Potentiometer-based bio-electricity signal output method, device and equipment and storage medium

Abstract

The invention relates to the technical field of signal processing, and provides a potentiometer-based bio-electricity signal output method, which comprises the following steps of: controlling to generate a standard bio-electricity waveform signal, and converting the standard bio-electricity waveform signal into an analog signal through a digital-to-analog converter; copying the analog signal to a plurality of output channels, wherein each output channel is connected in series with at least one digital potentiometer; according to user setting or system feedback data, the resistance value of each digital potentiometer is dynamically adjusted, and each channel is controlled to output a target bio-electricity signal. After analog conversion and multi-channel copying are carried out on bioelectricity waveform signals, signal amplitude adjustment is achieved on the basis of resistance adjustment of digital potentiometers in all output channels, and the problems that in the prior art, multi-channel bioelectricity signals are low in adjustment precision and poor in consistency are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of biomedical engineering, and particularly to a method, device, equipment and storage medium for outputting bioelectric signals based on a potentiometer. Background Art

[0002] Existing bioelectric stimulation devices mostly use fixed resistors or analog potentiometers to adjust the output level, but there are problems such as low adjustment accuracy, poor consistency, and weak channel expansion ability, making it difficult to meet the requirements of multi-channel, high consistency, and dynamic adjustment ability in complex physiological electric signal stimulation. Summary of the Invention

[0003] Embodiments of the present application provide a method, device, equipment and storage medium for outputting bioelectric signals based on a potentiometer, aiming to solve the problems of low adjustment accuracy and poor consistency of multi-channel signals in the prior art.

[0004] In a first aspect, embodiments of the present application provide a method for outputting bioelectric signals based on a potentiometer, including:

[0005] Controlling the generation of a standard bioelectric waveform signal and converting it into an analog signal through a digital-to-analog converter;

[0006] Copying the analog signal to multiple output channels, and at least one digital potentiometer is connected in series in each output channel;

[0007] According to user settings or system feedback data, dynamically adjusting the resistance values of the digital potentiometers to control the output of target bioelectric signals for each channel.

[0008] In an embodiment, the copying the analog signal to multiple output channels includes:

[0009] After stabilizing the analog signal through a buffer circuit, copying it to the multiple output channels through an analog shunt network.

[0010] In an embodiment, the buffer circuit includes a voltage follower, the voltage follower includes an operational amplifier, the non-inverting input terminal of the operational amplifier is connected to the output terminal of the digital-to-analog converter, and the output terminal of the operational amplifier is connected to the inverting input terminal of the operational amplifier through negative feedback to form a unity gain configuration.

[0011] In one embodiment, the analog shunt network includes a multi-stage buffer isolation module and a plurality of controllable channel gain modules; the multi-stage buffer isolation module includes a main buffer and a channel isolation buffer array; the main buffer is located at the output end of the buffer circuit and is used to uniformly adjust the amplitude of the output signal of the buffer circuit; the channel isolation buffer array includes a plurality of channel-independent operational amplifiers, and each of the channel-independent operational amplifiers is respectively used to buffer the output signal of the main buffer; each of the controllable channel gain modules is connected in series with each channel-independent operational amplifier and is used to adjust the level range of the output signal of each channel-independent operational amplifier.

[0012] In one embodiment, the user-set or system-feedback data includes: the signal parameters of the output signals of each channel;

[0013] Dynamically adjusting the resistance values of each of the digital potentiometers according to the user-set or system-feedback data to control the output of the target bioelectric signal for each channel includes:

[0014] Comparing the signal parameters of the output signals of each channel with the bioelectric signals currently transmitted by each channel, and calculating the target resistance values of the digital potentiometers required for each channel;

[0015] Adjusting the resistance values of each of the digital potentiometers respectively according to the target resistance values, obtaining the target bioelectric signal for each channel, and outputting the same.

[0016] In one embodiment, the digital potentiometer includes a programmable resistor network, and the programmable resistor network includes a control interface, a fixed resistor, and an adjustable resistor.

[0017] In one embodiment, the voltage at the output end of the digital potentiometer satisfies:

[0018] where, V out represents the output voltage of the digital potentiometer, V in represents the input voltage of the digital potentiometer, R wiper represents the resistance value of the adjustable resistor, R total represents the resistance value of the fixed resistor.

