The maximum arming distance of a distributed vibrating fiber varies depending on the system design and actual needs, but in general, it can cover a range of tens of kilometers to meet a variety of long-distance security needs. This wide coverage makes distributed vibrating fibers ideal for monitoring large areas such as oil pipelines, railways, highways, and other infrastructure.
As for the principle of accurately locating the alarm position, it mainly depends on the working principle of distributed vibrating optical fiber and advanced signal processing technology.
The working principle of distributed vibrating optical fibers is based on optical fiber sensing technology, which uses the scattering and interference principle of optical signals in optical fibers to detect external vibrations. When an optical fiber is affected by external vibrations, the characteristics of the light transmitted in the optical fiber (such as attenuation, phase, wavelength, etc.) will change. By configuring special sensing equipment, these changes in light characteristics can be detected.
The alarm controller performs a special algorithm and analysis on the detected changes in light characteristics. These algorithms can distinguish between third-party intrusion behavior and normal interference, so as to achieve accurate identification of abnormal events. As soon as an abnormal vibration event is identified, the system immediately triggers an alarm mechanism.
In order to accurately locate the alarm location, the distributed vibration fiber optic system adopts advanced signal processing technology. By performing spatiotemporal analysis and pattern recognition of the collected vibration signals, the system can determine the specific location of abnormal vibration events. This positioning technology is usually highly accurate and can provide strong support for emergency response.
The distributed vibrating fiber optic system also has the function of real-time monitoring. The system collects and analyzes data in real time, and alerts when abnormal vibrations are detected. This real-time monitoring capability enables the system to detect and respond to potential security threats in a timely manner.
To sum up, the distributed vibration optical fiber system can realize real-time monitoring and accurate positioning and alarm of abnormal vibration in a long distance through optical fiber sensing technology and advanced signal processing technology. This makes it have a wide range of applications in a variety of security fields.