Video surveillance can not be ignored: wireless transmission

Whenever the security industry mentions development trends, the word with the highest frequency must be high-definition, digital, and intelligence. This is already recognized as the three development trends. However, in the process of realizing high-definition, digitalization, and intelligence, video wireless transmission plays a role as a bridge, and the convenience and flexibility of wireless transmission link the three to achieve the application in the security industry.

With WIFI , WIMAX , 3G and other wireless broadband access technologies, covering the entire city or major areas of the city, providing broadband wireless access services for individuals, businesses, governments, and even the entire society. As the city continues to expand wirelessly, Samsung Tektronix’s R&D chief forecast predicts that wireless video surveillance services will also be an important part of it, and related cities will set off a climax of wireless surveillance.

Wireless monitoring can only achieve local monitoring due to various factors, especially bandwidth constraints. The equipment directly connects to the wireless network and the monitoring area successfully enters the metropolitan area from the local area. Moreover, relative to the fixed-point monitoring, the boosting force for the monitoring of buses, taxis, etc. is very obvious. Previously, wireless surveillance mainly relied on small bandwidth networks such as mobile and China Unicom, which could easily cause delays, bit errors, and so on. “Wireless City” relies on Wi-Fi as a multi-module mesh-grid wireless network system for wireless transmission. Compared with Mobile and China Unicom, network bandwidth has been greatly improved and the stability is also higher. In addition, how to implement monitoring of areas where cabling is difficult or where cabling cannot be performed has always been a major problem of traditional monitoring. After the city has achieved network coverage in the entire city, the aforementioned area is no longer a monitoring blind spot.

However, there are also people in the industry who believe that the impact of broadband on wireless monitoring is very limited. It is believed that although some cities have achieved city-wide coverage of the network, such networks are mainly used for communications and are different from those required for wireless monitoring. Fixed-point monitoring is too expensive and bandwidth is limited. At the same time, it is still in the trial phase and the stability of the network remains to be verified. And whether or not the wireless monitoring system is adopted is largely determined by the complicated geographical environment of the project, the cost of the wiring, and the actual requirements of the implementation project, and is mainly applied in occasions where it is inconvenient for wiring or without obstacles, but its There are still disadvantages such as instability, unreliability, low bandwidth, and limited coverage of wireless networks. Therefore, to a certain extent, it is still only a supplementary role for cable monitoring, and it is yet to be further improved in technology.