| 摘要 |
A device for indicating a pressure or force applied to, for example, push-buttons, door edge sensors, pressure sensitive doormats or position detecting equipment in general, the device comprising one or more channels (3, 6) in an elastic material. One or more of the channels (3) contain a sound transmitter/receiver combination (4, 5) with electric lead-ins, the combination establishing, in normal operation, a sound communication between the sound transmitter and the sound receiver. Upon application of an external force on the elastic material of the channel (3), the channel is compressed such that the sound communication is interrupted. |