[0019] In a second aspect, an embodiment of the present application provides a bioelectric signal output device based on a potentiometer, including:

[0020] A generation module, configured to control the generation of a standard bioelectric waveform signal and convert it into an analog signal through a digital-to-analog converter;

[0021] A replication module, configured to replicate the analog signal to a plurality of output channels, and at least one digital potentiometer is connected in series to each of the output channels;

[0022] A control module, configured to dynamically adjust the resistance values of each of the digital potentiometers according to user settings or system feedback data, and control each channel to output a target bioelectric signal.

[0023] In one embodiment, the replication module is specifically configured to:

[0024] After stabilizing the analog signal through a buffer circuit, replicate it to the multiple output channels through an analog shunt network.

[0025] In one embodiment, the buffer circuit includes a voltage follower, the voltage follower includes an operational amplifier, the non-inverting input terminal of the operational amplifier is connected to the output terminal of the digital-to-analog converter, and the output terminal of the operational amplifier is connected to the inverting input terminal of the operational amplifier through negative feedback, forming a unity gain configuration.

[0026] In one embodiment, the analog shunt network includes multiple levels of buffer isolation modules and multiple controllable channel gain modules; the multiple levels of buffer isolation modules include a main buffer and a channel isolation buffer array; the main buffer is located at the output terminal of the buffer circuit and is used to uniformly adjust the amplitude of the output signal of the buffer circuit; the channel isolation buffer array includes multiple channel-independent operational amplifiers, and each of the channel-independent operational amplifiers is respectively used to buffer the output signal of the main buffer; each of the controllable channel gain modules is connected in series with each channel-independent operational amplifier respectively and is used to adjust the level range of the output signal of each channel-independent operational amplifier.

[0027] In one embodiment, the user settings or system feedback data includes: signal parameters of the output signals of each channel;

[0028] The control module includes:

[0029] A comparison unit, configured to compare the signal parameters of the output signals of each channel with the bioelectric signals currently transmitted by each channel, and calculate the target resistance values of the digital potentiometers required for each channel;

[0030] An obtaining unit, configured to respectively adjust the resistance values of each of the digital potentiometers according to the target resistance values, obtain the target bioelectric signals of each channel, and output them.

[0031] In one embodiment, the digital potentiometer includes a programmable resistor network, and the programmable resistor network includes a control interface, fixed resistors, and adjustable resistors.

[0032] In one embodiment, the voltage at the output terminal of the digital potentiometer satisfies:

[0033] where, V out represents the output voltage of the digital potentiometer, V in represents the input voltage of the digital potentiometer, Rwiper represents the resistance value of the adjustable resistor, R total represents the resistance value of the fixed resistor.

[0034] In a third aspect, an embodiment of the present application provides an electronic device, including:

[0035] a memory and a processing module;

[0036] The memory is used to store a computer program;

[0037] The processing module is configured to execute the computer program and, when executing the computer program, implement the steps of the potentiometer-based bioelectric signal output method in the first aspect above.

[0038] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium storing a computer program;

[0039] When the computer program is executed by one or more processing modules, the one or more processing modules are caused to execute the steps of the potentiometer-based bioelectric signal output method in the first aspect above.

[0040] The embodiment of the present application provides a potentiometer-based bioelectric signal output method, apparatus, device and storage medium. Among them, the potentiometer-based bioelectric signal output method includes: controlling the generation of a standard bioelectric waveform signal and converting it into an analog signal through a digital-to-analog converter; copying the analog signal to multiple output channels, and at least one digital potentiometer is connected in series in each output channel; dynamically adjusting the resistance values of each digital potentiometer according to user settings or system feedback data to control the output of the target bioelectric signal in each channel. After the analog conversion and multi-channel copying of the bioelectric waveform signal, the signal amplitude is adjusted by adjusting the resistance value of the digital potentiometer in each output channel, so as to solve the problems of low adjustment accuracy and poor consistency of multi-channel bioelectric signals in the prior art. Description of the Drawings

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0042] Figure 1 is a schematic flowchart of the potentiometer-based bioelectric signal output method provided by the embodiment of the present application;

[0043] Figure 2 is a schematic circuit structure diagram of a programmable resistor network provided by an embodiment of the present application;

[0044] Figure 3 Schematic diagram of the bioelectrical signal output device based on a potentiometer provided by an embodiment of the present application;

[0045] Figure 4 Schematic block diagram of the bioelectrical signal output device based on a potentiometer provided by an embodiment of the present application. Detailed implementation manners

[0046] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0047] The flowchart shown in the accompanying drawings is only an example illustration, and does not necessarily include all contents and operations / steps, nor does it necessarily need to be executed in the described order. For example, some operations / steps can also be decomposed, combined or partially merged, so the actual execution order may be changed according to the actual situation.

