JPS62106519A - Temperature controller - Google Patents

Abstract

PURPOSE:To set the temperature at a proper level with no operation at all after a user goes to bed by securing such a constitution where the temperature rise value is operated per unit time after a power supply switch is turned on and a high level and a proper level are switched automatically according to the result of said operation. CONSTITUTION:When a heater 8 starts to generate heat, the impedance of a temperature sensor 9 is reduced and the input value of a terminal (g) is gradually increased. A CPU5 operates the input value of the terminal (g) for each unit time. If this operated value, i.e., (temperature rise value/time = P) is equal to a constant A, the signal is delivered from a terminal (f). Then a transistor Q1 is turned on and a coil 4 of a relay is energized. Then a control contact 4a is closed and a variable resistance VR1 is short-circuited. A terminal (c) is set at a high level and the operation is maintained with a temperature set at a high scale. When a user goes to bed, (temperature rise value/time = P) is increased by the heat of the heater 8 and the heat of the user's body. The output of the terminal (f) is turned off with a time constant B and the coil 4 is not energized any more. Thus the contact 4a is opened and therefore the terminal (c) is set at a prescribed potential. Then the heater 8 is operated at the set temperature.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a temperature control device for creating a comfortable sleeping environment in a warming device for sleeping such as an electric blanket.

Conventional technology Conventionally, when sleeping with an electric blanket, you turn on the power switch, set the adjustment knob to the strong scale to preheat it, and then return it to the appropriate temperature when you go to bed.
As described in Japanese Utility Model Publication No. 132116 and Japanese Utility Model Publication No. 56-46314, a switch is provided to manually short-circuit a variable resistor for temperature setting, and preheating is performed.
Release 1111 when going to bed, or use special public service 111-2.
As shown in Japanese Patent No. 2159, there is a device that automatically returns to the set temperature when the strong scale temperature is reached, as a means to ensure warmth when entering the bed.

Problems to be Solved by the Invention However, when setting the strong scale manually in the past, you will feel warm when you go to bed, but if you fall asleep, the temperature will be on the strong scale and you will feel extremely hot. There was a risk of burns due to water leakage or lf.5. In addition, in order to prevent this, it was a hassle to always cancel the strong scale setting when going to bed. Also, reach high temperature)
After that, when I returned to the set temperature, I found that the 5th room was not sufficiently heated, and by the time I went to bed at 11h, my body was cold, so I couldn't get comfortable warmth at 15'F when I went to bed. Ta.

This product solves the above conventional problems and provides a temperature control device that automatically detects the state of entering the bed and lowers the temperature to the appropriate temperature to provide comfortable and safe warmth. The purpose is to

Means for solving the problem In order to solve the problem, the temperature control V of the present invention controls the heater and the energization of this heater:? i')
) control 12tI and the temperature of the heater [temperature l! ? A detection means, a temperature setting circuit for setting the temperature of the heater, a setting switching circuit for switching the temperature setting value of this temperature setting circuit, an output signal of the temperature detection means and an output signal of the temperature setting circuit as input signals. and a control circuit for controlling the power control unit as described in 1. +16
The circuit No. 11 is configured to calculate the full change of Onmaro 70 per unit time and drive the setting switching circuit based on the calculation result.

Effects According to the above configuration, just by turning on the power switch for 1J, it automatically determines that a human body is present and sets the desired setting scale, so it is not complicated for the user, and When you leave the bed in the middle of the night, the temperature automatically reaches the set temperature, and when you go back to bed, your cold body feels very warm, making it comfortable and easy to use.

Embodiment F An embodiment of the present invention will be described based on FIGS. 1 to 5.

Figure 1 is a circuit block diagram of the temperature II control device in one embodiment of the present invention, in which 1 is a commercial AC power supply, 2 is a power switch, 3 is a DC power supply, 4 is a relay coil, and 4a is a control contact of the relay. , 5 is microphone day-computer (hereinafter rc
PUj), 6 is a first A/D converter, 7 is a second A/D converter, 8 is a heater, 9 is a temperature sensor, 10 is an electrode wire, 5CR1 is a silicon controlled rectifier (hereinafter referred to as " Ql is a transistor, VR+ is a variable resistor, and R1-R4 are resistors. The temperature sensor 9 is
As shown in FIG. 2, a heater 8 is spirally wound around the inner peripheral surface, and an electrode wire 10 is spirally wound around the outer circular surface.

