Device and method for measuring energy consumption of human body

A technology of human body energy and measuring devices, which is applied in diagnostic recording/measurement, electric radiation detectors, medical science, etc., can solve the problems of the influence of human body energy consumption, inconvenient use, and inability to perceive the movement of human upper limbs, etc. Low power consumption, simple algorithm and low cost

Inactive Publication Date: 2011-01-12
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of pedometer only uses the sum of walking steps to calculate the energy signal, and the speed of human walking actually has a great influence on the energy consumption of the human body
In addition, this kind of device must be worn vertically on the human body during exercise, which is not only inconvenient to use, but also unable to sense the movement of the upper limbs of the human body, such as turning around, twisting the waist, etc., which can also consume human energy.

Method used

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  • Device and method for measuring energy consumption of human body
  • Device and method for measuring energy consumption of human body
  • Device and method for measuring energy consumption of human body

Examples

Experimental program
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Embodiment

[0038] As an illustrative example, Figure 5 It is the signal collected when a volunteer steps forward at the Fresnel lens 2 at a walking speed. Figure 5 Among them, the signal curve segment 17 is the signal when the human body is still, and the signal peak 18 and the signal valley 19 correspond to the signal when the human body walks 1 step and 2 steps respectively. Use the peak-seeking algorithm to obtain the number of actions N=20; Image 6 is true Figure 5 The signal spectrogram obtained by Fourier analysis of the time domain signal, from Image 6It can be seen that the signal frequency is 0.8Hz, and the obtained step frequency is F=60*0.8*2=96 steps / min. The exercise time is T=20 / 96=0.21min; the volunteer is a male, with a weight of 70kg and a height of 185cm; input these parameters into the calculation unit, according to the empirical formula:

[0039] Walking energy expenditure / kcal=0.53H+0.58W+0.37F+1.51T-145.03

[0040] =0.53×185+0.58×70+0.37×9...

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Abstract

The invention discloses a device and a method for measuring the energy consumption of a human body, which belong to the technical field of daily body-building assisting equipment. In the invention, a pyroelectric element and a Fresnel lens covered on the pyroelectric element form an infrared locator, infrared rays radiated by the human body in a detection range enter the Fresnel lens to strike the pyroelectric element, the pyroelectric element generates an electrical signal corresponding to the motion modality of the human body, the electrical signal is amplified by an amplification circuit to obtain an analog voltage signal which then enters a data acquisition circuit to be converted into a digital signal that enters a digital signal processing circuit to be analyzed and processed to realize count the actions and frequency of the motion of the human body, the data are input into a human body energy consumption calculation unit, and the value of the energy consumption for the motion of the human body is calculated by using an experimental formula. The device can be used as assisting equipment for daily body-building activities.

Description

technical field [0001] The invention relates to a daily body-building auxiliary device, in particular to a device and method for measuring energy consumed by human body movement by using pyroelectric elements. Background technique [0002] With the improvement of living standards, the importance of fitness activities has been recognized by more and more people, and the demand for fitness aids is also showing a rapid upward trend. From the point of view of the fitness effect, it is better to know the value of human energy consumption caused by specific exercise and use it for the guidance and control of fitness activities than pure fitness activities. Therefore, testing and estimating the energy consumption of human exercise is very important for guiding scientific fitness. [0003] The precise test of human energy consumption is very complicated, and often requires expensive test instruments and complicated test procedures to obtain more accurate results. It is generally us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/11G01J5/12
Inventor 董永贵杨靖王东生
Owner TSINGHUA UNIV
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