JPH0262611A - Warming equipment for sleeping - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

Conventional technology Conventional heating devices for sleeping such as electric blankets are slow to rise in bed temperature after the power is turned on, so for example, turn on the power 1 to 2 hours before going to bed and set the temperature setting scale at that time. Many people use it by setting it to the high position to provide a sufficient amount of heat to the room before going to bed, and then returning it to the normal setting when going to bed. However, with this method, if the user forgets to reset the settings when going to bed and falls asleep, there is a problem that the user may become too hot during the night and feel uncomfortable due to sweating, awakening, etc.

As a technology to solve this problem, when the power is turned on, a rapid heating circuit shorts the variable resistor for temperature setting, starts control at a strong setting, and then automatically resets the temperature after a certain time set by a timer etc. There is a method of improving the rise characteristics by removing the short circuit of the variable resistor and returning the temperature to the set temperature. FIG. 4 shows the temperature characteristics in the heater and in the bed and the temperature characteristics in the bed when the conventional technology is applied.

Problems to be Solved by the Invention However, in such a conventional configuration, counting starts when the power is turned on and automatically stops after a certain period of time, so the temperature sensor absorbs moisture, for example, as shown in Figure 4 (a). 4. If the main unit is simply cold,
Since the sensor impedance is higher than in Figure (b),
There was a problem in that the rise of the heater temperature was slow and the high setting was canceled before a sufficient amount of heat was supplied to the bed.

The problem of electric blankets becoming lukewarm due to the temperature sensor absorbing moisture often occurs, especially at the beginning of the winter season, when electric blankets that have been stored in a closet for a long time are taken out and used for the first time.

The present invention solves such conventional problems and aims to provide a heating device for sleeping that is more convenient to use.

Means for Solving the Problems In order to solve the above problems, the heating device for sleeping according to the present invention includes a main body provided with a heater and a temperature sensor for detecting the temperature of the heater, and a temperature of the main body is set to a set temperature. temperature control means for controlling the power supply to the heater so that the heater is supplied with power; strong preheating means for rapidly heating the heater for a certain period of time set by a first timer counter at a high setting regardless of the set temperature at the same time as the power is turned on; a second timer counter that counts a predetermined time at the same time as the power is turned on; and if the temperature of the sensor reaches a predetermined temperature when the second timer counter times up, the temperature is set by the strong preheating means. and a means for extending the time set by the strong preheating means if the temperature of the sensor does not reach a specified temperature when the second timer counter times up.

Effect With the above configuration, the subsequent strong setting holding time is determined depending on whether the sensor temperature after a predetermined time has elapsed (after the second timer counter times up) has reached the specified temperature. Even if the power is turned on while the bed is absorbing moisture, a sufficient amount of heat can be supplied to the bed.

EXAMPLE Hereinafter, an example of the present invention will be described based on the accompanying drawings. FIG. 1 is a circuit diagram of an electric blanket in one embodiment of the present invention. In FIG. 1, 1 is an AC power supply, 2 is a power switch, and 3 is a DC power supply unit which supplies power to a control unit including a microcomputer 4 (hereinafter referred to as microcomputer). A main body 5 includes a heater 51 and a temperature sensor 52. Reference numeral 6 denotes a temperature detection section that converts the AC temperature signal voltage applied to the temperature sensor 52 into a DC temperature signal voltage. 7 is a temperature setting section. Reference numeral 8 denotes a heater driving section, which outputs a trigger pulse and controls the thyristor 9 based on a microcomputer control output obtained by processing signals from the temperature detecting section 6 and the temperature setting section 7. 10
1 is a reset section of the microcomputer 4, and 11 is a clock section of the microcomputer 4. 12 is a strong setting cancel switch, and by pressing this switch, the strong setting that starts at the same time as the power is turned on can be canceled.

