CN207382275U - A kind of low frequency Analgesic devices - Google Patents

Abstract

The utility model discloses a kind of low frequency Analgesic devices, including shell, electrode film, negative electrode plate, rechargeable battery and the internal circuit in shell, the internal circuit includes charging circuit A1, pulse generating circuit A2, regulator circuit A3, key circuit A4, booster circuit A5, pulse driving circuit A6；The pulse driving circuit A6 includes the first pulse driving circuit A61 and the second pulse driving circuit A62；Charging circuit A1 charges for rechargeable battery；The output pulse amplitude of key circuit A4 control pulse generating circuits A2, booster circuit A5 for pulse driving circuit A6 provides driving power after boosting to the 3.6V voltages of rechargeable battery, and pulse driving circuit A6 is output to electrode film and negative electrode plate after pulse signal is carried out isolation amplification.The utility model can meet the need for analgesia of user individual, and the operation is stable, service life are long.

Description

A kind of low frequency Analgesic devices

Technical field

The utility model is related to medical instruments fields, and in particular to a kind of low frequency Analgesic devices.

Background technology

Analgesic devices be it is a kind of by generating physical stimulation to human body, so as to block pain nerve to brain send electric signal with Reach analgesic purpose, the treatment and rehabilitation to chronic ache have good help, almost without side-effects compared to medicine analgesic.Mesh Before, it is many stimulate principle based on skin electrical signal equipment be all generation rule electric signal, and cannot it is strong and weak according to pain and The selection of targetedly stimulus intensity is carried out, often analgesic effect is not achieved in the pain strong to feeling of pain, and uses for a long time When can make body to the rule stimulate generate short-term regulation.

Utility model content

The purpose of this utility model is to provide a kind of low frequency Analgesic devices, cannot independently be set with solving existing Analgesic devices The problem of pain is strong and weak, analgesic effect is bad.

To reach above-mentioned technical purpose, the concrete scheme that the utility model is taken is：A kind of low frequency Analgesic devices are provided, including Shell, electrode film, negative electrode plate, rechargeable battery, internal circuit, the electrode film and negative electrode plate are arranged on outer surface of outer cover On, the internal circuit encapsulation is inside the shell；The internal circuit includes charging circuit A1, pulse generating circuit A2, voltage stabilizing electricity Road A3, key circuit A4, booster circuit A5, pulse driving circuit A6；The pulse driving circuit A6 includes the first pulsed drive Circuit A61 and the second pulse driving circuit A62；

The charging circuit A1 charges for the rechargeable battery, and the rechargeable battery is the key circuit A4, pulse is sent out Raw circuit A2, pulse driving circuit A6, regulator circuit A3 and booster circuit A5 provide power supply power supply；

The regulator circuit A3 is that the pulse generating circuit A2 and key circuit A4 provide constant voltage, to ensure pulse Generation circuit A2 and key circuit normal work；Booster circuit A5 provides driving voltage for the pulse driving circuit A6；

The key circuit A4 outputs a control signal to the pulse generating circuit A2, the pulse generating circuit A2 according to Control signal exports two pulse signals and voltage control signal, the two pulse signals are separately input to the first pulse all the way Driving circuit A61 and the second pulse driving circuit A62, the first pulse driving circuit A61 pulse signals carry out isolation and put Electrode film is output to after big, the second pulse driving circuit A62 pulse signals are output to negative electricity after carrying out isolation amplification Pole piece；The voltage control signal control booster circuit A5 is output to the voltage swing of pulse driving circuit A6.

Compared with prior art, the beneficial effects of the utility model are：

The utility model increases button S2 by the intensity of key circuit A4 or intensity subtracts button S1 and adjusts pulse generating circuit The impulse amplitude of A2 outputs, while pulse generating circuit A2 exports a control signal and gives booster circuit A5, makes booster circuit A5 roots It is put according to impulse amplitude to pulse driving circuit A6 outputting drive voltages, pulse driving circuit A6 and then to electrode slice output through isolation Pulse after big, so as to meet the need for analgesia of user individual；In low frequency Analgesic devices described in the utility model, internal electricity Road is additionally arranged regulator circuit A3, ensure that key circuit A4 and pulse generating circuit A2 carry out steady operation under constant voltage, Improve the service life of this low frequency Analgesic devices.

