CN110425173B - Heart rate based dynamic comfortable air regulation and control method and device for fan in sleep state - Google Patents
Heart rate based dynamic comfortable air regulation and control method and device for fan in sleep state Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
Abstract
The invention discloses a method and a device for dynamically regulating and controlling comfortable wind of a fan in a sleep state based on heart rate. The method mainly comprises the following steps: 1) the environment parameter acquisition module acquires the temperature and the humidity of the surrounding environment and the average radiation temperature of the fan; 2) the metabolic rate calculation module processes the heart rate signal to obtain a metabolic rate signal of the user; 3) calculating a standard effective temperature SET signal; 4) the control module is based on a preset wind speed fluctuation period T and a reference wind speed V0Generating a sine fluctuation function signal and feeding the sine fluctuation function signal back to the wind speed adjusting module; 5) the wind speed adjusting module adjusts the wind speed of the fan based on a sine fluctuation function, a maximum wind speed adjusting signal or a minimum wind speed adjusting signal; the invention avoids the influence on the sleep quality caused by cold or hot waking of the user under constant air flow.
Description
Technical Field
The invention relates to the field of fan regulation, in particular to a method and a device for dynamically regulating and controlling comfortable wind of a fan in a sleep state based on heart rate.
Background
In the Yangtze river basin area of China, summer is hot and long, and an air conditioner is widely used as a main device for improving indoor environment. However, long-time use of the air conditioner not only causes the increasing energy consumption of the building air conditioner in China and brings great pressure to the energy consumption requirement in China, but also shows that the heat adaptability of the human body is weakened in the air conditioning environment for long-term life, so that the body temperature regulation function of the human body is declined, the disease resistance of the human body is reduced, and the sick building syndrome is generated.
The sleep occupies one third of the life of a person, and the quality of the sleep directly influences the learning and working efficiency of the next day. The indoor environment is an important factor influencing the sleep quality of a human body, and in the cold and hot environments, the phenomena of increased awakening time and reduced deep sleep time of the human body occur, so that the sleep quality is reduced. The comfortable hot environment can avoid the waking times caused by cold or hot at night, and improve the sleep quality.
A number of field studies have shown that in a range of thermal environments, it is more desirable to improve the thermal environment and comfort by blowing air. The fan is popular among people due to the advantages of low price, flexible use, energy conservation, power conservation and the like, can effectively improve the thermal comfort of people in the natural environment, improve the upper limit of the acceptable temperature of the people, effectively reduce the sick building syndrome caused by long-term air-conditioning environment, and greatly save energy consumption. With the continuous deepening of the technical development, the user requirements and the healthy energy-saving concept, the improvement and the promotion of the functions of the fan become key problems influencing the popularization and the use of the fan.
The use of fans during sleep mainly has several problems: firstly, when people use the fan in a sleep stage, the fan is usually started at a proper gear before sleeping, but as the sleep deepens, the heat production of a human body is reduced, the requirement on the wind speed is different from that in a sleeping state, and the wind speed is kept constant; secondly, the temperature in the room is reduced due to the reduction of the outdoor temperature at night, but the indoor temperature rises back along with the rise of the outdoor temperature after the sun rises in the morning, so that the indoor temperature changes in a V shape in the sleep stage, but if the wind speed is kept constant, the requirement of thermal comfort of a human body cannot be met; third, many fans on the market have a sleep wind mode, but the existing sleep wind mode is a deformation of a natural wind mode, and the wind speed of the fan cannot be changed according to the physiological parameters of a human body and the indoor temperature change during sleep. Some techniques require the user of the fan to input parameters such as sleeping time, bed heat resistance and the like before sleeping, and automatically calculate the change of the metabolic rate to adjust the fan. However, due to individual differences, the preset sleep duration and the calculated metabolic rate change cannot accurately reflect the requirements of the user in the sleep period. The problem of too high or too low wind speed can be avoided, and the sleep is influenced.
Disclosure of Invention
The present invention is directed to solving the problems of the prior art.
The technical scheme adopted for achieving the purpose of the invention is that the dynamic comfortable air regulating and controlling device of the fan in the sleep state based on the heart rate mainly comprises the fan, an environmental parameter acquisition module, a heart rate acquisition module, a metabolic rate calculation module, a processing module, a control module, an air speed regulating module and a single chip microcomputer.
When the fan is started, the fan is in a sleep wind mode.