[0048] It should also be understood that the terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the specification of the present application and the appended claims, unless the context clearly indicates otherwise, the singular forms of "a", "an" and "the" are intended to include the plural forms.

[0049] It should be further understood that the term " / and" used in the specification of the present application and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0050] The technical solutions provided by the present application will be described in detail below in conjunction with the accompanying drawings.

[0051] Please refer to Figure 1 , Figure 1 which is a schematic flowchart of the bioelectrical signal output method based on a potentiometer provided by an embodiment of the present application. The bioelectrical signal output method based on a potentiometer provided by an embodiment of the present application is implemented by a bioelectrical signal output device based on a potentiometer. Among them, no limitation is made to the bioelectrical signal output device based on a potentiometer in the embodiments of the present application. Specifically, as Figure 1 shown, the bioelectrical signal output method based on a potentiometer includes steps S101 to step S103. Details are as follows:

[0052] S101: Control to generate a standard bioelectrical waveform signal and convert it into an analog signal through a digital-to-analog converter.

[0053] By generating a unified standard bioelectrical signal waveform such as an EMG signal or an electromyostimulation signal waveform, and converting the bioelectrical waveform signal into an analog signal through a digital-to-analog converter, it is used as the source signal for all output channels. This ensures that all channels are based on the same waveform structure, improves the overall coordination and consistency, and avoids effect errors caused by differences in waveform sources.

[0054] Exemplarily, a digital waveform corresponding to a bioelectrical signal with a unified format and parameters (supporting parameter configuration, such as frequency, amplitude, period, or duty cycle, etc.) is generated by a digital signal processor such as a DSP, FPGA, MCU, or host computer software. This waveform can be a square wave, triangular wave, sine wave, or any custom waveform. The digital waveform is input into a digital-to-analog converter to convert it into a continuously varying analog voltage signal, which is used as the source signal (also called the reference signal) for the subsequent multi-channel output system.

[0055] S102: Copy the analog signal to multiple output channels, and at least one digital potentiometer is connected in series to each of the output channels.

[0056] In one embodiment, the step of copying the analog signal to multiple output channels includes: after stabilizing the analog signal through a buffer circuit, copying it to the multiple output channels through an analog shunt network.

[0057] After the analog signal is output, voltage stabilization processing is first performed through a buffer circuit to avoid output instability caused by changes in the load of the digital-to-analog converter.

[0058] In one embodiment, the buffer circuit preferably uses a voltage follower. The voltage follower includes an operational amplifier. The non-inverting input terminal of the operational amplifier is connected to the output terminal of the digital-to-analog converter, and the output terminal of the operational amplifier is connected to the inverting input terminal of the operational amplifier through negative feedback to form a unity gain configuration. Thus, a buffering effect with a high input impedance and a low output impedance is achieved, ensuring the integrity of the analog signal.

[0059] Furthermore, to achieve a stable amplitude of the analog signal among multiple channels, the output terminal of the buffer circuit is connected to an analog shunt network.

[0060] In one embodiment, the analog shunt network includes a multi-stage buffer isolation module and multiple controllable channel gain modules. Among them, the multi-stage buffer isolation module includes a main buffer and a channel isolation buffer array; the main buffer is located at the output end of the buffer circuit and is used to uniformly adjust the amplitude of the output signal of the buffer circuit; the channel isolation buffer array includes multiple channel-independent operational amplifiers, and each of the channel-independent operational amplifiers is respectively used to buffer the output signal of the main buffer to achieve electrical isolation between channels. Further, a controllable channel gain module is connected in series to each output channel, and each of the controllable channel gain modules includes at least one digital potentiometer, which is connected in series with each channel-independent operational amplifier respectively and is used to adjust the level range of the output signal of each channel-independent operational amplifier. By configuring different potentiometer resistance values for each digital potentiometer, it is used to precisely control the voltage or current output of each channel and achieve personalized setting of the output levels of different channels to meet the requirements for signal strength differences in different usage scenarios.

