Low-cost indoor 3D laser scanning ranging system based on ARM, and method

Abstract

The invention discloses a low-cost indoor 3D laser scanning ranging system based on an ARM, and a method. The system comprises a pedestal, a bracket, a laser transmitter, a camera, an ARM processing platform, a wireless communication module and an upper computer; the bracket is arranged on the pedestal through a steering engine and can rotate horizontally on the pedestal; the bracket is provided with the laser transmitter and the camera, the laser transmitter and the camera are located in the same horizontal plane, the laser transmitter is arranged on the bracket through a rotating device, andthus, the laser transmitter is enabled to rotate horizontally on the bracket; the ARM processing platform is arranged on the pedestal, used for image processing and distance calculation and connectedwith the camera; the wireless communication module is arranged on the pedestal, connected with the ARM processing platform and used for the ARM processing platform and the upper computer to mutuallytransit data and instruments. The system provided by the invention is low-cost and simple in structure, reduces noise in images and improves calculation efficiency and calculation precision.

Description

technical field [0001] The invention belongs to the technical field of laser distance measurement, and in particular relates to an ARM-based low-cost indoor 3D laser scanning distance measurement system and method. Background technique [0002] Because of the characteristics of good monochromaticity, strong directionality and high coherence, laser is widely used in distance measuring devices, which can greatly improve the measurement accuracy. The methods of laser ranging include pulse method, phase method and triangulation method, among which the triangulation method has good application effect and low production cost, and is currently a hot spot in the research of laser ranging. [0003] The 3D laser ranging sensor can obtain the distance from the scanning interface of the target object to the sensor at each corner. Since this type of data looks like a cloud composed of many small points after visualization, it is called a point cloud. 3D laser point cloud data has the ad...

AI Technical Summary

Problems solved by technology

[0004] However, the 3D laser sensors on the market are often expensive and complex in structure, and are difficult to be adopted on a large scale. For price and accuracy considerations, the combination of a 2D laser ranging sensor on a rotating pan / tilt has become a common method for obtaining 3D laser data.

However, the cost of the two-dimensional laser ranging sensor is still very high, and the two-dimensional sensor with the rotating head needs to collect data on the industrial computer or ordinary PC. This system is not only large in size and high in cost, but also limited to laboratory or industrial use. , so using this system to collect 3D data of indoor scenes will lead to problems such as high measurement cost and troublesome installation

Images