低照度环境下采煤机摇臂角度测量方法

Rocker angle measurement method of shearer under low illumination environment

  • 摘要: 针对采煤机摇臂角度接触式测量方法在矿井复杂环境下应用存在磨损严重、故障率高等问题,提出一种低照度环境下采煤机摇臂角度测量方法,该方法将图像增强算法与单目视觉相结合,对采煤机摇臂角度进行非接触式测量。采用基于导向滤波的多尺度Retinex图像增强算法得到增强图像,对增强图像进行ROI提取、边缘检测、累计概率霍夫变换,求解出摄像机空间角度,由已标定的CCD摄像机进行坐标转换后输出真实角度。实验结果表明,该采煤机摇臂角度测量方法速度快,在对比度提升、噪声消除、细节增强方面表现较好,且测量准确,误差小于0.1°。

     

    Abstract: In view of problems of serious wear and high failure rate in application of contact method of rocker angle measurement of shearer in complex mine environment, an rocker angle measurement method of shearer under low illumination environment was proposed, which combines image enhancement algorithm and monocular vision for non-contact measurement of rocker angle of shearer. Multi-scale Retinex image enhancement algorithm based on guided filtering is used to obtain enhanced images. ROI extraction, edge detection and progressive probabilistic transform are performed on the enhanced image to get rocker angle in camera space, and calibrated CCD camera is used for coordinate conversion, and actual angle is output. The experimental results show that the rocker angle measurement method of shearer is fast and accurate, the error is less than 0.1°, and it has good performance in contrast enhancement, noise cancellation, detail enhancement.

     

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