Device for detecting the rotation of roller cutters in a shield excavating machine

A device for detecting rotation of cutting wheels of a tunneling machine with a shield with at least one cutting wheel (2), showing a generator (12) power when the cutting wheel (2) for being rotated and a system signal generator (16) connected to the generator (12), which, with the system of signal generation (16), can generate signals characteristic emission of the rotation of the cutting wheel (2 ) corresponding, and has a receiving unit (6) for receiving and interpreting broadcast signals relating to the rotation of the cutting wheel (2) that corresponds, characterized in that the device shows an antenna system (17) connected system signal generator (16) and in that an antenna (20) of the antenna system (17) is located on at least an outer peripheral section of the cutting wheel (2) corresponding, and is available for transmission wireless broadcast signals.