Development of an Active Elevator Monitoring Device

摘要

Elevator safety gains more and more importance in nowadays, elevator monitoring device help to improve the safety state of elevator by detecting malfunction beforehand, and also help to facilitate the rescue work by sending fault signal immediately to rescue teams by GPRS. Guangzhou Special Equipment Inspection Institute which is an elevator safety inspection and research institute in Guangzhou city of China, devotes its effort to develop an active elevator monitoring device, its major feature lies in the utilized signal is the current sent to the frequency converter which is indirectly measured by an non-contact current sensor, through analyzing the change rate of the current and comparing with the recorded normal elevator running data, it can be obtained whether the elevator runs at normal state or malfunction state, this paper introduces the configuration and working principle of the developed device, experiment test results also are shown to validated the function of the device.