CN111135457A - Electric acupuncture treatment system - Google Patents
Electric acupuncture treatment system Download PDFInfo
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- CN111135457A CN111135457A CN202010027262.2A CN202010027262A CN111135457A CN 111135457 A CN111135457 A CN 111135457A CN 202010027262 A CN202010027262 A CN 202010027262A CN 111135457 A CN111135457 A CN 111135457A
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- 238000001467 acupuncture Methods 0.000 title claims abstract description 11
- 230000003750 conditioning effect Effects 0.000 claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 230000003321 amplification Effects 0.000 claims abstract description 8
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 8
- 230000001276 controlling effect Effects 0.000 claims abstract description 7
- 230000001105 regulatory effect Effects 0.000 claims abstract description 7
- 239000003990 capacitor Substances 0.000 claims description 14
- 230000033228 biological regulation Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 6
- 238000004804 winding Methods 0.000 description 3
- 101710129178 Outer plastidial membrane protein porin Proteins 0.000 description 2
- 102100037820 Voltage-dependent anion-selective channel protein 1 Human genes 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000554 physical therapy Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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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
- A61N1/18—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
- A61N1/36017—External stimulators, e.g. with patch electrodes with leads or electrodes penetrating the skin
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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
- A61N1/18—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
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biophysics (AREA)
- Heart & Thoracic Surgery (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)
- Electrotherapy Devices (AREA)
Abstract
The invention discloses an electric acupuncture treatment system, relates to the field of medical instruments, and can flexibly control output current and realize the functions of frequency modulation, amplitude modulation, carrier frequency control, duty ratio control and pulse polarity control. The invention comprises the following steps: the power supply is respectively connected with the controller and the power amplification circuit, the controller, the power amplification circuit and the output circuit are sequentially connected, and the electric needle is connected with the output end of the output circuit. The power amplifying circuit comprises a carrier conditioning circuit and a power amplifier power supply regulating and controlling circuit. The carrier conditioning circuit comprises a four-channel two-input NAND gate. The power amplifier power supply regulating and controlling circuit comprises a voltage drop converter and an operational amplifier, wherein a feedback voltage pin of the voltage drop converter is connected with a digital-to-analog conversion interface of the controller, and the digital-to-analog conversion interface of the controller is also connected with the input end of the operational amplifier. The output end of the power amplifying circuit is connected with the input end of the output circuit, and the input end of the output circuit is connected with the electric needle. The invention has simple and reliable structure, flexible and rich adjustment parameters and is convenient to provide various treatment schemes.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to an electric acupuncture treatment system.
Background
Traditional electric acupuncture appearance or other low frequency physiotherapy equipment adopt fixed power amplifier power or series connection potentiometre power amplifier voltage to adjust, can't accomplish the dynamic fluctuation of signal modulation wave form, and uncontrolled system adjusts, and the output precision is poor.
In the output process, the amplitude of the output signal cannot be detected, and for some applications requiring constant current output, constant current output cannot be realized if a detection link is lacked.
Moreover, the output end of the traditional electric acupuncture apparatus, namely the electric acupuncture is directly connected to the human body without isolation, and when a system is charged, a charging part is damaged, or a power adapter is broken down, great potential safety hazards exist.
Disclosure of Invention
The invention provides an electric acupuncture treatment system which can flexibly control output current and realize the functions of frequency modulation, amplitude modulation and control of carrier frequency, duty ratio and pulse polarity.
In order to achieve the purpose, the invention adopts the following technical scheme:
an electro-acupuncture treatment system comprising: power, controller, power amplifier circuit, output circuit, electric needle. The power supply is respectively connected with the controller and the power amplification circuit, the controller, the power amplification circuit and the output circuit are sequentially connected, and the electric needle is connected with the output end of the output circuit.
The power amplifying circuit comprises a carrier conditioning circuit and a power amplifier power supply regulating and controlling circuit. The carrier conditioning circuit comprises a four-channel two-input NAND gate, a pulse width modulation signal output by the controller is connected to the input end of the four-channel two-input NAND gate, and the output end of the four-channel two-input NAND gate is connected with the output circuit.
The power amplifier power supply regulating and controlling circuit comprises a voltage drop converter and an operational amplifier, wherein a feedback voltage pin of the voltage drop converter is connected with a digital-to-analog conversion interface of the controller, and the digital-to-analog conversion interface of the controller is also connected with the input end of the operational amplifier. The output voltage end of the voltage drop converter, the feedback voltage pin of the voltage drop converter and the output end of the operational amplifier are sequentially connected with a voltage drop resistor.
