KR100665355B1 - Method for controlling the temperature of forehead massage apparatus - Google Patents

Abstract

The present invention relates to a method for controlling a temperature of a cold / heat head massager, the method comprising: (a) applying, by a control unit, a first current to generate a cold stimulus to a thermoelectric element; (b) measuring, by the controller, the time that the first current is applied and determining whether the applied time has elapsed by the first time; (c) If the first time has not elapsed as a result of the determination of step (b), the control unit returns to step (a), and if the first time has elapsed, the control unit is on-stimulated to the thermoelectric element. Applying a second current to generate a; (d) determining, by the controller, whether the second time has elapsed by measuring the time that the second current is applied; (e) As a result of the determination in step (d), if the second time has not elapsed, the control unit returns to step (c), and if the second time has elapsed, the control unit again cools the thermoelectric element. Applying a third current to generate a stimulus; And (f) if the third time has not elapsed by determining whether the applied time is the third time by measuring the time when the third current is applied, and if the third time has not elapsed, the control unit performs step (e). Returning to and terminating the temperature control by the controller when the third time has elapsed; It includes.

Case, thermoelectric assembly, cold and hot plate, control unit, temperature sensing unit, temperature control unit

Description

Temperature control method for cold and hot head massager {Method for controlling the temperature of forehead massage apparatus}

1 is a cross-sectional view of a conventional topical skin cooler.

Figure 2a is an actual photograph showing the front of the cold and hot head massager according to an embodiment of the present invention.

Figure 2b is an actual photograph showing the back of the cold and hot head massager according to an embodiment of the present invention.

3 is a block diagram of a thermoelectric device assembly according to an embodiment of the present invention.

Figure 4 is a flow chart related to the temperature control method of cold and hot head massager according to an embodiment of the present invention.

Figure 5 is a real picture of measuring the hot and cold heat massage machine according to an embodiment of the present invention by a thermometer.

Figure 6 is a real picture of measuring the hot and cold head massager according to an embodiment of the present invention by AD instrument thermistor Pod.

Figure 7a is a diagram showing a primary cold stimulation subjective sensory evaluation protocol by a cold and hot head massager according to an embodiment of the present invention.

Figure 7b is a diagram showing a second cold magnetic pole subjective sensory evaluation protocol by a cold and hot head massager according to an embodiment of the present invention.

Figure 7c is a view showing a third cold stimulation subjective sensory evaluation protocol by a cold and hot head massager according to an embodiment of the present invention.

Figure 8a is a view showing the first step of the four times cold stimulation experiment protocol by the cold and hot head massager according to an embodiment of the present invention.

8B is a view showing two stages of a four-time cold stimulation experiment protocol by a cold and hot head massager according to an embodiment of the present invention.

8C is a view showing three steps of a two-time cold stimulation experiment protocol by a cold and hot head massager according to an embodiment of the present invention.

Figure 9 is a real picture of performing a first experiment with a cold and hot head massager according to an embodiment of the present invention.

10a is a graph of external temperature measurement of a cold and hot head massager measured for 6 minutes with a thermometer according to an embodiment of the present invention.

 10b is a graph of external temperature measurement of a cold and hot head massager measured for 10 minutes with a thermometer according to an embodiment of the present invention.

Figure 11a is a graph of external temperature measurement of a cold and hot head massager measured for 25 minutes with thermistor according to an embodiment of the present invention.

11b is a graph of external temperature measurement of a cold and hot head massager measured for 2 hours with thermistor according to one embodiment of the present invention.

12A is a temperature-curve graph of a primary cold stimulatory subjective sensory evaluation in accordance with one embodiment of the present invention.

12B is a temperature-curve graph of secondary cold stimulatory subjective sensory evaluation in accordance with an embodiment of the present invention.

12C is a temperature-curve graph of a third cold stimulatory subjective sensory evaluation in accordance with one embodiment of the present invention.

Figure 13a is a graph showing the change of LF and HF of the HRV before and after stimulation according to an embodiment of the present invention.

Figure 13b is a graph showing the change in LF / HF change of the HRV before and after cold stimulation in the first and second stage experiments according to an embodiment of the present invention.

13C is a graph showing a first experimental HRV analysis in accordance with one embodiment of the present invention.

14 is a graph showing the HRV analysis of the first experiment reproducibility experiment according to an embodiment of the present invention.

