With the popularization of wireless bridges, elevator monitoring systems are also being used one after another. This article will explain in detail how to monitor elevators and how to install wireless bridges in elevator shafts.
1. Elevator video surveillance
Elevator is an important closed public area of a building and a key channel for up and down access. Elevator video surveillance plays an important role in the security work of the entire area and is an indispensable and important part. Elevator video surveillance can grasp the situation in the elevator car in real time to ensure the safety of passengers.
Elevator surveillance video transmission can be divided into wired and wireless.
Wired transmission: The professional elevator accompanying cable is used, and the general accompanying cable is seriously damaged when used, and its life span is between one to two years. High-rise elevator cables have high requirements for tensile strength and electrical parameters, to prevent the cable from being stretched and deformed under its own weight, resulting in impedance mismatch and interference from the attenuation of the signal-to-noise ratio of the video signal. It is difficult to replace the accompanying cable again, the construction period is long, and the cost of replacing the accompanying cable is also high.
Wireless transmission: The wireless transmission adopts a point-to-point method. A transmitting point is installed on the car and a receiving point is installed at the end of the elevator shaft. The data can be freely transmitted when the elevator car is moving. The wireless transmission equipment is simple to install and has a lifespan of at least 3 years, and the bandwidth fully meets the transmission of high-definition surveillance video.
