WO2024093723A1 - Smartwatch and physiological data measurement method - Google Patents

Abstract

Provided are a smartwatch and a physiological data measurement method. The smartwatch comprises: a physiological sound signal acquisition module, configured to acquire a physiological sound signal; an electrocardiosignal acquisition module, configured to acquire an electrocardiosignal; a pulse signal acquisition module, configured to acquire a pulse signal; and a control chip, configured to determine physiological data such as blood pressure data and cardiopulmonary diseases of a smartwatch terminal user according to the physiological sound signal, the electrocardiosignal, and the pulse signal. The physiological data of the smartwatch terminal user can be comprehensively and accurately measured, so as to that accurately monitor the user's health data.

Description

Smart watches and physiological data measurement methods

This application claims priority to the Chinese patent application filed with the Chinese Patent Office on October 31, 2022, with application number 202211351571.0 and invention name “Smart watch and blood pressure measurement method” and the Chinese patent application filed with the Chinese Patent Office on July 11, 2023, with application number 202310847358.7 and invention name “Smart watch and physiological data measurement method”, the entire contents of which are incorporated by reference in this application.

Technical Field

The present invention relates to the field of artificial intelligence technology, and in particular to a smart watch and a physiological data measuring method.

Background technique

In recent years, portable smart devices that can measure users' physiological data (such as blood pressure) have emerged.

However, current portable smart devices are generally only able to measure a certain type of physiological data, for example, existing portable blood pressure measurement devices can measure the blood pressure data of the user at the device end. Moreover, the data accuracy of the user's physiological data measured by this type of portable smart device is not high.

For example, the above-mentioned portable blood pressure measurement devices are generally divided into two categories: one is to measure blood pressure through PPG (photoplethysmographic) combined with ECG (electrocardiogram) or using PPG method alone. This method requires regular calibration of the equipment and has low accuracy, and can only be used for individual blood pressure trend measurement research.

Summary of the invention

The main purpose of the present invention is to provide a smart watch and a physiological data measurement method, aiming to comprehensively and accurately measure the physiological data of the smart watch user, and then accurately monitor the user's health data.

To achieve the above object, the present invention provides a physiological data measurement method, the method comprising the following steps:

A physiological sound signal acquisition module is used to collect heart sound signals;

An ECG signal acquisition module, used for acquiring ECG signals;

A pulse signal acquisition module, used for acquiring pulse signals;

A control chip is used for, according to the physiological sound signal, the electrocardiogram signal and/or the pulse signal, Determine physiological data of the user of the smart watch, wherein the physiological data includes one or more of blood pressure data and cardiopulmonary diseases.

Optionally, the physiological sound signal acquisition module includes at least one or more of a bone conduction sensor, an acceleration sensor, an inertial sensor, a piezoelectric ceramic, a pressure sensor, and a vibration detection sensor; the ECG signal acquisition module includes at least two ECG electrodes, and the pulse signal acquisition module includes an LED light source and a detector.

Optionally, the physiological sound collection module can be installed on the smart watch body and/or the smart watch strap.

Optionally, the ECG electrode includes at least a first electrode and a second electrode, wherein the first electrode is mounted on the bottom shell of the smart watch body, and the second electrode is mounted on the top shell or side wall of the smart watch body.

Optionally, the ECG electrode further includes a third electrode, and the third electrode is mounted on the bottom shell of the smart watch body.

Optionally, the LED light source and the detector are installed on the bottom shell of the smart watch body.

Optionally, the smart watch further includes:

A physiological sound signal analysis module, used for analyzing and processing the physiological sound signals collected by the physiological sound signal collection module, and sending the analyzed and processed physiological sound signals to the control chip;

An ECG signal analysis module, used for analyzing and processing the ECG signals collected by the ECG signal collection module, and sending the analyzed and processed ECG signals to the control chip;

The pulse signal analysis module is used to analyze and process the pulse signal collected by the pulse signal collection module, and send the analyzed and processed pulse signal to the control chip.

Optionally, the smart watch also includes: a voice module and/or a display module and/or a vibration module, wherein the voice module, the display module and the vibration module are used to remind the smart watch user to wear the smart watch on his wrist so that the ECG electrodes in the ECG signal acquisition module are in close contact with the wrist of the smart watch user, and prompt the smart watch user to keep the smart watch close to the chest position while using the other hand that is not wearing the smart watch to lightly touch the ECG electrodes in the ECG signal acquisition module located on the top or side wall of the watch body.

