| 摘要 |
<p>Driving device (165a) for a contact transit sensor (105a) comprising logical means (220) for generating a status signal (Ss) indicating a free condition or a busy condition of the transit sensor (105a), comprising devices (SW) for producing a transient phenomenon in a circuit (Cd, 105a) containing the transit sensor (105a), a memory (225) for storing at least one first value (Sfi) indicating a waveshape (Lf) associated with the transient phenomenon produced with the transit sensor (105a) in free condition, and means (220, 215) for periodically detecting at least one second value (Si) corresponding to the at least one first value (Sfi), the logical means (220) generating the status signal (Ss) according to the result of a comparison between the at least one first value (Sfi) and the at least one second value (Si). <IMAGE></p> |
