As a small-scale remote digital surveillance system, the wireless video surveillance system is used together with a network camera and can be wired or wirelessly connected to the network. It is easy to install, and does not require users to additionally configure dedicated computers and capture video equipment. The user can use a mobile phone or a computer as a monitoring terminal device to receive alarm information and view monitoring video anytime, anywhere. With the development, wireless remote video surveillance system is undoubtedly the future direction of development.
Necessity of Wireless Remote Video Surveillance System Application
A complete wireless remote video surveillance system must include three parts: the monitoring front end, the monitoring center end, and the transmission. The biggest advantage of the wireless video surveillance system is that it eliminates the trouble of wiring and enables quick access from the front end to the back end. For conventional video distribution methods such as video surveillance in forested areas in mountainous regions, video surveillance along highways, video surveillance in oil-field unmanned areas, and video surveillance in border defense lines, it is difficult to achieve high costs. In this case, only wireless remote video surveillance systems can be used. In recent years, the State has built a safe city network video surveillance system in some cities. It only completed video surveillance of certain special industries such as Internet cafes and entertainment venues. However, to truly realize citywide video surveillance and citywide coverage, the cost of line access is still high. . Shenzhen has made an attempt in this area. Nanshan District has achieved wireless network coverage in the entire region and video surveillance through wireless networks. It has found a balance between technology and capital investment. Some cities, including Guangzhou, also have plans to implement wireless network coverage, which lays the foundation for the implementation of video surveillance systems. It can be seen that wireless network video surveillance has unique application advantages.
The advantages of wireless video surveillance system are as follows
1, the relative cost is low
Wireless video surveillance system can get rid of the shackles of cable, once invested and benefit from life. In addition, the wireless video surveillance system has a short installation cycle, easy maintenance, and strong capacity expansion. In addition, it also has the advantage of rapid cost recovery. (This cost can only be relatively speaking, the camera still requires power supply, that is to say, some locations still need to install power cords, and less wiring is just video lines, and wireless devices are not cheap, and the transmission distance is also limited. .)
2, flexible
The flexibility of wireless video surveillance systems is strongly reflected in: flexible networking, scalability, and plug-and-play. Managers can not only quickly add new wireless monitoring points to existing networks, but also eliminate the need to lay out networks for new transmissions, add equipment, and easily implement remote monitoring.
3, low maintenance costs
Because the wireless video surveillance system does not require wiring and is maintained by the network operator, its maintenance is mainly for the front-end device. Wireless video surveillance systems are favored by most people because of the trouble of eliminating wiring, and it can also make the venue more beautiful and make monitoring work progress more smoothly.
The main application of smart wireless video surveillance
1. Community security wireless video surveillance
In China, community security is still in an initial stage of application and there are many deficiencies. The first is the monitoring of the use of land in and around public areas. In the perimeter and the main entrances and exits, cameras are installed. The monitoring center in the community operates 24 hours a day. However, we should understand that regardless of how dedicated the security guards are monitored, they cannot monitor multiple video images at the same time and they cannot stare at them for a long time. Watch TV watching. Most districts have only 1-2 computer monitors and dozens or even dozens of cameras for round-robin monitoring. This makes it difficult to effectively monitor in real time. Moreover, the ways in which criminals commit crimes have been diversified. The traditional security system has no way to meet the demand. Second, the community network alarm system is not perfect. Some high-end districts all have access to alarm panels and detectors, and are networked to cell monitoring centers. However, few systems are actually in use.
2. Wireless Video Surveillance at Prisons, Detention Centers and Drug Addiction Treatment Centers
The applications of prisons, detention centers and drug detoxification centers are mainly applied indoors, the indoor environment is relatively single and the environmental changes are relatively stable. Through the analysis of practical application of various smart wireless video analysis functions in this environment, some important and detection accuracy rates will be achieved. High-quality applications are extracted, such as: wireless video quality diagnosis, cordon, stand up, area guarding, strenuous exercise, and duty posts, in order to achieve high detection accuracy (99%) and low false alarm rate. Better auxiliary management effect.
3, HD bayonet video surveillance
In the application of HD Bayonet in the safe city, the outdoor section is imaged in the day and night through a single camera specification and model, consistent installation condition requirements, special lighting system design, controllable camera parameters, and fixed camera scenes. As well as maintaining good consistency in various environmental changes, the system can capture high-definition pictures of moving targets and identify features.
