CN107693942B - Medical low-frequency electric pulse therapeutic instrument - Google Patents
Medical low-frequency electric pulse therapeutic instrument Download PDFInfo
- Publication number
- CN107693942B CN107693942B CN201710937448.XA CN201710937448A CN107693942B CN 107693942 B CN107693942 B CN 107693942B CN 201710937448 A CN201710937448 A CN 201710937448A CN 107693942 B CN107693942 B CN 107693942B
- Authority
- CN
- China
- Prior art keywords
- resistor
- triode
- voltage
- circuit
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000001225 therapeutic effect Effects 0.000 title claims abstract description 15
- 239000003990 capacitor Substances 0.000 claims description 36
- 101150037899 REL1 gene Proteins 0.000 claims description 27
- 101100099158 Xenopus laevis rela gene Proteins 0.000 claims description 27
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 230000005669 field effect Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000002457 bidirectional effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001827 electrotherapy Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- 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 a medical low-frequency electric pulse therapeutic apparatus, which comprises a power supply module, a high-voltage generating circuit for generating high voltage, a pulse output circuit for generating pulse waveforms and a system controller, wherein the power supply module is used for generating high voltage; the control signal output end of the system controller is respectively connected with the control signal input end of the high-voltage generating circuit and the control signal input end of the pulse output circuit; the high-voltage output end of the high-voltage generating circuit is connected with the high-voltage power supply end of the pulse output circuit; the power supply module supplies power to the high-voltage generating circuit, the pulse output circuit and the system controller respectively. The medical low-frequency electric pulse therapeutic apparatus adopts the system controller to control the voltage value of the high-voltage generating circuit and the pulse characteristic of the pulse output circuit, thereby meeting the use safety of users and the self-regulation of the pulse characteristic according to the self needs of the users and enhancing the use comfort.
Description
Technical Field
The invention relates to a therapeutic apparatus, in particular to a medical low-frequency electric pulse therapeutic apparatus.
Background
At present, along with the improvement of the living standard of people, more and more people begin to pay attention to health, and the medical low-frequency electric pulse therapeutic apparatus can provide quick and effective family care for people and is favored by more and more families. However, the existing low-frequency electric pulse therapeutic apparatus still has more problems, for example: (1) The battery voltage is directly used as a system power supply, the battery directly supplies power to the system without voltage stabilization, so that high voltage is unstable, and the output amplitude of the system is gradually attenuated along with the loss of the electric quantity of the battery; (2) The linear modulation of output voltage cannot be achieved, the prior art adopts a transformer mode to BOOST, because the boosting ratio of the transformer is fixed, the point is connected in series with the output end for adjusting the output intensity, the digital control of the output intensity cannot be achieved, the circuit cost is high, the volume is large, the miniaturization and portability of equipment cannot be achieved, even if a BOOST mode is adopted, a plurality of fixed frequency or pulse width combinations are adopted as the driving of a BOOST circuit, no current feedback exists, the boosting process is uncontrollable, the amplitude modulation cannot be carried out on the output waveform in application, the requirement of changing waveform maintenance stimulus of electrotherapy products cannot be met, the combination of treatment prescriptions applicable to different diseases cannot be made, and the user experience is poor; (3) In the output process, the amplitude of the output signal cannot be detected, and the output signal cannot be realized for some applications requiring constant current output; (4) The application part is directly connected to the human body without isolation, and when the system is charged, if the charging part is damaged, such as breakdown of a power adapter, the system has a great potential safety hazard. Therefore, it is necessary to design a medical low-frequency electric pulse therapeutic apparatus which has high safety performance and can be adjusted by the user according to the needs.
Disclosure of Invention
The invention aims at: the medical low-frequency electric pulse therapeutic apparatus has high safety performance and can be adjusted according to the needs of users.
In order to achieve the aim of the invention, the invention discloses a medical low-frequency electric pulse therapeutic apparatus, which comprises a power supply module, a high-voltage generating circuit for generating high voltage, a pulse output circuit for generating pulse waveforms and a system controller; the control signal output end of the system controller is respectively connected with the control signal input end of the high-voltage generating circuit and the control signal input end of the pulse output circuit; the high-voltage output end of the high-voltage generating circuit is connected with the high-voltage power supply end of the pulse output circuit; the power supply module supplies power to the high-voltage generating circuit, the pulse output circuit and the system controller respectively.
The system controller is respectively connected with the high-voltage generating circuit and the pulse output circuit, so that the voltage value of the high-voltage generating circuit and the pulse characteristic of the pulse output circuit can be effectively controlled, the use safety of a user is met, the pulse characteristic is automatically regulated by the user according to the self requirement, and the use comfort is enhanced.
