Composition and advantages of distributed fiber optic temperature measurement sensor system for rail transit cables-INNO

Hệ thống đo nhiệt độ cáp quang đóng vai trò quan trọng trong các tuyến đường sắt vận chuyển đường sắt. FJINNO cung cấp hệ thống đo nhiệt độ sợi quang để đo nhiệt độ sợi quang khoảng cách xa trong hầm đường sắt, với hiệu suất ổn định, chống nhiễu điện từ, tỷ lệ đấu thầu thành công cao, và giá cả hợp lý.

Một số lượng lớn cáp thường được đặt trong hầm đường sắt, và nếu dây cáp bị hỏng, nó sẽ ảnh hưởng đến việc vận hành an toàn của tàu hỏa. Vì thế, Sở đường sắt cần làm tốt công tác vận hành và bảo dưỡng cáp bên trong đường hầm. Để tạo điều kiện thuận lợi cho việc vận hành và bảo dưỡng cáp trong hầm, Công nghệ đo nhiệt độ sợi quang có thể được áp dụng hợp lý.

Thành phần của hệ thống đo nhiệt độ sợi quang cho cáp đường hầm

Hệ thống đo nhiệt độ sợi quang cáp chủ yếu bao gồm máy chủ đo nhiệt độ sợi quang, temperature sensing fiber optic, monitoring management software, alarm output unit, monitoring cabinet and other components. Trong số đó, temperature sensing fiber optic is a key component with dual functions of temperature sensing and signal transmission. The temperature measurement host needs to be connected to surrounding equipment to build a comprehensive temperature monitoring and early warning system. Trong hệ thống này, real-time monitoring of spatial temperature changes and distribution patterns can be carried out, and timely fire warnings can be issued in case of fire. It has the advantages of wide temperature measurement range, multiple temperature measurement points, flame and explosion prevention, chống nhiễu điện từ, và độ chính xác đo cao. When connected to fiber optic transmission devices, it can monitor equipment temperatures within tens of kilometers.

Chức năng của hệ thống đo nhiệt độ sợi quang cho cáp đường hầm

các cáp quang phân tán temperature measurement system can achieve online temperature monitoring, intelligent control, giám sát và cảnh báo sớm, automatic alarm and other functions, ensuring the safe passage of trains in railway tunnels and avoiding fires. The system needs to be connected to a management workstation. When the fiber optic temperature measurement host in the system detects temperature information, it can immediately upload the information to the management workstation to achieve full process monitoring of temperature changes. Đồng thời, the cable fiber optic temperature measurement system in railway tunnels also needs to be connected to a fire alarm controller. When the system detects a fire signal, it can quickly transmit the signal to the fire alarm controller, which will issue an alarm. The cable fiber optic temperature measurement system utilizes advanced technology and features a distributed structure, which can improve the reliability of temperature measurement results and facilitate daily operation and maintenance.

Characteristics of fiber optic temperature measurement system for tunnel cables

1. Giám sát phân phối
The cable distributed fiber optic temperature measurement system has various forms of distributed temperature measurement functions, such as point type temperature measurement and linear temperature measurement. It can dynamically and continuously monitor temperature and fire information in the monitoring area, meeting the requirements of online simultaneous temperature measurement for railway tunnel electrical equipment.

2. Accurate monitoring
The system can accurately measure a certain detection point at any time node, ensuring accurate temperature measurement positioning and measurement results.

3. Accident judgment
The system can make judgments on the type, vị trí, and degree of harm of accidents based on monitoring results, accurately distinguishing types of accidents such as anomalies, quá nóng, and fires, making it easy to make corresponding decisions and deployments according to the type of accident.

4. Automatic alarm
The system can set alarm values for different fixed temperature points, as well as differential temperature alarm values. Nếu như 60 oC, 70 oC, Và 85 ℃ can be set to different alarm levels. The system can also set different alarm forms in each alarm control area, such as an initial alarm of 30 oC, a pre alarm of 40 oC, and a measure activation of 50 oC. In the alarm output, different colored sound and light effects can be set, and alarm information can be output through relays, communication lines, and other paths.

5. Fire analysis
Real time detection of temperature changes in the fire area, prediction of the direction of fire spread, smoke spread, and fire development speed, providing decision-making basis for disaster relief command departments to quickly extinguish the fire, reduce casualties and property losses.

6. Multi channel fiber optic interface
The system can meet the temperature measurement needs of the star shaped structure monitoring area by deploying temperature sensing optical fibers in various directions from the fiber optic temperature measurement host, realizing the connection of multiple temperature sensing optical fibers to the same host, reducing the investment cost of laying temperature sensing optical fibers back and forth, and achieving the goal of outputting temperature measurement information through multiple optical paths.

7. Strong applicability

Temperature sensing optical fibers have a long service life, strong corrosion resistance, khả năng chống cháy, chống cháy nổ, kháng bức xạ, chống nhiễu điện từ, chịu nhiệt độ cao, and other characteristics, which can enable the system to operate for a long time without the need to replace optical fibers. Đồng thời, it can also ensure the temperature measurement accuracy of the system under toxic and harmful harsh conditions.

8. Freely set parameters
các distributed fiber optic temperature measurement system of FJINNO can set the temperature rise rate, adjust the temperature rise change function, and intelligently adjust temperature parameters according to environmental conditions. The system has strong compatibility and provides multiple relay output interfaces, which can be connected to the central alarm system and automation equipment. The number of output relay modules can be set according to the needs of fire engineering, and the signal can be transmitted to the equipment. The alarm system sets a threshold to determine whether an alarm is needed. Đồng thời, the system also has programming function, which can program alarm points and areas according to the monitoring area situation, accurately locate the damaged points of the optical cable, and facilitate timely troubleshooting.