Wuxi remote monitoring The installation company summarized that the lightning attack can be divided into two attack methods, direct lightning and magnetic induction lightning. To put it bluntly, lightning strikes the surveillance camera immediately. This kind of lightning strike method causes serious damage, but the probability of occurrence is relatively small; Magnetic induction lightning is called secondary lightning, which is divided into two methods: magnetic effect of current and electrostatic induction. When lightning strikes at the lightning protection grounding point, the surrounding of the electrode connecting line under the lightning protection grounding will cause a magnetic field with strong instantaneous speed. The monitoring system and coaxial cable in the magnetic field will magnetically induce a large induced electromotive force, which is called the magnetic effect of current.
When the lightning cloud appears in the air of the transmission line, the transmission line will magnetically sense the positive charge in reverse with the lightning cloud, which is called electrostatic induction. The damage caused by magnetic induction lightning is not as large as that caused by direct lightning strike, but the probability of occurrence is very high. These two lightning attack methods also become two aspects that the monitoring system must prevent.
Security monitoring The system can be grounded for lightning protection or make the whole equipment within the reasonable protection scope. For front-end machines and equipment that are already within the protection scope of other lightning arresters or the original lightning arresting system of multi-storey buildings, the safety protection of direct lightning strike can generally be no longer considered; For front-end machines and equipment that are not within the protection scope of all lightning protection systems, the problem of direct lightning protection should be considered.
There are two types of front-end machines and equipment in the Wuxi remote monitoring system: outdoor and indoor. Machines and equipment installed in the room are generally not easy to be directly struck by lightning. However, most of the machines and equipment installed outdoors are located in relatively wide areas, and the risk of direct lightning strikes is high. Therefore, it is necessary to consider the problem of direct lightning protection.
1、 The name of the equipment required for home monitoring is as follows:
1. Multiple surveillance cameras or surveillance cameras (multiple surveillance cameras can be purchased if multiple interfaces are needed).
2. Camera bracket and surveillance camera adapter (one surveillance camera is equipped with one support bracket and one power supply plug adapter).
3. One video camera (there are four channels, eight channels, etc., which is the meaning of many surveillance cameras. For example, the four channel video camera can be connected to four surveillance cameras.)
4. One computer hard disk above 3.5-inch 1T (for storing real-time monitoring video documents, usually one surveillance camera occupies 30G of upper and lower hard disk space every day).
5. Multiple network cables.
6. 5 or 8 Switch One.
7. A VGA or HDMI or DP mobile phone charging cable (used to connect the camera to the display screen).
2、 Detailed introduction to the installation method of home clothes monitoring:
1. It is necessary to check the wiring of the surveillance camera and the position where the surveillance camera is fixed. There are two wire sockets on the surveillance camera, one is the RJ45 network interface for data transmission, and the other is the power supply plug socket of the surveillance camera.
2. At the beginning of connecting the facilities, install the computer hard disk into the camera, plug in the network cable on each surveillance camera and connect it to the network switch, and at the end, connect the network switch and the camera with network cable in series and plug in the power supply plug of each surveillance camera.
After all routes are connected, the computer mouse can immediately manipulate the interface on the display screen. For example, most simple real-time monitoring does not need to set IP. Click the strongly recommended default setting on the display screen. If you want to browse the monitoring screen by mobile phone, just connect the network switch to the wireless route Router After connecting with the network switch, you can download the computer monitoring software for free on the mobile phone immediately. Usually, there are download methods and web page links relative to Internet viewing software in the camera.
