KR101037686B1 - Power Control Circuit for PCB Plate in the Hyperthermo-therapeutic Apparatus - Google Patents

Abstract

The present invention is a further improvement of the circuit of the PCB plate mounted inside the thermotherapy device that provides the thermal treatment effect and the thermal massage effect.

The circuit of the PCB plate according to the present invention includes a main control unit for detecting an overheating state of the PCB plate. The main control unit separately forms a control signal line for transmitting a normal control signal and a clock signal line for transmitting a clock signal, and connects the control signal line and the clock signal line to the safety control unit. The safety control unit logically multiplies the multivibrator unit connected to the clock signal line, the multi line transferring the signal generated by the multivibrator unit, and the signals input from the multi line and the control signal line. It includes an AND gate for operation. In addition, the safety control unit is characterized in that it is connected to a power supply that is turned on or off receiving the control signal calculated by the AND gate.

Thermal Therapy, Power Control Circuit, Temperature Sensing, Safety Device

Description

Power Control Circuit for PCB Plate in the Hyperthermo-therapeutic Apparatus}

The present invention relates to an overheat prevention circuit by a PCB plate of a heat treatment device. More specifically, when an overheating condition occurs in a PCB plate used in a heat treatment device, the power applied to the PCB plate is automatically supplied even when the main control unit is inoperable. The overheat protection circuit of the PCB plate that can be blocked by.

Heat treatment device generates heat by using electric energy and provides thermal effect and massage effect while touching or massaging a jade-based warmer that emits far infrared rays by heat source heated to high temperature. to be. Thermal therapy devices are evolving from passive to automatic, from portable to bed, and back-to-back.

In the thermal therapy device, the most representative product is a bed type thermal therapy device. Bed type heat therapy device is composed of a bed-type frame of the basic form, the main mat for heating the upper body of the user's upper body, and the auxiliary mat for heating the lower body of the user is equipped with, It is a product that allows the user to enjoy thermal steaming, acupressure, and far-infrared radiation effects while lying on the main mat and the auxiliary mat.

Bed type thermotherapy machine has a built-in heater in the inside of the main mat, and allows the heater to be reciprocated in the inside of the main mat by a motor, while using a ceramic heated to a high temperature by a power source. Therefore, the user can intensively treat the cervical spine, lumbar spine and spinal region of the user by the warming device under the state lying on the main mat.

In addition, the bed-type thermotherapy machine uses not only an internal ceramic that provides a thermal heating effect and far-infrared radiation effect by using high temperature heat inside the main mat, and the user grabs the arm, leg, and stomach by his or her hand. In addition, the outer conductor that can be used in contact with various parts of the body, such as shoulders, is detachably coupled to the connector. The inner ceramic is located inside the main mat to reciprocate, the user can set the reciprocating massage section by the mounting of the position sensor, it is possible to move smoothly bend along the shape of the spine by the ergonomic design. External ceramics can be used to be connected to the body of the heat treatment device along a long wire, there is an advantage that the user can be used in contact with their body parts while moving freely from the outside. In addition, the bed-type thermotherapy device includes an auxiliary mat for providing a thermal effect and far-infrared radiation effect on the user's lower body.

In general, thermotherapy machines mount various components or devices on a PCB plate to perform various functions, which generate heat while consuming electric energy during operation. When the PCB plate is overheated, various components or elements mounted thereon become difficult to operate normally, and when the PCB plate is overheated, various problems occur in the thermotherapy device.

In consideration of these points, the conventional thermotherapy device attaches a temperature sensor to various parts of the PCB plate. The temperature sensor senses the temperature of various components of the PCB plate and sends it to the main control unit (MCU), the main control unit (MCU) is to determine whether the abnormal parts of the overheated parts of the PCB plate. If it is determined that the main controller is overheated by exceeding a preset temperature in a specific part of the PCB plate, the main control unit sends a blocking signal to stop supply of electric energy to the specific part, thereby preventing overheating of the PCB plate.

By the way, in the conventional heat therapy device, unfortunately, the main control unit may be in a situation in which it does not operate normally. In such a case, despite the fact that the overheating situation is continuously progressing in the PCB plate. There was no separate means to terminate or block such a situation. In this case, it was a cause of destroying various components and various components mounted on the PCB plate, and even worse, there was a risk of fire. This is because the PCB plate is mounted inside the thermotherapy device, which is not only invisible to the user, but also because there is no additional means to detect externally, it becomes a more serious risk factor.

