Photoelectric-piezoelectric velocity and impact sensor

摘要: A photoelectric-piezoelectric velocity and impact sensor has a plurality of photoelectric light sources associated photodetectors disposed on axes defining an array beams. first electronic circuit is operatively coupled to the for generating signal representative moment in time when at least one beam broken by projectile passing through array. substantially planar transducer coplanar with spaced apart from strikes after second responsive provided transducer. calculating as function difference between signals. The may be divided into distinct independent zones, each adapted generate only struck projectile. If third zone