Laser radar device and channel gating method thereof

Abstract

The present invention discloses a laser radar device and a channel gating method thereof. The device comprises: a laser emission device having N semiconductor lasers arranged in an emission array andconfigured to emit N emission light, wherein the N semiconductor lasers are arranged on M emission circuit boards of the laser emission device, and M is smaller than N; an emission module configured to regulate the angles of the N emission light; a receiving module configured to regulate the angles of incident light; and a laser receiving device having N photoelectric sensors arranged in a receiving array and configured to receive the incident light regulated by the receiving module, wherein the position of the nth semiconductor laser in the emission array is the same as the position of the nth photoelectric sensor in the receiving array, the emission module and the receiving module have corresponding optical paths, and the emission light emitted by the nth semiconductor laser is incidentinto the nth photoelectric sensor after passing through a target object. The laser radar device and the channel gating method thereof are concise in installation process and convenient to achieve lowcost and miniature of the device.

Description

technical field [0001] The invention relates to the field of multi-channel laser measurement, in particular to a laser radar device and a channel gating method thereof. Background technique [0002] Such as figure 1 , 2 Shown is the scanning array in the lidar of US patent application US8767190B2. [0003] Wherein, the motherboard 20 is arranged on the frame 22 . A plurality of emission panels 30 are inserted on the motherboard 20 in sequence, and a plurality of detection panels 32 are inserted in the motherboard 20 in sequence. Multiple emission panels 30 are arranged along the vertical direction, and multiple detection panels 32 are arranged along the vertical direction. Each emission panel 30 is provided with an emitter, and each detection panel 32 is provided with a detector. [0004] Such as figure 2 As shown, the plurality of detection panels 32 are set in a fan shape as a whole to generate a field of view from 10 degrees above the horizontal line to 30 degrees ...

AI Technical Summary

Problems solved by technology

In order to obtain accurate scanning results, during the actual installation process of this product, the error of its insertion must reach the micron level, and the process of adjusting the angle between the two boards and fixing it at a specific angle is also relatively complicated

Therefore, the installation process corresponding to this structure is complicated, the production efficiency is low, the cost is high, and the yield rate is low.

[0007] In addition, each emitter or detector in this structure needs to be separately installed on a panel, which requires a large number of panels, increases the weight and volume of the system, and makes it difficult to achieve low cost and miniaturization of equipment

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