And every K periods, the environmental parameter acquisition module acquires the temperature, the humidity and the average radiation temperature of the surrounding environment and sends the temperature, the humidity and the average radiation temperature to the processing module.
And every K periods, the heart rate acquisition module monitors the heart rate signal HR of the user and sends the heart rate signal HR to the metabolic rate calculation module.
The heart rate acquisition module is an intelligent bracelet.
The metabolic rate calculation module processes the heart rate signal to obtain a metabolic rate signal of the user and sends the metabolic rate signal to the processing module.
HR > 75, metabolic rate signal f (met) ═ 1.0met, error range [ -0.1met.0.1met ].
HR is in the interval [65,75), metabolic rate signal f (met) is 0.9met, error range is [ -0.1met.0.1met ].
HR is in the interval [55,65), metabolic rate signal f (met) is 0.8met, error range is [ -0.1met.0.1met ].
HR <55, metabolic rate signal f (met) 0.7met, error range [ -0.1met.0.1met ].
The processing module presets the heat resistance value of the bed mattress.
The processing module stores a standard effective temperature SET calculation model and a fan wind speed and temperature coupling model.
And the standard effective temperature SET calculation model processes the temperature, the humidity, the average radiation temperature, the metabolic rate signal and the preset heat resistance value of the mattress of the surrounding environment to obtain a standard effective temperature SET signal.
The processing module judges whether the standard effective temperature SET signal is located in an interval [ k ]1，k2]And if so, inputting a standard effective temperature SET signal into the fan wind speed and temperature coupling model. If the standard effective temperature SET signal<k1And the processing module sends a minimum wind speed signal to the control module. If the standard effective temperature SET signal>k2And the processing module sends a maximum wind speed signal to the control module.
The fan wind speed and temperature coupling model processes the standard effective temperature SET signal to obtain a reference wind speed V when the human body thermal sensation TSV is 00The minimum wind speed Vmin when the human body thermal sensation TSV is equal to 0.5 and the maximum wind speed Vmax when the human body thermal sensation TSV is equal to-0.5.
The control module presets a wind speed fluctuation period T.
The control module receives a reference wind speed V0And when the wind speed upper limit Vmax and the wind speed lower limit Vmin are reached, a sine fluctuation function is generated and fed back to the wind speed adjusting module.
And when the control module receives the minimum wind speed signal, a minimum wind speed regulating and controlling signal is generated and fed back to the wind speed regulating module.
And when the control module receives the maximum wind speed signal, a maximum wind speed regulating and controlling signal is generated and fed back to the wind speed regulating module.
The wind speed adjusting module adjusts the wind speed of the fan based on the sine fluctuation function, the maximum wind speed adjusting signal or the minimum wind speed adjusting signal.
The environment parameter acquisition module, the metabolic rate calculation module, the processing module, the control module and the wind speed regulation module are integrated in the single chip microcomputer.
The method for using the dynamic comfortable air regulating and controlling device of the fan in the sleep state based on the heart rate mainly comprises the following steps:
1) and starting the fan and adjusting the fan to a sleep mode.
2) And every K periods, the environmental parameter acquisition module acquires the temperature and humidity of the surrounding environment and the average radiation temperature of the fan and sends the temperature and humidity and the average radiation temperature to the processing module.
3) Every K periods, the heart rate acquisition module monitors the heart rate signals of the user and sends the heart rate signals to the metabolic rate calculation module. The metabolic rate calculation module processes the heart rate signal to obtain a metabolic rate signal of the user and sends the metabolic rate signal to the processing module.
4) The processing module stores a standard effective temperature SET calculation model and a fan wind speed and temperature coupling model. And the standard effective temperature SET calculation model processes the temperature and the humidity of the surrounding environment, the average radiation temperature of a fan, a metabolic rate signal and a preset heat resistance value of the mattress to obtain a standard effective temperature SET signal.
5) If the standard effective temperature SET signal is in the interval [ k ]1，k2]And inputting a standard effective temperature SET signal into the fan wind speed and temperature coupling model by the processing module, and turning to the step 6.
If the standard effective temperature SET signal<k1Then the processing module sends a minimum wind speed signal to the control module and goes to step 7. If the standard effective temperature SET signal>k2And if so, the processing module sends a maximum wind speed signal to the control module and the step 8 is carried out.
