CN117560310A - Vehicle-mounted network CAN consistency testing device and method - Google Patents
Vehicle-mounted network CAN consistency testing device and method Download PDFInfo
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- CN117560310A CN117560310A CN202311686346.7A CN202311686346A CN117560310A CN 117560310 A CN117560310 A CN 117560310A CN 202311686346 A CN202311686346 A CN 202311686346A CN 117560310 A CN117560310 A CN 117560310A
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- 238000004088 simulation Methods 0.000 claims abstract description 26
- 238000001514 detection method Methods 0.000 claims abstract description 21
- 238000003745 diagnosis Methods 0.000 claims description 16
- 238000004422 calculation algorithm Methods 0.000 claims description 7
- 230000004044 response Effects 0.000 claims description 7
- 238000010998 test method Methods 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 2
- 230000006870 function Effects 0.000 description 26
- 238000004891 communication Methods 0.000 description 14
- 101000685724 Homo sapiens Protein S100-A4 Proteins 0.000 description 9
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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
- H04L12/40169—Flexible bus arrangements
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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
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
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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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- 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
- H04L2012/40267—Bus for use in transportation systems
- H04L2012/40273—Bus for use in transportation systems the transportation system being a vehicle
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Abstract
The invention provides a vehicle-mounted network CAN consistency testing device and method, comprising the following steps: the test terminal is used for providing a vehicle-mounted network CAN consistency test item; the consistency test comprises a physical layer consistency test, a link layer consistency test and an application layer consistency test; the CAN bus simulation equipment is connected with the test terminal and the vehicle-mounted equipment and is used for carrying out CAN bus, ethernet and J1939 protocol simulation on the vehicle-mounted equipment; the CAN bus interference equipment is connected with the test terminal and the vehicle-mounted equipment and is used for carrying out interference test on the vehicle-mounted equipment; the vehicle-mounted Ethernet test equipment is connected with the test terminal and the equipment and is used for carrying out Ethernet test on the vehicle-mounted equipment; the analog quantity detection equipment is connected with the vehicle-mounted Ethernet test equipment and is used for acquiring analog quantity information of the tested bus. The vehicle-mounted network CAN consistency testing device and the vehicle-mounted network CAN consistency testing method CAN realize automatic testing of the vehicle-mounted network CAN consistency, and greatly improve testing efficiency and testing precision.
Description
Technical Field
The invention relates to the technical field of vehicle-mounted networks, in particular to a vehicle-mounted network CAN consistency testing device and method.
Background
The CAN consistency test mainly comprises three main test contents of a physical layer, a link layer and an application layer, and relates to ISO11898, ISO16845, ISO15765 and ISO14229 consistency test standards respectively. Wherein the physical layer test covers the physical characteristics of the amplitude, edge time and the like of the output voltage of the CAN communication medium. Link layer testing encompasses sampling points, data Length Codes (DLC), expected frame reception, high load communications, etc. to ensure that the frame structure of the node and communication parameters remain consistent. The application layer test covers tests in terms of UDS diagnostic response service, security algorithm access logic, network management functions and fault diagnosis to ensure reliability of network communications.
In whole vehicle network debugging, each node follows CAN consistency test and is an important precondition for ensuring stable operation of a bus. The current CAN consistency test is already a necessary trend in the automotive industry. In the traditional CAN consistency test method, a common mode for testing test items including network management by an application layer is to manually control the hard-wire state of an ignition key switch or configure a specific simulation message to wake up or enter the conversion of each network operation mode, and the judgment is carried out by manually checking and checking CAN network management data and expected results. The application layer can not simulate the front conditions of specific signal loss, invalid signal value, invalid boundary time, open circuit and short circuit of the signal line of the specific sensor and the like of the whole vehicle, so that the application layer can not perform the tests of message loss, counter or check and fault and the like. The common mode of data link layer test such as message length, message ID and undefined bit test item is manual check, which is difficult to solve the problem of manual false detection caused by large CAN data volume. The common mode of physical layer test such as CAN dominant recessive output voltage, waveform integrity and other test items is manual check and check, which is time-consuming and labor-consuming.
