Optical detection and measurement radar having multiple sensors

Abstract

In order to solve the problem that the scanning times of optical detection and measurement radar for measuring an obstacle are insufficient, thus limiting the accuracy of distance measurement, the invention provides an optical detection and measurement radar having multiple sensors. The optical detection and measurement radar comprises the following parts: a rotating shell and a base, wherein therotating shell rotates relative to the base; two or more infrared light emitting modules fixed in the rotating shell to emit infrared detection light; two or more photoelectric distance measurement units fixed in the rotating shell, wherein each photoelectric distance measurement unit comprises photoelectric sensors, and the photoelectric sensors are used for converting a received infrared light signal into an electric signal; a rotary driving motor used for driving the rotating shell to rotate at a constant speed; and a slip ring and a corresponding driving circuit. By means of the design ofthe two or more sensors, the optical detection and measurement radar provided by the invention increases the measurement times within a single measurement period and improves the distance measurementaccuracy compared with an optical detection and measurement radar having a single sensor.

Description

technical field [0001] The present application belongs to the field of optical detection radar, and in particular relates to a light detection and ranging radar (Light Detection And Ranging, LIDAR) with two or more sensors. Background technique [0002] Obstacle avoidance is an important topic in the field of intelligent robots and small UAVs. Intelligent robots and unmanned aerial vehicles need to monitor the surrounding environment obstacles in real time during their actions, quickly and accurately determine the location of obstacles, and then avoid them in time. In order to avoid obstacles, it is necessary to measure the distance between the robot or UAV and the obstacle through the ranging device. [0003] At present, there are distance testing methods on the market, mainly laser ranging technology based on the principle of triangulation. The laser emits an infrared beam at a certain angle, and when it encounters an object, the beam will be reflected back; after the re...

AI Technical Summary

Problems solved by technology

[0005] However, under strong outdoor light, since the sunlight contains a large number of infrared beams, when the light detection and measurement radar device is working, the receiver not only receives the reflected detection light, but also receives the background light reflected by the sunlight , leading to inaccurate values ​​measured by light detection and measurement radar

In addition, in the existing optical scanning detection device, the scanning probe rotates 360 degrees clockwise or counterclockwise. In each angle state of rotation, the number of scans for obstacle measurement is limited, which limits the accuracy of distance measurement.

Images