With the continuous improvement of wireless technology, the application fields of wireless video surveillance systems are becoming more and more extensive. Here, Tengyuan Zhituo Xiaobian based on 12 years of experience in the wireless monitoring transmission equipment industry, to enumerate the points that the wireless video surveillance system needs to pay attention to during installation.
1, monitoring objects
The monitoring object determines the framing range, the camera position, and the type of camera required. The monitoring object has subtle maps and general observation maps. Subtle images work well for identifying people or specific targets, such as: faces, documents, and storefront monitoring; the general view is mainly to monitor the entire scene or the approximate flow of the scene. The monitoring target determines the viewing range, camera position and the type of camera required.
2, monitoring range
The range of HD network cameras and the number of HD network cameras can be determined for different coverage areas. In a project, the choice of lens is very important, it depends on whether it can cover the range that customers need to watch.
3. Monitoring environment
Because the light is different indoors and outdoors, it is necessary to consider the sensitivity and lighting effects. In the outdoor environment, you can use infrared light, and some need to use the day and night dual-use surveillance cameras; if it is indoor, you don't have to think about it so much, just consider the lighting effect. In addition, if you are outdoors, you must consider the relevant factors of dust, moisture, water and damage. For example, in a dark environment, a camera with low illumination function can be used, and a wide dynamic function camera can be used in an environment with uneven light distribution. A professional license plate function camera can be used in a bayonet environment, and an elevator can be used in an elevator environment. Camera and so on.
4, the choice of aggregation switch
The national standard super five network cable can be used between the IPC and the front-end switch, and the national standard six-class network cable and six-class crystal head must be used between the front-end switch and the main switch of the equipment room. Our current projects basically use fiber optic transmission, single mode and multimode, free to choose. Optical transceivers or optical modules, free to choose
5, the core switch selection
Be sure to choose the full-gigabit switch of the big brand, and must not be fully loaded. For example, the 24-port full Gigabit switch should not use more than 20 ports when it is actually used, because the network HD monitoring data volume is relatively large and it is constantly transmitting data. The processing requirements of the switch are relatively high. If there is a delay and a stuck phenomenon when a switch has many points, you can try to add a switch to solve it. As for the core switch with no routing function, choose as needed.
6, the choice of access switches
The actual bandwidth of our commonly used switches is 50%-70% of the theoretical value, so the actual bandwidth of a 100M port is 50M-70M. 4M*12=48M, so it is recommended that one 100M access switch can access 12 720P network cameras. At the same time, considering the current network monitoring using dynamic coding, the camera stream peak value may exceed 4M bandwidth, and considering the bandwidth redundancy design, so one 100M access switch is controlled within 8 units, and more than 8 units are recommended to use Gigabit ports.
7, write the address in advance
The IP addresses of all network domes, network cameras, NVRs, computer masters, storage servers, streaming media servers, HD decoders, and management servers in this system must be uniformly modified and registered before construction. The original devices (such as computers and network printers) on the local network have IP address conflicts. All equipment addresses must be drafted, and the address of the camera should also be marked on the drawing for easy maintenance by after-sales staff.
8, the choice of network cable
IPC to the front-end switch can use the national standard super five network cable, and the six types of network cable are gradually applied to the security system.
9, data encryption security
Some need to consider HTTPS encryption through the network after encrypting the video stream, IP address filtering to allow or deny access to the defined IP address, IEEE802.1X, IPv6 and wireless functions to control network access. Of course, these functions are not needed in general.
10, covert surveillance
Because some places need to cover hidden million HD network cameras for some specific reasons. Therefore, in this regard, it is necessary to consider the selection of non-concealed or concealed surveillance cameras.
More wireless video monitoring knowledge, you can consult Tengyuan Zhituo customer service, if there is a need for wireless monitoring projects, our technical staff will develop a complete set of wireless video monitoring solutions for users according to the specific needs of users.