JPS5810101B2 - A method and device for controlling the conductor heat generation of a moxibustion device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for controlling heat generation in a moxibustion device, in which a conductor connected to a control main body by a lead wire is fixed to an appropriate part of the body and heated periodically. It is.

The first object of the present invention is to provide a moxibustion device that allows the person to be treated to set the upper limit temperature for heating by themselves, and that once the temperature is set, the heating is automatically repeated in the same setting. The object of the present invention is to obtain a method for controlling heat generation by a conductor.

A second object of the present invention is to obtain a conductor heat generation control device for a moxibustion device that can be electronically easily controlled by converting temperature setting and temperature detection into time pulses.

A third object of the present invention is to provide a moxibustion device that improves safety so that even if the temperature of the conductor gradually rises due to insufficient cooling, it will not exceed a set upper limit temperature. The goal is to obtain a child controller.

An embodiment of the present invention will be described along with an apparatus shown in the drawings.

First, a conductor E equipped with a heater D is connected to the control body A via a lead wire B and a pipe C.

This conductor E is formed flat so that it can be fixed to an appropriate part of the body with an adhesive tape or the like.

The control body A includes an astable multivibrator 1 as an oscillator, a monostable multivibrator 2 as a rest time setting circuit, a flip-flop circuit 3, a relay 4, a power supply circuit 5, a bush switch 6, and a temperature memory. A counter 7, which is a circuit, a counter 8, which is a temperature detection circuit, and a coincidence circuit 9 are connected in a wiring state described later.

The power supply circuit 5 is connected to a conductive power supply ■c1 from a commercial power supply 10 via a transformer 11, a full-wave rectifier circuit 12, and a smoothing capacitor 13, and also includes transistors 14, 15, a Zener diode 16, and a bias resistor. 11, a switch 21 equipped with a constant voltage constant current circuit including an adjustment resistor 18 and a smoothing capacitor 19 and a reset terminal 20;
A circuit operating power supply c2 is provided via the circuit.

Therefore, when the power supply circuit 5 is turned on, the output f of the flip-flop circuit 3.

is at the L level, so the output of the AND gate 22 is also at the L level, and the point d of the bush switch 6 is also at the L level, so the transistor 26 connected through the diodes 23 and 24 and the resistor 25 is turned off. be.

Therefore, the relay coil 27 is not energized and the heater D
The circuit is OFF and the pump P2 installed in the control body A is turned off.
A commercial power supply 10 is connected to 8, and a conductor E is connected to it through a pipe C.
Cooling air is sent to.

Then, when the button switch 6 is pressed, Sl is ONL,
S2 is switched to the C4 side.

At this moment, the transistor 35 is momentarily turned off by the capacitor 34, and the counter T is reset.

Also, the point d becomes H level and turns on the transistor 26.
energizes the relay coil 21, cuts off the energization to the pump 28, and starts energizing the heater D.
The gate of the ND circuit 29 is opened and the counter 7 starts counting the output pulses of the astable multivibrator 1.

At the same time, point m, which was at H level after passing through resistor 30,
By switching S2, it becomes L level, and NAND gate 3
A negative trigger signal is applied to the input f2 of the flip-flop circuit 3 consisting of 1 and 32.

This results in output f.

becomes H level and continues in this state.

However, since the condenser 33 is connected to the input f1, the moment the power is turned on, the input f1 automatically becomes L level, and the output f1.

is at L level.

If the button switch 6 is kept pressed in this state, the temperature of the skin surface in contact with the conductor E will gradually rise, and when the patient feels that the temperature is optimal, the button switch 6 will be released. .

As a result, the gate of the NAND circuit 29 closes, the counter 7 stops counting pulses, and the output terminals A, B, C
, D outputs an output converted to a binary code.

This state continues until the counter 7 is reset.

In addition, since the point a of the monostable multivibrator 2 falls to the ground due to S2, it becomes a negative signal and is triggered, turning on the transistor 36 and turning the transistor 37 off.
As a result of the FF, the transistor 38 turns on and the AN
Close D gate 22.

At this time, since the point a is also at the L level, the transistor 26 is turned off, cutting off the energization to the relay coil 27, stopping the energization to the heater D, and driving the pump 28.

Further, since the transistor 38 is turned on, the output of the NAND gate 39 becomes H level, and the counter 8 is reset.

Next, capacitor 40 of monostable multivibrator 2
When a certain period of time set by a time constant circuit including start.

At the same time, the output f of the flip-flop circuit 3.

Since is still at H level, the AND gate 22 is also opened, turning on the transistor 26 and starting energizing the heater D.

On the other hand, the output of the coincidence circuit 9 is always at H level, and the monostable multivibrator 2 is in a steady state unless the transistor 48 is ON.

Then, the temperature of the conductor E rises, but during this process, the counter 8 continues counting pulses, and the output terminals A and B.

C, D outputs and counter T output terminals A, B, C.

A matching circuit constantly compares the output of D.

That is, the coincidence circuit 9 includes exclusive OR circuits 41, 42, 43, 44, NOR circuits 45, 46, and a NAND circuit 47.