15 is a graph showing HRV analysis of steam and febrile according to one embodiment of the present invention.

Figure 16 is a graph of the comparison between the cold and heat syndrome of cold stimulation according to an embodiment of the present invention.

FIG. 17 is a graph illustrating a HRV analysis of a steam warm stimulation experiment according to an embodiment of the present invention. FIG.

18 is a diagram showing an optimal protocol for cold stimulation according to an embodiment of the present invention.

The present invention relates to a method for controlling a temperature of a cold / heat head massager, and more particularly, by controlling a temperature of a cold / heat head massager with a small input power, so that the skin feels cold more efficiently. It is about.

Regarding the skin irritation device using the conventional cold and hot heat, the Republic of Korea Patent Application No. 1995-020020 'Skin local cooling device using a thermoelectric semiconductor device' has been applied and registered.

1, the heat absorbing means including the thermoelectric module 2, the control means for controlling the heat absorbing means to repeat the cooling cycle, and the attachment means for attaching the heat absorbing means to the human body as shown in FIG. A heat absorbing means comprising a skin local cooling device thermoelectric module (2), control means for controlling the heat absorbing means to repeat a cooling cycle, and attachment means for attaching the heat absorbing means to a human body Characterized in that.

However, the present invention has a problem in that the temperature is not controlled in consideration of the physiological characteristics of the human body by merely turning on / off the power to cool the skin.

An object of the present invention is to solve the above problems, by applying different currents at different cycles to the thermoelectric element, it is possible to transfer the cold and heat stimulation to the skin in consideration of the physiological characteristics of the human body, and to minimize the applied power A thermal head massager provides a temperature control method.

The present invention for achieving the above object, relates to a method for controlling the temperature of the cold and hot head massager, the method comprising the steps of: (a) applying a first current for generating a cold stimulus to the thermoelectric element; (b) measuring, by the controller, the time that the first current is applied and determining whether the applied time has elapsed by the first time; (c) If the first time has not elapsed as a result of the determination of step (b), the control unit returns to step (a), and if the first time has elapsed, the control unit is on-stimulated to the thermoelectric element. Applying a second current to generate a; (d) determining, by the controller, whether the second time has elapsed by measuring the time that the second current is applied; (e) As a result of the determination in step (d), if the second time has not elapsed, the control unit returns to step (c), and if the second time has elapsed, the control unit again cools the thermoelectric element. Applying a third current to generate a stimulus; And (f) if the third time has not elapsed by determining whether the applied time is the third time by measuring the time when the third current is applied, and if the third time has not elapsed, the control unit performs step (e). Returning to and terminating the temperature control by the controller when the third time has elapsed; It includes.

Preferably, the first current and the third current are currents necessary for the temperature of the thermoelectric element to be 5 ° C. to 15 ° C.,

The second current is a current necessary for the temperature of the thermoelectric element to be 20 ° C to 35 ° C, and the second current is turned off for a second time when the temperature of the device itself is maintained at 20 ° C to 35 ° C. It is characterized in that the control of the current of the opposite polarity for a second time when the to 35 ℃ ℃ is not maintained.

Also preferably, the increase and decrease of the amount of current and time of each of the first current and the first time and the third current and the third time are controlled in opposite directions.

The first time and the third time may be within 20 minutes, and the second time may be 3 seconds or more.

Hereinafter, with reference to the accompanying drawings will be described in detail the present invention.

Referring to Figures 2a to 3 with respect to the structure of the hot and cold heat massage machine according to an embodiment of the present invention as follows.

Figure 2a is a real picture showing the front of the cold and hot head massager according to an embodiment of the present invention, Figure 2b is a real picture showing the back of the cold and hot head massager according to an embodiment of the present invention, Figure 3 Is a block diagram of a thermoelectric element assembly according to an embodiment of the present invention.

2A and 2B, the head massager structure according to an embodiment of the present invention includes a case 100 and a plurality of segmented thermoelectric assembly 200.

The case 100 is a lightweight material such as aluminum, and has a semicircular shape having an arbitrary curvature as a whole.

In addition, each of the plurality of segmented thermoelectric element assembly 200 is capable of flowing in accordance with the size of the user's head in a state fixed to the inside of the case 100, the function of cold and hot pack in a state seated on the user's forehead As shown in FIG. 3, a power supply 210, a controller 220, a thermoelectric element 230, a cold / hot plate 240, a temperature detector 250, and a temperature controller 260 are included. do.

