Electric pulse EMS electrode slice control circuit

Abstract

The utility model relates to the technical field of electric pulse control, in particular to an electric pulse EMS electrode slice control circuit which comprises an EMS driving module and an acquisition module. The EMS driving module adopts an H-bridge mode to drive an EMS electrode plate and collects feedback current in real time; the acquisition module is used for acquiring power supply voltage of the EMS driving module and output current feedback information of the EMS driving module. According to the utility model, APP remote control or local off-line mode control can be cooperated; the control circuit is finer in mode subdivision and wider in application; the H-bridge driving circuit of the control circuit is additionally provided with a protection circuit and a real-time feedback circuit, so that the control circuit is safer in use and longer in service life.

Description

Technical Field

[0001] The utility model relates to the technical field of electric pulse control, and particularly relates to an electric pulse EMS electrode sheet control circuit. Background Technique

[0002] EMS is the abbreviation of English Electric Muscle Stimulation, which means muscle electric pulse stimulation. Its principle is to simulate the electric signals sent by the human brain during exercise to control muscle contraction. EMS weight loss is achieved by wearing a special conductive training suit. The controller on the training suit outputs bioelectric signals simulating those released by the brain, which are transmitted to muscle neurons in the form of electric pulses, triggering muscle contraction. Then, by matching simple movements with the passively contracting muscles to form "opposition", the effect of losing weight and increasing muscle mass can be achieved.

[0003] With the acceleration of the modern life rhythm, people are increasingly pursuing efficient and convenient weight loss methods. As a new weight loss means, EMS technology can achieve the effects of rapid fat burning and muscle building by stimulating muscle contraction with electric pulses. However, the control circuits in existing EMS controllers on the market have single functions, complex operations, poor intelligence, and low safety and reliability. Content of the Utility Model

[0004] In order to solve the above-mentioned defects and deficiencies existing in the prior art, the utility model provides an electric pulse EMS electrode sheet control circuit.

[0005] To solve the above technical problems, the utility model provides an electric pulse EMS electrode sheet control circuit, which includes an EMS driving module and a collecting module;

[0006] The EMS driving module drives the EMS electrode sheet in an H-bridge manner and collects the feedback current in real time;

[0007] The collecting module is used to collect the supply voltage of the EMS driving module and the output current feedback information of the EMS driving module;

[0008] The EMS driving module includes an H-bridge circuit, a first H-bridge driving circuit and a second H-bridge driving circuit; both the first H-bridge driving circuit and the second H-bridge driving circuit are used to drive the H-bridge circuit.

[0009] Preferably, the first H-bridge driving circuit includes an NPN triode Q5. The base of the NPN triode Q5 is connected to one end of a pulse generator through a resistor R15; the collector of the NPN triode Q5 is respectively connected to one ends of a resistor R13 and a resistor R19, and the other ends of the resistor R13 and the resistor R19 are both connected to the H-bridge circuit; the emitter of the NPN triode Q5 is grounded.

[0010] Preferably, the second H-bridge driving circuit includes an NPN transistor Q8. The base of the NPN transistor Q8 is connected to the other end of a pulse generator through a resistor R23. The collector of the NPN transistor Q8 is respectively connected to one ends of a resistor R20 and a resistor R14, and the other ends of the resistor R20 and the resistor R14 are both connected to an H-bridge circuit. The emitter of the NPN transistor Q8 is grounded.

[0011] Preferably, the H-bridge circuit includes Q3, Q4, Q6 and Q7, and Q3, Q4, Q6 and Q7 are all PNP transistors. The base of the PNP transistor Q3 is respectively connected to one ends of a resistor R13 and a resistor R9. The collector of the PNP transistor Q3 is respectively connected to the other end of the resistor R9 and EMS_VDD to jointly form a first upper bridge arm. The base of the PNP transistor Q6 is connected to the other end of a resistor R19 to jointly form a first lower bridge arm. The emitter of the PNP transistor Q6 is respectively connected to the emitters of a PNP transistor Q7, the negative electrode of a zener diode D2, and one ends of a resistor R21 and a resistor R22. The positive electrode of the zener diode D2 and the other end of the resistor R22 are respectively grounded. The other end of the resistor R21 is externally connected to an acquisition module to feed back the driving current of the EMS electrode sheet to the acquisition module.

