Voltage regulation method and electrical stimulation device

Abstract

The invention relates to a voltage regulation method and an electrical stimulation device, and the method comprises the steps: obtaining a voltage parameter of a regulation and control element when a detection regulation and control circuit regulates an execution circuit to carry out the constant-current output, and adjusting the output voltage of the execution circuit according to the voltage parameter, so as to enable the voltage parameter of the regulation and control element to meet a preset condition, and finally, determining the adjusted output voltage as a target output voltage. Wherein the voltage parameter of the regulation and control element changes along with the output voltage of the execution circuit. According to the electrical stimulation device, the power consumption of a regulation and control element can be controlled when an execution circuit performs constant current output, so that the power consumption of the regulation and control element can be reduced even when the electrical stimulation device outputs different load currents, the electrical stimulation device can be prevented from heating, the performance of the electrical stimulation device is improved, and the electrical stimulation device is suitable for popularization and application. And the overall power consumption of the electrical stimulation device is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of electrical signal processing, and in particular to a voltage regulation method and an electrical stimulation device. Background Art

[0002] The electrical stimulation device uses the object of action as the load, and applies a set current to it to stimulate the tissue cells at the corresponding action site, thereby achieving the purpose of treatment or physical therapy. Current electrical stimulation devices usually adopt a voltage-controlled constant current source structure composed of an H-bridge and a field effect transistor. In order to meet the needs of outputting different load currents, the electrical stimulation device often uses a digital-to-analog converter to output different voltage values ​​to adjust the on-resistance of the field effect transistor in the electrical stimulation device, thereby generating a load current output by the electrical stimulation device that meets the preset requirements.

[0003] The above-mentioned load current regulation method results in a low efficiency of the electric stimulation device when the stimulation current is low, resulting in most of the energy being consumed by the field effect transistor. The field effect transistor dissipates the energy into the surrounding environment in the form of heat energy, causing the electric stimulation device to heat up and reducing its performance.

[0004] With regard to the problem in the related art that the load current is regulated, resulting in reduced performance of the electrical stimulation device and high power consumption, no effective solution has been proposed so far. Summary of the invention

[0005] In this embodiment, a voltage regulation method and an electrical stimulation device are provided to solve the problem in the related art that the load current is regulated, resulting in reduced performance of the electrical stimulation device and high power consumption.

[0006] In a first aspect, a voltage regulation method is provided in this embodiment for use in an electrical stimulation device, wherein the electrical stimulation device includes an execution circuit and a detection and regulation circuit, wherein the detection and regulation circuit includes a regulation element, and the method includes:

[0007] When the detection and control circuit adjusts the execution circuit to output a constant current, obtaining a voltage parameter of the control element;

[0008] The output voltage of the execution circuit is adjusted according to the voltage parameter so that the voltage parameter of the control element meets the preset conditions, and the adjusted output voltage is determined as the target output voltage; wherein the voltage parameter of the control element changes with the output voltage of the execution circuit.

[0009] In some embodiments, when the detection and control circuit adjusts the execution circuit to output a constant current, obtaining the voltage parameter of the control element includes:

[0010] When the detection and control circuit adjusts the execution circuit to output a constant current, based on the cycle of the voltage change of the control element, the target voltage of each corresponding cycle of the control element in multiple cycles is collected; wherein the target voltage is the lowest voltage in the cycle;

[0011] An average value is calculated for the multiple target voltages collected to obtain a voltage average value, and the voltage average value is determined as the voltage parameter.

[0012] In some embodiments, when the detection and control circuit adjusts the execution circuit to output a constant current, based on the cycle of the voltage change of the control element, collecting the target voltage of each corresponding cycle of the control element in multiple cycles includes:

[0013] When the detection and control circuit adjusts the execution circuit to output a constant current, according to the periodic characteristics of the voltage change of the control element, a delayed sampling period is determined from the period of the voltage change of the control element;

[0014] Determining, according to the delayed sampling period, a sampling time for sampling the voltage of the regulating element in each corresponding cycle in a plurality of cycles;

[0015] According to the sampling time, the voltage of the regulating element in the multiple cycles is sampled, and the sampled voltage is used as the target voltage of the regulating element in the corresponding cycle.

[0016] In some embodiments, determining the sampling time for sampling the voltage of the regulating element in each corresponding cycle in a plurality of cycles according to the delayed sampling period includes:

[0017] Obtaining the rising edge time of the modulation signal input to the control element;

[0018] A moment after the rising edge moment and separated from the rising edge moment by the delayed sampling period is used as a sampling moment for sampling the voltage of the regulating element.

