ARRANGEMENT AND METHOD FOR DETECTING AN OBJECT WHICH IS ARRANGED ON A BODY, IN PARTICULAR FOR CARRYING OUT A SECURITY CHECK

摘要

The invention relates to an arrangement (10) and a method for detecting an object (18) which is arranged on a body (14). The arrangement comprises a vibration device (12) which causes the body (14) to vibrate mechanically at a predetermined vibration frequency and with a predetermined vibration phase, an emitting device (20) which emits coherent electromagnetic detection radiation (26) in the direction of the body (14), the radiation frequency of which is selected in such a manner that it is at least partially reflected by the body (14) and the object (18) to be detected, a receiving device (30) which receives the radiation (28) reflected by the body (14) and the object (18), and an evaluation device (32) which filters the components at the predetermined vibration frequency from the received radiation (28) and evaluates them with regard to their vibration phase difference to the predetermined vibration phase.