• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2016, Vol. 52 ›› Issue (2): 82-90.doi: 10.3901/JME.2016.02.082

• 仪器科学与技术 • 上一篇    下一篇

高速机械系统运动特性的实时视觉检测技术研究

王耀东,  朱力强,  史红梅,  郭保青   

  1. 1. 北京交通大学机械与电子控制工程学院  北京  100044;
    2. 北京交通大学轨道交通控制与安全国家重点实验室  北京  100044
  • 收稿日期:2015-05-10 修回日期:2015-11-10 出版日期:2016-01-15 发布日期:2016-01-15
  • 通讯作者: 王耀东,男,1982年出生,博士,讲师。主要研究方向为图像处理与视觉检测技术在轨道交通安全检测中的应用。 E-mail:ydwang@bjtu.edu.cn
  • 基金资助:
    留学回国人员基金(M15C300010)和中国铁路总公司科技研究开发计划课题(2014G009-G)资助项目

Research on Real-time Vision Detection Technology for Motion Feature of High-speed Mechanical System

WANG Yaodong,  ZHU Liqiang,  SHI Hongmei,  GUO Baoqing   

  1. 1. School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044;
    2. State Key Laboratory of Rail Traffic Control and Safety, Beijing Jiaotong University, Beijing 100044
  • Received:2015-05-10 Revised:2015-11-10 Online:2016-01-15 Published:2016-01-15

摘要: 介绍一种利用高速视觉传感器,对机械系统高速运动进行实时运动特性提取的技术,并搭建高速视觉检测系统,可以对复杂的高速机械设备进行长时间、无接触的运动频率检测。本技术将高速相机视为多传感器系统,对预存储的多周期高帧率图像进行离线处理,设计周期运动特性关键像素点提取算法,以这些像素点为固定的多个子传感器,将图像简化为一维向量,并建立周期运动特性样本序列数据库,实现基于视觉平台的高速机械运动相位和频率检测技术。为验证算法的有效性和系统的稳定性,利用步进电动机带动的旋转装置和缝纫机的机械运动部分进行试验,结果证明了本算法和系统可以正确的提取周期运动特性关键像素点,建立样本数据库,完成高速实时视觉检测。

关键词: 高速相机, 高速运动, 视觉传感器, 视觉检测, 运动特性

Abstract: A high-speed image sensor based high-speed image processing algorithm is presented, which can real-time detect the period motion feature from mechanical system high-speed motion, and builds a high-speed vision system which can long-term non-contact calculate the motion frequency of complex high-speed mechanical devices. This study considers the high-speed camera as multi-sensors, and perform offline image processing for multi-period high-frame-rate images. Based on the selected key pixels considered as the multi-sensors, converting the images to one dimension vectors, period phase reference-images-sequence is created from pre-sotred original image data. To verify the algorithm and system, this study utilizes a rotation device drove by stepper motor and a mechanical motion of sewing machine for experiments. Experimental results confirm that the algorithms and system can select the key feature pixels, create reference data, and finish the high-speed real-time vision detection for high-speed motion.

Key words: high-speed camera, high-speed motion, motion feature, vision detection, vision sensor

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