[0019] In some embodiments, when the detection and control circuit adjusts the execution circuit to output a constant current, determining the delayed sampling period from the period of the voltage change of the control element according to the periodic characteristics of the voltage change of the control element includes:

[0020] Acquiring a pulse width of a modulation signal input to the regulating element and a sampling delay value of the regulating element;

[0021] According to the pulse width and the sampling delay value, a delayed sampling period is determined from the cycle of the voltage change of the regulating element.

[0022] In a second aspect, an electrical stimulation device is provided in this embodiment, comprising: a detection and control circuit and an execution circuit; the detection and control circuit comprises a control element; the execution circuit comprises a load access terminal; wherein:

[0023] The detection and control circuit is used to control the power of the control element so that the execution circuit performs constant current output; and is used to obtain the voltage parameter of the control element when adjusting the execution circuit to perform constant current output, and adjust the output voltage of the execution circuit according to the voltage parameter, so that the voltage parameter of the control element meets the preset conditions, and the adjusted output voltage is determined as the target output voltage; wherein the voltage parameter of the control element changes with the output voltage of the execution circuit;

[0024] The execution circuit is used to output an electrical signal under the regulation of the detection and control circuit.

[0025] In some embodiments, the detection and control circuit further includes a resistance control subcircuit and a voltage detection subcircuit; the resistance control subcircuit is connected to the control element; the voltage detection subcircuit includes a resistance module and an analog-to-digital conversion module, the resistance module is connected in parallel with the control element, and the analog-to-digital conversion module is connected to the resistance module; wherein:

[0026] The resistance control subcircuit is used to control the on-resistance of the regulating element;

[0027] The analog-to-digital conversion module is used to sample the voltage value of the regulating element through the resistance module to obtain the voltage parameter of the regulating element.

[0028] In some embodiments, the detection control circuit further includes a micro control unit and a diode module; the output end of the micro control unit is connected to the input end of the micro control unit through the diode module; the output end of the micro control unit is also connected to the analog-to-digital conversion module;

[0029] The microcontroller unit is used to output a modulation signal to the diode module so that the modulation signal is fed back to the input end of the microcontroller unit through the diode module, and is used to determine the moment when the analog-to-digital conversion module triggers sampling of the voltage of the control element based on the modulation signal fed back through the diode module.

[0030] In some of the embodiments, the execution circuit further includes a voltage boost circuit.

[0031] In some of the embodiments, the microcontroller unit is further used to send a control signal formed by the voltage parameters detected by the voltage detection subcircuit to the boost circuit; the boost circuit is used to adjust the output voltage of the execution circuit according to the control signal.

[0032] Compared with the related art, the voltage regulation method and the electrical stimulation device provided in this embodiment obtain the voltage parameters of the regulating element when the detection control circuit adjusts the execution circuit to output a constant current, and adjusts the output voltage of the execution circuit according to the voltage parameters, so that the voltage parameters of the regulating element meet the preset conditions, and finally determines the adjusted output voltage as the target output voltage; wherein the voltage parameters of the regulating element change with the output voltage of the execution circuit. It can realize the control of the power consumption of the regulating element when the execution circuit outputs a constant current, so that even when the electrical stimulation device outputs different load currents, the power consumed by the regulating element can be reduced, thereby preventing the electrical stimulation device from heating, thereby improving the performance of the electrical stimulation device, and reducing the overall power consumption of the electrical stimulation device.

[0033] Details of one or more embodiments of the present application are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0035] Figure 1 is a flow chart of the voltage regulation method of this embodiment;

[0036] Figure 2 is a schematic diagram of the structure of an electrical stimulation device in the related art;

[0037] Figure 3a yes Figure 2 The equivalent circuit diagram of the electrical stimulation device shown in a switch closed state;

[0038] Figure 3b yes Figure 2 An equivalent circuit diagram of the electrical stimulation device shown in yet another switch closed state;

[0039] Figure 4a It is a waveform comparison diagram of the voltage of the control element and the load current when the DC load is applied;

[0040] Figure 4b It is a waveform comparison diagram of the voltage of the control element and the load current when AC load is applied;

[0041] Figure 5 is a flow chart of a voltage regulation method for an electrical stimulation device according to the preferred embodiment;

[0042] Figure 6 is a schematic diagram of the structure of the electrical stimulation device of this embodiment;

[0043] Figure 7 Schematic diagram of the composition of the micro-control unit and the diode module in this embodiment;

[0044] Figure 8 Schematic diagram of voltage boosting of the execution circuit in this embodiment. DETAILED DESCRIPTION

[0045] In order to more clearly understand the purpose, technical solutions and advantages of the present application, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments.

