Electrode control system for electrical stimulation equipment

Abstract

The utility model belongs to the technical field of beauty and medical instruments, and particularly relates to an electrode control system for electrical stimulation equipment, which comprises at least one pair of electrodes and a controllable voltage source circuit used for generating voltage waveforms required by the electrode control system; the controllable current source circuit is used for generating a current waveform required by the electrode control system; the polarity switching circuit is used for connecting the electrode with the controllable voltage source circuit and the controllable current source circuit and outputting waveforms generated by the controllable voltage source and the controllable current source through the electrode; and the control and monitoring circuit is used for controlling and monitoring the controllable voltage source circuit, the controllable current source circuit and the polarity switching circuit. According to the utility model, the number of the electrodes can be flexibly selected, real-time switching between a constant-voltage mode and a constant-current mode can be realized, and an electric field which is flexibly changed can be output on a human body by cooperating with the electrodes.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of beauty and medical instrument technology, specifically related to a kind of electrode control system for electric stimulation equipment. BACKGROUND

[0002] Electric stimulation technology is widely used in medical treatment, health care and beauty.Electric stimulation equipment includes various low-frequency electrotherapy apparatus, massage instrument or beauty instrument.The basic principle of various electric stimulation equipment is consistent: through control circuit, electric stimulation signal is generated, and electric stimulation signal is introduced into human body specific part, organ or acupoint etc.

[0003] The purpose, efficacy, body feeling of various electric stimulation equipment are different, in that 1) its waveform parameter is different, such as different frequency, amplitude, duty ratio, constant voltage constant current mode etc.;2) electrode design is different, such as different size, number, electrode contact position of human body etc.

[0004] The existing electric stimulation equipment mostly has the following shortcomings:

[0005] First, the function is simple and single, and is designed for single scene or purpose, such as only supporting single mode output: constant current mode or constant voltage mode, especially in the equipment of multiple electrode output.

[0006] Second, the number of electrodes supported by control circuit is fixed, and appears in pairs, finally the electric field formed on human body is single, cannot output flexible and changeable electric field, resulting in limited treatment, health care, beauty effect or monotonous body feeling.

[0007] Third, the complexity and cost of control circuit of the device with complex function also increase exponentially.

[0008] In view of the defects of prior art, the utility model provides a new technical scheme to solve. UTILITY MODEL CONTENT

[0009] The problem to be solved by the utility model is that the existing electric stimulation 1) function is simple and single, only supports single mode output: constant current mode or constant voltage mode;2) the number of electrodes supported by control circuit is fixed, and appears in pairs, finally the electric field formed on human body is single, cannot output flexible and changeable electric field, resulting in limited treatment, health care, beauty effect or monotonous body feeling;3) the complexity and cost of control circuit of the device with complex function also increase exponentially.

[0010] In order to solve the above technical problems, the utility model provides the following technical scheme:

[0011] A kind of electrode control system for electric stimulation equipment, including at least one pair of electrodes, further comprising:

[0012] a controllable voltage source circuit for generating a voltage waveform required by the electrode control system;

[0013] a controllable current source circuit for generating a current waveform required by the electrode control system;

[0014] a polarity switching circuit for connecting the electrode and the controllable voltage source circuit, the controllable current source circuit, and outputting the waveform generated by the controllable voltage source circuit and the controllable current source circuit through the electrode;

[0015] a control and monitoring circuit for controlling and monitoring the controllable voltage source circuit, the controllable current source circuit, and the polarity switching circuit.

[0016] Further, the controllable voltage source circuit comprises a voltage source, a power switch, an operational amplifier AMP101, a power amplifier tube, and feedback resistors R101 and R102,

[0017] The voltage source VCC is connected with the power switch, and the power switch is used for controlling whether the controllable voltage source circuit is turned on or not. The control signal of the power switch comes from the logic control signal one of the control and monitoring circuit.

[0018] The input signal of the operational amplifier AMP101 comes from the voltage signal of the digital-to-analog converter DAC501 in the control and monitoring circuit.

[0019] The power amplifier tube is arranged at the output end of the operational amplifier AMP101, and the power amplifier tube is connected with the electrode through the polarity switching circuit, and is used for enhancing the output of the operational amplifier AMP101 to have a current load capacity. The power switch is connected in series with the power amplifier tube.