The present invention was devised to solve the problems of the conventional thermal therapy device as described above, and when various components mounted on the PCB plate exceed a preset temperature, even if the main control unit does not operate normally, It is an object of the present invention to provide an overheat prevention circuit of a PCB plate of a thermotherapy device that can protect various components and safely cope by cutting off the power applied to the PCB plate.

The present invention, in order to achieve the above object, is to further improve the circuit of the PCB plate mounted inside the heat treatment device that provides the user with a thermal bathing effect and a thermal massage effect.

The circuit of the PCB plate according to the present invention includes a main control unit for detecting an overheating state of the PCB plate. The main control unit separately forms a control signal line for transmitting a normal control signal and a clock signal line for transmitting a clock signal, and connects the control signal line and the clock signal line to the safety control unit. The safety control unit logically multiplies the multivibrator unit connected to the clock signal line, the multi line transferring the signal generated by the multivibrator unit, and the signals input from the multi line and the control signal line. Contains end gates to operate on. In addition, the safety control unit is characterized in that it is connected to a power supply that is turned on or off receiving the control signal calculated by the AND gate.

According to the present invention, in the heat treatment device, when the components of the PCB plate cause abnormal overheating, the main control unit blocks power energy applied to the specific components of the PCB plate primarily, thereby providing various It is possible to protect the components, and secondly, even when the main control unit fails or the main control unit is in an inoperable state, there is an advantage that the supply of main power energy can be automatically stopped.

Thus, the present invention is advantageously able to safely protect the components of the PCB plate even when the main control unit faces the worst situation.

In addition, the present invention can safely protect the components of the PCB plate irrespective of whether or not the main control part failure, and can cut off the power energy applied to the PCB plate, the worst situation that the PCB plate causes a fire due to overheating. There is an advantage that can be prevented.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention provides a circuit for preventing overheating of a PCB plate used in a thermotherapy device.

1 is a state diagram illustrating a bed type heat therapy device as a heat therapy device suitable for applying the overheat prevention circuit of the present invention. Therefore, the present invention can be used not only in the bed type heat therapy device, but also in the manual heat therapy device or the seated heat therapy device.

Bed type thermotherapy device includes a bed frame (1) that the user can lie down for treatment. The cradle installed on the upper side thereof may be detachably mounted to the LCD remote controller 2 for the user to input various control signals. The main mat 3 is placed on the upper side of the bed frame 1, and the inside of the main mat 3 is an internal ceramic (not shown) that provides a thermal heating effect and acupressure effect to the user by high temperature heat. Equipped with. In addition, a connector is formed on the side of the bed frame (1), the external ceramic (4) is coupled to provide a thermal heating effect to the external body of the user through the wire connected to the connector. On the other hand, the lower side of the main mat (3) is coupled to the auxiliary mat (5) to provide a thermal paste effect on the lower body of the user. In addition, the bed type thermal therapy device is a main input unit 6 for supplying electrical energy from the outside, and the main control unit 20 is operated according to the control signal of the LCD remote control and controls the supply and interruption of the electrical energy to the main mat It is included in (3).

Bed type heat therapy device is equipped with SMPS power supply (switch) which supplies electric energy suitable for heat source with power supply system to power input part 6 of bed frame 1 through which stable power supply is possible. In addition, it can minimize product breakdown and lifespan due to irregular voltage.

The bed type thermotherapy machine can precisely control the position of the inner pottery 3 reciprocating in the inside of the main mat 3 by inputting a preferred operating condition to the LCD remote controller 2 above, By raising or lowering the temperature, you can select an appropriate thermal bath function, and the position of the use point is adjusted according to the height of the user, so that the user can receive a massage that fits his body.

In addition, the bed-type thermotherapy machine can easily check the operating state of the product such as the inner ceramic (3) and calf acupressure through the LCD screen using the LCD remote control (2) installed in the holder. The auxiliary mat (5) can enjoy the thermal heating effect and the far infrared radiation effect by reciprocating the pressure ball installed therein or by the far infrared radiation panel mounted therein.

In addition, the bed type thermal therapy device can be used by connecting a separate external ceramics (4), which is different from the internal ceramics, so that the user can freely move by using the grip, according to his body, arms, legs, shoulders, neck It can be used usefully by being in close contact with a back part.

In the thermotherapy device, various components are operated by receiving control signals sent from the main control unit, and receive electrical energy and control signals required while being integrated on the PCB plate. Therefore, the PCB plate used in the heat treatment device generates heat by the electric energy and the control signal, and this heat is normally detected from the temperature sensor, and the sensed temperature value is transferred back to the main control unit. The control signal is received from the main controller.

