CN105354418A - Smart phone based ECG early warning system - Google Patents

Abstract

The present invention proposes an ECG early warning system based on smart phones. This method solves the drawbacks that most of the ECG signal analysis programs in the past rely on the server side and the problem that the ECG client cannot issue early warnings in real time. At the same time, it adds synchronous acquisition acceleration. The signal provides motion and posture information for accurate analysis of ECG signals. The system includes signal acquisition front-end, bluetooth data transmission, ECG storage and analysis system on android system, back-end server system and early warning system. It has the advantages of high real-time performance, large capacity, small size and good interactive interface. Collect ECG signals 24 hours a day and provide cardiac diagnosis information, providing reference for doctors and users. When the heart is abnormal, it will give an alarm prompt, and provide remote consultation and emergency help functions, so as to ensure personal safety.

Description

ECG early warning system based on smart phone

technical field

The invention relates to the field of smart medical care, in particular to a design method for an ECG early warning system based on a smart phone.

Background technique

With the further development of economy and society, people's pace of life and work pressure will further increase. The latest medical research reports show that the incidence of heart disease is on the rise. ECG signal is the most intuitive and clinically applied cardiac examination technique in heart disease examination, but the ECG equipment in hospitals is usually bulky and poor in mobility, so some portable ECG equipment emerged as the times require. Although this type of portable ECG device is relatively small, it is still not very convenient because there are many connecting cables. At the same time, most of the automatic analysis programs of ECG signals in the existing mobile phone software depend on the server side, and the functions of the client side are not satisfactory, which is also the bottleneck of the large-scale application of networked health monitoring programs. In addition, such devices are usually composed of ECG acquisition modules, ECG transmission modules, ECG display, storage, and analysis modules. The volume can meet the requirements of miniaturization, but these modules are concentrated in one device, so it is It is not possible to consider separating the ECG signal acquisition from the ECG signal storage and display. The ECG signal acquisition module is listed separately, and the ECG signal display, storage, analysis module and early warning module are implemented on some mature smart phone platforms.

Contents of the invention

Technical problem: The technology of this invention aims to develop a real-time ECG signal intelligent analysis system based on the Android platform, and provide an ECG early warning system based on a smart phone. The system has high real-time performance, large capacity, small volume, and a good interactive interface. Advantages, all-weather monitoring function. More importantly, the heart diagnosis information will be given to provide reference for doctors and users. When the heart is abnormal, it will give an alarm prompt, and provide remote consultation and emergency help functions, so as to ensure personal safety. The invention is simple in structure, convenient and practical.

Technical scheme: a kind of ECG early warning system based on smart phone of the present invention comprises the following parts:

1) Acquisition module:

The acquisition module is composed of ADS1294 chip and YD30 acceleration sensor. The ADS1294 chip contains all the features usually required by all medical ECG signal applications; the YD30 acceleration sensor can measure the acceleration from DC to up to 2.5kHz within ±1g~±18g; the acquisition module collects the ECG signal and acceleration signal through SPI The interface is transmitted to the microprocessor for processing; the microprocessor adopts the MSP430F149 chip launched by TI Company, and after the processing is completed, it is transmitted to the Bluetooth module through the UART serial port.

2) ECG signal Bluetooth transmission module:

The Bluetooth transmission module uses the BLK-MD-BC04-B module for transmission. After receiving the ECG data transmitted by the UART serial port, it establishes Bluetooth pairing with a smartphone based on the Android system in the same local area network, and completes the pairing and connection. , and then transmit the ECG data;

3) ECG signal display storage analysis and early warning module:

After receiving the ECG data, the smartphone based on the Android system realizes the dynamic display, storage and analysis of the ECG signal on the mobile phone; The electrical data is abnormal;

4) Central server module:

The user's basic information and past ECG data are stored on the server, and the server can be accessed through an Android-based smartphone to read the information and data and return them to the mobile phone for display;

5) Remote consultation and emergency rescue module:

In order to improve the usability and safety of the system, the remote consultation function and the emergency rescue function module are added, and the family members can be dialed by pressing the dial button, and the family members can take rescue measures in time.

