Multi-mode bioelectricity detection practical training equipment and practical training method

Abstract

The invention relates to the field of practical training teaching, and provides a multi-mode bioelectricity detection practical training device and a practical training method in order to solve the problem of how to reduce the equipment cost of bioelectricity physiological detection practical training. The invention provides multi-mode bioelectricity detection practical training equipment, which comprises at least one bioelectricity signal sensor module, at least one bioelectricity signal isolation module, at least one amplification module, at least one filtering module, at least one analog-to-digital conversion module and a module replacement interface, and the module replacement interface comprises any one or combination of more of the following interfaces: a sensor replacement interface, a signal isolation replacement interface, an amplification replacement interface, a filtering replacement interface and an analog-to-digital conversion replacement interface. According to the practical training equipment provided by the embodiment of the invention, the practical training requirements of bioelectrophysiological detection of multiple detection targets can be met through one practical training equipment, so that the equipment cost of the practical training of the bioelectrophysiological detection is reduced.

Description

Technical Field

[0001] This application relates to the field of practical training and teaching, and in particular to training equipment and methods for multimodal bioelectric detection. Background Technology

[0002] In terms of talent cultivation, practical teaching and training (hereinafter referred to as "practical training") is a practical teaching component in the teaching process that focuses on cultivating students' professional practical skills and job adaptability. Unlike conventional experimental teaching methods that emphasize theoretical verification, practical training is based on students' hands-on operation and emphasizes "learning by doing." Students develop proficient professional skills through repeated practice, rather than simply observing or recording experimental phenomena.

[0003] For bioelectrophysiological testing, practical training equipment is needed to provide students with the necessary facilities. Since bioelectrophysiological testing requires the selection of specialized equipment for different testing objectives, multiple different training devices for different objectives need to be provided to students during the training phase, which increases the equipment cost for bioelectrophysiological testing training.

[0004] Therefore, in order to address the issue of how to reduce the equipment cost for bioelectrophysiological testing training, a training device for bioelectrophysiological testing is needed. Summary of the Invention

[0005] To address the issue of reducing equipment costs for bioelectric physiological testing training, this application provides a multimodal bioelectrical testing training device and training method.

[0006] Specifically, the embodiments of this application adopt the following technical solutions: In a first aspect, this application provides a multimodal bioelectric detection training device, the device comprising: At least one bioelectric signal sensor module, which is used to acquire bioelectric signals from the human body; At least one bioelectric signal isolation module is provided, which is used to isolate the bioelectric signal sensor module. At least one amplification module is provided, which is used to amplify the bioelectric signals acquired by the bioelectric signal sensor module. At least one filtering module is provided, which is used to filter the amplification result of the amplification module. At least one analog-to-digital conversion module is provided, which is used to convert the analog signal filtered by the filtering module into a digital signal. as well as, The module replacement interface includes any combination of one or more of the following interfaces: A sensor replacement interface is provided for connecting one or more bioelectric signal sensor modules from at least one bioelectric signal sensor module. The sensor replacement interface is configured to replace the bioelectric signal sensor module it connects to. A signal isolation replacement interface is provided for connecting to one or more bioelectric signal isolation modules in at least one bioelectric signal isolation module. The signal isolation replacement interface is configured to replace the bioelectric signal isolation module it connects to. An amplification replacement interface is used to connect one or more amplification modules from at least one amplification module, and the amplification replacement interface is configured to replace the amplification module it connects to. A filter replacement interface is used to connect to one or more filter modules in at least one filter module, and the filter replacement interface is configured to replace the filter module it connects to. An analog-to-digital converter (ADC) replacement interface is used to connect to one or more ADC modules from at least one ADC module. The ADC replacement interface is configured to replace the ADC module it connects to.

[0007] According to the multimodal bioelectric detection training equipment in the first aspect, by changing the modules connected to the interface, the same training equipment can be adapted to different detection targets, thereby enabling the training equipment to perform multimodal bioelectric physiological detection.

[0008] The multimodal bioelectric detection training equipment proposed in the first aspect can be used for practical training in undergraduate and vocational schools for professional positions involving biosignal acquisition, analysis and / or processing (such as related positions in medical health, psychology, neuroscience, human factors engineering, human-computer interaction, user experience, educational technology and other related majors).

[0009] According to the first aspect of the multimodal bioelectric detection training equipment, a single training device can meet the bioelectric physiological detection training needs of multiple detection targets, thereby reducing the equipment cost of bioelectric physiological detection training.

[0010] In one implementation of the first aspect, the multimodal bioelectric detection training equipment also includes a data processing device, which is used to process the digital signal output by the analog-to-digital conversion module to obtain the detection result.

[0011] In one implementation of the first aspect, after the module replacement interface of the multimodal bioelectric detection training equipment is connected to the corresponding module, the output of the bioelectric signal sensor module is connected to the input of the bioelectric signal isolation module, the output of the bioelectric signal isolation module is connected to the input of the amplification module, the output of the amplification module is connected to the input of the filtering module, the output of the filtering module is connected to the input of the analog-to-digital conversion module, and the output of the analog-to-digital conversion module is connected to the input of the data processing device.

[0012] In one implementation of the first aspect, the device further includes any one or more of the following modules: a communication management module, a data transmission module, a storage module, and a data interface module, wherein: The communication management module is used to manage communication between different modules in the device; The data transmission module is used to output detection data and / or detection results; The storage module is used to save detection data and / or detection results; The data interface module provides a standard interface for the control module in the device. The standard interface supports secondary development for various programming scenarios.

[0013] The device based on the above implementation method can be configured with a communication management module to adapt to module components with different interface definitions. This not only increases the number of module types that the same training device can support, but also provides convenience for subsequent expansion of the training device to cope with more detection targets.

[0014] Based on the above implementation method, by configuring the communication management module, students can be trained to become familiar with the data formats of module input and output and the communication modes between modules through the setting process of the module interface definition, thereby improving the adaptability and teaching effect of the multimodal bioelectric detection training equipment.

[0015] The device based on the above implementation method supports outputting test data and / or test results to other devices through the data transmission module. This allows the test data and / or test results to be viewed on other devices. Not only can the test data and / or test results be inspected and evaluated on other devices, but further teaching and training can also be conducted based on the functions of other devices and the test data and / or test results.

[0016] The device based on the above implementation method supports outputting detection data and / or detection results to other devices through the data transmission module, thereby saving the detection data and / or detection results to other electronic devices for reference when evaluating the students' training process and training results.

[0017] The device based on the above implementation method supports the storage of test data and / or test results through the storage module, thereby supporting subsequent inspection and evaluation of the test data and / or test results, further teaching and training in combination with the test data and / or test results, and can support subsequent evaluation of students' training process and training effect by referring to the test data and / or test results.

[0018] The device based on the above implementation method supports secondary development or custom expansion based on the data interface module, which facilitates scientific research and innovative applications.

[0019] In one implementation of the first aspect, the device further includes a power module, wherein the power module includes an input side for connecting to a human body and an output side for connecting to subsequent circuits, and the input side and the output side use mutually isolated independent power supplies.

[0020] In one implementation of the first aspect, the power module supports both USB Type-C power supply and rechargeable lithium battery power supply, which can be switched customarily.

[0021] The device based on the above implementation method supports USB power supply and battery power supply through a multi-mode power module, adapting to laboratory, field or mobile scenarios, thereby enabling bioelectrophysiological testing training in multiple scenarios and improving the scenario flexibility of bioelectrophysiological testing training.

[0022] In one implementation of the first aspect, one or more of the bioelectric signal sensor module, bioelectric signal isolation module, amplification module, filtering module, and analog-to-digital conversion module in the multimodal bioelectric detection training equipment are configured to have adjustable parameters.

[0023] The equipment based on the above implementation method can adapt to different training needs, improve the application flexibility of the training equipment, enable the same training equipment to cope with more training scenarios, and further reduce the equipment cost of bioelectrophysiological detection training.

[0024] Specifically, in one implementation of the first aspect, the amplification module and / or filtering module are programmable modules.

[0025] Based on the above implementation method, students can adjust the gain parameters according to their needs through the programmable amplification module, thereby improving the adaptability and teaching effectiveness of the multimodal bioelectric detection training equipment.

[0026] With the equipment implemented as described above, students can adjust the filtering parameters according to their needs through the programmable filtering module, thereby improving the adaptability of the training equipment and the teaching effect.

