Debris monitoring

  • US 9,826,872 B2
  • Filed: 12/31/2015
  • Issued: 11/28/2017
  • Est. Priority Date: 12/30/2010
  • Status: Active Grant
First Claim
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1. A cleaning apparatus debris monitoring system comprising:

  • a cleaning bin defining an opening through which the debris is drawn by a cleaning apparatus, the opening being substantially rectangular;

    a vacuum motor to draw the debris into the cleaning bin;

    an emitter system arranged to transmit a signal across the opening of the cleaning bin;

    a first receiver arranged to collect a first received signal indicative of a condition of an accumulation of the debris, the first received signal being provided by a first optical signal;

    a second receiver separated from the first receiver across a largest dimension of the opening, the second receiver arranged to collect a second received signal indicative of the condition of the accumulation of the debris, the second received signal being provided by a second optical signal; and

    a controller configured todetect an anomalous condition of the accumulation of the debris based on the first received signal and the second received signal, the detected anomalous condition indicating an asymmetric accumulation of the debris, andprovide a control signal to the vacuum motor to control an operation of the cleaning apparatus based on the detected anomalous condition of the accumulation.

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