A precision deceleration mechanism and beam automatic centering system and centering method

Abstract

The invention relates to a precise deceleration mechanism and an automatic light beam centering system and method. The precise deceleration mechanism comprises a pedestal, a reflector pressure plate, a lens rack, a lower support seat, an upper support seat, a universal joint pin and two sets of driving mechanisms; each set of driving mechanism comprises a spring, a stepping motor, a harmonic wave decelerator, a camshaft, a bulb, a shaft connection piece, an inner rotation ring and an outer rotation ring; the stepping motor and the harmonic wave decelerator are combined and mounted on the pedestal, the camshaft is fixed on an output shaft of the harmonic wave decelerator, and the camshaft is connected with the inner rotation ring via the shaft connection piece; the outer rotation ring is mounted on the pedestal; the pedestal is fixed to the lower support seat, the lower support seat is connected with the universal joint pin via a bearing, and the universal joint pin is connected with the upper support seat via the bearing; the lens rack is fixed on the upper support seat, a reflector is arranged in a groove of the lens rack, the reflector pressure plate is fixed to the lens rack, and the reflector is compressed; the bulbs are fixed in two vertical directions of the lens rack respectively, and abut against the camshafts respectively; and the spring hooks the part close to the bulbs of the pedestal and the lens rack.

Description

technical field [0001] The invention is applied to the automatic alignment of beams of a laser radar system. Background technique [0002] The laser beam emitted by the laser of the lidar should be strictly parallel to the receiver in the design. If it is not parallel, the laser reflected by the aerosol cannot accurately enter the receiver, causing the signal to weaken and increase the measurement error. In severe cases, the reflection cannot even be received. laser, so laser beam alignment of lidar is very important for measurement accuracy. Contents of the invention [0003] The problem solved by the technology of the present invention is: the large angle displacement of the stepper motor is converted into the small angle displacement of the reflector through the precision reduction mechanism of high precision and large reduction ratio, and the angular resolution of 5urad is achieved, and the adjustment of the reflector is completed. High-precision rotation angle contro...

AI Technical Summary

Problems solved by technology

[0003] The problem solved by the technology of the present invention is: the large angle displacement of the stepper motor is converted into the small angle displacement of the reflector through the precision reduction mechanism of high precision and large reduction ratio, and the angular resolution of 5urad is achieved, and the adjustment of the reflector is completed. High-precision rotation angle control, thereby realizing high-precision control of the beam

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