[0046] Unless otherwise defined, the technical terms or scientific terms involved in this application shall have the general meaning understood by people with ordinary skills in the technical field to which this application belongs. The words "one", "a", "a", "the", "these" and the like in this application do not represent quantitative restrictions, and they can be singular or plural. The terms "include", "comprise", "have" and any variants thereof involved in this application are intended to cover non-exclusive inclusions; for example, a process, method and system, product or device comprising a series of steps or modules (units) is not limited to the listed steps or modules (units), but may include unlisted steps or modules (units), or may include other steps or modules (units) inherent to these processes, methods, products or devices. The words "connect", "connected", "coupled" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether directly or indirectly. The "multiple" involved in this application refers to two or more. "And / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, "A and / or B" can mean: A exists alone, A and B exist at the same time, and B exists alone. Usually, the character " / " indicates that the objects associated with each other are in an "or" relationship. The terms "first", "second", "third", etc. involved in this application are only used to distinguish similar objects and do not represent a specific ordering of the objects.

[0047] In this embodiment, a voltage regulation method is provided for an electrical stimulation device. The electrical stimulation device includes an execution circuit and a detection and control circuit. The detection and control circuit includes a control element. Figure 1 is a flow chart of the voltage regulation method of this embodiment. Figure 1 As shown, the process includes the following steps:

[0048] Step S101, when detecting that the control circuit adjusts the execution circuit to output a constant current, a voltage parameter of the control element is obtained.

[0049] Among them, the electrical stimulation device can generate a stimulation current and output the stimulation current to the stimulation object through the electrode to achieve a physiological effect on the stimulated part of the stimulation object. Exemplarily, the electrical stimulation device can include an electrical stimulation therapeutic device, an electrical stimulation physiotherapy device, etc. The execution circuit in the electrical stimulation device refers to a circuit for outputting a load signal to the stimulation object. In the electrical stimulation device, the execution circuit can be implemented in the form of an H-bridge circuit, and the execution circuit includes a load access terminal. The detection and control circuit in the electrical stimulation device is used to adjust the load signal output by the execution circuit so that the load signal output by the execution circuit meets the preset load requirements. For example, the detection and control circuit can adjust the load current output by the execution circuit by controlling the on-resistance of the control element so that the load current meets the load requirements in the actual application scenario. The control element can specifically be a field effect tube or a triode, and the detection and control circuit can also include a digital to analog converter (Digital to analog converter, referred to as DAC) and an amplifier.

[0050] When the execution circuit outputs a constant current signal that meets the load requirements based on the adjustment of the detection and control circuit, it indicates that the electrical stimulation device is now in a normal working state. Therefore, when the detection and control circuit adjusts the execution circuit to output a constant current, this embodiment obtains the voltage parameters of the control element so as to accurately obtain the voltage information of the control element of the electrical stimulation device under the actual working state. The voltage parameter can be either the voltage value of the control element at a certain moment, or a statistical value obtained by statistically processing the voltage value of the control element within a preset period of time. Preferably, the final voltage parameter of the control element can be determined based on the lowest voltage value of the field effect tube in each sampling period.

[0051] Step S102, adjusting the output voltage of the execution circuit according to the voltage parameter so that the voltage parameter of the control element meets the preset condition, and determining the adjusted output voltage as the target output voltage; wherein the voltage parameter of the control element changes with the output voltage of the execution circuit.

[0052] After obtaining the voltage parameters of the regulating element, the voltage parameters of the regulating element are adjusted based on the output voltage of the execution circuit so that the voltage parameters of the regulating element change with the adjusted output voltage, thereby making the voltage parameters of the regulating element meet the preset conditions. Among them, since the voltage on the regulating element is related to the power consumed by the regulating element, when the voltage parameters of the regulating element meet the preset conditions, the power of the regulating element can also meet the preset power requirements. Preferably, when the voltage on the regulating element can stabilize at the minimum voltage in the voltage change cycle, or reach a preset low voltage range, it can be regarded that the voltage parameters of the regulating element meet the preset conditions. When the voltage parameters meet the preset conditions, the power consumed by the regulating element can also meet the preset low power requirements, thereby avoiding the consumption of power of the electrical stimulation device by the regulating element.

[0053] Among them, this embodiment adjusts the voltage parameters of the control element by adjusting the output voltage of the execution circuit based on the voltage parameters. Specifically, this embodiment can calculate and adjust the input voltage input to the execution circuit based on the voltage parameters obtained in step S210, thereby adjusting the output voltage of the execution circuit. For example, the input voltage Vcc input to the execution circuit is obtained by passing the voltage of the battery through a boost circuit. In the related art, the voltage Vcc is a fixed value. This embodiment adjusts the voltage Vcc based on the voltage parameters, thereby changing the output voltage of the execution circuit, and then obtaining the target output voltage.

