CN113992552A - Automobile CAN/CANFD physical layer system testing device and method - Google Patents
Automobile CAN/CANFD physical layer system testing device and method Download PDFInfo
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- CN113992552A CN113992552A CN202111227398.9A CN202111227398A CN113992552A CN 113992552 A CN113992552 A CN 113992552A CN 202111227398 A CN202111227398 A CN 202111227398A CN 113992552 A CN113992552 A CN 113992552A
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- 238000012360 testing method Methods 0.000 title claims abstract description 152
- 238000000034 method Methods 0.000 title claims description 8
- 238000005070 sampling Methods 0.000 claims abstract description 78
- 238000004891 communication Methods 0.000 claims abstract description 12
- 230000010354 integration Effects 0.000 claims abstract description 5
- 238000011084 recovery Methods 0.000 claims description 38
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/50—Testing arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40215—Controller Area Network CAN
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Abstract
The invention relates to the technical field of automobile bus communication, and provides an automobile CAN/CANFD physical layer system testing device, which comprises: the test unit of integration on CANOE software, the test unit passes through CAN/CANFD and is connected with electrical apparatus module ECU communication, and wherein the test unit carries out the sampling rate test, includes: the sampling rate testing unit is used for periodically sending messages with set length to the arbitration field ID; the recording unit is used for periodically sampling at the arbitration field ID, recording a sampling position and sending the sampling position to the electrical appliance module ECU; and the electrical module ECU acquires the maximum value C1 of the sampling positions, the minimum value C2 of the sampling positions and the average value C3 of the sampling positions in the test period. The sampling rate and the fast and slow reset time values of the CAN/CANFD physical layer of each electrical module ECU are automatically tested on the rack, so that the automatic test of the automobile CAN/CANFD physical layer system is realized, the test efficiency is greatly improved, the test scene CAN be changed by changing parameters, and the test scene is flexibly changed.
Description
Technical Field
The invention relates to the technical field of automobile bus communication, and provides an automobile CAN/CANFD physical layer system testing device and method.
Background
Along with the appearance of intelligent automobiles, the requirements of customers on intelligent services of the automobiles are higher and higher, the integration of the ECU modules of the electrical modules is higher and higher, the test requirements of the CAN/CANFD physical layers of the ECUs of the electrical modules are higher and higher, and the problems of limited test scenes and low test efficiency exist in the traditional manual bench test.
Disclosure of Invention
The invention provides a device for testing an automobile CAN/CANFD physical layer system, aiming at improving the problems.
The invention is realized in this way, a kind of car CAN/CANFD physical layer system testing device, the said device includes:
the test unit of integration on CANOE software, the test unit passes through CAN/CANFD and is connected with electrical apparatus module ECU communication, and wherein the test unit carries out the sampling rate test, includes:
a sampling rate testing unit and a recording unit, wherein the recording unit is connected with the electrical appliance module ECU in a communication way,
the sampling rate testing unit is used for periodically sending messages with set length to the arbitration field ID;
the recording unit is used for periodically sampling at the arbitration field ID, recording a sampling position and sending the sampling position to the electrical appliance module ECU;
and the electrical module ECU acquires the maximum value C1 of the sampling positions, the minimum value C2 of the sampling positions and the average value C3 of the sampling positions in the test period.
Further, the test unit performs a BUSOFF recovery time test, and the test unit further includes:
the BUSOFF recovery time testing unit is in communication connection with the electrical module ECU;
and the BUSOFF recovery time testing unit sends an interference signal to the interference arbitration field ID within a set time length, and the electrical module ECU feeds back the BUSOFF recovery time.
Further, the BUSOFF recovery time test unit includes:
and the interference arbitration field setting module is used for setting the number and the address of the interference arbitration field IDs in the BUSOFF recovery time test unit.
Further, the apparatus further comprises:
and the test frequency setting unit is used for setting the test frequency of each CAN/CANFD physical layer system, and each test comprises a sampling rate test and a BUSOFF recovery test.
Further, the apparatus further comprises:
the display unit is used for outputting test data of the sampling rate test and the BUSOFF recovery test in each test period by the electrical module ECU after the test times reach the set test times;
further, the apparatus further comprises:
and the time interval setting unit is used for setting the time interval between the sampling rate test and the BUSOFF recovery test in each test period.
The invention is realized in this way, a method for testing an automobile CAN/CANFD physical layer system, which comprises the following steps:
and (3) testing the sampling rate: periodically sending messages with set length to the arbitration field ID, periodically sampling at the arbitration field ID, recording sampling positions, and sending the sampling positions to an electrical appliance module ECU; the electrical appliance module ECU acquires the maximum value C1, the minimum value C2 and the average value C3 of the sampling positions in the test period;
BUSOFF recovery time test: and sending an interference signal to the interference arbitration field ID within a set time length, and feeding back BUSOFF recovery time by the electric appliance module ECU.
