JPH046077B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a control device for an electric blanket.

BACKGROUND TECHNOLOGY As shown in FIG. 9, a conventional electric blanket of this type includes a blanket body provided with an electric heater 1 and a temperature detection means 2 for detecting the temperature of the electric heater, and a temperature of the electric heater is set. This electric blanket is composed of a temperature setting means 5 and a control means 8 that controls the energization of the electric heater based on the signal from the temperature setting means 5 and the signal from the temperature detection means 2, so that even if you feel hot while sleeping, you can If I didn't change the setting scale, the power would be turned on at the same set temperature.

Problems to be Solved by the Invention However, with the above configuration, if the temperature inside the bed rises while sleeping, the user will feel hot and uncomfortable, and the setting scale must be changed, which is very time consuming. Another problem is that if you go to bed without changing the setting scale, you will sweat and your throat will be dry when you wake up.

The present invention aims to solve these problems by detecting the movement of a human body and correcting the set temperature.

Means for Solving the Problems In order to solve the above problems, the electric blanket of the present invention includes an electric heater, a temperature detection means for detecting temperature, and a body movement that is detected by temperature change, heat flow change, pressure change, etc. A blanket body equipped with a body movement detection means;
A temperature setting means for setting the temperature of the electric heater, a judgment means for determining body movement based on a change in the signal from the body movement detection means, integrating and storing the number of body movements, and a judgment means for determining the body movement based on a change in the signal from the temperature setting means and the judgment means. The apparatus includes a setting correction means for correcting the set temperature of the electric heater based on a signal, and a control means for controlling the electric heater based on the difference between the signal from the setting correction means and the signal from the temperature detection means.

Effects The present invention has the above-described configuration, and when the temperature inside the bed is high while sleeping, the number of body movements increases in order to adjust the body temperature, and this body movement is detected and the set temperature of the electric heater is corrected. As a result, you can sleep comfortably without waking up or becoming uncomfortable due to the heat, and the dryness of your throat caused by sweating is also alleviated. Further, unlike the conventional method, there is no need to revise and adjust the set temperature.

Embodiment Hereinafter, an embodiment of the present invention will be described based on FIGS. 1 and 2 of the accompanying drawings.

In FIG. 1, an electric heater 1, a temperature detection means 2, and a body movement detection means 3 are arranged in a blanket body 4, a temperature setting means 5 for setting the temperature of the electric heater 1, and a body movement detection means 3. A determining means 6 that determines whether the body has moved based on a change in the signal from the means 3 and integrates and stores the number of body movements;
An electronic blanket comprising a setting correcting means 7 for correcting the set temperature of the electric heater 1, and a control means 8 for controlling energization of the electric heater 1 based on the difference between the signal of the setting correcting means 7 and the signal of the temperature detecting means 2. be.

In the above configuration, when the body movement detecting means 3 detects a body movement such as turning over in bed, the determining means 6 determines that there has been a body movement based on the detection signal of the body movement detecting means 3, and also determines the number of body movements. It is accumulated and stored. The correcting means 7 corrects the set temperature based on the stored value. For example, as shown in FIG. 2, if the change in the detection signal V of the body movement detection means 3 is larger than a predetermined set value _V0 , the determination means 6 determines that there has been a body movement, and The number of movements is accumulated. If the integrated value S is greater than or equal to a certain value S ₀ , the correction means 7 corrects the set temperature T _s to be lower by a certain temperature Δt.

Due to the above-mentioned action, the set temperature is adjusted according to body movements, and the set temperature is lowered before the user feels hot and uncomfortable, so that the user can sleep in a comfortable state at all times.

The body movement detection means 3 is constituted by temperature detection means that detects the temperature of the blanket using a temperature sensor such as a thermistor. Note that this temperature detection means may also be used as the temperature detection means 2 provided on the blanket body 4. With this configuration, as shown in Figure 3, when the body moves, indoor air flows into the bed, causing the blanket temperature to drop (ΔT), but this temperature drop is lower than the predetermined set value. If it is large, it is determined that there is a body movement.

Further, the body movement detecting means 3 may have a configuration in which a pressure detecting means made of, for example, a piezoelectric element is disposed in the blanket body 4. With this configuration, as shown in Fig. 4, when there is a body movement, a voltage is generated depending on the degree of deformation of the piezoelectric element, but if the voltage value V is larger than a predetermined set value _V0 , It is judged as body movement.

Further, the body movement detection means 3 may have a structure in which a heat flow detection means is disposed in the blanket body 4. With this configuration, as shown in Figure 5, when the body moves, room air flows into the bed, causing the blanket temperature T to drop, and at the same time, a change in heat flow occurs on the surface of the blanket body. If ΔF is larger than a predetermined set value, it is determined that there is a body movement.

