JPH0674543A - Air-conditioner - Google Patents

Abstract

PURPOSE:To provide an air-conditioner capable of properly changing the velocity of air flow hitting a human body according to variation of the temporal heart rate of the human. CONSTITUTION:There are provided a heart rate sensor 11 for measuring the heart rate of a human, a receiver section 14 for receiving a signal issued from the heart rate sensor 11, and an air flow rate control device 21 for evaluating the variation level of the temporal heart rate of the human interlocked with the receiver section 14 and properly adjusting and changing an air flow in response to the result of the variation level or frequency variation of the variation of the temporal heart rate.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner with an oxygen supply device used for supplying oxygen in the interior of a refreshing room of a sports gym or office building, a building such as a general house, leisure facilities, hospitals, etc. Is.

[0002]

2. Description of the Related Art In recent years, as one measure for improving the comfort of the living environment and the function of human activities, it has been experimentally shown that the fluctuating airflow from the air conditioner has an excellent effect on physiological and psychological relaxation. Is also being proved.

For example, a paper (FRAGRANCE JAURLNAL1991) states that a 1 / f fluctuating wind close to natural wind improves comfort.
ー 1 “Fluctuation and comfort of nature”, Architectural magazine Vol.104, No.
1291.1989.10 "Fluctuations and sensations of wind" are scattered, and it is thought that effective use of the effect of airflow will help improve comfort in the living environment.

For that purpose, it is desirable not only to give fluctuations to the air flow, but also to generate an air flow having an appropriate fluctuation level in accordance with the physiological condition of the human being and maintain a comfortable condition.

Hereinafter, a conventional air conditioner will be described with reference to FIGS. 8, 9 and 10. The conventional air conditioner includes an indoor unit 1 and an outdoor unit 2 of the air conditioner. A heat exchanger 5 that heats or cools the air that has passed through an air filter 4 mounted inside the front grill 3 of the indoor unit 1.
And a cross flow fan 7 that blows this air from the blowing grille 6, and a wind direction louver 8 that controls the blowing direction.
And are housed inside the air conditioner indoor unit 1. Then, the outdoor unit 2 and the indoor unit are connected by the refrigerant pipe 9, and the heat exchanger 5 is cooled or heated by the refrigerant to thereby cool the room 1
0 was air-conditioned. Further, the position of the wind direction louver is controlled by a motor (not shown) or the like so that the direction of the blown airflow can be determined in the direction preferred by the occupant. If the resident desires, the wind direction louver 8 can be swung so that a fluctuating wind can be obtained.

The operation of the air conditioner configured as above will be described below. The air sucked from the front grill 3 passes through the air filter 4, is deodorized and dust-collected, and is temperature-controlled by the heat exchanger 5, and then blown into the room from the blow-out grill 6. Further, a switch or the like sends a fluctuating wind, though monotonous, by the swing of the wind direction louver 8 as required by the resident.

[0007]

However, in an air conditioner such as the one described above, a person living in a room can always blow only an airflow with a constant wind speed or a monotonous fluctuating wind under any condition. However, there is a drawback in that it is not possible to properly blow air according to the above condition.

The present invention is to solve the above-mentioned conventional problems, and appropriately according to the level of the instantaneous heart rate of the human being, and according to the correlation level between the frequency of the instantaneous heart rate and the power spectrum of the heart rate variability. It is an object of the present invention to provide an air conditioner capable of sending an air flow of 1 / f fluctuation.

[0009]

To achieve this object, an air conditioner according to the present invention comprises a heartbeat sensor for detecting the heartbeat of a person living indoors and a receiver for receiving a signal transmitted from the heartbeat sensor. And an air volume control device capable of calculating an instantaneous heart rate based on a signal from the receiving section and automatically selecting an appropriate air blowing pattern according to the level.

Further, the air conditioner of the present invention accumulates and calculates the instantaneous heart rate as data, and controls the air flow blowing pattern so that the slope of the approximate straight line of the frequency and power spectrum of the instantaneous heart rate becomes 1 / f. It is an air conditioner that can.

[0011]

According to the present invention, according to the above configuration, an air flow having an optimum pattern can be blown into the room according to the level of the instantaneous heart rate of a human. Further, the frequency power spectrum of the instantaneous heart rate is further calculated, and the wind of 1 / f fluctuation is blown so that the frequency power spectrum of the frequency fluctuation of the instantaneous heart rate is proportional to 1 (1 / f) of the frequency fluctuation. It is a thing.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An air conditioner according to an embodiment of the present invention will be described below with reference to the drawings. The same parts as those in the conventional example are designated by the same reference numerals, and only different parts will be described.

