JPH05228043A - Bed temperature and humidity control system - Google Patents

Abstract

(57) [Summary] [Purpose] To achieve comfortable temperature and humidity in the bed. [Composition] Temperature / humidity changing means 2, 5, 6, 8 capable of changing the temperature and humidity in the bed, a plurality of temperature sensors 3 and humidity sensors 4 for detecting the temperature and humidity in the bed, and a temperature sensor. 3 and a control means 7 for feedback-controlling the temperature / humidity varying means 2, 5, 6, 8 based on the outputs of the humidity sensor 4 and providing comfortable sleep.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bed temperature / humidity system for adjusting the temperature and humidity in a bed to provide a comfortable sleeping environment.

[0002]

2. Description of the Related Art Conventionally, in order to make the temperature at night comfortable, a method of adjusting the temperature with a wall-mounted air conditioner or a method of directly controlling the temperature inside the bed with an electric blanket has been used. ing.

[0003]

However, the air conditioner wall-mounted air conditioner has a problem that it is difficult to provide a comfortable air conditioner to a person sleeping in a bed because the temperature distribution and the air flow distribution vary.

The method using an electric blanket directly supplies heat to the human body, but since changes in body temperature due to sleep are not known, excessive heating often promotes sweating to disturb sleep. There are challenges.

An object of the present invention is to provide a bed system capable of providing a comfortable temperature environment on the bed during sleep in consideration of the problems of the conventional temperature adjusting method.

[0006]

SUMMARY OF THE INVENTION The present invention provides a temperature / humidity changing means for changing the temperature and humidity in a bed, a temperature sensor and a humidity sensor for detecting the temperature and humidity in the bed, and a temperature sensor and a humidity sensor. And a control means for feedback-controlling the temperature and humidity varying means by the output.

[0007]

In the present invention, the temperature sensor and the humidity sensor detect the temperature and humidity in the bed, and the control means controls
Since the temperature and humidity varying means is feedback-controlled by the output of the temperature sensor and humidity sensor, the humidity is detected in addition to the temperature, and the sleeping condition including the sweating condition is grasped and controlled to the optimum temperature and humidity environment. Can provide comfortable sleep.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. (Embodiment 1) FIG. 1A is a perspective view showing an embodiment of a betting system according to the present invention. Further, (B) is a schematic sectional view thereof. As shown in the figure, the bedding 1 includes, as temperature and humidity varying means, a blower mat 9 having a blowout hole 8 formed on its upper surface, and a heater 2 incorporated therein. The warm air unit 5 and the suction filter 6 are attached to the corners of the blower mat 9. The indoor air is sucked from the suction filter 6, and the warm air unit 5
The air is blown out to the entire blower mat 9, and the air or the warm air is blown into the bed through the blowout holes 8.

The heater 2, a large number of temperature sensors 3, a humidity sensor 4, and a warm air unit 5 are connected to a control circuit 7, and the control circuit 7 controls the temperature sensors so that the temperature and humidity inside the bed may be target values. The heater 2 and the warm air unit 5 are feedback-controlled according to the outputs of the sensor 3 and the humidity sensor 4. The temperature sensor 3 is a small thermistor, and the humidity sensor 4 is an electric resistance type sensor in which a thin film of a semiconductor polymer or fine powder is vapor-deposited on a ceramic substrate, or the expansion and contraction of a nylon ribbon due to a change in humidity. It uses a sensor.

The locations of the temperature sensor 3 and the humidity sensor 4 are as follows. The temperature sensor 3 and the humidity sensor 4 for detecting the temperature and humidity inside the bed are arranged in a line as shown in FIG. The position is preferably close to the back of the human body. This is because when the relationship between the temperature distribution in the bed and the skin temperature was examined, a temperature that was closest to the skin temperature and had little variation could be detected. This is considered to be due to the large body pressure area. That is, when an experiment was performed by having a subject enter the bed in the awake state in the bed and reporting the thermal sensation, sweating sensation, and comfort while measuring the skin temperature of each part, as shown in FIG. Moreover, the temperature of the back part correlated well with the thermal sensation of the person in the bed. As for humidity, as shown in FIG. 3, the humidity of the back part correlates well with a person's feeling of sweating. Further, by placing the humidity sensor 4 in the same place as the temperature sensor 3, it is possible to detect the humidity while detecting the body position with the temperature sensor 3, prevent the influence of the humidity in the bedroom, and detect the humidity change in accordance with the sweating state. it can.

Next, the operation of this embodiment will be described.

