What is an analog camera

The entire video surveillance system is divided into front-end video acquisition equipment, mid-end transmission processing equipment and back-end display viewing equipment. The Analog Camera we call belongs to the front-end video acquisition equipment, the analog camera outputs an analog video signal, and the analog video signal generated by the video acquisition equipment can be converted into a digital signal through the encoder, and then stored in the computer. The video captured by an analog camera must be converted into digital mode by a specific video capture card and compressed before it can be converted to a computer

edit broadcast

Analog surveillance cameras are mainly divided into several forms: one, gun, two, dome, three, global, four, infrared.

Shotgun camera

The so-called gun camera, only for the shape to distinguish, this is the initial form of the camera, in fact, is the camera board + shell, does not contain lenses, can be freely matched with various types of lenses. Installation method hoisting, wall installation can be, outdoor installation is generally equipped with protective cover, this kind of camera is mainly used in special fields and high-end fields, the low-end field is basically replaced by all-in-one machine and hemisphere. The gun type is mainly suitable for areas with insufficient light and areas where lighting equipment cannot be installed at night, and when only monitoring the position or movement of the scene, a gun camera can be selected. The application range of the gun camera is more extensive, according to the different lenses, can achieve long-distance monitoring or wide-angle monitoring, the application is also wider than the hemisphere, the zoom range of the bolt depends on the lens selected, can vary from several times to dozens of times, and the lens replacement is easier, in addition, if there is a need for the bolt need to be equipped with a protective cover.

Dome camera

Dome cameras, also named for the form factor. In principle, it is the same as the gun camera, but the form is different, in fact, it is the camera board + lens + shell, generally used indoors, ceiling installation, limited by the shape of the general lens focal length will not exceed 20mm, the monitoring distance is short; Dome cameras are widely used in banks, hotels, office buildings, shopping malls, subways, elevator cars and other places that need to be monitored, pay attention to beauty, and pay attention to concealment because of their beautiful appearance and good concealment performance. Overall, the gun camera is more scalable; Dome cameras are more beautiful and hidden, because civilian surveillance is not more special lens requirements, so choosing a hemisphere is more practical.

Spherical camera

Dome camera is a high-end equipment for monitoring products, which can be divided into high-speed ball, medium-speed ball and low-speed dome with the speed of PTZ; According to the use environment, it can be divided into indoor intelligent sphere and outdoor intelligent sphere; It can be divided into hoisting, side mounting or embedded by installation method. This is a highly integrated product, integrated PTZ system, communication system, and camera system, is the performance of surveillance cameras, is a combination of clarity and intelligence, is the most complex and comprehensive performance of the monitoring system camera front-end, manufacturing complex, expensive, can adapt to high-density, the most complex monitoring occasions.

Infrared all-in-one machine

The infrared all-in-one machine is actually a convenient picture and cost reduction, the dome machine or gun machine is equipped with infrared lamp + camera board + lens + camera shield to sell together, but because the infrared lamp heat affects the camera, it will reduce the image quality. This is a unique product in China, because the domestic focus on price and convenience is more than product quality, and developed countries in Europe and the United States generally do not produce such cameras. This kind of camera has a wide range of applications, covering low-end prices, medium and short distance monitoring, indoor and outdoor installation, day and night can be used, it is more convenient to use, but it is generally not used in the field with high requirements for image quality.

676637241