As a further limiting aspect of the present invention, the pulse output circuit includes a resistor R3, a resistor R7, a resistor R11, a resistor R15, a resistor R16, a resistor R17, a resistor R20, a resistor R21, a resistor R23, a resistor R27, a resistor R29, a resistor R31, a resistor R60, a transistor T1, a transistor T3, a transistor T5, a transistor T6, a transistor T8, a transistor T9, a transistor T11, a diode D15, a capacitor C24, a double pole double throw relay REL1, an output electrode out_n1, and an output electrode out_p1; one end of a resistor R15 is used as a first path of control signal input end of the pulse output circuit and is connected with a first path of control signal output end of the system controller, and one end of the resistor R27 is used as a second path of control signal input end of the pulse output circuit and is connected with a second path of control signal output end of the system controller; the other end of the resistor R15 is connected with the base electrode of the triode T5 and one end of the resistor R17, and the other end of the resistor R27 is connected with the base electrode of the triode T9 and one end of the resistor R31; the other end of the resistor R17 is connected with the emitter of the triode T5 and then grounded, and the other end of the resistor R31 is connected with the emitter of the triode T9 and then grounded; the collector of the triode T5 is connected with one end of a resistor R7 and one end of a resistor R29, and the collector of the triode T9 is connected with one end of a resistor R23 and one end of a resistor R11; the other end of the resistor R7 is respectively connected with one end of the resistor R3 and the base electrode of the triode T1, and the other end of the resistor R23 is respectively connected with one end of the resistor R20 and the base electrode of the triode T8; the other end of the resistor R3 and the emitter of the triode T1 are connected with a first path of high-voltage power supply end serving as a pulse output circuit and a high-voltage output end of a high-voltage generation circuit, and the other end of the resistor R20 and the emitter of the triode T8 are connected with a second path of high-voltage power supply end serving as the pulse output circuit and a high-voltage output end of the high-voltage generation circuit; the collector of the triode T1 is connected with the emitter of the triode T3 and one moving contact of the double-pole double-throw relay REL1, and a normally open contact corresponding to the moving contact of the double-pole double-throw relay REL1 is connected with the output electrode OUT_N1; the collector of the triode T8 is connected with the emitter of the triode T11 and the other moving contact of the double-pole double-throw relay REL1, and the normally closed contact corresponding to the moving contact of the double-pole double-throw relay REL1 is connected with the output electrode OUT_P1; the other end of the resistor R11 is connected with the base electrode of the triode T3, and the other end of the resistor R29 is connected with the base electrode of the triode T11; the collector of the triode T3 is respectively connected with one end of the capacitor C24, one end of the resistor R60 and the collector of the triode T11; the other end of the capacitor C24 is connected with the other end of the resistor R60 and then grounded; the coil anode of the double-pole double-throw relay REL1 is connected with the cathode of the diode D15 and a 5V power supply of the power supply module; the positive electrode of the diode D15 is connected with the negative electrode of the coil of the double-pole double-throw relay REL1 and the collector electrode of the triode T6; the base electrode of the triode T6 is respectively connected with one end of a resistor R16 and one end of a resistor R21; the other end of the resistor R21 is connected with the emitter of the triode T6 and then grounded; the other end of the resistor R16 is connected to a third path of control signal output end of the system controller.
One end of a resistor R15 and one end of the resistor R27 are used as a first path control signal input end LF_DRV_N and a second path control signal input end LF_DRV_P of a pulse output circuit to receive PWM signals controlled by a singlechip U4, and the PWM signals are control signals output by applying pulse waveforms, when LF_DRV_N is at a high level, a triode T5, a triode T1 and a triode T11 are conducted, and high-voltage signals are sent to an output electrode OUT_P1 from an output electrode OUT_N1 to the human body, so that negative application pulse currents are formed; similarly, when the LF_DRV_P is at a high level, the triode T9, the triode T3 and the triode T8 are conducted, a high-voltage signal passes through the output electrode OUT_P1 to the human body and then to the output electrode OUT_N1 to form forward application pulse current, and the singlechip U4 can realize unidirectional and bidirectional output, pulse width and frequency control of application current through control of the LF_DRV_N and LF_DRV_P signals, generate variable and combined output waveforms, and enrich the use experience of users. The positive electrode of the double-pole double-throw relay REL1 coil is VCC_5V, the negative electrode is connected with the collector electrode of the triode T6, when the application is stopped, the triode T6 is cut off, the double-pole double-throw relay REL1 coil is not conducted, the output of the double-pole double-throw relay REL1 is cut off, the protection of a user is realized, if the system is knocked down due to the failure of an external USB charger, the external network power supply is protected from being applied to a human body through the electrode, and the safety of the user is protected. The resistor R60 is adopted to connect the collector electrode of the triode T11 with the ground, and in the pulse output process, the sampled resistor R60 is used for collecting and outputting pulse voltage in real time, if the voltage is close to 0V, the surface output electrode and the human body do not form an effective loop, and the output is stopped, so that discomfort caused by the fact that the excessive pulse voltage is directly applied to the human body is prevented, and the safety of a user is protected; meanwhile, the current change of the output signal can be reflected in real time by the signal collected on the resistor R60, and constant current output can be realized by combining the boost control signal on software.
