CN116059534A - Fatigue rehabilitation equipment based on vibration and electrical stimulation of meridian points - Google Patents

Abstract

The invention relates to the technical field of rehabilitation instruments, and proposes a fatigue rehabilitation instrument based on vibration and electric stimulation of meridian points, including a main control unit and an electric stimulation circuit, and the electric stimulation circuit includes a triode Q1, a triode Q2, a triode Q3, a field effect transistor Q4, and a triode The base of Q1 is connected to the main control unit, the emitter of transistor Q1 is grounded, the collector of transistor Q1 is connected to the collector of transistor Q3, the base of transistor Q2 is connected to the 65V power supply, the emitter of transistor Q2 is grounded, and the collector of transistor Q2 is connected to 65V power supply, the base of the transistor Q3 is connected to the gate of the field effect transistor Q4 through the capacitor C3, the emitter of the transistor Q3 is grounded, the collector of the transistor Q3 is connected to the 65V power supply through the resistor R4, and the collector of the transistor Q3 is connected to the gate of the field effect transistor Q4 The gate and the drain of the field effect transistor Q4 are connected to a 65V power supply, and the source of the field effect transistor Q4 is connected to an electrode. Through the above technical solution, the problems of complex circuit structure and poor circuit stability of the electric stimulation rehabilitation instrument in the prior art are solved.

Description

Fatigue rehabilitation equipment based on vibration and electrical stimulation of meridians and acupoints

technical field

The invention relates to the technical field of electrical stimulation rehabilitation equipment, in particular to a fatigue rehabilitation equipment based on vibration and electrical stimulation of meridian and acupuncture points.

Background technique

With the diversification of non-combat military operations tasks and the increasing difficulty and intensity of actual combat military training, and the emergence of new combat modes of special operations and individual combat, the physical requirements for officers and soldiers continue to increase. High-intensity military training can easily produce training fatigue, which affects the improvement of the army's combat effectiveness. At present, drugs are still the main treatment for training fatigue in modern medicine, such as anti-fatigue drugs, anti-anxiety drugs, non-steroidal anti-inflammatory drugs, etc. Applicability and compliance.

In clinical front-line work, comprehensive use of traditional Chinese medicine such as acupuncture, electroacupuncture, and massage can significantly relieve the fatigue of officers and soldiers during training. However, traditional Chinese acupuncture is percutaneously invasive, time-consuming and harmful to operators. Technical requirements are difficult to be mastered by officers and soldiers and independently operated and used, which in turn affects the exertion and popularization of traditional Chinese medicine's unique advantages in serving the army in fatigue training. With the research on the rehabilitation of motor function in the medical field, electrical stimulation of meridians and acupoints can quickly relieve fatigue during training. Stimulating meridians and acupoints with low-frequency current pulses can induce the relief of motor nerves.

The electrical stimulation rehabilitation instrument can be adjusted to output different electric pulse intensities for different training fatigue officers and soldiers during work. The traditional electrical stimulation rehabilitation instrument works as follows: keep the pulse-driven power supply voltage constant and at the highest level, Adjust the size and amplitude of the input pulse, thereby changing the size of the output pulse voltage to achieve the purpose of adjusting the pulse intensity. The circuit structure of this control method is complicated, and the stability of the circuit is poor.

Contents of the invention

The invention proposes a fatigue rehabilitation instrument based on vibration and electric stimulation of meridian points, which solves the problems of complex circuit structure and poor circuit stability of the electric stimulation rehabilitation instrument in the prior art.

Technical scheme of the present invention is as follows:

A fatigue rehabilitation instrument based on vibration and electrical stimulation of meridian points, including electrodes, the electrodes are used to contact with the human body, and also include a main control unit and an electrical stimulation circuit, the electrical stimulation circuit is connected to the main control unit, and the electrical stimulation The circuit includes resistor R1, NPN transistor Q1, voltage regulator D2, resistor R2, resistor R3, resistor R4, NPN transistor Q2, NPN transistor Q3, resistor R5, capacitor C3, N-channel FET Q4, resistor R6, resistor R7, Digital potentiometer U1 and Zener tube D3,

The base of the NPN transistor Q1 is connected to the main control unit through the resistor R1, the emitter of the NPN transistor Q1 is grounded, the collector of the NPN transistor Q1 is connected to the collector of the NPN transistor Q3, and the The base of the NPN transistor Q2 is connected to the 65V power supply through the resistor R2, the base of the NPN transistor Q2 is connected to the cathode of the voltage regulator D2, the anode of the voltage regulator D2 is grounded, and the The reference electrode is connected to the base of the NPN transistor Q2, the emitter of the NPN transistor Q2 is connected to the first end of the resistor R5, the second end of the resistor R5 is grounded, and the collector of the NPN transistor Q2 passes through the The resistor R3 is connected to a 65V power supply, the base of the NPN transistor Q3 is connected to the gate of the N-channel field effect transistor Q4 through the capacitor C3, and the emitter of the NPN transistor Q3 is connected to the first end of the resistor R5 , the collector of the NPN transistor Q3 is connected to a 65V power supply through the resistor R4, the collector of the NPN transistor Q3 is connected to the gate of the N-channel field effect transistor Q4, and the drain of the N-channel field effect transistor Q4 connected to a 65V power supply, the source of the N-channel field effect transistor Q4 is connected to the electrode,

