Automobile collision-proof one-dimensional scanning lidar system

Abstract

The automobile collision-proof one-dimensional scanning lidar system includes casing, laser, polarizing spectroscope, optical beam expander, quarter wave plate, reflector, one-dimensional scanning vibration mirror, light detector, amplifier, signal processing system, display and warning system and brake system. The present invention has low cost, small size, easy installation, high scanning frequency, precise detection of obstacle direction and long detection distance, and possesses functions of target distinction, ranging, measuring speed, intelligently keeping away from obstacle, etc. to prevent collision to various kinds of obstacle.

Description

technical field [0001] The invention relates to a laser radar device, in particular to a laser radar vehicle anti-collision system. Background technique [0002] At present, the systems that can be applied to automobile anti-collision mainly include: ultrasonic anti-collision radar, its disadvantage is that it is easily affected by atmospheric turbulence and air vortex, in addition, its operating distance can only reach a few meters to more than ten meters. Microwave, millimeter wave and laser ranging radars can generally only measure targets in a single direction, and it is not easy to measure multiple targets and accurately measure obstacles, so it is not easy to identify targets, and the actual collision avoidance effect is limited. CCD camera system technology is mature, but it cannot measure the distance of the target and cannot work around the clock. Laser imaging radar can display the three-dimensional image, distance, and speed of the target through two-dimensional ...

AI Technical Summary

Problems solved by technology

[0002] At present, the systems that can be applied to automobile anti-collision mainly include: ultrasonic anti-collision radar, its disadvantage is that it is easily affected by atmospheric turbulence and air vortex, in addition, its operating distance can only reach a few meters to more than ten meters

Microwave, millimeter wave and laser ranging radars can generally only measure targets in a single direction, and it is not easy to measure multiple targets and accurately measure obstacles, so it is not easy to identify targets, and the actual anti-collision effect is limited

CCD camera system technology is mature, but it cannot measure the distance of the target and cannot work around the clock

Laser imaging radar can display the three-dimensional image, distance, and speed of the target through two-dimensional laser scanning, and perform target recognition. Its disadvantages are high requirements for lasers and scanning devices, slow imaging speed, poor image resolution, complex structure, and large volume. ,high cost

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