Automobile collision-proof one-dimensional scanning lidar system

A scanning laser and anti-collision system technology, applied in the field of lidar automobile anti-collision system, can solve the problems of limited anti-collision effect, large volume, slow imaging speed, etc., achieve huge economic and social benefits, high scanning frequency, high scanning short time effect

Inactive Publication Date: 2006-10-18
HARBIN INST OF TECH AT WEIHAI
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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 ...

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  • Automobile collision-proof one-dimensional scanning lidar system

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Embodiment Construction

[0009] From figure 1 It can be seen from the figure that the one-dimensional scanning laser radar vehicle anti-collision system includes laser 1, polarization beam splitter 2, beam expander optical system 3, quarter wave plate 4, mirror 5, one-dimensional scanning galvanometer 6, axis Cover 6-1, shaft rod 6-2, light detector 7, amplifier 8, signal processing system 9, display alarm system 10, braking system 11, etc. The beam expanding optical system 3 consists of a small lens 3-1 and a large Lens 3-2 composition. The above components are installed on the housing bottom plate 12 . Wherein the amplifier 8 and the signal processing system 9 are connected with wires, and the signal processing system 9, the display alarm system 10, and the braking system 11 are connected with each other with wires. Their specific composition, structure, connection and their effects belong to the prior art and will not be described in detail. .

[0010] The present invention is characterized in t...

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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 ...

Claims

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Application Information

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IPC IPC(8): G01S17/93
Inventor 田兆硕孙正和曲士良陈相君
Owner HARBIN INST OF TECH AT WEIHAI
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