1、 Composition of surveillance engineering camera:

We need to have a general understanding of the composition of the surveillance camera system. When you install a monitoring system, you need to know at least what parts of the monitoring system include, usually including the front-end camera, transmission cable and equipment, hard disk video recorder and display. This component is the simplest equipment system. The transmission cables are now network cameras, and the network cables are used for transmission. The number of routers or switches used in the transmission equipment needs to be configured according to the specific situation.

2、 Outline of surveillance engineering camera:

We have all seen all kinds of surveillance engineering cameras, the most conventional are gun machine, ball machine and hemispherical camera; Other shapes include intelligent machines, toys, plugs, light bulbs and other styles.

Different shapes basically play the same role. The specific role is related to the chip and lens parameters of the camera, such as the installation of a gun machine outdoors, the use of a hemispherical camera on the indoor ceiling for good-looking, the shape of toys for baby care, the shape of plugs for concealed installation, etc.

In fact, after determining whether to use a gun or a hemisphere, for example, there are many styles of hemispherical cameras. When selecting, you can choose according to your preference when meeting the use needs.

3、 Surveillance camera lens:
The lens focal length of the surveillance camera is 2.8mm, 4mm, 6mm, 8mm and 12mm. The lens of the surveillance camera can be selected according to the monitored object. Generally, the smaller the lens focal length, the larger the angle range, but the shorter the monitored distance.

Therefore, the 2.8mm lens is suitable for the narrow environment of corridors and elevators, 4mm for rooms, 6mm for corridors or unit doors, 8mm for workshops or corridors, and 12mm for narrow roads.

4、 Resolution of surveillance engineering camera:
The resolution of the surveillance camera is what we usually call clarity. The larger the resolution, the higher the pixel, the clearer the image. Now the network camera usually uses more 1 million, 2 million and 4 million pixels, which can basically meet the requirements of normal monitoring.

The higher the resolution is, the larger the storage space of surveillance video will be, and the storage time will be shorter. Therefore, when considering the definition, we need to consider the storage time of video at the same time.

5、 Power supply mode of surveillance engineering camera:

The first official account of power supply mode has talked about many related articles before, and it is divided into independent power supply, centralized power supply and POE power supply. Independent power supply has the advantages of clear construction and maintenance lines, easy maintenance, but high cost. Centralized power supply. If the power supply of the monitoring system fails, the whole system is easy to be paralyzed, but the construction and maintenance are simple. Poe power supply, camera and switch supporting Poe are used, power is free, and network cable is used directly.

6、 Storage mode of surveillance engineering camera:
Once there is a problem with the storage of the monitoring system, the whole system will lose its basic function of restoring the video truth. The current monitoring storage methods usually include three kinds: video recorder hard disk storage; SD card storage; cloud storage.

The card inserted memory camera does not need to be set, and the card can support video recording. The mode is circular video recording. When the memory card is full, the earlier video will be overwritten. Cloud storage is the product of the development of Internet technology. Many home monitoring brands support cloud video, cloud access and playback.

7、 Networking mode of surveillance engineering cameras:

The networking methods of network surveillance cameras include: network cable connection; WiFi connection; For AP hotspot connection, each method has different application environments and has its own advantages and disadvantages, but it is recommended to use network cable for stable and reliable connection.

8、 Video coding of surveillance engineering camera:
The so-called video coding method refers to the way to convert a video format file into another video format file through specific compression technology. Why should video be encoded? Not to mention the complexity, it is simply for compression - processing redundant data, compressing file size, reducing bandwidth and reducing storage space.