A metabolic rate calculation method and system based on heart rate and respiratory rate

Abstract

The present invention proposes a metabolic rate calculation method and system based on heart rate and respiratory frequency, which relates to the field of metabolic rate calculation. It includes obtaining the scenario mode and height and weight parameters input by the user; detecting the human heart rate and respiratory rate at the sampling site; comparing the heart rate and respiratory rate with the preset values ​​of the pre-stored corresponding scenario mode, and judging whether the heart rate and respiratory rate are within the preset value range of the corresponding scenario mode; determining the proportional adjustment factor based on the situation that the heart rate and respiratory rate are within the preset value range of the corresponding scenario mode; establishing a mapping relationship between oxygen uptake and respiratory frequency and heart rate based on the proportional adjustment factor; calculating the human body surface area, and calculating the metabolic rate based on the human body surface area and oxygen uptake. The present invention realizes the calculation of metabolic rate with the help of heart rate and respiratory rate sensors. The measurement method is simple and easy, with high accuracy, wide application scenarios and strong practicality.

Description

Technical Field

[0001] The present invention belongs to the technical field of metabolic rate calculation, and in particular relates to a metabolic rate calculation method and system based on heart rate and respiratory frequency. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] The calculation method of metabolic rate has always been a key technology that has attracted much attention. It is of great significance in the development of intelligent and comfortable air conditioning. A slight change in metabolic rate will have a greater impact on thermal sensation. The indoor air conditioning operating temperature is often set according to the recommended value, which meets the thermal comfort needs of the majority of residents. However, in actual scenarios, residents may be at different activity levels in their daily lives, causing changes in metabolic rate, which in turn causes a mismatch between thermal demand and thermal environment and waste of air conditioning energy. Therefore, there is a lack of a metabolic rate calculation method based on human physiological parameters on the market.

[0004] At present, the measurement and evaluation methods of metabolic rate in the current standards are divided into four levels: first-level screening method, second-level observation method, third-level analytical method and fourth-level measurement method. The higher the level, the higher the accuracy. The measurement method is divided into two types: direct calorimetry and indirect calorimetry. The principle of direct calorimetry is simple, but the delay time is long. Indirect calorimetry includes mask / face mask type, ventilation hood, energy metabolism chamber and double-labeled water method. Because the equipment of these methods is complex and expensive, the application scenarios are very limited. Summary of the invention

[0005] In order to overcome the deficiencies of the above-mentioned prior art, the present invention provides a method and system for calculating metabolic rate based on heart rate and respiratory rate, which combines physiological parameters and indirect calorimetry to calculate metabolic rate. The measurement is simple, the accuracy is high, and the application scenarios are wide.

[0006] To achieve the above objectives, one or more embodiments of the present invention provide the following technical solutions:

[0007] A first aspect of the present invention provides a method for calculating metabolic rate based on heart rate and respiratory rate.

[0008] A method for calculating metabolic rate based on heart rate and respiratory rate comprises the following steps:

[0009] Obtain the scenario mode, height and weight parameters input by the user;

[0010] Detect human heart rate and respiratory rate at the sampling site;

[0011] Compare the heart rate and the respiratory rate with the pre-stored preset values ​​of the corresponding scene mode, and determine whether the heart rate and the respiratory rate are within the preset value range of the corresponding scene mode;

[0012] Determine a proportional adjustment factor based on the heart rate and the respiratory rate being within a preset value range of the corresponding scenario mode;

[0013] Based on the proportional adjustment factor, a mapping relationship between oxygen uptake, respiratory rate and heart rate is established;

[0014] Calculate body surface area, and calculate metabolic rate based on body surface area and oxygen uptake.

[0015] Preferably, the human heart rate and respiratory rate at the sampling site are detected multiple times, and an average value is taken, and the average value is used as the human heart rate and respiratory rate obtained by sampling.

[0016] Preferably, the specific determination process of the proportional adjustment factor is:

[0017] If the heart rate and the respiratory rate are both within the value range of the corresponding scenario mode, the proportional adjustment factor a = 0.5;

[0018] If the heart rate is within the range, but the respiratory rate data is abnormal, a = 0;

[0019] If the heart rate is abnormal but the respiratory rate is within the range, a = 1;

[0020] If the heart rate and the respiratory rate are both out of the value range of the corresponding scenario mode, data sampling fails.

