Hit sensor for detection of hitting of targets made of e.g. plywood, has processing unit provided downstream to piezoelectric sensor and generating hitting signals during detection of resonance frequency

摘要

The hit sensor has a piezoelectric sensor provided in a housing (4), and an electronic processing unit provided downstream to the piezoelectric sensor. The housing is designed such that the housing exhibits resonance in a range of high harmonic wave of hitting excitation frequency. The electronic processing unit generating hitting signals during detection of resonance frequency. The hit sensor is arranged in a center at a horizontal support frame (2). The housing is made of aluminum cast. The processing unit exhibits an input stage with the resonance frequency.