Simple cascading camera chain measuring method and system for monitoring multipoint settlement

Abstract

The invention relates to an automatic simple cascading camera chain monitoring method and system. The system is formed by serially connecting a plurality of measuring units, wherein each measuring unit consists of a camera and a cooperation mark which is fixedly connected with the camera. A measuring unit is arranged at each position to be measured in the region along the line, each settlement to-be-measured point is connected with a plurality of settlement known control points, the camera is required to simultaneously photograph two cooperation marks on the left side or the right side in the measuring process, and the settling volume of each mark and pitch angle of each camera can be directly calculated by virtue of the fixed connection constraint of the camera and the mark in each measuring unit and the geometric constraint relation of each homonymous mark imaging of adjacent cameras. According to the method, one camera only needs to be fixedly connected with single mark point and the relation between the camera and the mark point does not need to be calibrated, thereby avoiding the complicated operation for precisely determining the relative relation among multiple cameras and between the cameras and the fixedly connected multiple control points. The method can be used for automatically monitoring the settlement of roadbeds, bridges and the like and has important theoretical research significance and wide application prospect.

Description

technical field [0001] The invention relates to a minimalist series camera chain automatic monitoring method and system for railway (including subway, high-speed rail), highway, tunnel and other engineering subgrades, grounds, and bridge settlements, specifically a camera chain using a minimalist series camera chain The measurement technology realizes the method and system of subgrade, ground and bridge settlement automatic monitoring. Background technique [0002] The extensive construction and use of infrastructure such as railways, bridges, tunnels, dams, roads, and buildings has greatly promoted the improvement of people's daily life and the development of social economy. However, during the construction and operation of these important infrastructures, the soil pores may be compressed and deformed due to external loads, resulting in settlement. Small deformations may cause cracks in road surfaces, walls, and dams, and what is more, will lead to collapse accidents, brin...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved in the present invention is: aiming at the engineering difficulties of subgrade, ground and bridge settlement monitoring of important infrastructures such as railways, highways and tunnels, a new minimalist series camera chain method for monitoring multi-point settlement is proposed. Realize high-precision and long-term continuous monitoring of subgrade, ground, and bridge settlement under the conditions of the measurement area where settlement may exist

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