Substance detection device
First Claim
1. A substance detection device, comprising:
- a substrate configured to carry a substance;
wherein the substrate has a length and a substance loss along the length of the substrate;
a test region coupled to the substrate and configured to bond to at least a portion of the substance;
a sensor coupled to the substrate at a fixed location along the length and having a sensing signal output;
an integration circuit coupled to the sensor and configured to integrate, over a time interval, a signal from the sensing signal output; and
a detection circuit coupled to the integration circuit and configured to output a substance detected signal if the integrated sensing signal output signal deviates from the substance loss corresponding to the fixed sensor location.
1 Assignment
0 Petitions
Accused Products
Abstract
One example discloses a substance detection device, including: a substrate configured to carry a substance; wherein the substrate has a length and a substance loss along the length of the substrate; a test region coupled to the substrate and configured to bond to at least a portion of the substance; a sensor coupled to the substrate at a fixed location along the length and having a sensing signal output; an integration circuit coupled to the sensor and configured to integrate, over a time interval, a signal from the sensing signal output; and a detection circuit coupled to the integration circuit and configured to output a substance detected signal if the integrated sensing signal output signal deviates from the substance loss corresponding to the fixed sensor location.
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Citations
16 Claims
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1. A substance detection device, comprising:
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a substrate configured to carry a substance; wherein the substrate has a length and a substance loss along the length of the substrate; a test region coupled to the substrate and configured to bond to at least a portion of the substance; a sensor coupled to the substrate at a fixed location along the length and having a sensing signal output; an integration circuit coupled to the sensor and configured to integrate, over a time interval, a signal from the sensing signal output; and a detection circuit coupled to the integration circuit and configured to output a substance detected signal if the integrated sensing signal output signal deviates from the substance loss corresponding to the fixed sensor location. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A pregnancy test device comprising:
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a substrate configured to carry a substance; wherein the substrate has a length and a substance loss along the length of the substrate; a test region coupled to the substrate and configured to bond to at least a portion of the substance; a sensor coupled to the substrate at a fixed location along the length and having a sensing signal output; an integration circuit coupled to the sensor and configured to integrate, over a time interval, a signal from the sensing signal output; and a detection circuit coupled to the integration circuit and configured to output a pregnancy detected signal if the integrated sensing signal output signal deviates from the substance loss corresponding to the fixed sensor location.
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Specification