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    • 3. 发明专利
    • RELATIVE POSITION MEASURING DEVICE
    • JPH0912155A
    • 1997-01-14
    • JP18218595
    • 1995-06-26
    • KAWASAKI HEAVY IND LTD
    • ENOMOTO MASAYUKIUEDA SUMIHIROKANAMARU TAKAOFURUTA MAMORUNAKAGAMI YUGONAKANO TAKASHI
    • B65G67/60B65G67/62G01S17/08
    • PURPOSE: To always grasp relative position relation between a hatch and a vertical boom by arranging a CCD camera and a light-wave range finder so that an aiming direction can be substantially same and measuring position relation to a object from the aiming direction by which the CCD camera can anticipate a prescribed object and a distance measurement value found out by the light-wave range finder. CONSTITUTION: A detection part 2 provided with a light-wave range finder, a CCD camera and an electric stand for adjusting the light axis direction of the camera is mounted on the upper end of a vertical boom 47. The CCD camera is controlled so as to aim an edge 61 of a hatch 59. The detection part 2 is provided with an image processing part and a control part and posture of an electric stand is controlled so that image of the edge 61 can always be in the center of a picture and a relative position measuring device is composed of an automatic tracking type distance sensor. The detection part 2 is provided by every one respectively for the edges 61 of four sides of the hatch 59 and a relative position for the hatch 44 of the vertical boom 48 is found out from the relative position relation to each edge 61 of the detection part 2.