Monitoring on the road is indispensable, road monitoring rod is generally installed outdoor surveillance camera a kind of material, today to introduce the installation of road monitoring rod should pay attention to what?
1. The outdoor chassis is designed as an open-air rainproof box.
The height of the chassis is 0.8 meters, the width is 0.6 meters, and the thickness is 0.45 meters. The protection level of the box reaches IP54 protection level. There must be a chassis foundation, the overall appearance, the surface spray obvious warning signs, the height of the chassis from the ground is not less than 30 cm).
2. Install the optical transceiver and monitoring power supply in the outdoor chassis.
The optical terminal adopts 1V+1D(one video + one reverse data) single channel optical terminal, with FC/ST interface, transmission distance: 0-30km; Optical wavelength is 1310/1550nm, frequency response is 5Hz ~ 8MHz, video format compatible with PAL, NTSC, SECAM, signal-to-noise ratio ≥70dB, voltage 1vP-75ω, video interface BNC, 8-bit linear digital PCM coding; Data RS-232, RS-422, RS-485 optional, bit error rate less than 10-9; Reserved voice interface with network management function. In addition, the chassis and vertical rod are grounded for unified lightning protection.
3. Lightning protection and grounding of front-end devices.
Lightning is known to be extremely destructive, with voltages up to millions of volts and instantaneous currents up to hundreds of thousands of amperes. The destructive consequences caused by lightning strikes are reflected in the following three levels: (1) equipment damage, casualties; ② The life of equipment or components is reduced; (3) Transmitted or stored signals, data (analog or digital) are interfered with or lost, and even make the electronic equipment produce misoperation and temporary paralysis or the entire system standstill.
There is little chance of direct lightning damage to the monitoring site. With the continuous development of modern electronic technology, the use of a large number of precision electronic equipment and networking, damage to a large number of electronic equipment the main culprit is inductive lightning overvoltage, operating overvoltage and lightning wave invasion overvoltage, every year a variety of communication control system or network due to lightning damage cases are common, which security monitoring system due to lightning damage caused by equipment, Automated monitoring failures often occur. The front-end camera is designed to be installed outdoors. In thunderstorm-prone areas, lightning protection systems must be designed and installed.