[0054] Figure 2 FIG. 1 is a schematic diagram of the structure of an electrical stimulation device in the related art. Figure 2 As shown, it includes an execution circuit 201 and a control circuit 202. The execution circuit 201 includes an H-bridge circuit composed of transistors Q1, Q2, Q3 and Q4. L It represents the load connected to the load access terminal of the execution circuit 201. The pulse width modulation signals PWM1 and PWM2 are input from the base of the transistor in the H-bridge circuit to the execution circuit 201, and flow through the control element in the control circuit 202, that is, the field effect transistor Q5, based on the closing or opening of different transistors. In the control circuit 202, the digital-to-analog converter DAC outputs different voltage values ​​based on the received signal, and changes the on-resistance of the field effect transistor Q5 through the amplifier OP1, so that the execution circuit 201 generates a corresponding load current, that is, in the execution circuit 201, the current on the load ZL is regulated by the control circuit 202.

[0055] Figure 3a for Figure 2 The equivalent circuit diagram of the electrical stimulation device shown in a switch closed state; Figure 3b for Figure 2The equivalent circuit diagram of the electrical stimulation device in another switch closed state is shown in FIG. Where Rmos represents the equivalent resistance of the field effect transistor Q5. Figure 3a and Figure 3b It can be seen that the H-bridge circuit in the execution circuit can change the direction of the current on the load ZL when different transistors are closed or opened, while the current direction on the field effect tube remains unchanged. Figure 3a The transistors Q1 and Q3 are disconnected, while Q2 and Q4 are closed, and the current on the load ZL flows from right to left; Figure 3b The transistors Q2 and Q4 are disconnected, while Q1 and Q3 are closed, and the current on the load ZL flows from left to right; but Figure 3a and Figure 3b The current flow direction on the equivalent resistor Rmos is always the same. Therefore, the load ZL and the equivalent resistor Rmos can be regarded as a series relationship.

[0056] Therefore, combined with Figure 2 , Figure 3a as well as Figure 3b It can be seen that in the related art, when the required load current is small, the load current flowing through the load on the execution circuit can be reduced by increasing the on-resistance of the field effect tube to make it meet the load requirements. The above situation will lead to excessive power on the field effect tube, resulting in power waste. Therefore, on the basis of the related art, the present application detects the voltage parameters of the control element and adjusts the output voltage of the execution circuit according to the voltage parameters, so that the voltage parameters of the control element that change with the output voltage of the execution circuit can meet the preset conditions, thereby realizing the control of the power of the control element and avoiding power consumption. Compared with the related art in which the output voltage of the execution circuit is a fixed value under different load outputs, and the problem of power consumption on the control element cannot be avoided, this embodiment can reduce the overall power consumption of the electrical stimulation device.

[0057] In the above steps S210 to S220, when the detection control circuit adjusts the execution circuit to output a constant current, the voltage parameters of the control element are obtained, and the output voltage of the execution circuit is adjusted according to the voltage parameters, so that the voltage parameters of the control element meet the preset conditions, and the adjusted output voltage is determined as the target output voltage; wherein the voltage parameters of the control element change with the output voltage of the execution circuit. It can realize the control of the power consumption of the control element when the execution circuit outputs a constant current, so that even when the electrical stimulation device outputs different load currents, the power consumed by the control element can be reduced, thereby preventing the electrical stimulation device from heating, thereby improving the performance of the electrical stimulation device, and reducing the overall power consumption of the electrical stimulation device.

[0058] In one embodiment, based on the above step S210, when the detection control circuit adjusts the execution circuit to output a constant current, obtaining the voltage parameter of the control element may specifically include the following steps:

[0059] When the detection control circuit adjusts the execution circuit to output a constant current, based on the period of voltage change of the control element, the target voltage of the control element in each corresponding period in multiple periods is collected; wherein the target voltage is the lowest voltage in the period; the multiple target voltages collected are averaged to obtain a voltage average, and the voltage average is determined as a voltage parameter.

[0060] Figure 4a The waveform comparison diagram of the voltage of the control element and the load current when the DC load is applied; Figure 4b This is a waveform comparison diagram of the voltage of the control element and the load current when the AC load is applied. Figure 4a and Figure 4b In the figure, the horizontal axis represents time and the vertical axis represents the amplitude of the signal. Figure 4a The area of ​​the shaded part A is positively correlated. When the AC load is applied, the power consumed by the field effect tube is Figure 4b The area of ​​the shaded part B is positively correlated. Figure 4a and Figure 4b In order to reduce the power consumption of the field effect tube, this embodiment needs to reduce the area of ​​the shaded portion A under the DC load and the area of ​​the shaded portion B under the AC load. In addition, when carrying a DC load, when the voltage across the field effect tube is reduced to close to 0, the power consumption of the field effect tube is minimized; and when carrying an AC load, when the lowest point voltage of the field effect tube is reduced to close to 0, the power consumption of the field effect tube is minimized. Therefore, this embodiment samples the lowest voltage of the field effect tube in the voltage change cycle in real time as the voltage parameter of the control element. Among them, the voltage change cycle of the control element is Figure 4a and Figure 4b The cycle of the waveform change of the field effect tube. In this embodiment, the minimum voltage in the corresponding cycle is collected in multiple cycles, thereby obtaining multiple minimum voltages, and then the voltage average is obtained based on the average calculation, so as to improve the accuracy of voltage information collection and avoid information errors caused by interference.