The power supply unit 210 receives an AC current, converts the DC current, and then supplies the converted DC current.

In addition, the control unit 220 is the control unit 600 by adjusting the magnitude and direction of the current applied to the thermoelectric element 230, the temperature set in the temperature control unit 260 and the cold and hot plate detected by the temperature sensing unit 250 ( By comparing the difference in temperature of the 240 and controlling the current applied to the thermoelectric element 230 from the power supply 210 corresponding to the difference, it is possible to determine the amount of heat absorption and heat generation performed by the thermoelectric element 230 Perform the function.

In addition, the thermoelectric element 230 is formed adjacent to the cold and hot plate 240, and performs the function of simultaneously generating heat and endothermic function using the current supplied from the power supply unit 210.

In addition, the cold and hot plate 240 is adjacent to the thermoelectric element 230 receives the cold and warm air from the thermoelectric element 230 and performs the function of providing the cold and warmth to the user's skin.

In addition, the temperature detector 250 detects the temperature of the thermoelectric element 230 while connected to the thermoelectric element 230, and transmits the detected temperature information to the controller 220.

In addition, the temperature controller 260 performs a function of allowing the user to set the temperature of the thermoelectric element 230 as desired by the user in the state of being connected to the controller 220.

Referring to FIG. 4, a temperature control method of a cold / hot hair massager according to an embodiment of the present invention having the above-described configuration will be described.

 4 is a flowchart illustrating a method for controlling a temperature of a cold / hot hair massager according to another embodiment of the present invention.

The controller 220 applies a first current to the thermoelectric element 230 (S2).

In the present embodiment, the first current applied to the thermoelectric element 220 is set to a current necessary for the temperature of the thermoelectric element 230 to be 5 ° C. to 15 ° C., but the present invention is not limited thereto.

The controller 220 measures the time that the first current is applied and determines whether the first time has elapsed (S4).

In the present embodiment, the first time is set to 3 minutes, but the present invention is not limited thereto.

As a result of the determination in step S4, when the first time has not elapsed, the control unit 220 returns to the step S2, and when the first time has elapsed, the controller 220 controls the thermoelectric element ( A second current having a polarity opposite to that of the first current is applied to 230 (S6).

In the present embodiment, the second current is set to a current necessary for the temperature of the thermoelectric element 230 to be 20 ° C to 35 ° C, but the present invention is not limited thereto.

The control unit 220 measures the time that the second current is applied to determine whether the applied time has passed the second time (S8).

 In the present embodiment, the second time is set to 1 minute, but the present invention is not limited thereto.

 As a result of the determination in step S8, when the second time has not elapsed, the controller 220 returns to the step S6, and when the second time has elapsed, the controller 220 controls the thermoelectric element 230. In step S10, a third current is applied.

 In the present embodiment, the third current applied to the thermoelectric element 220 is set to a current necessary for the temperature of the thermoelectric element 230 to be 5 ° C to 15 ° C, but the present invention is not limited thereto.

 The controller 220 measures the time that the third current is applied to determine whether the applied time is the third time (S12), and when the third time has not elapsed, the controller 220 Returning to the step S10, and when the third time has elapsed, the controller 220 ends the temperature control of the cold and hot head massager according to an embodiment of the present invention.

In this embodiment, the first current value and the third current value are the same, and the second current value is set to a polarity opposite to the first current, so that the polarity of the current applied at each time in one operation period continues. The first time and the third time are the same, and the second time is set to be shorter than the first time, but the present invention is not limited thereto.

Referring to Figures 5 to 18 in detail the actual experimental process of the optimal stimulation protocol (cooling stimulation time, stimulation intensity, etc.) in the cold and hot head massager according to an embodiment of the present invention as follows.

1. Overview of Experiment Methods.

1.1 Subject Selection.

The test subjects were male students and the average number of students was 15. However, the number of test subjects was adjusted according to various test protocols. Subjects were checked for the use of similar products in the past, and preliminary questionnaires were taken into consideration, and they were excluded from the subjects if they had past medical history (e.g. epilepsy and seizures). In addition, since the state control of the subject is necessary first of all, the information on the experiment was blocked.

