Electrical stimulation device based on high-order pseudo-random signal

Abstract

The invention discloses an electrical stimulation device based on a high-order pseudo-random signal, and the device is characterized in that the device provides a signal pre-generation module, a signal receiving module, a signal transmission module, a signal amplification module, a current detection module and an output interface which are connected in sequence; the high-order pseudo-random signal used by the device has complete frequency controllability, and the frequency of the high-order pseudo-random signal can be customized at will; the used high-order pseudo-random signal is realized by using specific coding programming, and the realized frequency domain signal can be predetermined; the used high-order pseudo-random signal can be repeatedly used; the electrical stimulation device based on the high-order pseudo-random signals can select the high-order pseudo-random stimulation signals with different frequency combinations to achieve arbitrary multi-frequency synchronous stimulation according to the natural frequency ranges of neuromuscles of different parts, the device can also achieve arbitrary encryption or sparseness of the combined frequencies, and the electrical stimulation device can achieve multi-frequency synchronous stimulation for specific groups and different individuals. And even personalized stimulation treatment of different diseases or different parts can be realized.

Description

Technical Field

[0001] The invention relates to an electrical stimulation technology, in particular to an electrical stimulation device based on a high-order pseudo-random signal. Background Art

[0002] Neuromuscular electrical stimulation therapy is a commonly used clinical treatment and rehabilitation system, and is widely used in the medical field. The system uses pulse current of a certain intensity to stimulate the muscles that need rehabilitation through a pre-set program, so that the treated muscles can recover and improve. It is mainly used to prevent or reduce muscle atrophy and enhance muscle strength and endurance.

[0003] The commonly used neuromuscular electrical stimulation method is low-frequency electrotherapy (frequency is below 1KHz), and low-frequency electrotherapy mainly includes induction electrotherapy, intermittent electrotherapy, and functional electrostimulation therapy. The commonly used neuromuscular electrical stimulation waveforms are generally conventional square waves, triangle waves, and sawtooth waves. Among them, the square wave signal is the most widely used stimulation signal as an electrical stimulation signal. The square wave signal waveform is simple and has a faster conversion speed, but the square wave signal energy attenuation is large. The triangle wave signal generation method is more complicated, the signal energy attenuation is weak, but the signal changes smoothly, the sawtooth wave signal generation method is complex, the signal energy attenuation is small, but the signal is not symmetrical. The electrical stimulation waveform generation method used in the above electrical stimulation methods is simple and easy to implement, and is currently used more frequently, but the commonly used electrical stimulation waveform frequency is fixed and single, and the energy attenuation is large. It can only stimulate the parts that meet the fixed frequency, and it is difficult to change the frequency of the electrical stimulation waveform. Based on a n Pseudo-random signal used in neuromuscular electrical stimulation system n The frequency of pseudo-random signals is different from that of commonly used electrical stimulation signals. n The pseudo-random signal generation method is relatively complicated. n The pseudo-random signal is a bidirectional symmetrical signal and the energy attenuated by the common electrical stimulation signal is a n Pseudo-random signals can be effectively supplemented, but a n Once the frequency a and order n set by the pseudo-random signal are selected, they cannot be changed. When stimulating a specific group of people, it is impossible to set a specific electrical stimulation frequency. In addition, the conventional electrical stimulation system is different from the one based on a n The electrical stimulation signals used in the neuromuscular electrical stimulation system based on pseudo-random signals cannot be kept confidential, nor can they be effectively stimulated for specific groups of people. The high-order pseudo-random signal frequency generation method used in the electrical stimulation device based on high-order pseudo-random signals is different from conventional electrical stimulation and a nPseudo-random signal electrical stimulation is more complicated, but the frequency of high-order pseudo-random signals can be set independently, the frequency of the signal can be set to any desired frequency, and the high-order pseudo-random signal used is implemented using specific coding programming. The implemented high-order pseudo-random signal can be predetermined. The device can select high-order pseudo-random stimulation electrical signals of different frequencies according to the inherent frequency of the neuromuscular system at different stimulation sites. The high-order pseudo-random signals used can be encrypted for use, so that the high-order pseudo-random signals used for different individuals can be used to stimulate specific individuals to achieve the effect of multi-frequency synchronous stimulation. The device can achieve the effect of specific stimulation treatment for specific populations. Summary of the invention

