The invention discloses a laser ranging anti-collision method with strong anti-interference capability, which comprises the following steps that: A, in the moving process of a vehicle or an object, a data acquisition control unit obtains a measured distance L between a travelling crane and an obstacle; b, when the measured distance L is smaller than a set distance threshold value, the data acquisition control unit measures the number N of emitted laser beams and the number n of received reflection signals within the time t at the same time; c, calculating the intrusion rate within the time t; c1, when the intrusion rate is smaller than a set intrusion rate threshold value, the data acquisition control unit filters error signals; and c2, when the intrusion rate is greater than a set intrusion rate threshold value, the data acquisition control unit sends an alarm signal and/or a control signal. A vehicle or an object runs in a workshop with a large amount of dust or in a rainstorm open-air environment, the laser distance measuring sensor sends out a laser signal, and when a laser beam is interfered by dust or raindrops, a wrong signal can be judged and filtered, so that early warning, deceleration/steering and braking/hovering are avoided.
本发明公开了一种抗干扰能力强的激光测距防撞方法,包括步骤:A,在车辆或物体运动过程中,数据采集控制单元得到行车与障碍物之间的测定距离L;B,当测定距离L<设定距离阈值时,数据采集控制单元同时测定在△t时间内,发出激光束数量N和接收反射信号数量n;C,计算得到△t时间内的入侵率;c1,当入侵率小于设定的入侵率阈值时,数据采集控制单元过滤误信号;c2,当入侵率大于设定的入侵率阈值时,数据采集控制单元发出报警信号和/或控制信号。车辆或物体在弥漫大量粉尘的车间厂房或暴雨露天环境中运行,激光测距传感器发出激光信号,激光束在受到粉尘或雨点的干扰时,能够判断并过滤误信号,避免提前报警、减速/转向以及制动/悬停。
Laser ranging anti-collision method
激光测距防撞方法
2022-05-06
Patent
Electronic Resource
Chinese
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