A portable electrocardio acquisition device

Abstract

A portable electrocardio acquisition device aims to solve the problems of large volume, high power consumption, weak anti-interference ability and wireless data loss of traditional electrocardio devices, comprising: an electrocardio acquisition module, which integrates a low-noise amplifier and a 24-bit Sigma-Delta analog-to-digital converter, adopts AgCl gel electrodes to suppress baseline drift and acquire signals; a storage module, which contains a FLASH storage chip and a MicroSD expansion slot, ensures data temporary storage when wireless interruption occurs; a control module, which realizes signal compression coding and adaptive sampling rate adjustment through a low-power controller; a wireless communication module, which supports Bluetooth, GPRS, 3G / 4G transmission of data to a remote terminal; and a power module, which adopts a voltage division power supply and a power consumption throttling strategy to prolong the endurance. The present application reduces noise interference through laminated circuit design and single-point grounding, guarantees data reliability through high-precision signal acquisition and storage, and realizes portability, low power consumption and intelligent analysis through multi-module cooperation, and is suitable for home, clinic and remote medical scenarios.

Description

Technical Field

[0001] This invention relates to the field of electrocardiogram (ECG) acquisition and detection, specifically to a portable ECG acquisition device. This device integrates a self-developed ECG acquisition chip, a FLASH storage chip, a GPS module, and a wireless communication module, and introduces innovative technologies to improve the accuracy, stability, and convenience of ECG signal acquisition. It is suitable for ECG monitoring needs in various settings such as homes, medical clinics, and hospitals. Background Technology

[0002] Currently, electrocardiogram (ECG) acquisition devices are widely used in the medical field, but they generally suffer from several problems. First, traditional ECG acquisition devices are bulky and inconvenient to carry, making it difficult to meet the needs of daily ECG monitoring anytime, anywhere. Second, these devices have high power consumption and limited battery life, hindering long-term continuous ECG data acquisition. Furthermore, ECG signals are easily affected by external interference during acquisition, resulting in poor signal quality and affecting the accuracy of the ECG data. Additionally, existing devices generally lack data storage capabilities; once the wireless connection is interrupted, data acquisition and storage cannot continue, potentially leading to data loss.

[0003] To address the aforementioned issues, several improvements have been proposed. For example, patent CN205251533U discloses a pendant-type dynamic electrocardiogram (ECG) monitoring device. This device integrates an ECG acquisition module, a wireless communication module, and a peripheral circuit module, featuring high accuracy, small size, extremely low power consumption, and strong anti-interference capabilities. It is easy to carry and can continuously acquire human ECG signals for extended periods. However, this device still needs improvement in further reducing power consumption and extending battery life. Another example is patent CN106491122A, which discloses an ECG acquisition terminal based on Bluetooth wireless transmission. This terminal includes a microcontroller module, an ECG acquisition module, a storage module, an indicator module, and a power interface module. It enables real-time acquisition, transmission, analysis, and diagnosis of ECG data, featuring low cost, low power consumption, small size, and ease of operation. However, this invention still has room for improvement in enhancing the accuracy of ECG acquisition and adding ECG analysis and diagnostic functions.

[0004] While the aforementioned patents have addressed some of the problems in existing technologies, they still have shortcomings. Therefore, this invention aims to provide a more complete portable ECG acquisition device. By integrating advanced components such as a self-developed ECG acquisition chip and a high-capacity FLASH storage chip, and combining innovative technologies, it achieves high-precision acquisition, storage, and remote transmission of ECG signals, while also providing intelligent ECG analysis and diagnostic functions to meet the ECG monitoring needs in different scenarios. Summary of the Invention

[0005] To address the shortcomings of existing ECG acquisition devices, this invention aims to provide a portable ECG acquisition device. By introducing a self-developed ECG acquisition chip, FLASH storage chip, GPS module, wireless communication module, and a series of innovative technologies, it achieves high-precision acquisition, storage, remote transmission, and intelligent analysis and diagnosis of ECG signals, significantly improving the practicality and accuracy of the portable ECG acquisition device.