Other embodiments of the invention will be described below. In this embodiment, as shown in FIG. 6 and FIG.
determining means 62 for calculating the difference between the signal from the signal and determining that the body has moved based on the calculated value;
A calculation unit 6 that integrates and stores the number of body movements determined in
3, an output section 64 that sends a signal to a set temperature correcting means in order to correct the set temperature based on the signal from the computing section 63, and a display section 65 that displays the state of body movement based on the signal from the computing section 63.

In FIG. 3, the controller is provided with a display section for indicating the state of body movement, but a separate display section may be provided.

The operation of the above configuration will be explained based on FIG. 8. Here, the body movement detection means 3 is assumed to be a blanket temperature detection means that detects the blanket temperature T using a temperature sensor such as a thermistor. Note that the blanket temperature detection means may also be used as the temperature detection means 2 provided in the blanket body 4. In the determination means 6, the blanket temperature T1 detected by the body movement detection means 3 is stored in the storage section 61, and the blanket temperature T2 detected by the body movement detection means again after i minutes has passed and the blanket temperature T1 stored in the storage section 61 are stored. Calculate the difference ΔT (T2 − T1) between If ΔT is negative and its absolute value is greater than a predetermined set value D, it is determined that the body has moved.
The calculation unit 63 integrates and stores the number of body movements increased by j, and outputs it from the output unit 64. The setting correction means 7 corrects the set temperature according to the integrated value.

For example, as shown in Figure 8, after preheating, set temperature
Assuming that you go to bed at T _s1 , when you go to bed after preheating, the blanket temperature T will drop due to the inflow of indoor air into the bed and the influence of your body temperature, but if the temperature drop after i minutes is greater than D, it is considered a body movement. It will be judged. Further, even when the body moves after sleeping, room air flows into the bed, and the blanket temperature T decreases. In this case as well, if the temperature drop after i minutes is greater than D, it is determined that there is a body movement. The calculation unit 63 integrates and stores the number of body movements for j minutes. When the integrated value S is larger than S ₀ , the setting correction means 7 lowers the set temperature T _s by Δt degrees.
The display unit 65 displays the integrated value of the number of body movements calculated by the calculation unit 63.

As a result of the above action, when the temperature inside the bed is high, people will move more often to relieve the heat, but since this body movement is detected and the temperature setting of the blanket is adjusted, you will not feel hot and uncomfortable. This has the effect of reducing the amount of sweat caused by the heat, and reducing thirst when you wake up. Furthermore, since the number of body movements during a deep sleep is small, for example, the progress of body movements during sleep is displayed on the display section 65, making it possible to check whether or not you have slept soundly.In addition, it can be used as a barometer for health management. It has great effects if you can use it.

Effects of the Invention As described above, the electric blanket of the present invention provides the following effects.

(1) If you feel hot while sleeping, you don't have to change the settings because the set temperature is adjusted according to your body movements, saving you time and effort.

(2) While falling asleep, even if the bed is high, the set temperature is adjusted according to body movements, so you can sleep in a comfortable state without waking up to heat and feeling uncomfortable.

(3) Since you don't feel as hot, your thirst from sweating will be alleviated.

[Brief explanation of drawings]

Fig. 1 is a block diagram of an electric blanket according to an embodiment of the present invention, Fig. 2 is an operation diagram of the same embodiment, and Figs.
6 is a diagram of the output waveform of the body motion detection means, FIG. 6 is a configuration diagram of the determination means of the embodiment of the present invention, FIG. 7 is an external view of the embodiment, FIG. 8 is an operation diagram of the embodiment, and FIG. FIG. 9 is a block diagram of a conventional electric blanket. 1... Electric heater, 2... Temperature detection means, 3...
... Body movement detection means, 4 ... Blanket body, 5 ... Temperature setting means, 6 ... Judgment means, 7 ... Setting correction means,
8... Control means.

Claims (1)

[Scope of Claims] 1. A blanket body provided with an electric heater, temperature detection means for detecting temperature, and body movement detection means for detecting body movements such as turning over in bed, and temperature setting means for setting the temperature of the electric heater. a determination means for determining body movement based on a signal from the body movement detection means; a setting correction means for modifying a set temperature based on the signals from the temperature setting means and the determination means; and a signal from the temperature detection means. An electric blanket comprising a control means for controlling energization to the heater based on a difference between the signal from the setting correction means. 2. The electric blanket according to claim 1, wherein the body movement detection means comprises temperature detection means provided on the blanket body to detect the temperature of the blanket. 3. The electric blanket according to claim 1, wherein the body movement detection means is comprised of pressure detection means provided on the blanket body. 4. The electric blanket according to claim 1, wherein the body movement detection means is comprised of a heat flow detection means provided on the blanket body. 5. The determining means includes a storage unit that stores a signal from the body movement detection unit, a determination unit that determines a body movement based on the signal in the storage unit and a signal from the body movement detection unit, and a determination unit that determines the number of body movements determined by the determination unit. an output section that sends a signal from the calculation section to the setting correction means, and a display section that displays the state of body movement based on the number of body movements stored in the calculation section. An electric blanket according to claim 1.