PRESSURE SENSOR

摘要

A pressure sensor comprises a first and a second terminal for connecting it to a read-out circuit, a resistive conductor and at least two pressure-actuatable switching elements, which include a layer of intrinsically pressure-sensitive organic material or patches of intrinsically pressure-sensitive organic material. These at least two switching elements have different turn-on pressures, such that each of the at least two pressure-actuatable switching elements is in a substantially insulating state if an external pressure applied to the pressure sensor lies below the respective turn-on pressure and in a substantially conductive state if the external pressure applied to the pressure sensor lies above the respective turn-on pressure. The at least two pressure-actuatable switching elements and the resistive conductor are connected between the first and second terminal in such a way that an electrical resistance between the first and second terminal decreases when the pressure applied to the pressure sensor goes over one of the turn-on pressures.