As a further limiting scheme of the invention, the high-voltage generating circuit comprises an operational amplifier U2, a capacitor C4, an inductor L1, a resistor R8, a capacitor C8, a triode T2, a diode D1, a capacitor C6 and a resistor R2; the inverting input end of the operational amplifier U2 is connected with a 5V power supply of the power supply module; the output end of the operational amplifier U2 is connected to the non-inverting input end in a feedback way and is connected with one end of the capacitor C4 and one end of the inductor L1; the other end of the capacitor C4 is grounded; the other end of the inductor L1 is respectively connected with the anode of the diode D1 and the collector of the triode T2; the base electrode of the triode T2 is respectively connected with one end of a resistor R8 and one end of a capacitor C8; the emitter of the triode T2 is grounded; the other end of the resistor R8 and the other end of the capacitor C8 are simultaneously connected with the fourth path of control signal output end of the system controller; the cathode of the diode D1 is respectively connected with one end of the capacitor C6 and one end of the resistor R2; the other end of the capacitor C6 is grounded; the other end of the resistor R2 is used as a high-voltage output end of the high-voltage generating circuit.
The system power supply VCC_5V is utilized to generate VBoost voltage through a voltage follower formed by the operational amplifier U2, so that the VBoost voltage is used as an input power supply of the high-voltage generator, and the system power supply and the high-voltage power supply are blocked by utilizing the characteristic of high input impedance of the operational amplifier, so that the weak current system is protected. The PWM signal HV_DRV of the singlechip U4 controls the on-off of the triode T2 through a specific frequency, and VBoost stores energy in the magnetic field of the inductor L1 through the frequency and duty ratio control of the HV_DRV; when the triode T2 is turned off, the current of the inductor L1 cannot be suddenly changed, the inductor L1 generates self-induced electromotive force to prevent the magnetic flux from falling, the self-induced electromotive force of the inductor L1 is positive and negative, and is just in the same direction as the power supply, and the voltage is overlapped, so that the purpose of boosting is achieved, and high voltage HV is generated.
As a further limiting scheme of the invention, the system controller comprises a singlechip U4, a display screen and control keys; the singlechip U4 is provided with at least four paths of control signal output ends; the display screen and the control keys are connected with the singlechip U4. And displaying the related parameters in real time by adopting a display screen, and setting the related parameters by a control key.
As a further limiting scheme of the invention, the power supply module comprises a battery, a power supply switch circuit, a 5V power supply output circuit and a charging management circuit; the power switch circuit is connected between the battery and the 5V power output circuit, and the battery provides power for the 5V power output circuit through the power switch circuit; the charging management circuit is connected with the battery and the system controller and is used for controlling the charging of the battery.
The beneficial effects of the invention are as follows: the system controller is respectively connected with the high-voltage generating circuit and the pulse output circuit, so that the voltage value of the high-voltage generating circuit and the pulse characteristic of the pulse output circuit can be effectively controlled, the use safety of a user is met, the pulse characteristic is automatically regulated by the user according to the self requirement, and the use comfort is enhanced.
Drawings
FIG. 1 is a schematic diagram of an overall circuit module according to the present invention;
FIG. 2 is a schematic diagram of a power switching circuit according to the present invention;
FIG. 3 is a schematic diagram of a 5V power supply output circuit according to the present invention;
FIG. 4 is a schematic diagram of a charge management circuit according to the present invention;
FIG. 5 is a schematic diagram of a pulse output circuit according to the present invention;
FIG. 6 is a schematic diagram of a high voltage generation circuit of the present invention;
fig. 7 is a schematic diagram of a U4 pin of the single chip microcomputer according to the present invention.
Detailed Description
As shown in fig. 1, the medical low-frequency electric pulse therapeutic apparatus disclosed by the invention comprises: the system comprises a power supply module, a high voltage generating circuit for generating high voltage, a pulse output circuit for generating pulse waveforms and a system controller; the control signal output end of the system controller is respectively connected with the control signal input end of the high-voltage generating circuit and the control signal input end of the pulse output circuit; the high-voltage output end of the high-voltage generating circuit is connected with the high-voltage power supply end of the pulse output circuit; the power supply module supplies power to the high-voltage generating circuit, the pulse output circuit and the system controller respectively.