[0027] In one implementation of the first aspect, one or more modules selected from the bioelectric signal sensor module, bioelectric signal isolation module, amplification module, filtering module, and analog-to-digital conversion module include a test interface. The test interface includes a test input interface for receiving test signals and a test output interface for outputting test result signals, wherein: The input side of the bioelectric signal isolation module is connected to the bioelectric signal sensor module, the input side of the bioelectric signal isolation module is connected to the amplification module, the test input interface of the bioelectric signal isolation module is located on the input side of the bioelectric signal isolation module, and the test output interface of the bioelectric signal isolation module is located on the output side of the bioelectric signal isolation module. And / or, The input side of the amplification module is connected to the bioelectric signal isolation module, the output side of the amplification module is connected to the filtering module, the test input interface of the amplification module is located on the input side of the amplification module, and the test output interface of the amplification module is located on the output side of the amplification module. And / or, The input side of the filter module is connected to the amplification module, and the output side of the filter module is connected to the analog-to-digital conversion module. The test input interface of the filter module is located on the input side of the filter module, and the test output interface of the filter module is located on the output side of the filter module. And / or, The input side of the analog-to-digital converter (ADC) is connected to the filter module. The test input interface of the ADC is located on the input side of the ADC, and the test output interface of the ADC is located on the digital clock and / or data line port of the ADC.

[0028] Based on the above implementation method, the internal signal flow of the training equipment can be "visualized" by setting up the test interface, providing a clear path for teaching, debugging and troubleshooting in training scenarios.

[0029] According to the above implementation method, the internal signals of the training equipment can be directly observed, and training, maintenance and debugging in the training scenario do not require professional tools, which reduces the complexity of training.

[0030] The training equipment based on the above implementation method, through the design of the test interface, allows direct connection to an oscilloscope or logic analyzer to observe key signals, simplifying fault diagnosis and maintenance in training scenarios.

[0031] Secondly, embodiments of this application provide a training method, which is applied to the physiological signal detection training equipment of the first aspect, and the method includes: The test signal is input to the module under test, which is any one or more of the bioelectric signal isolation module, amplification module, filtering module, and analog-to-digital conversion module of the physiological signal detection training equipment. Obtain the test results based on the output of the module under test.

[0032] In one implementation of the second aspect, the method includes: The output of the function signal generator is connected in series with a resistor and then connected to the input of the bioelectric signal isolation module. The resistor is used to simulate the contact impedance between the electrode and the skin. Connect the first channel probe of the dual-channel oscilloscope to the input terminal of the bioelectric signal isolation module, and connect the second channel probe to the output terminal of the bioelectric signal isolation module; Obtain test results, including: The test signal is output using a function signal generator. The test signal is a sine wave. The first and second channels of the dual-channel oscilloscope represent sine waves of the same frequency and phase. The amplitude ratio of the sine waves represented by the first and second channels of the dual-channel oscilloscope is 1:1 or a fixed unity gain. The waveform of the sine wave represented by the second channel of the dual-channel oscilloscope is undistorted. And / or, A common-mode signal is superimposed between the input terminal of the bioelectric signal isolation module and ground. The second channel of the dual-channel oscilloscope indicates that the common-mode signal is suppressed. And / or, The resistance between the input and output terminals of the bioelectric signal isolation module was measured under power-off conditions, and the resistance value was found to be infinite.

[0033] In one implementation of the second aspect, the method includes: Connect the output of the function signal generator to the input of the amplifier module; Connect the first channel probe of the dual-channel oscilloscope to the input terminal of the amplification module, and connect the second channel probe to the output terminal of the amplification module; Set the gain of the amplification module to the first gain and obtain the test results, including: A function signal generator is used to output a test signal, which is used to simulate a bioelectric signal. The first and second channels of the dual-channel oscilloscope represent signals with the same frequency and phase. The waveform of the signal represented by the second channel of the dual-channel oscilloscope is undistorted. The amplitude ratio of the signal represented by the second channel of the dual-channel oscilloscope to the signal represented by the first channel of the dual-channel oscilloscope is the first gain. And / or, A common-mode signal is superimposed between the input of the amplifier module and ground; the second channel of the dual-channel oscilloscope indicates that the common-mode signal is suppressed. And / or, The second channel of a dual-channel oscilloscope displays a clean waveform with no clipping distortion.

[0034] In one implementation of the second aspect, the method includes: Connect the output of the function signal generator to the input of the filter module; Connect the first channel probe of the dual-channel oscilloscope to the input terminal of the filter module, and connect the second channel probe to the output terminal of the filter module; Set the high-pass cutoff frequency and low-pass cutoff frequency of the filter module, and use a function signal generator to output a test signal. The test signal is a composite signal, which includes a low-frequency noise signal for simulating baseline drift, an analog signal for simulating bioelectrical signals, and a high-frequency noise signal for simulating bioelectrical noise. Obtain test results, including: In the signal represented by the second channel of a dual-channel oscilloscope, the high-frequency noise signal component is attenuated, and the signal waveform represented by the second channel of the dual-channel oscilloscope is smooth. In the signal represented by the second channel of a dual-channel oscilloscope, the low-frequency noise signal component is suppressed, and the baseline of the signal represented by the second channel of the dual-channel oscilloscope is stable. The signal represented by the second channel of a dual-channel oscilloscope has the highest proportion of analog signals used to simulate bioelectrical signals, and the waveform of the signal represented by the second channel of the dual-channel oscilloscope is clear.

[0035] In one implementation of the second aspect, the method includes: Connect a DC voltage source to the input terminal of the analog-to-digital converter module. The DC voltage source outputs a first voltage. Read the second voltage output by the analog-to-digital converter module. The error between the second voltage and the first voltage is within the error range specified by the analog-to-digital converter module. And / or, Connect the output of the function signal generator to the input of the analog-to-digital converter module, and connect the logic analyzer to the output of the analog-to-digital converter module. The function signal generator outputs an analog signal, and the logic analyzer captures the clock waveform and data waveform. The content of the data waveform corresponds to the voltage of the analog signal. And / or, Connect the output of the function generator to the input of the analog-to-digital converter (ADC), and connect the digital channel of the oscilloscope to the output of the ADC. The function generator outputs a sine wave, and the oscilloscope's digital channel displays a smooth, continuous sine wave without step-like quantization distortion or missing points.

[0036] Thirdly, embodiments of this application provide an electronic device, which includes a processor and a memory; The processor is used to execute instructions stored in memory so that the electronic device performs the method as described in the second aspect.

[0037] Fourthly, one embodiment of this application provides a computer program product containing instructions that, when executed by a computing device system, cause a cluster of computing devices to perform the method as described in the second aspect.

[0038] Fifthly, one embodiment of this application provides a computer-readable storage medium including computer program instructions, which, when executed by a computer system, cause the computer system to perform the method as described in the second aspect. Attached Figure Description

[0039] Figure 1 The diagram shown is a schematic diagram of a bioelectrophysiological detection device according to an embodiment of this application; Figure 2The diagram shown is a structural schematic of a multimodal bioelectric detection training device according to an embodiment of this application. Figure 3 The diagram shown is a partial structural schematic of a multimodal bioelectric detection training device according to an embodiment of this application. Figure 4 The diagram shown is a partial structural schematic of a multimodal bioelectric detection training device according to an embodiment of this application. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0041] The terminology used in the implementation section of this application is for the purpose of explaining specific embodiments of this application only, and is not intended to limit this application.

[0042] Bioelectrophysiological testing includes the acquisition and analysis of signals from electrocardiograms (ECG), electromyography (EMG), electroencephalograms (EEG), and electrooculograms (EOG). Because different bioelectrophysiological tests target different subjects with varying characteristic parameters, specialized equipment is required for each testing objective. Specifically, for different testing objectives, the corresponding specialized equipment uses a fixed hardware design, with the signal acquisition link consisting of dedicated amplifiers, filters, and analog-to-digital converters.

[0043] In the context of bioelectrophysiological testing, although bioelectrophysiological testing includes a variety of different detection targets (e.g., ECG, EMG, EEG, and EOG), the basic logic of bioelectrophysiological testing for different detection targets is consistent.

[0044] For example, Figure 1 The diagram shown is a schematic diagram of a bioelectrophysiological detection device according to an embodiment of this application.

[0045] like Figure 1 As shown, the bioelectric physiological detection device 100 includes a bioelectric signal sensor module 101, a bioelectric signal isolation module 102, an amplification module 103, a filtering module 104, an analog-to-digital conversion module 105, a data processing device 106, and a display module 107.

[0046] Specifically, the bioelectric signal sensor module 101 is used to acquire bioelectric signals from the human body.

[0047] For example, the bioelectric signal sensor module 101 includes human body electrodes.

[0048] For example, bioelectric signals include electroencephalogram (EEG) signals, electrocardiogram (ECG) signals, electromyographic (EMG) signals, and electrooculogram (EOG) signals.

[0049] The bioelectric signal isolation module 102 is used to isolate the bioelectric signal sensor module 101 to prevent external signals from interfering with the bioelectric signal sensor module 101, thereby improving the accuracy and precision of the bioelectric signals acquired by the bioelectric signal sensor module 101.

