Width measurement system using CCD camera and error compensation device

摘要

SUMMARY OF THE INVENTION An object of the present invention is to provide a width measuring device capable of measuring an accurate width irrespective of a thickness of a measurement object by compensating for a measurement error occurring when using a camera.;The width measuring apparatus of the present invention includes a camera 11 for imaging the width of a measurement object, a frame grabber 12 for measuring the signal of the camera 11 in units of frames, and a frame in the frame grabber 12. An arithmetic unit 13 for calculating the width t of the measurement target object by using the thickness t of the measurement target object previously measured and providing the information provided in units and the following equation, and a measurement target object calculated by the arithmetic unit 13 It consists of the display part 14 which displays the width of.;W = (x1 + x2) / H * (H-t);Here, x1 and x2 are respective distances from the point of the measurement object where the centerline of the camera is located to both ends thereof, and H is the distance from the camera to the bottom surface of the measurement object.