According to the invention, the sampling rate and the fast and slow reset time values of the CAN/CANFD physical layer of each electrical module ECU are automatically tested on the rack, so that the automatic test of the automobile CAN/CANFD physical layer system is realized, the test efficiency is greatly improved, meanwhile, the test scene CAN be changed by changing parameters, and in addition, the test data is automatically output, so that an engineer CAN conveniently carry out design analysis based on the sampling data.
Drawings
Fig. 1 is a schematic structural diagram of an automotive CAN/CANFD physical layer system testing apparatus according to an embodiment of the present invention.
Detailed Description
The following description of preferred embodiments of the invention will be made in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of an automotive CAN/CAN fd physical layer system testing apparatus provided in an embodiment of the present invention, and for convenience of description, only a part related to the embodiment of the present invention is shown, where the apparatus includes:
the test unit of integration on CANOE software, the test unit passes through CAN/CANFD and is connected with electrical apparatus module ECU communication, and wherein the test unit carries out the sampling rate test, includes:
sampling rate test unit and record unit, record unit and electrical apparatus module ECU communication are connected, wherein:
the sampling rate testing unit is used for periodically sending messages with set length to the arbitration field ID, the recording unit is used for periodically sampling at the arbitration field ID, recording sampling positions and sending the sampling positions to the electrical appliance module ECU;
the electrical module ECU acquires the maximum value C1, the minimum value C2, and the average value C3 of the sampling positions in the test period.
In the embodiment of the present invention, the test unit performs a BUSOFF recovery time test, and the test unit further includes:
the BUSOFF recovery time testing unit is in communication connection with the electrical module ECU;
and the BUSOFF recovery time testing unit sends an interference signal to the interference arbitration field ID within a set time length, and the electrical module ECU feeds back the BUSOFF recovery time.
In an embodiment of the present invention, the BUSOFF recovery time test unit includes:
and the interference arbitration field setting module is used for setting the number and the address of the interference arbitration field IDs in the BUSOFF recovery time test unit.
In the embodiment of the invention, each CAN/CANFD physical layer system needs to perform sampling rate test and BUSOFF recovery test, the two tests have no obvious sequence, the sampling rate test CAN be performed first and then the BUSOFF recovery test CAN be performed, or the BUSOFF recovery test CAN be performed first and then the sampling rate test CAN be performed, but after the last test is finished, the control program needs to wait for a set time length and then perform the next test.
In an embodiment of the present invention, the apparatus further includes:
and the test frequency setting unit is used for setting the test frequency (for example, 4 times) of each CAN/CANFD physical layer system, and each test comprises a sampling rate test and a BUSOFF recovery test.
In an embodiment of the present invention, the apparatus further includes:
the display unit is used for outputting test data of the sampling rate test and the BUSOFF recovery test in each test period by the electrical module ECU after the test times reach the set test times;
the test data for the sample rate test includes: the maximum value of the positions C1, the minimum value of the sampling positions C2 and the average value of the sampling positions C3; test data for the BUSOFF resume test include: time of BUSOFF resume.
In an embodiment of the present invention, the apparatus further includes:
and a time interval setting unit for setting a time interval (e.g. 2s) between the sampling rate test and the BUSOFF recovery test in each test period.
The method for testing the automobile CAN/CANFD physical layer system provided by the embodiment of the invention comprises the following steps:
and (3) testing the sampling rate: periodically sending messages with set length to the arbitration field ID, periodically sampling at the arbitration field ID, recording sampling positions, and sending the sampling positions to an electrical appliance module ECU; the electrical appliance module ECU acquires the maximum value C1, the minimum value C2 and the average value C3 of the sampling positions in the test period;
BUSOFF recovery time test: and sending an interference signal to the interference arbitration field ID within a set time length, and feeding back BUSOFF recovery time by the electric appliance module ECU.