Below by drawings and examples, the technical solution of the utility model is described in further detail.

Description of the drawings

The attached drawing of the utility model is used for providing further understanding of the present application, the part of the application is formed, at this The same or similar part is represented using identical reference number in a little attached drawings, in the accompanying drawings：

Fig. 1 is that the circuit of the utility model connects block diagram；

Fig. 2 is the circuit module figure of the utility model.

Specific embodiment

To make the purpose, technical scheme and advantage of the application clearer, below in conjunction with drawings and the specific embodiments, to this Application is described in further detail, and the schematic description and description of the application is used to explain the application, composition pair The improper restriction of the application.

As shown in Figures 1 and 2, a kind of low frequency Analgesic devices, including shell, electrode film, negative electrode plate, lithium rechargeable batteries, Internal circuit, electrode film and negative electrode plate are arranged on outer surface of outer cover, and internal circuit encapsulates inside the shell；Internal circuit includes Charging circuit A1, pulse generating circuit A2, regulator circuit A3, key circuit A4, booster circuit A5, pulse driving circuit A6, just Electrode slice and negative electrode plate；Pulse driving circuit A6 includes the first pulse driving circuit A61 and the second pulse driving circuit A62.

Charging circuit A1 charges for lithium rechargeable batteries, and lithium rechargeable batteries are key circuit A4, pulse generating circuit A2, pulse Driving circuit A6, regulator circuit A3 and booster circuit A5 provide 3.6v voltages.

Regulator circuit A3 is by the constant voltage of the 3.6V voltages voltage stabilizing of lithium rechargeable batteries to 3.0V, and by the constant of 3.0V Voltage output is to pulse generating circuit A2 and key circuit A4, to ensure pulse generating circuit A2 and key circuit 3.0V's It is worked normally under constant voltage.

Key circuit A4 outputs a control signal to pulse generating circuit A2, and pulse generating circuit A2 is exported according to control signal Two pulse signals and all the way voltage control signal, two pulse signals are separately input to the first pulse driving circuit A61 and Two pulse driving circuit A62, the first pulse driving circuit A61 are transported to electrode film after pulse signal is carried out isolation amplification, Second pulse driving circuit A62 is output to negative electrode plate after pulse signal is carried out isolation amplification；Voltage control signal control rises Volt circuit A5 is output to the voltage swing of pulse driving circuit A6.

Wherein, charging circuit A1 includes charging management chip U3, self-lock switch K1 and is connected with charging management chip U3 Peripheral circuit；The VIN ends of the model CN3082 of charging management chip U3, charging management chip U3 i.e. the 4th foot pass through plug connector The USB interface of J2 is connected to USB jack, and the LED interfaces of plug connector J2 are connected with the 7th pin of charging management chip U3, so It can show the electricity of lithium rechargeable batteries；The BAT input ports of the charging management chip U3 i.e. anode of the 5th foot and lithium rechargeable batteries electricity Connection, the cathode of lithium rechargeable batteries is that the 3rd pin is grounded with the ground connection of charging management chip U3 mouthful, and charging management chip U3 The 2nd pin be grounded after resistance R23, the 6th pin of charging management chip U3 is grounded after R21, R23 successively；Self-lock switch The first end of K1 is connected to the anode of rechargeable battery, second end and power input, the pulse generating circuit A2 of key circuit A4 Supply voltage detection input, the power input of pulse driving circuit A6, the power input of regulator circuit A3 and boosting The power input electrical connection of circuit A5, i.e., the output terminal of charging circuit A1 exports 3.6V voltages after self-lock switch K1, wherein The both ends of self-lock switch K1 are parallel with capacitance C15, in this way, charging circuit A1 can be charged by USB interface socket power for lithium Battery charges, and without needing to change, easy to use, capacitance C15 energy containers can eliminate the electricity generated when self-lock switch K1 is opened or closed Spark prolongs the service life.

