CN111632265A - Micro-current stimulation instrument - Google Patents

Micro-current stimulation instrument Download PDF

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Publication number
CN111632265A
CN111632265A CN202010606901.0A CN202010606901A CN111632265A CN 111632265 A CN111632265 A CN 111632265A CN 202010606901 A CN202010606901 A CN 202010606901A CN 111632265 A CN111632265 A CN 111632265A
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China
Prior art keywords
operational amplifier
resistor
power supply
module
current source
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CN202010606901.0A
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Chinese (zh)
Inventor
林熙权
陈泽麟
顾硕钊
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Guangzhou Health Medical Equipment Co ltd
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Guangzhou Health Medical Equipment Co ltd
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Priority to CN202010606901.0A priority Critical patent/CN111632265A/en
Publication of CN111632265A publication Critical patent/CN111632265A/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/02—Details
    • A61N1/025—Digital circuitry features of electrotherapy devices, e.g. memory, clocks, processors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/18—Applying electric currents by contact electrodes
    • A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
    • A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
    • A61N1/36014—External stimulators, e.g. with patch electrodes
    • A61N1/36025—External stimulators, e.g. with patch electrodes for treating a mental or cerebral condition
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/18—Applying electric currents by contact electrodes
    • A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
    • A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
    • A61N1/36014—External stimulators, e.g. with patch electrodes
    • A61N1/3603—Control systems
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/01—Details
    • H03K3/012—Modifications of generator to improve response time or to decrease power consumption
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/023—Generators characterised by the type of circuit or by the means used for producing pulses by the use of differential amplifiers or comparators, with internal or external positive feedback

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Biophysics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Child & Adolescent Psychology (AREA)
  • Developmental Disabilities (AREA)
  • Hospice & Palliative Care (AREA)
  • Neurology (AREA)
  • Psychiatry (AREA)
  • Psychology (AREA)
  • Social Psychology (AREA)
  • Electrotherapy Devices (AREA)

Abstract

The invention relates to a micro-current stimulator, which has the technical scheme that: the method comprises the following steps: the device comprises a key module, a real-time clock module, a display module, a Bluetooth module for receiving a control instruction of the mobile terminal, a microcontroller for converting the control instruction into a control signal and sending the control signal to a bipolar numerical control constant current source module, the bipolar numerical control constant current source module for correspondingly controlling the treatment head according to the control signal, and the treatment head; the key module, the real-time clock module, the display module and the Bluetooth module are respectively connected with the microcontroller; the microcontroller is connected with the treatment head through the bipolar numerical control constant current source module. The effect is as follows: firstly, a microcontroller adjusts a pulse control signal sent by a differential amplification circuit so that a constant current source circuit sends currents with different intensities to a treatment head. Secondly, the adjusting mode of the micro-current stimulator is a digital adjusting mode, so that the service life and the output precision of the micro-current stimulator are improved.