As shown in fig. 2-4, the power module includes a battery, a power switching circuit, a 5V power output circuit, and a charge management circuit; the power switch circuit is connected between the battery and the 5V power output circuit, and the battery provides power for the 5V power output circuit through the power switch circuit; the charging management circuit is connected with the battery and the system controller and is used for controlling the charging of the battery.
The power switch circuit, the 5V power output circuit and the charge management circuit may be all conventional circuits IN the art, for example, the power switch circuit shown IN fig. 2 is connected to a 3.7V lithium battery through a terminal J1, a power switch is formed by a field effect transistor Q1, a diode D2 and a diode D3, a resistor R1 is connected to the gate of the field effect transistor Q1, and when the power button K1 is pressed, the source and the drain of the field effect transistor Q1 are turned on, and v_in is electrified. The collector of the triode T4 is connected with the grid of the field effect transistor Q1, the singlechip U4 sets the base level of the triode T4 to be high level after the system is electrified, and the grid of the field effect transistor Q1 is pulled down to keep V_IN conducting. The collector of the triode T10 is connected with the grid of the field effect transistor Q2, the singlechip U4 sets the base level of the triode T10 to be high level after the system is electrified, the grid of the field effect transistor Q2 is pulled down, the battery voltage signal BATT+ is conducted, and the intensity of the AD_BATVOL signal is detected to judge the current battery electric quantity.
The 5V power output circuit shown IN fig. 3 provides power to the system after v_in is powered up. At this time, the chip U1 works to boost the battery voltage of 3.7V to be stable VCC_5V for each subsystem. When the system is charged, the charging voltage V_IN_5V signal is high level and is connected to the base electrode of the triode T7 through the resistor R19, and the chip U1 stops working at the moment to protect the system power supply.
As shown in the charge management circuit of fig. 4, the zener diode Z2 and R59 are connected in series to form a voltage clamping circuit, when the charging power supply usb_5v_in is connected, if the charging power supply usb_5v_in is over-voltage, the zener diode Z2 breaks down, and the triode T15 is turned on; the collector of the triode T15 is pulled down and is connected to the base electrode of the triode T14 through the resistor R57, the collector of the triode T14 is connected with the resistor R55 and the grid electrode of the field effect transistor Q4, at the moment, the triode T14 is cut off, the grid electrode of the field effect transistor Q4 is pulled up, the field effect transistor Q4 is not conducted, VIN_5V is not electrified, and the effect of protecting a back-end circuit is achieved. When normal USB power is input, the chip U3 works to charge the battery.
As shown in fig. 5, the pulse output circuit includes a resistor R3, a resistor R7, a resistor R11, a resistor R15, a resistor R16, a resistor R17, a resistor R20, a resistor R21, a resistor R23, a resistor R27, a resistor R29, a resistor R31, a resistor R60, a transistor T1, a transistor T3, a transistor T5, a transistor T6, a transistor T8, a transistor T9, a transistor T11, a diode D15, a capacitor C24, a double-pole double-throw relay REL1, an output electrode out_n1, and an output electrode out_p1; one end of a resistor R15 is used as a first path of control signal input end of the pulse output circuit and is connected with a first path of control signal output end of the system controller, and one end of the resistor R27 is used as a second path of control signal input end of the pulse output circuit and is connected with a second path of control signal output end of the system controller; the other end of the resistor R15 is connected with the base electrode of the triode T5 and one end of the resistor R17, and the other end of the resistor R27 is connected with the base electrode of the triode T9 and one end of the resistor R31; the other end of the resistor R17 is connected with the emitter of the triode T5 and then grounded, and the other end of the resistor R31 is connected with the emitter of the triode T9 and then grounded; the collector of the triode T5 is connected with one end of a resistor R7 and one end of a resistor R29, and the collector of the triode T9 is connected with one end of a resistor R23 and one end of a resistor R11; the other end of the resistor R7 is respectively connected with one end of the resistor R3 and the base electrode of the triode T1, and the other end of the resistor R23 is respectively connected with one end of the resistor R20 and the base electrode of the triode T8; the other end of the resistor R3 and the emitter of the triode T1 are connected with a first path of high-voltage power supply end serving as a pulse output circuit and a high-voltage output end of a high-voltage generation circuit, and the other end of the resistor R20 and the emitter of the triode T8 are connected with a second path of high-voltage power supply end serving as the pulse output circuit and a high-voltage output end of the high-voltage generation circuit; the collector of the triode T1 is connected with the emitter of the triode T3 and one moving contact of the double-pole double-throw relay REL1, and a normally open contact corresponding to the moving contact of the double-pole double-throw relay REL1 is connected with the output electrode OUT_N1; the collector of the triode T8 is connected with the emitter of the triode T11 and the other moving contact of the double-pole double-throw relay REL1, and the normally closed contact corresponding to the moving contact of the double-pole double-throw relay REL1 is connected with the output electrode OUT_P1; the other end of the resistor R11 is connected with the base electrode of the triode T3, and the other end of the resistor R29 is connected with the base electrode of the triode T11; the collector of the triode T3 is respectively connected with one end of the capacitor C24, one end of the resistor R60 and the collector of the triode T11; the other end of the capacitor C24 is connected with the other end of the resistor R60 and then grounded; the coil anode of the double-pole double-throw relay REL1 is connected with the cathode of the diode D15 and a 5V power supply of the power supply module; the positive electrode of the diode D15 is connected with the negative electrode of the coil of the double-pole double-throw relay REL1 and the collector electrode of the triode T6; the base electrode of the triode T6 is respectively connected with one end of a resistor R16 and one end of a resistor R21; the other end of the resistor R21 is connected with the emitter of the triode T6 and then grounded; the other end of the resistor R16 is connected to a third path of control signal output end of the system controller.