1.2 Progress of experimental studies.

This study took four steps.

(1) cold stimulation equipment evaluation

(2) Subjective sensory evaluation of cold stimulation

(3) 1st experiment

(4) 2nd experiment

First, the temperature characteristics of the cold and hot head massager (hereinafter referred to as "cold stimulation apparatus") according to the embodiment of the present invention used in this experiment were evaluated, and secondly, the subject's subjective subject to the temperature change. Sensory evaluation was performed. Based on this, we established a protocol for cold stimulation experiments that was predicted to be most appropriate and effective. Thirdly, the first experiment was conducted. In this study, the physiological changes of the human body were examined by applying various cold stimuli, and the experiments were conducted on 15 cases with the protocols considered most appropriate. Finally, after analyzing the results of the first experiment, the second experiment was planned. The contents of the experiments were to compare the experiments on the optical + auditory stimulation and the optical + auditory + cooling stimuli, and to identify the differences between the groups. Now let's take a look at the progress of each phase of experimental research.

1.2.1 Evaluation of cold stimulation equipment.

Prior to this study, an evaluation of the characteristics of the cold stimulation device was required. First, the temperature change when the cold stimulation device was operated was examined, and then the temperature change when the cold stimulation device was attached to the skin was examined. We also looked at the changes in the temperature of the device while it was running. Cold stimulation device temperature evaluation was carried out over the first and second by using a thermometer as shown in Figs. 5 and 6 and thermistor pod electrode of AD instrument.

1.2.2 Subjective sensory evaluation of cold stimulation.

In the previous evaluation of the device, we learned how the temperature of the cold stimulation device changes during cold stimulation and how the temperature changes when it comes into contact with the skin. In order to examine how the temperature change affects the subject, a total of three surveys were conducted for subjective sensory evaluation. The survey was conducted after the experiment.

However, this study excludes psychological experiments evaluating the improvement of cognitive ability because it is an experiment verifying the effect through one-time use (10-30 minutes). Please refer to the attached questionnaire. Six minutes were measured in the first evaluation, 13 minutes in the second evaluation, and 11 minutes in the third evaluation. The protocol of detailed evaluation is as shown in Figs. 7A to 7B.

The questionnaire was configured to display the temperature sensation in the interval felt by the unit of 30 seconds after dividing the size of the temperature sensation from -2 to 2, and after the end of the experiment, the change of heart, concentration, and subjective change of the stimulus, fit and comfort I was asked to answer questions.

1.2.3 First experiment.

There are several facts from the previous study on the characteristics of cold stimulation equipment through subjective sensory evaluation of cold stimulation.

First, when the cold stimulation device was operated to give a cold stimulus, the effective cold stimulation time was less than 3 minutes, and within 3 minutes, subjective feeling of comfort or cool was complied. will be. Therefore, a total of three experimental protocols were performed for the first experiment. In the first and second stages, six and three subjects were given a total of four cooling stimuli, respectively, and the experiments were performed. After confirming that the experimental results of the first and second stages were generally constant, the experiments of the first and second stages were performed. In step 3 by adjusting the length of time, the experiment was performed by giving a second cooling stimulus to three subjects. The three-stage protocol was judged to be the most efficient and appropriate cold stimulation protocol, and the HRV and EEG were measured by experiments on a total of 15 cases. The electrocardiogram of the Powerlab 800 of AD instrument and the bio amp of the EEG electrode were used for the measurement equipment.

8A to 8C are briefly protocols of experiments performed in the first, second, and third stages, and FIG. 9 is an actual photograph showing the first experiment using a cold stimulation device.

 1.2.4 Secondary Experiment.

The second experiment performed three additional experiments based on the results from the first experiment.

1.Reproducibility experiment of primary experiment 15 cases (including optical + audio + cooling stimulation)

2. Comparative experiment between case 1 (light, auditory stimulus) and case 2 (light, auditory, cold stimulation)

3. Experiment to confirm the difference according to the group of subjects

4. A warm-up stimulus test for Korean witnesses

First, in the second experiment, the first experiment was conducted with the same protocol for 15 cases to determine the reproducibility of the first experiment. However, the difference from the first experiment was that the second experiment included the optical + auditory stimulus to give the cooling stimulus.