[0061] Further, in one embodiment, when the detection control circuit adjusts the execution circuit to output a constant current, based on the cycle of the voltage change of the control element, collecting the target voltage of each corresponding cycle of the control element in multiple cycles may specifically include:

[0062] When the detection control circuit adjusts the execution circuit to perform constant current output, a delayed sampling period is determined from the period of the voltage change of the control element according to the periodic characteristics of the voltage change of the control element; a sampling moment for sampling the voltage of the control element in each corresponding period in multiple periods is determined according to the delayed sampling period; according to the sampling moment, the voltage of the control element in multiple periods is sampled, and the sampled voltage is used as the target voltage of the control element in the corresponding period.

[0063] Specifically, combined Figure 4a and Figure 4b It can be seen that in each cycle of voltage change, the lowest voltage of the field effect tube will appear at the moment when the current is about to be turned off. Considering that the voltage sampling of the field effect tube based on the hardware circuit is often caused by the hardware itself, in order to avoid missing the sampling of the lowest voltage in each cycle, it is necessary to set a delayed sampling period for each cycle of voltage change, so that the corresponding voltage information can be collected in time before the current flowing through the field effect tube is turned off. Among them, this embodiment selects a reference moment from each cycle of voltage change, takes the reference moment as the starting point, and adds the delayed sampling period to determine the final sampling moment in each cycle. In each cycle of the voltage change of the control element, this embodiment samples the voltage of the control element based on the sampling moment determined by the delayed sampling period, which can realize timely, accurate and controllable sampling of the voltage of the control element, thereby obtaining effective voltage information.

[0064] Furthermore, in one embodiment, determining the sampling time for sampling the voltage of the control element in each corresponding cycle in the multiple cycles according to the delayed sampling period may include:

[0065] The rising edge moment of the modulation signal input to the control element is obtained; and the moment after the rising edge moment and separated from the rising edge moment by a delayed sampling period is used as the sampling moment for sampling the voltage of the control element.

[0066] Among them, the moment when the current flowing through the regulating element is turned off corresponds to the falling edge moment of the modulation signal input to the regulating element, wherein the modulation signal can specifically be a pulse width modulation signal. Based on the above content, taking into account the delay problem existing in the voltage sampling process, this embodiment uses the rising edge moment of the modulation signal before the falling edge moment as the reference moment, and takes the rising edge moment as the starting moment, and the moment after the delayed sampling period is determined as the sampling moment for sampling the voltage of the regulating element. For example, if the rising edge moment is a and the delayed sampling period is t, the sampling moment in each cycle is the (a+t) moment in the cycle. This embodiment uses the rising edge as a reference, combined with the delayed sampling moment to determine the final sampling moment, and can ultimately trigger the timely sampling of the regulating element by detecting the rising edge of the modulation signal.

[0067] In addition, in one embodiment, when the detection control circuit adjusts the execution circuit to perform constant current output, according to the periodic characteristics of the voltage change of the control element, the delayed sampling period is determined from the period of the voltage change of the control element, including:

[0068] The pulse width of the modulation signal input to the control element and the sampling delay value of the control element are obtained; and the delayed sampling period is determined from the cycle of the voltage change of the control element according to the pulse width and the sampling delay value.

[0069] Since the length of a cycle of voltage change of the control element corresponds to the pulse width of the modulation signal input to the control element, the above-mentioned delayed sampling period can be set based on the pulse width and a predetermined sampling delay value. The sampling delay value refers to the delay value between the hardware itself that performs voltage sampling on the control element and receiving the sampling instruction and completing the voltage sampling, which can be obtained by testing the hardware used for voltage sampling in advance. For example, the pulse width of the modulation signal is t on , and the sampling delay value is t d , then the delayed sampling period t=t on -t d .

[0070] The present embodiment is described and illustrated below through preferred embodiments.

[0071] Figure 5 1 is a flow chart of a voltage regulation method for an electrical stimulation device according to a preferred embodiment of the present invention. The electrical stimulation device includes an execution circuit and a detection and regulation circuit. The detection and regulation circuit includes a regulation element. Figure 5 As shown, the voltage regulation method includes the following steps:

[0072] Step S501, raising the input voltage of the execution circuit to a maximum value Vmax;

[0073] Step S502, according to the preset load requirement, controlling the detection and regulation circuit to adjust the execution circuit so that the execution circuit outputs a constant current;

[0074] Step S503, when the circuit is executing constant current output, taking the rising edge of the modulation signal of the input control element as a reference, based on a predetermined delayed sampling period, delay sampling the terminal voltage of the field effect tube;

[0075] Step S504, performing average filtering on the voltage sampled in each cycle or every preset number of cycles to calculate the minimum voltage value Vmos of the field effect transistor;

[0076] Step S505 , readjusting the input voltage Vcc of the execution circuit to (Vmax-Vmos) according to the minimum voltage value Vmos of the field effect transistor, thereby adjusting the output voltage of the execution circuit.