One end of the resistor R15 and one end of the resistor R27 are used as a first path of control signal input end LF_DRV_N and a second path of control signal input end LF_DRV_P of a pulse output circuit to receive PWM signals controlled by the singlechip U4, and the PWM signals are control signals output by applying pulse waveforms, when LF_DRV_N is at a high level, the triode T5, the triode T1 and the triode T11 are conducted, and high-voltage signals are sent to the human body through the output electrode OUT_N1 and then to the output electrode OUT_P1, so that negative application pulse currents are formed; similarly, when the LF_DRV_P is at a high level, the triode T9, the triode T3 and the triode T8 are conducted, a high-voltage signal passes through the output electrode OUT_P1 to the human body and then to the output electrode OUT_N1 to form forward application pulse current, and the singlechip U4 can realize unidirectional and bidirectional output, pulse width and frequency control of application current through control of the LF_DRV_N and LF_DRV_P signals, generate variable and combined output waveforms, and enrich the use experience of users. The positive electrode of the double-pole double-throw relay REL1 coil is VCC_5V, the negative electrode is connected with the collector electrode of the triode T6, when the application is stopped, the triode T6 is cut off, the double-pole double-throw relay REL1 coil is not conducted, the output of the double-pole double-throw relay REL1 is cut off, the protection of a user is realized, if the system is knocked down due to the failure of an external USB charger, the external network power supply is protected from being applied to a human body through the electrode, and the safety of the user is protected. The resistor R60 is adopted to connect the collector electrode of the triode T11 with the ground, and in the pulse output process, the sampled resistor R60 is used for collecting and outputting pulse voltage in real time, if the voltage is close to 0V, the surface output electrode and the human body do not form an effective loop, and the output is stopped, so that discomfort caused by the fact that the excessive pulse voltage is directly applied to the human body is prevented, and the safety of a user is protected; meanwhile, the current change of the output signal can be reflected in real time by the signal collected on the resistor R60, and constant current output can be realized by combining the boost control signal on software.
As shown in fig. 6, the high voltage generating circuit includes an operational amplifier U2, a capacitor C4, an inductor L1, a resistor R8, a capacitor C8, a transistor T2, a diode D1, a capacitor C6, and a resistor R2; the inverting input end of the operational amplifier U2 is connected with a 5V power supply of the power supply module; the output end of the operational amplifier U2 is connected to the non-inverting input end in a feedback way and is connected with one end of the capacitor C4 and one end of the inductor L1; the other end of the capacitor C4 is grounded; the other end of the inductor L1 is respectively connected with the anode of the diode D1 and the collector of the triode T2; the base electrode of the triode T2 is respectively connected with one end of a resistor R8 and one end of a capacitor C8; the emitter of the triode T2 is grounded; the other end of the resistor R8 and the other end of the capacitor C8 are simultaneously connected with the fourth path of control signal output end of the system controller; the cathode of the diode D1 is respectively connected with one end of the capacitor C6 and one end of the resistor R2; the other end of the capacitor C6 is grounded; the other end of the resistor R2 is used as a high-voltage output end of the high-voltage generating circuit.
The voltage follower formed by the system power supply VCC_5V through the operational amplifier U2 is utilized to generate VBoost voltage which is an input power supply of the high-voltage generator, and the system power supply and the high-voltage power supply are blocked by utilizing the characteristic of high input impedance of the operational amplifier, so that the weak current system is protected. The PWM signal HV_DRV of the singlechip U4 controls the on-off of the triode T2 through a specific frequency, and VBoost stores energy in the magnetic field of the inductor L1 through the frequency and duty ratio control of the HV_DRV; when the triode T2 is turned off, the current of the inductor L1 cannot be suddenly changed, the inductor L1 generates self-induced electromotive force to prevent the magnetic flux from falling, the self-induced electromotive force of the inductor L1 is positive and negative, and is just in the same direction as the power supply, and the voltage is overlapped, so that the purpose of boosting is achieved, and high voltage HV is generated.