In addition, a large number of test cases, especially application layer tests, are covered in the CAN consistency test. Because of the multiple electronic control units (Electronic Control Unit, ECU) of the whole vehicle, the CAN message signal communication loss fault of a single ECU exceeds 20 items; CAN semaphore counters or checksum failures CAN involve more, typically over 50 entries. Meanwhile, the network management function in the application layer test involves switching of multiple states such as a bus sleep mode, a message repetition state, a ready sleep state and the like, and the number of test cases involved is up to 60. Aiming at the faults, because the specific signal loss of the whole vehicle cannot be simulated, the signal value is invalid, and the invalid boundary time is required to be manually and independently configured to send CANoe IG module simulation, the manual judgment and check workload is huge.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present invention aims to provide a vehicle-mounted network CAN consistency testing device and method, which CAN realize automatic testing of vehicle-mounted network CAN consistency, and greatly improve testing efficiency and testing precision.
In order to overcome the above-mentioned drawbacks, the present invention provides a vehicle network CAN consistency test apparatus, including: the test terminal is used for providing a vehicle-mounted network CAN consistency test item; the consistency test comprises a physical layer consistency test, a link layer consistency test and an application layer consistency test; the CAN bus simulation equipment is connected with the test terminal and the vehicle-mounted equipment and is used for carrying out CAN bus, ethernet and J1939 protocol simulation on the vehicle-mounted equipment; the CAN bus interference equipment is connected with the test terminal and the vehicle-mounted equipment and is used for carrying out interference test on the vehicle-mounted equipment; the vehicle-mounted Ethernet test equipment is connected with the test terminal and the vehicle-mounted equipment and is used for carrying out Ethernet test on the vehicle-mounted equipment; and the analog quantity detection equipment is connected with the vehicle-mounted Ethernet test equipment and is used for acquiring analog quantity information of the tested bus.
In an embodiment of the invention, the vehicle-mounted device further comprises a programmable power supply and a first serial port relay, wherein the programmable power supply is used for providing power for the vehicle-mounted device through the first serial port relay under the control of the test terminal.
In an embodiment of the present invention, the first serial port relay is further configured to perform on-off control on a constant power, an ignition key switch, and a ground wire of the battery of the vehicle-mounted device.
In an embodiment of the present invention, the vehicle-mounted device further includes a second serial port relay connected to the vehicle-mounted device and the external sensor, for implementing on-off control of the external sensor and the vehicle-mounted device.
In an embodiment of the present invention, the test terminal is connected to the CAN bus emulation device, the CAN bus interference device, and the vehicle ethernet test device through a USB interface.
In an embodiment of the present invention, the CAN bus emulation device and the CAN bus interference device are connected to the vehicle device through a CAN interface.
In an embodiment of the present invention, the on-board ethernet testing device is connected to the on-board device and the analog detection device through an ethernet interface.
In an embodiment of the present invention, the analog quantity detection device includes a digital multimeter, an oscilloscope, an electronic load instrument, and a signal generator interferometer.
In an embodiment of the present invention, the test terminal is further configured to provide a test entry of the vehicle-mounted ethernet TC8, so as to implement the vehicle-mounted ethernet TC8 test.
In an embodiment of the present invention, the application layer consistency test includes fault diagnosis, network management function, UDS diagnosis response service, security algorithm access logic, and whole vehicle offline electric inspection flow.
In addition, the invention provides a vehicle-mounted network CAN consistency test method, and the vehicle-mounted network CAN consistency test device is adopted to realize vehicle-mounted network CAN consistency test.
In an embodiment of the present invention, the method for testing CAN consistency of the vehicle network includes one or more of the following steps:
based on CAN bus simulation equipment, carrying out CAN bus, ethernet and J1939 protocol simulation on the vehicle-mounted equipment;
performing interference test on the vehicle-mounted equipment based on the CAN bus interference equipment;
carrying out Ethernet test on the vehicle-mounted equipment based on the vehicle-mounted Ethernet test equipment;
analog quantity information of a tested bus is obtained based on analog quantity detection equipment.
