System and method for remotely measuring building displacement under complex meteorological conditions

Abstract

The invention discloses a system and a method for remotely measuring building displacement under complex meteorological conditions. The system comprises: a total reflection prism fixed on a to-be-detected building; a laser emitter fixed in a stable region and opposite to the inclined surface of the total reflection prism, wherein laser s emitted by the laser emitter is perpendicular to the inclined plane of the total reflection prism; and a measuring plate vertically arranged, located between the laser emitter and the total reflection prism and close to the laser emitter, wherein a through hole is formed in the measuring plate, and is used for the laser generated by the laser emitter to penetrate through, and scales are arranged on the plate surface of the measuring plate. The total reflection prism and the laser emitter cooperate with each other, the coordinates identified by the reflected laser are identified and read before and after construction, the displacement data of the to-be-measured building is further calculated, and the displacement measurement precision under complex meteorological conditions can be effectively improved due to the fact that the laser rarely diffractsin atmospheric transmission.

Description

technical field [0001] The invention belongs to the field of engineering measurement, and in particular relates to a system and a method for remotely measuring building displacement under complex meteorological conditions. Background technique [0002] The total station, that is, the electronic total station (Electronic Total Station), is a high-tech measuring instrument integrating light, machinery and electricity. ), height difference measurement functions in one surveying and mapping instrument system. Compared with the optical theodolite, the electronic theodolite replaces the optical dial with a photoelectric scanning dial, and replaces the manual optical micrometer reading with the automatic recording and display reading, which simplifies the angle measurement operation and avoids the occurrence of reading errors. Because it can complete all the survey work on the station once the instrument is placed, it is called a total station. It is widely used in the field of p...

AI Technical Summary

Problems solved by technology

However, at present, the total station is mainly used for measurement in the process of measurement or monitoring. Due to the limitation of the minimum angular resolution of the total station, it cannot distinguish small displacements under long-distance conditions. In thunderstorms, icing, turbulence, wind shear In bad weather with complex meteorological conditions such as variable and low visibility, the unevenness of the atmospheric density will cause the laser propagation speed to be uneven, and the measurement accuracy will decrease during the long-distance measurement process, making accurate measurement impossible.

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