[0021] Preferably, the oxygen uptake calculation formula is:

[0022]

[0023] In the formula, is oxygen uptake; f is respiratory rate; V T V is the tidal volume, select the corresponding value according to the activity level; ic It is the anatomical dead space; is the oxygen utilization rate; p is the atmospheric pressure of the environment; p water is the partial pressure of saturated water vapor; t is the temperature of exhaled gas; HR is the heart rate; a is the proportional adjustment factor.

[0024] Preferably, the human body surface area calculation formula is:

[0025]

[0026] Where W b is body weight; H b For height.

[0027] Preferably, the metabolic rate calculation formula is:

[0028]

[0029] Where M is metabolic rate; RQ is respiratory entropy; A d is the human body surface area; For oxygen uptake.

[0030] Preferably, when detecting the human heart rate and respiratory rate at the sampling site, multiple samplings are performed at intervals of 15 seconds.

[0031] A second aspect of the present invention provides a metabolic rate calculation system based on heart rate and respiratory rate.

[0032] A metabolic rate calculation system based on heart rate and respiratory rate, comprising:

[0033] The user input information acquisition module is configured to: acquire the scenario mode and height and weight parameters independently input by the user;

[0034] The sampling module is configured to: detect the human heart rate and respiratory rate at the sampling site;

[0035] The judging module is configured to: compare the heart rate and the breathing rate with the pre-stored preset values ​​of the corresponding scene mode, and respectively judge whether the heart rate and the breathing rate are within the preset value range of the corresponding scene mode;

[0036] The proportional adjustment factor determination module is configured to: determine the proportional adjustment factor based on the situation that the heart rate and the respiratory rate are within the preset value range of the corresponding scenario mode;

[0037] The oxygen uptake determination module is configured to: establish a mapping relationship between oxygen uptake and respiratory rate and heart rate based on a proportional adjustment factor;

[0038] The metabolic rate calculation module is configured to calculate the human body surface area, and obtain the metabolic rate based on the human body surface area and oxygen uptake.

[0039] The third aspect of the present invention provides a computer-readable storage medium having a program stored thereon, which, when executed by a processor, implements the steps in the method for calculating metabolic rate based on heart rate and respiratory frequency as described in the first aspect of the present invention.

[0040] The fourth aspect of the present invention provides an electronic device, including a memory, a processor, and a program stored in the memory and executable on the processor, wherein when the processor executes the program, the steps in the method for calculating metabolic rate based on heart rate and respiratory rate as described in the first aspect of the present invention are implemented.

[0041] One or more of the above technical solutions have the following beneficial effects:

[0042] The present invention provides a metabolic rate calculation method and system based on heart rate and respiratory frequency. From the perspective of metabolic process analysis, combined with the respiratory system and blood circulation system involved in gas exchange, the mathematical model of metabolic rate and respiratory rate is established using the two key indicators of respiratory rate and heart rate. With the help of heart rate and respiratory rate sensors, the metabolic rate can be calculated. The measurement method is simple and easy, with high accuracy, wide application scenarios and strong practicality.

[0043] The method for calculating the human metabolic rate provided by the present invention has the advantages of accurate monitoring, simplicity and low cost, and can be generally applied. While meeting the dynamic heat demand of the human body, energy can be supplied on demand, and air-conditioning equipment can be operated efficiently, comfortably and personalized in all weather conditions, thereby promoting the intelligent development of air-conditioning control technology.

[0044] Advantages of additional aspects of the present invention will be given in part in the following description, and in part will become obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0046] Figure 1 This is a flow chart of the method of the first embodiment.

[0047] Figure 2 It is a system structure diagram of the second embodiment. DETAILED DESCRIPTION

[0048] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0049] It should be noted that the terms used herein are for describing specific embodiments only and are not intended to be limiting of exemplary embodiments according to the present invention.

[0050] In the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.

[0051] Embodiment 1

[0052] This embodiment discloses a method for calculating metabolic rate based on heart rate and respiratory rate.

[0053] like Figure 1 As shown, a method for calculating metabolic rate based on heart rate and respiratory rate comprises the following steps:

[0054] Obtain the scenario mode, height and weight parameters input by the user;

[0055] Detect human heart rate and respiratory rate at the sampling site;

[0056] Compare the heart rate and the respiratory rate with the pre-stored preset values ​​of the corresponding scene mode, and determine whether the heart rate and the respiratory rate are within the preset value range of the corresponding scene mode;

[0057] Determine a proportional adjustment factor based on the heart rate and the respiratory rate being within a preset value range of the corresponding scenario mode;

[0058] Based on the proportional adjustment factor, a mapping relationship between oxygen uptake, respiratory rate and heart rate is established;

[0059] Calculate body surface area, and calculate metabolic rate based on body surface area and oxygen uptake.

