What are the application scenarios of vibrating optical fiber system?

In the case of our Shanghai Guangtuo Security Company, our vibration fiber optic perimeter alarm system has a wide range of application scenarios, including the following different kinds of scenarios.

Not suitable for live environments: oil depots, chemical plants, gas stations, schools;

Concealment: ** units, military installations, museums;

Long-distance: national large-scale water conservancy and hydropower projects, border lines, oil pipelines, gas pipelines, high-speed railways, subways;

Anti-electromagnetic interference: airports, air traffic control bureaus, television stations, radar stations;

Corrosion resistance: nuclear power plants, chemical plants, seashores;

Feitian laser active vibration optical fiber is a perimeter anti-intrusion technology based on optical fiber sensing technology, its distinctive feature is the use of optical fiber as a sensor to feel the external intrusion information, is widely used in the world, electricity, military, residential areas and other fields, in order to achieve the purpose of security precautions.

Working principle: Based on optical fiber sensing technology, optical fiber is used as a sensor to feel the external intrusion information. The sensing cable, the reflector, and the all-fiber interferometric module together form an interference structure, and the optical fiber perimeter realizes the acquisition of disturbance information through the interference structure.

The light enters from the input port of the all-fiber interferometry module, and the light processed by the optical fiber interferometry module is input to the sensing cable, and after being reflected by the mirror at the end of the sensing cable, it re-enters the sensing cable, and finally returns to the all-fiber interferometer module.

System Benefits. Independent vigilance.

Each defense zone analyzes the signal independently and operates independently, and the alarm does not affect each other when different defense zones are intruded.

The detection rate is 100%.

The cable is used as the sensing unit, and the computer is used to collect and identify the data and realize the detection of long-distance and large-scale defense areas, and the detection rate is 100%.

Super adaptability to the environment.

The background software can set the parameters of the surrounding environment, adapt to changes in the external environment, and can be applied to harsh environments such as wind and rain, low temperature, etc. And it is not subject to electromagnetic interference, nor electromagnetic radiation, and is not afraid of bad weather such as lightning strikes and lightning.

The false alarm rate is effectively controlled.

The false alarm rate of the system is controlled by powerful background software, and the intrusion signal is compared with the signal database of the system to analyze and judge whether it is a real intrusion signal, which can effectively shield interference signals such as falling birds and shaking branches.

Data is stored securely.

The data can be effectively stored, and the alarm information is set to the confidentiality level, the alarm equipment linkage is convenient and fast, the system realizes the linkage alarm function in the control room, and the alarm information can be processed and the linkage equipment can be started in real time.

The principle is based on optical fiber sensing technology, that is, optical fiber is used as a sensor to conduct external intrusion information and obtain intensity information through the mechanism.

Advantages: 1. It can be single or combined without affecting each other;

2. High detection rate;

3. The false alarm rate is controllable;

4. Good environmental adaptability;

5. It can be networked with computers.

The working principle of the vibrating fiber is to emit a DC monochromatic light wave from the laser, which is coupled into the two-core sensing fiber along the forward and reverse directions respectively through the fiber coupler to form a forward and reverse loop Mach-Zeid interference optical signal; When the optical fiber is disturbed by external vibration along the line, it will cause the phase change of the light wave in the optical fiber transmission, and form the phase modulation sensing signal of the optical signal based on the double-ring Mach-Zeid interference, which is transmitted to the photodetector through the optical fiber coupler and optical circulator to detect the change of light intensity of the interference optical signal and realize the optical fiber vibration alarm.