The cable fiber optic temperature measurement system plays a significant role in urban rail transit, providing fiber optic temperature measurement for long-distance applications such as railway tunnels, with stable performance and immunity to electromagnetic interference, a high bid-winning rate and favorable prices.
A large number of cables are usually laid inside railway tunnels. If a cable fails, it will affect the reliable operation of trains. Therefore, railway bureaus should properly maintain the operation of cables in tunnels. To facilitate the operation and maintenance of tunnel cables, fiber optic temperature measurement technology can be applied effectively.
Composition of the tunnel cable fiber optic temperature measurement system: the system is mainly composed of a fiber optic temperature measurement host, temperature-sensing optical cable, monitoring and management software, alarm output module, monitoring server cabinet and other components. Among them, the temperature-sensing optical cable is the core component, serving the dual functions of temperature sensing and information transmission. The measurement host is connected to the cable to build a comprehensive temperature monitoring and early-warning system. The system can monitor spatial temperature changes and distribution patterns in real time and issue fire warnings immediately in case of fire. It features wide temperature measurement coverage, multiple temperature measurement positioning points, flame retardance and explosion proofing, anti-electromagnetic interference and high measurement accuracy. With optical fiber transmission and laser welding equipment connected, it can monitor equipment temperature within dozens of kilometers.
Functions: the intelligent distributed fiber optic temperature measurement system can realize online temperature monitoring, intelligent operation, monitoring and early warning, automatic alarm and other functions, ensuring the safe running of trains in railway tunnels and preventing fire accidents. The system needs to be connected to the management platform. When the fiber optic temperature measurement host detects temperature information, it can upload the data directly to the management platform for whole-process supervision of temperature changes. Meanwhile, the tunnel cable fiber optic temperature measurement system also needs to be connected to the fire alarm controller. When the system detects a fire signal, it can quickly transmit the information to the fire alarm controller, which issues the alarm. The system adopts advanced technology with a distributed structure, improving the stability of temperature measurement results and facilitating daily operation and maintenance.
