command, become main equipment, sends second by default TCH test channel and survey
After examination order gives second opinion equipment, the second opinion equipment to receive second test command, into test pattern, and
As from equipment, while by default initial channel to be measured the information for having entered test pattern is fed back to described first and diagnosed and set
It is standby, if first diagnostic device receives the feedback information of second opinion equipment, judge the pre- of the second opinion equipment
If initially channel to be measured is normal, the default initial channel to be measured is identical as default TCH test channel type；
Remaining each group of channel to be measured is tested as follows:
First diagnostic device sends test data by the default TCH test channel and gives second opinion equipment, the test number
It is cut after the second opinion equipment receives the test data according to including channel type, baud rate and testing algorithm I D
Corresponding channel to be measured and baud rate are shifted to, and enables corresponding testing algorithm, then by described default initial to be measured logical
Ready data are fed back to first diagnostic device in road；
After first diagnostic device receives feedback data, by the TCH test channel of the correspondence channel type to second opinion
Equipment sends N bag data at random, logical after the second opinion equipment receives each bag data by the channel to be measured after switching
It crosses the testing algorithm to be calculated, and calculated result is fed back into the first diagnostic device by the channel to be measured, described
After one diagnostic device receives feedback result, verified, confirm the correctness of data, if all correct, judgement it is described to
Survey channel be it is normal, N is more than or equal to 1.
2. a kind of detection method of vehicle diagnostic equipment according to claim 1, which is characterized in that aobvious by display device
Show first diagnostic device to second opinion equipment respectively to the test result of wing passage.
3. a kind of detection method of vehicle diagnostic equipment according to claim 2, which is characterized in that the display device is
Computer screen, first test command are sent to the first diagnostic device by the computer.
4. a kind of detection method of vehicle diagnostic equipment according to claim 3, which is characterized in that the computer passes through
USB line beam is connect with first diagnostic device, and first diagnostic device is connect with second opinion equipment by harness, and two
The supply lines of person is drawn from the harness.
5. a kind of detection method of vehicle diagnostic equipment according to claim 1 or 4, which is characterized in that described first examines
Disconnected equipment and second opinion equipment all have 4 groups of channels CAN, 1 group of K channel, 1 group of 232 channel and 1 group of 485 channel, described
Default initial channel to be measured and default TCH test channel are 232 channels.
6. a kind of detection method of vehicle diagnostic equipment according to claim 5, which is characterized in that the N is 100.
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| CN201811503097.2A CN109358610B (en) | 2018-12-10 | 2018-12-10 | Detection method of vehicle diagnostic equipment |
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Cited By (3)
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| CN110223415A (en) * | 2019-05-20 | 2019-09-10 | 上海星融汽车科技有限公司 | Diagnostic method and its system based on the identification of vehicle electrically controlling module software information |
| CN112199145A (en) * | 2020-10-10 | 2021-01-08 | 上海星融汽车科技有限公司 | Intelligent diagnosis method, system and diagnosis equipment for vehicle |
| CN114690747A (en) * | 2022-05-31 | 2022-07-01 | 深圳市星卡软件技术开发有限公司 | Method, device, equipment and storage medium for troubleshooting and diagnosing equipment problems |
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