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Anti-collision system for car door opening based on millimeter-wave radar

A millimeter-wave radar and anti-collision system technology, applied in vehicle components, circuits or fluid pipelines, optical signals, etc., can solve the problems of small detection range and high price of anti-collision systems, achieve safe effects, overcome inability to use, measure wide range of effects

Inactive Publication Date: 2018-09-11
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a car door opening anti-collision system based on millimeter wave radar to solve the problems of high price and small detection range of the existing anti-collision system

Method used

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  • Anti-collision system for car door opening based on millimeter-wave radar
  • Anti-collision system for car door opening based on millimeter-wave radar

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Embodiment Construction

[0020] As shown in the figure, the specific implementation method is as follows:

[0021] A car door opening anti-collision system based on millimeter-wave radar, including a control module, an A / D conversion module, a door trigger switch, a car lock control switch and a millimeter-wave radar, and the control module uses an ARM chip of LC67F500 as the core After performing analog filtering and amplification processing on the intermediate frequency signal returned by the front end, A / D conversion is performed and digital filtering is performed before FFT conversion, and then CFAR target detection and other related algorithms are executed in the frequency domain (specifically, according to millimeter wave radar detection The distance between the moving object and the car is detected twice, the speed is calculated according to the distance difference and time difference to obtain the speed information, and then the time T1 is calculated according to the speed information and the t...

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Abstract

Provided is an anti-collision system for car door opening based on a millimeter-wave radar. The anti-collision system comprises a control module, an A / D conversion module, a car door trigger switch, acar lock control switch and the millimeter-wave radar. A signal is sent to the control module by triggering the car door trigger switch. The control module controls the millimeter-wave radar to startdetecting information on a moving object around. The information on the moving object detected by the millimeter-wave radar is converted by the A / D conversion module and then transmitted to the control module. The control module calculates the time T1 that the moving object takes to reach a car door according to the information on the moving object and compares the T1 with a standard threshold value T0 in order to realize control. The system helps resolve the problems in the prior art such as short distance of ultrasonic measurement technology and higher cost than a CDD area-array camera. Meanwhile, the problem that a camera is unable to use on a foggy day is overcome. The millimeter-wave radar is adopted so that the measurement scope is broad. The millimeter-wave radar is not affected byweather.

Description

technical field [0001] The invention relates to an anti-collision device, in particular to an automobile door-opening anti-collision system based on millimeter wave radar. Background technique [0002] The number of cars in today's society is increasing, which inevitably leads to urban traffic congestion. In addition to normal driving, the parking problem of the car is also highlighted. At the same time, electric bicycles and mopeds are also developing rapidly, the conflict of road rights between different types of vehicles has intensified, and the number of safety accidents between motor vehicles and non-motor vehicles is also on the rise. When the motor vehicle is parked and the door is opened, accidents in which the door collides with the bicycles, motorcycles, and electric bicycles coming from behind occur frequently. In order to effectively reduce the traffic accidents caused by the opening of the car door when parking, on the one hand, the driver and the passengers n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60Q9/00B60Q1/52B60R16/023
CPCB60Q1/525B60Q9/008B60R16/023
Inventor 付主木张羽宋书中陶发展李勋朱龙龙
Owner HENAN UNIV OF SCI & TECH
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