Description

Micro-current stimulation instrument
Technical Field
The invention relates to a stimulator, in particular to a micro-current stimulator.
Background
A micro-current stimulator is a product which stimulates brain, hypothalamus and edge reticular structures by using low-intensity specific waveform current, regulates the excitability of the brain, and treats insomnia, anxiety or relieves symptoms.
Most of the stimulation instruments on the market at present use a current source plus a mechanical potentiometer for adjustment, that is, output voltage is adjusted by adjusting a resistance value, but the current microcurrent stimulation instrument needs to be improved because the voltage precision requirement of the microcurrent stimulation instrument is high, the adjustment precision of the mechanical potentiometer is low, and the problem of low adjustment precision and short service life exists in a mode of controlling the output voltage of the current source through the mechanical potentiometer.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the micro-current stimulator which has the advantages of prolonging the service life of the micro-current stimulator and improving the output precision.
The technical purpose of the invention is realized by the following technical scheme: a microcurrent stimulator comprising: the device comprises a key module, a real-time clock module, a display module, a Bluetooth module for receiving a control instruction sent by a mobile terminal, a microcontroller for converting the control instruction into a control signal and sending the control signal to a bipolar numerical control constant current source module, the bipolar numerical control constant current source module for correspondingly controlling a treatment head according to the control signal, and the treatment head;
the key module, the real-time clock module, the display module and the Bluetooth module are respectively connected with the microcontroller; the microcontroller is connected with the treatment head through the bipolar numerical control constant current source module.
Optionally, the bipolar digitally controlled constant current source module includes: a reference voltage circuit, a differential amplification circuit and a constant current source circuit; the reference voltage circuit is connected with the constant current source circuit through the differential amplification circuit; the differential amplification circuit is connected with the microcontroller; the constant current source circuit is connected with the treatment head.
Optionally, the reference voltage circuit includes: the circuit comprises a diode, a first operational amplifier, a first resistor, a second resistor and a third resistor;
the cathode of the diode is connected with a first power supply voltage end through a first resistor, and the anode of the diode is grounded; the first input end of the first operational amplifier is connected with the cathode of the diode through a second resistor, and the first input end of the first operational amplifier is grounded through a third resistor; the second input end of the first operational amplifier is connected with the output end of the first operational amplifier; the output end of the first operational amplifier is connected with a differential amplification circuit; the positive power supply end of the first operational amplifier is connected with a first power supply voltage end, and the negative power supply end of the first operational amplifier is connected with a second power supply voltage end.
Optionally, the diode is a zener diode.
Optionally, the differential amplifier circuit includes: the fourth resistor, the fifth resistor, the sixth resistor, the seventh resistor and the second operational amplifier;
the first input end of the second operational amplifier is connected with the microcontroller through a fifth resistor, and the first input end of the second operational amplifier is also grounded through a fourth resistor; a second input end of the second operational amplifier is connected with the reference voltage circuit through a sixth resistor, and is also connected with an output end of the second operational amplifier through a seventh resistor; the output end of the second operational amplifier is connected with a constant current source circuit; and the positive power supply end of the second operational amplifier is connected with the first power supply voltage end, and the negative power supply end of the second operational amplifier is connected with the second power supply voltage end.
Optionally, the constant current source circuit includes: the circuit comprises a third operational amplifier, a fourth operational amplifier, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor and a twelfth resistor;
the first input end of the third operational amplifier is grounded through a ninth resistor, and is also connected with the output end of a fourth operational amplifier through a tenth resistor; the second input end of the third operational amplifier is connected with the differential amplification circuit through an eighth resistor, and is also connected with the output end of the third operational amplifier through an eleventh resistor; the output end of the third operational amplifier is connected with the treatment head through a twelfth resistor, and the output end of the third operational amplifier is also connected with the first input end of a fourth operational amplifier through a twelfth resistor; a second input end of the fourth operational amplifier is connected with an output end of the fourth operational amplifier;
the positive power supply end of the third operational amplifier is connected with the first power supply voltage end, and the negative power supply end of the third operational amplifier is connected with the second power supply voltage end; and the positive power supply end of the fourth operational amplifier is connected with the first power supply voltage end, and the negative power supply end of the fourth operational amplifier is connected with the second power supply voltage end.
In conclusion, the invention has the following beneficial effects:
firstly, a microcontroller adjusts a pulse control signal sent by a differential amplification circuit so that a constant current source circuit sends current after adjusting an output waveform to a treatment head, the treatment head is in contact with a human body, the human body is grounded, and the current with different intensities can flow through the human body at the same time.
Secondly, the adjustment mode of this application is digital adjustment's mode, has reduced the electric energy consumption that mechanical potentiometer partial pressure brought, has improved the life and the output precision of little current stimulation appearance.
Drawings
FIG. 1 is a schematic diagram of a framework of the micro-current stimulator in this embodiment;
fig. 2 is a circuit schematic diagram of the bipolar digitally controlled constant current source module in the present embodiment.
In the figure: 1. a key module; 2. a real-time clock module; 3. a display module; 4. a mobile terminal; 5. a Bluetooth module; 6. a microcontroller; 7. a bipolar numerical control constant current source module; 71. a reference voltage circuit; 72. a differential amplifier circuit; 73. a constant current source circuit; 8. a treatment head; r1, a first resistor; r2, a second resistor; r3, third resistor; r4, fourth resistor; r5, fifth resistor; r6, sixth resistor; r7, seventh resistor; r8, eighth resistor; r9, ninth resistor; r10, tenth resistor; r11, eleventh resistor; r12, twelfth resistor; u1, a first operational amplifier; u2, a second operational amplifier; u3, third operational amplifier; u4, a fourth operational amplifier.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