[0060] The technical solution provided by this embodiment to solve the technical problem is as follows:

[0061] The first step is to determine the scenario mode, height and weight input by the user;

[0062] The second step is to detect the human heart rate and respiratory rate at the sampling site:

[0063] The heart rate and respiratory rate of the human body were measured at four sampling sites at intervals of 15 seconds, and recorded as HR i , f i The average of the four measurements is used as the human heart rate HR and respiratory rate f;

[0064] The third step is to determine whether the heart rate and the respiratory rate are within the value range of the corresponding scenario mode;

[0065] Step 4: If both the heart rate and the respiratory rate are within the value range of the corresponding scenario mode, the proportional adjustment factor a=0.5; if the heart rate is within the value range, but the respiratory rate data is abnormal, a=0; otherwise, a=1; if both the heart rate and the respiratory rate are not within the value range of the corresponding scenario mode, the data sampling fails.

[0066] Step 5: Establish oxygen uptake V O2 Mapping relationship with breathing rate and heart rate

[0067] The oxygen uptake at this activity level can be calculated using formula (1):

[0068]

[0069] In the formula, is oxygen uptake, unit: ml / s; f is respiratory rate, unit: times / min; V TV is the tidal volume, unit: ml / time, select the corresponding value according to the activity level; ic is the anatomical dead space, unit: ml; is the oxygen utilization rate, unit: %; p is the ambient atmospheric pressure, unit: kPa; p water is the partial pressure of saturated water vapor, unit: kPa; t is the temperature of exhaled gas, unit: ℃; HR is the heart rate, unit: BPM.

[0070] Step 6: Calculate the human body surface area A d

[0071]

[0072] Where W b is body weight, unit: kg; H b is height, unit: m.

[0073] Step 7: Calculate metabolic rate

[0074] The metabolic rate at this activity level can be calculated using formula (3):

[0075]

[0076] Where M is metabolic rate, unit: W / m 2 ; RQ is respiratory entropy, dimensionless unit; A d is the human body surface area, unit: m 2 .

[0077] Embodiment 2

[0078] This embodiment discloses a metabolic rate calculation system based on heart rate and respiratory rate.

[0079] like Figure 2 As shown, a metabolic rate calculation system based on heart rate and respiratory rate includes:

[0080] The user input information acquisition module is configured to: acquire the scenario mode and height and weight parameters independently input by the user;

[0081] The sampling module is configured to: detect the human heart rate and respiratory rate at the sampling site;

[0082] The judging module is configured to: compare the heart rate and the breathing rate with the pre-stored preset values ​​of the corresponding scene mode, and respectively judge whether the heart rate and the breathing rate are within the preset value range of the corresponding scene mode;

[0083] The proportional adjustment factor determination module is configured to: determine the proportional adjustment factor based on the situation that the heart rate and the respiratory rate are within the preset value range of the corresponding scenario mode;

[0084] The oxygen uptake determination module is configured to: establish a mapping relationship between oxygen uptake and respiratory rate and heart rate based on a proportional adjustment factor;

[0085] The metabolic rate calculation module is configured to calculate the human body surface area, and obtain the metabolic rate based on the human body surface area and oxygen uptake.

[0086] Embodiment 3

[0087] The purpose of this embodiment is to provide a computer-readable storage medium.

[0088] A computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps in the method for calculating metabolic rate based on heart rate and respiratory frequency as described in Example 1 of the present disclosure.

[0089] Embodiment 4

[0090] The purpose of this embodiment is to provide an electronic device.

[0091] An electronic device includes a memory, a processor, and a program stored in the memory and executable on the processor. When the processor executes the program, the steps in the method for calculating metabolic rate based on heart rate and respiratory frequency as described in Example 1 of the present disclosure are implemented.

[0092] The steps involved in the apparatuses of the above embodiments 2, 3 and 4 correspond to the method embodiment 1, and the specific implementation methods can refer to the relevant description part of embodiment 1. The term "computer-readable storage medium" should be understood as a single medium or multiple media including one or more instruction sets; it should also be understood to include any medium that can store, encode or carry an instruction set for execution by a processor and enable the processor to execute any method in the present invention.