The serial clock input terminal of the digital potentiometer U1, the serial data input terminal of the digital potentiometer U1 and the selection terminal of the digital potentiometer U1 are all connected to the main control unit, and the digital potentiometer U1 The first output end of the digital potentiometer U1 is connected to the ground through the resistor R7, the second output end of the digital potentiometer U1 is connected to the base of the NPN transistor Q3, and the third output end of the digital potentiometer U1 is connected through the resistor R6 The source of the N-channel field effect transistor Q4, the third output end of the digital potentiometer U1 is connected to the cathode of the voltage regulator transistor D3, and the anode of the voltage regulator transistor D3 is grounded.

Further, the present invention also includes a multi-channel output circuit, which includes a resistor R8, a resistor R9, an NPN transistor Q5, a resistor R10, a resistor R11, a PNP transistor Q7, an NPN transistor Q8, a resistor R12, a resistor R13, and an NPN transistor. Transistor Q6, resistor R14, resistor R15, PNP transistor Q10, NPN transistor Q9 and resistor R16,

The base of the NPN transistor Q5 is connected to the main control unit through the resistor R8, the first end of the resistor R9 is connected to the main control unit, and the second end of the resistor R9 is connected to the NPN transistor Q9. base, the emitter of the NPN transistor Q5 is grounded, the collector of the NPN transistor Q5 is connected to the base of the PNP transistor Q7 through the resistor R10, and the base of the PNP transistor Q7 is connected through the resistor R11 The collector of the PNP transistor Q7, the collector of the PNP transistor Q7 is connected to the source of the N-channel field effect transistor Q4, the collector of the PNP transistor Q7 is connected to the first channel electrode J1, and the PNP transistor Q7 The collector of the NPN transistor Q8 is connected to the collector of the NPN transistor Q8, the base of the NPN transistor Q8 is connected to the main control unit through the resistor R13, and the emitter of the NPN transistor Q8 is connected to the first end of the resistor R16 , the second end of the resistor R16 is grounded,

The base of the NPN transistor Q6 is connected to the main control unit through the resistor R12, the emitter of the NPN transistor Q6 is grounded, and the collector of the NPN transistor Q6 is connected to the PNP transistor Q10 through the resistor R14. base, the base of the PNP transistor Q10 is connected to the emitter of the PNP transistor Q10 through the resistor R15, the emitter of the PNP transistor Q10 is connected to the source of the N-channel field effect transistor Q4, and the PNP transistor The collector of Q10 is connected to the second channel electrode J2, the collector of the PNP transistor Q10 is connected to the collector of the NPN transistor Q9, and the emitter of the NPN transistor Q9 is connected to the first end of the resistor R16.

Further, the present invention also includes a sampling circuit, the sampling circuit includes a resistor R17, a resistor R18, an operational amplifier U2, a resistor R19, a resistor R20 and a resistor R21, and the non-inverting input terminal of the operational amplifier U2 is connected to the The first end of the resistor R16, the non-inverting input terminal of the operational amplifier U2 is grounded through the resistor R18, the inverting input terminal of the operational amplifier U2 is grounded through the resistor R20, and the output terminal of the operational amplifier U2 is grounded through the resistor R20. The resistor R19 is connected to the inverting input terminal of the operational amplifier U2, and the output terminal of the operational amplifier U2 is connected to the main control unit through the resistor R21.

Further, the present invention also includes a myoelectric signal acquisition circuit, which includes a surface electrode J3, a resistor R24, a resistor R25, an operational amplifier U4, and a resistor R26, and the first end of the surface electrode J3 passes through the Resistor R24 is connected to the inverting input terminal of the operational amplifier U4, the second end of the surface electrode J3 is connected to the non-inverting input terminal of the operational amplifier U4 through the resistor R25, and the output terminal of the operational amplifier U4 is passed through the The resistor R26 is connected to the inverting input terminal of the operational amplifier U4, and the output terminal of the operational amplifier U4 is connected to the main control unit.