As described above, the vehicle-mounted network CAN consistency testing device and method of the invention have the following beneficial effects:
(1) The consistency test of the CAN physical layer, the link layer and the application layer is satisfied, so that the problems that the traditional manual test cannot simulate the specific signal of the whole vehicle CAN be solved, and the test efficiency and the test precision are greatly improved;
(2) Problems in consistency tests of all layers of the CAN network CAN be found, and problems in detection and maintenance of subsequent vehicles and detection and maintenance of final assembly inspection line stations are avoided;
(3) The vehicle-mounted Ethernet test function is reserved, design engineering and test scripts CAN be developed according to requirements, the consistency test function of the Ethernet TC8 is met, and the problem that the test device in the industry cannot be compatible with CAN and the universality of consistency tests of all layers of the vehicle-mounted Ethernet is solved.
Drawings
FIG. 1 is a schematic diagram of a frame structure of an on-board network CAN consistency test device according to an embodiment of the invention;
fig. 2 is a schematic structural diagram of an on-board network CAN consistency testing device according to an embodiment of the invention.
Detailed Description
Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present invention, which is described by the following specific examples.
It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the invention to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the invention, are not intended to be critical to the essential characteristics of the invention, but are intended to fall within the spirit and scope of the invention. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the invention, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the invention may be practiced.
The vehicle-mounted network CAN consistency testing device and the method CAN automatically realize physical layer consistency testing, link layer consistency testing and application layer consistency testing of the vehicle-mounted network, reserve vehicle-mounted Ethernet testing functions, develop design engineering and testing scripts according to requirements, meet the function of Ethernet TC8 consistency testing, solve the problem that the testing device in the industry cannot be compatible with the universality of the CAN and all layer consistency testing of the vehicle-mounted Ethernet, and realize quick and efficient testing, thereby having great practicability.
As shown in fig. 1 and fig. 2, in an embodiment, the vehicle network CAN consistency testing apparatus of the present invention includes a testing terminal 1, a CAN bus simulation device 2, a CAN bus interference device 3, a vehicle ethernet testing device 4, and an analog quantity detecting device 5. The test terminal 1 is connected with the CAN bus simulation device 2, the CAN bus interference device 3 and the vehicle-mounted Ethernet test device 4 through USB interfaces. The CAN bus simulation device 2 and the CAN bus interference device 3 are connected with the vehicle-mounted device 6 through a CAN interface. The vehicle-mounted Ethernet test device 4 is connected with the vehicle-mounted device 6 and the analog quantity detection device 5 through an Ethernet interface. Preferably, the in-vehicle apparatus is an in-vehicle electronic control unit (Electronic Control Unit, ECU).
The test terminal 1 is used for providing a vehicle-mounted network CAN consistency test item; the consistency test comprises a physical layer consistency test, a link layer consistency test and an application layer consistency test. In an embodiment, the test terminal 1 adopts a computer host, is equipped with a CANoe upper computer software, and generates all CAN consistency test codes based on the CAPL language according to the test items. The vehicle-mounted network CAN consistency test bar code comprises CAN output voltage test, terminal resistance, output implicit level, message DLC, waveform edge time, expected frame receiving, high-load communication, voltage communication range, sampling point, CAN-to-power short circuit, busof recovery strategy, UDS diagnosis response service, safety algorithm access logic, network management, fault diagnosis and the like. In addition, the test terminal 1 is further configured to provide an on-board ethernet TC8 test entry, such as a TCP/UDP protocol test, an IP protocol test, an ARP protocol test, an ICMP protocol test, etc., so as to implement the on-board ethernet TC8 test.
The CAN bus simulation device 2 is connected with the test terminal 1 and the vehicle-mounted device 6 and is used for carrying out CAN bus, ethernet and J1939 protocol simulation on the vehicle-mounted device 6. In an embodiment, the CAN bus simulation device 2 CAN configure CANoe option. CAN, option. Ethernet, option. Diva, option. J1939 on software to implement simulation of CAN bus, ethernet, J1939 protocol.
The CAN bus interference device 3 is connected with the test terminal 1 and the vehicle-mounted device 6 and is used for carrying out interference test on the vehicle-mounted device. In an embodiment, the CAN bus interference device 3 CAN provide support for network interference, and CAN complete interference tests such as bus busoff, CAN bus short circuit, open circuit, etc.