6) If the fan wind speed and temperature coupling model receives the standard effective temperature SET signal, the fan wind speed and temperature coupling model processes the standard effective temperature SET signal to obtain the reference wind speed V when the human body thermal sensation TSV is equal to 00And the minimum wind speed Vmin when the human body thermal sensation TSV is equal to 0.5 and the maximum wind speed Vmax when the human body thermal sensation TSV is equal to-0.5 are fed back to the control module.
The coupling model of the fan wind speed and the temperature under different thermal sensing TSV votes is as follows:
when TSV is-0.5, the maximum wind speed Vmax＝a×SET+b1。 (2)
When TSV is 0, the reference wind speed V0＝a×SET+b0。 (3)
When TSV is 0.5, minimum wind speed Vmin＝a×SET+b2。 (4)
Wherein V is the wind speed. a. b0、b1、b2Are empirical values.
The control module is based on a preset wind speed fluctuation period T and a reference wind speed V0And the wind speed upper limit Vmax and the wind speed lower limit Vmin generate a sine fluctuation function signal and feed the sine fluctuation function signal back to the wind speed adjusting module.
The sinusoidal ripple function is as follows:
where T denotes the adjustment time and T denotes the period of the sinusoidal fluctuation.
7) And if the control module receives the minimum wind speed signal, generating a minimum wind speed regulating and controlling signal and sending the minimum wind speed regulating and controlling signal to the wind speed regulating module.
8) And if the control module receives the maximum wind speed signal, generating a maximum wind speed regulating and controlling signal and sending the maximum wind speed regulating and controlling signal to the wind speed regulating module.
9) And if the wind speed adjusting module receives the sine fluctuation function signal, the wind speed of the fan is adjusted to be in sine fluctuation change within the range of the wind speed upper limit Vmax and the wind speed lower limit Vmin.
And if the wind speed adjusting module receives the minimum wind speed adjusting and controlling signal, adjusting the wind speed of the fan to maintain the minimum wind speed Vmin unchanged.
And if the wind speed adjusting module receives the maximum wind speed adjusting signal, adjusting the wind speed of the fan to maintain the maximum wind speed Vmax unchanged.
The technical effect of the present invention is undoubted. The intelligent control method for automatically adjusting the fan speed can be realized by monitoring the change of indoor thermal environment parameters and the change of human body metabolic rate (heat production amount) during sleeping. The technology is used for monitoring the change of the heart rate of the human body in the sleep stage in real time, correlating the change of the heart rate with the change of the metabolic rate, combining the change of room environment parameters, automatically feeding back and calculating the change range of the wind speed within set interval time based on the human body thermal comfort theory, and outputting dynamic fluctuation airflow. On one hand, theoretical support is provided for the existing fan sleep wind regulation and control technology; on the other hand, the fan adjusts the wind speed according to the real-time physiological parameter signal of the human body and the room temperature change, so that the problem that the sleep quality is influenced because the person wakes up due to supercooling or overheating under constant air flow all night is avoided.
Drawings
FIG. 1 is a flow chart of dynamic regulation of fan speed;
FIG. 2 is a schematic diagram of a standard effective temperature and a suitable wind speed variation interval;
FIG. 3 is a schematic view of sinusoidal periodic variation of wind speed;
fig. 4 is a schematic view of the change of wind speed all night.
Fig. 5 is a graphical representation of the change in heart rate and metabolic rate throughout the night.
Detailed Description
The present invention is further illustrated by the following examples, but it should not be construed that the scope of the above-described subject matter is limited to the following examples. Various substitutions and alterations can be made without departing from the technical idea of the invention and the scope of the invention is covered by the present invention according to the common technical knowledge and the conventional means in the field.
Example 1:
referring to fig. 1 to 2, the dynamic comfortable wind control device of the fan in the sleep state based on the heart rate mainly comprises the fan, an environmental parameter acquisition module, a heart rate acquisition module, a metabolic rate calculation module, a processing module, a control module, a wind speed regulation module and a single chip microcomputer.
When the fan is started, the fan is in a sleep wind mode.
And every K periods, the environmental parameter acquisition module acquires the temperature and humidity of the surrounding environment and the average radiation temperature of the fan and sends the temperature and humidity and the average radiation temperature to the processing module.
And every K periods, the heart rate acquisition module monitors the heart rate signal HR of the user and sends the heart rate signal HR to the metabolic rate calculation module.
The heart rate acquisition module is an intelligent bracelet.