Optionally, the control chip is also used to determine whether the signal quality of the physiological sound signal, the electrocardiogram signal and the pulse signal is greater than the corresponding preset quality threshold, so as to determine the physiological data of the user of the smart watch when the quality of each signal is greater than the corresponding preset quality threshold.

Optionally, to achieve the above object, the present invention further provides a physiological data measurement method, comprising:

Collecting the physiological sound signal, electrocardiogram signal and pulse signal of the user of the smart watch through the physiological sound signal collection module, electrocardiogram signal collection module and pulse signal collection module in the smart watch respectively;

The control chip in the smart watch determines the physiological data of the user of the smart watch according to the physiological sound signal, the electrocardiogram signal and/or the pulse signal, wherein the physiological data includes one or more of blood pressure data and cardiopulmonary diseases.

Optionally, when the physiological sound signal includes a heart sound signal, the step of determining the physiological data of the user of the smart watch according to the physiological sound signal, the electrocardiogram signal and/or the pulse signal includes:

The blood pressure data of the user on the smart watch is determined by the control chip in the smart watch according to the heart sound signal, the electrocardiogram signal and the pulse signal.

Optionally, before the step of determining the blood pressure data of the user on the smart watch according to the heart sound signal, the electrocardiogram signal and the pulse signal, the step further includes:

respectively determining whether the signal qualities of the heart sound signal, the electrocardiogram signal, and the pulse signal are greater than corresponding preset quality thresholds;

If so, the step of determining the blood pressure data of the user on the smart watch according to the heart sound signal, the electrocardiogram signal and the pulse signal is performed.

Optionally, when the physiological sound signal includes a heart sound/lung sound signal, the step of determining the physiological data of the user of the smart watch according to the physiological sound signal by the control chip in the smart watch includes:

The cardiopulmonary disease data of the user of the smart watch is determined by the control chip in the smart watch according to the heart sound/lung sound signal, wherein the cardiopulmonary disease data includes one or more of heart failure, coronary heart disease, valvular disease, pneumonia, and moist rales.

To achieve the above-mentioned purpose, the present invention also provides a terminal device, which includes a memory, a processor, and a blood pressure measurement program stored in the memory and executable on the processor, and the blood pressure measurement program, when executed by the processor, implements the steps of the physiological data measurement method as described above.

In addition, to achieve the above-mentioned purpose, the present invention also proposes a computer-readable storage medium, on which a blood pressure measurement program is stored. When the blood pressure measurement program is executed by a processor, the steps of the physiological data measurement method as described above are implemented.

To achieve the above object, the present invention further provides a computer program product, which includes a computer program. When the computer program is executed by a processor, the steps of the physiological data measurement method described above are implemented.

The present invention provides a smart watch, a physiological data measurement method, a terminal device, a computer-readable storage medium and a computer program product. The smart watch comprises: a physiological sound signal acquisition module for acquiring physiological sound signals; an electrocardiogram signal acquisition module for acquiring electrocardiogram signals; a pulse signal acquisition module for acquiring pulse signals; and a control chip for determining the physiological data of the user of the smart watch according to the physiological sound signal, the electrocardiogram signal and/or the pulse signal, wherein the physiological data comprises one or more of blood pressure data and cardiopulmonary diseases.

Compared with the physiological data measurement method in the prior art, the smart watch in the present invention has a small structure size, and the measurement method is simple and easy to master. In addition, in the present invention, the physiological sound signal, electrocardiogram signal and pulse signal of the user on the smart watch are collected simultaneously through the physiological sound signal acquisition module, electrocardiogram signal acquisition module and pulse signal acquisition module in the smart watch, and then the blood pressure data, cardiopulmonary disease and other physiological data of the user on the smart watch are calculated through the control chip in the smart watch by using the above-mentioned physiological sound signal, electrocardiogram signal and pulse signal. Therefore, the smart watch in the present invention integrates a variety of health data detection functions such as blood pressure measurement and cardiopulmonary disease detection, and realizes comprehensive and accurate detection of the physiological data of the user on the smart watch. In addition, the physiological sound measurement method in the present invention is simple and convenient to operate, which improves the user's experience when measuring physiological data.

