Human energy metabolism detection device and method

Abstract

The invention discloses a human energy metabolism detection device and a human energy metabolism detection method. The human energy metabolism detection device comprises a gas collecting and mixing part, a gas concentration analyzing part, a control unit and human-computer interaction equipment, wherein the gas collecting and mixing part comprises a breathing mask, a flow sensor, a pulse solenoid valve (1) and a micro mixing chamber, and the breathing mask, the flow sensor, the pulse solenoid valve (1) and the micro mixing chamber are connected in sequence through connecting pipes; the gas concentration analyzing part comprises a gas cylinder, a three-way solenoid valve, a pulse solenoid valve (2), an oxygen sensor, a carbon dioxide sensor, a throttle valve and a gas sucking pump (2), the gas cylinder, the three-way solenoid valve, the pulse solenoid valve (2), the oxygen sensor, the carbon dioxide sensor, the throttle valve and the gas sucking pump (2) are connected by connecting pipes in sequence, and the upper end opening and the right end opening of the three-way solenoid valve are respectively connected with the gas cylinder and the pulse solenoid valve (2). The human energy metabolism detection device and the human energy metabolism detection method have the advantages of high equal proportional sampling precision of human exhaled gas and discontinuity of a sampling process.

Description

Technical field [0001] The invention relates to the technical field of gas sample collection and energy metabolism analysis, in particular to a human energy metabolism detection device and method. Background technique [0002] The gas metabolism test is based on the principle of indirect calorimetry. It calculates the energy consumption of the human body according to the amount of oxygen consumption and carbon dioxide production within a certain period of time, and the composition of the three major nutrients (carbohydrates, fats and proteins) in energy consumption. The device can be used with load equipment such as treadmills and power cars to test the human body's oxygen uptake and carbon dioxide emissions under different exercise loads. The gas metabolism test provides a reference for the assessment of cardiopulmonary function, diagnosis and treatment of diseases, and scientific nutrition supply. [0003] The early gas metabolism test is relatively simple, generally using Dougl...

AI Technical Summary

Problems solved by technology

However, there are some defects in the device: the air pressure in the micro-mixing chamber fluctuates with the sampling speed, which leads to low accuracy of equal-proportional sampling of the exhaled gas flow rate; the gas flow will affect the accuracy of the sensor concentration analysis. To obtain the gas concentration in the micro-mixing chamber statically, it is necessary to Periodically shut down the gas collection, resulting in some gas leakage, which limits the frequency of concentration data acquisition

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