[0006] The technical solution of this invention is summarized as follows:

[0007] A portable electrocardiogram (ECG) acquisition device, characterized in that it includes:

[0008] The ECG acquisition module integrates a low-noise amplifier and a 24-bit analog-to-digital converter for acquiring and converting ECG signals;

[0009] The storage module, which includes a FLASH storage chip and its peripheral circuitry, is used to temporarily store ECG data when the wireless connection is interrupted.

[0010] The control module uses a low-power controller to control the working mode of the ECG acquisition module through the SPI interface and compresses and encodes the data in the storage module.

[0011] The wireless communication module supports at least one wireless communication method and is used to transmit compressed ECG data remotely to a remote monitoring center or mobile terminal in real time.

[0012] The power module, including the lithium battery and overcharge and over-discharge protection circuit, provides voltage divider power to each module;

[0013] The electrocardiogram (ECG) acquisition module uses AgCl gel electrodes as non-polarized electrodes to acquire human ECG signals and suppress baseline drift.

[0014] Furthermore, the peripheral circuit of the ECG acquisition module includes a low-noise operational amplifier, a reference voltage source, and a filter circuit. It adopts a stacked structure to separate the digital circuit and the analog circuit, and reduces noise interference through a single-point grounding design.

[0015] Furthermore, the storage module also includes a MicroSD card expansion slot to expand storage capacity and meet the needs of long-term, uninterrupted ECG data acquisition.

[0016] Furthermore, it includes a GPS module, which uses global positioning technology to synchronously record location information during ECG data acquisition.

[0017] Furthermore, the wireless communication module supports at least one of Bluetooth, GPRS, 3G or 4G communication methods.

[0018] Furthermore, it also includes an accelerometer to monitor human motion and synchronize acceleration data with electrocardiogram data to a remote monitoring center or mobile terminal.

[0019] Furthermore, it also includes an intelligent ECG analysis and diagnosis module, which is used to intelligently analyze and diagnose the collected ECG data, and provide preliminary ECG abnormality warnings and diagnostic suggestions.

[0020] Furthermore, the intelligent ECG analysis and diagnosis module is connected to a remote medical platform to enable cloud storage and analysis of ECG data.

[0021] Furthermore, it also includes a high-resolution OLED display for showing ECG data and device status information.

[0022] Furthermore, the ECG acquisition module adopts a stacked structure to separate digital and analog circuits, and uses a single-point grounding design to reduce the impact of external interference on the ECG signal.

[0023] Furthermore, the power module adopts multiple separate power supply schemes, providing independent operating voltages to the digital circuit, analog circuit and wireless communication module respectively, and turning off the display screen and Bluetooth module when not in use to reduce power consumption.

[0024] Furthermore, the analog-to-digital converter of the ECG acquisition module is of the Sigma-Delta type, which directly acquires electrode signals and extends the device's battery life through a power throttling strategy.

[0025] Compared with the prior art, the technical effects of the present invention are as follows:

[0026] 1) Improve signal quality: Through self-developed ECG acquisition chip, intelligent preprocessing algorithm and multi-functional electrode design, the acquisition accuracy and stability of ECG signals have been significantly improved.

[0027] 2) Enhanced convenience: The device is small in size and consumes little power, making it easy to carry and use, and can be used for ECG monitoring anytime and anywhere.

[0028] 3) Enhanced data security: The large-capacity FLASH storage chip ensures that no data is lost when the wireless connection is interrupted, while the intelligent ECG analysis and diagnosis provides preliminary diagnostic results, providing more protection for patients' health.

[0029] 3) Expanding application scenarios: Innovative technologies such as adaptive sampling rate adjustment, GPS positioning, and multiple wireless communication methods make this device suitable for a wider range of ECG monitoring scenarios, such as home health monitoring and remote medical consultation. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the portable electrocardiogram (ECG) acquisition device of the present invention. Detailed Implementation

[0031] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments. However, please note that this does not imply a limitation on the scope of protection of the present invention.

