CONTACTLESS DEVICE FOR MEASUREMENT OF DISTANCE TO VARIOUS POINTS OF OBJECT SURFACE Russian patent published in 2010 - IPC G01B17/00 

FIELD: measurement equipment.

SUBSTANCE: invention is related to the field of metrology, in particular to facilities of contactless measurement of distances, dimensions and shape of objects. Technical result is achieved in device for measurement of distances to various points of object surface, comprising exciter of acoustic radiation arranged in the form of baton, having two acoustic radiators spaced in length and handle with start-up button, receiver of acoustic radiation arranged on three microphones fixed in triangle tops, shaper of pulse leading edge, inlet of which is connected to start-up button, and outlet is connected to generator, which may alternately be connected to each acoustic radiator, and also with three-channel electronic unit, each channel of which includes serially joined bandpass amplifier, comparator, counter of time intervals metre, besides electronic unit is connected to microphones and to common interface and computer. At the same time receiver of acoustic radiation is arranged in the form of tripod with platform, in plane of which there are three microphones arranged as installed in tops of isosceles right-angled triangle with length of legs of not more than 40 cm, which coincide with axes of coordinates x and y in measured space; over point of specified triangle medians crossing at the height of not more than 70 cm there is a hinged joint installed with the help of stand, on which in the middle point between acoustic radiators there is baton fixed, and on baton end opposite to handle with button there is computerised laser measure tape installed, optical axis of which lies on the same straight line with geometric centres of acoustic radiators of baton, besides measure tape is joined to computer by means of communication cable.

EFFECT: increased distance of device action, provision of contactless method for scanning of measured points on object surface, simplified structural design of device in the form of compact instrument, which does not have spaced composite components - baton and antenna.

3 dwg