The present application provides a micro-current stimulator, as shown in fig. 1, comprising: the device comprises a key module 1, a real-time clock module 2, a display module 3, a Bluetooth module 5 for receiving a control instruction sent by a mobile terminal 4, a microcontroller 6 for converting the control instruction into a control signal and sending the control signal to a bipolar numerical control constant current source module 7, the bipolar numerical control constant current source module 7 for correspondingly controlling a treatment head 8 according to the control signal, and the treatment head 8; the key module 1, the real-time clock module 2, the display module 3 and the Bluetooth module 5 are respectively connected with a microcontroller 6; the microcontroller 6 is connected with the treatment head 8 through the bipolar numerical control constant current source module 7.
The Bluetooth module 5 is used for receiving a control instruction sent by the mobile terminal 4, converting the control instruction into a control signal through the microcontroller 6 and sending the control signal to the bipolar numerical control constant current source module 7, and then the bipolar numerical control constant current source module 7 correspondingly controls the therapy head 8 according to the control signal, and after a human body contacts the therapy head 8, the therapy head 8 is grounded through the human body, so that the therapy head 8 can act on the human body. In addition, the key module 1 can also send a control instruction, the control instruction sent by the key module 1 is converted into a control signal through the microcontroller 6 and sent to the bipolar numerical control constant current source module 7, and then the bipolar numerical control constant current source module 7 correspondingly controls the treatment head 8 according to the control signal. In practical applications, the microcontroller 6 may be an integrated circuit of the type STM32F103RCT6 microcontroller.
In an alternative embodiment, the bipolar digitally controlled constant current source module 7 comprises: a reference voltage circuit 71, a differential amplification circuit 72, and a constant current source circuit 73; the reference voltage circuit 71 is connected with a constant current source circuit 73 through a differential amplification circuit 72; the differential amplifying circuit 72 is connected with the microcontroller 6; the constant current source circuit 73 is connected with the treatment head 8.
In an alternative embodiment, the reference voltage circuit 71 includes: the circuit comprises a diode, a first operational amplifier U1, a first resistor R1, a second resistor R2 and a third resistor R3.
The cathode of the diode is connected to the first supply voltage terminal via a first resistor R1, and the anode of the diode is connected to ground. The first input end of the first operational amplifier U1 is connected with the cathode of the diode through a second resistor R2, and the first input end of the first operational amplifier U1 is also connected with the ground through a third resistor R3; a second input of the first operational amplifier U1 is connected to the output of the first operational amplifier U1. The output end of the first operational amplifier U1 is connected with the differential amplification circuit 72; the positive power supply end of the first operational amplifier U1 is connected to the first power supply voltage end, and in actual application, the voltage of the first power supply voltage end may be 12V, and the negative power supply end of the first operational amplifier U1 is connected to the second power supply voltage end, and in actual application, the voltage of the second power supply voltage end may be-12V. The voltage of the first power supply voltage terminal is adjusted and amplified by the first operational amplifier U1.
In an alternative embodiment, the differential amplifying circuit 72 includes: a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7 and a second operational amplifier U2.
The first input of the second operational amplifier U2 is connected to the microcontroller 6 via a fifth resistor R5, and the first input of the second operational amplifier U2 is also connected to ground via a fourth resistor R4. The second input terminal of the second operational amplifier U2 is connected to the reference voltage circuit 71 through a sixth resistor R6, and the second input terminal of the second operational amplifier U2 is further connected to the output terminal of the second operational amplifier U2 through a seventh resistor R7. The output terminal of the second operational amplifier U2 is connected to the constant current source circuit 73. The positive power supply end of the second operational amplifier U2 is connected with the first power supply voltage end, and the negative power supply end of the second operational amplifier U2 is connected with the second power supply voltage end.
In an alternative embodiment, the constant current source circuit 73 includes: a third operational amplifier U3, a fourth operational amplifier U4, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, and a twelfth resistor R12;
the first input end of the third operational amplifier U3 is grounded through a ninth resistor R9, and the first input end of the third operational amplifier U3 is also connected with the output end of the fourth operational amplifier U4 through a tenth resistor R10; a second input terminal of the third operational amplifier U3 is connected to the differential amplifier circuit 72 through an eighth resistor R8, and a second input terminal of the third operational amplifier U3 is further connected to an output terminal of the third operational amplifier U3 through an eleventh resistor R11; the output end of the third operational amplifier U3 is connected with the therapy head 8 through a twelfth resistor R12, the therapy head 8 is in contact with the human body, the human body is grounded, and the output end of the third operational amplifier U3 is also connected with the first input end of a fourth operational amplifier U4 through a twelfth resistor R12; a second input of the fourth operational amplifier U4 is connected to an output of the fourth operational amplifier U4.
The positive power supply end of the third operational amplifier U3 is connected with a first power supply voltage end, the voltage of the first power supply voltage end is positive 12V, the negative power supply end of the third operational amplifier U3 is connected with a second power supply voltage end, and the voltage of the second power supply voltage end is negative 12V; the positive power supply end of the fourth operational amplifier U4 is connected with the first power supply voltage end, and the negative power supply end of the fourth operational amplifier U4 is connected with the second power supply voltage end.
The microcontroller 6 adjusts the pulse control signal sent by the differential amplifying circuit 72 to make the constant current source circuit 73 send the current with the adjusted output waveform to the therapy head 8, and the therapy head 8 contacts with the human body, the human body is grounded, and the current with the adjusted output waveform output by the therapy head 8 is applied to the human body. When the condition of R8 × R11 × R9 × R10 is satisfied, the relationship between the output voltage V of the third operational amplifier U3 and the current I of the human body resistor satisfies I (-R1/R8) (V/R12), that is, the output current I is independent of the human body resistor Rh, and the current output by the therapy head 8 of the present application after the output waveform is adjusted is stable and controllable.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims (6)