The heart rate sensor 11 is, as shown in FIG.
The piezoelectric element 12 and the edge member 13 that fixes the piezoelectric element 12 and the pressure detected by the piezoelectric element 12 outside the piezoelectric element 12 are converted into a signal, and the signal is transmitted to the receiving unit 14 attached to the front surface of the air conditioner indoor unit 1. And a belt 16 for attaching these to a human body such as a wrist.

Further, a receiving portion 14 for receiving a signal transmitted from a heartbeat sensor 11 is provided below a blowout grill 6 provided on the front surface of the indoor unit 1 of the air conditioner, and a dust collecting deodorizing device is provided behind the front grill 3 for collecting dust. The air filter 4, the heat exchanger 5 for heating or cooling the air passing through the air filter 4, and the blower 7 are housed.

Reference numeral 17 denotes an air volume control device for changing the amount of blown air, which comprises a motor 18 capable of controlling the rotation speed by adjusting the voltage and the like, and a control section 19 for controlling the rotation speed of the motor 18. The control unit 19 includes a calculation unit 20 that calculates an instantaneous heart rate based on the data transmitted from the heart rate sensor 11, and a control device that controls the rotation speed of the motor 18 that rotates the blower 7 based on the calculation result. Become.

Further, the control unit 21 is interlocked with the receiving unit 14 so that the receiving unit 14 receives the data signal measured by the heartbeat sensor 11 at regular intervals, grasps the instantaneous heart rate, and adjusts to the tendency. The air volume control device 17 is controlled so that the strength of the air flow hitting a person who lives in the room is constant, or the level of the air flow is appropriately controlled so that the wind has a 1 / f fluctuation.

The operation of the air conditioner configured as described above will be described with reference to FIGS. 1 to 5. In general, the instantaneous heart rate of a human is about 60% ± 5% / min in a quiet and resting state, although there are individual differences. When the amount of activity increases, the heart rate also increases (Fig. 4). When the person becomes mentally irritated, nervous, or begins to get excited, the heart rate increases and the variation in the heart rate decreases. On the contrary, when the person relaxes, the heart rate tends to decrease and stabilize, and the heart rate tends to vary widely. That is, there is a negative correlation between the alertness level and the instantaneous heart rate variability (FIG. 5).

The variation of the instantaneous heart rate is, for example, 1
It can be said that the area A exceeding 0% has a strong drowsiness, and the area C having a small variation of 5% or less has a strong sense of tension and is irritated. The B region in the middle of A and C is in a relaxed state, and the relaxed state can be maintained by bringing the A or C region to the variation level of the instantaneous heartbeat in the B region.

Next, the operation of the air conditioner body will be described. First, the air sucked from the front grill 3 by the blower 7 passes through the air filter 4 and the heat exchanger 5,
Air whose temperature is controlled indoors is supplied from the blowing grill 6.

The receiving unit 14 receives the data measured from the heartbeat sensor 11 at regular intervals, and the calculating unit 20 calculates the instantaneous heart rate. Then, after accumulating the instantaneous heart rate data for a predetermined time (for example, 10 minutes), these variations are calculated. Further, if the variation in the instantaneous heart rate is larger than a predetermined value (for example, 10%), the sleepiness is strong, and therefore a command is sent to the control unit 19 to give a strong air flow. As a result, the motor 18 is controlled to be driven at a high rotation speed, and the person in the living area is stimulated to raise the awakening level.

On the contrary, if the variation is small (for example, 5% or less), it is determined that the feeling of tension is strong, and a wind pattern of 1 / f fluctuation (frequency component of fluctuation fluctuation) that is a ventilation pattern close to natural wind to relax the occupants. Controls the number of rotations of the motor 18 so as to send a wind pattern) that is inversely proportional to the power spectrum, and alleviates the feeling of tension. As a result, it creates a space where the residents can comfortably cope with their body when they are overly strained.

Next, a second embodiment of the air conditioner according to the present invention will be described with reference to the drawings. The first
The same components as those of the embodiment are denoted by the same reference numerals and detailed description thereof will be omitted.

In FIG. 6, reference numeral 22 is an arithmetic unit. The calculation unit 22 accumulates data on the instantaneous heart rate and variations in the instantaneous heart rate, and calculates the correlation between the instantaneous heart rate for 10 minutes and the power spectrum of the frequency of the variation (magnitude of variation), for example ( Frequency analysis).