The metabolic rate calculation module processes the heart rate signal to obtain a metabolic rate signal of the user and sends the metabolic rate signal to the processing module.
The metabolic rate signal and the heart rate signal correspond as follows:
HR > 75, metabolic rate signal f (met) of about 1.0met, error range [ -0.1met.0.1met ].
HR is in the interval [65,75), the metabolic rate signal f (met) is about 0.9met, and the error range is [ -0.1met.0.1met ].
HR is in the interval [55,65 ], the metabolic rate signal f (met) is about 0.8met, and the error range is [ -0.1met.0.1met ].
HR <55, metabolic rate signal f (met) of about 0.7met with an error range of [ -0.1met.0.1met ].
The processing module presets the heat resistance value of the bed mattress.
The processing module stores a standard effective temperature SET calculation model and a fan wind speed and temperature coupling model.
And the standard effective temperature SET calculation model processes the temperature and the humidity of the surrounding environment, the average radiation temperature of a fan, a metabolic rate signal and a preset heat resistance value of the mattress to obtain a standard effective temperature SET signal.
The processing module judges whether the standard effective temperature SET signal is located in an interval [ k ]1，k2]And if so, inputting a standard effective temperature SET signal into the fan wind speed and temperature coupling model. If the standard effective temperature SET signal<k1And the processing module sends a minimum wind speed signal to the control module. If the standard effective temperature SET signal>k2And the processing module sends a maximum wind speed signal to the control module.
The fan wind speed and temperature coupling model is a mathematical calculation model between the wind speed V and the standard effective temperature SET under different Thermal Sensations (TSV) of a human body obtained through experiments. Calculating to obtain human body thermal sensationTSV is 0, i.e., the reference wind speed V when the human body feels no cold or no heat0And the minimum wind speed Vmin when the human body thermal sensation TSV is equal to 0.5, namely the human body feels slightly warm and the human body thermal sensation TSV is equal to-0.5, namely the maximum wind speed Vmax when the human body feels slightly cold.
The coupling model of the fan wind speed and the temperature under different thermal sensing TSV votes is as follows:
when TSV is-0.5, the maximum wind speed Vmax＝a×SET+b1； (2)
When TSV is 0, the reference wind speed V0＝a×SET+b0； (3)
When TSV is 0.5, minimum wind speed Vmin＝a×SET+b2； (4)
In the formula, V is wind speed; a. b0、b1、b2Is an empirical value; empirical values a, b0、b1、b2The values differ at different metabolic rates. According to the experiment, the values of the relevant empirical values are shown in the following table:
tables 1 a, b0、b1、b2Value taking
| Metabolic rate | a | b0 | b1 | b2 |
| 1.0met | 0.22 | -6.3 | -6 | -6.6 |
| 0.9met | 0.21 | -6 | -5.7 | -6.3 |
| 0.8met | 0.32 | -8.9 | -8.5 | -9.1 |
| 0.7met | 0.31 | -8.6 | -8.4 | -8.8 |
The control module presets a wind speed fluctuation period T.
The control module receives a reference wind speed V0And when the wind speed upper limit Vmax and the wind speed lower limit Vmin are reached, a sine fluctuation function is generated and fed back to the wind speed adjusting module.
And when the control module receives the minimum wind speed signal, a minimum wind speed regulating and controlling signal is generated and fed back to the wind speed regulating module.
And when the control module receives the maximum wind speed signal, a maximum wind speed regulating and controlling signal is generated and fed back to the wind speed regulating module.
The wind speed adjusting module adjusts the wind speed of the fan based on the sine fluctuation function, the maximum wind speed adjusting signal or the minimum wind speed adjusting signal.
The environment parameter acquisition module, the metabolic rate calculation module, the processing module, the control module and the wind speed regulation module are integrated in the single chip microcomputer.
Example 2:
referring to fig. 3 to 5, a method for using a dynamic comfortable wind control device of a fan in a sleep state based on a heart rate mainly includes the following steps:
1) and starting the fan and adjusting the fan to a sleep mode.
2) And every K periods, the environmental parameter acquisition module acquires the temperature and humidity of the surrounding environment and the average radiation temperature of the fan and sends the temperature and humidity and the average radiation temperature to the processing module. K is 20 min.
