Abstract: A method and system include at least one X-ray source for producing at least one X-ray beam, at least one detector assembly, at least one shutter, and a barcode reader. The shutter directs the at least one X-ray beam toward the detector assembly. The barcode reader is affixed, in a predetermined proximity, to the shutter for detecting a barcode on an object that is moved along the shutter thereby causing the shutter to be opened from a closed state and/or fully closed once the barcode has been detected.

Abstract: The invention relates to an X-ray system for voluminous objects, known in the form of mobile devices that are displaced over the object, or in the form of fixed X-ray systems through which a voluminous object to be inspected (inspection product) is passed. Heavy goods vehicles or delivery vans (VAN) frequently constitute said objects to be inspected and pass through the silhouette system under their own propulsion. The X-rays are activated and deactivated by a preferably three-phase photoelectric barrier system. The aim of the invention is to activate or deactivate the X-rays of an X-ray source using a simple barcode that is attached to an object to be inspected, the object being driven past the X-ray source at a defined distance from the latter. The X-rays of X-ray sources of this type are generally activated by a diaphragm. It is thus advantageous if a barcode reader is located in a predetermined proximity to the diaphragm to define the activation or deactivation of the X-rays.