[0077] In the above embodiment, after the execution circuit outputs constant current, voltage parameter detection is performed, and the target output voltage is calculated based on the voltage parameters, and then the output voltage of the execution circuit is adjusted based on the target output voltage; thereafter, this cycle is repeated to ensure that the entire circuit operates with minimum power consumption, and during the adjustment process, the execution circuit also ensures the constant current output state of the circuit by adjusting the detection control circuit at all times, and more specifically, the control of the constant current output of the execution circuit is achieved by detecting the resistance control subcircuit in the control circuit.

[0078] In this embodiment, an electrical stimulation device 60 is provided. Figure 6 FIG. 6 is a schematic diagram of the structure of the electrical stimulation device 60 of this embodiment. Figure 6 As shown, the electrical stimulation device 60 includes: a detection and control circuit 62 and an execution circuit 64; the detection and control circuit 62 includes a control element; the execution circuit 64 includes a load access terminal; wherein:

[0079] The detection and control circuit 62 is used to control the power of the control element so that the execution circuit 64 outputs a constant current; and when adjusting the execution circuit 64 to output a constant current, the voltage parameter of the control element is obtained, and the output voltage of the execution circuit 64 is adjusted according to the voltage parameter, so that the voltage parameter of the control element meets the preset conditions, and the adjusted output voltage is determined as the target output voltage; wherein the voltage parameter of the control element changes with the output voltage of the execution circuit 64; the execution circuit 64 is used to output an electrical signal under the adjustment of the detection and control circuit 62. Figure 6 In the embodiment, the control element in the detection control circuit 62 is a field effect transistor Q5. Figure 2 and Figure 6 It can be seen that the execution circuit 64 in this embodiment is Figure 2 The main components of the execution circuit 201 are similar and will not be described here. In addition, the pulse width modulation signal PWM1 is input to the execution circuit 64 through the base of the transistor Q1 or the transistor Q4, and the pulse width modulation signal PWM2 is input to the execution circuit 64 through the base of the transistor Q2 or the transistor Q4. Compared with the related art, the detection and control circuit 62 of this embodiment can also collect the voltage parameters of the control element, and then adjust the output voltage of the execution circuit 64. In addition, Figure 6 In the embodiment, the detection and control circuit 62 further includes a resistor Rs connected to the ground terminal. The load access terminal in the execution circuit 64 is connected to the load Z L The two ends are connected.

[0080] The above-mentioned electrical stimulation device 60 can control the power consumption of the regulating element when the execution circuit outputs a constant current, so that even when the electrical stimulation device outputs different load currents, the power consumed by the regulating element can be reduced, thereby preventing the electrical stimulation device from heating, thereby improving the performance of the electrical stimulation device and reducing the overall power consumption of the electrical stimulation device.

[0081] Furthermore, in one embodiment, the detection and control circuit 62 also includes a resistance control subcircuit 621 and a voltage detection subcircuit 622; the resistance control subcircuit 621 is connected to the control element; the voltage detection subcircuit 622 includes a resistance module and an analog-to-digital conversion module, the resistance module is connected in parallel with the control element, and the analog-to-digital conversion module is connected to the resistance module; wherein: the resistance control subcircuit 621 is used to control the on-resistance of the control element, thereby controlling the execution circuit to achieve constant current output; the analog-to-digital conversion module is used to sample the voltage value of the control element through the resistance module to obtain the voltage parameter of the control element.

[0082] Among them, combined Figure 2 and Figure 6 It can be seen that in this embodiment Figure 2 On the basis of Figure 2 The control circuit 202 in the detection control circuit 62 is used as a part of the detection control circuit 62. For example, the digital-to-analog converter DAC and the amplifier OP1 form a resistance control subcircuit 621, and a voltage detection subcircuit 622 is added on this basis. Among them, the voltage detection subcircuit 622 includes a resistance module composed of a resistor R1 and a resistor R2, and an analog-to-digital converter (ADC). In the voltage detection subcircuit 622, the analog-to-digital converter module can be an analog-to-digital converter ADC, which realizes the acquisition of the voltage value of the control element, that is, the field effect tube Q5, through the resistance module, so as to determine the voltage parameter of the control element.

