| 摘要 |
A plurality of longitudinally spaced conductors is embedded in a non-metallic endless conveyor belt with each conductor extending transversely the width of the belt. A stationary signal generator is disposed along one edge of the belt and capacitively coupled to induce a signal in each of the conductors as they pass the signal generator. A stationary detector is disposed along the edge of said belt on the side opposite the signal generator at the same longitudinal station as the signal generator. The detector is electrically capacitively coupled to detect the signal in the passing conductor and detect a belt rip due to a discontinuity in the conductor. The detector is operatively connected to deactivate the conveyor drive mechanism and to activate a light or other alarm. |
