1.Basic principles and product introduction

The light source emits near-infrared laser pulses into the sensing fiber, and when the laser pulse propagates along the forward direction of the fiber, it is partially reflected by the ultra-weak grating sensor array connected in series on the fiber, and these reflections are detected and analyzed in real time after returning back along the same fiber. The module supports remote operation, configuration and data acquisition,power-on self-starting, adopts advanced signal demodulation algorithms.accurately obtains the position and temperature or strain value of each sensor, and returns through Ethernet or WIFl.

2.Product advantages

(1)Long-distance distributed test, test distance 10km.(2)Strong spatial resolution,using TDM+WDM multiplexing mode, the highest spatial resolution capacity reaches 0.5m.

(3)Has fast demodulation speed,single-channel sampling speed is better than l Hz, and high real-time performance.(4)Thousands of measurement points can be collected at the same time, with high system integration.

(5)Multi-channel expansion to achieve centralized testing of multiple test lines.(6)Modular design,low system power consumption,field testing and networking is simple.

3.Typical applications

(1)Strain monitoring in civil engineering.

(2)Strain monitoring of geological hazards.(3)Strain monitoring of intelligent roads, buildings and bridges.

4.Product indicators