[0061] Through the combined design of unified generation of standard signals, stable buffering, isolated shunting, and adjustable channel gain, a multi-channel bioelectric signal output system with high consistency, high stability, and personalized regulation capabilities can be realized, which is applicable to various scenarios, especially suitable for bioelectric signal applications that require both synchronous control and differential output.

[0062] S103: Dynamically adjust the resistance values of each of the digital potentiometers according to user settings or system feedback data to control the output of the target bioelectric signal for each channel.

[0063] In one embodiment, the user settings or system feedback data includes: the signal parameters of the output signals of each channel. The dynamically adjusting the resistance values of each of the digital potentiometers according to user settings or system feedback data to control the output of the target bioelectric signal for each channel includes: comparing the signal parameters of the output signals of each channel with the bioelectric signals currently transmitted by each channel, calculating the target resistance values of the digital potentiometers required for each channel; respectively adjusting the resistance values of each of the digital potentiometers according to the target resistance values to obtain the target bioelectric signal for each channel and output it.

[0064] In one embodiment, as Figure 2 shown, Figure 2 is a schematic circuit diagram of a programmable resistance network provided by an embodiment of the present application. In the present application, the digital potentiometer includes a programmable resistance network, and from Figure 2 it can be seen that the programmable resistance network 210, the programmable resistance network 210 includes a control interface 211, a fixed resistor 212, and a variable resistor 213. This programmable resistance network 210 allows precise control of the resistance value of the variable resistor 213 through the control interface 211, thereby dynamically adjusting the output voltage.

[0065] In one embodiment, the voltage at the output end of the digital potentiometer 20 satisfies:

[0066] where V out represents the output voltage of the digital potentiometer, V in represents the input voltage of the digital potentiometer, R wiper represents the resistance value of the adjustable resistor, and R total represents the resistance value of the fixed resistor.

[0067] By adjusting the resistance value of the adjustable resistor, the output voltage of the digital potentiometer is accurately controlled, thereby indirectly controlling the level of the bioelectric signals output by each channel.

[0068] As can be seen from the above analysis, the bioelectric signal output method based on a potentiometer provided by the embodiment of the present application includes: controlling the generation of a standard bioelectric waveform signal and converting it into an analog signal through a digital-to-analog converter; copying the analog signal to multiple output channels, and at least one digital potentiometer is connected in series to each of the output channels; according to user settings or system feedback data, dynamically adjusting the resistance values of the digital potentiometers to control the output of the target bioelectric signals by each channel. After the analog conversion and multi-channel copying of the bioelectric waveform signal, the adjustment of the signal amplitude is achieved by adjusting the resistance values of the digital potentiometers based on each output channel, so as to solve the problems of low adjustment accuracy and poor consistency of multi-channel bioelectric signals in the prior art.

[0069] Please refer to Figure 3 shown in Figure 3 which is a schematic structural diagram of a bioelectric signal output device based on a potentiometer provided by the embodiment of the present application. It can be seen from Figure 3 that the bioelectric signal output device 30 provided by the embodiment of the present application includes:

[0070] A generation module 310, configured to control the generation of a standard bioelectric waveform signal and convert it into an analog signal through a digital-to-analog converter;

[0071] A copying module 320, configured to copy the analog signal to multiple output channels, and at least one digital potentiometer is connected in series to each of the output channels;

[0072] A control module 330, configured to dynamically adjust the resistance values of the digital potentiometers according to user settings or system feedback data, and control the output of the target bioelectric signals by each channel.

[0073] In one embodiment, the copying module 320 is specifically configured to:

[0074] After stabilizing the analog signal through a buffer circuit, copy it to the multiple output channels through an analog shunt network.

[0075] In one embodiment, the buffer circuit includes a voltage follower, and the voltage follower includes an operational amplifier. The non-inverting input terminal of the operational amplifier is connected to the output terminal of the digital-to-analog converter, and the output terminal of the operational amplifier is connected to the inverting input terminal of the operational amplifier through negative feedback, forming a unity-gain configuration.

