General electrocardiosignal acquisition module

Abstract

The invention discloses an electrocardiosignal acquisition universal module, and relates to the field of electrocardiosignal acquisition, and the module comprises an electrocardiosignal acquisition module which is used for acquiring electrocardiosignals; the main controller is connected with the electrocardio acquisition module and is used for converting different working modes according to the electrocardio signals and carrying out feature extraction on the electrocardio signals; and the user mainboard is connected with the main controller and is used for selecting a function mode of the universal electrocardiosignal acquisition module. The user operation threshold can be lowered, the development period is shortened, and resource waste is reduced.

Description

Technical Field

[0001] The present application relates to the field of electrocardiogram (ECG) signal acquisition, and in particular to a universal module for ECG signal acquisition. Background Art

[0002] ECG signals reflect the electrical activity inside the heart, including the electrical activity between the atria and ventricles and the electrical activity of the ventricles themselves, and cover important information such as the rhythm of the heartbeat, changes in morphology, and myocardial ischemia. At present, medical and health products mainly rely on self-designed circuit boards to achieve ECG signal acquisition functions, lacking universal module design. This practice has led to a longer product development cycle, requiring professionals to develop weak signal processing algorithms, increasing the difficulty of product development, and also causing a waste of resources. Summary of the invention

[0003] Based on this, the purpose of this application is to provide a universal module for ECG signal acquisition that achieves high integration, high stability and miniaturization.

[0004] To achieve the above objectives, this application provides the following solutions:

[0005] A universal module for collecting electrocardiogram signals, comprising:

[0006] ECG acquisition module, used for collecting ECG signals;

[0007] A main controller, connected to the ECG acquisition module, for switching different working modes according to the ECG signal and performing feature extraction on the ECG signal;

[0008] The user mainboard is connected to the main controller and is used to select the functional mode of the ECG signal acquisition universal module.

[0009] According to the specific embodiments provided in this application, this application has the following technical effects:

[0010] The present application provides a universal module for ECG signal acquisition, which can be integrated into various devices as a universal module, making it easier to integrate the ECG signal acquisition function into different products. By integrating the ECG signal acquisition function, the module can improve production efficiency, reduce production costs, and speed up product development. At the same time, it has higher signal acquisition accuracy, can accurately capture and analyze ECG signals, and provide more accurate data for medical diagnosis or health monitoring. The module has strong compatibility and can be seamlessly connected with a variety of devices or systems, which improves the scope of application of the product. In the process of designing the module, the design is simple and easy to use, which lowers the threshold for user operation, shortens the development cycle, reduces resource waste, and allows more people to conveniently use this universal module for ECG signal acquisition. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0012] Figure 1 A schematic diagram of the structure of a universal module for collecting electrocardiogram signals according to an embodiment of the present application. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0014] The purpose of this application is to achieve highly integrated, highly stable and miniaturized ECG signal acquisition universal module integration. This innovation aims to reduce resource waste, shorten product development time, and reduce development difficulty, providing a more convenient and efficient solution for the further development of ECG monitoring products.

[0015] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0016] In an exemplary embodiment, Figure 1 As shown, a universal module for collecting ECG signals is provided, including an ECG collection module 1, a main controller 2 and a user mainboard 3. The ECG module 1 is used to collect ECG signals. The main controller 2 is connected to the ECG collection module 1, and is used to convert different working modes according to the ECG signals and extract features of the ECG signals; the working modes include a low power consumption mode and a real-time monitoring mode. The user mainboard 3 is connected to the main controller 2, and is used to select the functional mode of the universal module for collecting ECG signals; the functional modes include outputting ECG waveforms, outputting heart rates, outputting RR interval values, and outputting HRV parameters.

[0017] In a specific embodiment, the ECG acquisition module 1 includes an acquisition electrode and an analog front-end chip. The acquisition electrode is attached to the human body and connected to the input end of the ECG lead interface pin through a lead wire. The output end of the ECG lead interface pin is connected to the input end of the analog front-end chip. The analog front-end chip amplifies and filters the collected ECG signal and outputs it in the form of a data frame through the SPI peripheral port. At the same time, the analog front-end chip can realize the lead-off detection function, and detect the lead-off by measuring the impedance between the acquisition electrodes. When the lead is off, the impedance between the acquisition electrode and the skin will increase significantly. When detecting the lead off, the analog front-end chip can detect the state of the lead by injecting a small current, and this injected current can help determine whether the lead is off or has poor contact. The analog front-end chip transmits the lead status to the main controller through the output end in real time.