[0012] The base of the PNP transistor Q4 is respectively connected to one ends of a resistor R10 and a resistor R14. The collector of the PNP transistor Q4 is respectively connected to the other end of the resistor R10 and EMS_VDD to jointly form a second upper bridge arm. The base of the PNP transistor Q7 is connected to the other end of the resistor R20 to jointly form a second lower bridge arm.

[0013] In the process of constructing the H-bridge circuit, the first H-bridge driving circuit and the second H-bridge driving circuit in the present invention, the resistors R9, R10, R13, R14, R15, R18, R19, R20, R21, R22 and R23 are set, and their purpose is to limit current and provide a bias circuit for the triodes. The purpose of the zener diode D2 in the present invention is to provide a sampling protection circuit for the electric pulse EMS electrode sheet control circuit.

[0014] Preferably, the emitter of the PNP transistor Q3, the collector of the PNP transistor Q7 and one end of a fuse F1 are connected together to provide polarity one for the electrode sheet.

[0015] The emitter of the PNP transistor Q4, the collector of the PNP transistor Q6, one end of a resistor R18 and an output port B are connected, and one end of the resistor R18, the other end of the fuse F1 and an output port A are connected together to provide polarity two for the electrode sheet.

[0016] The purpose of the fuse F1 in this utility model is to protect the safety of the output circuit of the electrical pulse EMS electrode sheet control circuit.

[0017] The beneficial technical effects achieved by this utility model are as follows:

[0018] 1) This control circuit can cooperate with APP for remote control or local offline mode control;

[0019] 2) The control circuit mode is more finely divided and has a wider application;

[0020] 3) The H-bridge drive circuit of this control circuit is equipped with a protection circuit and a real-time feedback circuit, making it safer to use and having a longer service life. Description of the Drawings

[0021] Figure 1 is a schematic diagram of a control circuit for an electrical pulse EMS electrode sheet of this utility model;

[0022] Figure 2 is a schematic diagram of the composition of the first H-bridge drive circuit in a control circuit for an electrical pulse EMS electrode sheet of this utility model;

[0023] Figure 3 is a schematic diagram of the composition of the second H-bridge drive circuit in a control circuit for an electrical pulse EMS electrode sheet of this utility model

[0024] Figure 4 is a schematic diagram of the composition of the H-bridge circuit in a control circuit for an electrical pulse EMS electrode sheet of this utility model. Detailed Embodiment

[0025] The following further describes this utility model in combination with specific embodiments. The following embodiments are only used to more clearly illustrate the technical solutions of this utility model and cannot be used to limit the protection scope of this utility model.

[0026] The following further describes this utility model patent in combination with the drawings and embodiments. As Figure 1 shown, a control circuit for an electrical pulse EMS electrode sheet includes an EMS drive module and a collection module;

[0027] The EMS drive module drives the EMS electrode sheet in an H-bridge manner and collects the feedback current in real time;

[0028] The collection module is used to collect the supply voltage of the EMS drive module and the output current feedback information of the EMS drive module;

[0029] The EMS drive module includes an H-bridge circuit, a first H-bridge drive circuit, and a second H-bridge drive circuit; the first H-bridge drive circuit and the second H-bridge drive circuit are both used to drive the H-bridge circuit.

[0030] The first H-bridge drive circuit includes an NPN transistor Q5. One end of a pulse generator sends a pulse current through a resistor R15 to the base of the NPN transistor Q5 at input port A; the emitter of the NPN transistor Q5 is grounded to ensure the stable operation of the circuit; the current passing through the collector of the NPN transistor Q5 flows to the parallel-connected resistors R13 and R19 respectively, and enters the H-bridge circuit through the other ends of the resistors R13 and R19.