[0093] Those skilled in the art should understand that the modules or steps of the present invention described above can be implemented by a general-purpose computer device, or alternatively, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. The present invention is not limited to any specific combination of hardware and software.

[0094] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

Claims

1. A method for calculating metabolic rate based on heart rate and respiratory rate, characterized in that: The following steps are involved: Obtain the scenario mode, height and weight parameters input by the user; Detect human heart rate and respiratory rate at the sampling site; Compare the heart rate and the respiratory frequency with the pre-stored preset values ​​of the corresponding scene mode, and determine whether the heart rate and the respiratory frequency are within the preset value range of the corresponding scene mode; Determine a proportional adjustment factor based on the fact that the heart rate and the respiratory rate are within a preset value range of the corresponding scenario mode; Based on the proportional adjustment factor, a mapping relationship between oxygen uptake, respiratory rate and heart rate is established; Calculate body surface area, and calculate metabolic rate based on body surface area and oxygen uptake.

2. The method for calculating metabolic rate based on heart rate and respiratory rate according to claim 1, characterized in that: The human heart rate and respiratory rate at the sampling site are detected multiple times, and an average value is taken, and the average value is used as the human heart rate and respiratory rate obtained by sampling.

3. The method for calculating metabolic rate based on heart rate and respiratory rate according to claim 1, characterized in that: The specific determination process of the proportional adjustment factor is: If the heart rate and breathing rate are both within the value range of the corresponding scenario mode, the proportional adjustment factor a = 0.5; If the heart rate is within the range, but the respiratory rate data is abnormal, then a = 0; If the heart rate is abnormal but the breathing rate is within the range, then a = 1; If the heart rate and breathing rate are not within the value range of the corresponding scenario mode, data sampling fails.

4. The method for calculating metabolic rate based on heart rate and respiratory rate according to claim 1, characterized in that: The oxygen uptake calculation formula is: In the formula, is oxygen uptake; f is respiratory rate; V T V is the tidal volume, select the corresponding value according to the activity level; ic It is the anatomical dead space; is the oxygen utilization rate; p is the atmospheric pressure of the environment; p water is the partial pressure of saturated water vapor; t is the temperature of exhaled gas; HR is the heart rate; a is the proportional adjustment factor.

5. The method for calculating metabolic rate based on heart rate and respiratory rate according to claim 1, characterized in that: The formula for calculating human body surface area is: Where W b is body weight; H b For height.

6. The method for calculating metabolic rate based on heart rate and respiratory rate according to claim 1, characterized in that: The metabolic rate calculation formula is: Where M is metabolic rate; RQ is respiratory entropy; A d is the human body surface area; For oxygen uptake.

7. The method for calculating metabolic rate based on heart rate and respiratory rate according to claim 2, characterized in that: When detecting the human heart rate and respiratory rate at the sampling site, multiple samplings are performed at intervals of 15 seconds.

8. A metabolic rate calculation system based on heart rate and respiratory rate, characterized in that: include: The user input information acquisition module is configured to: acquire the scenario mode and height and weight parameters independently input by the user; The sampling module is configured to: detect the human heart rate and breathing rate at the sampling site; The judging module is configured to: compare the heart rate and the breathing frequency with the pre-stored preset values ​​of the corresponding scene mode, and respectively judge whether the heart rate and the breathing frequency are within the preset value range of the corresponding scene mode; The proportional adjustment factor determination module is configured to: determine the proportional adjustment factor based on the situation that the heart rate and the respiratory rate are within the preset value range of the corresponding scenario mode; The oxygen uptake determination module is configured to: establish a mapping relationship between oxygen uptake and respiratory rate and heart rate based on a proportional adjustment factor; The metabolic rate calculation module is configured to calculate the human body surface area, and obtain the metabolic rate based on the human body surface area and oxygen uptake.

9. A computer-readable storage medium having a program stored thereon, characterized in that: When the program is executed by a processor, the steps of the method for calculating metabolic rate based on heart rate and respiratory rate as described in any one of claims 1 to 7 are implemented.

10. An electronic device comprising a memory, a processor, and a program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the steps in the method for calculating metabolic rate based on heart rate and respiratory rate as described in any one of claims 1 to 7 are implemented.

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