Fiber bragg grating settling sensor
A fiber grating and sensor technology, applied in the direction of converting sensor output, using optical devices to transmit sensing components, instruments, etc., can solve the problems of large measurement error, complex soil monitoring technology structure, inconvenient installation, etc., and achieve convenient installation and structure. Simple, portable and mobile effects
Active Publication Date: 2020-04-10
SHIJIAZHUANG TIEDAO UNIV
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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.
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[0047] Please also refer to figure 1 , image 3 and Figure 5 , as a specific embodiment of the fiber grating settlement sensor provided by the present invention, in the initial state, the top of the second tube body 200 is flush with the top end of the first tube body 100 .
[0048] In this way, the rigid member 600 can adopt a straight rod or a straight plate, and the connection operation with the elastic member 400 and the second pipe body 200 is more convenient.
[0049] Please also refer to figure 1 , image 3 and Figure 5 , as a specific embodiment of the fiber grating subsidence sensor provided by the present invention, the fiber grating subsidence sensor also includes an anchor head 700 arranged at the bottom of the first pipe body 100, and the top of the anchor head 700 is used to close the first pipe body 100 The bottom is open, and the bottom is used for anchoring into stable rock formations or soil layers. The bottom of the elastic member 400 is connected to...
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The invention provides a fiber bragg grating settling sensor, and belongs to the technical field of soil monitoring sensing. The sensor comprises a first pipe body, a second pipe body mounted outsidethe first pipe body in a sleeving manner, an elastic part mounted in the first pipe body and a rigid element arranged on the top of the first pipe body in an erecting manner, the bottom of the first pipe body is closed, the first pipe body and the second pipe body are in clearance fit, a stress part which is used for being in contact with a measured soil layer and bearing the down force of the measured soil layer is arranged on the outer wall of the second pipe body, the bottom of the elastic part is connected with the bottom of the first pipe body, the top of the elastic part extends to the outside of the first pipe body or is flush with the top end of the first pipe body, a fiber bragg grating used for monitoring the extension amount of the elastic part is arranged on the elastic part inan attaching manner, one end of the rigid element is connected with the top end of the elastic part, and the other end of the rigid element is connected with the top end of the second pipe body. Thefiber bragg grating settling sensor is precise in measuring result, simple in structure, rapid and convenient to mount, convenient to maintain, and convenient 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...
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Login to View More IPC IPC(8): E02D1/00E02D1/08G01B11/02G01D5/26
CPCE02D1/00E02D1/08E02D2600/10G01B11/02G01D5/268
Inventor 段君淼张浩钟志鑫翟步升郭志利张雷张兴豪程梓轩郑志超李晓瑾
Owner SHIJIAZHUANG TIEDAO UNIV