On this basis, the present invention avoids squeezing the user's wrist when measuring blood pressure with a digital cuff sphygmomanometer, and also solves the problem of inaccurate blood pressure values caused by the existing blood pressure measurement method using PPG combined with ECG. The present invention improves the accuracy of blood pressure data measurement by measuring blood pressure using physiological sound signals, electrocardiogram signals and pulse signals, and realizes accurate and efficient measurement of physiological data such as blood pressure.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a first schematic diagram of an internal module of a smart watch according to an embodiment of the present invention;

FIG2 is a second schematic diagram of an internal module of a smart watch according to an embodiment of the present invention;

FIG3-1 is a first schematic diagram of wearing a smart watch according to an embodiment of the present invention;

FIG3-2 is a second schematic diagram of wearing a smart watch according to an embodiment of the present invention;

FIG4 is a schematic diagram of a first flow chart of an embodiment of a physiological data measurement method of the present invention;

FIG. 5 is a schematic diagram of a second flow chart of an embodiment of a physiological data measurement method of the present invention.

FIG6 is a schematic diagram of a third flow chart of an embodiment of a physiological data measurement method of the present invention;

The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings.

Detailed ways

It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

Taking into account the problem that the existing portable smart devices measure physiological data types that are too single and lack accuracy, in this embodiment, a physiological data measurement method is proposed. In one embodiment, the method is applicable to various wearable devices, including but not limited to smart watches, smart bracelets, etc.

In this embodiment, a smart watch is provided, the smart watch comprising:

A physiological sound signal acquisition module, used for acquiring physiological sound signals;

An ECG signal acquisition module, used for acquiring ECG signals;

A pulse signal acquisition module, used for acquiring pulse signals;

The control chip is used to determine the physiological data of the user of the smart watch according to the physiological sound signal, the electrocardiogram signal and/or the pulse signal, wherein the physiological data includes one or more of blood pressure data and cardiopulmonary diseases.

It can be understood that the smart watch is a wristband device, which can be specifically divided into two parts: a watch body and a watch strap. In this embodiment, in order to be able to measure more accurate blood pressure data of the smart watch user, the above-mentioned physiological sound signal acquisition module, electrocardiogram signal acquisition module, pulse signal acquisition module and control chip can be integrated into the smart watch body and/or watch strap. In this embodiment, the integration position of the above-mentioned modules and chips in the watch body is not specifically limited.

Specifically, as shown in FIG2 , the body of the smart watch includes: a physiological sound signal acquisition module, an electrocardiogram signal acquisition module, a pulse signal acquisition module and a control chip, wherein the physiological sound signal The signal acquisition module is used to collect the physiological sound signals of the user on the smart watch end, the ECG signal acquisition module is used to collect the ECG signals of the user on the smart watch end, the pulse signal acquisition module is used to collect the pulse signals of the user on the smart watch end, and the control chip is used to calculate the physiological data of the user on the smart watch end based on the collected physiological sound signals, ECG signals and/or pulse signals, wherein each module is connected to the control chip to send the collected signals to the control chip for further processing by the control chip.

Among them, the physiological sound signal in this embodiment may include a heart sound signal/lung sound signal, and the physiological data includes one or more of the blood pressure data of the user on the smart watch and cardiopulmonary diseases.

In one embodiment, the physiological sound signal acquisition module includes at least one or more of a bone conduction sensor, an acceleration sensor, an inertial sensor, a piezoelectric ceramic, a pressure sensor, and a vibration detection sensor; the ECG signal acquisition module includes at least two ECG electrodes, and the pulse signal acquisition module includes an LED light source and a detector.

In order to achieve accurate measurement of the blood pressure of users on the smart watch, in this embodiment, the physiological sound signal acquisition module integrates at least one or more of a bone conduction sensor, an acceleration sensor, an A+G inertial sensor, a piezoelectric ceramic, a pressure sensor (Force sensor), and a vibration detection sensor.

For example, when there are more than two bone conduction sensors, the plurality of bone sensors may be arranged in a sensor array.

In addition, the ECG signal acquisition module includes at least two ECG electrodes, which may be ECG_P and ECG_N, for measuring the ECG signal of the user of the smart watch.

