Recently, the distributed single-fiber multi-parameter monitoring and sensing system developed by Professor Dong Yongkang's team from the School of Aerospace Engineering at Harbin Institute of Technology has been successfully applied to the monitoring and early warning of threat events in actual long-distance oil and gas pipelines. The review committee organized by the National Pipeline Network Group unanimously concluded that this achievement meets the requirements for on-site application.

Oil and gas pipelines are a crucial component of the energy supply system, and their safe and efficient operation is vital to national energy security. Currently, China has preliminarily established a backbone pipeline network that spans east to west, north to south, covers the entire country, and connects overseas. However, oil and gas pipelines are characterized by numerous points, extensive routes, and vast coverage areas, traversing regions with high population density and particularly complex natural and social environments, making them highly susceptible to various safety incidents along the way. Traditional warning methods such as manual inspection and video surveillance suffer from significant monitoring blind spots and poor real-time performance, failing to meet the modern pipeline safety management requirements of "pre-incident warning and in-process control." Distributed optical fiber sensing technology, with its inherent safety, electromagnetic interference resistance, spatially continuous measurement capabilities, and long monitoring range, is the most suitable, efficient, and real-time oil and gas pipeline safety monitoring technology.

To address the urgent need for monitoring threats to major national infrastructure such as long-distance oil and gas pipelines, Professor Dong Yongkang's team proposed a distributed multi-dimensional information sensing scheme that integrates Brillouin scattering and Rayleigh scattering. By effectively separating the signals from these dual scattering mechanisms, the system achieves simultaneous measurement of temperature, strain, vibration, and acoustic waves on a single optical fiber.

With the support of national key research and development programs and the National Natural Science Foundation of China, Professor Dong Yongkang's team has dedicated years to the research, application, and commercialization of high-performance distributed optical fiber sensing technology. They have achieved a series of breakthroughs—from cutting-edge key technology research to the development of high-performance instruments and ultimately large-scale industrial applications. These accomplishments have been successfully applied to numerous major national strategic projects, effectively supporting and safeguarding China's energy security.