As shown in fig. 7, the minimum system of the single-chip microcomputer U4 in the system controller includes the single-chip microcomputer U4, a display screen and control keys; the singlechip U4 is provided with at least four paths of control signal output ends; the display screen and the control keys are connected with the singlechip U4; the display screen and control keys may be replaced directly by a touch screen. The chip U6 is a standard reference voltage chip, and the pin 2 of the chip U6 is connected to the pin 19 of the singlechip U4 to provide external reference voltage for the system. When the battery power loss is large, the system voltage VCC_5V can be caused to fluctuate downwards, and the standard voltage source can be used for avoiding directly using the system voltage as the reference voltage of the singlechip, so that the reliability of battery power measurement is ensured.
Claims (3)
1. A medical low-frequency electric pulse therapeutic apparatus is characterized in that: the system comprises a power supply module, a high voltage generating circuit for generating high voltage, a pulse output circuit for generating pulse waveforms and a system controller; the control signal output end of the system controller is respectively connected with the control signal input end of the high-voltage generating circuit and the control signal input end of the pulse output circuit; the high-voltage output end of the high-voltage generating circuit is connected with the high-voltage power supply end of the pulse output circuit; the power supply module is used for supplying power to the high-voltage generating circuit, the pulse output circuit and the system controller respectively;
the pulse output circuit comprises a resistor R3, a resistor R7, a resistor R11, a resistor R15, a resistor R16, a resistor R17, a resistor R20, a resistor R21, a resistor R23, a resistor R27, a resistor R29, a resistor R31, a resistor R60, a triode T1, a triode T3, a triode T5, a triode T6, a triode T8, a triode T9, a triode T11, a diode D15, a capacitor C24, a double-pole double-throw relay REL1, an output electrode OUT_N1 and an output electrode OUT_P1; one end of a resistor R15 is used as a first path of control signal input end of the pulse output circuit and is connected with a first path of control signal output end of the system controller, and one end of the resistor R27 is used as a second path of control signal input end of the pulse output circuit and is connected with a second path of control signal output end of the system controller; the other end of the resistor R15 is connected with the base electrode of the triode T5 and one end of the resistor R17, and the other end of the resistor R27 is connected with the base electrode of the triode T9 and one end of the resistor R31; the other end of the resistor R17 is connected with the emitter of the triode T5 and then grounded, and the other end of the resistor R31 is connected with the emitter of the triode T9 and then grounded; the collector of the triode T5 is connected with one end of a resistor R7 and one end of a resistor R29, and the collector of the triode T9 is connected with one end of a resistor R23 and one end of a resistor R11; the other end of the resistor R7 is respectively connected with one end of the resistor R3 and the base electrode of the triode T1, and the other end of the resistor R23 is respectively connected with one end of the resistor R20 and the base electrode of the triode T8; the other end of the resistor R3 and the emitter of the triode T1 are connected with a first path of high-voltage power supply end serving as a pulse output circuit and a high-voltage output end of a high-voltage generation circuit, and the other end of the resistor R20 and the emitter of the triode T8 are connected with a second path of high-voltage power supply end serving as the pulse output circuit and a high-voltage output end of the high-voltage generation circuit; the collector of the triode T1 is connected with the emitter of the triode T3 and one moving contact of the double-pole double-throw relay REL1, and a normally open contact corresponding to the moving contact of the double-pole double-throw relay REL1 is connected with the output electrode OUT_N1; the collector of the triode T8 is connected with the emitter of the triode T11 and the other moving contact of the double-pole double-throw relay REL1, and the normally closed contact corresponding to the moving contact of the double-pole double-throw relay REL1 is connected with the output electrode OUT_P1; the other end of the resistor R11 is connected with the base electrode of the triode T3, and the other end of the resistor R29 is connected with the base electrode of the triode T11; the collector of the triode T3 is respectively connected with one end of the capacitor C24, one end of the resistor R60 and the collector of the triode T11; the other end of the capacitor C24 is connected with the other end of the resistor R60 and then grounded; the coil anode of the double-pole double-throw relay REL1 is connected with the cathode of the diode D15 and a 5V power supply of the power supply module; the positive electrode of the diode D15 is connected with the negative electrode of the coil of the double-pole double-throw relay REL1 and the collector electrode of the triode T6; the base electrode of the triode T6 is respectively connected with one end of a resistor R16 and one end of a resistor R21; the other end of the resistor R21 is connected with the emitter of the triode T6 and then grounded; the other end of the resistor R16 is connected with the third path of control signal output end of the system controller;
the high-voltage generating circuit comprises an operational amplifier U2, a capacitor C4, an inductor L1, a resistor R8, a capacitor C8, a triode T2, a diode D1, a capacitor C6 and a resistor R2; the inverting input end of the operational amplifier U2 is connected with a 5V power supply of the power supply module; the output end of the operational amplifier U2 is connected to the non-inverting input end in a feedback way and is connected with one end of the capacitor C4 and one end of the inductor L1; the other end of the capacitor C4 is grounded; the other end of the inductor L1 is respectively connected with the anode of the diode D1 and the collector of the triode T2; the base electrode of the triode T2 is respectively connected with one end of a resistor R8 and one end of a capacitor C8; the emitter of the triode T2 is grounded; the other end of the resistor R8 and the other end of the capacitor C8 are simultaneously connected with the fourth path of control signal output end of the system controller; the cathode of the diode D1 is respectively connected with one end of the capacitor C6 and one end of the resistor R2; the other end of the capacitor C6 is grounded; the other end of the resistor R2 is used as a high-voltage output end of the high-voltage generating circuit.