The pulse signal acquisition module includes an LED light source and a detector, wherein the detector can be specifically a PD device (photodiode), wherein the LED light source is used to emit detection light, which can then be received by the PD device after being reflected and absorbed by human blood vessels and tissues.

In one embodiment, the physiological sound collection module can be installed on the smart watch body and/or the smart watch strap.

In this embodiment, the physiological sound collection module can be installed on the body and/or strap of the smart watch. For example, it can be installed on the screen, middle frame, bottom shell, strap, etc. of the smart watch that can effectively collect physiological sound signals.

Specifically, for example, when the physiological sound acquisition module includes multiple sensors (such as at least one bone conduction sensor, an acceleration sensor, an A+G inertial sensor, a piezoelectric ceramic, a pressure sensor, and a vibration detection sensor), the multiple sensors can be installed on the watch body and the watch strap respectively to obtain the physiological data of the smart watch user from multiple dimensions and improve the accurate collection of physiological data.

For another example, when the physiological sound acquisition module includes at least one bone conduction sensor, in order to receive higher quality heart sound signals, at least one bone conduction sensor can be configured on the bottom shell of the smart watch body, and fit tightly with the bottom shell so that the bone conduction sensor can fit closely to the wearer's wrist. Similarly, when there are multiple bone conduction sensors forming a sensor array, the sensor array also needs to be installed close to the bottom shell.

In one embodiment, the ECG electrode includes at least a first electrode and a second electrode, wherein the first electrode is mounted on the bottom shell of the smart watch body, and the second electrode is mounted on the top shell or side wall of the smart watch body.

The ECG electrode also includes a third electrode, which is mounted on the bottom shell of the smart watch body.

The ECG signal acquisition module of the smart watch includes at least two electrodes, namely, a first electrode ECG_P and a second electrode ECG_N, wherein the first electrode ECG_P is installed on the bottom shell of the smart watch and is close to the bottom shell, and the second electrode ECG_N is installed on the top shell or side wall of the smart watch. Through this electrode installation method, the user of the smart watch can wear the smart watch correctly on the wrist, and after wearing the smart watch, as shown in Figure 3-1, the worn smart watch is placed close to the chest position, and the finger of the other hand that is not wearing the smart watch is lightly touched to the second electrode ECG_N located on the top shell or side wall of the smart watch body. At this time, the first electrode ECG_P located on the bottom shell of the smart watch body can be close to the user's wrist to form a circuit path, thereby ensuring the quality of the collected ECG signal to improve the accuracy of the measured blood pressure data. In this process, the user of the smart watch will not feel any discomfort, which greatly improves the user experience.

In addition, a third electrode ECG_RLD can be installed on the bottom shell of the smart watch as a reference electrode, which can be used together with the first electrode ECG_P and the second electrode ECG_N to collect ECG signals of the user on the smart watch.

In one embodiment, the LED light source and the detector are installed on the bottom shell of the smart watch body.

The pulse signal acquisition module in the smart watch includes an LED light source and a PD device. Specifically, there is a transparent cover on the bottom shell of the smart watch body, under which are arranged an LED light source (including red light, infrared light and green light, etc.) and a PD device (i.e., a detector) for collecting incident light (attenuated light emitted by the LED light and reflected and absorbed by human blood vessels and tissues, etc.). The above-mentioned LED light and PD device are used together to measure the pulse signal of the smart watch.

In one embodiment, the smart watch further includes:

A physiological sound signal analysis module, used for analyzing and processing the physiological sound signals collected by the physiological sound signal collection module, and sending the analyzed and processed physiological sound signals to the control chip;

An ECG signal analysis module, used for analyzing and processing the ECG signals collected by the ECG signal collection module, and sending the analyzed and processed ECG signals to the control chip;

The pulse signal analysis module analyzes and processes the pulse signal collected by the pulse signal collection module, and sends the analyzed and processed pulse signal to the control chip.

As shown in FIG2 , in order to analyze the physiological sound signals, ECG signals and pulse signals collected by the above-mentioned acquisition module, a physiological sound signal analysis module, an ECG signal analysis module and a pulse signal analysis module are also integrated in the smart watch.