2 is a block diagram illustrating an overheat protection circuit of a PCB plate according to an embodiment of the present invention, FIG. 3 is a detailed view of the overheat prevention circuit of the PCB plate of FIG. 2, and FIG. 4 is a detailed view of the safety control unit. The detailed circuit diagram is illustrated.

The present invention includes a PCB plate 10 having various components mounted thereon. The PCB plate 10 is equipped with a variety of components (12a, 12b, 12c) driven in the heat treatment device, the various components 12a, 12b, 12c is the main control unit 20 It is operated by the electric energy supplied from the power supply unit 40 in response to the control signal. The various components 12a, 12b, and 12c described above are, for example, components for operating field effect transistors (FETs), components necessary for operating an internal conductor, or components necessary for operating a driving motor. Or components for controlling the precise movement of the Shanghai fuselage. The various parts 12a, 12b, and 12c are generating heat by electric energy, and in order to prevent such negative effects from heat in advance, the temperature sensors 13a, 13b, and 13c are disposed around each other. ) Is being installed. The heat generated by the various parts 12a, 12b and 12c is detected by the temperature sensors 13a, 13b and 13c, and the temperature due to the detected heat is notified to the main controller 20. It is done.

The present invention is connected to the various components of the heat treatment device, and includes a main control unit 20 for controlling by generating an electrical control signal and sending a control signal to the various components.

In the present invention, the main control unit 20 controls the power switch unit 42 and the power supply unit 40 through the safety control unit 30. The main control unit 20 is formed by completely separating the clock signal line 24 together with the normal control signal line 22 and the conventional control signal line 22 and the clock signal line ( 24) are separately connected to the safety control unit 30, and through the organic action together with the safety control unit 30, the main control unit 20 will be in a worst case situation in which a malfunction occurs. Even in this case, the electric energy applied to the PCB plate can be blocked. More details are explained in the working relationship below.

The present invention includes a safety control unit 30 whose one side is connected to the main control unit 20 and the other side thereof is connected to the power switch unit 42.

In the present invention, the safety control unit 30 is a multivibrator unit 34, which is connected to the clock signal line 24 of the main control unit 20, and the normal control signal of the main control unit 20 And an AND gate 36 connected to the line 22 and the multi-line 32 carrying the signals from the multivibrator section 34 and logically multiplying them.

In the present invention, the multivibrator 34 has a technical feature in that it does not receive all the signals of the main controller 20, but only the clock signal generated by the main controller 20. have. The multivibrator 34 may selectively use any of the non-stable, monostable, or bistable types. Especially, it is preferable that the said multivibrator part 34 uses a monostable multivibrator. The multivibrator 34 is more preferably a retriggerable monostable multivibrator. Since the signal transmitted from the main controller 20 is a periodic clock signal, when the main controller 20 is normally operated, the signal is continuously received periodically, but the main controller 20 is the same. When is abnormally operated or inoperable, the clock signal is not generated normally, in which case the monostable type can distinguish the abnormal state from the normal state most accurately.

The present invention includes a power supply unit 40 that is operated by receiving a signal from the safety control unit 30. The power supply unit 40 is more preferably coupled to the front surface of the power switch unit 42 that is operated by receiving the signal directly from the safety control unit 30. It is preferable that the power switch unit 42 uses a switching mode power supply.

In the present invention, the power supply unit 40 is to supply or cut off the electrical energy to the various components of the PCB plate according to the signal from the safety control unit 30, the power switch unit 42 When the safety control unit 30 receives the OFF signal, the switch is cut off, and when the safety control unit 30 receives the ON signal, the switch is normally turned on. Therefore, the power supply unit 40 is to perform the function of supplying / blocking power energy according to the ON or OFF signal of the safety control unit 30.

The working relationship of the present invention configured as described above will be described.

Since the present invention relates to a safety circuit for a case in which any one or a plurality of components 12a, 12b, and 12c of the PCB plate 10 are overheated, it will be described with reference to this.

First, all components including the main control unit 20 are normally operated. At this time, if any one of the PCB plate 10, for example, the component 12c is overheated, the temperature sensor 13c adjacent to it quickly detects the overheating, and the temperature to the main control unit 20 Send. When it is determined that the temperature of the component 12c is overheated, the main controller 20 sends a control signal to the control signal line 22 to cut off power supply to the corresponding component 12c. And safety is ensured.

