Safety device for elevator

Abstract

Provide is a safety device for an elevator, not only capable of detecting the rope-shaped foreign bodies with fine diameter and the band-shaped rope-shaped foreign bodies in real time, but also capable of detecting the rope-shaped foreign bodies before the elevator door begin to close. The safety device of the elevator has light reflection parts, a lighting part and camera and an image processingunit, wherein the light reflection parts are respectively arranged on the end face of the elevator door and the threshold surface, and emit the light to the same direction with the light incident direction, the lighting part and camera is arranged at the upper portion of the gateway of the elevator, the image processing unit is used for processing the image obtained by the camera, the safety device of the elevator is such configured that the light of the lighting part is reflected by the light reflection part, the camera obtains an image comprising the end face of the elevator door and the threshold surface, the image is divided into two areas by the image processing unit, namely an area lighter than the prescribed threshold value and an area darker than the prescribed threshold value, and when the area lighter than the prescribed threshold value is separated, the foreign bodies is detected.

Description

technical field [0001] The invention relates to an elevator safety device capable of avoiding danger at an elevator entrance and exit provided with an elevator door, in particular to an elevator safety device capable of preventing accidents such as rope-shaped foreign objects such as pet leashes being caught by the elevator door. Background technique [0002] In order to prevent passengers getting on and off the elevator or passengers' belongings from being caught by the elevator doors when the elevator doors are closed, detection rods called safety boots are installed at the ends of the elevator doors. When a passenger touches the end of the elevator door, the safety boots are pressed toward the opening direction of the elevator door, thereby stopping the closing operation of the elevator door and opening again, thereby preventing accidents in which passengers are caught. [0003] However, it is difficult for the safety boots to detect such small-diameter rope-shaped foreig...

AI Technical Summary

Problems solved by technology

In addition, when the elevator door is closing, if passengers have noticed that the rope-like object is about to be caught by the elevator door, since the elevator door will continue to close before the safety device detects the foreign object, there will be Questions Passengers Are Disturbed

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