Fiber Bragg Grating Settlement Sensor

Abstract

The invention provides a fiber grating settlement sensor, which belongs to the technical field of soil monitoring and sensing, and comprises a first pipe body, a second pipe body sleeved outside the first pipe body, an elastic member arranged inside the first pipe body, and Rigid elements erected on the top of the first pipe body; the bottom of the first pipe body is closed; the second pipe body and the first pipe body are in clearance fit; the outer wall of the second pipe body is provided with a The force bearing part of the pressure under the measured soil layer; the bottom of the elastic member is connected to the bottom of the first pipe body, and the top extends to the outside of the first pipe body or is flush with the top of the first pipe body; The optical fiber grating of the elongation of the elastic part; one end of the rigid element is connected with the top of the elastic part, and the other end is connected with the top of the second tube body. The optical fiber grating settlement sensor provided by the invention has accurate measurement results, simple structure, convenient installation, convenient maintenance, and is easy to carry and move.

Description

technical field [0001] The invention belongs to the technical field of soil monitoring and sensing, and more specifically relates to an optical fiber grating settlement sensor. Background technique [0002] In recent years, due to factors such as high-rise building construction, underground mining of minerals, groundwater, and soft ground subsidence, the foundation has subsided, making settlement monitoring very important for the safety of high-rise buildings and the safety of high-speed rail traffic. In many engineering practices, more or less hazards caused by soil settlement abound. Therefore, in today's era of rapid technological advancement, people need to monitor the settlement of soil in real time, which requires people to use technology to develop Some useful tools. [0003] In the process of realizing the present invention, the inventors found that there are at least the following problems in the prior art: the existing soil monitoring technologies basically have c...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a fiber grating subsidence sensor, which aims to solve the technical problems that the existing soil monitoring technology is basically complicated in structure, large in measurement error, and inconvenient to install.

Images