The vehicle-mounted Ethernet test device 4 is connected with the test terminal 1 and the vehicle-mounted device 6 and is used for carrying out Ethernet test on the vehicle-mounted device. In one embodiment, the in-vehicle ethernet test device 4 is capable of providing physical component support for ethernet.
The analog quantity detection device 5 is connected with the vehicle-mounted Ethernet test device 4 and is used for acquiring analog quantity information of the tested bus. In one embodiment of the present invention, the analog quantity detecting device 5 includes a digital multimeter, an oscilloscope, an electronic load instrument, a signal generator interferometer, and the like. The analog quantity detection equipment 5 remotely controls all the equipment in an Ethernet interface mode, and collects analog quantity waveforms, waveform rising and falling edge time, read resistance values and the like of the tested bus. Meanwhile, after the physical characteristics of the network bus of the tested node are received, the analog waveform data are analyzed by adopting the corresponding functions, and whether the analog waveform data meet the specification requirements or not is compared. Preferably, the analog quantity detection device 5 and the on-board ethernet test device 4 complete information interaction through a switch.
In an embodiment of the present invention, the vehicle network CAN consistency testing device of the present invention further includes a programmable power supply 7 and a first serial port relay 8, where the programmable power supply 7 is configured to provide power for the vehicle device 6 through the first serial port relay 8 under the control of the testing terminal 1. The first serial port relay 8 adopts a 32-path serial port relay and is used for carrying out on-off control on normal electricity of a K30 storage battery of the whole vehicle, a K15 ignition key switch and a K31 ground wire. Meanwhile, the open circuit, the ground and the short circuit of the power supply of the sensor can be controlled through the state configuration of the first serial port relay 8, so that the purpose of injecting the corresponding sensor faults is achieved. The programmable power supply 7 can automatically adjust the power supply voltage of the vehicle-mounted equipment, so that the precondition of the voltage communication range test is met.
In an embodiment of the present invention, the vehicle network CAN consistency testing device of the present invention further includes a second serial port relay 9, connected to the vehicle device 6 and an external sensor, for implementing on-off control of the external sensor 9 and the vehicle device 6. By controlling the time of the open circuit or the short circuit of the second serial port relay 9, the fault code value can be automatically read so as to realize the fault test of each external sensor.
In an embodiment, the vehicle-mounted network CAN consistency test method adopts the vehicle-mounted network CAN consistency test device to realize vehicle-mounted network CAN consistency test. The structure and principle of the vehicle network CAN consistency testing device are as described above, and are not described herein.
Providing a vehicle-mounted network CAN consistency test item based on a test terminal when the vehicle-mounted network CAN consistency test is carried out; the consistency test comprises a physical layer consistency test, a link layer consistency test and an application layer consistency test. And the test terminal realizes physical layer consistency test, link layer consistency test and application layer consistency test through the CAN bus simulation equipment, the CAN bus interference equipment and the vehicle-mounted Ethernet test equipment according to the test items on the test terminal.
Specifically, the vehicle network CAN consistency test method comprises one or more of the following steps:
1) And simulating the CAN bus, the Ethernet and the J1939 protocol of the vehicle-mounted equipment based on the CAN bus simulation equipment.
2) And performing interference test on the vehicle-mounted equipment based on the CAN bus interference equipment.
3) And carrying out Ethernet test on the vehicle-mounted equipment based on the vehicle-mounted Ethernet test equipment.
4) Analog quantity information of a tested bus is obtained based on analog quantity detection equipment.
It should be noted that the execution sequence of the above steps is not limited, but the corresponding test steps are selected according to the actual test requirements.
The characteristics of the physical layer conformance test, the link layer conformance test, and the application layer conformance test are described below, respectively.
(1) Application layer conformance test
The application layer test supports functions such as fault diagnosis, network management function, UDS diagnosis response service, security algorithm access logic, whole car off-line electric detection flow and the like. Providing physical component support for CAN and Ethernet through hardware, and providing support for network interference; and the CANoe Option.Can, option.Ethernet, option.diva and Option.J1939 are configured on software to realize the simulation of Can bus, ethernet and J1939 protocols. Meanwhile, in the test case, aiming at the test of signal faults, the CAPL language is used for packaging signal node loss, signal check value errors and signal invalid function interfaces, so that the triggering of the specified signal faults of the whole vehicle is realized and a simulation message is sent.