[0004] The purpose of the present invention is to improve the existing conventional electrical stimulation and n In order to overcome the shortcomings of pseudo-random signal electrical stimulation technology, an electrical stimulation device based on high-order pseudo-random signals is provided. The frequency of the high-order pseudo-random signal used by this device can be set by itself, and the high-order pseudo-random signal can be predetermined. It can select high-order pseudo-random stimulation electrical signals of different frequencies for stimulation according to the inherent frequency of the neuromuscular system at different stimulation sites. In addition, the high-order pseudo-random signal can be encrypted for use, so that the high-order pseudo-random signal used for different individuals can be used to stimulate specific individuals to achieve the effect of multi-frequency synchronous stimulation. Synchronous stimulation signals of different frequencies are selected according to different parts of the human body to achieve the best stimulation treatment effect as much as possible, and it can also allow users to quickly restore their energy.

[0005] The technical solution for achieving the purpose of the present invention is: an electrical stimulation device based on a high-order pseudo-random signal, the device is provided with a signal pre-generation module, a signal receiving module, a signal transmission module, a signal amplification module, a current detection module, a power supply and an output interface connected in sequence, and the signal pre-generation module is programmed by a PC software algorithm to generate a high-order pseudo-random signal or by an FPGA software algorithm to generate a high-order pseudo-random signal. The generated high-order pseudo-random signal written by the PC software is directly written into the single-chip microcomputer memory, wherein the PC transmits a high-order pseudo-random signal signal group of different frequencies, and different groups of signals are input into the single-chip microcomputer through the INPUT1 port, and the output signal of the single-chip microcomputer output interface OUTPUT1 is used to judge whether the PC is successfully written into the single-chip microcomputer memory. The high-order pseudo-random signal programmed by the FPGA software algorithm is output through the FPGA output interface. The FPGA output interface U1 is connected to the single-chip microcomputer input interface INPUT1, and the input interface U2 is connected to the single-chip microcomputer output interface OUTPUT1, wherein the signal output by OUTPUT1 is used to judge whether the FPGA is successfully transmitted to the single-chip microcomputer;

[0006] The signal receiving module includes a single-chip circuit, wherein two different IO ports INPUT1 and OUTPUT1 are connected to a PC or FPGA, the third IO port OUTPUT2 of the single-chip is connected to a signal amplification module, the fourth IO port of the single-chip is connected to a current detection module, the fifth IO port of the single-chip is connected to a button, and the sixth IO port of the single-chip is connected to a power supply module;

[0007] The signal transmission module is provided with a primary amplifying circuit and a signal regulating circuit, and is connected to the primary amplifying circuit via the output end of the signal receiving module. The signal regulating circuit includes a potentiometer regulating circuit and a bidirectional voltage regulator circuit. Among them, the non-inverting input end of the first operational amplifier AMP1 in the primary amplification circuit receives the high-order pseudo-random signal of the signal pre-generation module through the resistor R1, the output end of the first operational amplifier AMP1 is connected to the inverting input end of the first operational amplifier AMP1 through the resistor R3, the other end of the resistor R2 is connected to the inverting input end, and the other end is connected to AGND, the output end of the first operational amplifier AMP1 is connected to the second inverting input end of the first operational amplifier AMP1 through the resistor R4, one end of the potentiometer R5 is connected to the second inverting input end of the first operational amplifier AMP1, the other end is connected to the power supply VEE, and the third end is connected to AGND, the second in-phase input end of the first operational amplifier AMP1 is connected to AGND, the second output end of the first operational amplifier AMP1 is connected to the bidirectional voltage regulator DIO through the resistor R6, the bidirectional voltage regulator DIO is externally connected to AGND, and the high-order pseudo-random signal with a fixed amplitude is finally output through the bidirectional voltage regulator DIO, wherein VEE is connected to the second inverting input end of the first operational amplifier AMP1 through the potentiometer R5 to provide the adjustment voltage Vp;