When the power switch 2 is turned on, the impedance of the temperature insulator 9 between the heater 8 and the electrode wire 10 becomes the first 8, /
It is read by the D converter 6 and input to the 9 terminal of the CPU 5. At this time, the fiA temperature sensor 9 is at a low temperature and its impedance is large as shown in FIG. 3, so the output value of the first A/D converter 6 is small. On the other hand, the second A/D converter 7 reads the potential at the connection point between the variable resistor VR1, the resistor R1, and the resistor R2 in the series circuit of the variable resistor VR1, the resistor R1, and the resistor R2, which determines the temperature setting value.
input to the terminal. The CPU 5 always compares the input value of the g terminal with the human input value of the C terminal, and determines that the input value of the C terminal is larger than the input value of the 1st terminal (hereinafter expressed as "C> g l"). At this time, a signal is output from the 0 terminal, which turns on the Lee Iristor 3CR+ and turns the heater 8 on to yh.
heat. When the heater 8 begins to heat up, the impedance at the temperature 9 decreases, and the input value at the 9 terminal gradually increases. The CPU 5 calculates the input value of the C terminal every unit time, and if this calculated value, that is, the temperature rise value/time - P is a constant Δ, a signal is output from the f terminal and the transistor Q1 is turned on. The coil 4 of the relay is energized, the control contact 4a is closed, and the variable resistor VR+ is short-circuited. As a result, the C terminal is set to a strong temperature, and operation at a strong scale temperature is maintained.

Next, when a person enters the bed, the temperature rise value 2/hour = P becomes large due to the heat 5 of the heater 8 and the light heat of the human body, which is constant at 331.
When it becomes B, the output of the terminal is turned off, the coil 4 of the relay is no longer excited, and the i, II I'll contact 1
a listens. Therefore, the C terminal becomes the set potential, and the heater 8
is operated at the set temperature. Here, it is assumed that constant B>constant A. Also, if you get out of bed for something like errands in the middle of the night, the average hourly rate will be 111th. When the value becomes A again and the set temperature is reached in the same way as described above, when the user goes to bed again, the set temperature is set. Figure 4 shows the relationship between time and temperature for the above operations.

Next, the flow of the i^ information processing by the CPU 5 will be explained using FIG. The output values of the first and second A/D converters 6゜7 are read, and then the magnitudes of these values are compared. , ・If the output value of the D converter 7 is correct, set the e terminal to low level.Also, the output value of the second A/D converter 7 is set to the first A/D converter 7.
If it is larger than the output value of the converter 6, set the e terminal to high level, then if the temperature upper gastric value, / time - P is A, set the f terminal to high level, and if P%'A, then P=8? determine,
If P=8, set [terminal to low level, if P≠8, set P
Determine whether =A or P-4A. Below, we will manipulate the above action.

Effects of the Invention As stated above, according to this Brahma, when the power switch is turned on, the temperature value per hour is calculated, and the temperature setting is automatically switched between the strong setting and the appropriate temperature setting based on the calculation result. This makes it extremely convenient to use, as the temperature can be adjusted to the appropriate temperature without any operations required after entering the bed.

Also, even if you leave your bed in the middle of the night, it will automatically turn to high, so when you come back to bed your body will be cold, so you can provide a warm and comfortable electric blanket.

[Brief explanation of drawings]

Figure 1 shows the temperature IIi ti at J5 in one embodiment of the present invention.
(] Komoki's circuit block diagram, Figure 2 is the same temperature fl, II
FIG. 3 is an explanatory diagram of the relationship between the temperature and impedance of the temperature sensor in the same temperature control system; FIG. The figure is an explanatory diagram of the relationship between time and temperature when using the same temperature control 6D H1ffi, and Figure 5 is the same temperature l! I
This is a flow diagram showing the operation of the microcombi in IItlpg and 1j. 4...Coil, 4a...City+1? JO contact, 5.
... Microphone []] Computer, 6... First A/D converter, 7... Second A/D converter, 8... Heater,
9... Temperature sensor 9.10... Electrode wire, SCR+ ・
...Silicon-controlled rectifier, Ql...transistor,
■R1...Variable resistance, 1Te1~R4...Resistance agent Yoshihiro Morimoto Figure 2. Figure 3 Temperature corner

Claims (1)

[Claims] 1. A heater, a power control element that controls energization of the heater, a temperature detection means that detects the temperature of the heater, a temperature setting circuit that sets the temperature of the heater, and a temperature setting value of the temperature setting circuit. a setting switching circuit for switching, and a control circuit for controlling the power control element using the output signal of the temperature detection means and the output signal of the temperature setting circuit as input signals, the control circuit controlling the temperature signal per unit time. A temperature control device configured to calculate a rate of change and drive the setting switching circuit based on the calculation result.