1. A microcurrent stimulator, comprising: the device comprises a key module, a real-time clock module, a display module, a Bluetooth module for receiving a control instruction sent by a mobile terminal, a microcontroller for converting the control instruction into a control signal and sending the control signal to a bipolar numerical control constant current source module, the bipolar numerical control constant current source module for correspondingly controlling a treatment head according to the control signal, and the treatment head;
the key module, the real-time clock module, the display module and the Bluetooth module are respectively connected with the microcontroller; the microcontroller is connected with the treatment head through the bipolar numerical control constant current source module.
2. The micro current stimulator of claim 1, wherein the bipolar digitally controlled constant current source module comprises: a reference voltage circuit, a differential amplification circuit and a constant current source circuit; the reference voltage circuit is connected with the constant current source circuit through the differential amplification circuit; the differential amplification circuit is connected with the microcontroller; the constant current source circuit is connected with the treatment head.
3. The microcurrent stimulator of claim 2, wherein the reference voltage circuit comprises: the circuit comprises a diode, a first operational amplifier, a first resistor, a second resistor and a third resistor;
the cathode of the diode is connected with a first power supply voltage end through a first resistor, and the anode of the diode is grounded; the first input end of the first operational amplifier is connected with the cathode of the diode through a second resistor, and the first input end of the first operational amplifier is grounded through a third resistor; the second input end of the first operational amplifier is connected with the output end of the first operational amplifier; the output end of the first operational amplifier is connected with a differential amplification circuit; the positive power supply end of the first operational amplifier is connected with a first power supply voltage end, and the negative power supply end of the first operational amplifier is connected with a second power supply voltage end.
4. The micro-current stimulator of claim 3, wherein the diode is a zener diode.
5. The microcurrent stimulator of claim 2, wherein the differential amplifier circuit comprises: the fourth resistor, the fifth resistor, the sixth resistor, the seventh resistor and the second operational amplifier;
the first input end of the second operational amplifier is connected with the microcontroller through a fifth resistor, and the first input end of the second operational amplifier is also grounded through a fourth resistor; a second input end of the second operational amplifier is connected with the reference voltage circuit through a sixth resistor, and is also connected with an output end of the second operational amplifier through a seventh resistor; the output end of the second operational amplifier is connected with a constant current source circuit; and the positive power supply end of the second operational amplifier is connected with the first power supply voltage end, and the negative power supply end of the second operational amplifier is connected with the second power supply voltage end.
6. The micro-current stimulator of claim 2, wherein the constant current source circuit comprises: the circuit comprises a third operational amplifier, a fourth operational amplifier, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor and a twelfth resistor;
the first input end of the third operational amplifier is grounded through a ninth resistor, and is also connected with the output end of a fourth operational amplifier through a tenth resistor; the second input end of the third operational amplifier is connected with the differential amplification circuit through an eighth resistor, and is also connected with the output end of the third operational amplifier through an eleventh resistor; the output end of the third operational amplifier is connected with the treatment head through a twelfth resistor, and the output end of the third operational amplifier is also connected with the first input end of a fourth operational amplifier through a twelfth resistor; a second input end of the fourth operational amplifier is connected with an output end of the fourth operational amplifier;
the positive power supply end of the third operational amplifier is connected with the first power supply voltage end, and the negative power supply end of the third operational amplifier is connected with the second power supply voltage end; and the positive power supply end of the fourth operational amplifier is connected with the first power supply voltage end, and the negative power supply end of the fourth operational amplifier is connected with the second power supply voltage end.
CN202010606901.0A 2020-06-29 2020-06-29 Micro-current stimulation instrument Pending CN111632265A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010606901.0A CN111632265A (en) 2020-06-29 2020-06-29 Micro-current stimulation instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010606901.0A CN111632265A (en) 2020-06-29 2020-06-29 Micro-current stimulation instrument

Publications (1)

Publication Number Publication Date
CN111632265A true CN111632265A (en) 2020-09-08

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Application Number Title Priority Date Filing Date
CN202010606901.0A Pending CN111632265A (en) 2020-06-29 2020-06-29 Micro-current stimulation instrument

Country Status (1)

Country Link
CN (1) CN111632265A (en)

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