[0008] The signal amplification module is provided with an inverter circuit and a signal secondary amplification circuit, wherein the signal outputted by the signal processing module in the inverter circuit is outputted via the bidirectional voltage regulator DIO as an input end and connected to the inverting input end of the second operational amplifier AMP2 through a resistor R7, one end of the resistor R8 is connected to the inverting input end of the second operational amplifier AMP2, and the other end is connected to the output end of the second operational amplifier AMP2, the in-phase input end of the second operational amplifier AMP2 is connected to AGND, the signal secondary amplification circuit includes a third operational amplifier AMP3, the signal outputted by the inverter circuit is connected to the in-phase input end of the third operational amplifier AMP3 via a resistor R9, one end of the resistor R11 is connected to the output end of the third operational amplifier AMP3, and the other end is connected to the inverting input end of the third operational amplifier AMP3, one end of the resistor R10 is connected to the inverting input end of the third operational amplifier AMP3, and the other end is connected to AGND, the signal obtained by the inverter circuit and the signal amplification circuit is the final required high-order pseudo-random electrical stimulation signal, and the signal outputted via the output end of the third operational amplifier AMP3 is outputted by the output interface;

[0009] The output end of the current detection module is connected to the DET IO port of the single-chip computer. The current detection module includes a current detection circuit. The signal output from the signal amplification output end is connected to the resistor R13 via the resistor R12. R16 is connected to the non-inverting input end of the fourth operational amplifier AMP4. One end of the resistor R15 is connected to the inverting input end of the fourth operational amplifier AMP4, and the other end is connected to AGND. One end of the resistor R14 is connected to the inverting input end of the fourth operational amplifier AMP4, and the other end is connected to AGND. One end of the resistor R17 is connected to the resistor R12, and the other end is connected to AGND.

[0010] The VCC, VEE, AGND, and GND terminals are all connected to the corresponding VCC, VEE, AGND, and GND terminals on the PCB board, and the output interface is connected to the external therapy electrode sheet.

[0011] Preferably, the single chip microcomputer is STM32F105RCT6.

[0012] Preferably, the first operational amplifier AMP1 and the second operational amplifier AMP2 are both LM358DR, the third operational amplifier AMP3 is OP07D, and the fourth operational amplifier is LM324.

[0013] Preferably, the bidirectional voltage regulator is SD03C.

[0014] The technical solution generates a high-order pseudo-random signal by programming a PC or FPGA algorithm, and the signal receiving module circuit receives the high-order pseudo-random signal. The received high-order pseudo-random signal is subjected to primary amplification and signal amplitude adjustment by a signal processing module. The signal processed by the signal processing module is inverted and secondary amplified by a signal amplification module to obtain the final required high-order pseudo-random signal. Finally, the physiotherapy electrode sheet connected to the output interface outputs a current carrying a high-order pseudo-random signal that meets the requirements of electrical stimulation. The technical solution can output high-order pseudo-random signals with different frequencies in different groups, which effectively solves the problem that the frequency of the electrical stimulation current of other electrical stimulation systems is single and only one set of fixed frequencies can be used when in use, and different sets of frequency signals cannot be switched when in use. The signal has high security and good confidentiality. The high-order pseudo-random signal is conducive to achieving a better stimulation effect, and the frequency can be set for different parts to achieve a therapeutic effect.

[0015] This technical solution can solve the problem that the existing electrical stimulation system lacks the corresponding frequency signal when it needs to output stimulation to a specific part and cannot change when there are multiple frequency signals within one cycle. The time domain superposition waveform of the high-order pseudo-random signal can generate multiple frequency signals at the same time. It has the general characteristics of a random waveform, and has many advantages such as pre-customization, repeatable generation, easy implementation, high confidentiality, and strong targeting.

[0016] The frequency of the electrical stimulation signal used by this device is controllable and highly safe. Different sets of frequency signals can be set according to the stimulation of different parts of the body. Electrical stimulation can also be performed on specific groups of people, achieving specialized stimulation while also achieving the best possible stimulation treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an embodiment device;

[0018] Figure 2 It is a waveform diagram of a high-order pseudo-random signal in an embodiment;

[0019] Figure 3 It is a spectrum diagram of a high-order pseudo-random signal of an embodiment;

[0020] Figure 4 A circuit diagram of an electrical stimulation device for a high-order pseudo-random signal;

[0021] Figure 5 This is a circuit diagram of a signal receiving module in an embodiment;

[0022] Figure 6 This is a circuit diagram of a signal transmission module in an embodiment;

[0023] Figure 7 This is a circuit diagram of a signal amplification module in an embodiment;

[0024] Figure 8 Schematic diagram of the current detection module circuit in the embodiment. DETAILED DESCRIPTION

[0025] The content of the present invention is further described below in conjunction with the drawings and embodiments, but the present invention is not limited thereto.

