Debris monitoring

  • US 8,742,926 B2
  • Filed: 12/30/2011
  • Issued: 06/03/2014
  • Est. Priority Date: 12/30/2010
  • Status: Active Grant
First Claim
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1. A debris monitoring system comprising:

  • a receptacle defining an opening to receive debris into the receptacle, the opening having a top portion and a bottom portion, the top portion above the bottom portion as debris is received into the receptacle;

    a first and a second emitter, each arranged to emit a signal across at least a portion of the opening; and

    a first receiver proximate to the first emitter to receive reflections of the signal emitted by the first emitter, the first receiver disposed along a top portion of the opening and toward the opening to receive an unreflected portion of the signal emitted by the second emitter across the largest dimension of the opening.

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