Further, the myoelectric signal acquisition circuit described in the present invention also includes resistor R27, resistor R28, capacitor C11, capacitor C10, operational amplifier U5, capacitor C12, capacitor C13, resistor R30, resistor R29 and operational amplifier U6, and the resistor R27 The first end of the operational amplifier U4 is connected to the output terminal of the operational amplifier, the second end of the resistor R27 is connected to the non-inverting input terminal of the operational amplifier U5 through the resistance R28, and the non-inverting input terminal of the operational amplifier U5 is connected to the non-inverting input terminal of the operational amplifier U5 through the The capacitor C11 is grounded, the inverting input end of the operational amplifier U5 is connected to the second end of the resistor R27 through the capacitor C10, and the output end of the operational amplifier U5 is connected to the inverting input end of the operational amplifier U5, so The output end of the operational amplifier U5 is connected to the first end of the capacitor C13 through the capacitor C12, the second end of the capacitor C13 is connected to the non-inverting input terminal of the operational amplifier U6, and the non-inverting input terminal of the operational amplifier U6 Grounded through the resistor R29, the inverting input terminal of the operational amplifier U6 is connected to the first end of the capacitor C13 through the resistor R30, and the output terminal of the operational amplifier U6 is connected to the inverting input of the operational amplifier U6 terminal, and the output terminal of the operational amplifier U6 is connected to the main control unit.

Further, the present invention also includes a massage circuit, which includes a switch SW1, a diode D4, an inductor L2, a governor U3, a motor M1, a resistor R22, a rheostat RP1, a resistor R23, and a diode D5. The first switch SW1 One end is connected to a 12V power supply, the second end of the switch SW1 is connected to the anode of the diode D4, the cathode of the diode D4 is connected to the power supply end of the governor U3 through the inductor L2, and the governor U3 The power supply terminal of the motor M1 is connected to the first terminal of the motor M1, the second terminal of the motor M1 is connected to the speed control terminal of the governor U3, and the second terminal of the motor M1 is connected to the motor M1 through the resistor R23. The anode of the diode D5, the cathode of the diode D5 is connected to the torque control end of the governor U3, the first end of the resistor R22 is connected to the first end of the motor M1, and the second end of the resistor R22 is connected to The first end of the varistor RP1 is connected to the wiper end of the varistor RP1 , and the second end of the varistor RP1 is connected to the anode of the diode D5 .

Working principle of the present invention and beneficial effect are:

In the present invention, the main control unit outputs control instructions to the input end of the electric stimulation circuit, and the electric stimulation circuit generates electric stimulation pulse signals to be added to the electrodes, and the electrodes are fixed on the meridian points of officers and soldiers, and the electric stimulation pulse signals sent from the electrodes are used to stimulate the Officers and soldiers for treatment.

Specifically, the working principle of the electric stimulation circuit is as follows: when it is necessary to treat officers and soldiers, the main control unit outputs a PWM control signal to the base of the NPN transistor Q1, and when the PWM control signal is at a high level, the NPN transistor Q1 is turned on, and the NPN transistor The collector of Q1 is at low level, N-channel FET Q4 is off, and there is no electrical signal on the electrode at this time; when the PWM signal is low, NPN transistor Q1 is off, N-channel FET Q4 is on, and the 65V power supply passes through The N-channel field effect transistor Q4 is added to the electrode, and the electrode generates an electrical signal. Under the action of the PWM control signal, the electrode will generate an electrical pulse signal that changes with the PWM control signal. The signal is used for rehabilitation of officers and soldiers. For officers and soldiers with different degrees of training fatigue, the pulse strengths of the required electric pulse signals are different. The present invention can adjust the potentials of the first output terminal, the second output terminal and the third output terminal of the digital potentiometer U1 through the main control unit. By adjusting the output value of the third output terminal of the digital potentiometer U1, the source voltage of the N-channel field effect transistor Q4 can be changed, thereby changing the amplitude of the electric pulse signal on the electrode, and achieving different output for officers and soldiers who are fatigued in different training. The amplitude of the electric pulse signal, the control method is constant voltage control.

In addition, the present invention can also change the pulse intensity by adjusting the output value of the second output terminal of the digital potentiometer U1. When it is necessary to increase the pulse intensity of the electric pulse signal on the electrode, the output potential of the second output terminal of the digital potentiometer U1 is increased, and the base voltage of the NPN transistor Q3 is increased, and the NPN transistor Q2 and the NPN transistor Q3 constitute a differential amplifier circuit, NPN The base voltage of the transistor Q2 remains unchanged. When the base voltage of the NPN transistor Q3 rises, it is amplified by the differential amplifier circuit, and the collector voltage of the NPN transistor Q3 rises, that is, the gate voltage of the N-channel field effect transistor Q4 also increases. Therefore, the drain current of N-channel field effect transistor Q4 rises, and the magnitude of the pulse output current is adjusted under the condition that the magnitude of the input pulse remains unchanged to achieve the purpose of adjusting the pulse strength. The control method is constant current control .

Therefore, compared with the working mode of the traditional electrical stimulation rehabilitation instrument, the circuit structure of the present invention is simple and stable; not only can the pulse intensity be controlled by constant voltage, but also by constant current control, and the two control modes can adapt to More officers and soldiers.

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Fig. 1 is the circuit diagram of electrical stimulation circuit among the present invention;

Fig. 2 is the circuit diagram of multi-channel output circuit among the present invention;

Fig. 3 is the circuit diagram of sampling circuit among the present invention;

Fig. 4 is the circuit diagram of myoelectric signal acquisition circuit among the present invention;

Fig. 5 is the circuit diagram of filtering circuit among the present invention;

Fig. 6 is a circuit diagram of the massage circuit in the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts all involve the protection scope of the present invention.

