Digital processor sensor loop detector and method

Details Digital processor sensor loop detector and method Digital processor sensor loop detector and method

2006-05-31

2010-06-22

Deuble, Mark A (Department: 3651)

Conveyors: power-driven

Conveyor section

Endless conveyor

C198S502100

Reexamination Certificate

active

07740130

ABSTRACT:
A digital processor for use in a conveyor belt rip detector, which provides excitation signals at a selected frequency to inverted and noninverted sensor loops on a conveyor belt and then, detects corresponding received signals from the sensor loops. The digital processor then performs FFTs on the corresponding received signals to provide respective received signal frequency spectrums. Next magnitude and phase values of the selected frequency in the respective received signal frequency spectrums are used to determine a qualitative state of the sensor loops. The selected frequency has a lowest detected ambient noise level, and the magnitude value is a normalized magnitude value.

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