[0018] Analog front-end chips include but are not limited to Texas Instruments' ADS129X series chips and Xicheng Semiconductor's CN121 series chips. Among them, Texas Instruments' ADS129X series chips are used for human ECG signal measurement, with low-power, 8-channel, 24-bit analog front-end, and support standard 12-lead measurement methods. Xicheng Semiconductor's CN121 series chips are low-power single-lead medical-grade ECG sensor chips that support common three-electrode measurement methods and special two-electrode measurement methods.

[0019] In a specific embodiment, the main controller 2 receives the ECG signal and the lead-off detection signal transmitted by the ECG acquisition module 1, and implements the conversion of different working modes, the filtering processing of the signal and the extraction of characteristic values, and sends the data to the user mainboard 3 through the communication pin. The types of working modes include low power consumption mode and real-time monitoring mode. When the main controller 2 detects that the ECG acquisition module 1 has not collected a valid ECG signal in a preset time period or the user mainboard 3 does not need real-time monitoring, it will switch to the low power consumption mode. When the main controller 2 detects that the ECG signal acquisition module 1 has collected a valid ECG signal in a preset time period and the user mainboard 3 needs real-time monitoring, it switches to the real-time monitoring mode. During the ECG signal acquisition process, the ECG signal may contain noise and interference, and filtering processing is required to remove these interferences and retain useful information in the ECG signal. Characteristic value extraction is to describe the characteristics of the ECG signal by calculating the specific features of the ECG signal. This may include heart rate, HRV and ST segment changes. By extracting characteristic values, medical staff can be helped to diagnose and analyze ECG signals, such as abnormal heart rate, heart disease, etc. Characteristic values ​​can be used for health monitoring and disease early warning to help users monitor heart health in real time. At the same time, the extracted characteristic values ​​can be transmitted to the user mainboard 3 in a simplified data form, reducing the amount of data transmission while retaining important information.

[0020] In a specific embodiment, the main controller 2 is a single-chip microcomputer chip with a Cotex-m4 core, including but not limited to STM32F4 series, GD32F3 series, etc. The single-chip microcomputer chip includes an SPI peripheral port, an IIC peripheral port, a UART peripheral port and a GPIO peripheral port.

[0021] One end of the communication pin is connected to the SPI peripheral port, IIC peripheral port, and UART peripheral port of the microcontroller chip, and the other end of the communication pin is connected to the wire of the user mainboard 3 to meet various communication requirements between the user mainboard 3 and this module.

[0022] One end of the status pin is connected to the GPIO peripheral port of the single-chip microcomputer chip, and the other end is connected to the wire of the user mainboard 3, and is used to send the status of the main controller 2 after initialization to the user mainboard 3.

[0023] One end of the control pin is connected to the GPIO peripheral port of the single-chip microcomputer chip, and the other end is connected to the wire of the user mainboard 3. The user mainboard 3 turns on the module through the control pin. After the module is powered on, it performs internal initialization. After the initialization is completed, the user mainboard 3 is informed through the status pin.

[0024] The user mainboard 3 sends a command to this module through the communication pin to select the functional mode of this module, including four functional modes of outputting ECG waveform, outputting heart rate, outputting RR interval value and outputting HRV parameters. The main controller 2 calls different functional modes according to the received commands. The user mainboard 3 can flexibly select the functional mode of the ECG acquisition module by sending different commands to meet different needs. This flexibility can make the device suitable for a variety of application scenarios. By command-controlling the functional mode, the user can customize the specific parameters and settings of the ECG signal acquisition, so that the acquisition effect is more in line with specific needs and enhances the customization capability. Since the functional mode of the module can be updated by command, the software can be upgraded without changing the hardware, adding new functions or improving existing functions, and extending the service life of the product. Using this command control method, control elements such as switches or buttons on the hardware can be reduced, saving costs and space, and also reducing the complexity of the product.

[0025] The ECG signal acquisition universal module provided in the present application also includes: a power management module 4, which is connected to the ECG acquisition module 1 and the main controller 2 respectively, and is used to power the ECG acquisition module 1 and the main controller 2. The user mainboard 3 supplies power to the power management module 4 through the power supply pin, and the power management module 4 converts the power into a fixed 3.3V, +5V and bipolar power supply to power other modules of the module.

