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Development and application of wireless video surveillance
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Posted: August 11, 2014 |
The main advantage of wireless video surveillance have lower overall costs, just a one-time investment, no trenching pipe, especially for outdoor distance and has been renovated occasions. In many cases, users are often restricted due to the geographical environment and job content, such as mountains, harbor and open to other special geographical environment, wired networks, cable transmission cabling works great inconvenience, the construction period will be wired very long, or even impossible to achieve. At this time, the use of wireless monitoring can get rid of the shackles of cable, there are short installation period, easy maintenance, strong expansion capability, rapid recovery of the cost advantage. Managers can quickly add new wireless monitoring points to an existing network, no network rollout for the new monitoring point, additional equipment, easily remote wireless monitoring. Wireless monitoring and maintenance is maintained by the network provider, the front-end equipment is plug and play, maintenance-free system. However, with the rapid development of wireless transmission technology, its security problem is getting people's attention. Although the security of wireless transmission equipment on the market through a variety of mechanisms to enhance its security, but many people in the industry study found that confidentiality agreements with a variety of security vulnerabilities exist, such data can not be guaranteed confidentiality, integrity and implementation of user access authentication.
The obvious advantages of wireless monitoring, from non-wireless transmission technology support, currently optional wireless transmission technologies include 3G, WiFi and GPRS, these three techniques are commonly used existing wireless transmission technology, which, 3G network is the most common, but also real-time transmission of the main carrier. Now 3G network coverage more widely, both cloth built in cities and the surrounding areas, the theoretical bandwidth of 2Mbps or more, can meet the needs of real-time transmission of standard definition video streams. WiFi 3G network bandwidth is much larger than the bandwidth, but the narrow construction surface, even in the big cities but also failed to achieve full coverage of its network is not conducive to real-time monitoring data bus transfer applications, 3G network transmission of video signals traffic volume is high, high tariffs, high late fees; 3G wireless bandwidth to compensate for deficiencies, bus companies will generally be present station cloth build a WiFi network, when the bus comes into play, which began automatically switch to high-bandwidth WiFi network traffic transfer large data, but can not meet the needs of real-time monitoring. Bandwidth GPRS wireless transmission technology is one of the lowest among the three, the network is only good case under 10 to over 100 Kbps, unable to meet the real-time transmission of video streams ordinary, generally used for frame transmission or alarm information dissemination; bad network under the circumstances, automotive server will automatically select GPRS network priority transmission alarm information. There are also two-generation GSM network transmission technology, because the technology bandwidth is extremely small, usually only a few Kbps, but its network coverage is very broad, is still the mainstream wireless transmission technology, such as 3G networks in remote areas can not be covered, you can selection of the technology to intermittent or continuous transmission vehicle condition.
Wireless transmission technology allows wireless monitoring applications in various fields should be realized, market research and analysis from security point of view, intelligent wireless video surveillance is currently mainly used in: residential secure wireless video surveillance, in our country, residential security is still in the initial stage of the application, there are many deficiencies. Traditional security system has no way to meet the demand. Residential alarm system is not perfect, some families have access to high-end residential and detector alarm host, network monitoring center to the district, but the real system normally used rarely. Application safe city of HD bayonet through a single camera specifications, consistent installation conditions require, fill light camera parameters specific system design, can be controlled, fixed camera scene, the outdoor section of the image in the daytime and night and maintain a variety of environmental changes in good agreement, enabling the system to capture high-resolution images of moving objects and to identify features. Bank ATM machine generally range is relatively small, relatively homogeneous environment, and fill light conditions in general are better, it is very good conditions for intelligent video analysis for wireless. And bank ATM machine money sensitivities involved, the demand for security is relatively high, the specific application of intelligent wireless video analysis functions relatively successful, for example: face recognition, trailing, strenuous exercise, abnormal movements and so on. Industrial inspection has been widely applied in the field of intelligent wireless video analysis techniques, the use of intelligent industrial cameras resolution can reach 1 / 10mm, more than artificial vision, a special camera can achieve higher accuracy. In the beverage industry, intelligent wireless video analysis can assist in judging the height of the installation drinks, caps installed correctly, vendors and other signs are clear, industrial inspection are generally in the room, the camera can be fixed installation conditions, adequate fill light, relative to a single detection feature enables intelligent wireless video analysis can be relatively more successful applications. In medicine, wireless intelligent video analysis also gained more successful applications, the use of modern technology instrument, you can shoot clear pictures under a microscope, using physical methods of analysis is the most reliable method of Medicine. A typical application is the urine analysis apparatus, a chemical analysis can be performed while the test strip method, etc., but as a result of a change in chemistry may lead to changes in the original cell, the use of physical methods after precipitation with stirring, in HD shoot camera, you can get a clear picture of stability, re-use method of wireless intelligent video analysis of the different types of cells statistics, which can maintain the most realistic results, or when the end is often difficult to detect the cause of using this method.
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| Posted By: | ShenZhen Apexis Electronic Co.,Ltd | Description: | Apexis is a high-tech company specializing in manufacturing ip cameras.supply ip camera,network camera,surveillance camera,wireless ip camera,wireless webcam,security ip camera,wifi ip camera,mini ip camera,poe ip camera,box ip camera,ptz ip came... | Phone: | 86-755-26509025 | City: | Shenzhen, China | Website: | http://www.apexis.cc | |
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