The invention discloses an escalator drive chain extension early warning method and system. The method comprises the following steps: segmenting a first video stream into a plurality of first images; performing image processing on the plurality of first images to synthesize a first key frame image; extracting a first area feature and a first perimeter feature of the contour in the first key frame image, and constructing an abnormal jitter prediction model taking the area and the perimeter as features; performing image processing on the plurality of second images to synthesize a second key frame image; extracting a second area feature and a second perimeter feature of the contour in the second key frame image, inputting the second area feature and the second perimeter feature into the abnormal jitter prediction model, and judging whether the escalator has abnormal jitter or not; adopting a stereo matching method to obtain disparity map data of the drive chain image when the escalator stops running; obtaining the length of the driving chain; and obtaining early warning information, and sending the early warning information to the client. The driving chain can be prevented from being broken in advance, and the safety of the escalator is improved.

    本发明公开了一种自动扶梯驱动链伸长预警方法及系统,本方法通过将第一视频流分割为多张第一图像;对多张第一图像进行图像处理,合成第一关键帧图像;提取第一关键帧图像中轮廓的第一面积特征和第一周长特征,构建以面积和周长为特征的异常抖动预测模型;对多张第二图像进行图像处理,合成第二关键帧图像;提取第二关键帧图像中轮廓的第二面积特征和第二周长特征,将第二面积特征和第二周长特征输入至异常抖动预测模型,判断自动扶梯是否发生异常抖动;采用立体匹配方法获得自动扶梯停止运行时的驱动链图像的视差图数据;获得驱动链的长度;获得预警信息,并将预警信息发送至客户端。本发明能够提前预防驱动链断链,提高自动扶梯的安全性。


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    Title :

    Escalator driving chain extension early warning method and system


    Additional title:

    一种自动扶梯驱动链伸长预警方法及系统


    Contributors:
    XU SILIANG (author) / LI HAIJUN (author) / DING HAOCHENG (author) / XIE WENGUAN (author) / YANG YE (author) / WEN TAO (author) / RAO MEIWAN (author) / LIN BIN (author) / LIU XINMEI (author) / HE DONGSHAN (author)

    Publication date :

    2023-04-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G06V / B66B Aufzüge , ELEVATORS / G08B SIGNALLING OR CALLING SYSTEMS , Signalisier- oder Rufsysteme / H04N PICTORIAL COMMUNICATION, e.g. TELEVISION , Bildübertragung, z.B. Fernsehen



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