压电薄膜力传感器及其牙咬力的测量应用研究

Piezoelectrical PVDF-foil force sensor and its biting force measurement research

本文介绍一种用于测量牙咬力的传感器-压电簿膜力传感器.它应用压电薄膜受到机械应力产生电极化,从而产生电荷的原理来测量牙咬力.这种压电薄膜厚度仅25μm,用它来作为传感器测量牙咬力时无咬合间隙,测量的值能反映出牙齿真实的咬力.

A new sensor,piezoelectrical PVDF foil for measuring physiological loads on teeth is presented.It uses piezoelectrical PVDF foil which will come to electrical polarization exerted by force and produce electric charges to measure tooth biting force.This kind of piezoelectrical foil is only 25μm thick.It allows measuring biting force without bite separation.The measured value can show the true physiological loading on teeth.