The output end of the power amplifying circuit is connected with the input end of the output circuit, and the input end of the output circuit is connected with the electric needle.
Furthermore, the output circuit comprises a boosting transformer and a jumper wire interface, the reference voltage is connected into a primary coil of the boosting transformer, the connection position is variable, two ends of the primary coil are respectively connected with bases of two triodes, emitting electrodes of the triodes are connected with two ends of the primary coil through capacitors, and the emitting electrodes of the triodes are respectively connected with output ends of a four-channel two-input NAND gate. The output end of the four-channel two-input NAND gate is connected with the primary winding through a triode and then is connected to the primary control end (two ends) of the boosting transformer and used for controlling the power amplifier to be turned on and turned off.
The secondary coil of the step-up transformer is connected with a jumper wire interface, and the output end of the jumper wire interface is connected with an electric pin
Further, the power supply is 18V alternating current.
Further, the power supply is a direct current power supply.
Further, the controller is an ST company STM32F103RCT6 microcontroller.
The invention has the beneficial effects that:
the invention adopts the logic circuit and the controller to work together, can flexibly control various parameters of the output current, control the amplitude modulation and the frequency modulation of the output waveform, and output the frequency, the duty ratio and the pulse polarity of the carrier (pulse); the amplitude control of the output current is realized by changing the reference voltage of the power supply end of the step-up transformer; the frequency control of the output pulse is realized by changing the triode connected to the primary winding of the transformer.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a system configuration of an embodiment;
FIG. 2 is a circuit diagram of a carrier conditioning circuit;
FIG. 3 is a timing diagram generated by the carrier conditioning circuit;
FIG. 4 is a circuit diagram of a power amplifier power supply regulation circuit;
fig. 5 is a circuit diagram of an output circuit.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention, the present invention will be further described in detail with reference to the following detailed description.
An embodiment of the present invention provides an electrical acupuncture treatment system, as shown in fig. 1, including: power, controller, power amplifier circuit, output circuit, electric needle. The power supply is respectively connected with the controller and the power amplifying circuit and supplies power to the controller and the power amplifying circuit. The controller, the power amplifying circuit and the output circuit are sequentially connected, and the electric needle is connected to the output end of the output circuit.
The power supply adopts a direct current power supply or 18V alternating current. The direct current power supply can be obtained by connecting a power adapter to 220V mains supply.
The power amplifying circuit comprises a carrier conditioning circuit and a power amplifier power supply regulating and controlling circuit. The carrier conditioning circuit is shown in fig. 2. The ports PULCH1N and PULCH1P are connected to the PWM output pins of the controller timer. The controller adopts STM32F103RCT6 microcontroller or other compatible model. The ports of PULCH1N and PULCH1P are connected with the input ends of a four-channel two-input NAND gate 74HC00D, PULCH1N is connected with the 1 and 2 ends of 74HC00D, and PULCH1P is connected with the 4 and 5 ends of 74HC 00D. The pin 8 and pin 9 connections of 74HC00D are connected to the base of transistors T1 and T2, respectively. The two signals are used as switching signals at two ends of two windings of the primary side of the transformer, when base pulses are output, or two ends of the primary side of the transformer are alternately opened, two induced currents with opposite directions are formed, and therefore the secondary side of the transformer is triggered to generate corresponding boosted output currents.
PULCH1N, R1, C1 and GND are connected in sequence; PULCH1P, R2, C2 and GND are connected in sequence. The voltage at the junction of R1 and C1 and at the junction of R2 and C2 was 3.3V.
The controller outputs a pulse width modulated signal through the carrier conditioning circuit, resulting in a timing diagram as shown in fig. 3. Because the conditioning signal output by the driving transformer is sent by a PWM pin of a timer in the controller, the frequency and the pulse width of the positive and negative effective levels of the conditioning signal can be configured arbitrarily by the controller, so that the timing sequence can be changed to realize the adjustability of the pulse width of any frequency of the output pulse, and the positive and negative effective pulse widths are alternately output in a period without mutual influence. The frequency modulation, the control of any duty ratio and the pulse polarity are realized.
