Device for controlling and monitoring a conveyor belt, notably a tubular conveyor belt

A device for controlling and monitoring a tubular conveyor belt (1, 1′, 1″, 1′″) made of rubber or a plastic similar to rubber, said conveyor belt being provided with embedded reinforcements (3), whereby the conveyor belt can be closed by overlapping its longitudinal edges so as to form a tubular conveyor belt (1″, 1′″), the latter being supported on all sides by idler rollers, and whereby, furthermore, the device comprises at least the following components:

• at least one detectable element (5, 5′) integrated in the conveyor belt in the form of a plurality of elements, the latter being arranged in the longitudinal and/or transverse directions with a spacing from each other, said detectable element being arranged in at least one of two edge zones of the conveyor belt;
• as well as
• at least one scanning unit (6, 6′), by means of which the position of the belt is exactly determined by detecting the elements in a non-contacting manner;
• characterized in that
• the detectable element (5, 5′) is a combination system comprising an induction loop (8) and a transponder (9) and the detectable element is completely embedded in the conveyor belts, wherein the scanner, induction loop and transponder interact to monitor if the longitudinal edges of the tubular conveyor belt overlap in order to detect if the tubular conveyor belt has become twisted.