When the temperature of the temperature sensor 3 rises above 30 ° C., 5
If there is an increase of 0.5 ° C or more per minute, it is detected as being in bed. In the case of non-occupancy, preheating or pre-cooling is performed, and in the case of being in bed, temperature / humidity control is performed by inputting the temperature sensor 3 and the humidity sensor 4.

First, in preheating, if a target value is input to the control circuit 7, the warm air unit 5 can be operated while the feedback is provided by the output of the temperature sensor 3 in the bed to reach the target temperature. it can. If you enter the scheduled time to enter the floor with a timer, it will be efficient if you activate the preheat before the target value arrival time. On the contrary, summer in Japan is hot and humid, so it makes me sleepy. Therefore, when the warm air unit 5 is operated while the bedroom is being cooled, cold air is sucked in from the filter 6 and blown out from the blowout hole 8, so that the temperature inside the bed can be lowered and dehumidification can be performed, so that an environment that is easy to sleep is provided. it can.

Next, FIG. 4 is a block diagram showing an embodiment of the control circuit 7 for controlling the temperature and humidity in the bed when entering the bed. The detecting means 10 comprising the temperature sensor 3 and the humidity sensor 4 and the detecting means. Comprised of arithmetic means 11 for converting a signal from 10 into temperature and humidity, a fuzzy inference processor 12 for executing fuzzy inference, and a fuzzy inference storage device 13 for storing inference rules necessary when the fuzzy inference is executed. .. The detection means 10 is the temperature sensor 3 on the line.
The signals obtained by the humidity sensor 4 and the humidity sensor 4 are sent to the calculation means 11 where they are converted into temperature and humidity. The inference rules adopted in this embodiment are as follows and are stored in the fuzzy rule storage device 13. That is, a person's thermal sensation (S1) is determined based on the temperature in the bed (T, 3 steps LT: low temperature, MT: medium temperature, HT: high temperature), and the bed humidity (H, 2 steps LH: low humidity, HH: high). The feeling of sweating (S2) is estimated by the wetness. The estimation rule rule is shown below. Rule 1: IF T is LT and H is LH THEN S1 is COOL
(Cool) Rule 2: IF T is MT and H is LH THEN S1 is NEUTRA
L (neither) Rule 1: IF T is HT and H is LH THEN S1 is WARM
(Warm) Rule 1: IF T is LT and H is HH THEN S2 is PERSPI
RATION Rule 1: IF T is MT and H is HH THEN S2 is PERSPI
RATION Rule 1: IF T is HT and H is HH THEN S2 is PERSPI
RATION In order to determine the human sense (S1, S2) using this inference rule, fuzzy inference using a membership function as shown in FIG. 5 is performed. FIG. 5 (A) shows a thermal sensation (S1).
Is a membership function for COOL, NE
UTRAL, WARM, etc. are fuzzy sets. Figure 5
(B) is a membership function for the sweating sensation (S2), and PERSPIRATION is a fuzzy set. This FIG. 5 is obtained from a large number of experimental data regarding the human thermal sensation and sweating sensation. T uses the data of the temperature sensor showing the highest temperature among the temperature sensors on the line. This maximum temperature was 2 degrees lower than the skin temperature on the back, but the temperature change also followed and correlated well with the thermal sensation. COOL was reported below 31 degrees, and WARM was reported above 34 degrees. This thermal sensation is related to the temperature and humidity inside the bedroom. When the ambient temperature is low, the thermal sensation shifts to a higher level (that is, it is declared warm even at low temperatures), and when the humidity is high, the thermal sensation decreases. Shifted to. Also,
There are individual differences. Therefore, more accurate estimation can be performed by inputting the temperature and humidity of the bedroom (detected by the temperature sensor 3 and the humidity sensor 4 at the bed end) and the personal preference. Regarding sweating sensation, the correlation with the humidity at the highest temperature in the bed was examined, and the relative humidity was 6
At 5% or more, there was almost a PERSPIRATION declaration. In addition, even if the temperature in the bedroom is as low as 10 degrees, sweating is observed.
Sometimes it was judged as L. As described above, by using not only the temperature but also the humidity as the judgment material, the estimation accuracy is improved and the comfortable control according to the situation on the spot becomes possible.

As a control method, WARM or PERS is used.
When it is determined to be PIRATION, the warm air unit 5 is activated to blow air into the bed to lower the temperature and humidity in the bed.

