CN101703403B - Device and method for measuring energy consumption of human body - Google Patents
Device and method for measuring energy consumption of human body Download PDFInfo
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- CN101703403B CN101703403B CN2009102377251A CN200910237725A CN101703403B CN 101703403 B CN101703403 B CN 101703403B CN 2009102377251 A CN2009102377251 A CN 2009102377251A CN 200910237725 A CN200910237725 A CN 200910237725A CN 101703403 B CN101703403 B CN 101703403B
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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
The present invention relates to a kind of daily body-building assistive device, especially a kind of device and method that utilizes the pyroelectricity element to realize the human motion consumed energy is measured.
Background technology
Along with growth in the living standard, the importance of body-building approved by increasing people, and the demand of the auxiliary implement of body-building class is also presented zooming trend.From body-building effect, the value of concrete energy consumption of human body that motion causes be if can know, and the guidance and the control of body-building used it for, better than simple body-building.Therefore, the test of human motion energy expenditure and estimation, extremely important for instructing body-building by scientific methods.
The accurate test of energy consumption of human body is very complicated, and often needs the testing process of expensive test instrunment, complexity, just can obtain result more accurately, general main being used in as professional very strong occasions such as training athletes.Shortage practical significance for the general population.So, in actual applications, mainly adopting some simple method of testing and instruments, perhaps simple computing formula is estimated.Estimation mode commonly used at present is the empirical equation that some statistics obtain, and as common road-work, swimming, badminton etc., the time span of persistent movement can be multiply by an empirical coefficient, obtains catabiotic estimated value.This mode is simple to operate, but precision is not high, and need know concrete forms of motion.Another kind of common test instrunment is the pedometer that human consumption energy computing function is arranged, by measuring the step number of human walking motion, the energy that estimation is consumed.Yet this pedometer is only used the total incompatible calculating energy signal of walking step number, and in fact the speed of human locomotion speed has a significant impact the human consumption energy value.In addition, this device must the time vertically be worn on human body in motion, not only uses not to be easily, and can't the perception human upper limb locomotion, as turns round, sways one's hips etc. and can consume the motion conditions of body energy equally.
At above-mentioned the deficiencies in the prior art, the present invention adopts the infrared survey mode, changes by measuring with the pairing infrared signal of human motion, and the perception body motion information realizes the catabiotic estimation of human motion.
Utilize pyroelectricity combination of elements covering Fresnel lens thereon, form Infrared Detectors, the infrared energy that the human body radiation in the investigative range can be gone out is converted to the signal of telecommunication.When human body is static in investigative range, the pick off no-output.When human body moved in investigative range, pick off output was corresponding with the human motion rule, the signal of telecommunication of dynamic change.Therefore, this pick off is also referred to as human motion sensor.
The cost of manufacture of this human motion sensor is cheap, is widely used at the aspects such as automatic illumination of burglar alarm, public place.
Fig. 1 has provided in the present prior art, the typical constituted mode of this human motion sniffer.The infrared ray that human body 1 in investigative range gives off behind Fresnel lens 2, incides the surface of pyroelectricity element 3.The signal of telecommunication that is produced obtains analog voltage signal 5 after amplifying circuit 4 amplifies.Analog voltage signal 5 enters comparator circuit 7.Comparator circuit 7 is compared the signal of telecommunication and the threshold voltage circuit 6 given threshold voltages of input, amplitude as the signal of telecommunication exceeds threshold voltage ranges, then comparator circuit 7 provides two-value signal 8, behind signal holding circuit 9, be converted to switching signal 10, drive follow-up controlled device 11 and produce as actions such as switch, warnings.
The maximum characteristics of this application mode are the employing of comparator circuit 7.Sniffer passing threshold voltage ratio provides the switching signal that movement human has or do not have in the investigative range, triggers warning circuit or other actuators work of back level.
Summary of the invention
Measure the human motion energy expenditure, prior art has a lot of deficiencies.The present invention utilizes pyroelectric infrared sensor with low cost, adopts the infrared survey mode, changes by measuring with the pairing infrared signal of human motion, and the perception body motion information realizes the catabiotic estimation of human motion.
Technical scheme of the present invention is as follows:
A kind of energy consumption of human body measuring device, it is characterized in that this device comprises Fresnel lens, pyroelectricity element, amplifying circuit, data acquisition circuit, digital signal processing unit, human parameters input block, human consumption energy calculation unit and shows record cell; Described Fresnel lens covers above the pyroelectricity element, the output port of pyroelectricity element is connected with the input port of amplifying circuit, the output port of amplifying circuit is connected with the input port of data acquisition circuit, the output port of data acquisition circuit is connected with the input port of digital signal processing unit, the output port of the output port of digital signal processing unit, human parameters input block is connected with the input port of human consumption energy calculation unit, and the output port of energy expenditure computing unit is connected with the demonstration record cell.