Wherein, pulse generating circuit A2 includes microcontroller U2, and microcontroller U2 uses STM8S003F3P6 type microcontrollers, single The 16th pins of piece machine U2 as the first pulse signal output end, the 10th pin as the second pulse signal output end, make by the 9th pin For power input；3rd pin is as supply voltage detection input；The 16th pin of microcontroller U2 and the first pulsed drive electricity The pulse signal input terminal electrical connection of road A61, the 10th pin of microcontroller U2 and the pulse input of the second pulse driving circuit A62 End electrical connection, i.e.,：The 16th pin of microcontroller U2 and the 10th pin output pulse signal, the 3rd pin of microcontroller U2 is through resistance R14 is electrically connected to the second end of self-lock switch K1, and the 3rd pin is also grounded through resistance R18.

Wherein, regulator circuit A3 includes the 1st of model MC33761SN71-030G, the LDO U4 of LDO U4, LDO U4 Pin and the 3rd pin are electrically connected i.e. access 3.6V voltages, output terminal i.e. the 6th pin of LDO U4 with the second end of self-lock switch K1 Through inductance L2 a constant voltage is exported to power input i.e. the 9th pin and RST input terminals, the key circuit A4 of microcontroller U2 VDD；The 6th pin of LDO U4 is also grounded through capacitance C12, this regulator circuit A3 further includes the periphery electricity being electrically connected with LDO U4 Road, i.e.,：The 1st pin of U4 and the 3rd pin are all grounded after capacitance C4, the 2nd pin ground connection of LDO U4, such regulator circuit A4 is by LDO U4 by 3.6v voltages voltage stabilizing to constant voltage VDD3.0v.

Wherein, the 6th pin of LDO U4 is connected to the 9th pin of microcontroller, and the 6th pin of LDO U4 through inductance L2 RST input terminals i.e. the 4th pin of microcontroller U2 is connected to through inductance L2, resistance R13 successively, the 4th pin of microcontroller U2 also passes through Capacitance C8 is grounded；The 6th pin of LDO U4 is also grounded after inductance L2 serial capacitances C5.

Wherein, key circuit A4 includes intensity increasing key switch S2, intensity subtracts key switch S1, resistance R11 and resistance R12, intensity subtract one end ground connection of key switch S1, the first signal input part i.e. the 11st pin and the electricity of the other end and microcontroller U2 One end electrical connection of R11 is hindered, intensity increases one end ground connection of key switch S2, the secondary signal input terminal of the other end and microcontroller U2 I.e. one end of the 12nd pin and resistance R12 are electrically connected, the other end of resistance R11 and the other end access regulator circuit of resistance R12 Another termination inductance L2 of the constant voltage VDD of A3, the i.e. other end of resistance R11 and resistance R12, i.e., when intensity increases key switch When S2 is pressed, the 2nd foot output voltage control signal control booster circuit A5 output voltage rises of microcontroller U2, pulsed drive electricity Road A6 output pulse amplitudes increase；When intensity, which subtracts key switch S1, to be pressed, the 2nd foot output voltage control letter of microcontroller U2 Number control booster circuit A5 output voltages reduce, and pulse driving circuit A6 output pulse amplitudes reduce.In the present embodiment, button Circuit A4 further includes capacitance C6 and capacitance C7, and capacitance C6 is connected in parallel on the both ends that intensity subtracts key switch S1, and capacitance C7 is connected in parallel on by force Degree increases the both ends of key switch S2, so can be to avoid the instantaneous interference signal generated in S1 and S2 break-makes.

Wherein, booster circuit A5 includes boost chip U1 and peripheral circuit, and boost chip U1 uses TPS61040, boosting The VIN ends of chip U1 are electrically connected through resistance R1 with the second end of self-lock switch K1, and the EN ends of boost chip U1 are connected to NPN type three The collector of pole pipe Q2, control signal output i.e. the 2nd pin of the base stage access microcontroller U2 of NPN type triode Q2, boosting The SW ends of chip U1 outputting drive voltage V+ after diode D1；