Example 1

As shown in Figure 1, this embodiment proposes a fatigue rehabilitation instrument based on vibration and electrical stimulation of meridian points, including electrodes, which are used to contact the human body, and also include a main control unit and an electrical stimulation circuit, and the electrical stimulation circuit is connected to the main control unit , the electrical stimulation circuit includes resistor R1, NPN transistor Q1, voltage regulator D2, resistor R2, resistor R3, resistor R4, NPN transistor Q2, NPN transistor Q3, resistor R5, capacitor C3, N-channel FET Q4, resistor R6, Resistor R7, digital potentiometer U1 and regulator D3, the base of NPN transistor Q1 is connected to the main control unit through resistor R1, the emitter of NPN transistor Q1 is grounded, the collector of NPN transistor Q1 is connected to the collector of NPN transistor Q3, NPN The base of the transistor Q2 is connected to the 65V power supply through the resistor R2, the base of the NPN transistor Q2 is connected to the cathode of the voltage regulator D2, the anode of the voltage regulator D2 is grounded, and the reference electrode of the voltage regulator D2 is connected to the base of the NPN transistor Q2, NPN The emitter of the transistor Q2 is connected to the first end of the resistor R5, the second end of the resistor R5 is grounded, the collector of the NPN transistor Q2 is connected to the 65V power supply through the resistor R3, and the base of the NPN transistor Q3 is connected to the N-channel field effect transistor Q4 through the capacitor C3 The gate of the NPN transistor Q3 is connected to the first end of the resistor R5, the collector of the NPN transistor Q3 is connected to the 65V power supply through the resistor R4, the collector of the NPN transistor Q3 is connected to the gate of the N-channel field effect transistor Q4, and the N-channel The drain of the FET Q4 is connected to the 65V power supply, the source of the N-channel FET Q4 is connected to the electrode, the serial clock input terminal (SCLK pin) of the digital potentiometer U1, and the serial data input terminal of the digital potentiometer U1 ( DIN pin) and the selection terminal (CS# pin) of digital potentiometer U1 are connected to the main control unit, the first output terminal of digital potentiometer U1 is grounded through resistor R7, and the second output terminal of digital potentiometer U1 is connected to NPN The base of the transistor Q3, the third output terminal of the digital potentiometer U1 is connected to the source of the N-channel FET Q4 through the resistor R6, the third output terminal of the digital potentiometer U1 is connected to the cathode of the voltage regulator D3, and the voltage regulator D3 The anode is grounded.

In this embodiment, the main control unit outputs control commands to the input end of the electric stimulation circuit, and the electric stimulation circuit generates electric stimulation pulse signals to be added to the electrodes, and the electrodes are fixed on the meridian points of officers and soldiers, and the electric stimulation pulse signals sent from the electrodes are used for Treat officers and soldiers.

Specifically, the working principle of the electric stimulation circuit is as follows: when it is necessary to treat officers and soldiers, the main control unit outputs a PWM control signal to the base of the NPN transistor Q1, and when the PWM control signal is at a high level, the NPN transistor Q1 is turned on, and the NPN transistor The collector of Q1 is at low level, therefore, the gate of N-channel FET Q4 is a low-level signal, N-channel FET Q4 is cut off, and the source of N-channel FET Q4 is extremely low. At this time, there is no Electrical signal; when the PWM signal is low level, the NPN transistor Q1 is cut off, the collector of the NPN transistor Q1 changes from a low level signal to a high level, the N-channel FET Q4 is turned on, and the 65V power supply passes through the N-channel FET After Q4 is added to the electrode, the electrode generates an electrical signal. Under the action of the PWM control signal, the electrode will generate an electrical pulse signal that changes with the PWM control signal. The signal is used to treat officers and soldiers.

For officers and soldiers who are fatigued in different operations, the pulse strengths of the required electric pulse signals are different. In this embodiment, the potentials of the first output terminal, the second output terminal and the third output terminal of the digital potentiometer U1 can be adjusted through the main control unit. Size, by adjusting the output value of the third output terminal of the digital potentiometer U1, the source voltage of the N-channel field effect transistor Q4 can be changed, thereby changing the amplitude of the pulse signal on the electrode, and realizing the output of different amplitudes for different officers and soldiers. Electric pulse signal, the realization method is constant voltage control.

In addition, in this embodiment, the pulse strength can also be changed by adjusting the output value of the second output terminal of the digital potentiometer U1. When it is necessary to increase the pulse intensity of the electric pulse signal on the electrode, the output potential of the second output terminal of the digital potentiometer U1 is increased, the voltage of the NPN transistor Q3 is increased, and the current is also increased, and the NPN transistor Q2 and the NPN transistor Q3 form a differential amplifier. In the circuit, the base voltage of NPN transistor Q2 remains unchanged, and the voltage regulator D2 plays the role of voltage stabilization. The voltage regulator D2 uses a TL431 voltage regulator chip. When the base voltage of NPN transistor Q3 rises, the After the circuit is amplified, the collector voltage of the NPN transistor Q3 rises, that is, the gate voltage of the N-channel field effect transistor Q4 also rises. Therefore, when the gate of the N-channel field effect transistor Q4 rises, the N-channel field effect transistor Q4 The drain current of Q4 rises. In this way, when the size and amplitude of the input pulse remain unchanged, the size of the pulse output current is adjusted to achieve the purpose of adjusting the pulse intensity. The realization method is constant current control.

