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Anti-pinch detection method and detection device for sliding door device

A technology of sliding door device and detection method, which is applied in the direction of transportation and packaging, elevators in buildings, etc., can solve problems such as complex structures, and achieve the effect of high reliability and reliable detection of obstacles

Active Publication Date: 2016-01-27
SHANGHAI MITSUBISHI ELEVATOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This detection method also cannot shield the failed part when the light emitter or the camera part fails.
And the implementation of this device needs to increase the door identification and camera adjustment drive mechanism, so the structure is more complicated

Method used

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  • Anti-pinch detection method and detection device for sliding door device
  • Anti-pinch detection method and detection device for sliding door device
  • Anti-pinch detection method and detection device for sliding door device

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Embodiment 1

[0057] Such as figure 2 Shown is embodiment 1 of the anti-pinch detection method of the sliding door device of the present invention, comprising the following steps:

[0058] Step 1 S1, image sampling;

[0059] The side light-emitting surface 9 and the lower light-emitting surface 10 are photographed and sampled by the camera unit 11 to obtain image data, and the image data is sent to the image processing and judging unit 22;

[0060] Step 2 S2, image data is converted into brightness data;

[0061] The RGB data of each pixel point in the image data is converted into luminance data by the image processing judgment unit 22; the image data can also be in formats such as YUV except the RGB format;

[0062] Step 3 S3, luminance data partitioning and counting;

[0063] The image processing judgment unit 22 partitions the luminance data according to certain rules, and then calculates the number of pixels meeting certain requirements;

[0064] Specific steps are as follows:

[...

Embodiment 2

[0077] Embodiment 2: the first three steps of this embodiment are the same as Embodiment 1, and the following methods can also be used in step four S4:

[0078] The door state detection unit 24 detects the state of the sliding doors 5,6, and then the detection result is sent to the image processing judgment unit 22; when the door state detection unit 24 detects that the sliding doors 5,6 are in closed state, the image processing judgment unit 22 performs The update of benchmark data; the update method is: compare the array α obtained by this sampling with the elements in the benchmark data array β one by one, if α i >β i , then β i Update to the latest n α i the average; if α i ≤β i , then β i update to alpha i ; Each element in the reference data array β corresponds to each element in the array α, and the initial value is a preset value;

[0079] When the door state detection unit 24 detects that the sliding doors 5 and 6 are in the state of the door opening process, t...

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Abstract

The invention discloses an anti-pinch detection method for a sliding door device. The method includes the steps: firstly, sampling an image; secondly, switching image data into brightness data; thirdly, partitioning and counting the brightness data; fourthly, updating reference data and judging a barrier. The anti-pinch detection method is applied to environments with high brightness such as a sightseeing elevator, and the barrier can be more reliably detected. When a lighting lamp strip or a video camera is partly faulted, normal operation of other parts cannot be affected by the faulted part, and the anti-pinch detection method can deal with bilateral narrow vibration of the lighting lamp strip on a horizontal plane. The invention further discloses an anti-pinch detection device for the sliding door device.

Description

technical field [0001] The invention relates to a detection method of a sliding door, in particular to an anti-clamping detection method of a sliding door device. The invention also relates to an anti-pinch detection device for a sliding door device. Background technique [0002] Sliding door devices need to detect obstacles at the entrance and exit. The existing sliding door obstacle detection method is mainly light curtain detection. [0003] Chinese invention patent CN200780049627 discloses a sliding door device and an elevator, which judges whether there is an obstacle based on whether the differential image obtained by subtracting the illuminated image data from the unlit image data of the light emitter is discontinuous, shortened or disappears . The disadvantages of this method are: it is easy to mistakenly detect the non-moving dust attached to the light-emitting surface as an obstacle; if the light emitter or camera fails partially, the failed part cannot be shiel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66B13/26
CPCB66B13/26
Inventor 张毅牛华荣
Owner SHANGHAI MITSUBISHI ELEVATOR CO LTD
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