Automobile crashproof millimeter wave radar system

Abstract

The invention discloses an automobile crashproof millimeter wave radar system, comprising an antenna unit, a microwave front end and a signal processing unit, wherein the antenna unit is used for transmitting and receiving signals; the microwave front end is used for generating transmission signals, outputting local oscillator signals through a coupler, and obtaining intermediate frequency echo beating signals in a difference mode; an intermediate frequency conditioning circuit performs gain amplification on mixed intermediate frequency signals through an operational amplifier, and then outputs the mixed intermediate frequency signals to the signal processing unit; the signal processing unit is used for generating frequency scanning control signals and frequency scanning source control parameters, performing sampling and spectral analysis on beating signals inputted by the microwave front end, resolving speed, distance, phase and azimuth, performing communication through a CAN cable, and converting voltage. The radar system has a radial and transverse two-dimensional measurement capacity, and determines the existence of a danger object according to a safety criterion so as to reduce traffic accidents.

Description

technical field [0001] The invention belongs to the field of automobile safety control, and in particular relates to an automobile anti-collision millimeter-wave radar. Background technique [0002] With the continuous development of economy and technology, the construction of high-grade highways, the automobile industry has developed rapidly since its birth in the late nineteenth century, and the types and quantities have also increased exponentially. Causing frequent collision accidents, traffic safety issues have become the main problem to be solved urgently in the world. Automobile anti-collision radar can monitor the road environment in real time, assist the driver to make correct handling in emergency situations, and effectively prevent traffic accidents. [0003] International research on automobile collision avoidance radar began in the 1960s, and has achieved a lot of results so far, mainly concentrated in developed countries such as Europe, the United States, and ...

AI Technical Summary

Problems solved by technology

[0004] In the process of multi-target recognition in the prior art, the amount of calculation of signal processing is large, the calculation cycle is long, and it is difficult to meet the requirements of real-time measurement

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