RESEARCH ON THE DEVELOPMENT OF SHEET TYPE LOAD CELL AND ITS APPLICATIONS

研制了两种片式冲击力传感器：无摩擦式冲击力传感器和多触点式冲击力传感器。传感器结构由主体和盖构件组成。传感器主体由压电薄膜（PVDF）和硅橡胶制成。无接触冲击传感器由柔性盖构件包裹。在主体和盖构件之间设置有油层。多触点冲击传感器在主体的两个表面上具有实心盖板。实心盖板通过多点接触加载机制将冲击力传递给主体。通过用手锤、手柄和螺丝刀头施加多种冲击力的实验，检验了冲击传感器的性能。一个良好的线性关系之间施加的冲击力和传感器输出观察两个传感器。

Two kinds of sheet type impact force sensor are developed: frictionless impact sensor and multi-contact impact sensor. Sensor structure consists of a main body and cover member. Main body of the sensor is made from piezoelectric film (PVDF) and silicon rubber. Frictionless impact sensor is wrapped by a flexible cover member. Oil layer is placed in between the main body and cover member. Multi-contact impact sensor has solid cover plates on both surfaces of the main body. The solid cover plates play a role to transmit impact force to main body by a mechanism of multi-contact loading. The performance of the impact sensor is examined through experiment by applying several impact forces using hand hammer, hand-grip and screw driver head pressing. A good linear relationships between applied impact force and sensor output are observed for both sensors.