The ECG signal transmission method of the ECG early warning system based on smart phone of the present invention is:

After the acquisition module collects the ECG signal and acceleration signal, it transmits it to the microprocessor through the SPI interface for processing. After the processing is completed, it transmits it to the Bluetooth module in the ECG device through the UART serial port; after the Bluetooth module receives the data, it starts to communicate with the Android phone. After pairing, after the pairing and connection are completed, the ECG data will be transmitted to the mobile phone; the ECG signal display, storage and analysis on the mobile phone and the early warning module will realize the dynamic display, storage and analysis of the ECG signal on the mobile phone after receiving the data; Next, the mobile phone chooses to upload the ECG data to the central server through 3G or WIFI, and the central server processes the user's data query or data manipulation request, and the mobile phone obtains the user's historical ECG data by accessing the central server; remote consultation and emergency help on the mobile terminal While allowing users to interact with online doctors through the server, the module also adds an emergency dial button to complete the emergency call function.

Beneficial effect:

1. Design a complete set of ECG signal acquisition and analysis system based on Android smartphone system, including: signal acquisition front-end, Bluetooth data transmission, ECG storage and analysis system on Android system, back-end server system and early warning system .

2. For the needs of 24-hour monitoring and motion monitoring, the wireless separation design of the amplification acquisition and display storage analysis module is adopted to reduce interference channels, increase system portability and reduce costs. .

3. Synchronously collect ECG signals and acceleration signals to provide motion and posture information for accurate analysis of ECG signals.

4. Add extended functions, such as the alarm function, the function of consulting a doctor and the function of emergency help, to improve the practical value of the program.

Description of drawings

Fig. 1 is the general block diagram of the system of the present invention.

detailed description

1) Acquisition module:

The acquisition module is composed of ADS1294 chip (product of TI Company) and YD30 acceleration sensor (product of Shanghai Cezheng Automation Instrument Co., Ltd.). The ADS1294 chip contains all the features usually required by all medical ECG signal applications; the YD30 acceleration sensor can measure the acceleration from DC to up to 2.5kHz within ±1g~±18g; the acquisition module collects the ECG signal and acceleration signal through SPI The interface is transmitted to the microprocessor for processing; the microprocessor adopts the MSP430F149 chip launched by TI Company, and after the processing is completed, it is transmitted to the Bluetooth module through the UART serial port.

2) ECG signal Bluetooth transmission module:

The Bluetooth transmission module uses the BLK-MD-BC04-B module (a product specially designed for intelligent wireless data transmission by Shenzhen Boluke Electronic Technology Co., Ltd.) for transmission. After receiving the ECG data transmitted by the UART serial port, it communicates with Establish Bluetooth pairing with Android-based smartphones in the same local area network, and then transmit ECG data after pairing and connection are completed;

3) ECG signal display storage analysis and early warning module:

After receiving the ECG data, the smartphone based on the Android system realizes the dynamic display, storage and analysis of the ECG signal on the mobile phone; The electrical data is abnormal;

4) Central server module:

The user's basic information and past ECG data are stored on the server, and the server can be accessed through an Android-based smartphone to read the information and data and return them to the mobile phone for display;

5) Remote consultation and emergency rescue module:

In order to improve the usability and safety of the system, the remote consultation function and the emergency rescue function module are added, and the family members can be dialed by pressing the dial button, and the family members can take rescue measures in time.

Open the application, and the main interface of the application appears, which is relatively simple, just to realize the functions of this system, the interface beautification and adding functions will be further developed as follow-up work. This interface contains an input box and two buttons. After entering the user name in the input box, click the "Query" button. If the central server has stored the relevant information of the user, it will be displayed at the bottom left of the screen. If There will be a corresponding prompt if there is no relevant information.

After entering the user name "Zhang San", click the query button, the application will connect to the remote central server, obtain information from the server and return it, and you can see some basic information of the user appears in the lower left corner of the screen, such as name, gender, age, Health status and the location where ECG signal data is stored, etc. If there is no information about Zhang San in the database, but we still continue to enter the user name "Zhang San", click the query button, and the result will appear. Because there is no record of the user "Zhang San" in the central server, after clicking the query button, it will prompt "there is no record about 'Zhang San' in the database".