[0026] Example

[0027] like Figure 1 As shown, an electrical stimulation device based on a high-order pseudo-random signal is provided, wherein the device is provided with a signal pre-generation module, a signal receiving module, a signal transmission module, a signal amplifying module, a current detection module, and an output interface which are connected in sequence. The signal pre-generation module generates a high-order pseudo-random signal by superimposing and modulating square wave signals of different frequencies by a PC or FPGA and sends it to the signal receiving module. The signal receiving module is provided with a single-chip microcomputer, and parameters can be adjusted by pressing buttons. The signal is output to the signal transmission module through the signal receiving module, and is output to the signal amplifying module after primary amplification and signal adjustment. The signal is output after inversion, and is finally output to the output interface after secondary amplification, wherein the output current is detected by the current detection module, and the +3.3V in the power supply module is used to power the MCU of the signal receiving module, the ±5V is used to power the signal transmission module, and the ±12V is used to power the signal amplifying module.

[0028] In this embodiment, the high-order pseudo-random signal is a thirteenth-order high-order pseudo-random signal, which is generated by superimposing two different pseudo-random signals. In the PC, basic square wave signals of different frequencies are generated, and the frequency of the square wave signal increases by F (F can be set as needed), where F can be set manually, and six basic square wave signals of f1 Hz, f2 Hz, f3 Hz, f4 Hz, f5 Hz, and f6 Hz are superimposed, where f1=F0, f2=F1, f3=F2, f4=F3, f5=F4, and f6=F5, and another pseudo-random signal with frequencies of f7 Hz, f8 Hz, f9 Hz, f10 Hz, f11 Hz, f12 Hz, and f13 Hz are respectively generated. The seven basic square wave signals of Hz are superimposed, among which f7=F6, f8=F7, f9=F8, f10=F9, f11=F10, f12=F11, and f13=F12. The two pseudo-random signals are superimposed and amplitude modulated to obtain the thirteenth-order high-order pseudo-random signal. In the FPGA, square wave signals with frequencies of f1 Hz, f2 Hz, f3 Hz, f4 Hz, f5 Hz, f6 Hz, f7 Hz, f8 Hz, f9 Hz, f10 Hz, f11 Hz, f12 Hz, and f13 Hz are directly generated. These thirteen square wave signals are superimposed to obtain the thirteenth-order high-order pseudo-random signal. The signal waveform is shown in the figure. Figure 2 As shown, the signal spectrum is as follows Figure 3 As shown, L is the signal order, F is the signal frequency, and 1Hz-96 Hz is the frequency range of the high-order pseudo-random signal;

[0029] like Figure 4As shown, an electrical stimulation device based on a high-order pseudo-random signal is provided, wherein the device is provided with a signal pre-generation module, a signal receiving module, a signal transmission module, a signal amplification module, a current detection module, and an output interface which are connected in sequence. The signal pre-generation module directly generates a high-order pseudo-random signal from a PC or FPGA and sends it to the signal receiving module. The signal receiving module is provided with a single-chip microcomputer. The first basic IO port INPUT1 of the single-chip microcomputer receives the high-order pseudo-random signal sent by the PC or FPGA. The second basic IO port OUTPUT1 of the single-chip microcomputer outputs a judgment signal to the PC or FPGA. The third IO port OUTPUT2 of the single-chip microcomputer outputs the high-order pseudo-random signal to the signal processing module. The four IO ports, namely the DET ports, output the high-order pseudo-random signals to the current detection module. The fifth IO port, namely the KEY1 port, of the single-chip microcomputer changes the different groups of high-order pseudo-random signals sent. The sixth IO port, namely the KEY2 port, of the single-chip microcomputer switches the entire device on and off. The high-order pseudo-random signals outputted from the output port of the single-chip microcomputer are amplified by the primary amplifier circuit in the signal transmission module. The signal adjustment circuit provides a reference voltage for amplitude modulation. The high-order pseudo-random signals after amplitude modulation are inverted by the reverse circuit in the signal amplification module and amplified by the secondary amplifier circuit to obtain the final required high-order pseudo-random signals. The high-order pseudo-random signals are outputted to the therapy electrode sheet via the output interface. The outputted high-order pseudo-random signals are simultaneously outputted to the current detection module.

