CONTROLLED POINT OF OBJECT'S COORDINATES VIDEO MEASURING DEVICE Russian patent published in 2007 - IPC G01C15/00 

FIELD: geodesy.

SUBSTANCE: video measuring device can be used for measuring coordinates of working point of aerial. Video measuring device has measuring mark 2, mounted in working point of aerial 1, and video detector 3 mounted onto geodetic beacon 4. Measuring mark 2 has three measuring targets 5, 6 and 7 which all are disposed onto straight line. Distance form centers of edge measuring targets 5 and 7, being disposed equidistant from central measuring target 6, is calculated from relation of L=HM/F -d, where H is distance between measuring mark and video detector, M is effective size of photo-sensitive area of video detector's photoreceiver, F is focal length of objective of video detector, d is diameter of measuring targets. Video measuring device is provided with switch 8 of measuring targets. Switch is connected with electric supply bus and it also connected with edge measuring targets 5 and 7 and to central measuring target 6. Vibrations and bends of high structures like TV towers, smoke pipes, supports of bridge structures etc, can be measured.

EFFECT: improved precision of measurement.

1 dwg