3) Every K periods, the heart rate acquisition module monitors the heart rate signals of the user and sends the heart rate signals to the metabolic rate calculation module. The metabolic rate calculation module processes the heart rate signal to obtain a metabolic rate signal of the user and sends the metabolic rate signal to the processing module.
4) The processing module stores a standard effective temperature SET calculation model and a fan wind speed and temperature coupling model. And the standard effective temperature SET calculation model processes the temperature and the humidity of the surrounding environment, the average radiation temperature of a fan, a metabolic rate signal and a preset heat resistance value of the mattress to obtain a standard effective temperature SET signal. In this embodiment, a SET calculation program compiled by Excel software is used in a building environment center at berkeley division, california university, and a measured thermal environment parameter is input into a standard effective temperature SET calculation model, and a value of the standard effective temperature SET is obtained through calculation.
The standard effective temperature SET is defined as: a person wearing the standard clothing (with the thermal resistance of 0.6clo) is in an environment with the relative humidity of 50 percent, the air is approximately static, and the air temperature is the same as the average radiation temperature, if the average skin temperature and the skin humidity at the moment are the same as those under a certain actual environment and actual clothing thermal resistance condition, the heat dissipation capacity of the human body in the standard environment and the actual environment is the same, and the air temperature of the standard environment is the standard effective temperature SET of the actual environment.
5) If the standard effective temperature SET signal is in the interval [ k ]1，k2]And inputting a standard effective temperature SET signal into the fan wind speed and temperature coupling model by the processing module, and turning to the step 6. k is a radical of1＝27.9℃,k2＝33℃。
If the standard effective temperature SET signal<k1Then the processing module sends a minimum wind speed signal to the control module and goes to step 7. If the standard effective temperature SET signal>k2And if so, the processing module sends a maximum wind speed signal to the control module and the step 8 is carried out.
6) If the fan wind speed and temperature coupling model receives the standard effective temperature SET signal, the fan wind speed and temperature coupling model processes the standard effective temperature SET signal to obtain the reference wind speed V when the human body thermal sensation TSV is equal to 00And the minimum wind speed Vmin when the human body thermal sensation TSV is equal to 0.5 and the maximum wind speed Vmax when the human body thermal sensation TSV is equal to-0.5 are fed back to the control module. Vmin is 0m/s, and Vmax is 1.5 m/s.
The coupling model of the fan wind speed and the temperature under different thermal sensing TSV votes is as follows:
when TSV is-0.5, the maximum wind speed Vmax＝a×SET+b1。 (2)
When TSV is 0, the reference wind speed V0＝a×SET+b0。 (3)
When TSV is 0.5, minimum wind speed Vmin＝a×SET+b2。 (4)
Wherein V is the wind speed. a. b0、b1、b2Are empirical values. Empirical values a, b0、b1、b2Determined by the metabolic rate met.
The control module is based on a preset wind speed fluctuation period T and a reference wind speed V0And the wind speed upper limit Vmax and the wind speed lower limit Vmin generate a sine fluctuation function signal and feed the sine fluctuation function signal back to the wind speed adjusting module. Wherein the amplitude of the wind speed fluctuation is (Vmax-Vmin)/2, and the offset of the sine wave to the positive half shaft of the wind speed is V0。
The sinusoidal ripple function is as follows:
where T denotes the adjustment time and T denotes the period of the sinusoidal fluctuation.
7) And if the control module receives the minimum wind speed signal, generating a minimum wind speed regulating and controlling signal and sending the minimum wind speed regulating and controlling signal to the wind speed regulating module.
8) And if the control module receives the maximum wind speed signal, generating a maximum wind speed regulating and controlling signal and sending the maximum wind speed regulating and controlling signal to the wind speed regulating module.
9) And if the wind speed adjusting module receives the sine fluctuation function signal, the wind speed of the fan is adjusted to be in sine fluctuation change within the range of the wind speed upper limit Vmax and the wind speed lower limit Vmin.
For the normal regulation and control of the rotating speed of the fan, a Pulse Width Modulation (PWM) control technology is adopted, the on-off of a switching device of an inverter circuit is controlled, so that a series of pulses with equal amplitude are obtained at the output end, and the pulses are used for replacing sine waves or required waveforms, so that the sine change control of the rotating speed of the fan is realized, and the sine fluctuation wind speed is output.
And if the wind speed adjusting module receives the minimum wind speed adjusting and controlling signal, adjusting the wind speed of the fan to maintain the minimum wind speed Vmin unchanged.
