Our Distributed Temperature Sensing (DTS) system is based on two core technologies: the Optical Time Domain Reflectometry (OTDR) principle and the Raman scattering temperature effect. Together, they enable accurate, real-time temperature measurement along the entire length of a standard optical fiber.
Key Features
- Real-Time Temperature Monitoring: Utilize the DTS system to continuously collect temperature data along the entire length of the underground cable, ensuring complete coverage with no blind spots.
- High-Precision Alarm Localization: Enable rapid and accurate identification of temperature anomaly zones with a resolution as fine as 1 meter, meeting the needs of diverse field environments.
- Robustness Against Interference: Deploy temperature sensing optic fiber cables with superior resistance to electromagnetic interference, mechanical shocks, corrosion, and high insulation pressure. These cables are designed for harsh environments, ensuring a service life of up to 30 years.
- Seamless System Integration: Equip the system with graphical monitoring software and open communication interfaces that support integration with fire alarm systems and other security platforms, thereby establishing a comprehensive safety network.
KEY WORKING PRINCIPLES
- OTDR-Based Spatial Localization
The system utilizes a laser source (typically at 905 nm) to inject light pulses into the optical fiber. While most of the light continues forward and attenuates over distance, a small portion is scattered and reflected back. By analyzing the time delay and intensity of this backscattered signal using OTDR techniques, the system precisely determines the spatial position of temperature events along the fiber. - Raman Scattering and Temperature Measurement
Within the backscattered light, a specific component—Raman scattering—is highly sensitive to temperature changes. The system applies advanced Digital Signal Processing (DSP) to isolate the Raman signals from other components and accurately interpret them as temperature values. This process results in a continuous, high-resolution temperature profile of the entire sensing fiber.
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