Therefore, when the output terminals A, B, C, and D of the counter 7.8 match, the exclusive OR circuit 41°42.4
All the outputs of the NOR circuits 45 and 44 are at the L level, and the outputs of the NOR circuits 45 and 46 are at the H level.Since point m is at the H level, the output of the NAND circuit 4T is at the L level.

Therefore, the transistor 48 is turned off and the 5 points are set to H level, and triggered by this + signal, the monostable multivibrator 2 is reversed, and as described above, the counter 8 is reset and the power supply to the heater D is cut off. , drives the pump 28.

Then, after a certain period of time has elapsed, the monostable multivibrator 2 is further reversed and enters a heating state, after which the same state is repeated.

In this way, the analog temperature rise is controlled by converting it into time by digital counting using pulses, and the astable multivibrator 1 incorporates a pulse width control circuit 49.

That is, a thermistor 50, which is a heat-sensitive element with a negative characteristic, is connected to the time constant circuit, and this thermistor 50 is set at an appropriate portion of the conductor E.

Therefore, when the temperature of the conductor E increases, the pulse width is narrowed, thereby substantially shortening the energization time, preventing the temperature from exceeding the set temperature, and improving safety.

Therefore, if the temperature trapped in the conductor E becomes higher than the initial setting and heating is started from a certain high point, the pulse width is short, so that the current is only turned on for a short period of time.

Further, a normally open switch 51 is provided in parallel to the capacitor 40 of the monostable multivibrator 2 in conjunction with the switch 21 provided in the power supply circuit 5 .

When this switch 21.51 is switched, the capacitor 40 is instantly discharged by the switch 51, and the monostable multivibrator 2 is returned to a steady state.
also reset.

This returns to the initial state, making it easy to adjust the temperature settings.

Furthermore, if the monostable multivibrator 2 is provided with a switch 52 so as to be able to open and close, manual operation using the bush switch 6 becomes possible.

Further, even in the case of automatic control, the temperature may not be set at the first heating, but after repeating three or four times of thermally stable heating.

Since the present invention is configured as described above, the patient can set the optimal upper limit temperature according to his or her own feelings, and this enables treatment that is adapted to the patient's feelings, which cannot be understood by others. In addition, once the temperature is set, the same state is repeated after that, so it is extremely easy to operate.Moreover, when looking at the control device, it converts temperature into time and uses a temperature storage circuit and temperature detection circuit using a counter. It is extremely easy to manufacture, and its operation is accurate.Moreover, since the oscillator is equipped with a pulse width control circuit using a heat-sensitive element, the time can be controlled in a state that matches the temperature of the conductor. This has the effect that the upper limit temperature can be maintained reliably and safety can be improved.

[Brief explanation of drawings]

The drawing shows an apparatus according to an embodiment of the present invention, and the first
The figure is a front view, and FIG. 2 is an electric circuit diagram. 1... Astable multivibrator (oscillator),
2... Monostable multivibrator (rest time setting circuit), 7... Counter (temperature memory circuit),
8... Counter (temperature detection circuit), 9...
... Matching circuit, 49 ... Pulse width control circuit, 5
0...Thermistor (thermal element), E...
- Conductor.

Claims (1)

[Scope of Claims] 1. At the start of treatment, the conductor is energized to raise the temperature, and the upper limit temperature that the patient feels is optimal is stored and set in the temperature storage circuit, and after this setting, the rest time setting circuit is activated. During the rest time, the conductor is turned off to cool it down, and after the rest time, the conductor is turned on to the upper limit temperature and then cut off, and the cycle is repeated. A method for controlling the conductor heat generation of a moxibustion device. 2. A temperature memory circuit that counts the pulses from the oscillator while the conductor is energized, and stops counting and stores the number of pulses when the switch is turned off at the upper limit temperature that the patient feels is optimal, and a temperature memory circuit that stores the number of pulses. A temperature detection circuit that counts pulses from the oscillator when electricity is applied to the conductor and converts the temperature rise into time to detect it, and compares the contents of this temperature detection circuit with the contents of the temperature storage circuit. 1. A conductor heat generation control device for a moxibustion device, comprising: a matching circuit that matches the above, and a rest time setting circuit that cuts off energization to the conductor for a certain period of time based on the output of the matching circuit. 3. A temperature memory circuit that counts the pulses from the oscillator while the conductor is energized, and when the switch is turned off at the upper limit temperature that the patient feels is optimal, the count is stopped and the number of pulses is memorized. A temperature detection circuit that counts pulses from the oscillator when electricity is applied to the conductor and converts the temperature rise into time to detect it, and compares the contents of this temperature detection circuit with the contents of the temperature storage circuit. a matching circuit that matches the above, a rest time setting circuit that cuts off current to the conductor for a certain period of time based on the output of the matching circuit, and a resistor that forms a time constant circuit of the oscillator, and is provided on the conductor side. 1. A conductor heat generation control device for a moxibustion device, comprising a pulse width control circuit comprising a heat sensitive element that changes the pulse width by changing its resistance value depending on the temperature.