[0050] The amplification module 103 is used to amplify the bioelectric signals acquired by the bioelectric signal sensor module 101.

[0051] The filtering module 104 is used to filter the amplification result of the amplification module 103.

[0052] The analog-to-digital converter module 105 is used to convert the analog signal filtered by the filter module 104 into a digital signal (detection data).

[0053] The data processing device 106 is used to process digital signals and obtain processing results (detection results). The display module 107 is used to display the detection results.

[0054] For example, the processing results (detection results) can be a real-time display of the status of bioelectrical signals (e.g., electroencephalogram, electrocardiogram, electromyography, electrooculogram), or they can include bioelectrical analysis results obtained after analyzing digital signals (e.g., electroencephalogram analysis results, electromyography signal analysis results, electrooculogram analysis results).

[0055] In the bioelectrophysiological detection device 100, the specific implementation of the bioelectric signal sensor module 101 varies depending on the detection target. For example, different types of human electrical electrodes are used for different human detection locations.

[0056] Furthermore, the characteristics of the bioelectric signals acquired by the bioelectric signal sensor module 101 differ depending on the detection target. Therefore, one or more of the bioelectric signal isolation module 102, amplification module 103, filtering module 104, and analog-to-digital conversion module 105 are implemented differently for bioelectric signals with different characteristics. For example, different amplification modules (amplifier circuits with different structural designs) and filtering modules (filter circuits with different filtering structures) are used for bioelectric signals with different characteristics.

[0057] This means that, based on the bioelectrophysiological detection device 100, corresponding module implementation methods need to be designed for different detection targets, so that a dedicated device corresponding to each detection target can be obtained in the end.

[0058] Specialized equipment is designed for different detection targets. Each type of equipment (such as electrocardiogram and electromyography) is an independent system, which requires users to purchase multiple sets of equipment, resulting in high costs and large space requirements.

[0059] For different detection targets, certain types of modules can use modules with the same hardware parameters. For example, for different detection targets, the same data processing device 106 (with corresponding software loaded in the processing device only according to the detection target) and display module 107 can be used. As another example, the same amplification module 103 can be used for different detection targets. The operating parameters of the amplification module 103 are adjustable, and its adjustable range of operating parameters covers the characteristics of different detection targets.

[0060] Therefore, by replacing some modules, a single device can perform multimodal bioelectrophysiological detection for different bioelectrophysiological detection targets, without the need to design dedicated devices for different detection targets, thus reducing equipment costs.

[0061] Based on the above analysis, one embodiment of this application proposes a multimodal bioelectric detection training device.

[0062] The multimodal bioelectric detection training device proposed in this application includes at least one bioelectric signal sensor module, at least one bioelectric signal isolation module, at least one amplification module, at least one filtering module, at least one analog-to-digital conversion module, and a module replacement interface. The module replacement interface includes any combination of one or more of the following interfaces: A sensor replacement interface is provided for connecting one or more bioelectric signal sensor modules from at least one bioelectric signal sensor module. The sensor replacement interface is configured to replace the bioelectric signal sensor module it connects to. A signal isolation replacement interface is provided for connecting to one or more bioelectric signal isolation modules in at least one bioelectric signal isolation module. The signal isolation replacement interface is configured to replace the bioelectric signal isolation module it connects to. An amplification replacement interface is used to connect one or more amplification modules from at least one amplification module, and the amplification replacement interface is configured to replace the amplification module it connects to. A filter replacement interface is used to connect to one or more filter modules in at least one filter module, and the filter replacement interface is configured to replace the filter module it connects to. An analog-to-digital converter (ADC) replacement interface is used to connect to one or more ADC modules from at least one ADC module. The ADC replacement interface is configured to replace the ADC module it connects to.

[0063] Specifically, in one embodiment, after the module replacement interface of the multimodal bioelectric detection training equipment is connected to the corresponding module, the output of the bioelectric signal sensor module is connected to the input of the bioelectric signal isolation module, the output of the bioelectric signal isolation module is connected to the input of the amplification module, the output of the amplification module is connected to the input of the filtering module, the output of the filtering module is connected to the input of the analog-to-digital conversion module, and the output of the analog-to-digital conversion module is connected to the input of the data processing device.

[0064] For example, Figure 2 The diagram shown is a structural schematic of a multimodal bioelectric detection training device according to an embodiment of this application.

[0065] like Figure 2 As shown, the multimodal bioelectric detection training equipment 200 includes a bioelectric signal sensor module 201, a bioelectric signal isolation module 202, an amplification module 203, a filtering module 204, an analog-to-digital conversion module 205, a module replacement interface 210, a data processing device 206, and a display module 207.

[0066] The functions of the bioelectric signal sensor module 201, bioelectric signal isolation module 202, amplification module 203, filtering module 204, analog-to-digital conversion module 205, data processing device 206, and display module 207 can be referred to the functions of the bioelectric signal sensor module 101, bioelectric signal isolation module 102, amplification module 103, filtering module 104, analog-to-digital conversion module 105, data processing device 106, and display module 107, respectively.

[0067] The module replacement interface 210 includes a sensor replacement interface 211, a signal isolation replacement interface 212, an amplification replacement interface 213, a filtering replacement interface 214, and an analog-to-digital conversion replacement interface 215.

[0068] The bioelectric signal sensor module 201 includes at least one bioelectric signal sensor module, and the sensor replacement interface 211 is used to connect one or more bioelectric signal sensor modules in the bioelectric signal sensor module 201. Users can adapt the bioelectric signal sensor module portion of the multimodal bioelectric detection training equipment 200 to different detection targets by changing the bioelectric signal sensor module connected to the sensor replacement interface 211.

[0069] The bioelectric signal isolation module 202 includes at least one bioelectric signal isolation module, and the signal isolation replacement interface 212 is used to connect one or more bioelectric signal isolation modules in the bioelectric signal isolation module 202. Users can adapt the bioelectric signal isolation module portion of the multimodal bioelectric detection training equipment 200 to different detection targets by replacing the bioelectric signal isolation module connected to the signal isolation replacement interface 212.

[0070] Amplification module 203 includes at least one amplification module, and amplification replacement interface 213 is used to connect one or more amplification modules in amplification module 203. Users can adapt the amplification module portion of the multimodal bioelectrical detection training equipment 200 to different detection targets by replacing the amplification module connected to the amplification replacement interface 213. For example, electrocardiograms require a high-gain amplification module.

[0071] The filtering module 204 includes at least one filtering module, and the filter replacement interface 214 is used to connect one or more filtering modules in the filtering module 204. Users can adapt the filtering module portion of the multimodal bioelectrical detection training equipment 200 to different detection targets by replacing the filtering module connected to the filter replacement interface 214. For example, an ECG requires a low-pass filter module.

[0072] The analog-to-digital conversion module 205 includes at least one analog-to-digital conversion module, and the analog-to-digital conversion replacement interface 215 is used to connect one or more analog-to-digital conversion modules in the analog-to-digital conversion module 205. Users can adapt the analog-to-digital conversion module portion of the multimodal bioelectric detection training equipment 200 to different detection targets by replacing the analog-to-digital conversion module connected to the analog-to-digital conversion replacement interface 215.

[0073] When the bioelectric signal sensor module, bioelectric signal isolation module, amplification module, filtering module, and analog-to-digital conversion module are respectively connected to sensor replacement interface 211, signal isolation replacement interface 212, amplification replacement interface 213, filtering replacement interface 214, and analog-to-digital conversion replacement interface 215, the output of the bioelectric signal sensor module is connected to the input of the bioelectric signal isolation module, the output of the bioelectric signal isolation module is connected to the input of the amplification module, the output of the amplification module is connected to the input of the filtering module, the output of the filtering module is connected to the input of the analog-to-digital conversion module, and the output of the analog-to-digital conversion module is connected to the input of the data processing device 206.

[0074] According to the embodiments of this application, the multimodal bioelectric detection training device can be adapted to different detection targets by changing the modules connected to the interface of the module, thereby enabling the training device to perform multimodal bioelectric physiological detection.

[0075] The multimodal bioelectric detection training equipment proposed in this application can be used for practical training in professional positions involving biosignal acquisition, analysis and / or processing, such as medical and health, psychology, neuroscience, human factors engineering, human-computer interaction, user experience, and educational technology, in universities, vocational schools, and training institutions.

[0076] The multimodal bioelectric detection training device according to the embodiments of this application can meet the bioelectric physiological detection training needs of multiple detection targets with a single device, thereby reducing the equipment cost of bioelectric physiological detection training.

[0077] Specifically, this application does not impose specific restrictions on the implementation of the module replacement interface (e.g., module replacement interface 210) in the multimodal bioelectric detection training equipment. Those skilled in the art can design the module replacement interface according to actual needs.