2. The medical low frequency electric pulse therapeutic apparatus according to claim 1, wherein: the system controller comprises a singlechip U4, a display screen and control keys; the singlechip U4 is provided with at least four paths of control signal output ends; the display screen and the control keys are connected with the singlechip U4.
3. The medical low frequency electric pulse therapeutic apparatus according to claim 1, wherein: the power module comprises a battery, a power switch circuit, a 5V power output circuit and a charging management circuit; the power switch circuit is connected between the battery and the 5V power output circuit, and the battery provides power for the 5V power output circuit through the power switch circuit; the charging management circuit is connected with the battery and the system controller and is used for controlling the charging of the battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710937448.XA CN107693942B (en) | 2017-09-30 | 2017-09-30 | Medical low-frequency electric pulse therapeutic instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710937448.XA CN107693942B (en) | 2017-09-30 | 2017-09-30 | Medical low-frequency electric pulse therapeutic instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107693942A CN107693942A (en) | 2018-02-16 |
| CN107693942B true CN107693942B (en) | 2023-07-11 |
Family
ID=61183997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710937448.XA Active CN107693942B (en) | 2017-09-30 | 2017-09-30 | Medical low-frequency electric pulse therapeutic instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107693942B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111481826A (en) * | 2020-04-09 | 2020-08-04 | 广州丰得利实业公司 | Intelligent variable-frequency cervical vertebra massager |
| CN114391943B (en) * | 2022-01-25 | 2022-10-11 | 天津市鹰泰利安康医疗科技有限责任公司 | Treatment equipment based on multi-electrode bidirectional pulse discharge |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2683170Y (en) * | 2004-01-13 | 2005-03-09 | 余学飞 | Portable low frequency electronic pulse dysmenorrheal therapeutic equipment |
| AU2008355693A1 (en) * | 2008-04-29 | 2009-11-05 | Suntek Medical Scientific And Technologies (Shanghai) Co., Ltd. | A biologic and medical multi-channel low voltage micro-electric-field generator |
| CN101658712A (en) * | 2008-08-29 | 2010-03-03 | 复旦大学附属华山医院 | Electric stimulation therapeutic apparatus with signal prompt |
| CN201966649U (en) * | 2011-02-15 | 2011-09-07 | 杭州得康蓄电池修复仪有限公司 | Multifunctional storage battery restore device |
| CN102921105A (en) * | 2012-07-13 | 2013-02-13 | 北京品驰医疗设备有限公司 | In-vitro test stimulator |
| CN104117148A (en) * | 2014-08-13 | 2014-10-29 | 深圳市是源医学科技有限公司 | Electrical stimulation system for hastening parturition through acupoint between shoulder and ta chuei |
| CN204049971U (en) * | 2014-01-09 | 2014-12-31 | 李治亮 | A kind of intelligent wireless snore stopper |
| CN104330692A (en) * | 2014-11-12 | 2015-02-04 | 云南电网公司曲靖供电局 | Polarity testing device of sleeve current transformer of main transformer |
| CN204557121U (en) * | 2015-03-31 | 2015-08-12 | 长安大学 | A kind of pulse input circuit |
| CN104906689A (en) * | 2015-06-09 | 2015-09-16 | 华南理工大学 | Anxiety, depression and insomnia bipolar constant current therapeutic instrument |
| CN105013084A (en) * | 2015-08-19 | 2015-11-04 | 深圳市是源医学科技有限公司 | Electric stimulation physiotherapeutic instrument |
| CN105536143A (en) * | 2016-01-22 | 2016-05-04 | 毕宏生 | Remote-control electronic acupuncture and moxibustion device |
| CN208626430U (en) * | 2017-09-30 | 2019-03-22 | 南京春之象电子技术有限公司 | A kind of medical low-frequency electric pulse therapeutical instrument |
-
2017
- 2017-09-30 CN CN201710937448.XA patent/CN107693942B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2683170Y (en) * | 2004-01-13 | 2005-03-09 | 余学飞 | Portable low frequency electronic pulse dysmenorrheal therapeutic equipment |
| AU2008355693A1 (en) * | 2008-04-29 | 2009-11-05 | Suntek Medical Scientific And Technologies (Shanghai) Co., Ltd. | A biologic and medical multi-channel low voltage micro-electric-field generator |
