Elevator door auxiliary anti-clamping method and system

Abstract

The invention discloses an elevator door auxiliary anti-clamping method and a system. The real-time images of the door edge and the threshold of an elevator are obtained by a high-definition camera arranged just above the elevator door, wherein a diffuse reflection surface layer is arranged on the surface of the elevator, whether the elevator door is clamped with foreign objects or not is judged by an image processing method, and corresponding safe control is carried out to the elevator door by a control system.

Description

technical field [0001] The invention relates to an elevator door anti-pinch method and system, in particular to an elevator door auxiliary anti-pinch method and system. Background technique [0002] In order to prevent passengers or objects from being caught by the elevator doors when the elevator is closed, safety devices such as infrared detection are usually installed in the elevator doors. When passengers are caught, the elevator doors usually stop closing and open again. However, none of the current detection equipment can detect thin foreign objects, such as people and dogs separating the two sides of the elevator door, and slender dog chains are difficult to detect. [0003] In response to the above problems, various countermeasures have been taken. For example, the patent application document whose application number is 20091074038.x discloses a safety device for an elevator, which uses a camera to collect the door closing status of the elevator door to determine wh...

AI Technical Summary

Problems solved by technology

However, this general method must be assisted by external light sources and other equipment such as beam splitters.

Because the elevator car is in a moving state, tiny vibrations are inevitable, and these vibrations will cause major changes in the route of light to optical devices such as beam splitters and light sources, so the accuracy of use is not high, and the equipment is complicated

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