WO2011052860A1 - 온열치료기용 pcb 플레이트의 과열방지 회로 - Google Patents

온열치료기용 pcb 플레이트의 과열방지 회로 Download PDF

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Publication number
WO2011052860A1
WO2011052860A1 PCT/KR2010/001908 KR2010001908W WO2011052860A1 WO 2011052860 A1 WO2011052860 A1 WO 2011052860A1 KR 2010001908 W KR2010001908 W KR 2010001908W WO 2011052860 A1 WO2011052860 A1 WO 2011052860A1
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WO
WIPO (PCT)
Prior art keywords
pcb plate
signal line
control unit
multivibrator
control signal
Prior art date
Application number
PCT/KR2010/001908
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English (en)
French (fr)
Korean (ko)
Inventor
최병원
유준우
박창수
김용희
전재연
Original Assignee
(주)세라젬
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Publication date
Application filed by (주)세라젬 filed Critical (주)세라젬
Publication of WO2011052860A1 publication Critical patent/WO2011052860A1/ko

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F7/007—Heating or cooling appliances for medical or therapeutic treatment of the human body characterised by electric heating
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F7/08—Warming pads, pans or mats; Hot-water bottles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H1/00—Apparatus for passive exercising; Vibrating apparatus; Chiropractic devices, e.g. body impacting devices, external devices for briefly extending or aligning unbroken bones
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00017—Electrical control of surgical instruments
    • A61B2017/00115—Electrical control of surgical instruments with audible or visual output
    • A61B2017/00119—Electrical control of surgical instruments with audible or visual output alarm; indicating an abnormal situation
    • A61B2017/00123—Electrical control of surgical instruments with audible or visual output alarm; indicating an abnormal situation and automatic shutdown
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F7/007—Heating or cooling appliances for medical or therapeutic treatment of the human body characterised by electric heating
    • A61F2007/0077—Details of power supply
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F2007/0094—Heating or cooling appliances for medical or therapeutic treatment of the human body using a remote control
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/01—Constructive details
    • A61H2201/0119—Support for the device
    • A61H2201/0138—Support for the device incorporated in furniture
    • A61H2201/0142—Beds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/01—Constructive details
    • A61H2201/0173—Means for preventing injuries
    • A61H2201/0176—By stopping operation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/02—Characteristics of apparatus not provided for in the preceding codes heated or cooled
    • A61H2201/0221—Mechanism for heating or cooling
    • A61H2201/0228—Mechanism for heating or cooling heated by an electric resistance element
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/50—Control means thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2203/00—Additional characteristics concerning the patient
    • A61H2203/04—Position of the patient
    • A61H2203/0443—Position of the patient substantially horizontal
    • A61H2203/0456—Supine

Definitions

  • 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 inoperative. The overheat protection circuit of the PCB plate that can be blocked by.
  • the heat treatment device generates heat by using electric energy and provides thermal steaming 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.
  • Bed type thermotherapy machine is composed of a bed-type frame, the main shape is equipped with a main mat for heating the upper body of the user's upper body, and an auxiliary mat for heating the lower body of the user's body, 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 reciprocate 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.
  • 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.
  • 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 to contact their body parts while moving freely from the outside.
  • 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.
  • thermotherapy machines mount various components or devices on a PCB plate to perform various functions, which generate heat while consuming electric energy during operation.
  • PCB plate 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.
  • 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.
  • MCU main control unit
  • 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. It includes an AND gate for operation.
  • the safety control unit is characterized in that it is connected to the power supply that is turned on / off receiving the control signal calculated by the AND gate.
  • 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, 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.
  • 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.
  • 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.
  • thermotherapy device suitable for applying the overheat prevention circuit of the present invention
  • FIG. 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.
  • FIG. 4 illustrates a detailed circuit diagram of the safety control unit.
  • the present invention provides a circuit for preventing overheating of a PCB plate used in a thermotherapy device.
  • FIG. 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.
  • 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.
  • 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.
  • 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, which enables stable power supply. In addition, it can minimize product breakdown and lifespan due to irregular voltage.
  • SMPS power supply switch
  • 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.
  • 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.
  • the bed type thermal therapy device can be used by connecting a separate external ceramics (4), which, unlike the internal ceramics, can be used freely by the user gripping, according to his body, arms, legs, shoulders, neck It can be used usefully by being in close contact with a back part.
  • 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 electrical energy and the control signal, the heat is typically detected from the temperature sensor, the sensed temperature value is transferred back to the main control unit The control signal is received from the main controller.
  • FIG. 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
  • 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.
  • 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.
  • 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.
  • 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.
  • 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
  • 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 / OFF signal of the safety control unit 30.
  • 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.
  • the main control unit 20 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.
  • 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.
  • a power supply signal for example, an "HIGH” signal or an "ON” signal
  • thermotherapy device 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),
  • a power supply signal for example, an "HIGH” signal or an "ON” signal
  • 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).
  • the power supply signal for example, the "HIGH” signal or the "ON” signal
  • the clock signal is not normally generated or the clock signal is disconnected.
  • the multivibrator unit 34 that receives the clock signal generates a power-off signal (for example, a "LOW" signal or an "OFF” signal), and the AND gate is connected through the multi-line 32. Will be entered as (36).
  • 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.
  • 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.
  • 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.
  • the present invention when the components of the PCB plate of the heat treatment device causes abnormal overheating, it is possible to automatically cut off the supply of power energy, it is possible to protect the various components installed on the PCB plate.

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  • Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Vascular Medicine (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Biomedical Technology (AREA)
  • Engineering & Computer Science (AREA)
  • Epidemiology (AREA)
  • Pain & Pain Management (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Rehabilitation Therapy (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)
  • Radiation-Therapy Devices (AREA)
PCT/KR2010/001908 2009-10-29 2010-03-30 온열치료기용 pcb 플레이트의 과열방지 회로 WO2011052860A1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2009-0103365 2009-10-29
KR1020090103365A KR101037686B1 (ko) 2009-10-29 2009-10-29 온열치료기용 피씨비 플레이트의 과열방지 회로

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CN111064163B (zh) * 2019-10-21 2022-03-11 张国基 一种电路板异常温度的管理芯片系统

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