With the continuous growth of global energy demand, the safety and operational efficiency of oil and gas pipelines have become increasingly important. Traditional pipeline monitoring methods have certain limitations, making it difficult to achieve real-ti

Perimeter security is playing an increasingly important role in modern security management systems.

With the continuous expansion and improvement of the high-speed railway network, safety and reliability have become the primary tasks in ensuring high-speed rail operations.

Bridges, as vital components of transportation infrastructure, bear substantial traffic loads, particularly within highway, railway, and urban transportation networks.

With the development of lightweight and increasingly complex industrial infrastructure, the demand for online, continuous, and high-spatial-resolution temperature and strain monitoring is growing exponentially. Traditional point-sensing techniques, such as electrical resistance strain gauges and thermocouples, exhibit significant disadvantages in terms of coverage area and deployment costs, making them inadequate for long-distance, large-scale, detailed monitoring requirements. Optical fiber sensing, leveraging its advantages in simplified cabling, immunity to electromagnetic interference, and capability for long-distance coverage, has become the preferred technology for scenarios including Structural Health Monitoring (SHM), oil and gas pipeline leak and temperature monitoring, wind turbine blade/composite material testing, and civil engineering (bridges and tunnels) monitoring.

The pipeline leakage online monitoring system, based on DAS (Distributed Acoustic Sensing) technology, utilizes optical fiber as a continuous distributed sensing unit. It achieves "comprehensive coverage, real-time operation, and high-precision" perception of the operational status along the pipeline route. The system can immediately capture abnormal acoustic/vibration signals and perform localization during the early stages of a minor leak, providing maintenance personnel with minute-level warning capability. This effectively reduces leakage risk, environmental pollution, and economic losses.