[0032] The portable electrocardiogram (ECG) acquisition device of the present invention mainly consists of the following parts:

[0033] ECG Acquisition Module: This module includes a low-noise amplifier, a 24-bit high-precision analog-to-digital converter (ADC), and necessary signal processing circuitry. The low-noise amplifier amplifies the weak ECG signal to reduce noise interference. The 24-bit high-precision ADC converts the amplified ECG signal into a digital signal for subsequent processing and analysis. The signal processing circuitry performs filtering, noise reduction, and other preprocessing on the digital signal to improve its accuracy and stability. This module employs a layered structure, separating digital and analog circuits to reduce the interference of digital noise on the analog signal. Simultaneously, a single-point grounding design ensures circuit stability.

[0034] Storage module: A small-sized, high-capacity FLASH memory chip is used to temporarily store ECG data when the wireless connection is interrupted. The FLASH memory chip has non-volatile storage characteristics, so the stored data will not be lost even if the device is powered off.

[0035] Control module: Employs a low-power controller, which controls the operating mode of the ECG acquisition module via an SPI interface and compresses and encodes the data in the storage module;

[0036] GPS Module: Employs global positioning technology to provide real-time device location information. The GPS module connects to the self-developed ECG acquisition chip module via a serial communication interface to achieve location information transmission and synchronization.

[0037] The wireless communication module supports multiple wireless communication methods such as Bluetooth, GPRS, 3G, or 4G, allowing users to select the appropriate method based on their specific needs. The wireless communication module connects to the ECG acquisition module via a serial communication interface, enabling real-time remote transmission of ECG data.

[0038] Accelerometer sensor module: Used to monitor human motion and synchronously upload acceleration data and electrocardiogram (ECG) data to a remote monitoring center or mobile terminal. The accelerometer sensor and ECG acquisition module are connected via I2C or SPI communication interface.

[0039] Intelligent ECG Analysis and Diagnosis Module: This module includes an algorithm processing unit and a diagnostic database. The algorithm processing unit performs intelligent analysis and diagnosis on the collected ECG data, providing preliminary warnings and diagnostic suggestions for ECG abnormalities. The diagnostic database stores diagnostic criteria and cases for common ECG abnormalities for the algorithm processing unit to reference and compare.

[0040] Display module: Employs a high-resolution OLED display for showing ECG data and device status information. The OLED display is connected to the self-developed ECG acquisition chip module via a parallel communication interface.

[0041] Power Management Module: Responsible for providing a stable power supply to the entire device and monitoring its battery status. The power management module adopts a low-power design to extend the device's battery life.

[0042] The working principle of this invention is as follows:

[0043] When a user wears or touches the device of this invention, the ECG acquisition module collects ECG signals via AgCl gel electrodes. The acquired ECG signals are converted into digital signals by a low-noise amplifier and a 24-bit high-precision analog-to-digital converter, and then preprocessed. The preprocessed ECG data is stored in a FLASH memory chip, awaiting transmission from the wireless communication module. When the device is in a wireless connection state, the wireless communication module transmits the ECG data remotely to a remote monitoring center or mobile terminal in real time. Simultaneously, the GPS module provides the device's location information, the accelerometer monitors the user's movement status, and uploads relevant data synchronously. The intelligent ECG analysis and diagnosis module performs intelligent analysis and diagnosis on the received ECG data, providing preliminary ECG abnormality warnings and diagnostic suggestions. Users can view the ECG data and device status information on a high-resolution OLED display.

[0044] Example 1:

[0045] The ECG acquisition chip is model ADS1293, employing a 24-bit Sigma-Delta analog-to-digital converter with noise below 3μVrms; the FLASH memory chip is model Winbond W25N01GVZEIG, with a capacity of 1Gb; the low-power controller is model TI MSP430FR5969, using a Cortex-M4 core; and the Bluetooth module is model CSR BC127, supporting BLE 5.0, etc. These hardware configurations collectively achieve the device's high performance and portability.

[0046] The operation steps are as follows:

[0047] 1. Power-on and initialization:

[0048] When the user presses the power button on the device, the device starts up and performs initialization operations.

[0049] After initialization, the device enters standby mode, waiting for the user to perform ECG data acquisition.

[0050] 2. Electrocardiogram (ECG) acquisition:

[0051] Users should wear or touch the device to ensure that the AgCl gel electrode is in close contact with the skin.

[0052] The device automatically begins collecting electrocardiogram (ECG) signals, and then preprocesses and stores them.