As shown in FIG. 4, the power amplifier power supply regulating circuit is characterized in that a chip U9 adopts a voltage-reducing converter TPS54332DDAR, a VIN pin of U9 is connected with 9V voltage, and an SS pin is connected with GND through a capacitor C34. Capacitors C30 and C31 are connected between VIN and SS in parallel, and the capacitors are connected in parallel to improve the capacity. VIN, R36, R42 and GND are connected in sequence, 9V voltage is connected at the joint of R36 and VIN, an EN pin of U9 is connected at the joint of R36 and R42, and R36 and R42 are voltage dividing resistors. The COMP pin of U9, C32, R43 and GND are connected in sequence; COMP, C33 and GND are connected in sequence. C32 and R43 form a resonant circuit, and C33 and C34 are filter capacitors.
The ROOT pin of U9 is connected to output end VPOWER by coil L3, and capacitor C28 is connected between the ROOT pin and PH pin of U9 for isolating DC signal. The GND pin of U9 is grounded, and capacitors C26 and C27 are connected in parallel between VPOWER and the GND pin for filtering. The junction of L3 and VPOWER is connected to the cathode of diode Z1, and the GND pin is connected to the anode of Z1.
VPOWER is also connected with R41, R44, C39 and GND in sequence. R41, R44 are voltage dividing resistors, C39 is a filter capacitor, and the VSNS pin of U9 is connected between R41 and R44. The junction of R44 and C39 is connected with a double operational amplifier U2A through R47, and the chip model of U2A is LM 358. R47 is connected with pin No. 1 of U2A. The No. 4 pin of the U2A is connected with a-5V voltage, the No. 8 pin is connected with a 5V voltage, the No. 2 pin is connected with a digital-to-analog conversion pin of the controller through a resistor R45, the No. 2 pin is also connected with the connection part of the R44 and the C39 through a resistor R40, and the R40 is used for being matched with the R45 to form a proportional amplification circuit of the operational amplifier chip U2, so that the output voltage of the digital-to-analog conversion pin of the controller and the output voltage of the VPOWER keep a stable proportional relation.
the-5V voltage is also connected to GND through a capacitor C35, and the 5V voltage is connected to the connection point of C39 and GND through a capacitor C40. The 5V voltage is connected with a No. 2 pin of a controllable precise voltage-stabilizing source D5 through a resistor R46, and the model of D5 is TL 431. Pin 3 of TL431 is connected to ground and pin 1 is connected to the other end of R48. And the other end of the capacitor C42 is also connected between the R48 and the pin No. 1, and the other end of the capacitor C42 is grounded.
A feedback voltage pin, namely a No. 5 pin, of the power chip U9 is controlled by a controller, and through an arithmetic circuit formed by the U2, a digital-to-analog conversion output voltage VDAC of the controller and VSENS of the U9 form a proportional relation, and finally the U9 output voltage VPOWER and a microcontroller DAC form the following relation: VPOWER = 2 × VDAC.
Therefore, the output power supply voltage can be flexibly controlled through the controller, and the output intensity is controlled.
The modulation wave of the output waveform determines the amplitude control mode of the waveform, the power supply terminal voltage of the primary side of the transformer determines the amplitude of the output waveform, and the power supply terminal voltage of the primary side of the transformer is controlled by the output signal of the digital-to-analog conversion interface on the controller, so that the output signal with adjustable arbitrary amplitude can be output, and the amplitude modulation function can be realized.
The output circuit is shown in fig. 5 and comprises transistors T1, T2, a step-up transformer TR1 and JP 4. The output end of 74HC00D is a PULDRIP1 pin and a PULDRIN1 pin, which are respectively connected with the emitters of T1 and T2.
Bases of T1 and T2 are respectively connected with two ends of a primary coil of TR1 through capacitors C17 and C18, a VPOWER end in a power amplifier power supply regulation and control circuit is connected with the primary coil, and the connection position is adjustable. The secondary coil of the TR1 is connected in parallel with JP4 and JP4 and is also connected in parallel with a resistor R39, and one end of the secondary coil, namely the position of 4, is connected with 3 and 4 pins of the resistor R38 and the JP 4.
