Kiloamp Technology - The Global Provider of Electronic Security Protection
Kiloamp 2018-08-28 496
We all know that with the rapid development of China's economy and the continuous improvement of people's living standards, all industries are constantly making progress. Next, we will summarize the construction of the PDU monitoring system and the relevant content of the lightning factor.
1. Construction of PDU monitoring system:
The front part is mainly composed of a camera gun, a lens, a decoder, an optical transceiver, a pan/tilt head, a protective cover, and a bracket.
Transmission part: generally use wireless microwave, optical fiber, coaxial cable, twisted pair, power line, multi-core control line, take overhead, buried or along the wall to distribute power, video or audio, control signals. Terminal part: mainly consists of video distributor, picture splitter, monitor (wall), control equipment, video equipment (DVR), recorder and so on.
2. Lightning factor of cabinet PDU monitoring system:
Direct lightning strike: Lightning strikes directly on the camera in the open air, causing damage to the equipment; lightning strikes directly on the overhead cable to cause the cable to blow, and instantaneous high voltage is introduced along the lines to the low-potential device, causing equipment damage.
Lightning wave intrusion: When the power line, signal transmission line or metal pipeline entering the monitoring room of the monitoring system is struck by lightning or induced by lightning waves, electromagnetic induction occurs on the cable to generate high voltage; high voltage invades the device along these metal wires, resulting in The potential difference causes damage to the device.
Lightning induction: When lightning strikes the lightning rod, a strong transient electromagnetic field is generated around the down conductor. Monitoring equipment and transmission lines in the electromagnetic field will induce a large electromotive force, which is called electromagnetic induction. When a charged Thundercloud appears, the opposite charge to the Thundercloud is induced on the buildings and transmission lines below the Thundercloud. This phenomenon is called static induction, electromagnetic induction and electrostatic induction are called inductive lightning, also known as secondary lightning. It does not directly damage the equipment, but it is much more likely than a direct lightning strike.
Static electricity: The cabinet power supply is called "invisible killer" in the wording field. When you take off a clear coat in the dark, it will be accompanied by a "squeaky, squeaky" sound, and you will be exhausted by a lot of sparks. This is static electricity. The electrostatic voltage is as high as 3000V. Because it can't form current, it will not cause harm to people, but in the field of microelectronics, these devices have high integration, low power, low voltage, high input impedance, high sensitivity, and are extremely susceptible to electrostatic damage registration. Up to 250, according to the investigation, more than 60% of the damage of the camera is caused by static electricity.
In summary, we summarize the construction of the PDU monitoring system and the lightning factor have the above content, we must understand and analyze its related role.
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