[0030] like Figure 5 As shown, the MCU used in the signal receiving module is STM32F105RCT6, the first basic IO port INPUT1 of the MCU receives the high-order pseudo-random signal sent by the PC or FPGA, the second basic IO port OUTPUT1 of the single-chip microcomputer outputs the judgment signal to the PC or FPGA, the third IO port OUTPUT2 of the single-chip microcomputer outputs the high-order pseudo-random signal to the signal processing module, the fourth IO port DET of the single-chip microcomputer outputs the high-order pseudo-random signal to the current detection module, the fifth IO port KEY1 of the single-chip microcomputer changes the high-order pseudo-random signals of different groups sent, and the sixth IO port KEY2 of the single-chip microcomputer turns on and off the entire device;

[0031] like Figure 6As shown, the signal transmission module is provided with a primary amplifying circuit and a signal conditioning circuit, and is connected to the primary amplifying circuit via the output terminal O1 of the signal receiving module. Among them, the output terminal 3 of the first operational amplifier AMP1, i.e., LM358DR, in the primary amplifying circuit is connected to the first positive input terminal 1, i.e., terminal 1, of the first operational amplifier AMP1 via a resistor R2, and the other end of R2 is connected to the first inverting input terminal 2, i.e., terminal 2, and one end of the resistor R3 is connected to the first inverting input terminal 2, i.e., terminal AGND, the first non-inverting input terminal 1, i.e., terminal 1, of the first operational amplifier AMP1 is connected to the signal receiving module via a resistor R1, the first output terminal O1, i.e., terminal 3, of the first operational amplifier AMP1 is connected to the second inverting input terminal 5, i.e., terminal 5, of the first operational amplifier AMP1 via a resistor R4, and one end of the potentiometer R5, i.e., terminal 1, is connected to the second inverting input terminal 2, i.e., terminal 3, of the first operational amplifier AMP1 is connected to the second inverting input terminal 5, i.e., terminal 5, of the first operational amplifier AMP1 The first operational amplifier AMP1 has a second positive input terminal, namely terminal 4, connected to AGND, and a second output terminal O2, namely terminal 6, connected to the bidirectional voltage regulator DIO via a resistor R6. The bidirectional voltage regulator DIO is externally connected to AGND. The output terminal O3 of the bidirectional voltage regulator DIO finally outputs a high-order pseudo-random signal with a fixed amplitude. VEE is connected to the second inverting input terminal, namely terminal 5, of the first operational amplifier AMP1 via terminal 1 of the potentiometer R5 to provide an adjustment voltage Vp. The resistance values ​​of the resistors R1, R4, R5, and R6 are all 1KΩ, and the resistance values ​​of the resistors R2 and R3 are all 2KΩ.

[0032] like Figure 7 As shown, the signal amplification module includes an inverter circuit and a secondary amplification circuit, the high-order pseudo-random signal outputted from the O3 terminal in the signal processing module is connected to the second operational amplifier AMP2, namely the inverting input terminal of LM358DR, namely the 2nd terminal, through a resistor R7, one end of a resistor R8 is connected to the inverting input terminal of the second operational amplifier, namely the 2nd terminal, and the other end is connected to the output terminal O4, namely the 3rd terminal of the second operational amplifier AMP2, the positive input terminal, namely the 1st terminal of the second operational amplifier AMP2 is connected to AGND, the inverter output terminal O4 is connected to the positive input terminal, namely the 1st terminal, of the third operational amplifier AMP3, namely the OP07D, through a resistor R9, one end of a resistor R10 is connected to the inverting input terminal, namely the 2nd terminal of the third operational amplifier, and the other end is connected to AGND, one end of a resistor R11 is connected to the inverting input terminal, namely the 2nd terminal of the third operational amplifier, and the other end is connected to the output terminal, namely the 3rd terminal of the third operational amplifier AMP3, wherein the resistance values ​​of the resistors R7, R8, R9, and R10 are all 1KΩ, and the resistance value of the resistor R10 is 6KΩ;

[0033] like Figure 8As shown, the input end of the current detection module is connected to the signal amplification module, and the output end O5 of the signal amplification module is connected to the resistors R13 and R17 via the resistor R12. One end of the resistor R13 is connected to the positive input end of the fourth operational amplifier AMP4, i.e., end 1, and the other end is connected to the resistor R12. One end of the resistor R14 is connected to AGND, and the other end is connected to the inverting input end of the fourth operational amplifier AMP4, i.e., end 2 of LM324. One end of the resistor R15 is connected to AGND, and the other end is connected to the inverting input end of the fourth operational amplifier AMP4, i.e., end 2. One end of the resistor R16 is connected to the output end of the fourth operational amplifier AMP4, i.e., end 3, and the other end is connected to the positive input end of the fourth operational amplifier AMP4, i.e., end 1. The output end of the fourth operational amplifier is connected to the DET port of the single-chip microcomputer in the signal receiving circuit, wherein the resistance values ​​of the resistors R12, R13, R14, R15, and R16 are all 1KΩ, and the resistance value of the resistor R17 is 5KΩ;

