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Distributed optical fiber vibration monitoring system (HDVS)

Product introduction

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.

System composition

  • (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.

Product features

Distance length measurement High measurement precision Quick response Wide range of measurement

Hierarchical alarm mode Full line, continuous and distributed measurement Strong ability to resist electromagnetic interference

Product Parameters

Serial NumberProductIndex
1Product model HDVS-SM40K-1/2
2Measuring distance 40km ( depending on type of fiber)
3Number of channels 1/2
4positioning accuracy ≤+10m
5spatial resolution 10m
6Measurement parameters Vibration
7Sensing optical fiber Single mode and multimode
8response time ≤2s
9Alarm mode energy level alarm
10Fiber optic joint FC/APC
11power supply AC220/50hz(optional)
12working temperature -10~Forty℃
13Working humidity 0~95%R.H Non condensation
Application scheme

Oil and gas pipeline excavation, theft and mining early warning

Safety early warning of urban corridor

An important area of the security perimeter.