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Many friends often encounter problems when they monitor. There are choices about the switch, about the distribution of IP addresses, and also about the network cable. These are the problems in the VIP group and behind the message in our weak current industry network. Then the following 18 questions are relatively common solutions. Other questions can also be added.
18 things that should be noticed in HD surveillance system construction!
Switch selection:
More than 8 points (including 8 points more than 720P) Please use full gigabit network switch.
The actual bandwidth of our commonly used switches is 50%-70% of the theoretical value, so the actual bandwidth of a 100Mbit is 50M-70M. 4M*12=48M, so it is recommended that a 100M access switch should have access to a maximum of 12 720P network cameras. At the same time consider that the current network monitoring using dynamic encoding, the camera code stream peak value may exceed 4M bandwidth, while taking into account the bandwidth of redundant design, so a 100M access switch to control the best within 8 units, more than 8 units recommended Gigabit mouth.
Make a backup:
Before the construction, the IP addresses of all network domes, network cameras, NVRs, computer masters, storage servers, streaming media servers, high-definition decoders, and management servers in the system must be uniformly modified and registered, and care must be taken to avoid The original equipment in the local network (such as computers, network printers) has IP address conflicts.
Do a good job registration:
All devices in the network system (including the original device) should not be set to automatically obtain the IP address mode. All the IP addresses are manually set and the registration table is registered.
Note IP conflicts:
If there is a wireless router in the network system, please note whether there is a conflict between the IP address of the mobile phone and tablet in the wireless network system.
Note the aggregation layer switch selection:
The number of single-end IPCs connected to the front-end switch does not exceed 4, and 8-port 100-Mbit/s switches can be used. If more than 4 ports, please use 8-port full-Gigabit switches because the front-end switch uses only one network cable between the main switch and the main room. Transmission, if there are too many IPCs in the load, packet loss, frame dropping, delay, and stalling may occur.
Note network cable selection:
IPC to the front-end switches can be used between the national standard super five cable, and the front-end switches to the main room of the machine room, please use the national standard six types of cable and six types of crystal head.
Note the distance between the camera and the control room:
HD network domes, high-definition IPC can only use the network switch to relay once between the main switches; if the distance is greater than 100 meters, the optical fiber can be used. Please use one light, one power, one light, two power, or one light and four power for receiving and transmitting. Yi-Ling fiber optic transceivers.
Note the choice of wire:
If the network dome camera, network camera, or front-end switch adopts an international Super Category 5 shielded network cable, it is recommended that the length of the cable should not exceed 80 meters. If using an international Category 6 network cable, it is best not to exceed 100 meters.
Try not to select managed switches:
In the general case of the equipment room main switch, please do not choose the switch with management type, unless there is an engineer skilled in setting up the management switch, or the system is relatively large.
Main switchboard in the equipment room:
Be sure to choose the full brand Gigabit switch of the big brand, and must not be fully loaded. For example, if you use a 24-port full Gigabit switch, do not use more than 20 ports in general because the data volume of the network high-definition monitoring is relatively large and the data is continuously transmitted. The processing requirement for the switch is relatively high. If a phenomenon occurs that delays or staggers occur when a switch has many points, you can try to solve it by adding a switch.
Network monitoring project scope:
The scope of coverage can be different to determine the type of HD network camera and the number of HD network cameras. The type has 1MP(1/4Sensor)/1.3MP(1/3Sensor)/2MP(1/2.7Sensor)/3MP(1/2.5Sensor), in a project, the matching of the lens is very important, it depends on whether can Full coverage of the customer needs to watch.
Network monitoring engineering object:
The monitoring object determines the viewfinder range, camera position, and the type of camera required. The monitoring object has sub-micrographs and general observations. The subtle images are effective for identifying people or specific targets, such as: people's faces, certificates, and sales storefront monitoring; the general observation chart is mainly to monitor the flow of the entire scene or scene. The monitoring target determines the viewing range, the camera position, and the desired camera type.
Because indoor and outdoor light is not the same, consider the sensitivity and lighting effects. In the outdoor environment, infrared light can be used, and some need to use dual-use day and night surveillance cameras; if it is indoor, then generally do not have to consider so much, then just consider the lighting effect just fine. If you are outside, you must consider the factors related to dust, moisture, water, and vandalism. For example, in a dark environment, a camera with a low illumination function can be used, a wide dynamic camera can be used in a non-uniform light distribution environment, and a professional license plate function camera can be used in a bayonet environment, and an elevator can be used in an elevator environment. Cameras and so on.
Is it possible to publicly monitor:
Because some places take into account some specific reasons need to install hidden million HD network cameras. Therefore, in this respect, it is necessary to consider the selection of non-hidden or concealed surveillance cameras.
Intelligent Video and Event Management:
The video is recorded based on the event trigger through the input port of the network video product and the intelligent video function, which saves bandwidth and storage space. Unless an alarm/event occurs, it is not necessary to perform on-site monitoring of all the monitoring cameras, so the operator can monitor more cameras. Event management functions are often configured using event management software programs, supported by the input/output ports and smart video capabilities of millions of HD webcams or video encoders.
Network Monitoring Engineering Audio Features:
This is also a matter of considering where you use it. If you need to use millions of HD IP cameras with audio capabilities, you have to consider connecting headphones or speakers, microphones, and other devices.
Image quality:
The quality of millions of high-definition webcams is just as important as an ordinary surveillance camera. In this regard, you can only use the installation of different million HD network cameras to observe the effect and choose a more suitable one million HD network cameras. It is advisable to have a prototype before the installation to test the customer and perform the batch installation with the final customer's choice.
Pay attention to the number of routers during remote monitoring:
If you use a multi-layer router that can penetrate IPC, you do not need to consider this consideration. For example, if you can only penetrate one layer of routers, then you need to consider this when doing remote operations.
October 01, 2024