Debris sensor for cleaning apparatus

  • US 8,598,829 B2
  • Filed: 06/14/2012
  • Issued: 12/03/2013
  • Est. Priority Date: 01/28/2004
  • Status: Active Grant
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First Claim
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1. An autonomous cleaning apparatus comprising:

  • a side brush;

    a main brush;

    a debris bin;

    a chassis carrying the side brush, the main brush, and the debris bin, the side brush operative to direct particulates from a cleaning surface toward the main brush, and the main brush operative to direct the particulates toward the debris bin;

    a piezoelectric sensor disposed between the main brush and the debris bin, wherein impact of the particulates moving from the side brush to the main brush toward the debris bin is detectable by the piezoelectric sensor;

    a drive system carried by the chassis and operative to move the chassis; and

    a control module coupled to the piezoelectric sensor and configured control the drive system based on the detected impact of the particulates moving from the side brush to the main brush toward the debris bin.

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