Electromagnetic Compatibility Test System and Method for Equipment with Vehicle Ethernet Function
An electromagnetic compatibility and test system technology, which is applied in transmission systems, testing electrical devices in transportation, measuring electricity, etc., can solve problems such as electromagnetic noise, affecting normal communication of vehicle Ethernet, and achieve accurate testing results
Active Publication Date: 2021-08-24
BEIJING JINGWEI HIRAIN TECH CO INC
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Problems solved by technology
[0004] During the data transmission process of the vehicle Ethernet, electromagnetic noise will be generated externally, and the external electromagnetic interference may also affect the normal communication of the vehicle Ethernet
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[0058] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention.
[0059] There are big differences between the vehicle Ethernet and the traditional vehicle network. For example, the communication rate of the vehicle Ethernet is much higher than that of the traditional vehicle network. The vehicle Ethernet and the traditional vehicle network have different physical layer structures and signal characteristics. Since automotive Ethernet is an emerging technology, and it is quite different from traditional automotive networks, there is currently no mature techni...
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The invention provides an electromagnetic compatibility testing system and method for equipment with a vehicle Ethernet function. The system includes: a load board, a device under test, an electromagnetic compatibility testing device and a monitoring device; in the electromagnetic anti-interference test environment, the load board generates Benchmark data, send the benchmark data to the device under test, the device under test receives the data, and returns the received data to the load board, the load board receives the returned data, and determines the data transmission of the vehicle Ethernet according to the reference data and the returned data State, send the data transmission status to the monitoring device; the device under test obtains its own communication status, determines the communication performance of the vehicle Ethernet through its own communication status, and sends the communication performance to the monitoring device; in the electromagnetic disturbance test environment, electromagnetic compatibility The test equipment measures the electromagnetic disturbance intensity during data transmission between the equipment under test and the load board. The invention can comprehensively and accurately determine the electromagnetic compatibility performance of the vehicle-mounted Ethernet module in the device under test.
Description
technical field [0001] The invention relates to the technical field of electromagnetic compatibility, in particular to an electromagnetic compatibility testing system and method for equipment with a vehicle-mounted Ethernet function. Background technique [0002] The rapid development of automotive electronics has increased the number of electronic products in the car year by year, and the complexity has increased day by day. The trend of car intelligence, networking, and even autonomous driving has come. The application of new technologies makes it difficult for traditional vehicle networks such as Controller Area Network (CAN) and FlexRay to meet the bandwidth requirements of data transmission. [0003] Vehicle Ethernet is a new type of local area network technology that uses Ethernet to connect electronic units in the vehicle. , T-BOX) and other required bandwidth requirements, but also has the potential to support higher performance in the future. [0004] During the d...
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IPC IPC(8): G01R31/00H04L29/08
CPCG01R31/001G01R31/006H04L67/12
Inventor 童心王显赫张浩森
Owner BEIJING JINGWEI HIRAIN TECH CO INC