[0076] In one embodiment, the analog shunt network includes a multi-stage buffer isolation module and a plurality of controllable channel gain modules; the multi-stage buffer isolation module includes a main buffer and a channel isolation buffer array; the main buffer is located at the output terminal of the buffer circuit and is used to uniformly adjust the amplitude of the output signal of the buffer circuit; the channel isolation buffer array includes a plurality of channel-independent operational amplifiers, and each of the channel-independent operational amplifiers is respectively used to buffer the output signal of the main buffer; each of the controllable channel gain modules is connected in series with each of the channel-independent operational amplifiers and is used to adjust the level range of the output signal of each of the channel-independent operational amplifiers.

[0077] In one embodiment, the user-set or system-feedback data includes: signal parameters of the output signals of each channel;

[0078] The control module 330 includes:

[0079] A comparison unit, configured to compare the signal parameters of the output signals of each channel with the bioelectric signals currently transmitted by each channel, and calculate the target resistance values of the digital potentiometers required for each channel;

[0080] An obtaining unit, configured to respectively adjust the resistance values of each of the digital potentiometers according to the target resistance values, obtain the target bioelectric signals of each channel, and output them.

[0081] In one embodiment, the digital potentiometer includes a programmable resistor network, and the programmable resistor network includes a control interface, a fixed resistor, and a variable resistor.

[0082] In one embodiment, the voltage at the output terminal of the digital potentiometer satisfies:

[0083] where, V out represents the output voltage of the digital potentiometer, V in represents the input voltage of the digital potentiometer, R wiper represents the resistance value of the variable resistor, and R total represents the resistance value of the fixed resistor.

[0084] It should be noted that the specific implementation processes of the above-mentioned modules or units can refer to the specific implementation processes of the steps in the foregoing method embodiments, which will not be elaborated herein.

[0085] Please refer to Figure 4 as shown,Figure 4 Schematic block diagram of a potentiometer-based bioelectric signal output device provided by an embodiment of the present application.

[0086] Exemplarily, the potentiometer-based bioelectric signal output device 40 includes a processing module 401 and a memory 402.

[0087] Exemplarily, the processing module 401 and the memory 402 are connected by a bus 403, and the bus 403 is, for example, an I2C (Inter-integrated Circuit) bus.

[0088] Specifically, the processing module 401 can be a microcontroller unit (MCU), a central processing unit (CPU), a digital signal processing module (DSP), etc.

[0089] Specifically, the memory 402 can be a Flash chip, a read-only memory (ROM), a magnetic disk, an optical disc, a USB flash drive, a mobile hard disk, etc.

[0090] Among them, the processing module 401 is used to run the computer program stored in the memory 402, and when the computer program is executed, the steps of the above-mentioned potentiometer-based bioelectric signal output method are implemented.

[0091] Exemplarily, the processing module 401 is used to run the computer program stored in the memory 402, and when the computer program is executed, the following steps are implemented:

[0092] Control the generation of a standard bioelectric waveform signal and convert it into an analog signal through a digital-to-analog converter;

[0093] Copy the analog signal to multiple output channels, and at least one digital potentiometer is connected in series to each output channel;

[0094] According to user settings or system feedback data, dynamically adjust the resistance values of each digital potentiometer to control the output of the target bioelectric signal for each channel.

[0095] In one embodiment, the copying the analog signal to multiple output channels includes:

[0096] After stabilizing the analog signal through a buffer circuit, copy the analog signal to the multiple output channels through an analog shunt network.

[0097] In one embodiment, the buffer circuit includes a voltage follower, and the voltage follower includes an operational amplifier. The non-inverting input terminal of the operational amplifier is connected to the output terminal of the digital-to-analog converter, and the output terminal of the operational amplifier is connected to the inverting input terminal of the operational amplifier through negative feedback, forming a unity-gain configuration.

[0098] In one embodiment, the analog shunt network includes a multi-stage buffer isolation module and a plurality of controllable channel gain modules; the multi-stage buffer isolation module includes a main buffer and a channel isolation buffer array; the main buffer is located at the output terminal of the buffer circuit and is used to uniformly adjust the amplitude of the output signal of the buffer circuit; the channel isolation buffer array includes a plurality of channel-independent operational amplifiers, and each of the channel-independent operational amplifiers is respectively used to buffer the output signal of the main buffer; each of the controllable channel gain modules is respectively connected in series with each channel-independent operational amplifier and is used to adjust the level range of the output signal of each channel-independent operational amplifier.

