FIELD: measurement of distance to various points of object surface.
SUBSTANCE: the device has an exciter of acoustic radiation, receiver of acoustic radiation, made of three microphones fastened in the vertices of a triangle whose sides are formed by rigid rods, shaper of the pulse leading-edge, as well as a three-channel electronic unit, whose each channel includes series-connected bandpass filter, comparator, time interval counter and is connected to common interface and computer, the exciter of acoustic radiation is made in the form of a rod engageable with the point of the surface of the object under measurement and having a sharpened adapter and a handle with a start button, two acoustic radiators spaced in length are fastened on the rod, they represent hollow spheres of piezoceramics, whose inner and outer surfaces are provided with metallized electrodes.
EFFECT: enhanced reliability of examined measuring equipment, simplified design and lowering of price.
1 dwg
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SU1835048A3 |