[0020] The amplification multiple of the operational amplifier AMP101 and the power amplifier tube is the sum of the resistance value of the feedback resistor R101 and the resistance value of the feedback resistor R102 divided by the resistance value of the feedback resistor R102.

[0021] Further, the controllable current source circuit comprises an adjusting tube, an operational amplifier AMP301, a first sampling resistor, and a negative feedback circuit composed of the first sampling resistor, the operational amplifier AMP301, and the adjusting tube,

[0022] The adjusting tube is arranged at the output end of the operational amplifier AMP301, and the adjusting tube works in a variable resistance state. The on-resistance of the adjusting tube is controlled by the operational amplifier AMP301.

[0023] The same-direction input end of the operational amplifier AMP301 receives the voltage signal of the digital-to-analog converter DAC502 from the control and monitoring circuit.

[0024] The voltage on the first sampling resistor is fed back to the reverse input end of the operational amplifier AMP301.

[0025] Further, the controllable current source circuit further comprises a mode switching switch and a second sampling resistor, the mode switching switch is connected with the second sampling resistor in series and then connected with the first sampling resistor in parallel,

[0026] The control signal of the mode switching switch is from the second logic control signal of the control and monitoring circuit.

[0027] Further, the polarity switching circuit is composed of an inverter bridge formed by an even number of switches, comprises an even number of upper bridge arms, lower bridge arms paired with the upper bridge arms, the number of bridge arm pairs is N, and N≥2.

[0028] Further, the upper bridge arms of the polarity switching circuit are connected with the controllable voltage source circuit; the lower bridge arms are connected with the controllable current source circuit; the electrodes are connected with the connection nodes of the upper bridge arms and the lower bridge arms, the upper bridge arm switches are controlled by the control and monitoring circuit, the switches of the upper bridge arms and the lower bridge arms are controlled by the control and monitoring circuit, and the upper end voltage and the lower end voltage of the polarity switching circuit are monitored by the control and monitoring circuit.

[0029] Further, the number of electrodes is ≤ the number of switches in the polarity switching circuit / 2.

[0030] Further, the control and monitoring circuit comprises an MCU for generating and executing control logic, a first driving circuit for driving the controllable voltage source circuit, and a plurality of general-purpose input and output ports integrated with the MCU, wherein one of the general-purpose input and output ports is used to output the first logic control signal, and the general-purpose input and output port is connected with the power switch through the first driving circuit.

[0031] Further, the control and monitoring circuit comprises a second driving circuit for driving the polarity switching circuit, and 2×N ports in the remaining general-purpose input and output ports, each port is connected with each switch pair of the polarity switching circuit through the second driving circuit.

[0032] Further, the control and monitoring circuit comprises operational amplifiers AMP501, AMP502, and AMP503 for buffering and conditioning the input signal, and digital-to-analog converters DAC501 and DAC502 and analog-to-digital converters ADC501, ADC502, and ADC503 integrated with the MCU, the controllable voltage source circuit is connected to the analog-to-digital converter ADC501 through the operational amplifier AMP501, the polarity switching circuit is connected to the analog-to-digital converter ADC502 through the operational amplifier AMP502, and the controllable current source circuit is connected to the analog-to-digital converter ADC503 through the operational amplifier AMP503.

[0033] Compared with the prior art, the utility model has the beneficial effects that:

[0034] (1) The utility model provides a general circuit topology for electric stimulation equipment, adopt this kind of circuit topology, support multi -electrode output, and electrode quantity can be flexibly selected according to application demand.

[0035] (2) The utility model supports the real -time switching of constant voltage mode and constant current mode, and the switching time can be ignored.

[0036] (3) The utility model cooperates with electrode and can output flexible changeable electric field on human body.

[0037] (4) The utility model has lower circuit complexity and has universality. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 It is the circuit structure diagram of electrode control system of the utility model embodiment 1;

[0039] Figure 2 It is the electrode distribution schematic drawing of the utility model embodiment 5.