[0099] In one embodiment, the user-set or system-feedback data includes: signal parameters of the output signals of each channel;

[0100] Dynamically adjusting the resistance values of each of the digital potentiometers according to the user-set or system-feedback data to control the output of the target bioelectric signals of each channel includes:

[0101] Comparing the signal parameters of the output signals of each channel with the bioelectric signals currently transmitted by each channel, and calculating the target resistance values of the digital potentiometers required for each channel;

[0102] According to the target resistance values, respectively adjusting the resistance values of each of the digital potentiometers to obtain the target bioelectric signals of each channel and output them.

[0103] In one embodiment, the digital potentiometer includes a programmable resistor network, and the programmable resistor network includes a control interface, a fixed resistor, and an adjustable resistor.

[0104] In one embodiment, the voltage at the output terminal of the digital potentiometer satisfies:

[0105] where, V out represents the output voltage of the digital potentiometer, V in represents the input voltage of the digital potentiometer, R wiper represents the resistance value of the adjustable resistor, R total represents the resistance value of the fixed resistor.

[0106] The specific principle and implementation manner of the bioelectric signal output device based on a potentiometer provided in the embodiments of the present application are similar to those of the bioelectric signal output method based on a potentiometer in the foregoing embodiments, and will not be elaborated here.

[0107] An embodiment of the present application further provides a computer-readable storage medium. The computer-readable storage medium stores a computer program. When the computer program is executed by a processing module, the processing module implements the following steps:

[0108] Control the generation of a standard bioelectric waveform signal and convert it into an analog signal through a digital-to-analog converter;

[0109] Copy the analog signal to multiple output channels, and at least one digital potentiometer is connected in series to each of the output channels;

[0110] According to user settings or system feedback data, dynamically adjust the resistance values of the digital potentiometers to control the output of target bioelectric signals for each channel.

[0111] In one embodiment, the copying the analog signal to multiple output channels includes:

[0112] After stabilizing the analog signal through a buffer circuit, copy it to the multiple output channels through an analog shunt network.

[0113] In one embodiment, the buffer circuit includes a voltage follower, which includes an operational amplifier. The non-inverting input terminal of the operational amplifier is connected to the output terminal of the digital-to-analog converter, and the output terminal of the operational amplifier is connected to the inverting input terminal of the operational amplifier through negative feedback to form a unity gain configuration.

[0114] In one embodiment, the analog shunt network includes multiple buffer isolation modules and multiple controllable channel gain modules; the multiple buffer isolation modules include a main buffer and a channel isolation buffer array; the main buffer is located at the output terminal of the buffer circuit and is used to uniformly adjust the amplitude of the output signal of the buffer circuit; the channel isolation buffer array includes multiple channel-independent operational amplifiers, and each of the channel-independent operational amplifiers is respectively used to buffer the output signal of the main buffer; each of the controllable channel gain modules is respectively connected in series with each channel-independent operational amplifier and is used to adjust the level range of the output signal of each channel-independent operational amplifier.

[0115] In one embodiment, the user settings or system feedback data includes: signal parameters of the output signals of each channel;

[0116] The dynamically adjusting the resistance values of the digital potentiometers according to user settings or system feedback data to control the output of target bioelectric signals for each channel includes:

[0117] Compare the signal parameters of the output signals of each channel with the bioelectric signals currently transmitted by each channel, and calculate the target resistance values of the digital potentiometers required for each channel;

[0118] According to the target resistance value, adjust the resistance values of the respective digital potentiometers to obtain the target bioelectrical signals of each channel, and output them.

[0119] In one embodiment, the digital potentiometer includes a programmable resistor network, and the programmable resistor network includes a control interface, fixed resistors, and adjustable resistors.

[0120] In one embodiment, the voltage at the output end of the digital potentiometer satisfies:

[0121] where V out represents the output voltage of the digital potentiometer, V in represents the input voltage of the digital potentiometer, R wiper represents the resistance value of the adjustable resistor, and R total represents the resistance value of the fixed resistor.