Among them, the capacitor C3 is a compensation capacitor, which reduces the self-excitation of the pulse intensity during the adjustment process and improves the stability and reliability of the circuit; both the voltage regulator tube D1 and the voltage regulator tube D3 play the role of voltage regulation; capacitors C1, Inductor L1 and capacitor C2 form a π-type filter to filter out ripples in the power supply.

Therefore, the circuit structure of this embodiment is simple and stable; this embodiment can not only control the pulse intensity with constant voltage, but also with constant current control, which can adapt to more officers and soldiers.

As shown in Figure 2, this embodiment also includes a multi-channel output circuit, the multi-channel output circuit includes resistor R8, resistor R9, NPN transistor Q5, resistor R10, resistor R11, PNP transistor Q7, NPN transistor Q8, resistor R12, resistor R13, NPN transistor Q6, resistor R14, resistor R15, PNP transistor Q10, NPN transistor Q9 and resistor R16, the base of NPN transistor Q5 is connected to the first output terminal (P1.1) of the main control unit through resistor R8, the resistor R9 The first terminal is connected to the first output terminal (P1.1) of the main control unit, the second terminal of the resistor R9 is connected to the base of the NPN transistor Q9, the emitter of the NPN transistor Q5 is grounded, and the collector of the NPN transistor Q5 is connected through the resistor R10 The base of the PNP transistor Q7, the base of the PNP transistor Q7 is connected to the collector of the PNP transistor Q7 through the resistor R11, the collector of the PNP transistor Q7 is connected to the source of the N-channel field effect transistor Q4, and the collector of the PNP transistor Q7 is connected to the first Channel electrode J1, the collector of PNP transistor Q7 is connected to the collector of NPN transistor Q8, the base of NPN transistor Q8 is connected to the second output terminal (P1.2) of the main control unit through resistor R13, and the emitter of NPN transistor Q8 is connected to the resistor The first end of R16, the second end of resistor R16 are grounded, the base of NPN transistor Q6 is connected to the second output terminal (P1.2) of the main control unit through resistor R12, the emitter of NPN transistor Q6 is grounded, and the base of NPN transistor Q6 The collector is connected to the base of the PNP transistor Q10 through the resistor R14, the base of the PNP transistor Q10 is connected to the emitter of the PNP transistor Q10 through the resistor R15, the emitter of the PNP transistor Q10 is connected to the source of the N-channel field effect transistor Q4, and the source of the PNP transistor Q10 The collector is connected to the second channel electrode J2, the collector of the PNP transistor Q10 is connected to the collector of the NPN transistor Q9, and the emitter of the NPN transistor Q9 is connected to the first end of the resistor R16.

When treating officers and soldiers, there may be multiple officers and soldiers who need rehabilitation treatment at the same time. At this time, if each officer and soldier is equipped with a rehabilitation instrument, the investment cost will be very high. Therefore, this implementation In the example, a multi-channel output circuit is added. According to actual needs, the multi-channel output circuit can be divided into multiple channels, which can provide rehabilitation treatment for multiple officers and soldiers at the same time.

In this embodiment, taking two separate channels as an example, when there are two officers and soldiers performing treatment at the same time, the main control unit outputs a high-level signal and adds them to the bases of NPN transistor Q5 and NPN transistor Q6 respectively, and NPN transistor Q5 and NPN transistor Q5 Both NPN transistors Q6 are turned on. The base voltage of the PNP transistor Q7 is lower than the emitter voltage of the PNP transistor Q7, the PNP transistor Q7 is turned on, and the PNP transistor Q10 is also turned on in the same way. The electric pulse signal can treat two officers and soldiers at the same time.

NPN transistor Q8, NPN transistor Q9 and resistor R16 form a current detection circuit. By collecting the voltage across the resistor R16 and sending it to the main control unit, it is judged whether the current flowing through the electrodes is normal.

As shown in Figure 3, this embodiment also includes a sampling circuit, the sampling circuit includes a resistor R17, a resistor R18, an operational amplifier U2, a resistor R19, a resistor R20 and a resistor R21, and the non-inverting input terminal of the operational amplifier U2 is connected to the resistor R16 through the resistor R17 The first end of the op amp U2 is grounded through the resistor R18, the inverting input of the op amp U2 is grounded through the resistor R20, and the output of the op amp U2 is connected to the inverting input of the op amp U2 through the resistor R19. The output terminal of amplifier U2 is connected to the main control unit through the resistor R21.