A kind of energy consumption of human body measuring method provided by the invention is characterized in that this method comprises the steps:
1) infrared ray that goes out of the human body radiation detection system through forming successively by Fresnel lens and pyroelectricity element, the output signal of telecommunication, the signal of telecommunication obtain analog voltage signal after amplifying through amplifying circuit;
2) analog voltage signal is converted to digital signal through data acquisition circuit;
3) digital signal carries out peak-seeking and frequency-domain analysis through digital signal processing circuit, realizes action counting and frequency counting;
4) will move counting and frequency counting, and the sex of human body, height and body weight parameter input human consumption energy calculation unit, the human consumption energy calculation unit estimates the energy values that human motion consumes according to following empirical equation;
Male: walking energy expenditure/kcal=0.53H+0.58W+0.37F+1.51T-145.03;
Women: walking energy expenditure/kcal=0.003H+0.45W+0.16F+0.39T-12.93;
Wherein: H represents height/cm; W represents body weight/kg; F represents step frequency/step number per minute; T express time/min.
5) energy values that human motion consumed is sent to the demonstration record cell and carries out data show and record.
The present invention compared with prior art, have the following advantages and outstanding effect: utilize the energy expenditure in apparatus of the present invention measurement human motion process, human body does not need to wear any device, as long as freely-movable in the investigative range of pick off, use more conveniently, and be fit to very much indoor impromptu motion.And apparatus of the present invention cost is extremely low, power consumption is minimum, and algorithm is also very simple.
Description of drawings
Fig. 1 is the typical constituted mode of existing human motion sniffer.
Fig. 2 is the fundamental diagram of apparatus of the present invention.
Type signal when Fig. 3 is human motion.
Fig. 4 is the peak-seeking algorithm flow chart.
Fig. 5 is the signal of marking time in the example.
Fig. 6 is the Fourier spectrum analysis chart of the signal of marking time in the example.
Among the figure: the 1-human body; The 2-Fresnel lens; 3-pyroelectricity element; The 4-amplifying circuit; The 5-analog voltage signal; 6-threshold voltage circuit; The 7-comparator circuit; The 8-two-value signal; The 9-signal holding circuit; The 10-switching signal; The 11-controlled device; The 12-data acquisition circuit; The 13-digital signal processing circuit; 14-human parameters input block; 15-human consumption energy calculates; 16-shows record cell; Signal when the 17-human body is static; The 18-signal peak; 19-signal paddy.
The specific embodiment
Below in conjunction with key diagram operation principle of the present invention, specific implementation process are elaborated.
Fig. 2 is the fundamental diagram of apparatus of the present invention, and this device comprises Fresnel lens, pyroelectricity element, amplifying circuit, data acquisition circuit, digital signal processing unit, human parameters input block, human consumption energy calculation unit and shows record cell; Described Fresnel lens covers above the pyroelectricity element, the output port of pyroelectricity element is connected with the input port of amplifying circuit, the output port of amplifying circuit is connected with the input port of data acquisition circuit, the output port of data acquisition circuit is connected with the input port of digital signal processing unit, the output port of the output port of digital signal processing unit, human parameters input block is connected with the input port of human consumption energy calculation unit, and the output port of energy expenditure computing unit is connected with the demonstration record cell.
The present invention utilizes pyroelectric sensor to survey the information of human motion, moves counting by the peak-seeking algorithm, carries out frequency counting by Fourier analysis, utilizes existing human motion energy expenditure empirical equation again, estimates the energy that human motion consumes.
The infrared ray that human body 1 gives off is after Fresnel lens 2, pyroelectricity element 3, amplifying circuit 4 amplify, and the voltage signal 5 of output is converted to digital signal behind data acquisition circuit 12.The typical motion signal that actual detection arrives as shown in Figure 3, the action peak information be main information.Fig. 4 is the flow chart of peak-seeking algorithm.This peak-seeking algorithm is the core algorithm of the inventive method, can realize the action in the human motion process is counted.Utilize digital signal processing unit 13 by peak-seeking and frequency analysis, move and count and frequency counting, obtain action frequency N and operating frequency F, import human consumption energy calculation unit 15 into, simultaneously sex, height and the body weight parameter of human body are imported human consumption energy calculation unit 15 by human parameters input block 14, the human consumption energy calculation unit estimates the energy values that human motion consumes according to following empirical equation:
Male: walking energy expenditure/kcal=0.53H+0.58W+0.37F+1.51T-145.03;
Women: walking energy expenditure/kcal=0.003H+0.45W+0.16F+0.39T-12.93;
Wherein: H represents height/cm; W represents body weight/kg; F represents step frequency/step number per minute; T express time/min.
At last the energy values that human motion consumed is sent to and shows that record cell carries out data show and record.
