Static Ice Pressure Online Monitoring System Based On Distributed Network Of FBG Sensor

Extinction of ice is widely present in the process of China’s high-altitude northwest, southwest and north of the Huaihe River region, and many high-latitude and high altitude countries and regions, including North and South poles, this process is usually accompanied by a dramatic physical changes, and bring serious repercussions to regin’s geological and geomorphological, hydraulic construction facilities, water production practices, water cycle and climate have serious repercussions. With the development of technology and the growing range of human activities, the affect of the process on people’s lives caused by extinction of ice become increasingly prominent. thus, we urgently need to understand the mechanical properties of ice and extinction of changes in ice and its accompanying process, in order to provide the most direct scientific basis for us to study climate change, and the impact of human activities on climate and human production practices.In recent years, research organizations around the world are becoming more emphasis on research work situation ice cold areas. In China, Professor Qin Jianmin and his team from Taiyuan University of Technology based on years’experimental research and engineering practice, developed the ice thickness sensor based on the air, ice and water resistance characteristic differences detection principle, and successfully applied to the polar expedition and Yellow hydrological observations. But for the ice load of ice forces produced on various structures, we would need further study of the changes in ice mechanical strength and extinction processes, so as to acquire a more complete hydrological information. Based on the above background, this paper presents a static ice pressure monitoring system design based on a fiber Bragg grating sensors. This paper is supported by the National Natural Science Foundation of China,"based on the air, ice and water differences in the physical characteristics to achieve the ice extinction processes and mechanical strength of ice and it. principle of continuous on-line research detection (51279122)."FBG sensor is a new type of fiber-optic sensors, with good reliability, high sensitivity, simple structure, easy to jamming and distributed measurement and so on. The paper includes the following aspects study:1、According to the characteristics of ice detection and ice conditions detected scene harsh natural environment, we make improvement on our traditional fiber package structure, and designed dual fiber grating package with a hard membrane sheet to reduce edge loss sensors, real-time temperature compensation. 2、Using wavelength division multiplexing technology, combined with tunable wavelength demodulation method of fiber F-P filter, designed a static ice pressure monitoring system with a distributed network.3、According to the requirements of monitoring system, designed the hardware circuit, including the acquisition and processing circuit, fiber F-P filter wavelength demodulation system, optical signals, acquisition and processing circuit and the control system circuit.4、Designed the systematic software based on the monitoring system hardware circuit, including main system, sawtooth scanning voltage occurs, data collection, data storage and transmission and serial communication data and so on.5、Combined with our design sensor network, made experimental analysis of addressing capability of the sensor, detection capability and temperature compensated reference grating...