Machine tools HS code classification

List of the contents of this article:

• 1, What is an analog video surveillance system?
• 2, How to use the video surveillance system?
• 3、 What are the main types of video surveillance systems?

What is an analog video surveillance system?

Video surveillance system is an integral part of the security prevention system. It is a comprehensive system with strong prevention ability. Video surveillance is widely used in many occasions because of its intuitive, convenient and rich information content.In recent years, with the rapid development of computers, networks, image processing and transmission technologies, video surveillance technology has also made great progress.

Analog monitoring refers to the traditional kind of monitoring transmitted by coaxial cable, which cannot achieve high-definition. For the analog monitoring system: stable function and low degree of intelligence. Moreover, the image and video are transmitted by cable, which is susceptible to environmental and man-made destruction. The operation interface is simple and the confidentiality is poor.

Analog monitoring system: This is a traditional monitoring system composed of video cables, hard disk recorder matrix and other equipment; AHD monitoring: Simply put, it is to convert analog signals into digital signals, and the transmission is still a video cable. Compared with ordinary analog cameras, the image is clearer. AHD is directly output by digital signals.

How to use the video surveillance system?

1. If it can't be played all the time, make sure whether there is a memory card in the camera or a hard disk in the video recorder. 2. If it is a plug-in camera, enter the setting interface to see if the status of the memory card is normal. If the memory card is damaged, replace the new card.

2. Plug in the power cord of the surveillance camera, open the monitoring software on the computer, and you can use it. The surveillance camera is connected to a computer with a video capture card through a video cable. The video capture card hardware and the software matching the card must be installed on the computer motherboard.

3. Connect the device: After installation, you need to connect the device, such as connecting the camera to the video recorder or network video server. Determine the monitoring area: First of all, it is necessary to determine the areas that need to be monitored, such as the door, corridor, office, etc.

4. Family monitoring video is a kind of home security monitoring system, which can remotely view real-time videos at home through mobile phones or computers. The following are the steps to turn on the Hejiaqin monitoring video: First, please make sure that you have successfully installed the Hejiaqin APP and log in to your Hejiaqin account on your mobile phone.

What are the main types of video surveillance systems?

1. The first generation of video surveillance is the traditional analog closed-circuit video surveillance system (CCTV). The second generation of video surveillance is the current "analog-digital" surveillance system (DVR). The third generation of video surveillance is the future full IP video surveillance system IPVS.

2. Single-head multi-tail system When the single-head multi-tail system monitors the same distributed target in multiple places, it selects cameras, transmission electrical (optical) cables, video distributors, etc. It is a camera that transmits image signals to many monitoring points, and the monitor at each point watches the image at the same time.

3. A kind of video surveillance point is mainly installed in key public areas, covering major roads, key areas, key parts, key places, etc.Frequency monitoring is usually funded by the government, and the public security video network in its jurisdiction is accessed nearby, and the video images are monitored and managed by the public security organs.

4. The monitoring system is mainly divided into four categories: front-end equipment, transmission equipment, main control equipment and display equipment. This article will introduce the specific contents of these four types of equipment in detail. Front-end equipment The front-end equipment mainly includes cameras, supplementary lights (2 types of infrared and white light), 12V power adapters, waterproof boxes, etc.

5. Hello, in general, the video surveillance system is composed of four major parts: camera, transmission, control and display.