In this embodiment, the maximum voltage applied to the electrodes can reach 65V, but the current on the electrodes is relatively small. Therefore, the main control unit cannot directly and effectively identify the voltage across the resistor R16. For this reason, this embodiment adds an amplifying circuit. The voltage signal at both ends of the resistor R16 is divided by the resistor R17 and the resistor R18 and then added to the non-inverting input terminal of the operational amplifier U2. The operational amplifier U2 constitutes an amplifying circuit, and finally the amplified voltage signal Send it to the main control unit, so as to effectively judge the magnitude of the current flowing through the electrode.

As shown in Figure 4, the present embodiment also includes a myoelectric signal acquisition circuit, the myoelectric signal acquisition circuit includes a surface electrode J3, a resistor R24, a resistor R25, an operational amplifier U4, and a resistor R26, and the first end of the surface electrode J3 passes through a resistor R24 Connect the inverting input terminal of the operational amplifier U4, the second terminal of the surface electrode J3 is connected to the non-inverting input terminal of the operational amplifier U4 through the resistor R25, the output terminal of the operational amplifier U4 is connected to the inverting input terminal of the operational amplifier U4 through the resistor R26, the operational amplifier The output end of U4 is connected to the main control unit.

In order to achieve the best therapeutic effect for officers and soldiers, in this embodiment, the amplitude characteristics of the human body surface electromyography signal are collected, and the main control unit is used to control the digital potentiometer U1 to output a kind of signal with the same amplitude characteristic as the human body surface electromyography signal. The electric pulse signal is applied to the officers and soldiers, so as to realize the control of the movement state of the officers and soldiers by using the posture information of the human body surface EMG signal.

In this embodiment, the amplitude characteristics of the human surface electromyographic signal are collected by the electromyographic signal acquisition circuit. Specifically, the working principle of the electromyographic signal acquisition circuit is: the surface electrode J3 is used to pick up the human body surface electromyographic signal, and the electric signal is relatively weak , which cannot be directly recognized by the main control unit, so it needs to be amplified. The operational amplifier U4 constitutes a differential amplifier circuit. The differential amplifier circuit can effectively amplify useful differential-mode signals and suppress useless common-mode signals. Finally, the The amplified differential mode signal is sent to the main control unit. The main control unit changes the output potential value of the digital potentiometer U1 according to the amplitude characteristics of the human body surface electromyographic signal, thereby changing the pulse intensity of the electric pulse signal applied to the electrodes.

As shown in Figure 5, the myoelectric signal acquisition circuit in this embodiment also includes a resistor R27, a resistor R28, a capacitor C11, a capacitor C10, an operational amplifier U5, a capacitor C12, a capacitor C13, a resistor R30, a resistor R29, and an operational amplifier U6. The first end of R27 is connected to the output terminal of op amp U4, the second end of resistor R27 is connected to the non-inverting input end of op amp U5 through resistor R28, the non-inverting input end of op amp U5 is grounded through capacitor C11, and the inverting input of op amp U5 The terminal is connected to the second terminal of the resistor R27 through the capacitor C10, the output terminal of the operational amplifier U5 is connected to the inverting input terminal of the operational amplifier U5, the output terminal of the operational amplifier U5 is connected to the first terminal of the capacitor C13 through the capacitor C12, and the second terminal of the capacitor C13 The terminal is connected to the non-inverting input terminal of the operational amplifier U6, the non-inverting input terminal of the operational amplifier U6 is grounded through the resistor R29, the inverting input terminal of the operational amplifier U6 is connected to the first end of the capacitor C13 through the resistor R30, and the output terminal of the operational amplifier U6 is connected to the operational amplifier The inverting input terminal of U6 and the output terminal of the operational amplifier U6 are connected to the main control unit.

Although the differential amplifier circuit composed of operational amplifier U4 can suppress some interference signals in the human body surface electromyographic signal, there are still a large number of interference signals that will enter the main control unit. If these interference signals are not filtered out, it will affect the reliability of the rehabilitation instrument. Sex, thereby affecting the healing effect on officers and soldiers. Therefore, in this embodiment, a filter circuit is added.

Among them, resistor R27, resistor R28, capacitor C11, capacitor C10 and operational amplifier U5 form a low-pass filter circuit for filtering high-frequency clutter signals in the signal; capacitor C12, capacitor C13, resistor R30, resistor R29 and operational amplifier U6 constitutes a high-pass filter circuit for filtering out noise signals in the signal. The combination of the low-pass filter circuit and the high-pass filter circuit forms a band-pass filter circuit, which has a good filtering effect, and finally sends the filtered signal to the main control unit.

