Analysis of steel tape measuring device based on image processing technology
Aiming at the problem of high dependence on manual labor in the traditional steel tape detec-tion process in natural environment,a steel tape automatic calibration device based on image processing technology is designed.The device consists of a visual acquisition unit,a control unit,and a data pro-cessing unit.The visual acquisition unit is automatically controlled by a software program to collect image data,perform image preprocessing,extract the image detection area,and perform threshold segmenta-tion,Determine the position for line pattern detection,and finally calculate the indication error between the measured position of the tested steel tape and the standard steel tape.Based on the measurement un-certainty evaluation model,calculate the uncertainty component and obtain the expanded uncertainty of indication error U=0.06 mm,k=2.The device will effectively improve detection speed,accuracy,and reduce work intensity through automatic data processing.
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