In order to meet the functions of UDS diagnosis response service, security algorithm access logic, network management function, fault diagnosis and the like, the CAPL language is used for realizing the upper computer test module assembly based on each application layer protocol in a self-programming mode. The network management function tests the upper and lower power dormancy awakening logic, a 32-way serial port relay is used on hardware, and a serial port relay control function is packaged through a CAPL language custom function on software, so that on-off control of normal power of a K30 storage battery, a K15 ignition key switch and a K31 ground wire of the whole vehicle is realized. The functions of sending the diagnosis request are packaged aiming at the diagnosis response service, the safety algorithm access logic and the test of the whole vehicle off-line electric inspection flow, and whether the corresponding diagnosis service and the diagnosis data meet the requirements or not is automatically judged by triggering the corresponding functions.
The user definition in CAPL language sends network management wake-up message in the mode of periodical event, and receives the network management message to automatically judge whether the format and time parameters of each state meet the specification requirements. Fault diagnosis tests on a trigger time mechanism and a recovery time mechanism of open circuit, short circuit to ground and short circuit of a power supply of a sensor signal line, and by using the time for controlling the open circuit or the short circuit of a 32-path serial port relay, fault code values can be automatically read, so that the fault of each sensor can be tested.
For the test of specific signal loss, invalid signal value and invalid boundary time of the whole car, the user in the CAPL language sends each simulation message in a periodical event mode, and the timer triggers to continuously lose several frames of messages or constructs continuous invalid times of signal value so as to realize the test of each signal loss, invalid signal value triggering and recovery mechanism.
(2) Link layer consistency test
For testing of sampling points, message DLC, expected frame receiving, high-load communication, KL15 power-on/power-off, voltage communication range and the like, the CAPL language is used for realizing an upper computer testing module component based on a link layer protocol in a self-programming mode. Meanwhile, an extended frame transmission function interface, a remote frame transmission function interface and a high-priority high-load message transmission function interface are provided, so that any type of CAN frame CAN be transmitted. The method comprises the steps of testing a voltage communication range, using a programmable power supply on hardware, accessing and controlling the power supply voltage of the vehicle-mounted equipment in a serial port mode through a CAPL language custom function on software, setting an adjustable range of 0V to 30V according to automobile industry specifications, and setting the step length to be 0.1V, thereby realizing the test when the voltage of the vehicle-mounted equipment drops to a communication closing voltage or rises to a communication opening voltage under a reference voltage.
(3) Physical layer consistency test
The method comprises the steps of testing physical characteristics such as amplitude, edge time and the like of the output voltage of the CAN communication medium. The hardware uses digital multimeter, oscilloscope, electronic load instrument, etc., the software uses CAPL language custom function to access control in Ethernet mode, captures CAN waveform, reads resistance value and configures load size. Meanwhile, after the physical characteristics of the network bus of the tested node are received, the corresponding functions are adopted to analyze and compare whether the physical characteristics meet the standard requirements, such as the obvious hidden level, the waveform rising edge time, the maximum and minimum resistance load parameters and the like, so that the consistency of the physical layer is tested.
