Laser radar automatic focusing device

Abstract

The invention aims to provide the laser radar automatic focusing device which is compact in structure and high in focusing precision. The laser radar automatic focusing device comprises a conveying mechanism, a six-axis mechanical arm, a dispensing mechanism and two sets of calibration mechanisms, wherein the dispensing mechanism is arranged on one side of the conveying mechanism, the six-axis mechanical arm is arranged in the middle of the laser radar automatic focusing device, and the two sets of calibration mechanisms are the transmitting end calibration mechanism and the receiving end calibration mechanism and located on the two sides of the six-axis mechanical arm. The calibration mechanism comprises a six-axis adjusting table, a linear moving mechanism and a visual camera, a laser radar carrier on the linear moving mechanism electrically emits a laser signal to the visual camera, and the visual camera converts the laser signal into an ordered electric signal and transmits the ordered electric signal to a control mechanism of the laser radar automatic focusing device. And the six-axis adjusting table performs fine adjustment on the transmitting end PCB and the receiving end PCB according to an instruction sent by the control mechanism. The invention is applied to the technical field of focusing devices.

Description

technical field [0001] The invention is applied to the technical field of focusing equipment, and in particular relates to a laser radar automatic focusing equipment. Background technique [0002] The core component in the unmanned driving industry is lidar, which is widely used in ADAS systems, such as adaptive cruise control, front collision warning and automatic emergency braking. Lidar has the advantages of high precision and high resolution, and at the same time It has the prospect of establishing a surrounding 3D model. The working principle is that the transmitter sends a signal to the target, which is collected by the receiving system after being reflected by the target. The laser radar is imaged on the high-resolution camera through the optical filter system, and the target echo and Compared with the transmitted signals, the distance to the target is determined. However, its disadvantage is that the detection signal for stationary objects is weak. The main reason is...

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Problems solved by technology

[0002]The core component in the unmanned driving industry is lidar, which is widely used in ADAS systems, such as adaptive cruise control, front collision warning and automatic emergency braking LiDAR has the advantages of high precision and high resolution, and at the same time has the prospect of establishing a 3D model of the surrounding area. The working principle is that the transmitter sends a signal to the target, and it is collected by the receiving system after being reflected by the target. The laser radar is imaged on a high-resolution camera, and the target echo is compared with the transmitted signal to determine the distance of the target. However, its disadvantage is that the detection signal for stationary objects is weak, mainly because the transmitting board and the receiving board are on the laser radar. The installation position of the laser radar is not accurate enough. However, the existing laser radar focusing technology is mostly done manually. The slide table is manually adjusted and manually adjusted slowly. The accuracy is relatively rough, and there may be an error of a few millimeters. On the other hand, the focusing efficiency is low and the yield rate is not high. The Chinese patent No. CN113030904A discloses an automatic focusing device and a focusing method of a laser radar light source, which realizes automatic focusing, improves the degree of automation, and reduces the time spent in the debugging process. However, there is a phenomenon of low focusing precision, so it is necessary to provide a laser radar autofocus device with a compact structure and high focusing precision

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