? (1) Precautions for installation of hanging net:
The installation methods of barbed wire mainly include straight line and parallel line.
Installation of vibrating optical fiber hanging net
When laying optical cables on wrought iron fences, the number of vibration sensing optical cables should be increased because of the hardness of wrought iron, so as to ensure that intrusion signals can be reliably sensed. By analyzing the action characteristics of intruders crossing the fence, it is suggested to lay vibration sensing optical cables along the horizontal iron railings at the top, middle and bottom of the wrought iron fence.
When installing the ring-shaped iron net, attention should be paid to fixing the optical cable on the outside of the fence near the bottom of the ring-shaped iron net, and laying the optical cable on both sides of the fence if necessary.
(2) When installing the wall, the construction personnel can lay two optical cables in parallel on the wall. The height of the fence shall not exceed 2m, and the optical cable shall be fixed at 0.5m and 1.5m from the ground. When the height of the fence is more than 2m, an optical cable shall be added for every increase of 1m, and the optical cable shall be horizontally fixed in the middle of the area. In order to ensure that the vibration sensing optical cable can sense the vibration generated when the wall is cut, it is necessary to ensure that the wall is firm, the bricks cannot be loosened, and the optical cable should be close to the wall. Clamp can be used to fix every 50 cm.
(3) attention should be paid to buried installation
No heavy trucks can pass through the main road within 20 meters near the defense zone.
There can be no roads with shock absorption belts near the defense zone/within 0/0 meter of Kloc.
In order to prevent heavy rain from washing away the coating on the surface of the optical cable, the protection zone should be flat and the inclination angle should be less than 15 degrees.
There should be no trees more than 10 meters high near the defense area.
There should be no vibration sources such as culverts and pipes under the protected area.
Plants on the ground should be pruned regularly to avoid wind vibration and hiding animals. Lawn is generally not higher than 15cm.