At this time, if the air conditioner in the bedroom is also operated at the same time, the inside of the bed can be cooled efficiently. Next, when it is determined to be COOL, the heater 2 is turned on and heated. By controlling as described above, the NEUT
Keeping the bed in a RAL condition can provide an environment in which you can sleep deeply. The bed temperature and humidity are measured at 5-minute intervals, and finer control can be performed by setting the 1-minute intervals during heating and cooling control. In this way, fuzzy inference can accurately determine the vague quantities of human thermal sensation and sweating to provide a comfortable in-bed climate. (Example 2) As shown in Example 1, in addition to controlling the environment inside the bed by measuring the temperature and humidity in the bed every hour to estimate the thermal sensation and sweating feeling of the sleeping person, If 5 minutes later is estimated based on the amount of change from the previous measurement and control is started earlier, there is an advantage that less energy is needed to change the situation. Furthermore, assuming that the amount of change is large, when the temperature is not stabilized immediately after entering the bed, when you fall asleep and the temperature rises due to thermal sweating, and when the futon skips due to physical activity, When the room temperature drops near dawn and the temperature inside the bed drops, there are many cases where people awaken without prompt environmental control. Therefore, if the change amount is large, for example, if the temperature change is 1 degree or more in 5 minutes, or if the humidity change is 2% or more in 5 minutes, the control is expected to be performed 5 minutes after the measurement. .. In particular, when you enter the bed, you have a sensitive sensation, and the differences in your background (immediately after taking a bath, after sports, after eating, after resting, etc.) affect your feelings and physiological responses to temperature and humidity. It is necessary to control and put them to sleep quickly. On the other hand, if the person falls asleep, the temperature and humidity will be less fluctuated and the sensation will be dull. Therefore, the control will not be abrupt and the heating intensity of the heater may be small and the air flow rate will be small.

As described above, by detecting the amount of change together with the absolute values of the temperature and humidity inside the bed, it is possible to control in accordance with the sleeping state.

The control means of the present invention may be realized by software using a computer, or may be realized by using a dedicated hardware circuit having these respective functions.

Further, the temperature and humidity varying means of the present invention is the heater and the warm air unit in the above-mentioned embodiment, but it may be means for changing other temperature and humidity.

[0020]

According to the present invention, the temperature / humidity changing means capable of changing the temperature and humidity inside the bed, the plurality of temperature sensors and humidity sensors for detecting the temperature and humidity inside the bed, and the temperature sensor and humidity sensor. Since the control means for feedback-controlling the temperature / humidity varying means on the basis of the output of (1) is provided, it is possible to provide the optimum temperature / humidity in-bed climate according to the progress of sleep.

[Brief description of drawings]

FIG. 1 is a perspective view and a schematic sectional view of a bed temperature / humidity system according to an embodiment of the present invention.

FIG. 2 is a correlation diagram between the thermal sensation and the temperature in the bed according to the embodiment of the present invention.

FIG. 3 is a correlation diagram of a feeling of sweating and humidity in a bed according to an embodiment of the present invention.

FIG. 4 is a block diagram of fuzzy reasoning for feeling according to an embodiment of the present invention.

FIG. 5 is a diagram showing a membership function of a fuzzy variable for a sense according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bedding 2 Heater 3 Temperature sensor 4 Humidity sensor 5 Warm air unit 6 Suction filter 7 Control circuit (means) 8 Blowing hole 9 Blower mat 10 Detecting means 11 Computing means 12 Fuzzy inference processor 13 Fuzzy inference storage device

Claims (7)

[Claims] 1. A temperature / humidity varying means capable of changing the temperature and humidity inside the bed, a plurality of temperature sensors and humidity sensors for detecting the temperature and humidity inside the bed, and outputs to the temperature sensor and humidity sensor. A bed temperature / humidity system comprising: a control unit that feedback-controls the temperature / humidity changing unit based on the above. 2. The bed temperature / humidity system according to claim 1, wherein the temperature and humidity varying means also has a blowing function. 3. The bed temperature / humidity system according to claim 1, wherein the control means controls the temperature / humidity varying means according to the maximum temperature in the bed. 4. The bed temperature / humidity system according to claim 1, wherein the control means controls the temperature / humidity varying means according to the humidity of the highest temperature portion in the bed. 5. The bed temperature / humidity system according to claim 1, wherein the control unit controls the temperature / humidity changing unit according to an absolute value and a change amount of the temperature in the bed. 6. The bed temperature / humidity control means according to claim 1, wherein the control means controls the temperature / humidity varying means by determining whether the bed is in bed or not, based on the absolute value and change amount of the temperature in the bed. system. 7. The bed temperature / humidity system according to claim 1, wherein the control means controls the temperature / humidity varying means according to the absolute value and the amount of change in the humidity of the highest temperature portion in the bed.