As shown in Figure 6, a massage circuit is also included in this embodiment, and the massage circuit includes a switch SW1, a diode D4, an inductor L2, a governor U3, a motor M1, a resistor R22, a rheostat RP1, a resistor R23 and a diode D5, and the switch SW1 The first end is connected to the 12V power supply, the second end of the switch SW1 is connected to the anode of the diode D4, the cathode of the diode D4 is connected to the power supply terminal (VCC pin) of the governor U3 through the inductor L2, and the power supply terminal of the governor U3 (VCC pin) Pin) is connected to the first end of the motor M1, the second end of the motor M1 is connected to the speed control terminal (MOTOR pin) of the governor U3, the second end of the motor M1 is connected to the anode of the diode D5 through the resistor R23, and the anode of the diode D5 The cathode is connected to the torque control terminal (RT pin) of the governor U3, the first terminal of the resistor R22 is connected to the first terminal of the motor M1, the second terminal of the resistor R22 is connected to the first terminal of the rheostat RP1, and the first terminal of the rheostat RP1 The sliding end of the rheostat RP1 is connected, and the second end of the rheostat RP1 is connected to the anode of the diode D5.

In this embodiment, in addition to electrical stimulation therapy, it also includes massage therapy. The massage circuit is used to realize the massage function. The motor M1 is a miniature low-speed DC motor. When the motor M1 is running, it is connected to the eccentric wheel structure, thereby generating the function of vibration massage. When it is necessary to massage the officers and soldiers, press the switch SW1, the motor M1 is powered on, and the governor U3 is a DC motor speed regulating chip to achieve the effect of adjusting the speed of vibration. By adjusting the resistance value of the rheostat RP1, the speed of the motor M1 can be realized. adjustment.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention within.

Claims (6)