In summary, the vehicle-mounted network CAN consistency test device and method provided by the invention CAN meet the CAN physical layer, link layer and application layer consistency test, thereby solving the problems that the traditional manual test cannot simulate the specific signal of the whole vehicle, and greatly improving the test efficiency and the test precision; problems in consistency tests of all layers of the CAN network CAN be found, and problems in detection and maintenance of subsequent vehicles and detection and maintenance of final assembly inspection line stations are avoided; the vehicle-mounted Ethernet test function is reserved, design engineering and test scripts CAN be developed according to requirements, the consistency test function of the Ethernet TC8 is met, and the problem that the test device in the industry cannot be compatible with CAN and the universality of consistency tests of all layers of the vehicle-mounted Ethernet is solved. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (12)
1. The vehicle-mounted network CAN consistency testing device is characterized by comprising:
the test terminal is used for providing a vehicle-mounted network CAN consistency test item; the consistency test comprises a physical layer consistency test, a link layer consistency test and an application layer consistency test;
the CAN bus simulation equipment is connected with the test terminal and the vehicle-mounted equipment and is used for carrying out CAN bus, ethernet and J1939 protocol simulation on the vehicle-mounted equipment;
the CAN bus interference equipment is connected with the test terminal and the vehicle-mounted equipment and is used for carrying out interference test on the vehicle-mounted equipment;
the vehicle-mounted Ethernet test equipment is connected with the test terminal and the vehicle-mounted equipment and is used for carrying out Ethernet test on the vehicle-mounted equipment;
and the analog quantity detection equipment is connected with the vehicle-mounted Ethernet test equipment and is used for acquiring analog quantity information of the tested bus.
2. The in-vehicle network CAN consistency test apparatus of claim 1, wherein: the vehicle-mounted equipment testing device further comprises a programmable power supply and a first serial port relay, wherein the programmable power supply is used for providing power for the vehicle-mounted equipment through the first serial port relay under the control of the testing terminal.
3. The in-vehicle network CAN consistency test apparatus of claim 2, wherein: the first serial port relay is also used for controlling on-off of the constant electricity, the ignition key switch and the ground wire of the storage battery of the vehicle-mounted equipment.
4. The in-vehicle network CAN consistency test apparatus of claim 1, wherein: the vehicle-mounted device further comprises a second serial port relay which is connected with the vehicle-mounted device and the external sensor and used for realizing on-off control of the external sensor and the vehicle-mounted device.
5. The in-vehicle network CAN consistency test apparatus of claim 1, wherein: the test terminal is connected with the CAN bus simulation equipment, the CAN bus interference equipment and the vehicle-mounted Ethernet test equipment through a USB interface.
6. The in-vehicle network CAN consistency test apparatus of claim 1, wherein: the CAN bus simulation equipment and the CAN bus interference equipment are connected with the vehicle-mounted equipment through a CAN interface.
7. The in-vehicle network CAN consistency test apparatus of claim 1, wherein: the vehicle-mounted Ethernet test equipment is connected with the vehicle-mounted equipment and the analog quantity detection equipment through an Ethernet interface.
8. The in-vehicle network CAN consistency test apparatus of claim 1, wherein: the analog quantity detection equipment comprises a digital multimeter, an oscilloscope, an electronic load instrument and a signal generator interferometer.
9. The in-vehicle network CAN consistency test apparatus of claim 1, wherein: the test terminal is also used for providing test items of the vehicle-mounted Ethernet TC8 so as to realize the test of the vehicle-mounted Ethernet TC 8.
10. The in-vehicle network CAN consistency test apparatus of claim 1, wherein: the application layer consistency test comprises fault diagnosis, network management function, UDS diagnosis response service, security algorithm access logic and whole car off-line electric detection flow.
11. A vehicle network CAN consistency test method is characterized in that: an on-board network CAN consistency test is implemented by using the on-board network CAN consistency test device according to one of claims 1-10.
12. The vehicle network CAN consistency test method of claim 11, wherein: the vehicle-mounted network CAN consistency test method comprises one or more of the following steps:
based on CAN bus simulation equipment, carrying out CAN bus, ethernet and J1939 protocol simulation on the vehicle-mounted equipment;
performing interference test on the vehicle-mounted equipment based on the CAN bus interference equipment;
carrying out Ethernet test on the vehicle-mounted equipment based on the vehicle-mounted Ethernet test equipment;
analog quantity information of a tested bus is obtained based on analog quantity detection equipment.
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| CN202311686346.7A CN117560310A (en) | 2023-12-07 | 2023-12-07 | Vehicle-mounted network CAN consistency testing device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117930822A (en) * | 2024-03-21 | 2024-04-26 | 常州星宇车灯股份有限公司 | Automatic test system and test method for automobile ECU |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117930822A (en) * | 2024-03-21 | 2024-04-26 | 常州星宇车灯股份有限公司 | Automatic test system and test method for automobile ECU |
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