PORTABLE METABOLIC ANALYZER SYSTEM
First Claim
1. A system for measuring and tracking metabolic rate comprising:
- an adaptive sampling mechanism for the introduction of exhaled breath into a flow path;
at least one orifice with an appropriate cross sectional area in the flow path;
a pressure sensor with an inlet located on the inlet side of the orifice;
a calibration curve that relates the output signal of the pressure sensor to the exhaled volume flow rate; and
a means to determine the resting energy expenditure.
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Accused Products
Abstract
A system for measuring and tracking metabolic rate, physical activity and calorie intake. The metabolic rate is measured with a design that features an adaptive sampling mechanism for accurate breath sample collection, optimized flow rate measurement for minimizing backpressure while maximizing accuracy, humidity regulation and water condensation reduction mechanism for reliable performance, as well as breath temperature measurement for volume and humidity corrections. The system further comprises an improved algorithm for determining physical activity such as related energy expenditure, and a mechanism for tracking changes in food intake over time.
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Citations
28 Claims
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1. A system for measuring and tracking metabolic rate comprising:
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an adaptive sampling mechanism for the introduction of exhaled breath into a flow path; at least one orifice with an appropriate cross sectional area in the flow path; a pressure sensor with an inlet located on the inlet side of the orifice; a calibration curve that relates the output signal of the pressure sensor to the exhaled volume flow rate; and a means to determine the resting energy expenditure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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12. The system of claim 12 wherein the fan is connected to the flow path via a one way valve.
Specification