CCTV system
Closed Circuit Television (CCTV) An image communications system. Its signal is only transmitted from the source to a prearranged special TV set that is connected to the source. Widely used in a large number of different types of surveillance work, education, video conferencing and so on.
Closed-circuit television monitoring system (CCTV) is an important component of the security technology prevention system. It is an advanced comprehensive system with strong prevention capabilities. It can be directly controlled by remote-control cameras and their auxiliary equipment (lenses, heads, etc.) To view all the conditions of the site being monitored, the conditions of the site being monitored can be seen at a glance, and videos can be provided for later inquiry and analysis. At the same time, the television monitoring system can also be operated in conjunction with other security technology prevention systems such as anti-theft alarm systems and access control systems to make it more powerful.
Overview
CCTV monitoring system can display the images of monitored control objects in real time, vividly and truly, on occasions where people cannot directly observe them, and has become an extremely effective observation tool that people monitor in modern management. Because it has the unique function of observing many areas and even long-distance areas with only one person operating in the control center, it is considered as a necessary means of security work.
CCTV monitoring systems can provide close observation, monitoring and control of certain important areas. The system complies with the relevant technical specifications of the country. In general, TV cameras should be set up in the system to achieve all-round monitoring. The main equipment of the system shall be equipped with a TV monitor, a time-lapse video recorder and a screen processor, so that the user can view any screen and remotely operate any one of the PTZ cameras and the zoom function with a remote-control camera.
Closed-circuit television (also known as CCTV) surveillance system is an important part of the security field. The system directly observes the situation of the monitored site through the camera and its auxiliary equipment (lens, head, etc.), and can synchronize the situation of the surveillance site. Video. In addition, the television monitoring system can also act in conjunction with other security technology prevention systems such as anti-theft alarm systems, so that the user's security protection capability is overall improved CCTV system components: In general, the front-end, transmission, and terminal components.
(1) Front end: Used to obtain the image of the monitored area: it is generally composed of a camera, a lens, a gimbal, an encoder, a dust cover, and the like.
(2) Transmission part: The role is to feed the video (sometimes including audio) signal output by the camera to the center room or other monitoring points: it is generally composed of feeders, video cable compensators, video amplifiers, etc.
(3) Terminals: used for display and recording, video processing, output control signals, signals received from the front end: generally include monitors, various control devices, and recording devices.
The main equipment of CCTV:
1. Camera: In the system, the camera is at the forefront of the system. It converts the optical image of the object to an electrical signal, the video signal, and provides the signal source for the system. Therefore, it is one of the most important devices in the system.
2. Camera Lens: The function of the camera optical lens is to focus the light image of the observed object on the CCD sensor device. The image produced on the sensor device will be the reverse of the object. This can be achieved with a simple convex lens. However, the image quality at this time is not high, and a clear image cannot be obtained at both the center and the edge. For this purpose, a number of lens elements are often added to form a compound lens, so that a satisfactory image can be obtained.
3. PTZ: Its use with the camera can achieve the purpose of turning up and down and left and right. Expand the surveillance range of a camera, and at the same time track the target within a certain range and take pictures, which increases the practical value of the camera. Due to the different usage environments, there are many types of heads.
4. Protective cover (dust cover) and bracket, decoder: The role of the dust cover is to protect the camera and lens from environmental conditions such as harmful gases, large dust, and intentional vandalism. (The decoder is used to complete the bus control of the camera lens and pan/tilt head. The bracket is used as a support when the camera is installed, and the camera is connected to an auxiliary device at the installation site.)
5. Monitor: The monitor is the terminal display device of the television monitoring system. The state of the entire system must ultimately be reflected on the monitor screen. The quality of the monitor directly affects the final result of the entire system.
6. Signal transmission: When the monitoring site is close to the control center, video images are used, and the control signals are directly transmitted. When the distance is far, radio frequency, microwave, or optical fiber transmission is used. Commonly used equipment: coaxial cable, twisted pair, optical fiber. The transmittable distance increases progressively from near to far.
7. Control Center Control Equipment and Monitoring Equipment: (1) Video Signal Distribution Amplifier; (2) Matrix (Video Signal Switcher); (3) Terminal Controller (Operation Keyboard); (4) Alarm Extended Printer (5) Character generator, elevator floor overlay display; (6) terminal decoder; (7) terminal controller; (8) multi-picture splitter; (9) video motion detector; (10) isolated ground loop transformer; 11) Pricing and Control Cabinets, etc.
to sum up
CCTV monitoring system is an important component of the security technology prevention system, and it is an advanced comprehensive system with strong prevention capability. It can be directly monitored by the remote control camera and its auxiliary equipment (lens, head, etc.) All the conditions of the site can also be linked with anti-theft alarm systems and other security technology protection systems to make it more powerful. The technical requirements of the CCTV monitoring system are mainly: the definition of the camera, the transmission bandwidth of the system, the signal-to-noise ratio of the video signal, the format of the television signal, and the camera.
The use of closed-circuit television monitoring systems can protect personal safety, save time and costs, increase efficiency, achieve real-time command and scheduling, and process and save information. Closed-circuit television monitoring systems have been increasingly applied to *, finance (banks, postal savings, stock exchanges), mining, traffic management (highways, national highways, urban transport hubs), transportation (airports, terminals, railways, highways Bus terminal), hospitals, commercial (merchants, supermarkets, jewelry shops, wholesale markets), schools, residential property management, military, hotels (hotels, restaurants, office buildings), important material warehouses and security and other fields have become One of the modern management signs.