Specifically, for example, after the smart watch collects the physiological sound signals, electrocardiogram signals and pulse signals of the user on the smart watch end, the smart watch will send the above-mentioned physiological sound signals to the physiological sound signal analysis module in the smart watch through the control chip, and send the electrocardiogram signals to the electrocardiogram signal collection module in the smart watch, and send the pulse signals to the pulse signal analysis module in the smart watch. The physiological sound signal analysis module, the electrocardiogram signal analysis module and the pulse signal analysis module will analyze and process the collected signals respectively, and return the analyzed and processed signals to the control chip, which will calculate the analyzed and processed signals to obtain the physiological data of the user on the smart watch end.

In one embodiment, the smart watch further includes:

A voice module and/or a display module and/or a vibration module, wherein the voice module, the display module and the vibration module are used to remind the user of the smart watch to wear the smart watch on the wrist so that the ECG electrodes in the ECG signal acquisition module are in close contact with the wrist of the user of the smart watch, and to remind the user of the smart watch to keep the smart watch in close contact with the chest while using the other hand that is not wearing the smart watch to lightly touch the ECG electrodes located on the top or side wall of the ECG signal acquisition module.

As shown in Figure 2, in addition to the above-mentioned signal acquisition module and the corresponding signal analysis module, at least one of the following functional modules is also integrated in this embodiment: a display module, a vibration module and a voice module, wherein the display module can specifically be a display touch screen on a smart watch, which is used to display corresponding text and pictures or videos to the user of the smart watch; the voice module may include a microphone and a speaker, etc., and the vibration module may be composed of a vibration motor to drive the vibration of the smart watch.

It can be understood that, in this embodiment, the electrode in the ECG signal acquisition module located on the bottom shell of the smart watch and close to the wrist of the user of the smart watch can be the first electrode, or the first electrode and the third electrode. The pole does not affect the measurement of the ECG signal of the user on the smart watch end, and is not specifically limited in this embodiment.

Specifically, as shown in FIG3-1, in order to improve the accuracy of the measured physiological data and ensure the quality of the measured physiological data, the smart watch can detect in real time whether it is currently in the physiological data measurement function state. Once the smart watch detects that it is currently in the physiological data measurement function state, in order to be able to measure high-quality physiological sound signals, ECG signals and pulse signals, the smart watch will remind the user of the smart watch to wear the smart watch correctly on the wrist through one or more of the above-mentioned voice module, display module and vibration module, so that the first electrode (or the first electrode and the third electrode) in the ECG signal acquisition module is close to the wrist of the user of the smart watch, and prompt the user of the smart watch to put the smart watch close to the chest position, and use the other hand that is not wearing the smart watch to touch the second electrode on the top or side wall of the ECG signal acquisition module.

In another embodiment, as shown in FIG3-2 , the user can also perform health measurement by lifting the wrist and placing it close to the chest while wearing the watch normally on the wrist, without having to take off the smart watch device and place it close to the chest for health measurement.

Therefore, the various physiological data measurement methods of the smart watch in this embodiment can improve the convenience of user measurement and usage experience.

In one embodiment, the control chip is also used to determine whether the signal quality of the physiological sound signal, the electrocardiogram signal and the pulse signal is greater than the corresponding preset quality threshold, so as to determine the physiological data of the user of the smart watch when the quality of each signal is greater than the corresponding preset quality threshold.

In this embodiment, before the control chip processes the physiological sound signals, electrocardiogram signals and pulse signals collected by each acquisition module to obtain the blood pressure data, in order to avoid collecting invalid signals, which will cause the measured physiological data to be unable to accurately reflect the user's health status, the control chip also needs to pre-judge whether the signal quality of the collected physiological sound signals, electrocardiogram signals and pulse signals meets the corresponding preset quality thresholds. Only when it is determined that the quality of each signal is greater than its corresponding preset quality threshold can the blood pressure data of the user on the smart watch be calculated. Among them, each signal has its corresponding preset quality threshold. In this embodiment, the preset quality threshold is not specifically limited and can be flexibly adjusted according to the actual scenario.

In addition, the smart watch also integrates a wireless communication module (including one or more combinations of wireless communications such as cellular communication, WiFi communication, Bluetooth communication, etc.). When the smart watch is working, it can Establishing communication connections with other devices, such as mobile devices, for transmitting the collected data to mobile device users), memory, battery, power management module, motion sensing module (including accelerometer and gyroscope, etc.).

