System and method for calibrating a determination of partial pressure of one or more gaseous analytes
First Claim
1. A system adapted to calibrate a determination of information related to one or more gaseous analytes in a body of gas being delivered to an objective by a gas source, the system comprising:
- a partial pressure sensor that generates an output signal related to the partial pressure of the one or more gaseous analytes in the body of gas;
a total pressure monitor that determines the total pressure of the body of gas;
a partial pressure module that determines the partial pressure of the one or more gaseous analytes in the body of gas according to a partial pressure function, wherein the partial pressure function describes the partial pressure of the one or more gaseous analytes in the body of gas as a function of the output signal generated by the partial pressure sensor; and
a calibration module that calibrates the partial pressure module by determining the partial pressure function, wherein the calibration module determines the partial pressure function based on (i) a plurality of samples of the output signal generated by the partial pressure sensor at a plurality of points in time during a calibration time period, (ii) a plurality of determinations of the total pressure of the body of gas made at substantially the same points in time at which the plurality of samples of the output signal were generated, and (iii) a target concentration of the one or more analytes in the body of gas during the calibration time period, wherein the calibration time period comprises a time period during which the body of gas is being delivered to the objective while the gas source operates to keep the concentration of the one or more analytes in the body of gas substantially equal to the target concentration as the total pressure of the body of gas changes.
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Accused Products
Abstract
One aspect of the invention relates to a system adapted to calibrate a determination of information related to one or more gaseous analytes in a body of gas being delivered to an objective by a gas source. In one embodiment the system comprises a partial pressure sensor, a total pressure monitor, a partial pressure module, and a calibration module. The partial pressure sensor generates an output signal related to the partial pressure of the one or more gaseous analytes in the body of gas. The total pressure monitor determines the total pressure of the body of gas. The partial pressure module determines the partial pressure of the one or more gaseous analytes in the body of gas according to a partial pressure function, wherein the partial pressure function describes the partial pressure of the one or more gaseous analytes in the body of gas as a function of the output signal generated by the partial pressure sensor. The calibration module that calibrates the partial pressure module by determining the partial pressure function.
9 Citations
25 Claims
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1. A system adapted to calibrate a determination of information related to one or more gaseous analytes in a body of gas being delivered to an objective by a gas source, the system comprising:
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a partial pressure sensor that generates an output signal related to the partial pressure of the one or more gaseous analytes in the body of gas; a total pressure monitor that determines the total pressure of the body of gas; a partial pressure module that determines the partial pressure of the one or more gaseous analytes in the body of gas according to a partial pressure function, wherein the partial pressure function describes the partial pressure of the one or more gaseous analytes in the body of gas as a function of the output signal generated by the partial pressure sensor; and a calibration module that calibrates the partial pressure module by determining the partial pressure function, wherein the calibration module determines the partial pressure function based on (i) a plurality of samples of the output signal generated by the partial pressure sensor at a plurality of points in time during a calibration time period, (ii) a plurality of determinations of the total pressure of the body of gas made at substantially the same points in time at which the plurality of samples of the output signal were generated, and (iii) a target concentration of the one or more analytes in the body of gas during the calibration time period, wherein the calibration time period comprises a time period during which the body of gas is being delivered to the objective while the gas source operates to keep the concentration of the one or more analytes in the body of gas substantially equal to the target concentration as the total pressure of the body of gas changes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of calibrating a system that determines information related to one or more gaseous analytes in a body of gas being delivered to an objective by a gas source, the method comprising:
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generating an output signal that is related to a partial pressure of the one or more analytes in the body of gas; taking a plurality of samples of the output signal at a plurality of points in time during a calibration time period, wherein the calibration time period comprises a time period during which the body of gas is being delivered to the objective while the gas source operates to keep the concentration of the one or more analytes in the body of gas substantially equal to the target concentration as the total pressure of the body of gas changes; determining the total pressure of the body of gas at substantially the same points in time that the plurality of output signal samples are taken; and determining a partial pressure function that describes the partial pressure of the one or more analytes in the body of gas as a function of the output signal, the partial pressure function being determined based on (i) the plurality of samples, (ii) the determinations of the total pressure of the body of gas made at substantially the same points in time at which the plurality of samples of the output signal were taken, and (iii) the target concentration of the one or more analytes in the body of gas during the calibration time period. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A method of calibrating a system that determines information related to one or more gaseous analytes in a body of gas contained in a conduit, the method comprising:
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generating an output signal that is related to a partial pressure of the one or more analytes in the body of gas; substantially containing the body of gas within the conduit; changing the total pressure of the body of gas within the conduit; taking a plurality of samples of the output signal at a plurality of points in time during a calibration time period, wherein the calibration time period comprises the time period during which the total pressure of the body of gas within the conduit is being changed; determining the total pressure of the body of gas at substantially the same points in time that the plurality of output signal samples are taken at; and determining a partial pressure function that describes the partial pressure of the one or more analytes in the body of gas as a function of the output signal, the partial pressure function being determined based on (i) the plurality of samples, (ii) the determinations of the total pressure of the body of gas made at substantially the same points in time at which the plurality of samples of the output signal were taken, and (iii) the concentration of the one or more analytes in the body of gas during the calibration time period. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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Specification