77GHz millimeter wave radar transmit-receive device for automobile collision resistance

Abstract

The invention, which belongs to the radar communication technology field, relates to an automobile anti-collision radar system, especially to a 77GHz millimeter wave radar transmit-receive device for automobile collision resistance. The device particularly comprises an antenna module, a radio frequency module, a signal processing module, a peripheral module and a power supply module. A signal emission synthesizer and a filter amplification and equalization module of the signal processing module are connected with the radio frequency module. A demultiplexer of the radio frequency module is connected with an emission controller of the antenna module; and a multipath mixer of the radio frequency module is connected with a reception controller of the antenna module. And a display and alarming signal module and a digital signal processor module are respectively connected with the peripheral module. The antenna module employs a mode combining a lens and an antenna as well as the system works at a frequency range of a 77GHz millimeter wave, so that the system stability and the sensitivity precision can be reliably ensured. The signal processing module enables accuracy of sampling data to be ensured and a dynamic rang of a signal to be effectively improved. And an integrated module assembly is employed to design the radio frequency module, so that high precision angle measurement and rapid switching of the reception antenna are realized.

Description

technical field [0001] The invention relates to an automobile anti-collision radar system, in particular to a 77GHz millimeter-wave automobile anti-collision radar transceiver, which belongs to the technical field of radar communication. Background technique [0002] The research on automobile active anti-collision control technology has been widely valued and has become the mainstream technology in the research and development of automobile anti-collision system in recent years. Active safety driving auxiliary devices such as the active anti-collision control system of automobiles can significantly reduce the driver's burden and judgment errors, and will play an important role in improving traffic safety, reducing the incidence of vicious traffic accidents, and reducing the loss of life and property. NHTSA's research results show that the anti-collision warning system can reduce rear-end collision accidents by an average of 51%, and traffic accidents caused by changing lane...

AI Technical Summary

Problems solved by technology

However, insufficient information acquisition is a serious problem in the 77GHz radio frequency transmission system. Therefore, there are few reports on the relevant information of the automotive active anti-collision radar system in the 77GHz frequency band at home and abroad.

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