1. Immunity to electromagnetic interference:

Due to the strong electromagnetic interference in environments such as subway tunnels, traditional temperature sensors based on electrical signals are generally limited in terms of safety and signal stability. The advantages of optical fiber's anti-electromagnetic interference ability, convenient networking, and its inherent large signal transmission bandwidth make the optical fiber temperature sensor break through the limitations of electrical temperature sensors and provide a very effective temperature for subway tunnels and other environments with strong electromagnetic field interference. measurement technology.

2. Rapidity:

The temperature measurement and positioning speed of the tunnel temperature sensing system is very high. In order to improve the measurement time, Huaguang Tianrui adopts the advantages of high-speed weak signal processing technology, the shortest single measurement time is 5s, and the response speed is fast.

3. Distribution characteristics:

The cable tunnel optical fiber temperature measurement system can provide continuous dynamic monitoring of temperature change signals at every 1 meter point within a range of more than ten kilometers, and can set the temperature alarm value at all levels arbitrarily.

4. Advanced:

The system is a distributed temperature measurement product with the highest performance index, the strongest functionality, the highest reliability and the most advanced technology in China. The key devices are high-performance devices, and the core algorithms have been rigorously tested.

5. Accuracy

The temperature resolution of the system reaches 0.1°C, the temperature accuracy is 1°C, and the positioning accuracy can reach 1m.