| 摘要 |
A film-type pressure sensor (16) includes a carrier structure comprising a first carrier film (20), a second carrier film (22) and a spacer film (24) arranged between the first and second carrier films. One or more pressure-sensing cells (18) are disposed in the carrier structure, each of which comprises an electrode arrangement (28, 30) for producing an impedance change in response to a compressive force. An electrical interface (32) is provided for mechanically and electrically connecting the pressure sensor to an evaluation circuit (64). Some terminals (44.1-44.4, 46, 48) of the interface are connected with the electrode arrangements of the cells so as to allow them to be read out. One or more electrical components interconnect at least two of the terminals in pairs so as to form a combination of terminal pair impedances that represents coded information relating to the pressure sensor. When connected to the pressure sensor, the evaluation circuit may detect the combination and look up the encoded information. |