The VIN of so boost chip U1 terminates the power supply i.e. 3.6V power supplys into charging circuit A1, and the 2nd of microcontroller U2 draws The conducting of foot output voltage control signal control NPN type triode Q2, the frequency of cut-off, and then boosting core U1 to be controlled to be output to The voltage swing of pulse driving circuit A6, specifically circuit connecting mode be：The emitter ground connection of NPN type triode Q2, base stage The 2nd pin of microcontroller U2 is electrically connected to, collector accesses the EN ends of boost chip U1 and through resistance R5's and boost chip U1 VIN ends are electrically connected, and the VIN ends of boost chip U1 through capacitance C4 with being also grounded and being also connected to diode D1 just through inductance L1 Pole, diode D1 cathode are also electrically connected simultaneously with capacitance C3 first ends, polar capacitor C2 anodes, resistance R4 first ends, and boost core The FB ends of piece U1 are electrically connected with the second end of the first end of resistance R6 and resistance R4, capacitance C3 second ends simultaneously with boost chip U1 Ground terminal, polar capacitor C2 cathode, resistance R4 second ends, the second end of resistance R6 electrical connection after be grounded, resistance R4 both ends are simultaneously It is associated with capacitance C1.

Wherein, the first pulse driving circuit A61 is identical with the second pulse driving circuit A62；First pulse driving circuit A61 Including transistor group T1, resistance R7, photoelectrical coupler Q1 and resistance R2, the model HCPL-2530 of photoelectrical coupler Q1, crystal The grid of pipe group T1 is connected to the 16th pin of microcontroller U2 through resistance R7, and the drain electrode of transistor group T1 is connected to photoelectric coupling Diode cathode i.e. the 3rd pin of giving out light of device Q1, the source electrode ground connection of transistor group T1, the light emitting diode of photoelectrical coupler Q1 is just Pole i.e. the 2nd leads ends are electrically connected to the second end of self-lock switch K1 through resistance R3, that is, have accessed charging circuit A1's

VCC3.6v power supplys；The output terminal of photoelectrical coupler Q1 i.e. the 7th pin is electrically connected with electrode film, photoelectrical coupler Outputting drive voltage V+ of the driving power input terminal of Q1 i.e. the 8th pin through resistance R2 access booster circuits A5.In this way, pulse is electric Pulse signal is transported to electrode film by signal after photoelectrical coupler Q1 isolation amplifications.

Second pulse driving circuit A62 includes transistor group T2, resistance R15, photoelectrical coupler Q4, resistance R9, photoelectricity coupling The model HCPL-2530 of clutch Q2, because the second pulse driving circuit A6 and the first pulse driving circuit A6 employ it is identical Circuit connecting mode, i.e. transistor group T2 are equivalent to transistor group T1, and electric light electric coupler Q4 is equivalent to photoelectrical coupler Q1, Resistance R9 is equivalent to resistance R2, and resistance R15 is equivalent to resistance R7, and the grid of transistor group T2 is connected to microcontroller through resistance R15 The 10th pin of U2.

In the present embodiment, the model NTR4170N of transistor group T1 and transistor group T2.

In the present embodiment, output protection circuit, output protection circuit are also individually added on the first pulse driving circuit A61 Including resistance R16, resistance R17, resistance R19, capacitance C9, one end of resistance R16 is electrically connected to the ground terminal of photoelectrical coupler Q1 That is the 5th pin, one end of other end connection resistance R17 and one end of resistance R19, the other end access capacitance C9's of resistance R17 The middle fracture of one end and microcontroller U2 i.e. the 13rd pin, the other end of resistance R19 and the other end ground connection of capacitance C9.In this way, work as When voltage drop on resistance R19 increases to 0.9V, into microcontroller U2's after resistance R17 and the processing of capacitance C9 filtering wave by prolonging time 13rd pin closes pulse generating module in first rising edge, is simultaneously stopped booster circuit A5 power supplies, user is avoided to grasp by mistake Equipment damage caused by the reasons such as work, the reaction time is Microsecond grade, is significantly better than the AD sample modes detection electric current of similar product Method.

The operation principle of the utility model is：According to the feeling of pain of painful area, the intensity of key circuit A4 increases button S1 Or intensity subtracts button S2, inputs the control signal of adjustment impulse amplitude, pulse generating circuit A2 to pulse generating circuit A2 with this Booster circuit A5 output voltage sizes, the impulse amplitude size of control A6 driving circuit outputs are adjusted according to control signal.

Pulse driving circuit A6 pulse signals are transported to electrode slice after carrying out isolation amplification, so as to meet user individual Need for analgesia；Regulator circuit A3 exports constant power supply, ensures that key circuit A4 and pulse generating circuit A2 stablizes work with this Make, improve stability in use and the service life of this low frequency Analgesic devices.

