Wireless monitoring products can be broadly divided into two categories: First, mobile monitoring equipment through wireless transmission, monitoring of fixed or non-fixed locations, such as law enforcement vehicles through surveillance cameras mounted on the roof or through law enforcement officers carrying handheld surveillance cameras , Real-time image acquisition on the scene of law enforcement, and then through the wireless network to image transmission to the monitoring terminal; Second, through the mobile terminal equipment (such as mobile phones), access to fixed surveillance cameras for fixed locations and venues collected images, such as 3G mobile phone monitoring. At present, mobile monitoring product forms include mobile phone (or mobile terminal) monitoring, bus movement monitoring, vehicle-mounted mobile monitoring (mainly law enforcement vehicles), law enforcement recorders, and mobile individual equipment.
The typical wireless monitoring system consists of four parts: the camera part, the transmission part, the control and recording part, and the display part.
The camera part is the front part of the wireless video transmission system and is the "eye" of the entire system. When the area to be monitored is large, a zoom lens is installed on the camera to make the distance that the camera can observe farther and clearer; the camera can also be mounted on the electric head, allowing the camera to drive the camera horizontally And vertical rotation, so that the camera can cover a larger range. In some cases, especially in the case of outdoor applications, in order to prevent dust, rain, high and low temperatures, and resist corrosion, a special protective cover should be added to the camera and its lens, even to the head. There are corresponding protective measures.
The wireless video transmission part is the image signal path of the system. In general, the transmission part refers to the transmission of images and sound signals. At the same time, because the control center needs to control the camera, the lens, and the pan-tilt through the console, the transmission system also includes the transmission of control signals.
The control and recording part is responsible for the control of the camera and its auxiliary components (such as the lens and the head), and records the image and sound signals. At present, the technology of hard disk video recorders has been developed relatively well. It can not only record images and sounds, but also include functions such as screen division and switching and pan-tilt lens control.
The display section generally consists of several or more monitors. In the case where the number of cameras is not very large and the requirements are not very high, the monitor is usually connected directly to the DVR. If the number of cameras is large and multiple monitors are required to perform complicated switching display on the screen, then a matrix must be provided.
The typical wireless monitoring system consists of four parts: the camera part, the transmission part, the control and recording part, and the display part.
The camera part is the front part of the wireless video transmission system and is the "eye" of the entire system. When the area to be monitored is large, a zoom lens is installed on the camera to make the distance that the camera can observe farther and clearer; the camera can also be mounted on the electric head, allowing the camera to drive the camera horizontally And vertical rotation, so that the camera can cover a larger range. In some cases, especially in the case of outdoor applications, in order to prevent dust, rain, high and low temperatures, and resist corrosion, a special protective cover should be added to the camera and its lens, even to the head. There are corresponding protective measures.
The wireless video transmission part is the image signal path of the system. In general, the transmission part refers to the transmission of images and sound signals. At the same time, because the control center needs to control the camera, the lens, and the pan-tilt through the console, the transmission system also includes the transmission of control signals.
The control and recording part is responsible for the control of the camera and its auxiliary components (such as the lens and the head), and records the image and sound signals. At present, the technology of hard disk video recorders has been developed relatively well. It can not only record images and sounds, but also include functions such as screen division and switching and pan-tilt lens control.
The display section generally consists of several or more monitors. In the case where the number of cameras is not very large and the requirements are not very high, the monitor is usually connected directly to the DVR. If the number of cameras is large and multiple monitors are required to perform complicated switching display on the screen, then a matrix must be provided.
T Handle Torx Set,T Handle Hex Key,T Handle Hex Key Set,Best T Handle Hex Set
henan horn tools co.,ltd. , https://www.hornhandtools.com