[0083] In this embodiment, by adding a voltage detection subcircuit to the control element, the voltage value of the control element can be collected in time, thereby obtaining a voltage parameter, and then adjusting the output voltage of the execution circuit based on the voltage parameter. Therefore, the voltage detection subcircuit added in this embodiment can help to achieve the ultimate control of the power consumption of the control element.

[0084] Furthermore, in one embodiment, the detection control circuit also includes a microcontroller unit (MCU) and a diode module; the output end of the microcontroller unit is connected to the input end of the microcontroller unit through the diode module; the output end of the microcontroller unit is also connected to the analog-to-digital conversion module; the microcontroller unit is used to output a modulation signal to the diode module, so that the modulation signal is fed back to the input end of the microcontroller unit through the diode module, and is used to determine the moment when the analog-to-digital conversion module triggers sampling of the voltage of the control element according to the modulation signal fed back through the diode module.

[0085] Figure 7 FIG. 1 is a schematic diagram of the composition of the micro-control unit and the diode module in this embodiment. The diode module includes a diode D1 and a diode D2; the analog-to-digital conversion module is Figure 6 The analog-to-digital conversion module in the medium voltage detection subcircuit is connected to the microcontroller unit, and the voltage value of the control element is sampled under the control of the microcontroller unit. Specifically, the input end of the diodes D1 and D2 is connected to the output end of the microcontroller unit (not shown in the figure), and the output end of the diodes D1 and D2 is connected to the input end of the microcontroller unit, so that after the microcontroller unit sends the modulation signal, based on the feedback of the diodes D1 and D2, the rising edge of the modulation signal is detected, and then the analog-to-digital conversion module is controlled to trigger the voltage sampling of the control element based on the rising edge. Specifically, the modulation signal generated by the microcontroller unit includes a pulse width modulation signal PWM1 and a pulse width modulation signal PWM2, PWM1 is fed back to the input end of the microcontroller unit through the diode D1, and PWM2 is fed back to the input end of the microcontroller unit through the diode D2.

[0086] When the microcontroller generates a modulation signal, it can only determine the period and pulse width of the modulation signal, but cannot know the time corresponding to the edge of the modulation signal, that is, the microcontroller cannot know the time corresponding to the rising edge and falling edge of the modulation signal in each period. Therefore, based on the relevant technology, this embodiment sets a diode module between the input and output ends of the microcontroller, so that after the microcontroller generates and outputs the modulation signal, it is fed back to the input end of the microcontroller through the diode module, so that the microcontroller can accurately know the time of the rising edge of the modulation signal, and then successfully implement the voltage sampling of the control element.

[0087] In addition, in one embodiment, the execution circuit 64 further includes a boost circuit ( Figure 6 not shown). Figure 8 Schematic diagram of boosting of the execution circuit 64 in this embodiment. The boosting circuit 80 can be implemented by a boosting chip, or can be a circuit with boosting function composed of multiple components based on a general method. Figure 8The boost circuit 80 is connected to the power supply BT to boost the voltage provided by the power supply to obtain the voltage value Vcc of the execution circuit. In addition, the boost circuit is also connected to the micro control unit to receive the control signal of the micro control unit and adjust the output voltage of the execution circuit based on the control signal.

[0088] Specifically, in one embodiment, the microcontroller unit is further used to send a control signal formed by the voltage parameter detected by the voltage detection subcircuit 622 to the boost circuit 80; the boost circuit 80 is used to adjust the output voltage of the execution circuit 64 according to the control signal. This embodiment can adjust the output voltage of the execution circuit based on the microcontroller unit and the boost circuit, thereby controlling the power consumed by the control element.

[0089] It should be understood that the specific embodiments described herein are only used to explain the application, rather than to limit it. Based on the embodiments provided in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of this application.

[0090] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties.

[0091] Obviously, the drawings are only some examples or embodiments of the present application. For ordinary technicians in the field, the present application can also be applied to other similar situations based on these drawings without creative work. In addition, it is understandable that although the work done in this development process may be complicated and lengthy, for ordinary technicians in the field, certain changes in design, manufacturing or production based on the technical content disclosed in this application are only conventional technical means and should not be regarded as insufficient content disclosed in this application.

[0092] The term "embodiment" in this application refers to a specific feature, structure or characteristic described in conjunction with the embodiment that can be included in at least one embodiment of the present application. The appearance of this phrase in various locations in the specification does not necessarily mean the same embodiment, nor does it mean that it is mutually exclusive with other embodiments and is independent or optional. It is clearly or implicitly understood by those of ordinary skill in the art that the embodiments described in this application can be combined with other embodiments without conflict.

[0093] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of patent protection. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the scope of protection of the present application. Therefore, the scope of protection of the present application shall be subject to the attached claims.