[0031] The second H-bridge drive circuit includes an NPN transistor Q8. One end of a pulse generator sends a pulse current through a resistor R23 to the base of the NPN transistor Q8 at input port B; the emitter of the NPN transistor Q8 is grounded to ensure the stable operation of the circuit; the current passing through the collector of the NPN transistor Q8 flows to the parallel-connected resistors R20 and R14 respectively, and enters the H-bridge circuit through the other ends of the resistors R14 and R20.

[0032] The H-bridge circuit is mainly composed of four PNP transistors Q3, Q4, Q6 and Q7; they are connected in an "H" shape with each other.

[0033] Among them, the PNP transistor Q3 is an important part of the first upper bridge arm (the specific connection method of this part is that the base of the PNP transistor Q3 is connected to one end of the resistors R13 and R9 respectively, and the collector of the PNP transistor Q3 is connected to the other end of the resistor R9 and EMS_VDD respectively to jointly form the first upper bridge arm);

[0034] The PNP transistor Q6 is an important part of the first lower bridge arm (the specific connection method of this part is that the base of the PNP transistor Q6 is connected to the other end of the resistor R19 to jointly form the first lower bridge arm);

[0035] The PNP transistor Q4 is an important part of the second upper bridge arm (the specific connection method of this part is that the base of the PNP transistor Q4 is connected to one end of the resistors R10 and R14 respectively, and the collector of the PNP transistor Q4 is connected to the other end of the resistor R10 and EMS_VDD respectively to jointly form the second upper bridge arm);

[0036] The PNP transistor Q7 is an important part of the second lower bridge arm (the specific connection method of this part is that the base of the PNP transistor Q7 is connected to the other end of the resistor R20 to jointly form the first lower bridge arm);

[0037] Connect the emitter of the PNP transistor Q6 to the emitter of the PNP transistor Q7, the negative electrode of the voltage stabilizing diode D2, one end of the resistor R21, and one end of the resistor R22 respectively. The positive electrode of the voltage stabilizing diode D2 and the other end of the resistor R22 are grounded respectively to provide a sampling protection circuit for the electro-pulse EMS electrode sheet control circuit;

[0038] The other end of the resistor R21 is externally connected to the acquisition module to feed back the drive current of the EMS electrode sheet to the acquisition module.

[0039] In the process of constructing the H-bridge circuit, the first H-bridge drive circuit, and the second H-bridge drive circuit in the present utility model, the resistors R9, R10, R13, R14, R15, R18, R19, R20, R21, R22, and R23 are set, and their purpose is to be used for current limiting and providing a bias circuit for the triodes.

[0040] Connect the emitter of the PNP transistor Q3 to the collector of the PNP transistor Q7 and one end of the fuse F1 together to provide polarity one for the electrode sheet;

[0041] Connect the emitter of the PNP transistor Q4 to the collector of the PNP transistor Q6, one end of the resistor R18, and the output port B, and one end of the resistor R18 is connected to the other end of the fuse F1 and the output port A to provide polarity two for the electrode sheet together.

[0042] The purpose of the fuse F1 in the present utility model is to protect the safety of the output circuit of the electro-pulse EMS electrode sheet control circuit.

[0043] Embodiment 1: In this embodiment, the output port A and the output port B are respectively connected to two electrode sheets. The control circuit of the EMS electrode sheet inputs the PWM modulation signal to the input port A or B end through the training mode and intensity value set by the APP or the button, and outputs it through the two electrode sheets. The frequency of the low-frequency signal output between the polarity one and the polarity two of the two electrode sheets is 4 - 60HZ; the intensity value is controlled by changing the duty cycle of the PWM waveform;

[0044] When the input port A is 1 and B is 0, the data flow direction in the control circuit of the EMS electrode sheet is: PNP transistor Q3 → fuse F1 → (output port A →) resistor R18 → (output port B →) PNP transistor Q6;

[0045] When the input port A is 0 and B is 1, the data flow direction in the control circuit of the EMS electrode sheet is: PNP transistor Q4 → (output port B →) resistor R18 → (output port A →) fuse F1 → PNP transistor Q7.

