Shock protection circuit for a potential therapy device

Abstract

This invention relates to an anti-shock circuit for a potentiometric therapy device, which adjusts the output resistance or maintains a constant input voltage or output voltage in order to maintain a constant output current, thereby keeping the electric shock sensation constant according to the output voltage change of the potentiometric therapy device, and preventing the user from feeling uneasy due to sudden changes in the electric shock sensation.

Description

Technical Field

[0001] This invention relates to a device for treating the human body using a potential difference, and more particularly, to a technique for preventing electric shocks during treatment. Background Technology

[0002] An electrotherapy device is a device that achieves therapeutic effects by creating an electric field around the human body and stimulating the body with that electric field.

[0003] To this end, the electrotherapy device applies a high voltage to an insulated human body. At this time, since the indoor floor or walls around the human body are close to the ground with a potential of 0V, an electric field is formed between the high voltage and the floor or walls that serve as the ground.

[0004] As described above, the electrical output of the potentiometric therapy device varies depending on the treatment area, thus affecting the output current and consequently the perceived electric shock sensation. When the sensation changes with the current, the user may experience psychological unease and potentially develop a resistance to the device, hindering the successful treatment.

[0005] The inventors of this invention have diligently researched and developed a shock-proof circuit for electrotherapy devices to address the aforementioned problem of electric shock in existing electrotherapy devices. Through extensive efforts, they have developed a circuit capable of maintaining a constant electrical force regardless of voltage changes in the electrotherapy device. Summary of the Invention

[0006] Technical issues

[0007] The purpose of this invention is to provide an anti-shock circuit for a potential therapy device that can reduce the impact on the user caused by potential changes.

[0008] On the other hand, other objects of the invention not mentioned herein will be considered in addition to those which can be readily deduced from the following detailed description and its effects.

[0009] Solution to the problem

[0010] The electric shock prevention circuit of the potential therapy device according to the present invention includes: a power input unit for receiving AC power input; a transformer having an input tap connected to the power input unit and two or more output taps; two or more output resistors, one end of each output resistor being connected to the two or more output taps, the resistance value of the output resistor being proportional to the voltage of the output tap; a switching unit connected to the other end of the two or more output resistors to selectively output the voltage of the two or more output taps; and an output unit connected to the switching unit.

[0011] The resistance values ​​of the two or more output resistors are adjusted so that the output current of the two or more output taps is the same.

[0012] The electric shock prevention circuit of the aforementioned potential therapy device further includes: a voltage measuring unit for measuring the voltage of the aforementioned power input unit; an input switch unit for adjusting the voltage input to the input tap of the aforementioned transformer by means of a switch duty cycle; and a controller for adjusting the switch duty cycle of the aforementioned input switch unit according to the voltage measured by the aforementioned voltage measuring unit, so as to adjust the voltage input to the input tap of the aforementioned transformer to a constant value.

[0013] The electric shock prevention circuit of the aforementioned potential therapy device further includes: a voltage measuring unit for measuring the voltage of the output tap of the transformer; an input switching unit for adjusting the voltage input to the input tap of the transformer by means of the switching duty cycle; and a controller for adjusting the switching duty cycle of the input switching unit by means of the voltage measured by the voltage measuring unit, so as to adjust the voltage input to the input tap of the transformer to a constant value.

[0014] The electric shock protection circuit of the aforementioned potential therapy device further includes: an AC-DC transformer for converting the AC voltage of the aforementioned power input unit into a DC voltage; and an inverter for converting the DC voltage output by the aforementioned AC-DC transformer into an AC voltage and transmitting the converted AC voltage to the input tap of the aforementioned transformer.

[0015] The aforementioned output resistor is a variable resistor. The electric shock prevention circuit of the aforementioned potential therapy device further includes: a power supply measurement unit for measuring the voltage of the aforementioned power input unit or the voltage of the output tap of the aforementioned transformer; and a controller for adjusting the resistance value of the aforementioned output resistor according to the voltage measured by the aforementioned power supply measurement unit.

[0016] Invention Effects

[0017] According to the present invention, by applying a resistor according to the output voltage to the secondary side of a transformer used for potential output, it is possible to minimize the impact caused by voltage changes and provide a constant electric shock sensation.

[0018] On the other hand, although the effects are not specifically described herein, the effects and their temporary effects described in the following description and anticipated by the technical features of the present invention will also be considered as described in the specification of the present invention. Attached Figure Description

[0019] Figure 1 This is a circuit diagram of the anti-electric shock circuit of a potential therapy device according to a preferred embodiment of the present invention.

[0020] Figure 2 This is a circuit diagram of the anti-electric shock circuit of a potential therapy device according to another preferred embodiment of the present invention.

[0021] Figure 3 The circuit diagram is for the anti-electric shock circuit of a potential therapy device according to another preferred embodiment of the present invention.

[0022] Figure 4 The circuit diagram is for the anti-electric shock circuit of a potential therapy device according to another preferred embodiment of the present invention.