Closed Circuit Television (CCTV) An image communications system. Its signal is only transmitted from the source to a prearranged special TV set that is connected to the source. Widely used in a large number of different types of surveillance work, education, video conferencing and so on.
Closed-circuit television monitoring system (CCTV) is an important component of the security technology prevention system. It is an advanced comprehensive system with strong prevention capabilities. It can be directly controlled by remote-control cameras and their auxiliary equipment (lenses, heads, etc.) To view all the conditions of the site being monitored, the conditions of the site being monitored can be seen at a glance, and videos can be provided for later inquiry and analysis. At the same time, the television monitoring system can also be operated in conjunction with other security technology prevention systems such as anti-theft alarm systems and access control systems to make it more powerful.
Overview
CCTV monitoring system can display the images of monitored control objects in real time, vividly and truly, on occasions where people cannot directly observe them, and has become an extremely effective observation tool that people monitor in modern management. Because it has the unique function of observing many areas and even long-distance areas with only one person operating in the control center, it is considered as a necessary means of security work.
CCTV monitoring systems can provide close observation, monitoring and control of certain important areas. The system complies with the relevant technical specifications of the country. In general, TV cameras should be set up in the system to achieve all-round monitoring. The main equipment of the system shall be equipped with a TV monitor, a time-lapse video recorder and a screen processor, so that the user can view any screen and remotely operate any one of the PTZ cameras and the zoom function with a remote-control camera.
Closed-circuit television (also known as CCTV) surveillance system is an important part of the security field. The system directly observes the situation of the monitored site through the camera and its auxiliary equipment (lens, head, etc.), and can synchronize the situation of the surveillance site. Video. In addition, the television monitoring system can also act in conjunction with other security technology prevention systems such as anti-theft alarm systems, so that the user's security protection capability is overall improved CCTV system components: In general, the front-end, transmission, and terminal components.
(1) Front end: Used to obtain the image of the monitored area: it is generally composed of a camera, a lens, a gimbal, an encoder, a dust cover, and the like.
(2) Transmission part: The role is to feed the video (sometimes including audio) signal output by the camera to the center room or other monitoring points: it is generally composed of feeders, video cable compensators, video amplifiers, etc.
(3) Terminals: used for display and recording, video processing, output control signals, signals received from the front end: generally include monitors, various control devices, and recording devices.
The main equipment of CCTV:
1. Camera: In the system, the camera is at the forefront of the system. It converts the optical image of the object to an electrical signal, the video signal, and provides the signal source for the system. Therefore, it is one of the most important devices in the system.
2. Camera Lens: The function of the camera optical lens is to focus the light image of the observed object on the CCD sensor device. The image produced on the sensor device will be the reverse of the object. This can be achieved with a simple convex lens. However, the image quality at this time is not high, and a clear image cannot be obtained at both the center and the edge. For this purpose, a number of lens elements are often added to form a compound lens, so that a satisfactory image can be obtained.
3. PTZ: Its use with the camera can achieve the purpose of turning up and down and left and right. Expand the surveillance range of a camera, and at the same time track the target within a certain range and take pictures, which increases the practical value of the camera. Due to the different usage environments, there are many types of heads.
4. Protective cover (dust cover) and bracket, decoder: The role of the dust cover is to protect the camera and lens from environmental conditions such as harmful gases, large dust, and intentional vandalism. (The decoder is used to complete the bus control of the camera lens and pan/tilt head. The bracket is used as a support when the camera is installed, and the camera is connected to an auxiliary device at the installation site.)
5. Monitor: The monitor is the terminal display device of the television monitoring system. The state of the entire system must ultimately be reflected on the monitor screen. The quality of the monitor directly affects the final result of the entire system.
6. Signal transmission: When the monitoring site is close to the control center, video images are used, and the control signals are directly transmitted. When the distance is far, radio frequency, microwave, or optical fiber transmission is used. Commonly used equipment: coaxial cable, twisted pair, optical fiber. The transmittable distance increases progressively from near to far.
7. Control Center Control Equipment and Monitoring Equipment: (1) Video Signal Distribution Amplifier; (2) Matrix (Video Signal Switcher); (3) Terminal Controller (Operation Keyboard); (4) Alarm Extended Printer (5) Character generator, elevator floor overlay display; (6) terminal decoder; (7) terminal controller; (8) multi-picture splitter; (9) video motion detector; (10) isolated ground loop transformer; 11) Pricing and Control Cabinets, etc.
to sum up
CCTV monitoring system is an important component of the security technology prevention system, and it is an advanced comprehensive system with strong prevention capability. It can be directly monitored by the remote control camera and its auxiliary equipment (lens, head, etc.) All the conditions of the site can also be linked with anti-theft alarm systems and other security technology protection systems to make it more powerful. The technical requirements of the CCTV monitoring system are mainly: the definition of the camera, the transmission bandwidth of the system, the signal-to-noise ratio of the video signal, the format of the television signal, and the camera.
The use of closed-circuit television monitoring systems can protect personal safety, save time and costs, increase efficiency, achieve real-time command and scheduling, and process and save information. Closed-circuit television monitoring systems have been increasingly applied to *, finance (banks, postal savings, stock exchanges), mining, traffic management (highways, national highways, urban transport hubs), transportation (airports, terminals, railways, highways Bus terminal), hospitals, commercial (merchants, supermarkets, jewelry shops, wholesale markets), schools, residential property management, military, hotels (hotels, restaurants, office buildings), important material warehouses and security and other fields have become One of the modern management signs.
JIANGSU ARTSTYLE DECORATION MATERIALS CO..LTD , https://www.artstyledecor.com