[0078] For example, in one embodiment, the module replacement interface uses a unified physical interface (such as pin headers or sockets) for different types of modules, supporting plug-and-play functionality. Users can connect a module to the module replacement interface by inserting its interface into it, and disconnect the module from it by unplugging its interface.

[0079] For example, in one embodiment, the module replacement interface includes a switch and interfaces that connect to all modules of the same type. The user can control which module the module replacement interface connects to using the switch.

[0080] Furthermore, in the practical training scenario of bioelectrophysiological detection, it is necessary to adjust the implementation parameters of some processes in the bioelectrophysiological detection procedure. For example, trainees need to adjust the signal processing chain.

[0081] In response to the above situation, in one embodiment, one or more of the bioelectric signal sensor module, bioelectric signal isolation module, amplification module, filtering module, and analog-to-digital conversion module in the multimodal bioelectric detection training equipment are configured to have adjustable parameters.

[0082] The multimodal bioelectric detection training equipment according to the embodiments of this application can adapt the training equipment to different training needs, thereby improving the application flexibility of the training equipment, enabling the same training equipment to cope with more training scenarios, and further reducing the equipment cost of bioelectric physiological detection training.

[0083] Specifically, this application does not impose specific restrictions on the implementation of the bioelectric signal sensor module (e.g., bioelectric signal sensor module 201) in the multimodal bioelectric detection training equipment. Those skilled in the art can design the bioelectric signal sensor module according to actual needs.

[0084] For example, in one embodiment, the multimodal bioelectric detection training equipment includes four sets of bioelectric signal sensor modules for ECG, EMG, EEG, and EOG, respectively. The module replacement interface includes a sensor replacement interface, the four sets of bioelectric signal sensor modules for ECG, EMG, EEG, and EOG, and a unified physical interface (such as pin headers or sockets) for the sensor replacement interface. Students can adapt the bioelectric signal sensor module portion of the multimodal bioelectric detection training equipment to one of ECG, EMG, EEG, and EOG by inserting the interface of one of the four sets of bioelectric signal sensor modules into the sensor replacement interface.

[0085] Specifically, this application does not impose specific restrictions on the implementation of the bioelectric signal isolation module (e.g., bioelectric signal isolation module 202) in the multimodal bioelectric detection training equipment. Those skilled in the art can design the bioelectric signal isolation module according to actual needs.

[0086] For example, in one embodiment, the bioelectric signal isolation module employs analog isolation technology, such as an isolation amplifier or a linear optocoupler.

[0087] Specifically, this application does not impose specific restrictions on the implementation of the amplification module (e.g., amplification module 203) in the multimodal bioelectric detection training equipment. Those skilled in the art can design the amplification module according to actual needs.

[0088] For example, in one embodiment, the amplification module is a programmable module, so that the same amplification module can be programmed to change settings to match more detection targets without replacing the amplification module.

[0089] According to the embodiments of this application, the multimodal bioelectric detection training equipment allows students to adjust the gain parameters as needed through a programmable amplification module, thereby improving the adaptability and teaching effectiveness of the multimodal bioelectric detection training equipment.

[0090] Specifically, in one embodiment, the amplification module uses an instrumentation amplifier with a gain range adjustable from 1 to 1000 times. It can be set via a digital potentiometer or software to adapt to different signal amplitudes (such as approximately 0.5-5 mV for electrocardiogram signals and approximately 5-100 μV for electroencephalogram signals).

[0091] Specifically, this application does not impose specific restrictions on the implementation of the filtering module (e.g., filtering module 204) in the multimodal bioelectric detection training equipment. Those skilled in the art can design the filtering module according to actual needs.

[0092] For example, in one embodiment, the filtering module is a programmable module, so that the same filtering module can be programmed to change settings to match more detection targets without replacing the filtering module.

[0093] According to the embodiments of this application, the multimodal bioelectric detection training equipment allows students to adjust the filtering parameters as needed through a programmable filtering module, thereby improving the adaptability of the training equipment and the teaching effect.

[0094] Specifically, in one embodiment, the filtering module is based on a programmable filter chip and provides low-pass, high-pass, and band-pass filtering with adjustable cutoff frequencies (e.g., ECG filtering range 0.05-150 Hz, EMG filtering range 10-500 Hz).

[0095] Specifically, this application does not impose specific restrictions on the implementation of the analog-to-digital conversion module (e.g., analog-to-digital conversion module 205) in the multimodal bioelectric detection training equipment. Those skilled in the art can design the analog-to-digital conversion module according to actual needs.

[0096] For example, in one embodiment, the analog-to-digital conversion module employs a high-precision analog-to-digital conversion module. Specifically, in one embodiment, the analog-to-digital conversion module uses a 24-bit ADC with a sampling rate of up to 10 kSPS to convert analog bioelectric signals into digital signals, ensuring high-precision acquisition.

[0097] The multimodal bioelectric detection training equipment according to the embodiments of this application, through a high-precision analog-to-digital conversion module, enables the same analog-to-digital conversion module to support conversion accuracy that covers the conversion accuracy required for different detection targets without replacing the module, thereby improving the adaptability and teaching effectiveness of the multimodal bioelectric detection training equipment.

[0098] Furthermore, in bioelectrophysiological testing training scenarios, different types of modules within the training equipment need to communicate during the training process. For example, the amplification module needs to transmit the amplified signal to the filtering module. This requires defining interfaces for different types of modules and designing communication connections and methods between these modules based on the interface definitions.

[0099] However, different modules of the same type may have different interface definitions, which means that after changing the access module, the communication methods between the previous modules are not applicable to the communication between the modules after the module is changed.

[0100] In view of the above situation, in one embodiment of this application, the multimodal bioelectric detection training device further includes a communication management module (see...). Figure 2 The communication management module 208 shown is used to manage communication between different modules in the training equipment.

[0101] In one embodiment, the pin definitions of the sensor replacement interface 211, signal isolation replacement interface 212, amplification replacement interface 213, filtering replacement interface 214, and analog-to-digital conversion replacement interface 215 can be customized by configuring the communication management module 208.

[0102] The multimodal bioelectric detection training device according to the embodiments of this application, by configuring a communication management module, enables the training device to adapt to module components with different interface definitions. This not only increases the types of modules that the same training device can support, but also provides convenience for subsequent expansion of the training device to cope with more detection targets.

[0103] According to the embodiments of this application, the multimodal bioelectric detection training equipment, by configuring a communication management module, can train students to become familiar with the data formats of module input and output and the communication modes between modules through the setting process of the module interface definition, thereby improving the adaptability and teaching effect of the multimodal bioelectric detection training equipment.

[0104] Furthermore, in one embodiment, the multimodal bioelectric detection training device also includes a power supply module (see reference). Figure 2 The power module 209 shown.

[0105] Specifically, in one embodiment, the power module includes an input side for connecting to the human body and an output side for connecting to subsequent circuits, with the input side and output side of the power module using mutually isolated independent power supplies.

[0106] Specifically, this application does not impose specific restrictions on the implementation of the power module (e.g., power module 209) in the multimodal bioelectric detection training equipment. Those skilled in the art can design the power module according to actual needs.

[0107] For example, in one embodiment, the power module supports both USB Type-C power supply and rechargeable lithium battery power supply, which can be switched in a customizable manner.

[0108] The multimodal bioelectric detection training device according to the embodiments of this application supports USB power supply and battery power supply through a multi-mode power module, adapting to laboratory, field or mobile scenarios, thereby enabling bioelectric physiological detection training in multiple scenarios and improving the scenario flexibility of bioelectric physiological detection training.

[0109] Furthermore, in one embodiment, the multimodal bioelectric detection training device also includes a data transmission module (see reference). Figure 2 The data transmission module 220 shown is used to output detection data and / or detection results.

[0110] Specifically, this application does not impose specific restrictions on the implementation of the data transmission module (e.g., data transmission module 220) in the multimodal bioelectric detection training equipment. Those skilled in the art can design the data transmission module according to actual needs.

[0111] For example, in one embodiment, the data transmission module supports wired (e.g., USB Type-C), Bluetooth, and WiFi data transmission.

[0112] The multimodal bioelectric detection training device according to the embodiments of this application supports the output of detection data and / or detection results to other devices through a data transmission module. This allows the detection data and / or detection results to be viewed on other devices. Not only can the detection data and / or detection results be tested and evaluated on other devices, but further teaching and training can also be conducted based on the functions of other devices and the detection data and / or detection results.

[0113] According to the embodiments of this application, the multimodal bioelectric detection training equipment supports the output of detection data and / or detection results to other devices through a data transmission module, thereby saving the detection data and / or detection results to other electronic devices for reference when evaluating the students' training process and training effect.