JP4 is an output interface for connecting an output electrode cable, and the output end of JP4 is connected with an electric needle. The output current adopts an induction mode, and an output loop is isolated from a system circuit through the secondary output of the transformer TR1, so that a human body and the system circuit are isolated, and a certain protection effect is achieved.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. An electro-acupuncture treatment system, comprising: the power supply, the controller, the power amplification circuit, the output circuit and the electric needle;
the power supply is respectively connected with the controller and the power amplifying circuit, the controller, the power amplifying circuit and the output circuit are sequentially connected, and the electric needle is connected with the output end of the output circuit;
the power amplification circuit comprises a carrier conditioning circuit and a power amplification power supply regulation and control circuit;
the carrier conditioning circuit comprises a four-channel two-input NAND gate, a pulse width modulation signal output by the controller is connected to the input ends of the four-channel two-input NAND gate, and the output end of the four-channel two-input NAND gate is connected with the output circuit;
the power amplifier power supply regulating and controlling circuit comprises a voltage drop converter and an operational amplifier, wherein a feedback voltage pin of the voltage drop converter is connected with a digital-to-analog conversion interface of the controller, and the digital-to-analog conversion interface of the controller is also connected with the input end of the operational amplifier;
the output voltage end of the voltage drop converter, the feedback voltage pin of the voltage drop converter and the output end of the operational amplifier are sequentially connected with a voltage drop resistor at intervals;
the output end of the power amplifying circuit is connected with the input end of the output circuit, and the input end of the output circuit is connected with the electric needle.
2. The system of claim 1, wherein the output circuit comprises a step-up transformer and a jumper interface, the reference voltage is connected to a primary coil of the step-up transformer, the connection position is variable, two ends of the primary coil are respectively connected to bases of two triodes, emitters of the triodes are connected to two ends of the primary coil through capacitors, and the emitters of the triodes are connected to output ends of the four-channel two-input nand gate;
and the secondary coil of the boosting transformer is connected with a jumper wire interface, and the output end of the jumper wire interface is connected with the electric needle.
3. The system of claim 1, wherein the power source is 18V ac.
4. The system of claim 1, wherein the power source is a dc power source.
5. The system of claim 1, wherein the controller is an ST STM32F103RCT6 microcontroller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010027262.2A CN111135457A (en) | 2020-01-10 | 2020-01-10 | Electric acupuncture treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010027262.2A CN111135457A (en) | 2020-01-10 | 2020-01-10 | Electric acupuncture treatment system |
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| Publication Number | Publication Date |
|---|---|
| CN111135457A true CN111135457A (en) | 2020-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010027262.2A Pending CN111135457A (en) | 2020-01-10 | 2020-01-10 | Electric acupuncture treatment system |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6304473B1 (en) * | 2000-06-02 | 2001-10-16 | Iwatt | Operating a power converter at optimal efficiency |
| CN101389177A (en) * | 2007-09-14 | 2009-03-18 | 群康科技(深圳)有限公司 | Light regulating circuit |
| CN202309521U (en) * | 2011-09-23 | 2012-07-04 | 东南大学 | Control circuit for single-inductance dual-output switching power supply |
| CN104460933A (en) * | 2014-12-19 | 2015-03-25 | 芜湖国睿兆伏电子有限公司 | Protection circuit for control over digital power source |
| CN205683402U (en) * | 2016-04-27 | 2016-11-16 | 王恒伟 | A kind of potential therapeutic instrument with output electric current electrical measurement function |
| KR20180057600A (en) * | 2018-05-23 | 2018-05-30 | 페어차일드코리아반도체 주식회사 | Led emitting device and driving method thereof |
-
2020
- 2020-01-10 CN CN202010027262.2A patent/CN111135457A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6304473B1 (en) * | 2000-06-02 | 2001-10-16 | Iwatt | Operating a power converter at optimal efficiency |
| CN101389177A (en) * | 2007-09-14 | 2009-03-18 | 群康科技(深圳)有限公司 | Light regulating circuit |
| CN202309521U (en) * | 2011-09-23 | 2012-07-04 | 东南大学 | Control circuit for single-inductance dual-output switching power supply |
| CN104460933A (en) * | 2014-12-19 | 2015-03-25 | 芜湖国睿兆伏电子有限公司 | Protection circuit for control over digital power source |
| CN205683402U (en) * | 2016-04-27 | 2016-11-16 | 王恒伟 | A kind of potential therapeutic instrument with output electric current electrical measurement function |
| KR20180057600A (en) * | 2018-05-23 | 2018-05-30 | 페어차일드코리아반도체 주식회사 | Led emitting device and driving method thereof |
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