[0046] The present utility model has been disclosed with preferred embodiments above, but it is not intended to limit the present utility model. Any technical solutions obtained by adopting equivalent replacement or equivalent transformation shall fall within the protection scope of the present utility model.

Claims

1. An electric pulse EMS electrode sheet control circuit, characterized in that: Including EMS driver module and acquisition module; The EMS driving module drives the EMS electrode sheet using an H-bridge method and collects feedback current in real time; The acquisition module is used to collect the power supply voltage of the EMS drive module and the output current feedback information of the EMS drive module; The EMS driving module includes an H-bridge circuit, a first H-bridge driving circuit and a second H-bridge driving circuit; the first H-bridge driving circuit and the second H-bridge driving circuit are both used to drive the H-bridge circuit.

2. The electric pulse EMS electrode sheet control circuit according to claim 1, characterized in that: The first H-bridge driving circuit includes an NPN transistor Q5, the base of which is connected to one end of the pulse generator through a resistor R15; the collector of the NPN transistor Q5 is respectively connected to one end of a resistor R13 and a resistor R19, and the other ends of the resistor R13 and the resistor R19 are both connected to the H-bridge circuit; the emitter of the NPN transistor Q5 is grounded.

3. The electric pulse EMS electrode sheet control circuit according to claim 2, characterized in that: The second H-bridge driving circuit includes an NPN transistor Q8, the base of which is connected to the other end of the pulse generator through a resistor R23; the collector of the NPN transistor Q8 is respectively connected to one end of a resistor R20 and a resistor R14, and the other ends of the resistor R20 and the resistor R14 are both connected to the H-bridge circuit; the emitter of the NPN transistor Q8 is grounded.

4. The electric pulse EMS electrode sheet control circuit according to claim 3, characterized in that: The H-bridge circuit includes Q3, Q4, Q6 and Q7, and Q3, Q4, Q6 and Q7 are all PNP transistors; the base of the PNP transistor Q3 is respectively connected to the resistor R13 and one end of the resistor R9, and the collector of the PNP transistor Q3 is respectively connected to the other end of the resistor R9 and EMS_VDD to form a first upper bridge arm; the base of the PNP transistor Q6 is connected to the other end of the resistor R19 to form a first lower bridge arm, and the emitter of the PNP transistor Q6 is respectively connected to the emitter of the PNP transistor Q7, the cathode of the voltage zener diode D2, the resistor R21 and one end of the resistor R22, the anode of the voltage zener diode D2 and the other end of the resistor R22 are respectively grounded, and the other end of the resistor R21 is externally connected to the acquisition module to feed back the driving current of the EMS electrode sheet to the acquisition module; The base of the PNP transistor Q4 is connected to one end of the resistor R10 and the resistor R14 respectively, and the collector of the PNP transistor Q4 is connected to the other end of the resistor R10 and EMS_VDD respectively to form a second upper bridge arm; the base of the PNP transistor Q7 is connected to the other end of the resistor R20 to form a second lower bridge arm.

5. The electric pulse EMS electrode sheet control circuit according to claim 4, characterized in that: The emitter of the PNP transistor Q3 is connected to the collector of the PNP transistor Q7 and one end of the fuse F1 to provide polarity one for the electrode sheet; The emitter of the PNP transistor Q4 is connected to the collector of the PNP transistor Q6, one end of the resistor R18 and the output port B, and one end of the resistor R18 is connected to the other end of the fuse F1 and the output port A, which together provide polarity two for the electrode sheet.

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