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A New Optical Rangefinder Design for Detection of Obstacles

机译:用于障碍物检测的新型光学测距仪设计

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摘要

This paper presents a distance sensor known as a rangefinder. This sensor measures the distances from a robot to obstacles based on the triangulation principle. This principle is widely used in photography and in other areas. For mobile robot applications, the rangefinder is designed to minimize the cost and the interference from external illumination in order to obtain a sufficiently large measurement distance. The light beam is generated with a small lamp and a lens. This light beam is reflected with a rotating mirror and scans the surrounding space. Obstacles reflect the light beam to the second mirror and the second mirror reflects it to the second lens. Then the focused light beam arrives at the line of optical sensors. A special electronic device gives the time of arrival of the light beam. This time is transformed to binary code for the computer. The computer transforms the binary code to the distance using the geometrical features of the rangefinder. The range-finder with 10 optical sensors will make approximately 1,000 measurements per second. In this article the scheme of the rangefinder is described. The main parameters of the rangefinder prototype are presented.
机译:本文介绍了一种称为测距仪的距离传感器。该传感器根据三角测量原理测量从机器人到障碍物的距离。该原理已广泛用于摄影和其他领域。对于移动机器人应用,测距仪旨在最大程度地降低成本和外部照明的干扰,从而获得足够大的测量距离。光束由小灯和透镜产生。该光束被旋转镜反射并扫描周围的空间。障碍物将光束反射到第二反射镜,第二反射镜将其反射到第二透镜。然后,聚焦的光束到达光学传感器线。特殊的电子设备会给出光束的到达时间。这段时间将转换为计算机的二进制代码。计算机使用测距仪的几何特征将二进制代码转换为距离。带有10个光学传感器的测距仪每秒将进行约1000次测量。本文介绍了测距仪的方案。介绍了测距仪原型的主要参数。

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  • 作者单位

    Centra de Ciencias Aplicadas y Desarrollo Tecnologico (CCADET), Universidad Nacional Autonoma de Mexico (UNAM), Ciudad Universharia, Circuito Exterior s, Coyoacan,04510 Mexico City, Mexico;

    Centra de Ciencias Aplicadas y Desarrollo Tecnologico (CCADET), Universidad Nacional Autonoma de Mexico (UNAM), Ciudad Universharia, Circuito Exterior s, Coyoacan,04510 Mexico City, Mexico;

    Centra de Ciencias Aplicadas y Desarrollo Tecnologico (CCADET), Universidad Nacional Autonoma de Mexico (UNAM), Ciudad Universharia, Circuito Exterior s, Coyoacan,04510 Mexico City, Mexico;

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  • 正文语种 eng
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  • 关键词

    rangefinder; mobile robot; low cost; wide range of scanning;

    机译:测距仪;移动机器人;低成本;扫描范围广;

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