Device and method for detecting characteristics of a material occupying a volume with capactive sensing of mirrored plates
First Claim
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1. A system for sensing characteristics of a volume, comprising:
- at least one mirror input configured to connect to at least a first mirror plate, the first mirror plate being physically isolated from a first monitor space for containing a material;
at least one sense input configured to connect to at least a first sense plate that is interposed between the at least first mirror plate and the first monitored space and that has one surface that faces the first monitored space; and
a capacitance sense section that generates a first sense value based on a capacitance at the at least one sense input, and a mirror value based on the capacitance at the at least one mirror input.
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Abstract
A system for sensing characteristics of a volume can include a mirror input configured to connect to a first mirror plate. The first mirror plate can be physically isolated from a first monitored space for containing a material. A sense input can be configured to connect to a first sense plate. The first sense plate can be positioned between the first mirror plate and the first monitored space, and can have a surface that faces the first monitored space. A capacitance sense section can generate a first sense value based on a capacitance at the sense input, and a mirror value based on a capacitance at the mirror input.
69 Citations
31 Claims
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1. A system for sensing characteristics of a volume, comprising:
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at least one mirror input configured to connect to at least a first mirror plate, the first mirror plate being physically isolated from a first monitor space for containing a material; at least one sense input configured to connect to at least a first sense plate that is interposed between the at least first mirror plate and the first monitored space and that has one surface that faces the first monitored space; and a capacitance sense section that generates a first sense value based on a capacitance at the at least one sense input, and a mirror value based on the capacitance at the at least one mirror input. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A system for detecting the characteristics of at least one material occupying at volume, comprising:
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at least one sense plate having a first sense side that faces a first volume and an opposing second sense side; at least one mirror plate that is isolated from the first volume having a first mirror side that faces the first sense side; and a controller section that generates a characteristic value based on a capacitance of the at least one sense plate and the at least one mirror plate measured independently of one another. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A method of sensing the characteristic of a material occupying a volume:
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measuring a mirror capacitance of a mirror plate positioned adjacent to, but outside of a monitored volume; measuring a sense capacitance of a sense plate positioned between the mirror plate and the monitored volume; and generating a characteristic value based on the mirror capacitance and sense capacitance. - View Dependent Claims (27, 28, 29, 30, 31)
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Specification