Elevator protection method based on TOF camera

Abstract

The invention discloses an elevator protection method based on a TOF camera. The TOF camera is mounted over an elevator door, through images collected by the TOF camera, different algorithms are adopted in a landing door and car door, the position close to an elevator car door and the elevator car door, whether an obstacle exists nearby the elevator door is judged, according to the judging result,corresponding action is carried out, safety run control over an elevator is achieved, accidents are prevented, and safety of a person or animals is ensured.

Description

technical field [0001] The invention relates to the technical field of elevator control, in particular to an elevator protection method based on a TOF camera. Background technique [0002] At present, the elevator light curtains used in real life are all based on the 2D plane emitted and received by infrared light diodes, and the protection range is only the plane of the elevator door. There are the following problems: [0003] (1) During the door closing process, if a person or object is close to the elevator door, it cannot provide a reverse door opening action, especially for baby strollers, people with reduced mobility, wheelchairs, surgical beds, forklifts, cargo trolleys, etc., which may cause "entrainment" or "collision" and other risks; [0004] (2) The detection effect on small objects, such as dog ropes, is poor; [0005] (3) Traditional light curtains cannot detect transparent objects; [0006] (4) On floors where there are no people waiting, after the elevator...

AI Technical Summary

Problems solved by technology

[0003] (1) During the door closing process, if a person or object is close to the elevator door, it cannot provide a reverse door opening action, especially for baby strollers, people with reduced mobility, wheelchairs, surgical beds, forklifts, cargo trolleys, etc., which may cause "entrainment" or "collision" and other risks;

[0004] (2) The detection effect on small objects, such as dog ropes, is poor;

[0005] (3) Traditional light curtains cannot detect transparent objects;

[0006] (4) On floors where there are no people waiting, after the elevator stops, the delay time is long and the elevator operation efficiency is low;

[0007] (5) The light curtain has the same length as the height of the elevator door, the installation process is troublesome, and the installation and transportation efficiency is low

[0008] (6) The hall door and car door cannot be protected

[0009] (7) It is impossible to judge whether the object is close to the movement trend

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