Piezoelectric force sensor

摘要

A piezoelectric force sensor is proposed in which a piezoelectric plate (1) has an electrode (4, 5) on the upper side and lower side, respectively. One of the electrodes (4, 5) is connected electrically via a conductive track (20, 21). In the event of a breakage of the piezoelectric plate (1), the conductive track (20, 21) is interrupted and the remaining residual capacitance of the conductive track (20, 21) becomes so small that reliable detection of the breakage is possible (Figure 2).