The second experiment was an additional experiment to determine whether the light and auditory stimuli alone could induce changes in HF in HRV. In the same experimental protocol, only the light + auditory stimulus was given to the primary stimulus, and the light + auditory + cooling stimulus was given to the secondary stimulus.

Next, since the cooling stimulus is a temperature stimulus, it was an experiment to determine whether the change of the stimulus changes with the febrile phenomena, which is the Korean medicine dialectic theory. In order to conduct this experiment, the subjects were examined for the hyperthermia questionnaire through a web mail, and after the experiment was conducted, the experiment was divided into two groups, the syndrome and the syndrome.

Finally, an experiment was conducted to determine whether HF rises in warm-field stimulation when the temperature stimulus affects hyperthermia. The main analytical parameter of the second experiment was HRV, and EEG was measured and analyzed for reference.

1.3 Evaluation parameters of the experiment.

1.3.1 Heart Rater Variability

"Heart Rate Variability" or "Heart Rhythm", the Korean word for "heart rate micro-change" is a technique for measuring heart rate that changes every second and is currently recognized as a criterion for evaluating the function of the autonomic nervous system and the state of heart rate. The Autonomic Nerve System (ANS) is a nervous system that controls the function of each organ, including the heart of the human body, and autonomously controls the movements of the endocrine and digestive systems, but on the one hand it directly affects the mental or emotional state of the human. It is well known to influence the interaction of parasympathetic nerves and sympathetic nerves. When the human body is in a tense or emotional state of excitement, it accelerates the role of the sympathetic nerve in the autonomic nervous system, which is controlled independently of the human will, such as a faster heart rate, dilation of the pupils, and suppression of the digestive system. .

There are two methods for analyzing the heart rate microvariation, the frequency domain method and the time domain method. In terms of recording time, there are two types of analysis: short time analysis, which analyzes 5 minutes in minimum units, and long time analysis, which is measured and recorded for 24 hours.

(1) Time domain analysis

If more than one heart rate data is entered, the heart rate standard deviation value is calculated using the standard deviation equation shown below.

The general theory is that the higher the standard deviation, the healthier the body. Previously, the resting heart rhythm of the human body was believed to be monotonous and regular, but the actual rhythm observed was irregularly distributed. Irregularity is due to the normal activity of the body's autonomic nervous system. In this way, the heart rate standard deviation value calculated by the equation is used as the basic data of the stress index analysis to be calculated later.

(2) Frequency domain analysis

The analysis method in the frequency domain that represents the x- axis in the frequency band is known to be the most reliable when using the "short time analysis" in HRV analysis, and the time domain analysis and the more accurate autonomic nervous system antagonism are performed. It is recognized as an explanatory parameter .

The HRV used as a parameter in this study is frequency-domain analysis, and mainly observes HF (High Frequency) or HF norm and LF (Low Frequency) or LF norm and ratio (LF / HF) . For example, given cold stimulation, an increase in HF norm, or a decrease in ratio, indicates that parasympathetic nerves were activated. Conversely, when the LF norm increases or the ratio increases, the sympathetic nerve is activated.

Classification Corresponding frequency range Translate High Frequency Band (HF) 0.15 Hz to 0.4 Hz Parasympathetic Low Frequency Band (LF) 0.04 Hz to 0.15 Hz Sympathetic action Very Low Frequency Band (VLF) ≤0.04Hz In general, it is known to indicate the action of the autonomic nervous system necessary for improving the body, such as maintaining the temperature and demand for endocrine action

 1.3.2 EEG (Electro Encephalo Graphy)

□ Principle of EEG Generation and EEG Analysis

(1) EEG

In general, EEG records the electrical activity of nerve cells in the cerebral cortex through electrodes attached to the scalp. EEG was first discovered in 1929 by the German psychiatrist Hans Berger. Between 1929 and 1938 he did basic research on the application of EEG clinically and experimentally. Since then, with the development of epilepsy, various methods of measuring and interpreting brain waves have developed. The amplitude of the EEG is in the order of several hundreds of hundreds of frequencies and the frequency is between 0.1 Hz and several hundreds of Hz. The basic elements of EEG are Activity, Wave, and Rhythm. Activity refers to the change of potential, and selling refers to individual elements of activity. A rhythm refers to an activity consisting of repetitive waves with almost constant periods and waveforms. The amplitude does not have to be constant. Alpha para refers to alpha rhythm.