[0122] Among them, the computer-readable storage medium may be an internal storage unit of the potentiometer-based bioelectrical signal output device in the foregoing embodiments, such as the hard disk or memory of the potentiometer-based bioelectrical signal output device. The computer-readable storage medium may also be an external storage device of the potentiometer-based bioelectrical signal output device, such as a plug-in hard disk equipped on the potentiometer-based bioelectrical signal output device, a Smart Media Card (SMC), a Secure Digital (SD) card, a Flash Card, etc.

[0123] It should be understood that the terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0124] It should also be understood that the term "and / or" used in this application and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0125] As described above, the above are only the specific embodiments of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed in this application can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims

1. A bioelectric signal output method based on a potentiometer, characterized in that: include: Control and generate standard bioelectric waveform signals and convert them into analog signals through digital-to-analog converters; Copying the analog signal to a plurality of output channels, each of the output channels being connected in series with at least one digital potentiometer; According to user settings or system feedback data, the resistance value of each digital potentiometer is dynamically adjusted to control each channel to output the target bioelectric signal.

2. The bioelectric signal output method based on a potentiometer according to claim 1, characterized in that: The step of copying the analog signal to a plurality of output channels comprises: After the analog signal is stabilized by a buffer circuit, it is copied to the multiple output channels through an analog shunt network.

3. The bioelectric signal output method based on a potentiometer according to claim 2, characterized in that: The buffer circuit includes a voltage follower, which includes an operational amplifier. The non-inverting input of the operational amplifier is connected to the output of the digital-to-analog converter, and the output of the operational amplifier is connected to the inverting input of the operational amplifier through negative feedback to form a unit gain configuration.

4. The bioelectric signal output method based on a potentiometer according to claim 3, characterized in that: The analog shunt network includes a multi-stage buffer isolation module and multiple controllable channel gain modules; the multi-stage buffer isolation module includes a main buffer and a channel isolation buffer array; the main buffer is located at the output end of the buffer circuit and is used to uniformly adjust the amplitude of the output signal of the buffer circuit; the channel isolation buffer array includes multiple channel independent operational amplifiers, each of which is used to buffer the output signal of the main buffer; each controllable channel gain module is connected in series with each channel independent operational amplifier and is used to adjust the level range of the output signal of each channel independent operational amplifier.

5. The bioelectric signal output method based on a potentiometer according to claim 1, characterized in that: The user setting or system feedback data includes: signal parameters of the output signal of each channel; The method of dynamically adjusting the resistance of each digital potentiometer according to user settings or system feedback data to control each channel to output a target bioelectric signal includes: Comparing the signal parameters of the output signals of each channel with the bioelectrical signals currently transmitted by each channel, and calculating the target resistance value of the digital potentiometer required for each channel; According to the target resistance, the resistance of each digital potentiometer is adjusted respectively to obtain the target bioelectric signal of each channel and output it.

6. The bioelectric signal output method based on a potentiometer according to claim 5, characterized in that: The digital potentiometer includes a programmable resistor network, which includes a control interface, a fixed resistor and an adjustable resistor.

7. The bioelectric signal output method based on a potentiometer according to claim 6, characterized in that: The voltage at the output of the digital potentiometer satisfies: Among them, V out Represents the output voltage of the digital potentiometer, V in Represents the input voltage of the digital potentiometer, R wiper Indicates the resistance of the adjustable resistor, R total Indicates the resistance value of a fixed resistor.

8. A bioelectric signal output device based on a potentiometer, characterized in that: include: A generation module, used to control the generation of a standard bioelectric waveform signal and convert it into an analog signal through a digital-to-analog converter; A copy module, used for copying the analog signal to multiple output channels, each of the output channels is connected in series with at least one digital potentiometer; The control module is used to dynamically adjust the resistance value of each digital potentiometer according to user settings or system feedback data, and control each channel to output the target bioelectric signal.

9. An electronic device, characterized in that: include: Memory and processing modules; The memory is used to store computer programs; The processing module is used to execute the computer program and implement the steps of the bioelectric signal output method based on a potentiometer as described in any one of claims 1 to 7 when executing the computer program.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program; When the computer program is executed by one or more processing modules, the one or more processing modules execute the steps of the bioelectric signal output method based on a potentiometer as described in any one of claims 1 to 7.

Images