| CN101658712A (en) * | 2008-08-29 | 2010-03-03 | 复旦大学附属华山医院 | Electric stimulation therapeutic apparatus with signal prompt |
| CN201966649U (en) * | 2011-02-15 | 2011-09-07 | 杭州得康蓄电池修复仪有限公司 | Multifunctional storage battery restore device |
| CN102921105A (en) * | 2012-07-13 | 2013-02-13 | 北京品驰医疗设备有限公司 | In-vitro test stimulator |
| CN204049971U (en) * | 2014-01-09 | 2014-12-31 | 李治亮 | A kind of intelligent wireless snore stopper |
| CN104117148A (en) * | 2014-08-13 | 2014-10-29 | 深圳市是源医学科技有限公司 | Electrical stimulation system for hastening parturition through acupoint between shoulder and ta chuei |
| CN104330692A (en) * | 2014-11-12 | 2015-02-04 | 云南电网公司曲靖供电局 | Polarity testing device of sleeve current transformer of main transformer |
| CN204557121U (en) * | 2015-03-31 | 2015-08-12 | 长安大学 | A kind of pulse input circuit |
| CN104906689A (en) * | 2015-06-09 | 2015-09-16 | 华南理工大学 | Anxiety, depression and insomnia bipolar constant current therapeutic instrument |
| CN105013084A (en) * | 2015-08-19 | 2015-11-04 | 深圳市是源医学科技有限公司 | Electric stimulation physiotherapeutic instrument |
| CN105536143A (en) * | 2016-01-22 | 2016-05-04 | 毕宏生 | Remote-control electronic acupuncture and moxibustion device |
| CN208626430U (en) * | 2017-09-30 | 2019-03-22 | 南京春之象电子技术有限公司 | A kind of medical low-frequency electric pulse therapeutical instrument |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107693942A (en) | 2018-02-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103068440B (en) | Functional electrical stimulation system | |
| WO2008004204A1 (en) | An electrical stimulation device for nerves or muscles | |
| CN107693942B (en) | Medical low-frequency electric pulse therapeutic instrument | |
| CN106072778B (en) | Voltage-dropping type integrated circuit and electronic cigarette | |
| CN105536142A (en) | Intelligent electric acupuncture apparatus | |
| CN109999342B (en) | Device for adjusting stimulating electric pulse for stimulating human body | |
| TWI508410B (en) | Power management circuit | |
| CN111870812B (en) | Electrical stimulation output circuit | |
| CN109224289B (en) | Skin nerve stimulator set | |
| TW200737648A (en) | Battery charging circuit | |
| CN218923573U (en) | Beauty instrument circuit and radio frequency instrument | |
| CN210629137U (en) | Low-frequency electric pulse circuit for massager | |
| JP4757897B2 (en) | Interference wave device and sine wave generator used therefor | |
| CN208626430U (en) | A kind of medical low-frequency electric pulse therapeutical instrument | |
| CN116135248A (en) | Voltage pulse modulation circuit and lumbar vertebra therapeutic instrument | |
| CN116584712A (en) | Aerosol generating device | |
| CN111330156A (en) | Constant-current stimulation circuit, electric stimulator and signal output method thereof | |
| CN206294889U (en) | Voltage-dropping type integrated circuit and electronic cigarette | |
| CN210228648U (en) | Beauty instrument | |
| CN105727437A (en) | Pulse-mask main-machine control system | |
| CN103914939B (en) | A kind of infrared monitoring warning device | |
| CN221692588U (en) | Control system of intermediate frequency electric stimulation rehabilitation instrument | |
| RU2581481C2 (en) | Duplex electrical shock-excitation cultivator | |
| CN209361651U (en) | A kind of electric field therapy equipment of exportable a variety of composite wave-shapes | |
| CN217612505U (en) | Programmable low-frequency functional electrical stimulation signal generating circuit with electric signal monitoring |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240827 Address after: No. 115, Yaozhuang Group, Shiqiao Village, Shuangqiao Street, Hanjiang District, Yangzhou City, Jiangsu Province, 225009 Patentee after: Fang Kehui Country or region after: China Address before: 210000 room 1801, 1 unit 2, Dongfang Wan Hui North District, Pukou District, Nanjing, Jiangsu Patentee before: NANJING CHUNZHIXIANG ELECTRONIC TECHNOLOGY CO.,LTD. Country or region before: China |