And if the wind speed adjusting module receives the maximum wind speed adjusting signal, adjusting the wind speed of the fan to maintain the maximum wind speed Vmax unchanged.
The regulation and control strategy regulates and controls the wind speed of the fan by monitoring the human body metabolic rate, and can dynamically regulate and control the set temperature of the air conditioner in the same way.
Example 3:
an experiment using a dynamic comfortable air regulating device of a fan in a sleep state based on a heart rate specifically refers to example 2. The results of the experiment are shown in table 2:
TABLE 2 Heart Rate variation and wind speed variation calculation table for examinees in whole night
Claims (4)
1. Comfortable wind controlling means of developments of fan under sleep state based on rhythm of the heart, its characterized in that: the device comprises a fan, an environmental parameter acquisition module, a heart rate acquisition module, a metabolic rate calculation module, a processing module, a control module, a wind speed regulation module and a single chip microcomputer;
when the fan is started, the fan is in a sleep wind mode;
every K periods, the environment parameter acquisition module acquires the temperature and humidity of the surrounding environment and the average radiation temperature of the fan and sends the temperature and humidity and the average radiation temperature to the processing module;
every K periods, the heart rate acquisition module monitors a heart rate signal HR of the user and sends the heart rate signal HR to the metabolic rate calculation module;
the metabolic rate calculation module processes the heart rate signal to obtain a metabolic rate signal f (met) of the user and sends the metabolic rate signal f (met) to the processing module;
the metabolic rate signal and the heart rate signal correspond as follows:
HR is more than or equal to 75, the metabolic rate signal is f (met) is 1.0met, and the error range is [ -0.1met.0.1met ];
HR is in the interval [65,75), metabolic rate signal is f (met) 0.9met, error range is [ -0.1met,0.1met ];
HR is in the interval [55,65), metabolic rate signal is f (met) 0.8met, error range is [ -0.1met,0.1met ];
HR <55, metabolic rate signal f (met) 0.7met, error range [ -0.1met,0.1met ];
the processing module is used for presetting the heat resistance value of the bed mattress;
the processing module stores a standard effective temperature SET calculation model and a fan wind speed and temperature coupling model;
the standard effective temperature SET calculation model processes the temperature and the humidity of the surrounding environment, the average radiation temperature of a fan, a metabolic rate signal and a preset heat resistance value of a mattress to obtain a standard effective temperature SET signal;
the processing module judges whether the standard effective temperature SET signal is located in an interval [ k ]1，k2]If so, inputting a standard effective temperature SET signal into a fan wind speed and temperature coupling model; if the standard effective temperature SET signal<k1Then the processing module sends a minimum to the control moduleA wind speed signal; if the standard effective temperature SET signal>k2If so, the processing module sends a maximum wind speed signal to the control module;
calculating a reference wind speed V when the human body thermal sensation vote value TSV is 0 by using a fan wind speed and temperature coupling model under different thermal sensation TSV votes0The minimum wind speed Vmin when the human body thermal sensation voting value TSV is equal to 0.5 and the maximum wind speed Vmax when the human body thermal sensation voting value TSV is equal to-0.5;
the coupling model of the fan wind speed and the temperature under different thermal sensing TSV votes is as follows:
when TSV is-0.5, the maximum wind speed Vmax＝a×SET+b1；
When TSV is 0, the reference wind speed V0＝a×SET+b0；
When TSV is 0.5, minimum wind speed Vmin＝a×SET+b2；
In the formula, V is wind speed; a. b0、b1、b2Is an empirical value;
the control module presets a wind speed fluctuation period T;
the control module receives a reference wind speed V0Generating a sine fluctuation function when the wind speed upper limit Vmax and the wind speed lower limit Vmin are reached, and feeding back the sine fluctuation function to the wind speed adjusting module;
when the control module receives the minimum wind speed signal, a minimum wind speed regulating and controlling signal is generated and fed back to the wind speed regulating module;
when the control module receives the maximum wind speed signal, a maximum wind speed regulating and controlling signal is generated and fed back to the wind speed regulating module;
the wind speed adjusting module adjusts the wind speed of the fan based on a sine fluctuation function, a maximum wind speed adjusting signal or a minimum wind speed adjusting signal;
the environment parameter acquisition module, the metabolic rate calculation module, the processing module, the control module and the wind speed regulation module are integrated in the single chip microcomputer.
