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Metabolic rate measuring apparatus

A technology of quantity measurement and measuring device, which is applied in the field of metabolic quantity measurement device, and can solve the problem of no personal device

Inactive Publication Date: 2007-04-18
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] For the measurement of metabolic quantity, in the past, there were only large-scale devices, and there was no device that can be easily measured by individuals in daily life

Method used

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Embodiment Construction

[0020] According to the principle of the heat control mechanism of the human body, since the heat generated by metabolism (heat generation) is equal to the sum of the heat accumulated in the body (heat storage) and the heat emitted outside the body (heat dissipation), the following formula holds.

[0021] (Metabolism of the whole body [heat production]) = (heat storage of the whole body) + (heat dissipation of the whole body) (1)

[0022] If the body part r i The body temperature at place is T, the body part r i Tissue temperature at T T , body part r i The heat capacity at is α i , then the heat storage of the whole body is the sum of the heat storage of each part of the body, and can be expressed by the following formula.

[0023] Mathematical formula 1

[0024] Heat storage of the whole body = ∑ i alpha i {T(r i )-T T (r i )} (2)

[0025] Although Equation (2) deals with the volume of each body part, the arterial blood temperature T in the deep par...

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Abstract

A metabolic rate measuring apparatus, which calculates metabolic rate based on the physiological parameters measurements. The apparatus measures the physiological parameters, and uses equations of metabolic rate calculates in consideration with thermal equilibrium of human body to facilitate the measurement of metabolic rate.

Description

technical field [0001] The present invention relates to a metabolic quantity measurement device that measures a plurality of physiological parameters in a living body without collecting blood, and calculates a metabolic quantity from the plurality of physiological parameters. Background technique [0002] Metabolism can be measured in a variety of ways. Among them, indirect calorimetry is a method of measuring the amount of oxygen consumed to generate the amount of metabolism without directly measuring the amount of metabolism. In indirect calorimetry, there is an indirect calorimetry method of an open circuit system in which a mask is placed on a person's face to extract breathed air and measure consumption of oxygen and carbon dioxide. Although this method is used to measure changes in metabolic rate during exercise and rest, it is limited to short-term metabolic rate measurement because it is difficult to wear a mask for a long time. In order to measure the amount of me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/00A61B5/01A61B5/026G06F19/00A61B5/145G01N33/48A61B5/1455A61B5/22
CPCA61B5/01A61B5/14532
Inventor 内田刚三卷弘木口雅史
Owner HITACHI LTD
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