[0040] Reference Signs:

[0041] 1 voltage source circuit;2 polarity switching circuit;3 controllable current source circuit;4 electrode module;5 control and monitoring circuit;6 electrode;7 shell. DETAILED DESCRIPTION

[0042] The technical scheme of the utility model will be clearly described below in combination with the drawings, and obviously, the described embodiment is not all the embodiments of the utility model, and all other embodiments obtained by the person skilled in the art without making creative efforts belong to the protection scope of the utility model.

[0043] Embodiment 1

[0044] Reference Figure 1 The utility model provides a kind of electrode control system for electric stimulation equipment, including controllable voltage source circuit 1, polarity switching circuit 2, controllable current source circuit 3, electrode module 4, control and monitoring circuit 5.Thereinto, controllable voltage source circuit 1, polarity switching circuit 2, electrode module 4, controllable current source circuit 3 present in the form of series;Control and monitoring circuit 5 and controllable voltage source circuit 1, polarity switching circuit 2, controllable current source circuit 3 present in the form of parallel.

[0045] Controllable voltage source circuit 1 is used to generate the voltage waveform required by electrode control system.

[0046] In controllable voltage source circuit 1, there is voltage source VCC, power switch Q101, operational amplifier AMP101, power amplifier tube Q102 and feedback resistance R101, R102.

[0047] The specific circuit connection is as follows:

[0048] The voltage source VCC is connected with the drain of the power switch Q101, the gate of the power switch Q101 is connected with the general input and output port GPIO501 of the control and monitoring circuit 5, the source of the power switch Q101 is connected with the drain of the power amplifier Q102, the gate of the power amplifier Q102 is connected with the output end of the operational amplifier AMP101, the same direction input end of the operational amplifier AMP101 is connected with the digital-to-analog converter DAC501 of the control and monitoring circuit 5, the reverse input end of the operational amplifier AMP101 is connected with the feedback resistors R101 and R102, wherein the first end of the feedback resistor R101 is connected with the reverse input end of the operational amplifier AMP101, the second end of the feedback resistor R101 is connected with the source of the power amplifier Q102; the first end of the feedback resistor R102 is grounded, and the second end of the feedback resistor R102 is connected with the reverse input end of the operational amplifier AMP101.

[0049] The voltage source VCC can be obtained by various conventional ways, and in the embodiment, 30V is selected;

[0050] The power switch Q101 can control the opening and closing of the controllable voltage source circuit 1, and the control signal comes from the logic control signal one output by the general input and output port GPIO501 of the control and monitoring circuit 5;

[0051] The input signal of the operational amplifier AMP101 comes from the digital-to-analog converter DAC501 of the control and monitoring circuit 5, and in the embodiment, the voltage range output by the DAC501 can be 0-2.5V;

[0052] The power amplifier Q102 is arranged at the output end of the operational amplifier AMP101, which enhances the output load capacity of the operational amplifier AMP101, especially the capacity of carrying large current load. The power amplifier Q102 receives the output signal from the operational amplifier AMP101, and amplifies the signal current through its amplification function, and the amplified current can drive a large current load, thereby realizing the capacity of the operational amplifier AMP101 to carry a large current load.

[0053] Under the feedback of the feedback resistors R101 and R102, the operational amplifier AMP101 and the power amplifier Q102 amplify the input signal by a certain multiple and output, specifically, the amplification multiple=(R101+R102) / R102, and in the embodiment, the amplification multiple is 12 times.

[0054] According to the above principle, it can be known that the controllable voltage source circuit 1 can output any voltage between 0-30V, and the voltage waveform, i.e. the voltage variation law, is consistent with the output voltage of the DAC 501. In other embodiments, by selecting appropriate feedback resistance, appropriate operational amplifier working voltage, appropriate power amplifier tube voltage resistance value and appropriate VCC voltage, the controllable voltage source circuit 1 can output any controllable voltage from several millivolts to several hundred volts.

[0055] The controllable current source circuit 3 is used to generate the current waveform required by the electrode control system.

[0056] In the controllable current source circuit 3, there are an adjusting tube Q301, an operational amplifier AMP301, a first sampling resistor R301, a mode switching switch Q302 and a second sampling resistor R302.

