Counter using an inductive sensor for determining the quantity of articles in a receptacle
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United States of America Patent
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Mar 28, 2017
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N/A
app pub date -
Dec 3, 2015
filing date -
Dec 3, 2014
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Abstract
Systems and methods are provided for measuring articles contained within and/or dispensed from a receptacle. The present invention incorporates a counter device that measures the displacement of a conductive target relative to an LC circuit using an inductance-to-digital converter. In operation, a change in weight of articles in a receptacle will displace or deform a conductive target relative to the position of the LC circuit and, as such, it will create a measurable differential relating to inductance. Based on the measured differential, the number of articles (e.g., pills) within and/or taken from the receptacle is determined using a processor. In accordance with a further aspect, the counter is configured to compensate for a temperature-dependent variation in the measured electrical parameter algorithmically using the processor and/or through the particular configuration of the receptacle components.
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