Handheld sensing apparatus
First Claim
1. A computer code product for a handheld sensing apparatus comprising an array of sensors capable of identifying or quantifying an analyte in a gas, solution, or solid, said computer code product comprising:
- a code directed to training and calibrating said handheld sensing apparatus by exposing said handheld apparatus to a target analyte of known identity;
a code directed to identifying or quantifying an analyte of unknown identity in said gas, solution, or solid; and
a computer readable storage medium for holding said codes.
1 Assignment
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Accused Products
Abstract
A vapor sensing device that is sufficiently small and lightweight to be handheld, and also modular so as to allow the device to be conveniently adapted for use in sensing the presence and concentration of a wide variety of specified vapors. The device provides these benefits using a sensor module that incorporates a sample chamber and a plurality of sensors located on a chip releasably carried within or adjacent to the sample chamber. Optionally, the sensor module can be configured to be releasably plugged into a receptacle formed in the device. Vapors are directed to pass through the sample chamber, whereupon the sensors provide a distinct combination of electrical signals in response to each. The sensors of the sensor module can take the form of chemically sensitive resistors having resistances that vary according to the identity and concentration of an adjacent vapor. These chemically sensitive resistors can each be connected in series with a reference resistor, between a reference voltage and ground, such that an analog signal is established for each chemically sensitive resistor. The resulting analog signals are supplied to an analog-to-digital converter, to produce corresponding digital signals. These digital signals are appropriately analyzed for vapor identification.
109 Citations
35 Claims
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1. A computer code product for a handheld sensing apparatus comprising an array of sensors capable of identifying or quantifying an analyte in a gas, solution, or solid, said computer code product comprising:
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a code directed to training and calibrating said handheld sensing apparatus by exposing said handheld apparatus to a target analyte of known identity;
a code directed to identifying or quantifying an analyte of unknown identity in said gas, solution, or solid; and
a computer readable storage medium for holding said codes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 32, 33, 34, 35)
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13. A computer code product for a handheld sensing apparatus comprising an array of sensors capable of identifying or quantifying an analyte in a gas, solution, or solid, said computer code product comprising:
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code including instructions for storing a response vector to a target analyte;
code including instructions for comparing said response vector to a target analyte with a response vector to an unknown analyte in said gas, solution, or solid; and
a computer readable storage medium for holding said codes. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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Specification