MEMS (Micro Electro-Mechanical System) micromirror scanning laser radar system and scanning method thereof
A scanning laser and radar system technology, which is applied in the field of laser detection, can solve the problem of the number of laser receivers with limited resolution, and achieve the effect of reducing cost, simple and compact structure, and reducing the number
Inactive Publication Date: 2018-12-18
BEIJING JINGWEI HIRAIN TECH CO INC
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[0006] In view of this, the present invention provides a MEMS micromirror scanning laser radar system and scanning method thereof, to solve the problem that the resolution of the existing MEMS micromirror scanning laser radar is limited by the number of laser receivers
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[0044] The above is the core idea of the present invention. In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention Description, obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0045] An embodiment of the present invention provides a MEMS micromirror scanning laser radar system. The MEMS micromirror scanning laser radar system is a MEMS micromirror scanning laser radar system for coaxial transmission and rece...
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The invention provides an MEMS (Micro Electro-Mechanical System) micromirror scanning laser radar system and a scanning method thereof. The system comprises a laser transmitter, a laser receiver, a loop device, an MEMS micromirror and a time sequence control and measurement module, wherein the laser transmitter transmits laser; the loop device transmits laser to the MEMS micromirror; the MEMS micromirror reflects the laser output from the loop device to a target area, and reflects the reflected light of an obstacle in the target area back to the loop device; the loop device transmits the reflected light, which is reflected by the MEMS micromirror, of the obstacle to the laser receiver; the laser receiver generates an echo signal according to the received reflected light of the obstacle; and the time sequence control and measurement module generates a scanning result according to the echo signal generated by the laser receiver and angle information fed back from the MEMS micromirror. Therefore, on the basis of realizing the high resolution ratio of a laser radar system, the number of laser receivers in the radar laser system is reduced, and the cost of the laser radar system is lowered.
Description
technical field [0001] The invention relates to the technical field of laser detection, in particular to a MEMS micromirror scanning laser radar system and a scanning method thereof. Background technique [0002] Cameras, mmWave radar, and LiDAR are the three most common environmental perception sensors in smart-driving cars. Since lidar can accurately model the environment around the vehicle, highly autonomous driving (above L3 level) smart driving cars must be equipped with lidar. [0003] Laser radar can be divided into non-scanning laser radar and scanning laser radar according to whether there is a scanning mechanism, and scanning laser radar can be divided into mechanical rotation type, electronic scanning type and MEMS (Micro-Electro-Mechanical System System) according to different scanning mechanisms. , MEMS) micromirror scanning lidar. Since the solid-state scanning technology based on MEMS micromirror scanning makes the miniaturization, low cost and low power con...
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IPC IPC(8): G01S17/93
CPCG01S17/931
Inventor 张松薛俊亮万亮
Owner BEIJING JINGWEI HIRAIN TECH CO INC