Monitoring front-end

1、 Ordinary camera + video server. The ordinary camera can be an analogue camera or a digital camera. The original video signal is transmitted to the video server, encoded by the video server and then transmitted to other devices via the network with TCP/IP protocol.
2、 Webcam. Webcam is an advanced camera device that integrates video recording, video encoding and web services, and has a TCP/IP protocol stack embedded in it. It can be directly connected to the network.
3、 Usb camera uses a local ordinary USB camera as the surveillance video capture device, locally install the software, configure the parameter files, automatically open the camera every time the machine is turned on, and submit the local IP address, local user name and other necessary parameter information to the remote web server according to the user number. 4.
4. The machine where the camera is installed sets a port number to be used for remote connection. If there are as many cameras on one IP you can change the port number to connect to different cameras (I have seen this done with the WEB)
5. make the magic of multi-party monitoring from one computer!
6. if the client's network is disconnected, it can automatically resubmit IP and other configuration information when the network is restored. 4. the local software can record local video to the local hard disk and can play back the video.)

Frequently Asked Questions
According to the security design and construction norms, regulations and standards issued by the relevant state departments in recent years, the security engineering
Based on the design and construction experience, combined with the development of security technology, new technology, new product technical requirements, in line with the service to the community, the user first purpose
Technology of indoor wiring
Indoor wiring should not only be safe and reliable, but also to line layout reasonable, neat, solid installation.
The use of wire, its rated voltage should be greater than the working voltage of the line; wire insulation in line with the way the line is installed and laid in the environmental conditions. The cross-sectional area of the conductor should be able to meet the requirements of power supply and mechanical strength.
Wiring should be avoided as far as possible when the wire has joints. Unless a joint is not possible, the joint must be crimped or soldered. Wire connections and branches should not be subjected to mechanical forces.

1. Camera equipment - cameras, lenses, heads, guards, mounts
Transmission equipment - video/audio/control signal transmission optical transceiver 2.
3. Video switching and control equipment - array (including array keyboard)
4、Video storage - DVR (hard disk recorder), VCR cassette recorder
5、Video display - CRT monitor, LCD, DLP (spliced large screen)
Video transmission equipment
Direct video cable transmission
2. Analog video optical fiber transmission
3. Non-compressed digital video optical fiber transmission
Video surveillance system working principle
For video surveillance system, according to the different functions of the various parts of the system, the entire video surveillance system is divided into seven layers: performance layer, control layer, processing layer, transmission layer, implementation support layer, acquisition layer. Of course, due to the increasing integration of equipment, for some systems, some equipment may exist in the system as more than one layer at the same time.
I. Performance layer
The performance city is what we feel most intuitively, it shows the quality of the entire video surveillance system.
II. Processing layer
The processing layer, perhaps called the audio/video processing layer, distributes, amplifies, splits and so on the audio and video signals sent from the transmission layer, organically connecting the performance layer to the control layer. Audio and video distributor, audio and video amplifier, video splitter, audio and video switchers and other equipment belong to this layer.
Third, the transmission layer
The transmission layer is equivalent to the bloodline of the video surveillance system. In the small video surveillance system, we most common transmission layer equipment is video cable, audio cable, for remote monitoring systems, we often use RF lines, microwave, for remote monitoring, we usually use nteret this cheap carrier. It is worth mentioning that the emergence of a new transmission layer media a network cable / optical fiber. Most people have a misconception about digital security monitoring, they believe that the control layer using digital control of the video surveillance system is a digital video surveillance system, in fact, it is not. Pure digital video surveillance system transmission medium must be the network cable or optical fiber. Signal from the acquisition layer out, it has been modulated into a digital signal, digital signal in the current has tended to run on the network, theoretically no garment reduction, which ensures that the remote monitoring images without loss of display, which is analog transmission can not be compared. Of course, the return on high performance also requires high cost of investment, which is one of the most important reasons why pure digital video surveillance systems can not be popular.
IV. Execution layer
The implementation layer is the command object of our control instructions, at some point, it and we later said that the support of the sincere, collection layer is not very separate, we think the controlled object that is the implementation of the layer of equipment. For example: heads, lenses, decoders, balls, etc.