In use, the electrode film of Analgesic devices and negative electrode plate are attached at painful area, self-lock switch K1, town are pressed Pain device is started to work, and at this moment the positive, negative electrode plate of Analgesic devices and the surface skin at human body pain position form a circuit, at this time Electronic impulse is sent to human body by the internal circuit of Analgesic devices, a nerve block environment is formed, blocks the passback pain of brain Signal, human body are just not felt by pain, reach analgesic effect.Increasing key switch S2 by the intensity of pressing keys circuit A4 increases The impulse amplitude of Analgesic devices output subtracts key switch S1 so as to enhance analgesia intensity, by the intensity of pressing keys circuit A4 and reduces The impulse amplitude of Analgesic devices output is so as to reducing analgesia intensity.

The present embodiment describes more specific and detailed, also gives some advantageous measures of embodiment, still, the implementation Example and advantageous measure when those skilled in the art sees the program, can not be made as the limitation to the utility model Other deformation and equivalent arrangements replacement, should be covered by the scope of the present utility model within.

Claims (10)

1. a kind of low frequency Analgesic devices, it is characterised in that：Including shell, electrode film, negative electrode plate, rechargeable battery, internal circuit, The electrode film and negative electrode plate are arranged on outer surface of outer cover, and the internal circuit encapsulation is inside the shell；The internal circuit Including charging circuit A1, pulse generating circuit A2, regulator circuit A3, key circuit A4, booster circuit A5, pulse driving circuit A6；The pulse driving circuit A6 includes the first pulse driving circuit A61 and the second pulse driving circuit A62；

The charging circuit A1 charges for the rechargeable battery, and the rechargeable battery is the key circuit A4, pulse generation electricity Road A2, pulse driving circuit A6, regulator circuit A3 and booster circuit A5 provide power supply power supply；

The regulator circuit A3 is that the pulse generating circuit A2 and key circuit A4 provide constant voltage, to ensure pulse generation Circuit A2 and key circuit normal work；Booster circuit A5 provides driving voltage for the pulse driving circuit A6；

The key circuit A4 outputs a control signal to the pulse generating circuit A2, and the pulse generating circuit A2 is according to control Signal output two pulse signals and all the way voltage control signal, the two pulse signals are separately input to the first pulsed drive Circuit A61 and the second pulse driving circuit A62, after the first pulse driving circuit A61 pulse signals carry out isolation amplification Electrode film is output to, the second pulse driving circuit A62 pulse signals are output to negative electrode plate after carrying out isolation amplification； The voltage control signal control booster circuit A5 is output to the voltage swing of pulse driving circuit A6.

2. a kind of low frequency Analgesic devices according to claim 1, it is characterised in that：The charging circuit A1 includes Charge Management Chip U3, self-lock switch K1 and the peripheral circuit being connected with charging management chip U3；The VIN ends of the charging management chip U3 connect USB jack is connected to, the BAT input ports of charging management chip U3 are electrically connected with the anode of the rechargeable battery, and rechargeable battery is born The ground connection of pole and charging management chip U3 mouthful ground connection, the first end of the self-lock switch K1 are being connected to the rechargeable battery just Pole, the second end of self-lock switch K1 are examined with the power input of the key circuit A4, the supply voltage of pulse generating circuit A2 Survey the power supply of input terminal, the power input of pulse driving circuit A6, the power input of regulator circuit A3 and booster circuit A5 Input terminal is electrically connected.

3. a kind of low frequency Analgesic devices according to claim 2, it is characterised in that：The pulse generating circuit A2 includes monolithic Machine U2, the microcontroller U2 include the first pulse signal output end, the second pulse signal output end and power input；Described One pulse signal output end is electrically connected with the pulse signal input terminal of the first pulse driving circuit A61, second pulse Signal output part is electrically connected with the pulse input end of the second pulse driving circuit A62.

4. a kind of low frequency Analgesic devices according to claim 3, it is characterised in that：The regulator circuit A3 includes LDO U4, The power input of the LDO U4 is electrically connected to the second end of the self-lock switch K1, and the output terminal of the LDO U4 is through inductance The power input of power input from L2 to the microcontroller U2 and RST input terminals, key circuit A4 export a constant voltage VDD；The output terminal of the LDO U4 is also grounded through capacitance C12.