4, bank ATM automatic teller machine
Bank ATM ATMs are generally small in scope, relatively single in environment, and generally have better lighting conditions, which is a very good condition for smart wireless video analysis. Moreover, bank ATMs involve sensitive money, and the need for security is relatively high. Specific smart wireless video analysis functions are used successfully, such as face recognition, trailing, strenuous exercise, and abnormal movements.
5, industrial inspection video surveillance
In the field of industrial inspection, smart wireless video analysis technology has been widely applied. The resolution of smart industrial cameras can reach 1/10mm, which exceeds the artificial vision. Special cameras can achieve higher precision. In the beverage industry, smart wireless video analysis can help determine the height of installed beverages, correct cap installation, and whether the manufacturer's logo is clear. Industrial inspections are generally indoors. Fixed camera installation conditions, adequate fill light, and relatively single detection Features make smart wireless video analytics relatively more successful applications. Including in automotive manufacturing, tire manufacturing, logistics, machinery manufacturing, printing quality inspection, wireless video processing industry, steel casting industry, agriculture and other fields to obtain more successful applications.
6, medical imaging analysis
In medicine, wireless video intelligent analysis has also been applied successfully. Using modern scientific and technical instruments, it is possible to take clear pictures under a microscope. Using physical methods for analysis is the most reliable medical method. A typical application is a urine analysis instrument. Although chemical analysis methods such as dipsticks can be used for analysis, changes in the original cells may occur due to chemical changes. After stirring by a physical method, precipitation is performed in HD. Shooting with a camera, you can get a stable and clear picture, and then use wireless video intelligent analysis methods to count the different types of cells, which can maintain the most realistic results, this method is often used in high-end or difficult cause detection.
The development direction of wireless remote video surveillance system
Although the development of the wireless remote video surveillance system has a long way to go, its development roadmap is clearly visible. The integration of technology, application of civilian use, and development of mainstream technologies are the key to realizing the leap in wireless surveillance systems.
1. Integration of Network Video Surveillance Technology
Network video surveillance technology has been taking a road of technological integration. From the initial network video server, to the subsequent launch of the integrated network ball, to today's very popular network cameras, the network video surveillance technology has achieved integration with the ball head platform technology and camera technology. When wireless technology is increasingly involved in the field of video surveillance, the combination of network video surveillance technology and wireless technology has become a matter of course, which also helps to further improve the stability of the product and the ease of application, is conducive to the manufacturers to subdivide Network video surveillance market to avoid homogenous competition. Currently, WIFI-enabled network cameras on the market are the best evidence for this view. It is expected that future network video surveillance products supporting various types of wireless networks will also compete in the market.
2. Application of Network Video Surveillance System for Civilization
The network video surveillance system is undergoing a process of transition from industrial applications to civilian use. The emergence of wireless application terminals has contributed to this process. With the further development of 3G technology, each person's handheld mobile phone will become the best wireless terminal business platform. People can use mobile phones to achieve wireless network video surveillance. At the same time, home wireless networks are also emerging. People can use laptops to access networks through wireless routers and quickly build HWLANs (home wireless networks). Home-based network cameras that support wireless mode will take over the functions of home care, shop inspections and other functions, making wireless video surveillance technology further into home users.
3, mainstream technology dominant
The scale application of wireless remote video surveillance system must be inseparable from the wireless network environment, and the wireless network environment is inseparable from the construction of operators. With the improvement of China's 3G network technology and the role of the "Science and Technology Olympics" concept in Beijing Olympics in promoting information technology, the third-generation wireless network technology represented by TD will inevitably rise rapidly in China. This is the key to realizing the scale application of wireless remote video surveillance systems.
With the development of wireless communication technology, the transmission bandwidth has been continuously improved, and the real-time information processing capability of communication terminals has been rapidly increasing. Wireless multimedia applications are becoming the focus of attention in the industry and have become an inevitable demand for people. One of its mainstream applications is a convenient and flexible wireless real-time video surveillance system, such as wireless home security, car monitoring and so on. Mobile video surveillance based on multiple wireless transmission methods has become a new direction of video surveillance with its unique flexibility.
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