Dart target disc with automatic hit display - has piezoelectric contact system behind frame segments for hit display

摘要

The target disc contains a frame (11) with segment (6), as well as the automatic hit display. Behind the segments is located a piezoelectric contact system (3-5) for hit display. Pref. the piezoelectric contact system lies between the segments and a baseplate (2). The piezoelectric contact system typically consists of a conductive plate (3), forming a common electrode, a piezoelectric foil (4), a matrix circuit board (5). The piezoelectric foil may be of a partly crystalline polymer. The frame consists of spokes and an annular rim. ADVANTAGE - Simple design and reliable hit display.