[0114] Furthermore, in one embodiment, the multimodal bioelectric detection training device also includes a storage module (see reference). Figure 2 The storage module 221 shown is used to store detection data and / or detection results.

[0115] Specifically, this application does not impose specific restrictions on the implementation of the storage module (e.g., storage module 221) in the multimodal bioelectric detection training equipment. Those skilled in the art can design the storage module according to actual needs.

[0116] For example, in one embodiment, the storage module includes a built-in storage chip; in another embodiment, the storage module includes an external memory interface.

[0117] The multimodal bioelectric detection training device according to the embodiments of this application supports the storage of detection data and / or detection results through a storage module, thereby supporting subsequent verification and evaluation of the detection data and / or detection results, further teaching and training in combination with the detection data and / or detection results, and can support subsequent evaluation of students' training process and training effect by referring to the detection data and / or detection results.

[0118] Furthermore, in one embodiment, the multimodal bioelectric detection training device also includes a data interface module (see reference). Figure 2The data interface module 222 shown is used to provide a standard interface for the control module in the training equipment. This standard interface supports secondary development for various programming scenarios.

[0119] Specifically, this application does not impose specific restrictions on the implementation of the data interface module (e.g., data interface module 222) in the multimodal bioelectric detection training equipment. Those skilled in the art can design the data interface module according to actual needs.

[0120] For example, in one embodiment, the data interface module provides an API standard interface that supports secondary development using Python, MATLAB, and other languages.

[0121] The multimodal bioelectric detection training device according to the embodiments of this application supports secondary development or custom expansion based on the data interface module, which is convenient for scientific research and innovative applications.

[0122] Furthermore, in one embodiment, the multimodal bioelectric detection training equipment also includes a main control module, which is used for system control and data coordination.

[0123] In one embodiment, the main control module is also used to set parameters for other modules. For example, the user starts the main control module and sets the parameters of the amplification module and the filtering module (such as gain of 1-500 times and filtering of 0.05-40 Hz ECG mode) through software.

[0124] In one embodiment, the communication management module and / or data processing device of the multimodal bioelectric detection training equipment are integrated into the main control module.

[0125] Specifically, this application does not impose specific restrictions on the implementation of the main control module in the multimodal bioelectric detection training equipment. Those skilled in the art can design the main control module according to actual needs.

[0126] For example, in one embodiment, the main control module is a programmable module, which is implemented based on a microcontroller.

[0127] Figure 3 The diagram shown is a partial structural schematic of a multimodal bioelectric detection training device according to an embodiment of this application.

[0128] like Figure 3 As shown, the multimodal bioelectric detection training equipment includes a module replacement interface 310, which includes a sensor replacement interface 311, a signal isolation replacement interface 312, an amplification replacement interface 313, a filtering replacement interface 314, an analog-to-digital conversion replacement interface 315, a display module 307, a main control module 308, a power supply module 309, a data transmission module 320, a storage module 321, and a data interface module 322.

[0129] The sensor replacement interface 311, signal isolation replacement interface 312, amplification replacement interface 313, filtering replacement interface 314, and analog-to-digital conversion replacement interface 315 can be referenced from the sensor replacement interface 211, signal isolation replacement interface 212, amplification replacement interface 213, filtering replacement interface 214, and analog-to-digital conversion replacement interface 215, respectively. The sensor replacement interface 311, signal isolation replacement interface 312, amplification replacement interface 313, filtering replacement interface 314, and analog-to-digital conversion replacement interface 315 use a unified physical interface (such as pin headers or sockets) and support plug-and-play functionality.

[0130] The multimodal bioelectric detection training equipment also includes a main control module 308. The main control module 308 is based on a microcontroller.

[0131] The main control module 308 is used for system control and data coordination. The main control module 308 integrates a data processing device. The data processing device integrated into the main control module 308 can be referenced from data processing device 206.

[0132] When the bioelectric signal sensor module, bioelectric signal isolation module, amplification module, filtering module, and analog-to-digital conversion module are respectively connected to sensor replacement interface 311, signal isolation replacement interface 312, amplification replacement interface 313, filtering replacement interface 314, and analog-to-digital conversion replacement interface 315, the output of the bioelectric signal sensor module is connected to the input of the bioelectric signal isolation module, the output of the bioelectric signal isolation module is connected to the input of the amplification module, the output of the amplification module is connected to the input of the filtering module, the output of the filtering module is connected to the input of the analog-to-digital conversion module, and the output of the analog-to-digital conversion module is connected to the input of the main control module 308.

[0133] Display module 307 can refer to display module 207. The main control module 308 processes the digital signal output by the analog-to-digital converter module connected to the analog-to-digital converter replacement interface 315 to obtain the detection result, and outputs the detection result to display module 307 for display.

[0134] The main control module 308 also integrates a communication management module. The communication management module integrated in the main control module 308 can be referenced from the communication management module 208. Users can configure the pin definitions of the sensor replacement interface 311, signal isolation replacement interface 312, amplification replacement interface 313, filtering replacement interface 314, and analog-to-digital conversion replacement interface 315 through the main control module 308 via software settings.

[0135] Users can configure the operating parameters of the module connected to the module replacement interface 310 via the main control module 308 through software settings.

[0136] The power module 309, data transmission module 320, storage module 321 and data interface module 322 can be referred to as power module 209, data transmission module 220, storage module 221 and data interface module 222 respectively.

[0137] The power supply module 309 supplies power to components such as the main control module 308 and the module replacement interface 310. The storage module 321 stores the detection results obtained by the main control module 308. The data transmission module 320 outputs the detection results obtained by the main control module 308. The data interface module 322 provides a standard interface for the main control module 308 to the outside world, allowing for setting the parameters of the main control module 308, debugging its functions, and secondary development.

[0138] Furthermore, during the practical training for bioelectrophysiological detection, the extended application scenarios include training scenarios, debugging scenarios, and fault detection scenarios. In these scenarios, it is necessary to test the modules in the training equipment used for bioelectrophysiological detection individually.

[0139] In view of the above situation, in one embodiment of this application, a test interface is reserved in each key functional module of the multimodal bioelectric detection training equipment to facilitate the access of test tools.

[0140] Specifically, this application does not impose specific limitations on the testing tools. For example, the testing tools may be digital storage oscilloscopes, multimeters, logic analyzers, and signal transmitters.

[0141] Specifically, in one embodiment, one or more modules of the multimodal bioelectric detection training equipment, including the bioelectric signal sensor module, bioelectric signal isolation module, amplification module, filtering module, and analog-to-digital conversion module, include a test interface. The test interface includes a test input interface and a test output interface. The test input interface is used to receive test signals, and the test output interface is used to output test result signals. Specifically, this application does not impose specific restrictions on the implementation of the test interface in the multimodal bioelectric detection training equipment. Those skilled in the art can design the test interface according to actual needs.

[0142] For example, in one embodiment, the test interface is a standardized test point reserved on the printed circuit board of the functional module. These test points are in the form of exposed pads or test pin sockets, which facilitates direct connection of probes from oscilloscopes, multimeters, logic analyzers, and signal transmitters.

[0143] For example, the connection method for the test tool to the test point can be to use the oscilloscope probe grounding clip to connect to the common ground of the module, with the probe tip contacting the target test point.

[0144] According to the embodiments of this application, the multimodal bioelectric detection training equipment can "visualize" the internal signal flow of the training equipment based on the setting of the test interface, providing a clear path for teaching, debugging and troubleshooting in training scenarios.

[0145] According to the multimodal bioelectric detection training device of this application embodiment, the internal signals of the training device can be directly observed, and no professional tools are required for teaching, maintenance and debugging of the training device, which reduces the complexity of training.

[0146] The multimodal bioelectric detection training equipment according to the embodiments of this application, through the design of the test interface, allows direct connection to an oscilloscope or logic analyzer to observe key signals, simplifying fault diagnosis and maintenance.

[0147] Furthermore, one embodiment of this application also provides a training method for the multimodal bioelectric detection training equipment provided in this embodiment.

[0148] One embodiment of the training method of this application includes: The test signal is input to the module under test, which is any one or more of the bioelectric signal isolation module, amplification module, filtering module, and analog-to-digital conversion module of the physiological signal detection training equipment. Obtain the test results based on the output of the module under test.

[0149] Specifically, in one embodiment, one or more modules of the multimodal bioelectric detection training equipment, including the bioelectric signal sensor module, bioelectric signal isolation module, amplification module, filtering module, and analog-to-digital conversion module, include a test interface, wherein the test interface includes a test input interface and a test output interface; One embodiment of the training method of this application includes: Input the test signal to the test input interface of the module under test, and obtain the test result signal output by the test output interface of the module under test.

[0150] The following uses the bioelectric signal isolation module, amplification module, filtering module, and analog-to-digital conversion module as test objects to illustrate the implementation process of a training method according to an embodiment of this application.

