How to make a stable wireless remote monitoring system?
With the increase of market demand, there are all kinds of wireless video monitoring equipment in the market, with prices ranging from hundreds to thousands. In the whole process of wireless monitoring equipment marketing, the application of cost-effective machinery and equipment that has been tried before is unstable. The wireless bridge does not look at the appearance of the machine equipment. The key is to look at the main parameters and functions of the machine equipment. How to make a complete set of stable wireless monitoring system?
System software distribution
The distribution of the positioning points of the front-end development surveillance cameras determines how the front-end development wireless bridge is distributed. If several surveillance cameras can be centralized, people can centralize the data signals of several surveillance cameras before transmitting them. If not, people can use the method of several transmitting points and one receiving point to maintain wireless video transmission.
Transmission frequency
Frequency band: 2.4G frequency band is used more frequently, with more interference, and 5.8G frequency band is relatively clean.
Immunity:
2.4G diffraction has strong working ability and can spread far from the building;
The transmission distance is larger under the same output power of 5.8G, but the diffraction force is poor.
Main use: 2.4G for wireless network Coverage. Since most wireless network cards are in this frequency band, 5.8G is the transmission network bandwidth used for transmission.
The IEEE 802.11b/g specification works in the 2.4G frequency band, the frequency range is 2.400-2.4835GHz, and the total network bandwidth is 83.5M. It is divided into 13 height wireless channels, and the bandwidth of each sub channel is 22MHz. IEEE 802.11a works in the 5.8G frequency band, the frequency range is 5.725G - 5.850GHz, a total of 125M network bandwidth, each wireless channel 20MHz network bandwidth 802.11G transmission is 54M, 802.11N transmission rate can exceed 300M. Fill in the photo introduction (optional)
Transmission spacing
The transmission distance of wireless video monitoring machines and equipment is 1km, 2km, 3km, 5km, 10km, 20km, 30km, etc. Therefore, the distance between you and the goods you choose depends on which product you choose. The cost is undoubtedly different.
Focus standard
All wireless monitoring systems must be able to maintain wireless video transmission in a wide natural environment. If there is a blocking situation, people must transfer the data signals developed in the front end to the monitoring system according to the relay method, which can carry out the transfer several times. However, the transfer frequency increases with the increase of the frequency.
Transfer content
What data signal is the surveillance camera? If the surveillance camera is analog video camera , your front-end development will use simulation wireless monitoring equipment; If it is an Internet surveillance camera, your front-end development uses a wireless bridge to transmit, and the wireless bridge to transmit depends on the network bandwidth of your surveillance camera at first, and then people will select the right products for you according to your specific situation.
Equipment English
The price of each good wireless bridge should not be considered alone. The key is the configuration of the wireless bridge, the main parameters such as operating memory, flash memory, CPU, etc., as well as the function of the wireless bridge.
Damp proof and lightning protection
A complete set of stable wireless video monitoring system software not only lies in the selection of machine equipment for front-end development, but also has a great relationship with whether the moisture-proof and lightning protection countermeasures are made in your project. Especially, moisture-proof at the junction is a problem that many customers will ignore, and lightning protection is indispensable.