FIG. 2 is a flowchart of a program installed in the microcomputer 4. First, when the power switch 2 is turned on, the microcomputer 4 is reset by the reset unit 10, and the S
The program is executed from l. First, in SL, set the output terminal O of the microcomputer 4 to LOW (heater off).
Perform M check' etc. In S6, it is determined whether the strong setting release switch 12 has been pressed, and if it has not been pressed, the process moves to S3, and a signal is output from the output terminal O of the microcomputer 4 via the heater drive section 8 to turn on the thyristor 9. Control is started with the strong setting, and the first timer counter t1 and the second timer counter t2 start counting at the same time. In this case, the time until count-up is set so that the second timer counter is shorter than the first timer counter. When the second timer counter counts up in S4, the process moves to 55, where the signal from the temperature detection section 6 is inputted from the analog input terminal AN2 to detect the sensor temperature Vt.

In S6, this sensor temperature Vt and a predefined temperature T
are compared, and if Vt is higher than T, the process moves to S7. S7, S
At step 8, the heater 51 built into the main body is controlled at high temperature until the time set by the first timer counter counts up. Naturally, in 57, the sensor temperature is detected, compared with the strong temperature, and heater drive data is created, and the heater drive data is outputted to the output terminal to control the thyristor 9 via the heater drive section 8, and the heater 51 is activated. Turn on, turn off. Further, in S6, if the sensor temperature Vt is lower than the specified temperature T, the process moves to 910.

In SIO, the contents of the first timer counter are multiplied by a coefficient α to create new timer count data t3, and at 511 and 910, the temperature is increased until the time t3 set by the changed first timer counter counts up. , body 5
It controls a heater 51 built in. Similarly to 57, S10 detects the sensor temperature, compares it with the strong temperature, creates heater drive data, outputs the heater drive data to the output terminal 0, controls the thyristor 9 via the heater drive section 8, and turns on the heater 51. , turn off. If the first timer at S8 counts up, and the first timer after the change at 911
When the timer counts up, control of the heater 51 moves to S9, where a signal from the temperature setting section 7 is inputted from the analog input terminal ANI, and the heater 51 is controlled at the set temperature.

Note that if the strong setting release switch 12 is pressed in S2, the program jumps to S9. S9 but S7.9
Similar to 10, the sensor detects the temperature, compares it with the strong temperature, creates heater drive data, outputs the heater drive data to the output terminal, controls the thyristor 9 via the heater drive unit 8, and turns on and off the heater 51. do.

FIG. 3 shows the temperature characteristics of the heater and the temperature inside the bed of the above embodiment. For example, when the temperature sensor absorbs moisture as shown in (a), the temperature inside the bed rises slowly, so By extending the strong energization time t2 to +3, a sufficient amount of heat can be obtained in the main body. Moreover, when the main body is simply completely cold as shown in (b), the time for the heater temperature to reach the high temperature is short, and therefore the initial high current energization time t2 is sufficient.

In addition, although the prescribed temperature T is set to be slightly lower than high in FIG. 3, the temperature to be set is arbitrary, and it goes without saying that the temperature is not limited to this.

Effects of the Invention As is clear from the above description of the embodiments, the present invention extends the preheating time in response to the moisture absorption state of the temperature sensor of the main body of the heating device for sleeping when the power is turned on. It is extremely useful.

[Brief explanation of the drawing]

Fig. 1 is a circuit diagram of a heating device for sleeping according to an embodiment of the present invention, Fig. 2 is a flowchart of a program installed in the microcomputer of the heating device for sleeping, and Fig. 3 shows the temperature of the heating device for sleeping. FIG. 4 is a characteristic diagram showing the temperature rise of a conventional sleeping warming device. 4...Microcomputer, 5...
Main body, 8... Heater drive gL 9...
Thyristor, 11...Clock L51...
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Claims (1)

[Claims] (1) A main body provided with a heater and a temperature sensor that detects the temperature of the heater, a temperature control means that controls energization of the heater so that the temperature of the main body reaches a set temperature, and a temperature control means that controls the power supply to the heater. At the same time, regardless of the set temperature, the first setting is
strong preheating means that rapidly heats up for a certain period of time set by a timer counter; a second timer counter that counts a predetermined time at the same time as the power is turned on; and the sensor when the second timer counter times out. If the temperature of the sensor reaches a predetermined temperature, it will operate for the time set by the strong preheating means, and if the temperature of the sensor has not reached the predetermined temperature when the second timer counter times out. A heating device for sleeping, comprising means for extending the time set by the strong preheating means.