Network monitoring installation camera point planning reference

If you want to solve the problem caused by monitoring the dead angle, you should consider the camera position when designing and installing. So, how to plan the camera position in a completed monitoring system?

First, the planning of monitoring points

In the usual monitoring system, we combine the existing monitoring points according to the characteristics of key areas, and propose the planning ideas of “encirclement, supplement, connection and cooperation” according to the actual needs of the war:

Wai:

As the name implies, the target area is enclosed to form a closed circle. The first is to control all intersections entering and leaving the city, the second is to control all entrances and exits in the main city, and the third is to control the entrances and exits of the local jurisdictions to ensure 100% effective coverage of the main entrances and exits, and to obtain clear images of any people, vehicles, objects and other targets that come in and out; Effective coverage is achieved at all access points.

even:

Control all key parts, key places, key parts around the entrance and exit, combined with the distribution of surrounding cameras in accordance with the main urban roads into a line, connected into a circle, forming a number of interconnected closed circles, to ensure that the moving target can be captured multiple times.

Make up:

Complementary points for all kinds of closed loops: ensure that the target must pass through the closed loops of each layer to achieve clear coverage, and reasonably plan the closed loops of overlapping overlapping areas of each jurisdiction to avoid repeated construction and leakage construction.

In the closed circle, it is mainly in the closed circle of the police station. The monitoring points of the classified key units, key places and key parts are added, especially in the areas where the case is high, and the camera type is selected according to the actual situation.

Combined:

Integrate social resources and give play to the auxiliary role of social resources in public security prevention and control. In particular, the video resources of closed and closed key units should be fully utilized to form a powerful complement to the closed circles of each layer.

Second, the installation principle

1. Selection of pole position when considering environmental factors

(1) The distance between the pole point and the pole point is not less than 300 meters in principle.

(2) In principle, the position of the pole should be no less than 5 meters from the monitoring target area, and the longest distance should not be more than 50 meters, so as to ensure that the monitoring picture can contain more valuable information.

(3) Where there is a light source nearby, it is preferred to use the light source. However, be aware that the camera should be installed in the same direction.

(4) Try to avoid installation in places with high contrast. If it is necessary to install, consider:

1 Turn on the exposure compensation (the effect is not obvious);

2 using a fill light;

3 Set the camera of the underpass outside the entrance and exit;

4 Set a little inside the channel.

(5) Position the pole as far as possible to avoid green trees or other obstructed objects. If it is necessary to install, consider avoiding the obstruction of trees or other obstructions, and leave room for future growth of trees.

(6) Pay attention to the survey, try to get electricity from the traffic signal, the street lighting distribution box, the government, the larger enterprises, institutions (such as: government departments, bus companies, water supply groups, hospitals, etc.) to facilitate coordination. Improve the stability of electricity consumption. Try to avoid small business users to take power, especially for civilian use.

(7) The gun mounted on the side of the road, pay attention to the reverse shooting of pedestrians, the facial features of non-motorized roads.

(8) The camera installed at the bus station should be placed in the rear of the vehicle as far as possible to avoid the headlights of the vehicle and facilitate the capture of the boarding personnel.

2, the choice of poles for different cameras

Reasonable selection of the rods, to avoid the camera being blocked in the selection of the social security monitoring rods, according to different camera types, try to choose the height of the manuscript to meet the ideal monitoring effect: the height between 3.5-5.5 meters can be used as the selected height .

(1) Selection of the height of the gun camera

For the selection of gun-type camera poles, try to select the type of rods with relatively low height, usually choose the pole with a height of 3.5-4.5 meters.

(2) Selection of the height of the dome camera

The dome camera can be rotated 360 degrees, and the focal length is adjustable. The selection of the rods of all spherical cameras should be as high as possible. Usually we choose the type of rods between 4.5 and 5.5 meters.

For the above-mentioned rods of various heights, a reasonable cross arm length should be selected according to the distance between the position of the pole and the position of the monitoring target and the viewing direction, so as to avoid that the cross arm is too short to capture suitable monitoring content. In an occluded environment, 1 meter or 2 meters of cross arm should be chosen to reduce occlusion.