System and method for monitoring operation state of elevator car

Abstract

The invention discloses a system and method for monitoring the operation state of an elevator car. The system comprises an elevator car operation state intelligent sensing unit, a signal acquiring and processing unit and a wireless communication unit. The method comprises the following steps of: sensing an accelerated speed of the elevator car and / or sensing a distance between the elevator car and a certain fixed reference system in a shaft; acquiring an accelerated speed signal of the elevator car and / or a distance signal between the elevator car and the certain fixed reference system in the shaft; carrying out state calculation and processing to obtain real-time operation state parameters of the elevator car; and carrying out intelligent monitoring algorithm and intelligent identification algorithm according to the real-time operation state parameters to obtain the real-time operation state of the elevator car. The system and method disclosed by the invention can judge the real-time operation direction (ascending, stopping and descending) of an elevator and judge whether the elevator operates at an over speed through intelligent monitoring, identification and estimation; the real-time flat bed floor number of the elevator car or the distance from the normal flat bed position of a certain floor layer can be obtained to intelligently identify the fault stopping of the elevator and an overhauling state; and the system and the method can evaluate the comfort level of the elevator, estimate the elevator risk, predicate faults and the like.

Description

technical field [0001] The invention relates to the monitoring of the running state of special electromechanical equipment, in particular to a system and method for monitoring the running state of an elevator car. Background technique [0002] The safe operation of elevators is related to public safety and has always been the focus of the elevator industry. In recent years, the number of elevators in my country has increased rapidly. In 2011, the number of elevators in the country has exceeded 1.6 million, and it is expected to maintain an annual growth rate of 15% in the next 10 years. Data statistics show that in recent years, there have been more and more accidents in which people are trapped in elevators nationwide, and there are serious safety hazards. The safe operation of elevators has been widely concerned. [0003] At present, the safety guarantee of elevators is mainly based on passive safety technology means, that is, the regular inspection of the quality super...

AI Technical Summary

Problems solved by technology

[0004] At present, the elevator safety monitoring technology has problems such as passive monitoring technology, low degree of informatization, poor real-time performance, insufficient inspection and maintenance personnel, and inspection capabilities cannot meet the needs of the rapid growth of the number of elevators.

Images