How to truly realizing a complete coverage of the wireless video monitoring

today, in the field of wireless video surveillance monitoring, because of the video image of the visual and the huge role in such aspects as public security, now not only at the airport, station, wharf and other occupied public video monitoring system, and in some offices and residential area also installed video monitoring system, particularly in some important places such as prison request a complete coverage of video monitoring application.

a video monitoring system generally consists of video acquisition, video transmission, image display, record, control and so on several parts. How can we truly achieve complete coverage of video monitoring. The following factors must be considered.

l density. The number per unit area required by the camera. This should be easy to understand, also won't produce any objection, because each camera shooting range is limited, don't have enough number of cameras may not achieve full coverage. So, to realizing a complete coverage of video monitoring, quantity demand is the first element must be considered.

l angles. For a video camera, no matter what is installed in place, USES the method of installation, always produce camera corner and blind area ( Even with spherical camera can rotate 360 degrees, is no exception) , therefore, must want to consider each camera shooting range, using several cameras cross each other, to solve the camera corner and blind area, truly a complete coverage of monitoring.

l clarity. Image resolution ( Can also be referred to as the image quality) Has the following several factors: one is the camera itself performance, index, if choose a standard definition or how high definition standard, light, etc. The second is the use of environmental factors, such as the day or night, high or low temperatures, Many cameras at high and low temperature can't normal work or not work) Other factors, such as, indoor or outdoor. Three is cleanliness, and because the camera is generally installed in a higher and more secluded place, clean job is not very convenient, and often overlooked, so this factor should be paid attention to more ( Speaking of clarity, often only from a technical point of view, ignore the non-technical factors influence on image resolution) 。

l transmission, recording and processing. These factors are also relatively easy to be ignored, because people tend to focus on image is clear, whether the whole shooting range, and ignore the image is ultimately need to be transmitted to the monitoring center, the monitoring center to record, display and viewing. System refers to the front camera video signal transmission through optical transceiver and cable transmission to the monitoring center, monitoring center, the video image storage of digital hard disk video recorder. Transport ( On the physical optical fiber or cable; What encoding used on technology, whether there is error correction function, etc. ) , transmission distance, storage record way will affect the image quality, can also affect the video image can cover all ( Transfer process have interrupt, images have gaps, etc. ) 。

l intelligent analysis. Because the cameras are numerous, management personnel cannot real-time observed each camera monitoring area, therefore need to focus the camera, video analysis can analyze video area appeared alert cordon into, legacy or items lost, retrograde, crowd density anomaly, etc. , can track of appeared in the area of video moving object automatically recognize the target type, mark targets and draw the target motion trajectory, voice alarm information in a timely manner, such as someone illegally precinct to manned or unmanned, and so on, and there will be alarm camera on the screen to switch to the command center, hint for relevant treatment in a timely manner.

if l under the condition of the wiring difficult construction, selection of wireless video monitoring terminal. Wireless video monitoring terminal, is the collection of 3 g / 4 g wireless communication technology, video capture, video superposition, sounds and intercom, alarm, GPS positioning, capture, yuntai control, hard disk storage, SD card storage and remote video playback and other technology in the integration of intelligent wireless equipment. System stability, function is rich, can meet the different needs of users.

wireless video terminal product figure:

in order to achieve full coverage, in addition to technical factors and non-technical factors must also be considered. The author thinks that, before the installation, use a complete coverage of video monitoring, should first consider the argument, is it necessary to realizing a complete coverage of video monitoring or don't need a video monitoring system, to achieve full coverage because it is over, the investment is very big. After an accident, for example, requirements in all similar places in realizing a complete coverage of video monitoring, the author thinks that this kind of practice is too simple and extreme, will cause the waste of resources. For a bus, for example, an accidental damage event happened, the management asked all installed cameras in all on the bus, and now to install commonly 4 per car, the most required to install 8 units, this is a great waste of resources, and in order to maintain its normal operation, every year to spend a lot of maintenance and repair costs, on the contrary fiscal funds should be spent on the blade, such as health care, education, reduce the financial burden on the people.