Elevator anti-pinch method and system based on image processing

Abstract

The invention discloses an elevator anti-pinch method and system based on image processing. The elevator anti-pinch method comprises the following specific steps that S2, analog signals collected by a camera are converted into digital signals through a video collecting rod, and then the digital signals are transmitted to a main controller to be processed; S3, acquired image information is processed by an image preprocessing module; and S4, edge processing is performed on a preprocessed image area R1 through an edge image processing module. According to the method and the system, the image preprocessing module is arranged to process the collected image, remove noisy points and enhance the image, the image area R1 is extracted through an image edge self-adaptive extraction unit, most of the areas which cannot provide any information for the anti-pinch function to be realized are removed, only the image area R1 with the size of 50*700 is analyzed, the characteristic change of the elevator door image area is analyzed in real time, the purpose of detecting obstacles is achieved, the calculation amount can be reduced, the processing efficiency is improved, the remarkable characteristics of the image can be reserved, and the anti-pinch function can be achieved conveniently.

Description

technical field [0001] The invention relates to elevator anti-trapping, in particular to an elevator anti-pinch method and system based on image processing, and belongs to the technical field of elevator protection. Background technique [0002] As the main means of transportation in high-rise buildings, elevators are widely used in people's daily life. During the operation of the elevator, the elevator door clamps passengers or their belongings from time to time, so the elevator anti-clamping treatment is required. The specific working principle is as follows: through the infrared emitting tube and receiving tube installed on both sides of the elevator door. The infrared rays emitted by the emission tube form multi-channel scanning. When an obstacle blocks the infrared rays, the switch signal is transmitted to the control system, and the control system controls the elevator door to reopen until the passenger or obstacle leaves the area. The door can be closed normally, so ...

AI Technical Summary

Problems solved by technology

[0003] At present, contact touch panels and infrared light curtains are the most commonly used anti-pinch methods for elevator doors. The former belongs to contact detection, which cannot realize pre-judgment and has poor security; the latter belongs to non-contact detection and uses through-beam infrared detection. Therefore, how to further improve the speed and accuracy of elevator door anti-trapping, it is necessary to adopt the latest technology and standards, so as to reduce accidents of elevator jamming Probability of Risk Occurrence

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