JPS6331657A - Heat stimulating device for living body - Google Patents

Abstract

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

Description

[Detailed Description of the Invention] [Technical Field 1] The present invention is a thermal stimulation device for living organisms, and more specifically, it is used in devices that apply thermal stimulation to living organisms, such as carpets and electric blankets with built-in heaters. This article relates to a thermal stimulation device for living organisms that relieves the tension of those who are on the way.

[Back weight I support procedure 1 Many general heating devices are used only for the purpose of raising the temperature to a predetermined fA degree, and currently there are few that have been designed to be compatible with human burial. be. That is, in some general heating devices, the heat generating means is controlled to turn on and off at regular intervals as shown in FIG. 5, and in this device, the heat generating means is always in a hot state during the on period. During the off period, the heat generating means is in a cold state.

As a result, conditions that are too hot and too cold for the living body appear alternately, which poses the problem of poor compatibility with living body burial.

Considering compatibility with living body implants, it has been found that it is desirable to always be able to obtain fresh thermal stimulation. That is, it is known that applying thermal stimulation that includes fluctuations that are comfortable for the living body to the living body is effective in relieving tension.

[Object of the Invention] The present invention has been made in view of the above-mentioned points, and its main purpose is to achieve consistency with biological physiology by applying thermal stimulation including 17f fluctuations to living organisms. An object of the present invention is to provide a thermal stimulator for a living body that can provide good thermal stimulation.

[Disclosure of the Invention] (Embodiment 1) As shown in PIS 1, the output of a random signal generation circuit 1 that generates white noise is input to a filter circuit 2.

The filter circuit 2 is configured such that the frequency response is inversely proportional to the input frequency, and the random signal generation circuit 1
A 17f fluctuation is generated based on the white noise that is the output of. That is, although the frequency and amplitude of the output of the random signal generation circuit 1 change irregularly over time and the power spectrum remains approximately constant, by passing the output of the random signal generation circuit 1 through the filter circuit 2, The power spectrum is inversely proportional to the frequency, the so-called 1/f
An output with characteristics can be obtained.

Such 17f fluctuations often exist in the natural world as fluctuation waveforms such as the sound of sea waves, the sound of babbling streams, and the breath of the wind, and are highly consistent with biological physiology and provide a pleasant stimulus. The output of the filter circuit 2 is inputted to a thermal stimulation device 4 such as a heater, which is a heat generating means, via a control circuit 3 that adjusts the output power in proportion to the output of the filter circuit 2 to the thermal stimulation device 4. That is, the random signal generation circuit 1, the filter circuit 2, and the control circuit 3 constitute a control means for generating a 1/f fluctuation waveform. therefore,
As shown in FIG. 2(α), the heating power device A 4 has a changing waveform of the heat generation power (heat amount per unit time) with a 1/T fluctuation waveform, and the power as shown in FIG. 2(b) As shown in the spectrum, the power is set so that it decreases by 3clB per octave in inverse proportion to the frequency. Since the thermal stimulus is very mellow, it has good consistency with the physiology of the body.

(Embodiment 2) In this embodiment, as shown in FIG. I try to control it. That is, an upper limit value θ1 and a lower limit value θ2 as shown in FIG. 4(a) are set in advance for the heat generation temperature of the heat generation device 4, and the heat generation temperature of the heat generation device 4 is controlled to fall within these ranges. It is something.

The time scale changing circuit 6 includes a filter that detects the upper limit value θI and the lower limit value θ2, and as shown in FIG. 4(a), when the heat generation temperature of the heat generating device 4 reaches the upper limit value θ1, f :IS4 As shown between the broken lines in Figure (b), El? of the output waveform of the random signal generation circuit 1? The control is performed so that the time axis is expanded (if the time axis is not expanded, the waveform will be as shown in the broken #i section of tIS4 diagram (c)). At this time, the time axis of the portion where the heat generation power decreases is extended (that is, the time period during which the heat generation power decreases is lengthened), thereby reducing the amount of heat generation as a whole. When the amount of heat generated decreases and the temperature of the heat generating device 4 reaches the lower limit value θ2, the time scale changing circuit 6 returns the time axis of the random signal generating circuit 1 to its original value.
The amount of heat generated by the heat generating device 4 is returned to its original value.

In this way, the amount of heat generated by the heat generating device 4 can be kept approximately between the preset upper limit value θ and the lower limit value θ2, and the heat generation temperature can be maintained at a desired temperature in a carpet, electric blanket, etc. equipped with a heater. This makes it possible to use the device within the temperature range that is most comfortable for living organisms.

[Effects of the Invention] As described above, the present invention includes a heat generating means that provides thermal stimulation to a living body, and a control means that changes the heat generation power of the heat generation means over time, and the control means controls the heat generation power to change at a changing frequency. The heating means is controlled so that it has a 17f fluctuation that is inversely proportional, and since the heating power has a 1/f fluctuation, it has the advantage that it can provide a mellow heat penetration that is consistent with biological physiology. -Theal with χ.

[Brief explanation of the drawing]

FIG. FIG. 5 is an explanatory diagram of the operation of the conventional example. 1 is a random signal generation circuit, 2 is a filter circuit, 3 is u
4 is a heat generating device, 5 is a thermistor, and 6 is a JP-A scale changing circuit.

Claims (2)

[Claims] (1) Equipped with a heat generating means that provides thermal stimulation to a living body, and a control means that changes the heat generation power of the heat generation means over time, and the control means is configured so that the heat generation power has a 1/f fluctuation that is inversely proportional to the changing frequency. A thermal stimulation device for a living body, characterized in that a heat generating means is controlled to (2) The control means includes a temperature detection element that detects the temperature of the heat generating means, and a temperature detecting element that detects the temperature of the heat generating means, so that the heat generating temperature of the heat generating means is adjusted to the upper limit value so that the heat generating temperature of the heat generating means is within a range between a preset upper limit value and a lower limit value. When the temperature reaches the lower limit, the time scale of the output waveform is expanded to reduce the amount of heat generated, and when the temperature reaches the lower limit, the time scale of the output waveform is expanded to increase the amount of heat generated. A biological thermal stimulation device according to claim 1.