1. A fatigue rehabilitation instrument based on vibration and electrical stimulation of meridian points, including electrodes, which are used to contact the human body, and are characterized in that they also include a main control unit and an electrical stimulation circuit, and the electrical stimulation circuit is connected to the main control unit. unit, the electrical stimulation circuit includes a resistor R1, an NPN transistor Q1, a voltage regulator D2, a resistor R2, a resistor R3, a resistor R4, an NPN transistor Q2, an NPN transistor Q3, a resistor R5, a capacitor C3, an N-channel field effect transistor Q4, Resistor R6, resistor R7, digital potentiometer U1 and voltage regulator tube D3, The base of the NPN transistor Q1 is connected to the main control unit through the resistor R1, the emitter of the NPN transistor Q1 is grounded, the collector of the NPN transistor Q1 is connected to the collector of the NPN transistor Q3, and the The base of the NPN transistor Q2 is connected to the 65V power supply through the resistor R2, the base of the NPN transistor Q2 is connected to the cathode of the voltage regulator D2, the anode of the voltage regulator D2 is grounded, and the The reference electrode is connected to the base of the NPN transistor Q2, the emitter of the NPN transistor Q2 is connected to the first end of the resistor R5, the second end of the resistor R5 is grounded, and the collector of the NPN transistor Q2 passes through the The resistor R3 is connected to a 65V power supply, the base of the NPN transistor Q3 is connected to the gate of the N-channel field effect transistor Q4 through the capacitor C3, and the emitter of the NPN transistor Q3 is connected to the first end of the resistor R5 , the collector of the NPN transistor Q3 is connected to a 65V power supply through the resistor R4, the collector of the NPN transistor Q3 is connected to the gate of the N-channel field effect transistor Q4, and the drain of the N-channel field effect transistor Q4 connected to a 65V power supply, the source of the N-channel field effect transistor Q4 is connected to the electrode, The serial clock input terminal of the digital potentiometer U1, the serial data input terminal of the digital potentiometer U1 and the selection terminal of the digital potentiometer U1 are all connected to the main control unit, and the digital potentiometer U1 The first output end of the digital potentiometer U1 is connected to the ground through the resistor R7, the second output end of the digital potentiometer U1 is connected to the base of the NPN transistor Q3, and the third output end of the digital potentiometer U1 is connected through the resistor R6 The source of the N-channel field effect transistor Q4, the third output end of the digital potentiometer U1 is connected to the cathode of the voltage regulator transistor D3, and the anode of the voltage regulator transistor D3 is grounded. 2. The fatigue rehabilitation instrument based on vibration and electrical stimulation of meridian points according to claim 1, characterized in that it also includes a multi-channel output circuit, and the multi-channel output circuit includes a resistor R8, a resistor R9, an NPN transistor Q5, a resistor R10, resistor R11, PNP transistor Q7, NPN transistor Q8, resistor R12, resistor R13, NPN transistor Q6, resistor R14, resistor R15, PNP transistor Q10, NPN transistor Q9 and resistor R16, The base of the NPN transistor Q5 is connected to the main control unit through the resistor R8, the first end of the resistor R9 is connected to the main control unit, and the second end of the resistor R9 is connected to the NPN transistor Q9. base, the emitter of the NPN transistor Q5 is grounded, the collector of the NPN transistor Q5 is connected to the base of the PNP transistor Q7 through the resistor R10, and the base of the PNP transistor Q7 is connected through the resistor R11 The collector of the PNP transistor Q7, the collector of the PNP transistor Q7 is connected to the source of the N-channel field effect transistor Q4, the collector of the PNP transistor Q7 is connected to the first channel electrode J1, and the PNP transistor Q7 The collector of the NPN transistor Q8 is connected to the collector of the NPN transistor Q8, the base of the NPN transistor Q8 is connected to the main control unit through the resistor R13, and the emitter of the NPN transistor Q8 is connected to the first end of the resistor R16 , the second end of the resistor R16 is grounded, The base of the NPN transistor Q6 is connected to the main control unit through the resistor R12, the emitter of the NPN transistor Q6 is grounded, and the collector of the NPN transistor Q6 is connected to the PNP transistor Q10 through the resistor R14. base, the base of the PNP transistor Q10 is connected to the emitter of the PNP transistor Q10 through the resistor R15, the emitter of the PNP transistor Q10 is connected to the source of the N-channel field effect transistor Q4, and the PNP transistor The collector of Q10 is connected to the second channel electrode J2, the collector of the PNP transistor Q10 is connected to the collector of the NPN transistor Q9, and the emitter of the NPN transistor Q9 is connected to the first end of the resistor R16. 3. The fatigue rehabilitation instrument based on vibration and electrical stimulation of meridian points according to claim 2, further comprising a sampling circuit, the sampling circuit comprising a resistor R17, a resistor R18, an operational amplifier U2, a resistor R19, and a resistor R20 and resistor R21, the non-inverting input end of the op-amp U2 is connected to the first end of the resistor R16 through the resistor R17, the non-inverting input end of the op-amp U2 is grounded through the resistor R18, and the op-amp U2 The inverting input terminal is grounded through the resistor R20, the output terminal of the operational amplifier U2 is connected to the inverting input terminal of the operational amplifier U2 through the resistor R19, and the output terminal of the operational amplifier U2 is connected through the resistor R21 the main control unit. 4. the fatigue rehabilitation instrument based on vibration and electrical stimulation of meridian points according to claim 2, is characterized in that, also comprises electromyographic signal acquisition circuit, and described electromyographic signal acquisition circuit comprises surface electrode J3, resistance R24, resistance R25 , an operational amplifier U4 and a resistor R26, the first end of the surface electrode J3 is connected to the inverting input terminal of the operational amplifier U4 through the resistor R24, and the second end of the surface electrode J3 is connected to the inverting input terminal through the resistor R25 The non-inverting input terminal of the operational amplifier U4, the output terminal of the operational amplifier U4 is connected to the inverting input terminal of the operational amplifier U4 through the resistor R26, and the output terminal of the operational amplifier U4 is connected to the main control unit. 5. The fatigue rehabilitation instrument based on vibration and electrical stimulation of meridian points according to claim 4, wherein said myoelectric signal acquisition circuit also includes resistor R27, resistor R28, capacitor C11, capacitor C10, operational amplifier U5, Capacitor C12, capacitor C13, resistor R30, resistor R29 and operational amplifier U6, the first end of the resistor R27 is connected to the output terminal of the operational amplifier U4, and the second end of the resistor R27 is connected to the The non-inverting input terminal of the operational amplifier U5, the non-inverting input terminal of the operational amplifier U5 is grounded through the capacitor C11, and the inverting input terminal of the operational amplifier U5 is connected to the second end of the resistor R27 through the capacitor C10, so The output end of the operational amplifier U5 is connected to the inverting input end of the operational amplifier U5, the output end of the operational amplifier U5 is connected to the first end of the capacitor C13 through the capacitor C12, and the second end of the capacitor C13 Connect the non-inverting input terminal of the operational amplifier U6, the non-inverting input terminal of the operational amplifier U6 is grounded through the resistor R29, and the inverting input terminal of the operational amplifier U6 is connected to the first capacitor C13 through the resistor R30 terminal, the output terminal of the operational amplifier U6 is connected to the inverting input terminal of the operational amplifier U6, and the output terminal of the operational amplifier U6 is connected to the main control unit. 6. The fatigue rehabilitation instrument based on vibration and electrical stimulation of meridians and acupoints according to claim 1, further comprising a massage circuit comprising a switch SW1, a diode D4, an inductor L2, a governor U3, a motor M1, resistor R22, rheostat RP1, resistor R23 and diode D5, the first end of the switch SW1 is connected to the 12V power supply, the second end of the switch SW1 is connected to the anode of the diode D4, and the cathode of the diode D4 passes through the The inductance L2 is connected to the power supply terminal of the governor U3, the power supply terminal of the governor U3 is connected to the first terminal of the motor M1, and the second terminal of the motor M1 is connected to the regulator of the governor U3. speed control end, the second end of the motor M1 is connected to the anode of the diode D5 through the resistor R23, the cathode of the diode D5 is connected to the torque control end of the governor U3, and the first end of the resistor R22 connected to the first end of the motor M1, the second end of the resistor R22 is connected to the first end of the rheostat RP1, the first end of the rheostat RP1 is connected to the sliding end of the rheostat RP1, and the rheostat RP1 The second terminal of is connected to the anode of the diode D5.

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