ZITN High-Precision Distributed Optical Fiber Acoustic Sensing (DAS) System is a new type of sensing technology that enables continuous distributed detection of vibration and acoustic fields. ZITN High-Precision Distributed Temperature Sensing (DTS) utilizes the characteristic that coherent Rayleigh scattering, excited by a narrow-linewidth single-frequency laser in an optical fiber, is highly sensitive to strain. Combined with the principle of time-domain reflectometry, it performs real-time dynamic monitoring of tiny changes caused by vibration and acoustic field information in the environment around the optical fiber. This enables it to feed back acoustic field information and vibration changes along the optical fiber path, providing an efficient, sensitive, and reliable testing method for applications such as oil well logging and pipeline monitoring.
link:https://www.zitn-electronics.com/fiber-optic-imaging-logging-system/distributed-acoustic-sensing-system-das.html