Remote automatic monitoring system for subgrade settlement and monitoring method thereof

Abstract

The invention discloses a remote automatic monitoring system for subgrade settlement. The system comprises a monitoring terminal, an optical fiber sensing terminal and a transmission optical cable, wherein the transmission optical cable is connected with the optical fiber sensing terminal and the monitoring terminal; the optical fiber sensing terminal comprises an optical divider, an optical fiber displacement encoding device, a shell and a transmission device; the optical divider, the optical fiber displacement encoding device and the transmission device are arranged in the shell; and the optical divider is connected with the optical fiber displacement encoding device. By the optical fiber sensing terminal and the transmission device, the displacement of the subgrade settlement is converted into an optical code transmitted along an optical fiber, the optical code is remotely transmitted to the monitoring terminal through the transmission optical cable, and is subjected to operation such as photo-electric conversion, analysis processing, storage, display, alarm and the like in the monitoring terminal, and the subgrade settlement is remotely and automatically monitored in real time finally; and the remote automatic monitoring system is applied to the field of monitoring of subgrade settlement under complicated terrains and severe natural environments.

Description

technical field [0001] The invention relates to a subgrade settlement monitoring system, in particular to a subgrade subsidence monitoring system that does not require local power supply, is free from electromagnetic interference, and can be remotely and automatically read. It can be applied to all subgrade subsidence monitoring fields, especially suitable for complex terrain and natural environments. Poor subgrade settlement monitoring field. Background technique [0002] During the laying and later operation of roadbeds such as railways and highways, subsidence will occur. The monitoring of subgrade settlement is an important guarantee for the quality of subgrade construction and long-term safe operation. At present, the monitoring of subgrade settlement in my country is still based on the backward manual inspection method, and the auxiliary part is based on the settlement observation instrument composed of electronic components. These traditional monitoring instruments in...

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Problems solved by technology

[0003] The problems exposed during the use of the above-mentioned monitoring instruments are: (1) manual operation, low degree of automation, and high work intensity of monitoring personnel, especially in field monitoring, which consumes more manpower and material resources; (2) interference from human factors The reliability of monitoring data is difficult to guarantee; (3) local power supply is required, and power supply is required near the monitoring site, which is often difficult to achieve in remote areas such as southwest mountainous areas; (4) real-time monitoring cannot be realized, and the amount of measurement data is small. Low density; (5) Susceptible to electromagnetic interference such as lightning and static electricity

In particular, it cannot be monitored automatically in real time, and the operation is not convenient enough, so it cannot meet the development needs of high-level construction projects in my country.

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