Object motion sensing and measuring apparatus

Details Object motion sensing and measuring apparatus Object motion sensing and measuring apparatus

G - Physics

01

P

340/148.2

G01P 13/00 (2006.01) G01D 5/26 (2006.01)

Patent

CA 1305542

64159-1099 ABSTRACT OF THE DISCLOSURE An apparatus for sensing and measuring translational and rotational motion of an object, such as a gun barrel during a firing event, includes a pair of support boards attached in orthogonal relation on the object and a pair of elongated position sensitive detectors mounted in spaced relation to one another and in a common plane on each of the boards. The detectors have respective light sensitive axes oriented parallel. Also, electrical circuits are coupled to the detectors to produce bipolar output signals representative of the magnitude and direction of displacement of the positions of planar light beam impingement across the detector axes from zero rest position thereon such that separate measurement of translational motion and rotational motion of the object with respect to imaginary axes extending through the zero rest positions of and perpendicular to the sensitive axes of the pairs of detectors Can be derived therefrom. Laser assemblies are provided for generating stationary planar beams of light aligned to impinge across the light sensitive axes of the pairs of position sensitive detectors along their imaginary axes when the object whose motion is to be sensed and measured is at rest.

613042

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