Distributed optical fiber vibration monitoring system (HDVS)
The core technology of the distributed optical fiber vibration sensing monitoring system is the self interference technique of optical fiber laser, that is, the laser light source is injected into the optical fiber.
The light pulse, most of the incident light travels to the end of the fiber and disappears, but the part of the backscattered light travels back along the fiber.
The backscattered light (coherent Rayleigh scattering light) is sensitive to the vibration, and the whole fiber can be obtained by processing the real-time signal analysis.
The vibration curve is used to achieve the purpose of real-time vibration monitoring. The system can carry out full line, continuous, distributed measurement of the monitoring objects,
Positioning, monitoring and alarm.
(1) optical fiber cable. According to the actual situation of the measured objects, the optical cable and the measured object are laid out correspondingly and the objects are vibrate through the optical fiber cable.
Real time perception.
2. Sensing host. Completion of laser emission, reception, data acquisition, data analysis and processing to form each point of the measured object vibration and position
Information, and local graphical display, analysis, alarm.
3. Comprehensive monitoring and management platform. All kinds of applications for safety early warning of measured objects are completed.
Distance length measurementHigh measurement precisionQuick responseWide range of measurement
Hierarchical alarm modeFull line, continuous and distributed measurementStrong ability to resist electromagnetic interference
40km ( depending on type of fiber)
Number of channels
Sensing optical fiber
Single mode and multimode
energy level alarm
Fiber optic joint
0～95%R.H Non condensation
Oil and gas pipeline excavation, theft and mining early warning