| 摘要 |
The invention relates to a device and a method for the ultrasound surveillance of a predetermined area, especially of a closable opening area of a vehicle. The device comprises at least two ultrasound transceivers (A, B) that are interspaced and arranged relative each other such that their detection areas (SA, SB) overlap and cover a surveillance area (4) which can be determined, every transceiver being within the detection area of at least one other transceiver. The device further comprises a control/evaluation unit designed to control the transceivers to obtain echograms for at least a reflective operation and to evaluate the echograms obtained from the transceivers for the presence of objects in the surveillance area, said evaluation comprising a correlating comparison of at least one echogram obtained in the reflective operation of one of the transceivers with at least one echogram obtained in the reflective operation of one of the other transceivers. The device and method are used e.g. for the pinch protection surveillance of closable window, door and/or sunroof areas of vehicles. |
