What equipment is included in a complete video surveillance?

First, network camera + camera bracket


Network camera, also known as IPC, IP Camera, is the main equipment for video image acquisition. The biggest advantage of network camera comparison analog camera is high definition. The resolution of network camera is high, and it can achieve high definition effect. The resolution of network camera is 130. Megapixels, 2 million pixels, 3 million pixels, etc.

Second, the network high-definition DVR

The main purpose of the network HD DVR is to realize centralized management, device search, image preview, centralized recording, video playback and other functions for the front-end network camera, using embedded Linux system. Therefore, in order to ensure the recording storage time, the network HD DVR generally supports multiple bays.

Third, monitor the hard disk

The main purpose of monitoring the hard disk is to store the video recording and install it in the network HD DVR. Due to the high resolution of the network camera and the large code stream, the storage capacity per unit time is much larger than that of the analog monitor. Therefore, the capacity of the hard disk is high. At the same time, since the video requires 24 hours of continuous recording, the quality requirements of the hard disk are also high, so it is recommended to select a large-capacity monitoring-class hard disk in the digital network monitoring. The current hard disk specifications are generally 4T, 6T, 10T and so on.

Fourth, the display

The display is mainly used to display video images on the network HD DVR, and is connected to the network HD DVR via VGA or HDMI interface.

Can meet the most basic video call needs – Logitech Logitech C170 webcam

When I chose it, I wanted to buy a cheap one. I thought that I used to use the camera to occasionally have no sound or no image. I have to re-plug the various egg pains or choose a brand. Finally, I chose the cheapest Logitech. Logitech C170 webcam , when buying black special price 69 yuan.
It took more than two months to be pretty good. I didn’t have any problems. When I used the camera, I used most of the c270 files. I didn’t find the experience of using c170, so let me send one myself.

A lot of Logitech cameras are almost the same shape, and the support method is the same. When I buy it, I think it would be enough to buy the lowest end of my small water pipe upload and QQ video restrictions. Anyway, I can see clearly if the person hears clearly, even if it is qualified, After getting the hand, unpacking the box for half a day results in a camera body + a few sheets of paper, Logitech Webcam Software, this has to go down

A usb interface can be used, but it is recommended to install a Logitech Webcam Software. Sometimes it is more convenient to take a picture with the camera. Compared to the c270, the c170 does not have any filters and special effects.

There are two installation methods. The bracket has two joints that can move like the following picture to support the camera on the table. The red circle has a green bar indicator, which will light up when the camera works. Being filmed.

Video surveillance system installation and construction basics

The basic knowledge of the installation and construction of video surveillance system, video surveillance is the first system that needs to be mastered for the newcomers who have just entered the line. The installation of video surveillance system is the most basic skill. The weak newcomers can take this. The article is familiar and used in practice to fully grasp the video surveillance system.
First, cable selection and tool preparation

1. Video cable: SYV75-3 line transmission within 300 meters, 75-5 line transmission within 500 meters, 75-7 line can transmit 800 meters; more than 500 meters distance, it is necessary to consider the use of “optical cable”. Also, pay attention to the quality of the “coaxial cable.
2, power cord: to choose “flame retardant” cable, the skin is strong, under the premise of cost, try to use thick points to reduce the attenuation of the power supply.
3, twisted pair: cat5e or cat6
4, control line: generally use “with shielding” 2 * 1.0 cable, RVVP2 * 1.0.
5, threading pipe: generally use “PVC pipe” can be, to “buried, explosion-proof” project, you must choose “galvanized” steel pipe.
Preparation tools:

Electrician knife, ladder, electric iron, one-word screwdriver, cross screwdriver, needle-nosed pliers, impact drill, level ruler, pull wire, wire drop, wire stripper, ink line, lip clamp, digital multimeter or pointer multimeter, 500V Insulation shaker, cable clamp
Prepare the auxiliary materials:
Plastic expansion tube, machine screw, flat washer, spring washer, terminal block, drill bit, solder, flux, insulating tape, plastic tape, crystal head, various joints, etc.
installation steps:
Pre-installation test, camera installation, central terminal equipment installation, commissioning

Second, the camera style is divided into fixed camera, high-speed ball machine and PTZ camera, hemisphere machine and other three we will talk about the mainstream.
Fixed camera installation
1. According to the actual situation of the site, choose the installation method, the outdoor pole is used, the horizontal bracket is installed, the indoor horizontal wall bracket installation or ceiling lifting is installed, and the universal steering clamp is installed on the bracket, and the connection of the universal steering clamp and the horizontal bracket is plated. Zinc screws are fixed.
2. If the pole is installed, the height of the pole is not less than 3.5 meters according to the field of view. The thickness of the fixed steel plate of the pole is not less than 8mm. The basic embedded parts are made of 16mm threaded round steel, the height is 500mm and the width is 200mm. The mesh structure. In the installation position, excavate the soil, put the embedded parts into the ground, the height is 70mm above the ground, and then pour the cement with the label 1:1. When pouring, the threaded part higher than the ground part is made of insulating tape. Bandaging, the monitoring pole can be installed after 4-5 days.
3. Install the pole. When installing, be careful to remove the paint on the surface of the pole. Fix it with a 16mm nut. Add a washer and a spring between the nut and the screw. The height of the screw is not more than 10mm. The excess is cut with a cutter. After the fixing is completed, apply anti-rust paint on the screws and screws. After the anti-rust paint is dry, apply the same paint as the vertical bar.
4. Fix the bracket with galvanized screws on the top of the pole, fix the bottom cover of the shield on the universal movable clamp on the bracket, and insert the video cable and the power cable into the protective cover. The cable and the protective cover are sealed by a sealing ring. The bare wire between the shield and the pole is protected with a 16mm plastic hose. The analog monitor is installed on the video line to solder the BNC head, fix the tested camera, plug in the BNC head and the lotus head of the power supply, and cut off the 220V power supply before plugging in the power. Secure the top cover of the shield with screws, but do not screw all the screws. Digital monitoring twisted pair made crystal head (RJ45).