Surveillance technology has stepped into the realm of multiple wireless surveillance applications. Various types of wireless transmission interfaces and media types that can be carried by security monitoring are quite diverse, ranging from GPRS, Z-wave, Zigbee and WSN, which transmit data signals, to broadband wifi. WiMAX, ultra-broadband 3GTD, and 4GTD-LTE are basically the transmission technologies that wireless security monitoring systems can use. The only difference is that the benefits of wireless image monitoring applications are different. The main application technologies of wireless monitoring systems such as 3G, WIFI, and WIMAX are influenced by factors such as frequency bands and transmission power of microwave signals. Their performance in the transmission parameters such as network transmission rate and coverage is very different. Among them, many are currently wifi, WiMAX and 3G are used for high-speed video transmission. 4G is not widely used due to the limitation of universal coverage.
The following application requirements for wireless monitoring and transmission are feasible and feasible for wireless security monitoring, and there are specific application solutions:
Personnel and vehicle satellite positioning tracking anti-theft monitoring;
Digital simulation data remote automatic monitoring system;
Distribution and other power parameters remote automatic monitoring system;
Real-time and non-real-time remote image monitoring systems;
Public infrastructure health remote automatic monitoring system;
Elevator fault remote automatic monitoring system;
Lighting fault remote automatic monitoring system;
Building automation data remote wireless acquisition system;
Environmental control parameters remote automatic monitoring system;
Building access control disaster prevention remote wireless monitoring system.
In addition, briefly explain that these types of broadband wireless technology applications in the wireless monitoring market, mainly for the WiFi (Wireless Fidelity) 802.11b standard and WiMAX (WorldwideInteroperabilityforMicrowaveAccess), that is, two kinds of global microwave interconnection access, mainly used in urban wireless monitoring.
WiFi image monitoring has the following advantages:
Signal transmission radius of up to 100 meters, can be applied in the office, or even the entire building;
Transmission speed is very fast, can reach 11-54Mbps, in line with the needs of personal and regional imaging and information transmission;
The threshold for manufacturers to enter this engineering area is relatively low, as long as AP hotspots are set within the monitoring scope project, and the Internet is accessed to these sites through high-speed lines, and only laptops, workstations, and even wireless LAN-enabled computers are required for monitoring and use. The mobile phone or PDA can get into the area and can access the image transmission wireless network at high speed.
WiFi is widely used and is the most widely used wireless technology in wireless surveillance. After years of development in short-distance transmission, WiFi has already had a very good application basis. It is mainly used in wireless network cameras, and many domestic WiFi wireless network cameras have good performance.
As the international 3G standard, WiMAX has not been widely used in China. The main reason is that WiMAX has not obtained the license to land in China at this stage, and it is unable to build a large-scale network base. The advantages are summarized as follows:
WiMAX has a longer transmission distance and can achieve 50 km of wireless signal transmission. The network coverage area is 10 times that of 3G (TD-SCDMA) transmission towers. As long as a small number of base stations can achieve citywide coverage;
Provides higher speed broadband access (up to 70M), 30 times faster than 3G;
As a wireless metropolitan area network technology, it can connect WiFi hotspots to the Internet, and can also be used as a wireless extension of wired access methods such as xDSL to realize broadband access in the last mile and provide multimedia communication services and other advantages.
With the above advantages, although WiMAX has not been widely applied in China, WiMAX is an ideal application for wireless monitoring and is attracting attention from domestic users. At present, there are high-end residential applications using WiMAX to construct image surveillance. system.
In addition to the above two major transmission technologies, the global mobile communications industry is more concerned about the future development of 4G LTE (Long Term Evolution). LTE is developed by the 3GPP organization and can be said to be the ultimate version of 3G. It can provide 100Mbps download speed and 50Mbps upload speed at 20MHz bandwidth. Both bandwidth and speed have been improved. Therefore, it is considered to be more suitable for transmitting larger image data such as files. Among them, the application of video surveillance systems is currently the most popular application of ultra-high bandwidth wireless surveillance systems in China.
The following application requirements for wireless monitoring and transmission are feasible and feasible for wireless security monitoring, and there are specific application solutions:
Personnel and vehicle satellite positioning tracking anti-theft monitoring;
Digital simulation data remote automatic monitoring system;
Distribution and other power parameters remote automatic monitoring system;
Real-time and non-real-time remote image monitoring systems;
Public infrastructure health remote automatic monitoring system;
Elevator fault remote automatic monitoring system;
Lighting fault remote automatic monitoring system;
Building automation data remote wireless acquisition system;
Environmental control parameters remote automatic monitoring system;
Building access control disaster prevention remote wireless monitoring system.
In addition, briefly explain that these types of broadband wireless technology applications in the wireless monitoring market, mainly for the WiFi (Wireless Fidelity) 802.11b standard and WiMAX (WorldwideInteroperabilityforMicrowaveAccess), that is, two kinds of global microwave interconnection access, mainly used in urban wireless monitoring.
WiFi image monitoring has the following advantages:
Signal transmission radius of up to 100 meters, can be applied in the office, or even the entire building;
Transmission speed is very fast, can reach 11-54Mbps, in line with the needs of personal and regional imaging and information transmission;
The threshold for manufacturers to enter this engineering area is relatively low, as long as AP hotspots are set within the monitoring scope project, and the Internet is accessed to these sites through high-speed lines, and only laptops, workstations, and even wireless LAN-enabled computers are required for monitoring and use. The mobile phone or PDA can get into the area and can access the image transmission wireless network at high speed.
WiFi is widely used and is the most widely used wireless technology in wireless surveillance. After years of development in short-distance transmission, WiFi has already had a very good application basis. It is mainly used in wireless network cameras, and many domestic WiFi wireless network cameras have good performance.
As the international 3G standard, WiMAX has not been widely used in China. The main reason is that WiMAX has not obtained the license to land in China at this stage, and it is unable to build a large-scale network base. The advantages are summarized as follows:
WiMAX has a longer transmission distance and can achieve 50 km of wireless signal transmission. The network coverage area is 10 times that of 3G (TD-SCDMA) transmission towers. As long as a small number of base stations can achieve citywide coverage;
Provides higher speed broadband access (up to 70M), 30 times faster than 3G;
As a wireless metropolitan area network technology, it can connect WiFi hotspots to the Internet, and can also be used as a wireless extension of wired access methods such as xDSL to realize broadband access in the last mile and provide multimedia communication services and other advantages.
With the above advantages, although WiMAX has not been widely applied in China, WiMAX is an ideal application for wireless monitoring and is attracting attention from domestic users. At present, there are high-end residential applications using WiMAX to construct image surveillance. system.
In addition to the above two major transmission technologies, the global mobile communications industry is more concerned about the future development of 4G LTE (Long Term Evolution). LTE is developed by the 3GPP organization and can be said to be the ultimate version of 3G. It can provide 100Mbps download speed and 50Mbps upload speed at 20MHz bandwidth. Both bandwidth and speed have been improved. Therefore, it is considered to be more suitable for transmitting larger image data such as files. Among them, the application of video surveillance systems is currently the most popular application of ultra-high bandwidth wireless surveillance systems in China.
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