基于影像测量仪的试验筛自动测量方法

由于检测手段的限制,试验筛校准时一直存在着检测繁琐、准确度不高等缺点.为了提高检测精度,对基于影像测量仪的试验筛自动测量方法进行了研究.首先介绍了边缘点提取方法、网孔边缘拟合方法、网孔孔径计算方法和网孔自动搜索方法等;其次在影像测量仪上研发了试验筛自动测量软件验证该方法的有效性;最后通过与传统校准方法的对比,说明了影像测量仪在试验筛校准方面的优势,并探讨了试验筛网孔全检的可能性.

Research on Calibration Method for Test Sieves Based on Video Measuring Machine

Test sieves are usually used to particle size analysis. Since limit of test facility, complex testing and low accuracy are problems regularly in calibration of test sieves. A automatic calibration method for test sieves using video measuring machine is discussed in this paper in order to increase calibration precision. Firstly, some key technologies are introduced, such as edge detection, mesh edge line fitting, mesh width calculation. Secondly, a sieves calibraion software , which is developed on video measuring machine to prove effectiveness of methods. Thirdly, through comparing with traditional methods, the advantage of video measuring machine on test sieves calibration is discussed, and it maybe get the result of full inspection on every mesh of test sieves.