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Calibration device and method for breath measurement equipment

A technology for calibrating devices and measuring equipment, which is applied in the direction of measuring devices, testing/calibration of speed/acceleration/shock measuring equipment, and speed/acceleration/shock measurement to achieve the effect of increasing accuracy

Inactive Publication Date: 2019-07-26
张晨光
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Problems solved by technology

For sensors whose basic working condition is to measure steady-state airflow, the above methods can basically meet the calibration requirements; but for measuring unsteady-state airflow with drastic changes in flow rate, gas composition (humidity) and temperature, such as human respiration

Method used

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  • Calibration device and method for breath measurement equipment
  • Calibration device and method for breath measurement equipment

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Embodiment Construction

[0045] Such as figure 1 , figure 2 As shown in the measurement device, first connect the flow rate sensor L1 to be calibrated with the one-way valves Fa1 and Fa2, Fa1 can be directly connected to the ambient atmosphere or connected to a flexible airbag D1 filled with gas; Fa2 is connected to an empty flexible airbag; Then breathe through the mouth, the ambient atmosphere or the gas in the flexible air bag D1 enters the lungs of the human body through the one-way valve Fa1 through the flow rate sensor L1; the gas during exhalation enters the flexible air bag D2 through the sensor L1 and the one-way valve Fa2. After waiting for the breath to end, if figure 2 The exhalation bag D2 shown is connected with the one-way valve Fa3 and the graduated syringe Q1. By extracting the gas in D2 multiple times through Q1, the accurate volume of the gas in D2 can be finally obtained. The corresponding working conditions and gas treatment can be configured according to the actual situation...

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Abstract

The invention provides a calibration device and method for breath measurement equipment. According to the calibration device and method, the defects of single-point measurement calibration in the pastare overcome by means of integral measurement calibration. The calibration device and method are suitable for calibration and metering of a flowmeter used for measuring a drastic change of a flow velocity and are specially suitable for metering and calibration of a sensor in the breath measurement field.

Description

technical field [0001] The invention relates to a calibration device and a calibration method of an indirect calorimetry human body energy metabolism rate tester and a human body respiration measuring device. Background technique [0002] Breathing—a physiological phenomenon, higher organisms use their lungs to inhale air, and the oxygen in it is supplied to the metabolism of cells; organisms produce energy through the reaction of oxygen with carbohydrates, fats, and proteins in the body to maintain normal physiological activities of life, and at the same time through breathing The gas removes the carbon dioxide produced by the reaction. [0003] Measuring the volume, flow rate, and composition of inhaled and exhaled air is an important method to measure the health of the human body. Exercise cardiorespiratory assessment, nutritional metabolism assessment, exercise capacity assessment, etc. all need to measure the body's respiration. [0004] One of the functions of the ex...

Claims

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Application Information

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IPC IPC(8): G01P21/02
CPCG01P21/025
Inventor 张晨光
Owner 张晨光
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