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Vehicle mounted scanning type laser radar detection system and method for detecting dangerous articles ahead

A technology of laser radar and detection system, which is applied in vehicle parts, transportation and packaging, etc., can solve the problems of high cost of optical scanning mirror and high price of measurement system

Inactive Publication Date: 2006-09-13
TSINGHUA UNIV
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

) introduces the design of an optical scanning laser ranging radar, which can realize a wide range of scanning and ranging. The disadvantage is that the optical scanning method is used. Due to the high cost of the optical scanning rotating mirror, the entire measurement system is expensive.

Method used

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  • Vehicle mounted scanning type laser radar detection system and method for detecting dangerous articles ahead
  • Vehicle mounted scanning type laser radar detection system and method for detecting dangerous articles ahead
  • Vehicle mounted scanning type laser radar detection system and method for detecting dangerous articles ahead

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Embodiment Construction

[0043] The specific embodiment of the present invention will be described with reference to the accompanying drawings.

[0044] 1. Vehicle-mounted scanning lidar detection system

[0045] like figure 1As shown, the laser emitting part includes a laser diode driver 103, a laser diode 104, an emitting lens 105 and a fixed lens 106, and the controller 101 sends an instruction to the laser diode driver 103, and the laser diode driver (commonly available laser diode drivers get final product) There is a boost circuit, after receiving the control command, the high voltage is sent to the laser diode, and the laser diode is excited to emit laser light. The laser light is projected through the emitting lens 105 and reflected by the fixed mirror 106, and then enters the scanning component. The scanning assembly mainly includes the stepping motor and the cam assembly 110 of the scanning lens 112 and its driving, and the stepping motor drive circuit 116 (common commercially available ste...

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Abstract

The invention is a kind of car scanning laser radar detecting system and the method for detecting forward dangerous which belongs to car traveling information sensing and processing technology field. The character lies in: the scanning component contains two scanning lens and step-by-step motor which drives the lens to rotate, the instruction output end of the controller control the step-by-step motor to rotate and stop through driving circuit; the step-by-step drives the scanning lens to rotate through a convex wheel mechanism and a V type pendulum rod. Thus the laser is used to scan in a fixed angle range. The invention uses the time difference sent by the laser and reflected by the target to calculate the target object distance, uses the angle from scanning to the status reflected by the target object to calculate the object position angle, and finally outputs the distance and position angle information of danger. The system can realize the scan in wide range, the cost is low. The method can identify the dangerous object effectively.

Description

technical field [0001] The vehicle-mounted scanning laser radar detection system and its method for detecting dangerous objects in front belong to the perception and processing of vehicle driving information [0002] technology field. Background technique [0003] Vehicle driving information perception and processing technology is one of the key technologies for modern automobile control and safety. Existing measurement technologies are divided into microwave measurement systems and laser measurement systems according to their application media. The laser radar system is characterized by fast measurement speed, high precision, It has received wide attention due to its long measuring range. Document 1 (Yu Chengbo, Wan Wenlue, Zheng Yougen: "Development of Automobile Laser Radar Automatic Anti-collision Microcomputer Control System", Journal of Instrumentation, Volume 22, Issue 4, August 2001.) and Document 2 (Shen Mingxia, Li Xun : "A Design of Anti-collision Ranging Radar"...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60R27/00B60R99/00
Inventor 李克强侯德藻刘锋罗禹贡杨殿阁连小珉
Owner TSINGHUA UNIV
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