[0057] The specific circuit connection is as follows:

[0058] The gate of the adjusting tube Q301 is connected with the output end of the operational amplifier AMP301, the drain of the adjusting tube Q301 is connected with the polarity switching circuit 2, and the source of the adjusting tube Q301 is connected with the first end of the first sampling resistor R301; the second end of the first sampling resistor R301 is grounded; the same direction input end of the operational amplifier AMP301 is connected with the digital-to-analog converter DAC502 of the control and monitoring circuit 5, and the opposite direction input end of the operational amplifier AMP301 is connected with the first end of the first sampling resistor R301;

[0059] The gate of the mode switching switch Q302 is connected with the general input and output port GPIO510 of the control and monitoring circuit 5, the drain of the mode switching switch Q302 is connected with the opposite direction input end of the operational amplifier AMP301, and the source of the mode switching switch Q302 is connected with the first end of the second sampling resistor R302; the second end of the second sampling resistor R302 is grounded.

[0060] The adjusting tube Q301 is arranged at the output end of the operational amplifier AMP301, and the adjusting tube Q301 works in a variable resistance state, and its conduction resistance is controlled by the operational amplifier AMP301;

[0061] The voltage on the first sampling resistor R301 is fed back to the opposite direction input end of the operational amplifier AMP301, and the same direction input end of the operational amplifier AMP301 receives the voltage signal from the digital-to-analog converter DAC502 of the control and monitoring circuit 5;

[0062] The negative feedback circuit composed of the first sampling resistor R301, the operational amplifier AMP301 and the adjusting tube Q301 makes the voltage on the first sampling resistor R301 equal to the output voltage of the digital-to-analog converter DAC502, so that the current flowing through the first sampling resistor R301 is a controllable value.

[0063] In the embodiment, the voltage range output by the digital-to-analog converter DAC502 can be 0-2.5V, and the value of the first sampling resistor R301 is 20Ω. According to the above principle description, it is not difficult to know that in the embodiment, the controllable current source circuit 3 can output any current between 0-2.5V / 20Ω, i.e. 0-125mA, and the current waveform, i.e. the current change rule, is consistent with the output voltage of the DAC502. In other embodiments, by selecting a sampling resistor with a proper resistance value, the controllable current source circuit 3 can output any controllable current in the range of several microamperes to several milliamperes.

[0064] The working principle of the mode switching switch Q302 and the second sampling resistor R302 is as follows:

[0065] The resistance value of the second sampling resistor R302 is usually more than one order of magnitude smaller than that of the first sampling resistor R301. In the embodiment, the second sampling resistor R302 is 1Ω. When the mode switching switch Q302 is in the on state under the control of the control and monitoring circuit 5, the first sampling resistor R301 and the second sampling resistor R302 are in parallel, the effective sampling resistance value ≈ the second sampling resistor R302, i.e. 1Ω, and at this time the maximum current that can be output by the controllable current source circuit 3 is 2.5V / 1Ω=2.5A. Relative to the milliamperes of current that the human body can tolerate, the controllable current source circuit 3 can be considered to be working in a bypass state, and has a current limiting protection function. The specific current limiting value can be set by the output voltage of the digital-to-analog converter DAC502. In other embodiments, the second sampling resistor R302 can be set to other appropriate resistance values.

[0066] The polarity switching circuit 2 is composed of an even number of switches and is used to connect the electrode module 4 and output the waveforms generated by the controllable voltage source and / or the controllable current source through the electrode module 4.

[0067] In the polarity switching circuit 2, the multiple groups of switches constitute an inverter bridge. In the embodiment, the switches Q201-Q204 constitute four upper bridge arms, and the switches Q211-Q214 constitute four lower bridge arms. In other embodiments, the number of bridge arms can be increased or decreased according to application requirements, and the upper bridge arms and the lower bridge arms appear in pairs, and the number of bridge arm pairs can be N, N≥2, N being a positive integer.

[0068] The upper bridge arm of the polarity switching circuit 2 is connected with the controllable voltage source circuit 1; the lower bridge arm is connected with the controllable current source circuit 3; the electrodes in the electrode module 4 are led out from the connection position of the upper bridge arm and the lower bridge arm; the switches of the upper bridge arm and the lower bridge arm are controlled by the control and monitoring circuit 5; the upper end voltage and the lower end voltage of the polarity switching circuit 2 are monitored by the control and monitoring circuit 5 after being buffered by the operational amplifier AMP501 and the operational amplifier AMP502 in the control and monitoring circuit 5 respectively.