The ECG signal collected by the ECG acquisition module is sent to the smartphone based on the Android system through the BLK-MD-BC04-B Bluetooth module, and then dynamically drawn on the screen of the mobile phone. In addition, the ECG data obtained from the central server will also be displayed as Draw on the phone screen in the same way. The mobile phone displays basic information, which includes name, gender, age, and physical condition. Click the "ECG" button to start drawing the ECG waveform. So far, the entire display process has been fully realized.

The automatic recognition of the characteristic parameters of the ECG signal can free the medical staff from the cumbersome pattern recognition and greatly improve the work efficiency. Commonly used methods for automatic diagnosis of ECG signals include: signal processing technology of wavelet analysis and local transformation algorithm. Compared with the two algorithms, local transformation algorithm has the advantages of fast and simple calculation, and can reach the accuracy of wavelet transformation analysis. After calculation, the main characteristic parameter values of the ECG signal can be obtained.

Open the remote consultation function, which includes two options, one is a simple chat tool, and the other is an email transmission service, both of which use wireless communication technology. When the doctor is online, you can chat with the doctor in real time, and when the doctor is not online, you can send the ECG data by email.

The emergency call window only needs to be set in two parts, one is the phone number of the emergency contact, and the other is the email address of the consulting doctor in the consultation function. When the patient's heartbeat is abnormal and there is no one around to help in time, the family can be dialed by pressing the dial button, and the family will take rescue measures in time.

Claims (2)

1., based on an electrocardio early warning system for smart mobile phone, it is characterized in that this system comprises following a few part:

1) acquisition module:

Acquisition module is become with YD30 groups of acceleration sensors by ADS1294 chip; ADS1294 chip contains all characteristics that all medical electrocardiosignal application require usually; YD30 acceleration transducer can measure from direct current to the highest 2.5kHz ± 1g ~ ± 18g within acceleration; Be transferred to microprocessor by SPI interface after acquisition module collects electrocardiosignal and acceleration signal to process; Microprocessor adopts the MSP430F149 chip released by TI company, after having processed by UART Serial Port Transmission to bluetooth module;

2) electrocardiosignal Bluetooth communication modules:

Bluetooth communication modules adopts BLK-MD-BC04-B module to transmit, after receiving the next electrocardiogram (ECG) data of UART Serial Port Transmission, set up Bluetooth pairing with the smart mobile phone based on android system be in together in a LAN (Local Area Network), after completing pairing and being connected, then transmit electrocardiogram (ECG) data;

3) electrocardiosignal display inventory analysis and warning module:

Based on the smart mobile phone of android system after receiving electrocardiogram (ECG) data, realize the Dynamic Announce of electrocardiosignal on mobile phone, store and analysis; When user's electrocardiogram (ECG) data substantial deviation is in normal index, mobile phone terminal will jump out window, and prompting user electrocardiogram (ECG) data is abnormal;

4) central server module:

Preserve the essential information of user and passing electrocardiogram (ECG) data on that server, read these information and data and turn back on mobile phone show by can access this server based on the smart mobile phone of android system;

5) telereference and SOS module:

For improving usability and the security of native system, add telereference function and SOS functional module, click the phone that dialing button just can put through household, household takes emergency measures in time simultaneously.

2. the electrocardio signal transmission method based on the electrocardio early warning system of smart mobile phone as claimed in claim 1, it is characterized in that, be transferred to microprocessor by SPI interface after acquisition module collects electrocardiosignal and acceleration signal to process, after having processed by UART Serial Port Transmission in electrocardio equipment bluetooth module; After bluetooth module receives data, start to match with Android phone, after completing pairing and being connected, electrocardiogram (ECG) data will be transmitted to mobile phone; After electrocardiosignal display inventory analysis on mobile phone and warning module receive data, realize the Dynamic Announce of electrocardiosignal on mobile phone, store and analyze; Next, handset-selectedly by 3G or WIFI, electrocardiogram (ECG) data is uploaded to central server, the request of the inquiry of central server processes user data or data manipulation, mobile phone, by access central server, obtains the history electrocardiogram (ECG) data of user; The telereference of mobile phone terminal and SOS module permission user undertaken by server and online doctor mutual while, also add an individual emergency dialing button, complete SOS function.