[0151] Figure 4 The diagram shown is a partial structural schematic of a multimodal bioelectric detection training device according to an embodiment of this application.

[0152] like Figure 4As shown, in one embodiment, the multimodal bioelectric detection training equipment includes at least a bioelectric signal sensor module 401, a bioelectric signal isolation module 402, an amplification module 403, a filtering module 404, an analog-to-digital conversion module 405, a data processing device 406, a sensor replacement interface 411, a signal isolation replacement interface 412, an amplification replacement interface 413, a filtering replacement interface 414, and an analog-to-digital conversion replacement interface 415.

[0153] The bioelectric signal sensor module 401, bioelectric signal isolation module 402, amplification module 403, filtering module 404, and analog-to-digital conversion module 405 are respectively connected to sensor replacement interface 411, signal isolation replacement interface 412, amplification replacement interface 413, filtering replacement interface 414, and analog-to-digital conversion replacement interface 415, so that: the output of the bioelectric signal sensor module 401 is connected to the input of the bioelectric signal isolation module 402, the output of the bioelectric signal isolation module 402 is connected to the input of the amplification module 403, the output of the amplification module 403 is connected to the input of the filtering module 404, the output of the filtering module 404 is connected to the input of the analog-to-digital conversion module 405, and the output of the analog-to-digital conversion module 405 is connected to the input of the data processing device 406.

[0154] The test input interface 412 of the bioelectric signal isolation module 402 is located on the bioelectric signal isolation module input side of the bioelectric signal sensor module 401 connected to the bioelectric signal isolation module 402, and the test output interface 422 of the bioelectric signal isolation module 402 is located on the bioelectric signal isolation module output side of the bioelectric signal isolation module 402 connected to the amplification module 403.

[0155] In one embodiment, when testing the bioelectric signal isolation module 402, the test input interface 412 is connected to a test signal generation device. Specifically, in one embodiment, the process of the test signal generation device generating a test signal for the bioelectric signal isolation module 402 includes: The output of the function signal generator is connected in series with a resistor and then connected to the test input interface 412. This resistor is used to simulate the contact impedance between the electrode and the skin. Connect the first channel probe of the dual-channel oscilloscope to the test input interface 412 and the second channel probe to the test output interface 422; Obtaining the test results includes: The test signal is output using a function signal generator. The test signal is a sine wave. The first and second channels of the dual-channel oscilloscope represent sine waves of the same frequency and phase. The amplitude ratio of the sine waves represented by the first and second channels of the dual-channel oscilloscope is 1:1 or has a fixed unity gain. The waveform of the sine wave represented by the second channel of the dual-channel oscilloscope is undistorted. And / or, A common-mode signal is superimposed between the input terminal of the bioelectric signal isolation module 402 and ground. The second channel of the dual-channel oscilloscope indicates that the common-mode signal is suppressed. And / or, When the power is off, the resistance between the input and output terminals of the bioelectric signal isolation module 402 is measured, and the resistance value is infinite.

[0156] For example, a sine wave with a frequency of 10Hz and an amplitude of 1mVpp can be generated using a function signal generator, and then applied to the input of the isolation module after being connected in series with a high-value resistor. This high-value resistor is used to simulate the contact impedance after the electrode comes into contact with the skin.

[0157] In one embodiment, when testing the bioelectric signal isolation module 402, the test input interface 412 and the test output interface 422 are connected to a dual-channel oscilloscope. Specifically, the first channel probe of the dual-channel oscilloscope is connected to the test input interface 412, and the second channel probe is connected to the test output interface 422.

[0158] Furthermore, to ensure that the safety isolation is not compromised, the ground clamps of the two channel probes of the dual-channel oscilloscope must not be connected simultaneously. Only the ground clamp of the first channel should be used to connect to the reference ground of the test input interface 412, and the second channel should be used for differential or floating ground measurements (using an isolated channel oscilloscope or disconnecting the second channel ground clamp).

[0159] In one embodiment, when testing the bioelectric signal isolation module 402, the test includes: Signal path and gain: The dual-channel oscilloscope can observe sine waves of the same frequency and phase at test input interface 412 and test output interface 422. The amplitude ratio of the sine waves may be 1:1 or have a fixed unity gain (e.g., 1.0). The waveform is undistorted.

[0160] Isolation effectiveness (common-mode rejection) test: A large common-mode signal (e.g., 1Vpp, 50Hz) is superimposed between test input interface 412 and ground. A dual-channel oscilloscope observes that the 50Hz interference at test output interface 422 is greatly suppressed, and the output signal remains clean.

[0161] Safety isolation resistor test: With the power off, use a multimeter on the high resistance setting to measure the resistance between the test input interface 412 and the test output interface 422. The resistance should be infinite.

[0162] The input side of the amplification module 403 is connected to the preceding bioelectric signal isolation module 402, and the test input interface 413 of the amplification module 403 is located on the input side of the amplification module 403. Specifically, the amplification module 403 includes an amplification circuit for signal amplification, and the test input interface 413 of the amplification module 403 is an analog signal input, located after the input interface of the amplification module 403 and before the amplification circuit.

[0163] The output side of the amplification module 403 is connected to the subsequent filtering module 404. The test output interface 423 of the amplification module 403 is the output of the amplified signal, located on the output side of the amplification module 403, and connected to the output end of the amplification module 403 before the subsequent filtering module 404.

[0164] In one embodiment, when testing the amplification module 403, the test input interface 413 is connected to the test signal generation device. Specifically, in one embodiment, the process of the test signal generation device generating a test signal for the amplification module 403 includes: Connect the output of the function signal generator to the test input interface 413; Connect the first channel probe of the dual-channel oscilloscope to the test input interface 413 and the second channel probe to the test output interface 423; Set the gain of amplification module 403 to the first gain and obtain the test results, including: A function signal generator is used to output a test signal, which is used to simulate a bioelectric signal. The first and second channels of the dual-channel oscilloscope represent signals with the same frequency and phase. The waveforms of the signals represented by the first and second channels of the dual-channel oscilloscope are undistorted. The amplitude ratio of the signal represented by the second channel of the dual-channel oscilloscope to the signal represented by the first channel of the dual-channel oscilloscope is the first gain. And / or, A common-mode signal is superimposed between the input terminal of the amplifier module 403 and ground, and the second channel of the dual-channel oscilloscope indicates that the common-mode signal is suppressed; And / or, The second channel of a dual-channel oscilloscope displays a clean waveform with no clipping distortion.

[0165] For example, a function signal generator can be used to simulate bioelectrical signals and injected into the module's input. For instance, a sine wave with a frequency of 10 Hz and an amplitude of 1 mVpp can be generated to simulate a typical electrocardiogram R-wave signal.

[0166] When testing the amplifier module 403, connect the output of the function signal generator to the test input interface 413 and connect them to the common ground.

[0167] In one embodiment, when testing the amplification module 403, the test input interface 413 and the test output interface 423 are connected to a dual-channel oscilloscope. Specifically, the first channel probe of the dual-channel oscilloscope is connected to the test input interface 413, and the second channel probe is connected to the test output interface 423.

[0168] In one embodiment, when testing the amplification module 403, the gain of the amplification module 403 is set to 1-500 times, and the test includes: Signal path verification: The first channel of the dual-channel oscilloscope displays a clear 1mVpp / 10Hz sine wave. The second channel displays a 500mVpp / 10Hz sine wave. The output signal is in phase and frequency with the input signal, without distortion.

[0169] Gain accuracy test: The signal displayed on the second channel of the dual-channel oscilloscope is 1-500 times that displayed on the first channel, with an error within ±5%.

[0170] Common-mode rejection ratio test: A common-mode interference signal is superimposed between the test input interface 413 and ground. The interference signal observed on the second channel of the dual-channel oscilloscope is greatly suppressed.

[0171] Output saturation and distortion: The signal waveform observed on the second channel of the dual-channel oscilloscope is clean and free of clipping distortion.

[0172] The input side of the filter module 404 is connected to the pre-amplifier module 403, and the output side of the filter module 404 is connected to the subsequent analog-to-digital converter module 405. The test input interface of the filter module 404 is located on the input side of the filter module 404, and the test output interface of the filter module 404 is located on the output side of the filter module 404. Specifically, the test input interface 414 of the filter module 404 is the filter input, located on the filter module input side of the filter module 404 connected to the pre-amplifier module 403, and the test output interface 424 of the filter module 404 is the filter output, located on the filter module output side of the filter module 404 connected to the subsequent analog-to-digital converter module 405.