(2) Classification of EEG

The types of brain waves are shown in Table 2 below.

division Frequency (Hz) Characteristic δ wave 0.2-3.99 During normal adult sleep. It may also be caused by brain tumors, encephalitis, or consciousness disorders. 20 to 200 Hz amplitude θ wave 4-7.99 Determine creativity, learning ability. Occurs in a pleasant or dozing state. 20 to 100 Hz amplitude α wave 8-12.99 At rest of normal people. Occurs when a problem is solved or an accident occurs. 20 to 60 Hz amplitude β wave 13-30 When an adult is excited, anxious or nervous. Delay in decision making over time, causing distractions γ wave 31-50 It occurs relatively in the frontal and parietal lobes during arousal and excitement. 2 to 20 kHz amplitude

 (3) EEG analysis.

 The alpha wave has a frequency component between 8Hz and 13Hz, and it occurs when a normal person rests or solves a problem and thinks about it. Appears distinctly in the occipital region and decreases when visually stimulated. beta has a frequency component between 13 Hz and 30 Hz. Normal adults may appear when they are excited, anxious or nervous and may be induced by drugs such as anesthetics. If the beta wave persists, it can lead to delays or distractions in decision making. The gamma wave has a frequency component between 30 Hz and 50 Hz, appears at arousal and excitability, and occurs more frequently in the frontal and parietal lobes.

Delta waves have a frequency component of less than 4 Hz and occur in various parts of the brain during sleep in normal adults. It can also be caused by brain tumors, encephalitis, or consciousness disorders. Theta waves have a frequency component between 4Hz and 8Hz, and sapphire, and dominance of the waves means that many neurons in the cerebral cortex are active at the same time.

Normal adults develop when their alertness is reduced or when they are asleep and determine creativity and ability to learn. The main areas to be observed in this study are alpha waves , which occur when resting, problem solving and thinking activities, as shown in the above EEG interpretation. The frequency of the same time (3 minutes) is analyzed in each of the above time bands, and the total power of the alpha waves is compared. The amount of alpha waves before and after the stimulation will be compared.

1.3.3 Distinguish between steam and fever.

Since the stimulus mainly performed in this study was temperature (cold stimulation), a second experiment was conducted by dividing the subject into a cold diagnosis, a Korean diagnostic method. For the method of dividing the subject group into the Hanje group and the Dementia group, I referred to a paper called Feasibility Study (Ⅰ) for developing the hyperthermia questionnaire published in Korean Journal of Oriental Medicine.

In this paper, we made a questionnaire about a fever composed of 14 questions, each of which was based on the significance of symptoms related to a fever by referring to five medical books and books that have a medical contribution to the establishment of celiac disease, including fever. Produced.

In the second experiment, a questionnaire was conducted using this hyperthermia questionnaire, and the result of the collected questionnaire was converted into Z-score, and then the heat factor and the cold factor were obtained through the respective induction formulas. Values were obtained. Then, we divided the groups by calculating the probability of being febrile (P_heat) and the probability of being gynecological (P_cold) through the heat witness and the hanje factor.

2. Experimental results.

2.1 Evaluation of cold stimulation equipment.

Graphs of temperature curves measured with a thermometer and an AD instrument thermistor pod are shown in FIGS. 10A and 10B.

In the graph measured by thermometer, cold stimulation was given for 5 minutes after 30 seconds in the graph of 6 minutes, and cold stimulation for 18 minutes after 30 seconds in the graph of 20 minutes.

As shown in FIG. 10A and FIG. 10B, the cooler usually drops the temperature of 20-30 占 폚 to 5-15 占 폚. This suggests that the cooler operates to the extent that the human body can tolerate it. In addition, in the graph of 6 minutes, the temperature drops from 1 minute to 1 minute 30 seconds after stimulation, and then the temperature increases slightly after 4 minutes. In order to know more accurate characteristics, the experiment was extended to 20 minutes, and the difference between the lowest temperature and the high temperature was found to be 6-7 ℃ in the cold stimulation period of 18 minutes.

However, in order to reduce the error caused by performing the temperature measurement work manually, the measurement was performed using thermistor pod, and a graph showing the temperature change is shown in FIGS. 11A and 11B.

This experiment showed that the cold stimulation device operates within the limit of human endurance, and the temperature increased little by little after the first two to three minutes due to the characteristics of the cold stimulation device.

