Detection method of instantaneous coal quantity of belt conveyor based on laser scanning
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摘要: 针对现有井下带式输送机煤量激光仪器检测方式未提出明确激光线提取方法的问题,提出了一种基于激光扫描的带式输送机瞬时煤量检测方法。通过数字摄像仪和激光仪器获取带式输送机上散煤的图像,利用Ohta颜色空间特性提取激光线轮廓,并进行基于索引表的激光线细化和连接处理;根据离线获取的基线和实时获取的激光线,采用梯形面积累积法计算散煤的截面面积,实时获取带式输送机的瞬时煤量。测试结果表明,该方法检测结果与实际煤量匹配,准确性高,实时性好。Abstract: In view of problem that existing coal quantity detection method with laser instrument does not propose a clear method for laser line extraction, a detection method of instantaneous coal quantity of belt conveyor based on laser scanning was proposed. Image of loose coal on belt conveyor is obtained by digital camera and laser instrument, and laser line profile is extracted by using characteristics of Ohta color space, then laser line thinning and connection processing based on index table are performed. According to offline acquired baseline and laser line acquired in real time, cross-sectional area of coal is calculated using trapezoidal area cumulative method, and instantaneous coal quantity of belt conveyor is obtained real-timely. Test results show that coal quantity detection result of the method matches actual coal quantity, and the method has high accuracy and good real-time performance.
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