Multi-spectral scanning foresight anti-collision laser radar device and application thereof

A technology of laser radar and line scanning, which is applied in measuring devices, using re-radiation, radio wave measurement systems, etc., can solve the problems of small scanning angle, complex optical path, inconvenient wide application, etc., and achieve the effect of improving judgment ability

Inactive Publication Date: 2012-02-01
李少勤
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although its scanning realizes two-dimensional scanning, although the scanning angle of the DMD chip is enlarged through the lens group, the scanning angle is also very small, which further leads to a complicated optical path, and it is quite expensive, which is not convenient for wide application

Method used

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  • Multi-spectral scanning foresight anti-collision laser radar device and application thereof
  • Multi-spectral scanning foresight anti-collision laser radar device and application thereof
  • Multi-spectral scanning foresight anti-collision laser radar device and application thereof

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Embodiment

[0025] like figure 1 As shown, a multi-line scanning forward-looking anti-collision lidar device includes a laser emitting system, a polyhedron rotating scanning system, a laser receiving and detecting system, and a control drive system. The laser emitting system includes a laser 3 and a collimator 4, and the laser 3 is connected with the collimator 4; the polyhedron rotary scanning system includes a polyhedron drum 6, a rotary motor and a photoelectric pair 11. The rotating motor is connected with the polyhedron drum 6, which can drive the polyhedron drum 6 to rotate. The upper end of the polyhedron drum 6 is provided with a polyhedron reflector 13, and the lower end of the polyhedron drum 6 is a uniformly divided sawtooth structure. The photoelectric pair 11 is arranged on the lower end of the polyhedron drum 6, and the rotation angle of the polyhedron drum 6 can be tested; the laser receiving and detecting subsystem includes a perforated mirror 5, a receiving lens 8, an APD...

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Abstract

The invention discloses a multi-spectral scanning foresight anti-collision laser radar device and application thereof. The multi-spectral scanning foresight anti-collision laser radar device comprises a laser emission system, a polyhedral rotary scanning system, a laser reception and detection system and a control drive system; the laser emission system, the polyhedral rotary scanning system and the laser reception and detection system are sequentially connected; and the laser emission system, the polyhedral rotary scanning system and the laser reception and detection system are also respectively connected with the control drive system. The application method of the multi-spectral scanning foresight anti-collision laser radar device comprises the following steps of: transmitting narrow-pulse beams on a polyhedral reflector (13) by a laser (3), wherein multiple spectrums can be scanned in a vertical foresight road direction because the relative rotating shaft of each surface of the polyhedral reflector (13) has different small inclinations; and giving out related alarms based on data by a control system (1). Compared with the prior art, the multi-spectral scanning foresight anti-collision laser radar device has the advantages of capabilities of obtaining a wide field scanning range, detecting the height and position information of a barrier, and the like.

Description

technical field [0001] The invention relates to a forward-looking anti-collision laser radar device and its application, in particular to a multi-line scanning forward-looking anti-collision laser radar device and its application. Background technique [0002] According to statistics, nearly 45% of vicious accidents on the expressway all originate from automobile rear-end collision, and the immediate cause of rear-end collision is that the driver is difficult to see clearly or distracts attention to the obstacles ahead. The most effective way to reduce accidents is to let the car have a collision warning or active obstacle avoidance function. [0003] Vehicle radar is divided into ultrasonic radar, infrared radar, lidar and microwave radar. Ultrasonic radar and infrared radar are mainly used in vehicle reversing control systems because of their relatively short detection distances. [0004] The advantages of lidar are relatively simple structure, high monochromaticity, hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/93G01S17/06
Inventor 李少勤
Owner 李少勤
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