[0173] In one embodiment, when testing the filtering module 404, the test input interface 414 is connected to the test signal generation device. Specifically, in one embodiment, the process of the test signal generation device generating a test signal for the filtering module 404 includes: Connect the output of the function signal generator to the test input interface 414; Connect the first channel probe of the dual-channel oscilloscope to the test input interface 414 and the second channel probe to the test output interface 424. Set the high-pass cutoff frequency and low-pass cutoff frequency of the filter module 404, and use a function signal generator to output a test signal. The test signal is a composite signal, which includes a low-frequency noise signal for simulating baseline drift, an analog signal for simulating bioelectrical signals, and a high-frequency noise signal for simulating bioelectrical noise. Obtain test results, including: In the signal represented by the second channel of a dual-channel oscilloscope, the high-frequency noise signal component is attenuated, and the signal waveform represented by the second channel of the dual-channel oscilloscope is smooth. In the signal represented by the second channel of a dual-channel oscilloscope, the low-frequency noise signal component is suppressed, and the baseline of the signal represented by the second channel of the dual-channel oscilloscope is stable. The signal represented by the second channel of a dual-channel oscilloscope has the highest proportion of analog signals used to simulate bioelectrical signals, and the waveform of the signal represented by the second channel of the dual-channel oscilloscope is clear.

[0174] For example, a function signal generator can be used to generate a composite signal, such as a sine wave mixture containing 1Hz (simulating baseline drift), 10Hz (ECG signal), and 100Hz (simulating electromyographic noise).

[0175] When testing the filter module 404, the aforementioned composite signal is injected into the test input interface 414.

[0176] In one embodiment, when testing the filter module 404, the test input interface 414 and the test output interface 424 are connected to a dual-channel oscilloscope. Specifically, the first channel probe of the dual-channel oscilloscope is connected to the test input interface 414, and the second channel probe is connected to the test output interface 424.

[0177] In one embodiment, when testing the filter module 404, the filter module 404 is set to ECG mode: high-pass cutoff frequency 0.5Hz, low-pass cutoff frequency 40Hz, and the test includes: Low-pass filtering function: In the signal observed by the second channel of the dual-channel oscilloscope, the 100Hz high-frequency noise component is significantly attenuated, and the waveform becomes smoother. High-pass filtering function: In the signal observed by the second channel of the dual-channel oscilloscope, a 1Hz baseline drift is effectively suppressed, and the signal baseline is stabilized.

[0178] Bandpass frequency response: The main component of the signal observed on the second channel of the dual-channel oscilloscope is 10Hz, with clear waveform and high signal-to-noise ratio.

[0179] The input side of the analog-to-digital converter module 405 is connected to the preceding filter module 404. The test input interface of the analog-to-digital converter module 405 is located on the input side of the analog-to-digital converter module 405. That is, the test input interface 415 of the analog-to-digital converter module 405 is an analog input and is located on the input side of the analog-to-digital converter module 405 connected to the preceding filter module 404. The test output interface 425 of the analog-to-digital converter module 405 is a digital signal output and is located on the digital clock and / or data line port of the analog-to-digital converter module 405.

[0180] In one embodiment, when testing the analog-to-digital converter module 405, the test input interface 415 is connected to a test signal generation device. This includes: Connect the DC voltage source to the test input interface 415. The DC voltage source outputs the first voltage. Read the second voltage output by the analog-to-digital converter module 405. The error between the second voltage and the first voltage is within the error range specified by the analog-to-digital converter module 405. And / or, Connect the output of the function signal generator to the test input interface 415 and the logic analyzer to the test output interface 425. The function signal generator outputs an analog signal, and the logic analyzer captures the clock waveform and data waveform. The content of the data waveform corresponds to the voltage of the analog signal. And / or, Connect the output of the function signal generator to the test input interface 415, and connect the digital channel of the oscilloscope to the test output interface 425. The function signal generator outputs a sine wave, and the digital channel of the oscilloscope represents a smooth, continuous sine wave without step-like quantization distortion or missing points.

[0181] For example, in one embodiment, for analog-to-digital conversion module 405, the process of generating a test signal by the test signal generation device includes: a stable DC voltage or a known analog signal (such as a 10Hz sine wave).

[0182] When testing the analog-to-digital converter module 405, connect a precise 1.0V DC voltage source to the test input interface 415.

[0183] In one embodiment, when testing the analog-to-digital converter module 405, the test output interface 424 is connected to the digital channel of a logic analyzer or oscilloscope. Furthermore, the conversion result of the analog-to-digital converter module 405 is read and displayed via a data processing device and a display module.

[0184] In one embodiment, when testing the analog-to-digital conversion module 405, the test includes: Analog-to-digital conversion static accuracy: The voltage value read and calculated by the data processing device is very close to 1.0V, and the error is within the range specified in the datasheet for analog-to-digital conversion module 405. Digital communication: The logic analyzer can capture regular SPI clock (SCLK) and data (MOSI) waveforms, and the data packet content corresponds to the input analog voltage.

[0185] Dynamic signal acquisition: When a 10Hz sine wave is input, a smooth and continuous sine waveform can be seen on the oscilloscope's real-time display interface, without step-like quantization distortion or missing points.

[0186] An embodiment of this application also proposes an electronic device. This electronic device is used to execute the method flow or part of the method flow of the training method described in the embodiment of this application.

[0187] In one embodiment, the electronic device includes a processor and a memory; The processor is used to execute instructions stored in the memory so that the electronic device performs the training method described in the embodiments of this application.

[0188] Specifically, in one embodiment of this application, the aforementioned one or more computer programs are stored in the aforementioned memory, and the aforementioned one or more computer programs include instructions that, when executed by the aforementioned processor, cause the aforementioned processor to perform the method steps of the training method described in the embodiment of this application.

[0189] It is understood that the structural description of the electronic device in this application does not constitute a specific limitation on the vehicle. In other embodiments of this application, the electronic device may include components other than a processor and memory.

[0190] Specifically, in one embodiment, the processor may include one or more processing units, such as an application processor (AP), a modem processor, a graphics processing unit (GPU), an image signal processor (ISP), a controller, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural network processing unit (NPU). The different processing units may be independent devices or integrated into one or more processors. The controller can generate operation control signals based on the instruction opcode and timing signals to control instruction fetching and execution.

[0191] The processor may also include memory for storing instructions and data. In some embodiments, the memory in the processor is a cache memory. This memory can store instructions or data that the processor has just used or that are used repeatedly. If the processor needs to use the instruction or data again, it can retrieve it directly from the memory. This avoids repeated accesses, reduces processor waiting time, and thus improves system efficiency.

[0192] In some embodiments, the processor may include one or more interfaces. Interfaces may include inter-integrated circuit (I2C) interfaces, inter-integrated circuit sound (I2S) interfaces, pulse code modulation (PCM) interfaces, universal asynchronous receiver / transmitter (UART) interfaces, mobile industry processor interfaces (MIPI), general-purpose input / output (GPIO) interfaces, subscriber identity module (SIM) interfaces, and / or universal serial bus (USB) interfaces, etc.

[0193] The memory can be used to store executable program code, including instructions. The memory may include a program storage area and a data storage area. The program storage area may store the operating system, at least one application program required for a function (such as sound playback, image playback, etc.), etc. The data storage area may store data created during the use of the electronic device (such as audio data, phonebook, etc.). Furthermore, the memory may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, universal flash storage (UFS), etc. The processor executes various functional applications and data processing of the electronic device by running instructions stored in the memory and / or instructions stored in memory disposed within the processor.

[0194] An embodiment of this application also proposes an electronic chip. This electronic chip is used to execute the method flow or part of the method flow of the training method described in the embodiment of this application.

[0195] Specifically, the electronic chip includes a processor for executing program instructions. When the computer program instructions are executed by the processor, the electronic chip is triggered to perform the steps described in the embodiments of this application. The processor of the electronic chip can refer to the processor of the above-described electronic device.

[0196] Optionally, the devices, apparatuses, and modules described in the embodiments of this application may be implemented by computer chips or physical entities, or by products with certain functions.

[0197] Those skilled in the art will understand that embodiments of this application can be provided as methods, apparatus, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media containing computer-usable program code.

[0198] In the several embodiments provided in this application, any function, if implemented as a software functional unit and sold or used as an independent product, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application.

[0199] Specifically, one embodiment of this application also provides a computer-readable storage medium storing a computer program that, when run on a computer, causes the computer to execute the method provided in the embodiment of this application.

[0200] An embodiment of this application also provides a computer program product, which includes a computer program that, when run on a computer, causes the computer to perform the method provided in the embodiment of this application.

[0201] The embodiments described in this application are described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (devices), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations. Figure 1One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0202] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0203] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0204] It should also be noted that in the embodiments of this application, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent the existence of A alone, the simultaneous existence of A and B, or the existence of B alone. A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one of the following" and similar expressions refer to any combination of these items, including any combination of singular or plural items. For example, at least one of a, b, and c can represent: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, and c can be single or multiple.

