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Methods and apparatuses for determining the volume of a substance in a flexible tank

  • US 9,618,377 B2
  • Filed: 09/26/2013
  • Issued: 04/11/2017
  • Est. Priority Date: 09/26/2013
  • Status: Active Grant
First Claim
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1. A load sensing apparatus for determining a volume of a substance in a flexible storage container, the load sensing apparatus comprising:

  • a first plurality of load-sensitive sensors arranged in at least a region of a first footprint of the flexible storage container,wherein the region is external to a second footprint of the flexible storage container, the first footprint corresponds to an empty state of the flexible storage container, the second footprint corresponds to a full state of the flexible storage container, and the flexible storage container retracts from the first footprint to the second footprint that is smaller than the first footprint when the flexible storage container is filled; and

    a second plurality of load-sensitive sensors arranged within the second footprint,wherein a first spacing between an adjacent pair of load-sensitive sensors in the first plurality of load-sensitive sensors is less than a second spacing between an adjacent pair of load-sensitive sensors in the second plurality of load-sensitive sensors, andwherein sensor data from the first plurality of load-sensitive sensors and the second plurality of load-sensitive sensors are used to determine a volume of a substance in the flexible storage container.

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