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Method and system of a multi-zone capacitive force-measuring based load sensing platform

  • US 7,897,884 B2
  • Filed: 05/10/2007
  • Issued: 03/01/2011
  • Est. Priority Date: 05/11/2006
  • Status: Active Grant
First Claim
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1. A load sensing platform, comprising:

  • a sensor surface to have a plurality of capacitive force-measuring devices arranged in an array;

    a base surface placed on top of the sensor surface to provide a contact surface of a load applied to the load sensing platform;

    a reference sensor surface to have a plurality of reference capacitive devices to compensate error in data of the plurality of capacitive force-measuring devices when the load is applied to the base surface; and

    a control module to process the data of the plurality of capacitive force-measuring devices and error-compensation data of the plurality of reference capacitive devices when the load is applied to the base surface, wherein the data of the plurality of capacitive force-measuring devices are based on changes in capacitance of the plurality of capacitive force-measuring devices due to the load, and wherein processing of the data comprises at least one of aggregating, recording, storing, tracking, reading, calculating, analyzing, communicating, monitoring values generated by the sensor surface and the reference sensor surface, calculating the duration of the load, a particular orientation of the load for a particular duration of time on the base surface of the load sensing platform, calculating changes in a specific gravity associated with the load and generating a timestamp on of the data to track the weight of the load and/or the position of the load.

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