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Wheel skid detection during mechanized cart retrieval

  • US 9,322,658 B2
  • Filed: 08/07/2015
  • Issued: 04/26/2016
  • Est. Priority Date: 03/18/2005
  • Status: Active Grant
First Claim
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1. A method of reducing wheel damage to carts retrieved by a mechanized cart retrieval unit, the method comprising:

  • detecting a wheel skid event via a vibration sensor included in a wheel assembly of a cart being retrieved by the mechanized cart retrieval unit, wherein detecting the wheel skid event comprises, by a controller in the wheel assembly, determining whether a vibration signal generated by the vibration sensor corresponds to a skid profile of a wheel; and

    in response to detecting the wheel skid event, transmitting a message to the mechanized cart retrieval unit over a wireless communication link to cause the mechanized cart retrieval unit to take a corrective action.

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