This correlation is expressed by (Equation 1).

[0025]

[Equation 1]

In general, when n≈-1 in the above equation, a relaxed state, when n <<-1, tension, n >>-
When it is 1, it is said to represent a sleepy state. Therefore, based on the result n of the calculation, which state is represented is determined, and the mental state of the occupant is detected and determined.

Based on the result of the determination, the motor rotation speed is controlled so as to relax, that is, maintain the airflow level properly so that the state of n≈-1 is achieved, as in the first embodiment. In other words, when n <<-1, the wind is controlled to give a 1 / f wind that is close to the natural wind, and conversely, when n >>-1, it gives a certain amount of stimulus to the occupants, so it is controlled to send a strong wind. It is intended to give residents a relaxing and comfortable living space.

It is needless to say that the louver swing can be controlled not by the air volume (the number of revolutions of the blower) but by controlling the louver swing as a means for giving the air flow fluctuation.

[0029]

As described above, the air conditioner of the present invention includes a heartbeat sensor for detecting a human heartbeat, a receiving unit for receiving a heartbeat signal transmitted from the heartbeat sensor, and an interlocking operation with the receiving unit. Since it is an air conditioner that can control the strength of the airflow according to the variation level of the instantaneous heart rate of the human being, it can be relaxed in the case of tension in accordance with the level of the instantaneous heart rate of the human being, that is, the human tension level.
/ F Controls the fluctuating wind so that strong wind is sent to give a strong stimulus when sleepy.

Furthermore, based on a signal from a heartbeat sensor that detects the human heartbeat, data of the magnitude (power) (Pw) of the variation of the instantaneous heart rate is accumulated for a predetermined time, and the power spectrum of both is instantaneously breathed. 1 / Fluctuating frequency
Since the strength / fluctuation of the airflow is controlled so as to approach (1 / f), it is possible to generate an airflow of an appropriate level in the room at an appropriate time according to the tension level of the human.

As a result, it is possible to relieve the tension of the human being and, conversely, when the person is very sleepy, to stimulate by the air flow to form a living environment in which a physiologically and psychologically favorable effect is obtained.

[Brief description of drawings]

FIG. 1 is a block diagram of an air volume control according to a first embodiment of the present invention.

2A is a perspective view showing a state in which the heartbeat sensor according to the embodiment is attached to a wrist, FIG. 2B is an enlarged perspective view of a portion A of the heartbeat sensor according to the embodiment, and FIG. 2C is a cross-sectional view of the heartbeat sensor according to the embodiment.

FIG. 3 is a sectional perspective view of the air conditioner according to the same embodiment.

FIG. 4 is a characteristic diagram showing instantaneous heart rate and activity level.

FIG. 5 is a characteristic diagram showing variation in instantaneous heart rate and arousal level.

FIG. 6 is a control block diagram of the air volume in the second embodiment of the present invention.

FIG. 7 is a characteristic diagram showing frequency characteristics of instantaneous heart rate.

FIG. 8 is a front view of an air conditioner in a conventional example.

FIG. 9 is a schematic view of an installation example of an air conditioner in a conventional example.

FIG. 10 is a vertical sectional view of an air conditioner in a conventional example.

[Explanation of symbols]

 1 Indoor unit main body of air conditioner 11 Heart rate sensor 14 Reception unit 19 Control unit 20 Calculation unit 21 Air volume control device 22 Calculation unit

Claims (2)

[Claims] 1. A heartbeat sensor for detecting a human heartbeat,
A receiver attached to the indoor unit body that receives the signal transmitted from the heart rate sensor, a calculator that calculates the instantaneous heart rate of a person based on the signal from the receiver, and a large variation in the instantaneous heart rate. An air conditioner provided with a wind speed control device that changes the flow velocity of the air flow hitting the human body according to the height. 2. A heartbeat sensor for detecting a human heartbeat,
A receiver attached to the main body of the indoor unit for receiving a signal transmitted from the heartbeat sensor; and a power spectrum representing the fluctuation frequency f of the instantaneous heart rate and the magnitude of heartbeat variation based on the signal from the receiver. Based on the calculation unit and the calculation result of the correlation, the output level of the flow velocity of the air flow hitting the human body is inversely proportional to the variation frequency of the air flow so that the power spectrum of the fluctuation of the instantaneous heartbeat approaches one-hundredth of the variation frequency. An air conditioner equipped with an air flow control device that controls in this way.