2.2 Subjective sensory evaluation of cold stimulation.

Subjective sensory experiments were conducted three times. 12A to 12C are averages of subjective indications of the temperature felt by the subjects by three cold stimulation protocols. On the graph, the upper part shows cold feeling, the lower part shows warm feeling, and the upper and lower axes represent standard deviation.

As a result of the survey after cooling stimulation, it was possible to estimate the stimulus intensity, stimulation time, and stimulation interval to apply an appropriate amount of cooling stimulation. The effective stimulation time of cooling stimulation was less than 10 minutes. One minute was concluded to be appropriate. In addition, the subjective sense of temperature of the subjects tended to increase concentration or comfort rather than discomfort, but statistical analysis was not performed due to the small number of samples. In terms of wearing the device, more than half of the subjects felt uncomfortable due to band tightening or weight.

2.3 First Experiment.

In 9 cases of experiments in which a total of 2 steps of experimental protocols were found, relatively clear results of the human body were obtained as shown in FIGS. 13A and 13B. As a result, it was found that parasympathetic nerve was activated and sympathetic nerve was suppressed by appropriate cooling stimulation.

The results of the experiment performed by the experimental protocol finally determined after the two-step experiment are shown in FIG. 13C.

As shown in FIG. 13C, it can be seen that the ratio of the ratio indicating the LF / HF in the primary cold stimulus is considerably dropped. It can be seen that these values are maintained again for one minute of no stimulation and then three minutes of the second cold stimulation, and then rise again in the five minute period of no stimulation. This experiment confirmed that cold stimulation activated parasympathetic nerves. However, only 10 of the 15 cases showed a marked increase in HF, and no increase in HF in the remaining 5 cases. In addition, the measurement results of EEG showed no change in the presence or absence of cold stimulation in the first experiment.

2.4 Secondary Experiment.

We found that the cold stimulation found in the first experimental study activates parasympathetic nerves, increasing the parameter HF of HRV. Based on this, let's take a look at the results of the second experiment.

First of all, 15 subjects underwent optical + auditory + cooling stimuli for 10 cases of HF increase among 15 cases. The results showed an increase in HF and a decrease in ratio over 15 cases. These results indicate to some extent that cold stimulation activates parasympathetic nerves, but cold stimulation with photo-acoustic stimulation activates parasympathetic nerves more reliably. Thus, it can be said that a device using an actual optical + auditory + cooling stimulus activates and stabilizes the parasympathetic nerves more reliably than only cold stimulation. In this sense, the first experiment of the second experiment is a reproducible experiment of the first experiment. 14 shows the average of ratios for 15 cases.

Second, in the case of the comparative experiment between the optical + auditory stimulus and the optical + auditory + cold stimulus, four subjects were tested. In four subjects, all four showed a marked increase in HF in optical + auditory + cold stimulation, and no increase in optical + auditory stimulation in two cases. In the other two cases, the increase in HF was observed, but in the case of 1 case, the change was not much larger than the addition of a cooling stimulus.

As a result, the addition of the cooling stimulus showed a 100% change in HRV, whereas only 50% of the photo-acoustic stimulus was changed.

Next, the cold stimulation experiment according to the group of subjects

1. Repeat cold stimulation experiment 3 times in 1 case of steam and heat syndrome

2. Cold stimulation experiments on 10 cases of diarrhea and 5 cases of diarrhea

It was done in two ways. First, in the first experiment, all three cases of febrile disease showed a definite ratio reduction, whereas in the case of Han syndrome, there was a general decrease in ratio, but the difference was not much larger than that of febrile disorder. However, since this is a preliminary experiment, each case is considered to be limited to statistical analysis. The results for the second experiment 15 cases will be discussed later after the graph below. A comparative graph of the average of the three experimental results is shown in FIG. 15.

Based on the above experiments, the ratios were analyzed for cold stimuli for fifteen cases and ten cases for five cases. Interestingly, in the case of steam syndrome, the ratio value dropped to the primary stimulus tended to increase from the secondary stimulus, and in the case of febrile syndrome, the secondary stimulus was lower than the primary stimulus. This suggests that HF norm increases in the case of heat syndrome than in the first and second cold stimuli, and in general, this indicates that people with heat disorder are increasingly positive for temperature stimuli, ie, cooling stimuli (where the ratio changes largely). Let's respond). On the other hand, in the case of steaming, HF norm decreases with respect to the second stimulation following the first stimulation. In general, the person with steaming gradually responds negatively to the cooling stimulus. The graph is as shown in FIG.