[0053] 3. Data transmission:

[0054] When the device is in a wireless connection state, the wireless communication module automatically transmits ECG data remotely to a remote monitoring center or mobile terminal.

[0055] Users can view the received ECG data and diagnostic results through a mobile app or computer client.

[0056] 4. Data Analysis and Diagnosis:

[0057] Software on a remote monitoring center or mobile terminal performs further analysis and diagnosis on the received electrocardiogram data.

[0058] Based on the analysis results, the software provides preliminary warnings and diagnostic suggestions for ECG abnormalities.

[0059] 5. Equipment maintenance:

[0060] Users can periodically check the device's battery status and charge it promptly when the battery is low.

[0061] The device has a low-power standby mode, which allows users to put the device into standby mode to extend battery life when not in use.

[0062] 6. Data backup and recovery:

[0063] Users can back up ECG data to external storage devices via the MicroSD card expansion slot.

[0064] When needed, users can restore the backed-up data to the device or remote monitoring center for further analysis.

[0065] The portable ECG acquisition device of the present invention has the advantages of simple structure, convenient operation and comprehensive functions. It can realize high-precision acquisition, storage, remote transmission and intelligent analysis and diagnosis of ECG signals, and provide medical staff with accurate and timely ECG monitoring services.

Claims

1. A portable electrocardiogram (ECG) acquisition device, characterized in that, include: The ECG acquisition module integrates a low-noise amplifier and a 24-bit analog-to-digital converter for acquiring and converting ECG signals; The storage module, which includes a FLASH storage chip and its peripheral circuitry, is used to temporarily store ECG data when the wireless connection is interrupted. The control module uses a low-power controller to control the working mode of the ECG acquisition module through the SPI interface and compresses and encodes the data in the storage module. The wireless communication module supports at least one wireless communication method and is used to transmit compressed ECG data remotely to a remote monitoring center or mobile terminal in real time. The power module, including the lithium battery and overcharge and over-discharge protection circuit, provides voltage divider power to each module; The electrocardiogram (ECG) acquisition module uses AgCl gel electrodes as non-polarized electrodes to acquire human ECG signals and suppress baseline drift.

2. The portable ECG acquisition device according to claim 1, characterized in that, The peripheral circuit of the ECG acquisition module includes a low-noise operational amplifier, a reference voltage source, and a filter circuit. It adopts a stacked structure to separate the digital circuit and the analog circuit, and reduces noise interference through a single-point grounding design.

3. The portable ECG acquisition device according to claim 1, characterized in that, The storage module also includes a MicroSD card expansion slot to expand storage capacity and meet the needs of long-term, uninterrupted ECG data acquisition.

4. The portable ECG acquisition device according to claim 1, characterized in that, It also includes a GPS module, which uses global mobile positioning technology to synchronously record location information during ECG data acquisition.

5. The portable electrocardiogram (ECG) acquisition device according to claim 1 or 2, characterized in that, The wireless communication module supports at least one of Bluetooth, GPRS, 3G or 4G communication methods.

6. The portable electrocardiogram (ECG) acquisition device according to claim 1 or 2, characterized in that, It also includes an accelerometer to monitor human motion and synchronize acceleration data with electrocardiogram data to a remote monitoring center or mobile terminal.

7. The portable electrocardiogram (ECG) acquisition device according to claim 1 or 2, characterized in that, It also includes an intelligent ECG analysis and diagnosis module, which is used to intelligently analyze and diagnose the collected ECG data, and provide preliminary ECG abnormality warnings and diagnostic suggestions.

8. The portable ECG acquisition device according to claim 7, characterized in that, The intelligent electrocardiogram (ECG) analysis and diagnosis module interfaces with a remote medical platform to enable cloud storage and analysis of ECG data.

9. The portable electrocardiogram (ECG) acquisition device according to any one of claims 1-8, characterized in that, It also includes a high-resolution OLED display for showing ECG data and device status information.

10. The portable electrocardiogram (ECG) acquisition device according to any one of claims 11-8, characterized in that, The ECG acquisition module adopts a stacked structure to separate digital and analog circuits and uses a single-point grounding design to reduce the impact of external interference on the ECG signal.

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