Fiber Monitoring Technology: New Security Monitoring Technology Application

The outstanding features of this type of monitoring technology include:

1. It is concealed and easy to lay. The optical fiber itself is a linear flexible medium, which can be concealed and disposed non-destructively in a variety of environments and regions. The layout is flexible and free, and can fully complement the perimeter alarm, channel alarm and space alarm of the Wenbo security system. Review the defense line. Its concealment also greatly reduces the vigilance of intruders on security equipment.

2. It has outstanding anti-destructive properties. It is precisely because the optical fiber adopts the method of concealed layout, and the technical principle is also confidential. Unlike traditional technologies such as camera and infrared arresting line, it is easy to identify, avoid and destroy. At the same time, the optical fiber probe has no electromagnetic radiation and is more resistant to electromagnetic waves. Interference, common detection devices based on electromagnetic and metallic effects are difficult to find fiber optic probes. Therefore, fiber optic monitoring technology is extremely low in evasion and damage, and is extremely resistant to damage.

3. The optical fiber has the advantage of long non-relay transmission distance, and has low energy dependence. The sensor network deployed in the entire monitoring area does not require power supply, thus greatly reducing the potential safety hazard of electronic equipment to wood or other material structures. risks of. Moreover, the system that does not need power supply on site does not have to worry about the security system caused by the power failure.

4. Unlike the gaps that are generally avoided by linear or physical blocking detection systems, the optical fiber sensing network uses a three-dimensional cooperative sensing function, like a huge neural network, to make voices from above ground, underground and space. Picking, can accurately perceive the movement and sound of the entire layout area, comprehensively carry out intrusion detection of environmental changes, and accurately analyze and judge through intelligent behavior analysis and pattern recognition, and eliminate environmental impacts that may generate false alarms, and ensure The system makes high-accuracy notifications and alarms.

5. The fiber itself is a non-metallic passive device. It is not afraid of lightning strikes. It does not corrode in the natural environment, is not afraid of rain and snow, and can even be used in humid and water environments. At the same time, the fiber sensor has no energy dissipation and will not become a heat source. It is suitable for flammable and explosive places and meets high-level fire protection requirements. It is very suitable for Wenbo, an important place with high security level and special security requirements.

6. Optical fiber voice monitoring is not subject to various electromagnetic interferences, and does not generate currents and electrical signal noises commonly found in electronic eavesdropping devices, and can restore the sound of the monitoring scene with high fidelity and no time delay.

7. The fiber-optic monitoring technology does not conflict with the existing video, infrared and other systems, and can be used interchangeably. The real implementation touches, hears and sees.

At present, there are also series of fiber monitoring technologies in China. Around 2000, research institutes such as Fudan University began research and development of optical fiber dynamic monitoring technology. In 2005, fiber-optic detection and alarm products were put into trial use. Based on fiber optic dynamic sensing technology, and successively, a series of products such as fiber intrusion vibration detection, fiber optic voice monitoring, optical fiber line security monitoring and fiber optic pipeline safety monitoring are available, which have outstanding features.

This type of system requires a combination of optoelectronics, materials, physics, electronics, communications, computers and other disciplines. Generally, research institutes with deep technical backgrounds are required to conduct research and development. At present, China's completely independent research and development, the technical route belongs to the international original technology has filled the domestic gap, and fully overtake the similar technology abroad. A number of technical achievements have reached the international leading level in theory and technology. The national ministries and commissions, the science and technology departments of some provinces and cities, including some industry authorities, have begun to take the lead in further deepening and applying this technology. The technology products were successfully put into use during the Olympic Games and the World Expo.