[0023] Figure 5 The circuit diagram is for the anti-electric shock circuit of a potential therapy device according to another preferred embodiment of the present invention. Detailed Implementation

[0024] Hereinafter, various embodiments of the present invention will be described with reference to the accompanying drawings, illustrating the structure of the invention and the effects produced by that structure. When describing the present invention, detailed descriptions of functions deemed to be well-known to those skilled in the art, i.e., matters familiar to those skilled in the art, will be omitted if they unnecessarily obscure the spirit of the invention.

[0025] The terms "first," "second," etc., can be used to describe various structural elements, but the aforementioned structural elements are not limited to these terms. These terms are only used to distinguish one structural element from another. For example, without departing from the scope of this invention, "first structural element" can be referred to as "second structural element," and similarly, "second structural element" can also be referred to as "first structural element." Furthermore, unless explicitly distinguished herein, singular designations should be understood to include plural designations. Unless otherwise defined, the terms used in the embodiments of this invention are to be interpreted as having meanings commonly known to those skilled in the art.

[0026] Hereinafter, with reference to the accompanying drawings, various embodiments of the present invention will be described to convey the structure of the invention and the effects produced by the structure.

[0027] Figure 1 This is a circuit diagram of the anti-electric shock circuit of a potential therapy device according to a preferred embodiment of the present invention.

[0028] The electric shock protection circuit 100 of the present invention is composed of a power input unit 110, a transformer 120, output resistors 130 and 132, a switch unit 140 and an output unit 150.

[0029] AC power is input to the power input unit 110 and transmitted to the input tap of the transformer 120.

[0030] Transformer 120 (TRANS) converts the AC input voltage into the voltage required by the potentiometric therapy device. For this purpose, transformer 120 consists of multiple taps with different output voltages.

[0031] Multiple output taps of transformer 120 are selected by switching unit 140 and transmitted to output unit 150 for potential therapy to the user.

[0032] If the output voltage is transmitted to the user as is, the user will experience a large electrical shock (electric shock), so output resistors 130 and 132 are needed to limit the output.

[0033] However, since the aforementioned electric shock sensation inevitably varies depending on the magnitude of the output voltage of transformer 120, it is necessary to minimize the electric shock sensation that varies with voltage. Therefore, output resistors 130 and 132 can be set to be proportional to the voltage of the output taps of transformer 120.

[0034] As the voltage at the output tap of transformer 120 increases, and the resistance values ​​of output resistors 130 and 132 are set to a higher value, the current delivered to the user will be similar. Therefore, the user will experience less change in the electric shock sensation due to the voltage change.

[0035] Alternatively, the ratio of the output voltage of transformer 120 to the ratio of the resistance of output resistors 130 and 132 can be set to be the same. If the ratio of the output voltage to the ratio of the resistance are the same, then since the current equals the voltage divided by the resistance, the output current of all output taps will be the same. Therefore, since the electric shock sensation based on the output voltage becomes the same, user anxiety can be reduced.

[0036] Figure 2 This is a circuit diagram of the anti-electric shock circuit of a potential therapy device according to another preferred embodiment of the present invention.

[0037] In addition to the power input unit 210, transformer 220, output resistors 230 and 232, switch unit 240 and output unit 250, the anti-electric shock circuit 200 according to another embodiment of the present invention may also include a voltage measurement unit 260, an input switch unit 270 and a controller 280.

[0038] Even if the resistance values ​​of the output resistors 230 and 232 are set to keep the output current of the output taps of the transformer 220 constant, the electric shock sensation felt by the user may change when the voltage of the power input unit 210 is unstable. This is because the transformer 220 converts the voltage to the output taps based on the voltage of the input taps, and therefore may be unstable depending on the input voltage.

[0039] Therefore, after the voltage of the power input unit 210 is measured by the voltage measurement unit 260, the controller 280 adjusts the duty cycle of the input switch unit 270 based on the measured voltage, so that the input voltage can be kept constant.

[0040] For this purpose, the voltage measurement unit 260 can use a low-voltage transformer to convert the input voltage, use a full-bridge rectifier to rectify it again, and then use a resistor to divide the voltage.

[0041] The controller 280 measures the stability of the input voltage by measuring the input voltage divided in the voltage measurement unit 260, and accordingly controls the switching duty cycle of the input switching unit 270, thereby keeping the output voltage of the transformer 220 constant. To this end, the controller 280 controls the switching duty cycle of the switching unit 270 by including one or more processors and a memory.

[0042] Figure 3 The circuit diagram is for the anti-electric shock circuit of a potential therapy device according to another preferred embodiment of the present invention.

[0043] In another embodiment of the present invention, the anti-electric shock circuit 300 may include, in addition to the power input unit 310, transformer 320, output resistors 330 and 332, switch unit 340 and output unit 350, a voltage measurement unit 360, an input switch unit 370 and a controller 380.

[0044] and Figure 2 The examples are different, in Figure 3 In the example, the voltage measurement unit 360 can be arranged at the output tap of the transformer 320.

[0045] The voltage measurement unit 360 consists of a resistor and a phototransistor to measure the output voltage.