[0205] In this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0206] This application can be described in the general context of computer-executable instructions, such as program modules, that are executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc., that perform a specific task or implement a specific abstract data type. This application can also be practiced in distributed computing environments where tasks are performed by remote processing devices connected via a communication network. In distributed computing environments, program modules can reside in local and remote computer storage media, including storage devices.

[0207] The various embodiments in this application are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the device embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0208] Those skilled in the art will recognize that the units and algorithm steps described in the embodiments of this application can be implemented using electronic hardware, computer software, or a combination of electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0209] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the devices, apparatuses, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0210] The above description is merely a specific embodiment of this application. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the protection scope of this application. The protection scope of this application should be determined by the protection scope of the claims.

Claims

1. A multimodal bioelectric detection training device, characterized in that, The device includes: At least one bioelectric signal sensor module, the bioelectric signal sensor module being used to acquire bioelectric signals from the human body; At least one bioelectric signal isolation module, wherein the bioelectric signal isolation module is used to isolate the bioelectric signal sensor module; At least one amplification module is provided, which is used to amplify the bioelectric signal acquired by the bioelectric signal sensor module. At least one filtering module is provided, which is used to filter the amplification result of the amplification module; At least one analog-to-digital conversion module is provided, which is used to convert the analog signal filtered by the filtering module into a digital signal; as well as, A module replacement interface, wherein the module replacement interface includes any combination of one or more of the following interfaces: A sensor replacement interface is provided for connecting one or more bioelectric signal sensor modules from the at least one bioelectric signal sensor module. The sensor replacement interface is configured to allow replacement of the connected bioelectric signal sensor module. A bioelectric signal isolation replacement interface is provided for connecting to one or more bioelectric signal isolation modules in the at least one bioelectric signal isolation module, and the signal isolation replacement interface is configured to replace the bioelectric signal isolation module it connects to. An amplification replacement interface is provided for connecting to one or more of the at least one amplification module, and the amplification replacement interface is configured to replace the amplification module to which it is connected. A filter replacement interface is provided for connecting to one or more of the at least one filter module, and the filter replacement interface is configured to replace the filter module it connects to. An analog-to-digital converter (ADC) switching interface is used to connect to one or more of the at least one ADC module, and the ADC switching interface is configured to allow the ADC module it connects to to be interchangeable.

2. The device according to claim 1, characterized in that, The device further includes one or more of the following modules: a communication management module, a data transmission module, a storage module, and a data interface module, wherein: The communication management module is used to manage communication between different modules in the device; The data transmission module is used to output detection data and / or detection results; The storage module is used to save the detection data and / or detection results; The data interface module is used to provide a standard interface for the control module in the device, and the standard interface supports secondary development for various programming scenarios.

3. The device according to claim 1, characterized in that, The device also includes a power module, wherein the power module includes an input side for connecting to the human body and an output side for connecting to subsequent circuits, and the input side and the output side use mutually isolated independent power supplies.

4. The device according to claim 1, characterized in that, The amplification module and / or the filtering module are programmable modules.

5. The method according to any one of claims 1-4, characterized in that, One or more modules of the bioelectric signal sensor module, the bioelectric signal isolation module, the amplification module, the filtering module, and the analog-to-digital conversion module include a test interface. The test interface includes a test input interface for receiving test signals and a test output interface for outputting test result signals. The input side of the bioelectric signal isolation module is connected to the bioelectric signal sensor module, the input side of the bioelectric signal isolation module is connected to the amplification module, the test input interface of the bioelectric signal isolation module is located on the input side of the bioelectric signal isolation module, and the test output interface of the bioelectric signal isolation module is located on the output side of the bioelectric signal isolation module. And / or, The input side of the amplification module is connected to the bioelectric signal isolation module, the output side of the amplification module is connected to the filtering module, the test input interface of the amplification module is located on the input side of the amplification module, and the test output interface of the amplification module is located on the output side of the amplification module. And / or, The input side of the filtering module is connected to the amplification module, the output side of the filtering module is connected to the analog-to-digital conversion module, the test input interface of the filtering module is located on the input side of the filtering module, and the test output interface of the filtering module is located on the output side of the filtering module. And / or, The input side of the analog-to-digital converter (ADC) is connected to the filtering module. The test input interface of the ADC is located on the input side of the ADC, and the test output interface of the ADC is located on the digital clock and / or data line port of the ADC.

6. A practical training method, characterized in that, The method is applied to the device as described in any one of claims 1-6, and the method includes: The test signal is input to the module under test, wherein the module under test is any one or more of the bioelectric signal isolation module, amplification module, filtering module, and analog-to-digital conversion module of the device; The test results are obtained based on the output of the module to be tested.

7. The method according to claim 6, characterized in that, The method includes: The output of the function signal generator is connected in series with a resistor and then connected to the input terminal of the bioelectric signal isolation module. The resistor is used to simulate the contact impedance between the electrode and the skin. Connect the first channel probe of the dual-channel oscilloscope to the input terminal of the bioelectric signal isolation module, and connect the second channel probe to the output terminal of the bioelectric signal isolation module; Obtaining the test results includes: The test signal is output using the function signal generator. The test signal is a sine wave. The first and second channels of the dual-channel oscilloscope represent sine waves of the same frequency and phase. The amplitude ratio of the sine waves represented by the first and second channels of the dual-channel oscilloscope is 1:1 or a fixed unity gain. The waveform of the sine wave represented by the second channel of the dual-channel oscilloscope is undistorted. And / or, A common-mode signal is superimposed between the input terminal of the bioelectric signal isolation module and ground, and the second channel of the dual-channel oscilloscope indicates that the common-mode signal is suppressed; And / or, The resistance between the input and output terminals of the bioelectric signal isolation module was measured under power-off conditions, and the resistance value was found to be infinite.

8. The method according to claim 6, characterized in that, The method includes: Connect the output of the function signal generator to the input of the amplification module; Connect the first channel probe of the dual-channel oscilloscope to the input terminal of the amplification module, and connect the second channel probe to the output terminal of the amplification module; Set the gain of the amplification module to the first gain and obtain the test results, including: The test signal is output using the function signal generator. The test signal is used to simulate a bioelectric signal. The first and second channels of the dual-channel oscilloscope represent signals with the same frequency and phase. The waveform of the signal represented by the second channel of the dual-channel oscilloscope is undistorted. The amplitude ratio of the signal represented by the second channel of the dual-channel oscilloscope to the signal represented by the first channel of the dual-channel oscilloscope is the first gain. And / or, A common-mode signal is superimposed between the input terminal of the amplification module and ground, and the second channel of the dual-channel oscilloscope indicates that the common-mode signal is suppressed; And / or, The waveform of the signal represented by the second channel of the dual-channel oscilloscope is clean and free of clipping distortion.

9. The method according to claim 6, characterized in that, The method includes: Connect the output of the function signal generator to the input of the filtering module; Connect the first channel probe of the dual-channel oscilloscope to the input terminal of the filter module, and connect the second channel probe to the output terminal of the filter module; The high-pass cutoff frequency and low-pass cutoff frequency of the filter module are set, and the test signal is output using the function signal generator. The test signal is a composite signal, which includes a low-frequency noise signal for simulating baseline drift, an analog signal for simulating bioelectrical signals, and a high-frequency noise signal for simulating bioelectrical noise. Obtaining the test results includes: In the signal represented by the second channel of the dual-channel oscilloscope, the high-frequency noise signal component is attenuated, and the signal waveform represented by the second channel of the dual-channel oscilloscope is smooth. In the signal represented by the second channel of the dual-channel oscilloscope, the low-frequency noise signal component is suppressed, and the baseline of the signal represented by the second channel of the dual-channel oscilloscope is stable. The analog signal constitutes the largest proportion of the signal represented by the second channel of the dual-channel oscilloscope, and the waveform of the signal represented by the second channel of the dual-channel oscilloscope is clear.

10. The method according to claim 6, characterized in that, The method includes: A DC voltage source is connected to the input terminal of the analog-to-digital converter module. The DC voltage source outputs a first voltage. The second voltage output by the analog-to-digital converter module is read. The error between the second voltage and the first voltage is within the error range specified by the analog-to-digital converter module. And / or, The output of the function signal generator is connected to the input of the analog-to-digital converter module, and the logic analyzer is connected to the output of the analog-to-digital converter module. The function signal generator outputs an analog signal, and the logic analyzer captures the clock waveform and the data waveform. The content of the data waveform corresponds to the voltage of the analog signal. And / or, The output of the function signal generator is connected to the input of the analog-to-digital converter module, and the digital channel of the oscilloscope is connected to the output of the analog-to-digital converter module. The function signal generator outputs a sine wave, and the digital channel of the oscilloscope represents a smooth, continuous sine wave without step-like quantization distortion or missing points.

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