Embodiment
As an illustrative examples, Fig. 5 signal that to be a volunteer front collect when Fresnel lens 2 is marked time with walking speed.Among Fig. 5, signature tune line segment 17 is the signal of human body when static, the signal of the corresponding human locomotion of 19 difference of signal peak 18 and signal paddy during 1,2 steps.Utilize the peak-seeking algorithm, obtain action frequency N=20; Fig. 6 carries out the signal spectrum figure that Fourier analysis obtains to Fig. 5 time-domain signal, and signal frequency is 0.8Hz as can be seen from Figure 6, obtains the step frequency and is F=60*0.8*2=96 step/min.Movement time is T=20/96=0.21min; The volunteer is the male, body weight 70kg, height 185cm; These parameters are imported computing unit, rule of thumb formula:
Walking energy expenditure/kcal=0.53H+0.58W+0.37F+1.51T-145.03
＝0.53×185+0.58×70+0.37×96+1.51×0.21-145.03
＝29.46/kcal
Claims (2)
1. energy consumption of human body measuring device, it is characterized in that this device comprises Fresnel lens (2), pyroelectricity element (3), amplifying circuit (4), data acquisition circuit (12), digital signal processing unit (13), human parameters input block (14), human consumption energy calculation unit (15) and shows record cell (16); Described Fresnel lens covers above the pyroelectricity element, the output port of pyroelectricity element is connected with the input port of amplifying circuit, the output port of amplifying circuit is connected with the input port of data acquisition circuit, the output port of data acquisition circuit is connected with the input port of digital signal processing unit, the output port of the output port of digital signal processing unit, human parameters input block is connected with the input port of human consumption energy calculation unit, and the output port of energy expenditure computing unit is connected with the demonstration record cell.
2. the energy consumption of human body measuring method that employing is installed according to claim 1 is characterized in that this method comprises the steps:
1) infrared ray that gives off of human body (1) detection system through forming successively by Fresnel lens and pyroelectricity element, the output signal of telecommunication, the signal of telecommunication obtain analog voltage signal (5) after amplifying through amplifying circuit;
2) analog voltage signal (5) is converted to digital signal through data acquisition circuit;
3) digital signal carries out peak-seeking and frequency-domain analysis through digital signal processing unit, realizes action counting and frequency counting;
4) will move counting and frequency counting, and the sex of human body, height and body weight parameter input human consumption energy calculation unit, the human consumption energy calculation unit estimates the energy values that human motion consumes according to following empirical equation;
Male: walking energy expenditure/kcal=0.53H+0.58W+0.37F+1.51T-145.03;
Women: walking energy expenditure/kcal=0.003H+0.45W+0.16F+0.39T-12.93;
Wherein: H represents height/cm; W represents body weight/kg; F represents step frequency/step number per minute; T express time/min;
5) energy values that human motion consumed is sent to the demonstration record cell and carries out data show and record.
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2016061041A1 (en) * | 2014-10-14 | 2016-04-21 | East Carolina University | Methods, systems and computer program products for determining hemodynamic status parameters using signals derived from multispectral blood flow and perfusion imaging |
| CN105030246B (en) * | 2015-07-09 | 2018-08-24 | 深圳市声禾科技有限公司 | A kind of method, apparatus and pedometer for measuring human body and consuming energy during exercise |
| CN108158587B (en) * | 2016-12-05 | 2020-12-29 | 中国移动通信有限公司研究院 | Method and device for measuring indoor human body exercise amount |
| CN110598646B (en) * | 2019-09-16 | 2022-07-12 | 北京邮电大学 | Depth feature-based unconstrained repeated action counting method |
| CN111257976B (en) * | 2020-02-04 | 2021-12-07 | 暨南大学 | Fresnel lens group and pyroelectric infrared human body posture estimation system comprising same |
| CN114376518A (en) * | 2021-12-07 | 2022-04-22 | 同济大学 | Non-contact real-time evaluation system and method for energy consumption of moving human body |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1052783A (en) * | 1990-11-29 | 1991-07-10 | 赵实 | The human energy metabolism tester |
| US6025597A (en) * | 1995-10-17 | 2000-02-15 | Optiscan Biomedical Corporation | Non-invasive infrared absorption spectrometer for measuring glucose or other constituents in a human or other body |
| KR100741863B1 (en) | 2006-03-16 | 2007-07-24 | 코위버(주) | Thermal sensor device for reducing errors caused by noise |
| CN101251394A (en) * | 2008-04-08 | 2008-08-27 | 山东大学 | Energy testing sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1052783A (en) * | 1990-11-29 | 1991-07-10 | 赵实 | The human energy metabolism tester |
| US6025597A (en) * | 1995-10-17 | 2000-02-15 | Optiscan Biomedical Corporation | Non-invasive infrared absorption spectrometer for measuring glucose or other constituents in a human or other body |
| KR100741863B1 (en) | 2006-03-16 | 2007-07-24 | 코위버(주) | Thermal sensor device for reducing errors caused by noise |
| CN101251394A (en) * | 2008-04-08 | 2008-08-27 | 山东大学 | Energy testing sensor |
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