In the embodiment of the present invention, a test period in a sampling rate test is 4s, a message sending period is 1ms, a byte length of a message is 8 bytes, a sampling period is 16ms, the sampling period is an integer multiple of the message sending period, and the sampling period is much longer than the message sending period, assuming that an arbitration field ID value is 100, the whole sampling rate test process is specifically as follows:
sending a message with the length of 8 bytes to an arbitration field ID (100) every 1ms, sampling at the arbitration field ID every 16ms, recording a sampling position, sending the sampling position to an electrical appliance module ECU, and running the whole test for 4s, wherein the electrical appliance module ECU acquires the maximum value C1 of the sampling position, the minimum value C2 of the sampling position and the average value C3 of the sampling position in the test period;
in the embodiment of the invention, in the BUSOFF recovery time test, the number of the ID of the interference arbitration field is 3, and the ID values are respectively as follows: ID 1-430, ID 2-410, ID 3-420; and sending a jamming signal to the jamming arbitration field ID for 4s, and feeding back the BUSOFF recovery time by the electric appliance module ECU.
According to the invention, the sampling rate and the fast and slow reset time values of the CAN/CANFD physical layer of each electrical module ECU are automatically tested on the rack, so that the automatic test of the automobile CAN/CANFD physical layer system is realized, the test efficiency is greatly improved, meanwhile, the test scene CAN be changed by changing parameters, and the change of the test scene is flexible; in addition, test data are automatically output, and engineers can conveniently carry out design analysis based on the sampling data.
It is clear that the specific implementation of the invention is not restricted to the above-described embodiments, but that various insubstantial modifications of the inventive process concept and technical solutions are within the scope of protection of the invention.
Claims (7)
1. An automotive CAN/CAN FD physical layer system testing device, the device comprising:
the test unit of integration on CANOE software, the test unit passes through CAN/CANFD and is connected with electrical apparatus module ECU communication, and wherein the test unit carries out the sampling rate test, includes:
a sampling rate testing unit and a recording unit, wherein the recording unit is connected with the electrical appliance module ECU in a communication way,
the sampling rate testing unit is used for periodically sending messages with set length to the arbitration field ID;
the recording unit is used for periodically sampling at the arbitration field ID, recording a sampling position and sending the sampling position to the electrical appliance module ECU;
and the electrical module ECU acquires the maximum value C1 of the sampling positions, the minimum value C2 of the sampling positions and the average value C3 of the sampling positions in the test period.
2. The CAN/CANFD physical layer system testing apparatus of claim 1, wherein said testing unit performs a BUSOFF recovery time test, said testing unit further comprising:
the BUSOFF recovery time testing unit is in communication connection with the electrical module ECU;
and the BUSOFF recovery time testing unit sends an interference signal to the interference arbitration field ID within a set time length, and the electrical module ECU feeds back the BUSOFF recovery time.
3. The CAN/CANFD physical layer system testing apparatus of claim 2, wherein the BUSOFF recovery time testing unit comprises:
and the interference arbitration field setting module is used for setting the number and the address of the interference arbitration field IDs in the BUSOFF recovery time test unit.
4. The automotive CAN/CANFD physical layer system testing apparatus of claim 1 or 2, further comprising:
and the test frequency setting unit is used for setting the test frequency of each CAN/CANFD physical layer system, and each test comprises a sampling rate test and a BUSOFF recovery test.
5. The automotive CAN/CANFD physical layer system testing apparatus of claim 1 or 2, further comprising:
and the display unit outputs the test data of the sampling rate test and the BUSOFF recovery test in each test period by the electrical module ECU after the test frequency reaches the set test frequency.
6. The automotive CAN/CANFD physical layer system testing apparatus of claim 1 or 2, further comprising:
and the time interval setting unit is used for setting the time interval between the sampling rate test and the BUSOFF recovery test in each test period.
7. A method for testing an automobile CAN/CANFD physical layer system is characterized by comprising the following steps:
and (3) testing the sampling rate: periodically sending messages with set length to the arbitration field ID, periodically sampling at the arbitration field ID, recording sampling positions, and sending the sampling positions to an electrical appliance module ECU; the electrical appliance module ECU acquires the maximum value C1, the minimum value C2 and the average value C3 of the sampling positions in the test period;
BUSOFF recovery time test: and sending an interference signal to the interference arbitration field ID within a set time length, and feeding back BUSOFF recovery time by the electric appliance module ECU.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| ES2953585A1 (en) * | 2022-03-30 | 2023-11-14 | Seat Sa | TEST BENCH AND METHOD FOR VEHICLES WITH ELECTRIC MOTOR (Machine-translation by Google Translate, not legally binding) |
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Effective date of registration: 20240415 Address after: 241000 No. 8, Changchun Road, Wuhu economic and Technological Development Zone, Anhui, China Applicant after: CHERY AUTOMOBILE Co.,Ltd. Country or region after: China Address before: 241000 Building 8, science and Technology Industrial Park, 717 Zhongshan South Road, Yijiang District, Wuhu City, Anhui Province Applicant before: Chery Commercial Vehicles (Anhui) Co., Ltd. Country or region before: China |