With the improvement of people's security awareness, there are more and more monitoring practitioners. For newcomers who have just joined the industry, they may first start with the installation of the most basic monitoring equipment. Only by continuously accumulating experience and technology in practice can it be possible to stand alone and grow rapidly.
As a novice, the 4 transmission methods installed in the network monitoring system must be mastered. How to make a suitable design plan according to the customer's requirements and the actual situation of the site is related to our professionalism. Today, I will share with you 4 ways to install the network monitoring system, I hope to help you.
01. Network camera + power supply + network cable
In the case of integrated wiring, power cords and network cables must be laid at the same time. The power supply can also be 220V AC nearby, which saves power cords. The advantages and disadvantages of it are not discussed here. Provide power to each network camera. There is another network cable to transmit network data to the network hard disk video recorder NVR.
02, network camera + POE switch
This saves a power cord compared to the previous method. A network camera only needs a network cable as the signal transmission medium, and the power cord is no longer needed. The network cable can be unshielded Super Category 5 twisted pair, and the transmission distance is 100 meters without any problems.
Why do the mainstream use PoE switches as network monitoring systems now have the following advantages:
1. Save wires, save wiring time, save wiring labor, and improve engineering construction efficiency.
2. Without power supply, strong electricity is not involved, there is no danger of electric shock, failure probability is reduced, and maintenance cost is reduced.
3. Reduce the difficulty of construction, simple and convenient, easy to use, and the engineering wiring is more beautiful.
03. Network camera + optical fiber + transceiver
As we said earlier, the network cable transmission is within 100 meters normally, and if it exceeds 100 meters, we generally consider using optical fiber for transmission. Optical fiber not only has a long transmission distance (20 kilometers can be transmitted), but also has a stable effect.
We all know that when optical fiber transmits data, the data signal is converted into optical signal for transmission, and then the optical signal is converted into data signal, so that we use optical fiber transceiver to complete the work.
Optical fiber is cheap and has long transmission distance, so it is widely used in monitoring projects. However, the optical fiber needs to be spliced, and the splicing equipment is expensive, so in general splicing needs to be carried out by a special person, which requires a certain cost and a certain time. Fiber optic transceivers are divided into 100M and Gigabit, which can be selected according to the number of cameras.
04. Camera + wireless bridge
In the specific monitoring system implementation environment, if the wiring difficulties encounter natural barriers or insurmountable obstacles, we can use the wireless transmission method, so that the wireless bridge is used.
For example, in communities with hardened roads, elevators, already-built factories, open areas with long distances, and the field, wireless transmission is applicable.
A wireless bridge can convert network signals into radio waves for point-to-point transmission. Used in pairs. Due to the point-to-point directional transmission, long-distance wireless transmission can be realized, from hundreds of meters to tens of kilometers.
Points for attention in the construction of using wireless bridges: There must be no obstruction or obstacles between the transmitting and receiving ends. This way the signal transmission will be stable.
The above four methods are the four commonly used transmission methods for network monitoring systems. When we are doing specific monitoring projects, we must choose the most suitable transmission method according to the on-site environment and the requirements of the owner, so that the owner can The least economic expenditure does not affect the monitoring project effect.
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