Frequently used tips in video surveillance systems

How to choose the right video surveillance system faster? How to configure the video surveillance system?

First of all, to understand whether the computer is equipped with a monitoring card or an embedded hard disk recorder as your monitoring host. The use of a computer to install a monitoring card, the overall investment is relatively low, suitable for places familiar with computer installation, professional duty, more functional requirements. The computer needs to be turned on for 24 hours; using an embedded hard disk recorder requires no special knowledge, no need to watch, and the operation is very simple, as easy as using a VCD.

Second, installing monitoring equipment requires determining the number of cameras to be installed and determining the monitoring range and image quality of each camera. First determine the number of cameras for surveillance, and then determine the scope of camera surveillance according to specific conditions: the distance from the camera to the monitoring point and the area to be monitored must be clearly defined.

Third: Do you need night vision? If your surveillance equipment is installed in dark places such as corridors, foyers, aisles, warehouses, etc., consider infrared night vision surveillance cameras. Note that infrared surveillance cameras are not only professional night vision or special custom, but also infrared. The camera also needs to have a light-assisted five-fingered scene, and the infrared distance will be shortened by several times. If the scene is a garden lawn, the infrared effect is even worse.

Fourth: Is it directly wired or installed using wireless transmission? In addition to the expensive price, the wireless network does eliminate the troublesome and unattractive installation of the camera, but it needs attention to the problems of distance and obstacles. In principle, cement materials will shorten the wireless transmission distance. Metal materials will completely block the wireless signal. The transmitter (on the camera) and the receiver (on the host) should be far away from other electrical appliances to avoid interference.

Fifth: site monitoring and network monitoring. When determining the installation of the monitoring system, it is necessary to consider whether or not the network function is required. That is, if it is necessary to monitor and control the monitoring site at any time on the Internet, it is necessary to select a monitoring host having a network function so as to avoid installation and no network transmission function.

Sixth, how to choose analog or digital surveillance, I think network monitoring is the first choice, the price is not much more expensive than analog surveillance!

Choose the video surveillance type, then choose the right camera? How to choose the right camera in practice?

The viewing angle of the surveillance camera is inseparable from the millimeter of the focal length of the lens and the size of the CCD. The following table shows the correspondence between the millimeter of the focal length of the lens and the collocation angle of the CCD camera.

The dimensions of the 1/3-inch CCD with the lens shooting range are shown in the following table:

Note: The same millimeter lens with a 1/4-inch CCD chip shooting range and angle is a little bit narrower, but the object in the shooting screen looks bigger, the data in the table is the horizontal field angle, if the surveillance camera When viewing a high place and watching from a low place, the viewing angle and shooting range are slightly larger, but the objects on the shooting screen are slightly smaller.

The above table can be used as a reference, simple and clear!

If it is a PTZ camera, then pay attention to the zoom factor!

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