Claims

1. A voltage regulation method for an electrical stimulation device, characterized in that: The electrical stimulation device comprises an execution circuit and a detection and control circuit, the detection and control circuit comprises a control element, and the method comprises: When the detection and control circuit adjusts the execution circuit to output a constant current, obtaining a voltage parameter of the control element; The output voltage of the execution circuit is adjusted according to the voltage parameter so that the voltage parameter of the control element meets the preset conditions, and the adjusted output voltage is determined as the target output voltage; wherein the voltage parameter of the control element changes with the output voltage of the execution circuit.

2. The voltage regulation method according to claim 1, characterized in that: When the detection and control circuit adjusts the execution circuit to output a constant current, obtaining the voltage parameter of the control element includes: When the detection and control circuit adjusts the execution circuit to output a constant current, based on the cycle of the voltage change of the control element, the target voltage of each corresponding cycle of the control element in multiple cycles is collected; wherein the target voltage is the lowest voltage in the cycle; An average value is calculated for the multiple target voltages collected to obtain a voltage average value, and the voltage average value is determined as the voltage parameter.

3. The voltage regulation method according to claim 2, characterized in that: When the detection and control circuit adjusts the execution circuit to output a constant current, based on the cycle of the voltage change of the control element, collecting the target voltage of each corresponding cycle of the control element in multiple cycles, includes: When the detection and control circuit adjusts the execution circuit to output a constant current, according to the periodic characteristics of the voltage change of the control element, a delayed sampling period is determined from the period of the voltage change of the control element; Determining, according to the delayed sampling period, a sampling time for sampling the voltage of the regulating element in each corresponding cycle in a plurality of cycles; According to the sampling time, the voltage of the regulating element in the multiple cycles is sampled, and the sampled voltage is used as the target voltage of the regulating element in the corresponding cycle.

4. The voltage regulation method according to claim 3, characterized in that: Determining the sampling time for sampling the voltage of the regulating element in each corresponding cycle in a plurality of cycles according to the delayed sampling period includes: Obtaining the rising edge time of the modulation signal input to the control element; A moment after the rising edge moment and separated from the rising edge moment by the delayed sampling period is used as a sampling moment for sampling the voltage of the regulating element.

5. The voltage regulation method according to claim 3, characterized in that: When the detection and control circuit adjusts the execution circuit to output a constant current, the delayed sampling period is determined from the period of the voltage change of the control element according to the periodic characteristics of the voltage change of the control element, including: Acquiring a pulse width of a modulation signal input to the regulating element and a sampling delay value of the regulating element; According to the pulse width and the sampling delay value, a delayed sampling period is determined from the cycle of the voltage change of the regulating element.

6. An electrical stimulation device, characterized in that: include: Detection control circuit and execution circuit; The detection and regulation circuit includes a regulation element; The execution circuit includes a load access terminal; wherein: The detection and control circuit is used to control the power of the control element so that the execution circuit performs constant current output; and is used to obtain the voltage parameter of the control element when adjusting the execution circuit to perform constant current output, and adjust the output voltage of the execution circuit according to the voltage parameter, so that the voltage parameter of the control element meets the preset conditions, and the adjusted output voltage is determined as the target output voltage; wherein the voltage parameter of the control element changes with the output voltage of the execution circuit; The execution circuit is used to output an electrical signal under the regulation of the detection and control circuit.

7. The electrical stimulation device according to claim 6, characterized in that The detection and control circuit further includes a resistance control subcircuit and a voltage detection subcircuit; the resistance control subcircuit is connected to the control element; the voltage detection subcircuit includes a resistance module and an analog-to-digital conversion module, the resistance module is connected in parallel to the control element, and the analog-to-digital conversion module is connected to the resistance module; wherein: The resistance control subcircuit is used to control the on-resistance of the regulating element; The analog-to-digital conversion module is used to sample the voltage value of the regulating element through the resistance module to obtain the voltage parameter of the regulating element.

8. The electrical stimulation device according to claim 7, characterized in that The detection control circuit also includes a micro control unit and a diode module; the output end of the micro control unit is connected to the input end of the micro control unit through the diode module; the output end of the micro control unit is also connected to the analog-to-digital conversion module; The microcontroller unit is used to output a modulation signal to the diode module so that the modulation signal is fed back to the input end of the microcontroller unit through the diode module, and is used to determine the moment when the analog-to-digital conversion module triggers sampling of the voltage of the control element based on the modulation signal fed back through the diode module.

9. The electrical stimulation device according to claim 8, characterized in that The execution circuit further includes a voltage boost circuit.

10. The electrical stimulation device according to claim 9, characterized in that The microcontroller unit is also used to send a control signal formed by the voltage parameter detected by the voltage detection subcircuit to the boost circuit; the boost circuit is used to adjust the output voltage of the execution circuit according to the control signal.

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