2. The dynamic comfort wind control of a fan in a sleep state based on heart rate according to claim 1, characterized in that: the heart rate acquisition module is an intelligent bracelet.
3. Method of using the dynamic comfort wind regulating device of a fan in a sleep state based on heart rate according to claims 1 to 2, characterized in that it comprises the following steps:
1) starting the fan and adjusting the fan to a sleep mode;
2) every K periods, the environment parameter acquisition module acquires the temperature, the humidity and the average radiation temperature of the surrounding environment and sends the temperature, the humidity and the average radiation temperature to the processing module;
3) every K periods, the heart rate acquisition module monitors the heart rate signals of the user and sends the heart rate signals to the metabolic rate calculation module; the metabolic rate calculation module processes the heart rate signal to obtain a metabolic rate signal of a user and sends the metabolic rate signal to the processing module;
4) the processing module stores a standard effective temperature SET calculation model and a fan wind speed and temperature coupling model; the standard effective temperature SET calculation model processes the temperature, the humidity, the average radiation temperature, the metabolic rate signal and the preset heat resistance value of the mattress of the surrounding environment to obtain a standard effective temperature SET signal;
5) if the standard effective temperature SET signal is in the interval [ k ]1，k2]If so, the processing module inputs a standard effective temperature SET signal into the fan wind speed and temperature coupling model and goes to step 6);
if the standard effective temperature SET signal<k1If yes, the processing module sends a minimum wind speed signal to the control module, and the step 7) is carried out; if the standard effective temperature SET signal>k2If yes, the processing module sends a maximum wind speed signal to the control module, and the step 8) is carried out;
6) if the fan wind speed and temperature coupling model receives the standard effective temperature SET signal, the fan wind speed and temperature coupling model processes the standard effective temperature SET signal to obtain the reference wind speed V when the human body thermal sensation TSV is equal to 00The minimum wind speed Vmin when the human body thermal sensation TSV is equal to 0.5 and the maximum wind speed Vmax when the human body thermal sensation TSV is equal to-0.5 are fed back to the control module;
the control module is based on a preset wind speed fluctuation period T and a reference wind speed V0Generating a sine fluctuation function signal and feeding the sine fluctuation function signal back to the wind speed adjusting module;
7) if the control module receives the minimum wind speed signal, generating a minimum wind speed regulating and controlling signal and sending the minimum wind speed regulating and controlling signal to the wind speed regulating module;
8) if the control module receives the maximum wind speed signal, generating a maximum wind speed regulating signal and sending the maximum wind speed regulating signal to the wind speed regulating module;
9) if the wind speed adjusting module receives the sine fluctuation function signal, the wind speed of the fan is adjusted to be in sine fluctuation change within the range of the wind speed upper limit Vmax and the wind speed lower limit Vmin;
if the wind speed adjusting module receives the minimum wind speed adjusting signal, adjusting the wind speed of the fan to maintain the minimum wind speed Vmin unchanged;
and if the wind speed adjusting module receives the maximum wind speed adjusting signal, adjusting the wind speed of the fan to maintain the maximum wind speed Vmax unchanged.
4. The method of using a dynamic comfort wind control device for a fan during sleep based on heart rate according to claim 3, wherein the sinusoidal ripple function is as follows:
where T denotes the adjustment time and T denotes the period of the sinusoidal fluctuation.
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| CN114251792B (en) * | 2020-09-24 | 2023-04-25 | 海信空调有限公司 | Air conditioner control method and device and air conditioner |
| CN112983875B (en) * | 2021-03-29 | 2023-10-13 | 追觅科技(上海)有限公司 | Wind speed adjusting method and device and blowing equipment |
| CN114636237A (en) * | 2022-03-18 | 2022-06-17 | 青岛海尔空调器有限总公司 | Method, apparatus and storage medium for constructing thermal comfort model |
| CN114608172A (en) * | 2022-03-18 | 2022-06-10 | 青岛海尔空调器有限总公司 | Method and device for controlling air conditioner, air conditioner and storage medium |
| CN114608121A (en) * | 2022-03-18 | 2022-06-10 | 青岛海尔空调器有限总公司 | Method and device for controlling air conditioner, air conditioner and storage medium |
| CN115523177B (en) * | 2022-11-24 | 2023-03-10 | 苏州浪潮智能科技有限公司 | Fan rotating speed control method, device, equipment and medium |
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