[0069] The specific circuit connection is as follows:

[0070] The source electrode of the switch Q201 is connected with the drain electrode of the switch Q211, the drain electrode of the switch Q201 is connected with the same direction input end of the operational amplifier AMP501 in the control and monitoring circuit 5, the gate electrode of the switch Q201 is connected with the general input and output port GPIO502 in the control and monitoring circuit 5 through the second driving circuit, the same direction input end of the operational amplifier AMP501 is connected with the source electrode of the power amplifier Q102, and the output end of the operational amplifier AMP501 is connected with the analog-to-digital converter ADC501 in the control and monitoring circuit 5.

[0071] The source electrode of the switch Q211 is connected with the same direction input end of the operational amplifier AMP502 in the control and monitoring circuit 5, the gate electrode of the switch Q211 is connected with the general input and output port GPIO509 in the control and monitoring circuit 5 through the second driving circuit, the same direction input end of the operational amplifier AMP502 is connected with the drain electrode of the adjusting tube Q301, and the output end of the operational amplifier AMP502 is connected with the analog-to-digital converter ADC502 in the control and monitoring circuit 5.

[0072] The electrodes are connected at the connection node of the switch Q201 and the switch Q211.

[0073] The switch Q202 is connected with the switch Q212, the switch Q203 is connected with the switch Q213, and the switch Q204 is connected with the switch Q214, which will not be analyzed.

[0074] The electrode module 4 includes a plurality of electrodes, and the form of the electrodes includes but is not limited to electrode sheets, electrode heads, electric needles or combinations thereof, and the number of the electrodes is less than half of the number of the switches in the polarity switching circuit 2, which is used to directly contact the human skin or tissue.

[0075] The number of the electrode conductive parts in the embodiment is four, such as the electrode sheet P401, the electrode sheet P402, the electrode sheet P403 and the electrode sheet P404.

[0076] The control and monitoring circuit 5 includes but is not limited to MCU, DAC, ADC, driving circuit and other circuit units, which is used to realize the control and monitoring of the controllable voltage source circuit 1, the controllable current source circuit 3 and the polarity switching circuit 2.

[0077] In the control and monitoring circuit 5, there is a microcontroller MCU for generating and executing control logic, a first drive circuit for driving the controllable voltage source circuit 1, a second drive circuit for driving the polarity switching circuit 2, and operational amplifiers AMP501-AMP503 for monitoring the input signal buffering and conditioning.

[0078] In this embodiment, the MCU integrates general-purpose input / output ports GPIO501-GPIO510, digital-to-analog converters DAC501-DAC502, and analog-to-digital converters ADC501-ADC503. In other embodiments, the digital-to-analog converters DAC and the analog-to-digital converters ADC can also be separate devices.

[0079] The MCU can use GD32F303VCT6.

[0080] In this scheme, the number of electrodes and the size of the polarity switching circuit 2 can be increased or decreased according to application requirements; the controllable voltage source circuit 3 can be degraded to a voltage stabilizing source circuit; and the controllable current source circuit 3 can be degraded to a constant current source circuit.

[0081] The specific circuit connections of the control and monitoring circuit 5 are as follows:

[0082] The general-purpose input / output port GPIO501 of the MCU is connected to the gate of the power switch Q101 through a first drive circuit, which is used to drive the controllable voltage source circuit 1. The first drive circuit adjusts the output voltage of the controllable voltage source circuit 1 according to the control signal of the MCU.

[0083] The general-purpose input / output ports GPIO502-509 of the MCU are respectively matched to the switches of the polarity switching circuit 2 through a second drive circuit, which is used to drive the polarity switching circuit 2. The second drive circuit switches the polarity of the electrodes according to the control signal of the MCU.

[0084] The digital-to-analog converter DAC501 of the MCU is connected to the same direction input terminal of the operational amplifier AMP101; and the digital-to-analog converter DAC502 of the MCU is connected to the same direction input terminal of the operational amplifier AMP301.

[0085] The analog-to-digital converter ADC501 is connected to the source of the power amplifier Q102 through the operational amplifier AMP501; the analog-to-digital converter ADC502 is connected to the drain of the adjustment tube Q301 through the operational amplifier AMP502; and the analog-to-digital converter ADC503 is connected to the drain of the mode switching switch Q302 through the operational amplifier AMP503.