[0046] The controller 380 consists of one or more processors and controllers, and can control the switching duty cycle of the input switching unit 370 by measuring the voltage of the voltage measuring unit 360. Therefore, the transformer 320 can output a constant output voltage by controlling the switching duty cycle of the input switching unit 370, and adjust the output current to a constant value by means of output resistors 330 and 332, thus creating an effect where the user cannot feel any change in the electric shock sensation due to voltage variations.

[0047] Figure 4 The circuit diagram is for the anti-electric shock circuit of a potential therapy device according to another preferred embodiment of the present invention.

[0048] In another embodiment of the present invention, the anti-electric shock circuit 400 may include, in addition to the power input unit 410, transformer 420, output resistors 430 and 432, switch unit 440 and output unit 450, an AC-DC converter 460 and an inverter 470.

[0049] The output voltage of transformer 420 depends on the input voltage of power input unit 410. Therefore, when the input voltage of power input unit 410 is stable, the output voltage of the output tap of transformer 420 can also be stable.

[0050] For this purpose, an AC-DC converter 460 and an inverter 470 can be used to stabilize the voltage.

[0051] The power converted to DC by the AC-DC converter 460 is converted back to AC by the inverter 470. At this time, since the inverter 470 generates AC power with a predetermined constant output voltage, the input voltage of the transformer 420 can be stabilized.

[0052] Since the output voltage of transformer 420 is converted into the same current through output resistors 430 and 432, the user cannot feel the electric shock changes according to the output voltage, thus preventing the user from feeling uneasy due to electric shock changes.

[0053] Figure 5 The circuit diagram is for the anti-electric shock circuit of a potential therapy device according to another preferred embodiment of the present invention.

[0054] In another embodiment of the present invention, the anti-electric shock circuit 500 may include, in addition to the power input unit 510, transformer 520, output resistors 530 and 532, switch unit 540 and output unit 550, a voltage measurement unit 560 and a controller 570.

[0055] The voltage measurement unit 560 can measure the voltage of the output taps of the power input unit 510 or the transformer 520.

[0056] The controller 570 may include one or more processors and a memory. The controller 570 adjusts the output current of the transformer 520 based on the measured voltage. The output current can be adjusted by regulating the resistance values ​​of the output resistors 530 and 532.

[0057] Therefore, output resistors 530 and 532 can be implemented using variable resistors. By adjusting the resistance value of the variable resistors, the output current of transformer 520 can be kept constant, thereby preventing users from feeling uneasy due to changes in the electric shock sensation.

[0058] According to the electric shock protection circuit of the present invention as described above, by maintaining the electric shock sensation that varies according to the output voltage of the potential therapy device, it has the effect of preventing the user from feeling uneasy due to sudden changes in the electric shock sensation.

[0059] The scope of protection of this invention is not limited to the embodiments described and expressed above. Furthermore, it should be reiterated that the scope of protection of this invention is not limited to obvious modifications or substitutions within the technical field to which this invention pertains.

Claims

1. An electric shock prevention circuit for a potential therapy device, characterized in that include: The power input unit receives AC power input; A transformer having an input tap connected to the aforementioned power input unit and two or more output taps; Two or more output resistors, one end of each of the above output resistors is connected to the above two or more output taps, and the resistance value of the above output resistors is proportional to the voltage of the above output taps; A switching unit, connected to the other end of the two or more output resistors, selectively outputs the voltage of the two or more output taps; and The output unit is connected to the aforementioned switch unit.

2. The shock protection circuit for a potential therapy device according to claim 1, characterized in that The resistance values ​​of the two or more output resistors are adjusted so that the output current of the two or more output taps is the same.

3. The shock protection circuit for a potential therapy device of claim 1, wherein, Also includes: A voltage measurement unit is used to measure the voltage of the aforementioned power input unit; An input switching unit is used to adjust the voltage input to the input taps of the aforementioned transformer by means of the switch duty cycle; and The controller adjusts the duty cycle of the input switch unit based on the voltage measured by the voltage measurement unit to keep the voltage input to the input tap of the transformer constant.

4. The anti-electric shock circuit of the potentiometric therapy device according to claim 1, characterized in that, Also includes: A voltage measurement unit is used to measure the voltage at the output taps of the aforementioned transformer; An input switching unit is used to adjust the voltage input to the input taps of the aforementioned transformer by means of the switch duty cycle; and The controller is used to adjust the switching duty cycle of the input switching unit by means of the voltage measured by the voltage measuring unit, so as to adjust the voltage input to the input tap of the transformer to a constant value.

5. The anti-electric shock circuit of the potentiometric therapy device according to claim 1, characterized in that, Also includes: An AC-DC transformer is used to convert the AC voltage of the aforementioned power input unit into DC voltage. and The inverter converts the DC voltage output from the aforementioned AC-DC transformer into AC voltage and transmits the converted AC voltage to the input taps of the aforementioned transformer.

6. The shock protection circuit for a potential therapy device of claim 1, wherein, The above-mentioned output resistor is a variable resistor. The electric shock protection circuit of the above-mentioned electrotherapy device also includes: A power supply measurement unit is used to measure the voltage of the power input unit or the voltage of the output taps of the transformer; and The controller is used to adjust the resistance value of the output resistor according to the voltage measured by the power supply measurement unit.

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