Grindability is determined by comparing the results of the screening analysis of the material sample to the calibration line 通過把對磨后的樣品的篩析結(jié)果和校驗直線相比較來確定該物料能否被碾磨。
The calibration line is determined by using one set , i . e . 4 standard reference material samples with a different " hardgrove - index " of approx 校驗直線按照樣品的40 60 80 110h這四個標(biāo)準(zhǔn)的hardgrove指數(shù)來制定。
The computer acquires the image of dial gauge by high precision ccd video , after that the computer will process the dial gauge image by some image - processing algorithms such as image segmentations , edge searching , area segmentations and locating the pointer by the " circle " . at last the computer will recognise the dial pointer position and work out the precision of dial gauge in accordance with nation criterion of dial gauge . this study presents several optimum algorithms to realize quick recognition of the pointer and calibration lines of detected dial and improve the accuracy and real time quality of detecting 本系統(tǒng)由計算機控制步進電動機的運動,進而驅(qū)動指示表表針的運動,通過高精度ccd攝像機實時獲取表盤圖像數(shù)據(jù),同時進行表盤圖像的相關(guān)處理,包括閾值分割、邊緣檢測、圖像銳化以及區(qū)域分割和定心圓檢測等,最終快速識別出表盤指針?biāo)幬恢茫詈蟾鶕?jù)國家指示表類檢定規(guī)程所制定的算法檢定出指示表的各種精度,本系統(tǒng)所采用的圖像處理算法運算量少,速度快,從而大大提高了系統(tǒng)的實時性。
The study on the auto - detecting system of analog measuring instruments presents several optimum algorithms to realize the quick recognition of the dial pointer and calibration lines of detected dial . by using these efficiency algorithms , both the accuracy and the real - time quality have been improved 采用數(shù)字圖像處理技術(shù)進行指針式儀表的精度檢定可以大大提高檢定效率,提高檢定精度,減少人為因素干擾,使檢定過程更具客觀性,檢定結(jié)果更準(zhǔn)確,因此具有廣泛的市場前景。