Lastly, the experiments were performed to give warm stimuli instead of cooling stimuli in 4 cases of Korean patients who had symptoms. The resulting graph is as shown in FIG. 17.

As shown in FIG. 17, the ratio (LF / HF) is also lowered on the cooling stimulus only when the subject is steamed. Compared to the first stimulus, the second stimulus is falling a little more, and after the stimulus, the ratio increases again. This suggests that temperature stimulation affects some degree of hyperthermia in humans. However, the case of experiment is small as 4 cases, so it is necessary to increase the number of subjects.

3. Discussion and conclusion.

In this study, we found that:

(1) The cooling stimulus at an appropriate degree and at an appropriate interval (more than 3 minutes) has not been found to cause any adverse effects on the human body as a result of subjective experiments and device characteristics. This has also been demonstrated by several other previous studies.

(2) The cooling intensity within a certain range and the periodic cooling stimulus within a specific range cause physiological changes of the human body. The main aspect of such physiological changes is observed through HRV, which leads to the activation of parasympathetic nerves and the suppression of sympathetic nerves, which means to relax the human body. This result was relatively clear. The results of the two stimulus experiments support this fact.

(3) Subjective sensory examination of the cooling stimulus confirmed that the time and frequency of the most appropriate and effective cooling stimulus were two cold stimuli of 3 minutes out of 17 minutes, the final protocol as shown in FIG. Could. In addition, the intensity of the stimulus was found to be the most suitable for the subject within this protocol in the evaluation of the temperature of the cold stimulation device. It is also interesting to note that the stimulus response tends to appear with the preference of the stimulus depending on the cold and heat conditions of the subject.

4. However, in case of EEG observed with HRV as a parameter, the test result was not clear and showed no significant significance.

5. In the course of this study, it is observed that moderate cooling stimulation on the forehead area is expected to have a positive effect on the human body. It should be revealed.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited to the drawing.

According to the present invention as described above, by applying a different current to the thermoelectric element in different cycles can be transferred to the hot and cold stimulation to the skin in consideration of the physiological characteristics of the human body, the temperature control method for cold and heat head massager to minimize the applied power Can be provided.

Claims (4)

 In the case and the thermoelectric element assembly, the thermoelectric element assembly is a temperature control method of the cold and hot head massager including a power supply, a control unit, a thermoelectric element, a cold and hot plate, a temperature sensing unit and a temperature control unit, (a) the control unit generating a cold stimulus to the thermoelectric element, and applying a first current to bring the temperature of the thermoelectric element to 5 ° C to 15 ° C; (b) measuring, by the controller, the time that the first current is applied and determining whether the applied time has elapsed by the first time; (c) when the first time has not elapsed as a result of the determination of step (b), the control unit returns to step (a), and when the first time has elapsed, the control unit sends the thermoelectric element to the thermoelectric element. When the temperature of the thermoelectric element is 20 ℃ to 35 ℃ to generate a warm stimulus, but the heat of the device itself if the 20 ℃ to 35 ℃ is maintained for a second time and the heat of the device itself 20 ℃ to 35 ℃ If is not maintained, applying a second current controlled by a current of opposite polarity for a second time; (d) determining, by the controller, whether the second time has elapsed by measuring the time that the second current is applied; (e) As a result of the determination in step (d), if the second time has not elapsed, the control unit returns to step (c), and if the second time has elapsed, the control unit again cools the thermoelectric element. Generate the stimulus, so that the temperature of the thermoelectric element is 5 ℃ to 15 ℃ Applying a third current to make; And (f) the controller measures the time that the third current is applied and determines whether the applied time has passed a third time, and if the third time has not elapsed, the controller returns to step (e). Returning, when the third time has elapsed, the controller terminating the temperature control; Cold and heat head massager temperature control method comprising a. delete The method of claim 1, The method of controlling the temperature of the hot / hot head massager according to claim 1, wherein the increase and decrease of the amount of current and the time of each of the first current and the first time, and the third current and the third time are controlled in opposite directions. The method of claim 1, The first time and the third time are within 20 minutes, And the second time is at least 3 seconds.

Images