In addition to electronic fences, the perimeter project also includes vibrating optical fibers. Vibrating fiber is a special alarm system in perimeter prevention. What is the working principle of vibrating fiber? What are the unique advantages?
1. Working principle of vibrating optical fiber
Vibrating optical fiber is a high-end alarm system in the perimeter alarm system. It is different from the interrupted beam alarm of infrared beams, and it is also different from the pulse electronic fence that touches the alloy wire to generate an alarm. Its working principle is that the laser emits a DC monochromatic light wave. The signal passes through the optical cable through the optical module to generate two interference signals for the optical signal. The signal uses optical fiber as a vibration sensing carrier to realize protection and early warning detection. When someone illegally invades, the intensity of the light wave signal is higher than a predetermined index, thereby generating an alarm signal.
2. The composition of the vibrating optical fiber system
Alean vibrating optical fiber is mainly composed of defense zone collector, terminal box, defense zone split package, fiber jumper, etc. According to different projects, different defense zone collectors will be used. The defense zone collectors can be divided into dual defense zones, four defense zones, and eight defense zones. Wait.
A. Composition of dual-zone vibration optical fiber system
B. Four-defense zone vibration optical fiber system composition
C. Composition of vibrating optical fiber system in eight defense zones
3. Four alarm methods
After talking about its working principle and system composition, let's take a look at the alarm mode of vibrating optical fiber during actual operation, which can be divided into the following categories:
Intrusion alarm: directly or indirectly cause vibration
Wire break alarm: sensor optical cable break
Disassembly alarm: illegal disassembly or destruction
Communication failure: the communication optical cable is disconnected
4. Three installation methods
Unlike electronic fences and infrared beams that are installed on walls or fences, there are some special installation methods for vibrating optical fibers, including three methods such as underground burying, hanging nets, and burying walls.
