SYSTEM AND METHOD FOR MONITORING HUMAN WATER LOSS THROUGH EXPIRATION AND PERSPIRATION
First Claim
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1. A system for monitoring water loss comprising:
- at least one humidity sensor;
an air flow sensor inside a test chamber, the test chamber having a mouth port and an ambient port;
at least one other sensor that provides a proxy value related to one of breathing rate of a subject and breath volume of the subject;
a memory; and
,a controller having communication with said at least one humidity sensor, the air flow sensor, said at least one other sensor, and memory;
wherein the controller is configured to;
determine a first humidity of an environment with said at least one humidity sensor,determine a first breath volume of one of an inhalation and an exhalation based on readings from the air flow sensor as the subject breathes through the mouth port,determine a first breathing rate based on readings from at least one of the air flow sensor and at least one other sensor,determine a first proxy value based on readings from said at least one other sensor,store in a profile in the memory, an association of the first proxy value with at least one of the first breath volume and the first breathing rate,determine a plurality of second proxy values based on readings from said at least one other sensor over a interval,determine an amount of water loss for the interval based on at least the first humidity, the plurality of second proxy values, and the profile,the controller further having communication with a display, wherein the amount of water loss is reported on the display.
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Abstract
A method and apparatus for determining and reporting water loss by a subject through expiration and perspiration. The reported water loss can be for a particular period of exercise or activity performance. The temperature and humidity of ambient air, e.g., as inhaled into the subject'"'"'s lungs, and other factors including the temperature and humidity of the air exhaled, breath volume, and respiration rate, each of which may be measured, though some can be estimated on the basis of heart rate, exertion level, or recognized activities. Perspiration rate can also be measured and included. Monitoring for pulmonary hemorrhage or hemoptysis can also be incorporated.
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Citations
20 Claims
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1. A system for monitoring water loss comprising:
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at least one humidity sensor; an air flow sensor inside a test chamber, the test chamber having a mouth port and an ambient port; at least one other sensor that provides a proxy value related to one of breathing rate of a subject and breath volume of the subject; a memory; and
,a controller having communication with said at least one humidity sensor, the air flow sensor, said at least one other sensor, and memory; wherein the controller is configured to; determine a first humidity of an environment with said at least one humidity sensor, determine a first breath volume of one of an inhalation and an exhalation based on readings from the air flow sensor as the subject breathes through the mouth port, determine a first breathing rate based on readings from at least one of the air flow sensor and at least one other sensor, determine a first proxy value based on readings from said at least one other sensor, store in a profile in the memory, an association of the first proxy value with at least one of the first breath volume and the first breathing rate, determine a plurality of second proxy values based on readings from said at least one other sensor over a interval, determine an amount of water loss for the interval based on at least the first humidity, the plurality of second proxy values, and the profile, the controller further having communication with a display, wherein the amount of water loss is reported on the display. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for monitoring water loss comprising the steps of:
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accepting, by a controller, a first humidity of an environment; reading, by the controller from a memory, a profile comprising an association of a first proxy value with at least one of a first breath volume and a first breathing rate; determining, by the controller, a plurality of second proxy values for a subject based on readings over an interval from at least one sensor, the at least one sensor comprising at least one of a heart rate monitor, a perspiration sensor, and a motion sensor; determining, by the controller, an amount of water loss by the subject for the interval based on at least the first humidity, the plurality of second proxy values, and the profile; and
,reporting, by the controller the amount of water loss. - View Dependent Claims (18, 19, 20)
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Specification