5. a kind of low frequency Analgesic devices according to claim 4, it is characterised in that：The key circuit A4 includes intensity increasing and presses Key switch S2, intensity subtract key switch S1, resistance R11 and resistance R12, and the intensity subtracts one end ground connection of key switch S1, separately One end is electrically connected with the first signal input part of microcontroller U2 and one end of resistance R11；The intensity increases the one of key switch S2 End ground connection, the other end are electrically connected with the secondary signal input terminal of microcontroller U2 and one end of resistance R12；The resistance R11's is another The other end of one end and resistance R12 access the constant voltage VDD of the regulator circuit A3.

6. a kind of low frequency Analgesic devices according to claim 5, it is characterised in that：The key circuit A4 further includes capacitance C6 And capacitance C7, the capacitance C6 are connected in parallel on the both ends that intensity subtracts key switch S1, the capacitance C7 is connected in parallel on intensity increasing button and opens Close the both ends of S2.

7. a kind of low frequency Analgesic devices according to claim 3, it is characterised in that：The booster circuit A5 includes boost chip U1 and peripheral circuit, the VIN ends of boost chip U1 are electrically connected to the second end of the self-lock switch K1, boost chip through resistance R1 The EN ends of U1 are connected to the collector of NPN type triode Q2, the control signal of the base stage access microcontroller U2 of NPN type triode Q2 Output terminal, the SW ends of the boost chip U1 outputting drive voltage V+ after diode D1；The emitter ground connection of NPN type triode Q2, Collector is also electrically connected through resistance R5 with the VIN ends of microcontroller U1, and the VIN ends of boost chip U1 are also grounded through capacitance C4 and also pass through Inductance L1 is connected to the anode of diode D1, diode D1 cathode also with capacitance C3 first ends, polar capacitor C2 anodes, resistance R4 First end is electrically connected simultaneously, and the FB ends of boost chip U1 are electrically connected with the second end of the first end of resistance R6 and resistance R4, capacitance C3 second ends are electric with the ground terminal of boost chip U1, polar capacitor C2 cathode, resistance R4 second ends, the second end of resistance R6 simultaneously It is grounded after connection, resistance R4 both ends are parallel with capacitance C1.

8. a kind of low frequency Analgesic devices according to claim 3, it is characterised in that：The first pulse driving circuit A61 with The second pulse driving circuit A62 is identical；The first pulse driving circuit A61 includes transistor group T1, resistance R7, photoelectricity Coupler Q1 and resistance R2, the grid of transistor group T1 are connected to the first pulse signal output end of microcontroller U2 through resistance R7, The drain electrode of transistor group T1 is connected to the light emitting diode cathode of photoelectrical coupler Q1, the source electrode ground connection of transistor group T1；Photoelectricity The light emitting diode positive terminal of coupler Q1 is electrically connected to the second end of self-lock switch K1 through resistance R3；Photoelectrical coupler Q1's is defeated Outlet is electrically connected with electrode film, output of the driving power input terminal of photoelectrical coupler Q1 through resistance R2 access booster circuits A5 Driving voltage V+.

9. a kind of low frequency Analgesic devices according to claim 7, it is characterised in that：The first pulse driving circuit A61 is also Output protection circuit is separately provided with, the output protection circuit includes resistance R16, resistance R17, resistance R19, capacitance C9, electricity One end of resistance R16 is connected to the ground terminal of photoelectrical coupler Q1, one end of other end connection resistance R17 and one end of resistance R19, One end of other end access capacitance C9 of resistance R17 and the middle fracture of microcontroller U2, the other end access capacitance C9's of resistance R19 The other end is simultaneously grounded.

10. a kind of low frequency Analgesic devices according to claim 4, it is characterised in that：The regulator circuit A3 is exported constant Voltage VDD is connected to the RST input ports of microcontroller U2 through resistance R13, and the RST input terminals of the microcontroller U2 also connect through capacitance C8 Ground；The output terminal of the LDO U4 is also grounded after inductance L2 serial capacitances C5.