| 摘要 |
PCT No. PCT/DE96/01691 Sec. 371 Date Jul. 20, 1998 Sec. 102(e) Date Jul. 20, 1998 PCT Filed Sep. 9, 1996 PCT Pub. No. WO97/09639 PCT Pub. Date Mar. 13, 1997The method for recording and monitoring of a partial space, specifically for determination of space occupancy in a vehicle and therefrom derivable activation and/or switching of accessory devices provides for the radiation of ultra sound from a sensor (5) with transmitter and receiver in the direction of the partial space. The return beam signal supplied by the receiver is passed to an evaluation unit and analyzed. Dependent thereon, accessory devices can be activated and/or switched. The sensor for the partial space (12) employs several transmitters (6) and several receivers (7). The return signals are recorded with respect to travel time difference, thus with respect to distance and/or with respect to signal contour determined by the amplitudes and evaluated with respect to object contour in the partial space (12).
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