[0026] In a specific embodiment, the power management module 4 includes a DC-DC power chip, a charge pump chip, and an LDO chip. The input end of the DC-DC power chip is connected to the output of the power supply pin, and the power supply voltage is converted into a fixed 5V voltage output. The output end of the DC-DC power chip is respectively connected to the input end of the charge pump chip and the input end of the LDO chip. The output end of the charge pump chip is connected to the analog front-end chip, and the charge pump chip converts a bipolar power supply output to the analog front-end chip. The output end of the LDO chip is connected to the main controller 2, and the LDO chip converts it into a 3.3V power supply output to the main controller 2.

[0027] DC-DC power supply chips include but are not limited to Texas Instruments' PS63802DLAR, charge pump chips include but are not limited to Texas Instruments' LM27762DSSR, and LDO chips include but are not limited to Siwang's SE5218ALG-LF.

[0028] The ECG signal acquisition universal module provided by the present application is that the user mainboard 3 turns on the module through the control pin. After the module is powered on, internal initialization is performed. After the initialization is completed, the user mainboard 3 is informed through the status pin; the user mainboard 3 sends a command to the main controller 2 through the communication pin to select different functional modes; the ECG acquisition module 1 amplifies and processes the ECG signal collected by the electrode and transmits it to the main controller 2. The main controller 2 processes the data in real time and converts it according to the functional mode selected by the user mainboard 3, and transmits the data to the user mainboard 3 through the communication pin. This module has a variety of pins, which can be used by customers to realize complex mode selection and applied to a variety of special scenarios. The module has strong compatibility and can be seamlessly connected with a variety of devices or systems, which improves the scope of application of the product. In the process of designing the module, the design is simple and easy to use, which lowers the threshold for user operation, shortens the development cycle, reduces resource waste, and enables more people to use this module conveniently.

[0029] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0030] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for those skilled in the art, according to the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. A universal module for collecting electrocardiogram signals, characterized in that: include: ECG acquisition module, used for collecting ECG signals; A main controller, connected to the ECG acquisition module, for switching different working modes according to the ECG signal and performing feature extraction on the ECG signal; The user mainboard is connected to the main controller and is used to select the functional mode of the ECG signal acquisition universal module.

2. The universal module for collecting ECG signals according to claim 1, characterized in that: The ECG acquisition module includes: acquisition electrodes and an analog front-end chip; the acquisition electrodes are attached to the human body, the acquisition electrodes are connected to the analog front-end chip through lead wires, and the analog front-end chip is used to amplify and filter the ECG signals acquired by the acquisition electrodes.

3. The universal module for collecting ECG signals according to claim 2, characterized in that: The analog front-end chip is also used to detect lead shedding by measuring the impedance between the acquisition electrodes.

4. The universal module for collecting ECG signals according to claim 1, characterized in that: The working modes include a low power consumption mode and a real-time monitoring mode; when the main controller detects that the ECG acquisition module has not collected valid ECG signals during a preset time period or the user mainboard does not need real-time monitoring, it switches to the low power consumption mode; when the main controller detects that the ECG acquisition module has collected valid ECG signals during a preset time period and the user mainboard needs real-time monitoring, it switches to the real-time monitoring mode.

5. The universal module for collecting ECG signals according to claim 1, characterized in that: The functional modes include: outputting ECG waveform, outputting heart rate, outputting RR interval value and outputting HRV parameters.

6. The universal module for collecting ECG signals according to claim 1, characterized in that: The main controller is a single-chip microcomputer chip; the single-chip microcomputer chip includes an SPI peripheral port, an IIC peripheral port, a UART peripheral port and a GPIO peripheral port.

7. The universal module for collecting ECG signals according to claim 6, characterized in that: The SPI peripheral port, the IIC peripheral port and the UART peripheral port of the single-chip microcomputer chip are connected to the user mainboard via communication pins, and the GPIO peripheral port of the single-chip microcomputer chip is connected to the user mainboard via a status pin and a control pin.

8. The universal module for collecting ECG signals according to claim 2, characterized in that: The ECG signal acquisition universal module also includes: The power management module is connected to the ECG acquisition module and the main controller respectively, and is used to supply power to the ECG acquisition module and the main controller.

9. The universal module for collecting ECG signals according to claim 8, characterized in that: The power management module includes: a DC-DC power supply chip, a charge pump chip and an LDO chip; the output end of the DC-DC power supply chip is respectively connected to the input end of the charge pump chip and the input end of the LDO chip, the output end of the charge pump chip is connected to the analog front-end chip, and the output end of the LDO chip is connected to the main controller.

10. The universal module for collecting ECG signals according to claim 8, characterized in that: The user mainboard is connected to the power management module via a power supply pin, and the user mainboard supplies power to the power management module via the power supply pin.

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