Detection method, system, readable storage medium and equipment for elevator trapped event
A detection method and elevator technology, applied in transportation and packaging, image analysis, elevators, etc., can solve problems such as low accuracy and achieve the effect of improving accuracy
Active Publication Date: 2019-05-21
HITACHI BUILDING TECH GUANGZHOU CO LTD
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[0004] Based on this, it is necessary to provide a detection method, system, readable storage medium and equipment for an elevator trapped event in view of the low accuracy of the traditional elevator trapped event detection method
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[0030] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and do not limit the protection scope of the present invention.
[0031] see figure 1 As shown in FIG. 1 , it is a schematic flowchart of a detection method for an elevator trapped event according to an embodiment of the present invention. The detection method of the elevator trapped event in this embodiment comprises the following steps:
[0032] Step S101: when the elevator is in the idle state, acquire the background image inside the elevator car;
[0033] In this step, the idle standby state refers to the state where the elevator stays on a certain floor when it is running normally, and the elevator does not receive the internal ...
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The invention relates to a method and system for detecting a passenger trapping accident in an elevator. Firstly, when the elevator is in an idle to-be-called state, a background image in an elevator car is obtained, and the positions of static pixel points in the background image are determined; then, when the elevator is in a fault state, a current image in the elevator car is obtained, and differential treatment is conducted on the pixel value of the background image and the pixel value of the current image to obtain a differential image; and pixel points to be used are selected from the differential image according to the positions of the static pixel points and a first threshold value, and it is judged that the passenger trapping accident in the elevator occurs when the area of the region where the pixel points to be used are located is larger than a second threshold value. The positions of the static pixel points are determined by utilizing the background image, the pixel points to be used in the differential image are selected according to the positions of the static pixel points, multimedia equipment playing picture information contained in the differential image can be removed, important factors affecting judgment of the passenger trapping accident in the elevator are excluded, and thus detection accuracy for the passenger trapping accident in the elevator is improved.
Description
technical field [0001] The invention relates to the technical field of elevator detection, in particular to a detection method, system, readable storage medium and equipment for an elevator trapped event. Background technique [0002] During the actual use of the elevator, sometimes the elevator trapping event occurs due to unpredictable factors, which may endanger the life safety of the people in the elevator, so the detection of the elevator trapping event is particularly important. [0003] At present, the detection of elevator trapped people is mostly carried out through video analysis and detection. The algorithm of video analysis and detection is relatively complex, with a large amount of calculation, and it needs to be equipped with equipment with high computing power to realize it. Moreover, multimedia equipment is usually installed in elevators to play advertising videos. People will appear in advertising videos. The video analysis and detection used Video capture ...
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IPC IPC(8): B66B5/00G06T7/254
CPCB66B5/0012G06T7/254
Inventor 李文海江荣钿黄国苏郭雅萍李良庄旭强章飞陈彦明
Owner HITACHI BUILDING TECH GUANGZHOU CO LTD