[0034] VCC, VEE, AGND and GND are all connected to the corresponding VCC, VEE, AGND and GND terminals in the PCB board, and the output interface is connected to the external physiotherapy electrode sheet. In this example, the current intensity of the high-order pseudo-random signal after the final amplification is output through the output interface within the range of reasonable electrical stimulation for the human body;

[0035] In this example, the high-order pseudo-random signal is a high-order pseudo-random signal formed by superimposing and modulating a plurality of low-order pseudo-random signals, and the high-order pseudo-random signal satisfies the high-order pseudo-random signal encoding, and a plurality of low-order pseudo-random signals are superimposed to obtain the final high-order pseudo-random signal;

[0036] In this example, the VCC terminal of the microcontroller is connected to the VCC terminal of the PCB board, and the AGND and GND terminals are connected to the AGND and GND terminals of the PCB board.

[0037] In this example, the output interface is connected to a therapeutic electrode sheet, which is composed of a conductive gel, a conductive carbon film, a non-woven fabric and an electrode buckle, does not contain any drug ingredients, and cooperates with medium and low frequency, interfering electric electrotherapy equipment to transmit the electrical stimulation signal output by the electrotherapy equipment to the surface of human skin; the output interface is connected to the corresponding electrode sheet, and the electrode sheet is attached to the surface of the limb, so that the high-order pseudo-random signal output by the electrostimulation device based on high-order pseudo-random signals can be used for electrical stimulation.