On the other hand, when the main control unit 20 does not operate normally, the worst situation where the main control unit 20 is still in a malfunction, while still sending a power supply signal to the control signal line 22. Let's look at it. In this case, the conventional thermal therapy device continuously transmits a power supply signal (for example, an "HIGH" signal or an "ON" signal) even though the main control unit 20 is in an inoperable state. Electrical energy is continuously supplied to 10, which causes the component 12c to be damaged due to overheating. In addition, since the PCB plate 10 is mounted inside the heat treatment device and is not observed from the outside, there is a risk of fire when electrical energy is continuously supplied.

However, in the present invention, such a concern can be completely solved by the following safe circuit configuration.

According to the present invention, when the main control unit 20 is in an inoperable state and continuously transmits a power supply signal (for example, an "HIGH" signal or an "ON" signal), By using two aspects, the safety effect of the thermotherapy device can be achieved. That is, since the main controller 20 is in an inoperable state, it uses a side in which a normal clock is not generated, and still uses a point in which a normal power supply signal is generated.

The present invention transmits the power supply signal (for example, the "HIGH" signal or the "ON" signal) generated by the main control unit 20 through the control signal line 22 as it is, and directly the AND gate ( 36).

Meanwhile, in the present invention, as long as the main controller 20 is in an inoperable state, the clock signal is not normally generated or the clock signal is disconnected. At this time, the multivibrator unit 34 that receives the clock signal generates a power-off signal (for example, a "LOW" signal or an "OFF" signal). It is input to the gate 36.

In the present invention, the AND gate 36 calculates a logical product to generate a power cutoff signal (eg, a LOW signal or an OFF signal), and input the cutoff signal to the power supply unit 40. do. The power supply unit 40 stops the supply of electrical energy to the corresponding component 12c of the PCB plate 10 by the blocking signal.

Therefore, the present invention is in the worst case in which the main control unit 20 is in a state in which the main control unit 20 substantially fails or is in an inoperable state and continuously generates an electric energy supply signal in the state. By the action of the safety control unit 30 will automatically cut off the power supply.

The present invention has been described by presenting one safety control unit 30 and one power supply unit 40 with respect to one main control unit 20 as the simplest exemplary view in the accompanying drawings, which is a simple example, which is modified. Note that you can speak different forms.

In addition, the present invention is not limited to the above embodiment, nor is it limited to the claims. It will be apparent to those skilled in the art that various modifications and imitations can be made without departing from the scope of the technical idea of the present invention.

1 is an exemplary view showing a state of use of a thermotherapy device suitable for applying the overheat prevention circuit of the present invention,

2 is a block diagram illustrating an overheat protection circuit of a PCB plate according to an embodiment of the present invention.

3 is a detailed view of the overheat prevention circuit of the PCB plate of FIG.

4 illustrates a detailed circuit diagram of the safety control unit.

* Explanation of symbols for the main parts of the drawings

10: PCB plate, 12a, 12b, 12c: parts

13a, 13b, 13c: temperature sensor, 20: main control unit,

22: control signal line, 24: clock signal line,

30: safety control unit, 32: multi-line,

34: multivibrator section, 36: end gate,

40: power supply unit, 42: power switch (SMPS)

Claims (5)

In the circuit of the PCB plate that is mounted inside the heat treatment device that provides the user with a thermal massage effect and thermal massage effect, The main controller 20 which detects the overheat state of the PCB plate 10 separately forms a control signal line 22 for transmitting a normal control signal and a clock signal line 24 for transmitting a clock signal. The control signal line 22 and the clock signal line 24 are connected to the safety control unit 30, The safety controller 30 includes a multivibrator 34 connected to the clock signal line 24, a multiline 32 that transmits a signal generated by the multivibrator 34, and the multiplier. And an AND gate 36 for calculating a logical product of the signal input from the line 32 and the control signal line 22, In addition, the safety control unit 30 is connected to the power supply unit 40 that is turned on or off receiving the control signal calculated by the AND gate 36, heat protection of the PCB plate for the heat treatment device. Circuit. The method of claim 1, The power supply unit 40 is coupled to the front of the power switch unit 42, which is operated by receiving a signal directly from the safety control unit 30, characterized in that, to prevent overheating of the PCB plate for the heat treatment device Circuit. The method according to claim 1 or 2, The multivibrator portion 34 used in the safety control unit 30 is characterized in that any one of the non-stable, monostable, or bistable type selectively used, overheat prevention circuit of the PCB plate for heat treatment. The method of claim 3, wherein The multivibrator portion 34 is characterized in that using a monostable multivibrator, overheat prevention circuit of the PCB plate for heat treatment. The method of claim 4, wherein The multivibrator portion 34 is a retriggerable monostable multivibrator, characterized in that the overheat prevention circuit of the PCB plate for heat treatment.

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