Radiation anti-interference test monitor system for automotive electronic control unit

Abstract

The invention discloses a radiation anti-interference test monitor system for an automotive electronic control unit. The system comprises a transmitting antenna and an electronic control unit to be detected, which are arranged within an EMC (electro magnetic compatibility) darkroom, and signal imitation equipment, a protocol signal receiving and dispatching module and a control master machine, which are arranged outside the EMC darkroom,. The control master machine controls the protocol signal receiving and dispatching module and the signal imitation equipment to generate protocol input signals and non-protocol input signals required for imitating the working condition of a whole automobile, the protocol input signals and the non-protocol input signals are transmitted to the electronic control unit to be detected through an optical fiber, and an output signal generated by the electronic control unit to be detected is timely monitored, so that the aim of test can be achieved. The signal transmission among the signal imitation equipment, the protocol signal receiving and dispatching module and the electronic control unit to be detected is realized by the optical fiber, so that the influence of the veracity of a test result caused by electromagnetic interference when the signal is transmitted can be avoided; and therefore, a real test result can be obtained.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a radiation anti-interference testing and monitoring system for electronic control units of automobiles. Background technique [0002] With the increasing number of electronic control units on the vehicle, the electromagnetic environment in which the vehicle is located is becoming increasingly complex. On the one hand, the electronic control unit needs to coexist with the radio frequency transmitter. On the other hand, the vehicle may also enter the strong electromagnetic field area generated by some external transmitters, such as the electromagnetic field area with an intensity of tens or even hundreds of volts per meter. Electromagnetic interference from electronic control units including semiconductor logic devices. Therefore, before the vehicle leaves the factory, it needs to do a specific Electro Magnetic Compatibility (EMC) test to ensure that the electronic control un...

AI Technical Summary

Problems solved by technology

On the one hand, the electronic control unit needs to coexist with the radio frequency transmitter. On the other hand, the vehicle may also enter the strong electromagnetic field area generated by some external transmitters, such as an electromagnetic field area with an intensity of tens or even hundreds of volts per meter. Electromagnetic interference generated by electronic control units including semiconductor logic devices

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