Claims

1. An electrical stimulation device based on a high-order pseudo-random signal, characterized in that: The device is provided with a signal pre-generation module, a signal receiving module, a signal transmission module, a signal amplification module, a current detection module, a power supply and an output interface connected in sequence. The signal pre-generation module provides two different design schemes respectively (programmed by PC software algorithm to generate basic square wave signals for superposition and amplitude modulation to generate high-order pseudo-random signals, and input the high-order pseudo-random signals into the signal receiving module or directly generate high-order pseudo-random signals by FPGA software algorithm programming and output them to the signal receiving module through the FPGA output port). The signal receiving module is provided with a single-chip microcomputer, two basic IO ports of which are used as ports for inputting pre-generated high-order pseudo-random signals and ports for judging whether to output high-order pseudo-random signals. The high-order pseudo-random signals are programmed by PC software algorithm and the codes are written into the signal receiving module. In the single-chip computer, the PC end sends several groups of high-order pseudo-random signals or the FPGA is directly programmed to generate high-order pseudo-random signals and inputs them into the single-chip computer of the signal receiving module through the FPGA output port; wherein the first IO port of the single-chip computer in the signal receiving module, namely, the INPUT1 port, is used as a port for receiving high-order pseudo-random signals, the second IO port of the single-chip computer, namely, the OUTPUT1 port, is used as a port for judging whether the single-chip computer has received high-order pseudo-random signals, the third IO port of the single-chip computer, namely, the OUTPUT2 port, outputs a voltage signal carrying a high-order pseudo-random signal, the fourth IO port of the single-chip computer, namely, the DET port, detects the output current intensity of the OUTPUT2 port, the fifth IO port of the single-chip computer, namely, the KEY1 port, changes the different groups of high-order pseudo-random signals sent, and the sixth IO port, namely, the KEY2 port, turns the entire device on and off; The signal pre-generation module generates a high-order pseudo-random signal by programming a PC software algorithm or by programming a FPGA software algorithm; the generated high-order pseudo-random signal written by the PC software is directly written into the memory of the single-chip computer, wherein the PC transmits high-order pseudo-random signal groups of different frequencies, and different groups of signals are input into the single-chip computer through the INPUT1 port; The output signal of the MCU output interface OUTPUT1 is used to judge whether the PC is successfully written into the MCU memory. The high-order pseudo-random signal programmed by the FPGA software algorithm is output through the FPGA output interface. The FPGA output interface U1 is connected to the MCU input interface INPUT1, and the input interface U2 is connected to the MCU output interface OUTPUT1. The signal output by OUTPUT1 is used to judge whether the FPGA is successfully transmitted to the MCU. The signal receiving module includes a single-chip circuit, wherein two different IO ports INPUT1 and OUTPUT1 are connected to a PC or FPGA, the third IO port OUTPUT2 of the single-chip is connected to a signal amplification module, the fourth IO port of the single-chip is connected to a current detection module, the fifth IO port of the single-chip is connected to a button, and the sixth IO port of the single-chip is connected to a power supply module; The signal transmission module is provided with a primary amplifying circuit and a signal regulating circuit, which are connected to the primary amplifying circuit via the output end of the signal receiving module, and the signal regulating circuit includes a potentiometer regulating circuit and a bidirectional voltage regulator circuit; wherein the positive-phase input end of the first operational amplifier AMP1 in the primary amplifying circuit receives the high-order pseudo-random signal of the signal pre-generating module via a resistor R1, the output end of the first operational amplifier AMP1 is connected to the inverting input end of the first operational amplifier AMP1 via a resistor R3, the other end of the resistor R2 is connected to the inverting input end, and the other end is connected to AGND, the output end of the first operational amplifier AMP1 is connected to the first operational amplifier AMP1 via a resistor R4 The second inverting input terminal of the amplifier AMP1, one end of the potentiometer R5 is connected to the second inverting input terminal of the first operational amplifier AMP1, the other end is connected to the power supply VEE, the third end is connected to AGND, the second non-inverting input terminal of the first operational amplifier AMP1 is connected to AGND, the second output terminal of the first operational amplifier AMP1 is connected to the bidirectional voltage regulator DIO via the resistor R6, the bidirectional voltage regulator DIO is externally connected to AGND, and the final output of the bidirectional voltage regulator DIO is a high-order pseudo-random signal with a fixed amplitude, wherein VEE is connected to the second inverting input terminal of the first operational amplifier AMP1 via the potentiometer R5 to provide a regulating voltage Vp; The signal amplification module is provided with an inverter circuit and a signal secondary amplification circuit, wherein the signal outputted by the signal processing module in the inverter circuit is outputted via the bidirectional voltage regulator DIO as an input end and connected to the inverting input end of the second operational amplifier AMP2 through a resistor R7, one end of the resistor R8 is connected to the inverting input end of the second operational amplifier AMP2, and the other end is connected to the output end of the second operational amplifier AMP2, the in-phase input end of the second operational amplifier AMP2 is connected to AGND, the signal secondary amplification circuit includes a third operational amplifier AMP3, the signal outputted by the inverter circuit is connected to the in-phase input end of the third operational amplifier AMP3 via a resistor R9, one end of the resistor R11 is connected to the output end of the third operational amplifier AMP3, and the other end is connected to the inverting input end of the third operational amplifier AMP3, one end of the resistor R10 is connected to the inverting input end of the third operational amplifier AMP3, and the other end is connected to AGND, the signal obtained by the inverter circuit and the signal amplification circuit is the final required high-order pseudo-random electrical stimulation signal, and the signal outputted via the output end of the third operational amplifier AMP3 is outputted by the output interface; The output end of the current detection module is connected to the DET IO port of the single-chip computer. The current detection module includes a current detection circuit. The signal output from the signal amplification output end is connected to the resistor R13 via the resistor R12. R16 is connected to the in-phase input end of the fourth operational amplifier AMP4. One end of the resistor R15 is connected to the inverting input end of the fourth operational amplifier AMP4, and the other end is connected to AGND. One end of the resistor R14 is connected to the inverting input end of the fourth operational amplifier AMP4, and the other end is connected to AGND. One end of the resistor R17 is connected to the resistor R12, and the other end is connected to AGND. The VCC, VEE, AGND, and GND terminals are all connected to the corresponding VCC, VEE, AGND, and GND terminals on the PCB board, and the output interface is connected to the external therapy electrode sheet.

2. The electrical stimulation device based on a high-order pseudo-random signal according to claim 1, characterized in that: The single chip microcomputer is STM32F103C8T6.

3. The electrical stimulation device based on a high-order pseudo-random signal according to claim 1, characterized in that: The first operational amplifier AMP1 and the second operational amplifier AMP2 are both LM358DR, the third operational amplifier AMP3 is OP07D, and the fourth operational amplifier is LM324.

4. The electrical stimulation device based on a high-order pseudo-random signal according to claim 1, characterized in that: The bidirectional voltage regulator is SD03C.

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