[0086] Reference Figure 1In a specific embodiment, when the electrode control system is applied to a beauty instrument, the system works as follows:

[0087] When the GPIO 510 controls the mode selection switch Q302 to be on, and the DAC 502 outputs a larger voltage value, typically, such as a voltage value ≥ 2.5V, the system works in constant voltage mode, and the output voltage waveform is the amplified waveform of the DAC 501 output voltage.

[0088] When the GPIO 510 controls the mode selection switch Q302 to be off, and the DAC 501 outputs a larger voltage value, such as a voltage value ≥ 2.5V, the system works in constant current mode, and the output current waveform is the V-I converted waveform of the DAC 502 output voltage. The constant voltage and constant current modes can be switched in real time according to actual needs, and the switching time can reach the order of microseconds.

[0089] The switches in the polarity switching circuit 2 can be arbitrarily combined in terms of logic relationship and phase relationship under the control of the GPIO 502-509, so as to form a flexible and changeable electric field and current on the skin through the electrodes.

[0090] Exemplary examples are as follows:

[0091] When the switch Q201 and the switch Q212 are on at the same time, and the other switches are off, an electric field and current are formed between the electrodes P401-P402;

[0092] When the switch Q201 and the switch Q212, and the switch Q213 are on at the same time, and the other switches are off, an electric field and current are formed between the electrodes P401-P402 and the electrodes P401-P403;

[0093] When the switch Q201, the switch Q202, and the switch Q213, and the switch Q214 are on at the same time, and the other switches are off, an electric field and current are formed between the electrodes P401, the electrodes P402, and the electrodes P401, the electrodes P403.

[0094] The analog-to-digital converters ADC501-ADC503 can monitor the voltages or currents at various points in the system. When an abnormality occurs, the port GPIO501 can control the power switch Q101 to close the power supply of the system power loop through the first driving circuit, so as to achieve the purpose of automatic protection.

[0095] Embodiment 2

[0096] Unlike embodiment 1, in this embodiment, the controllable voltage source 1 can be realized by other circuits, including but not limited to DC-DC circuits with boost, buck, or buck-boost, buck LDO circuits, operational amplifiers, or combinations of the above circuits; the output voltage of the controllable voltage source 1 can be several volts to several hundred volts.

[0097] Example 3

[0098] Unlike Embodiment 1, the controllable current source circuit 3 in this embodiment can be implemented by other circuits, including but not limited to integrated chips, packaged circuit modules, etc.; the output current of the controllable current source can be from several microamps to several amperes.

[0099] Example 4

[0100] Unlike Embodiment 1, the switches in the polarity switching circuit 2 in this embodiment can be implemented by means of transistors, MOSFETs, phototransistors, photoMOSFETs, relays, or combinations of the above components; the number of switches can be set as needed, which is one of the technical features of this solution.

[0101] Example 5

[0102] refer to Figure 2 This example illustrates an electrode shape and distribution.

[0103] In this embodiment, all four electrodes 6 are elliptical stainless steel electrodes, and the four electrodes 5 are uniformly arranged in a ring within the circular plastic shell 7.

[0104] The design of electrodes, especially the number, material, size, shape, and distribution of electrodes, can be derived through theoretical calculations or simulations based on the intended use of the electrical stimulation device and the physiological model of the intended application site.

[0105] The above technical features constitute the preferred embodiment of this utility model, which has strong adaptability and optimal implementation effect. Non-essential technical features can be added or removed according to actual needs to meet the needs of different situations.

[0106] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.

Claims

1. An electrode control system for an electrical stimulation device comprising at least one pair of electrodes, characterized in that, Also include: Controllable voltage source circuit for generating the required voltage waveform of electrode control system; Controllable current source circuit for generating the required current waveform of electrode control system; Polarity switching circuit for connecting the electrode and controllable voltage source circuit, controllable current source circuit, and outputting the waveform generated by controllable voltage source and controllable current source through the electrode; Control and monitoring circuit for controlling and monitoring controllable voltage source circuit, controllable current source circuit and polarity switching circuit.

2. The electrode control system for an electrical stimulation device of claim 1, wherein, Controllable voltage source circuit, including voltage source, power switch, operational amplifier AMP101, power amplifier tube and feedback resistor R101, feedback resistor R102, The voltage source VCC is connected with the power switch, and the power switch is used to control the opening and closing of the controllable voltage source circuit. The control signal of the power switch comes from the logic control signal one of the control and monitoring circuit; The input signal of the operational amplifier AMP101 comes from the voltage signal of the digital-to-analog converter DAC501 of the control and monitoring circuit; The power amplifier tube is arranged at the output end of the operational amplifier AMP101, and the power amplifier tube is connected with the electrode through the polarity switching circuit, which is used to enhance the output of the operational amplifier AMP101 with current load capacity; the power switch is connected in series with the power amplifier tube; The amplification factor of the operational amplifier AMP101 and the power amplifier tube is the sum of the resistance value of the feedback resistor R101 and the resistance value of the feedback resistor R102 divided by the resistance value of the feedback resistor R102.

3. The electrode control system for an electrical stimulation device of claim 1, wherein, Controllable current source circuit, including adjusting tube, operational amplifier AMP301, first sampling resistor, first sampling resistor, operational amplifier AMP301 and adjusting tube constitute negative feedback circuit, The adjusting tube is arranged at the output end of the operational amplifier AMP301, and the adjusting tube works in the variable resistance state, and the on-resistance of the adjusting tube is controlled by the operational amplifier AMP301; The same direction input end of the operational amplifier AMP301 receives the voltage signal from the digital-to-analog converter DAC502 in the control and monitoring circuit; The voltage on the first sampling resistor is fed back to the reverse input end of the operational amplifier AMP301.

4. The electrode control system for an electro-stimulation device of claim 3, wherein, The controllable current source circuit further comprises a mode switching switch and a second sampling resistor, and the mode switching switch and the second sampling resistor are connected in series and then connected in parallel with the first sampling resistor, The control signal of the mode switching switch comes from the logic control signal two of the control and monitoring circuit.

5. The electrode control system for an electrical stimulation device of claim 2, wherein, The polarity switching circuit is composed of an inverter bridge with an even number of switches, including an even number of upper bridge arms, a lower bridge arm paired with the upper bridge arm, the number of bridge arm pairs is N, and N≥2.

6. The electrode control system for an electro-stimulation device of claim 5, wherein, The upper bridge arm of the polarity switching circuit is connected with the controllable voltage source circuit; the lower bridge arm is connected with the controllable current source circuit; the electrode is connected with the connection node of the upper bridge arm and the lower bridge arm; the upper bridge arm switch is controlled by the control and monitoring circuit; the switches of the upper bridge arm and the lower bridge arm are controlled by the control and monitoring circuit; the upper end voltage and the lower end voltage of the polarity switching circuit are monitored by the control and monitoring circuit.

7. The electrode control system for an electro-stimulation device of claim 6, wherein, The number of electrodes is less than or equal to half the number of switches in the polarity switching circuit.

8. The electrode control system for an electrical stimulation device of claim 2, wherein, The control and monitoring circuit comprises an MCU for generating and executing control logic, a first driving circuit for driving the controllable voltage source circuit, the MCU is integrated with at least 6-2N general input and output ports, one of which is used to output a logic control signal one, and the general input and output port is connected with the power switch through the first driving circuit.

9. The electrode control system for an electro-stimulation device of claim 8, wherein, The control and monitoring circuit comprises a second driving circuit for driving the polarity switching circuit, 2×N ports in the remaining general input and output ports, each port is connected with each switch pair of the polarity switching circuit through the second driving circuit.

10. The electrode control system for an electro-stimulation device of claim 9, wherein, The control and monitoring circuit comprises operational amplifiers AMP501, AMP501, AMP503 for monitoring the input signal buffering and conditioning, the MCU is integrated with digital-to-analog converters DAC501, DAC502, and analog-to-digital converters ADC501, ADC502, ADC503, the controllable voltage source circuit is connected to the analog-to-digital converter ADC501 through the operational amplifier AMP501, the polarity switching circuit is connected to the analog-to-digital converter ADC502 through the operational amplifier AMP502, and the controllable current source circuit is connected to the analog-to-digital converter ADC503 through the operational amplifier AMP503.

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