Compared with the blood pressure measurement method using a traditional digital cuff sphygmomanometer or PPG combined with ECG in the prior art, the smart watch in the present invention has a small structure and size, and the measurement method is simple and easy to master. In the present invention, the physiological sound signal acquisition module, the electrocardiogram signal acquisition module and the pulse signal acquisition module in the smart watch simultaneously collect the physiological sound signal, electrocardiogram signal and pulse signal of the user on the smart watch, and then use the above-mentioned physiological sound signal, electrocardiogram signal and pulse signal to calculate the blood pressure data, cardiopulmonary disease and other physiological data of the user on the smart watch through the control chip in the smart watch. Therefore, the smart watch in the present invention integrates a variety of health data detection functions such as blood pressure measurement and cardiopulmonary disease detection, and realizes comprehensive and accurate detection of the physiological data of the user on the smart watch. In addition, the physiological sound measurement method in the present invention is simple and convenient to operate, which improves the user's experience when measuring physiological data.

On this basis, the present invention avoids squeezing the user's wrist when measuring blood pressure with a digital cuff sphygmomanometer, and also solves the problem of inaccurate blood pressure values caused by measuring blood pressure using a PPG combined with an ECG blood pressure measurement method. The present invention also improves the accuracy of blood pressure data measurement by measuring blood pressure using physiological sound signals, electrocardiogram signals, and pulse signals, and achieves accurate and efficient blood pressure measurement.

Based on the hardware structure of the smart watch mentioned above, a physiological data measurement method applied to the smart watch is proposed. The present invention provides an embodiment of the physiological data measurement method. It should be noted that although the logical order is shown in the flow chart, in some cases, the steps shown or described may be executed in a different order than here.

The physiological data measurement method in this embodiment, as shown in FIG4 , specifically includes the following steps:

Step S10, collecting physiological sound signals, electrocardiogram signals and pulse signals of the user on the smart watch through the physiological sound signal collection module, electrocardiogram signal collection module and pulse signal collection module in the smart watch respectively;

After the user wears the smart watch correctly, the smart watch will collect the physiological sound signal, ECG signal and pulse signal of the user on the smart watch through the physiological sound signal collection module, ECG signal collection module and pulse signal collection module, and further send the collected physiological sound signal, ECG signal and pulse signal to the corresponding physiological sound signal analysis module, ECG signal analysis module and pulse signal analysis module for analysis and processing, and then send them to the control chip integrated in the smart watch for physiological data calculation. Calculate.

It should be noted that, in this embodiment, in order to ensure that the smart watch can measure more accurate blood pressure values, the user needs to wear the smart watch correctly. For example, as shown in Figure 3, the correct smart arm wearing posture is as follows: the user can wear the smart watch on the wrist (with appropriate tightness so that the body of the smart watch can fit closely to the wearer's wrist), and then, when measuring blood pressure, the smart watch on the wrist is placed close to the chest, and the other finger that is not wearing the smart watch is lightly pressed on the ECG electrode on the top shell or side of the smart watch, so that the ECG electrode on the bottom shell of the smart watch close to the wearer's arm and the ECG electrode on the top shell or side close to the wearing finger form a single lead structure for measuring the wearer's electrocardiogram signal (i.e., electrocardiogram wave).

Step S20, determining the physiological data of the user of the smart watch according to the physiological sound signal, the electrocardiogram signal and/or the pulse signal through the control chip in the smart watch, wherein the physiological data includes one or more of blood pressure data and cardiopulmonary diseases.

After collecting the physiological sound signals, electrocardiogram signals and pulse signals of the user on the smart watch end, the smart watch sends the above-mentioned heart sound signals to the physiological sound signal analysis module, electrocardiogram signal analysis module and pulse signal analysis module in the smart watch. The physiological sound signal analysis module, the electrocardiogram signal analysis module and the pulse signal analysis module respectively analyze and process the collected signals, and send the analyzed and processed signals to the control chip, which calculates the analyzed and processed signals to obtain corresponding physiological data.

Specifically, for example, when the physiological data in this embodiment is blood pressure data, the control chip can calculate the pulse transmission time and heart rate value based on the above-mentioned physiological sound signal (the physiological sound signal at this time is the heart sound signal), electrocardiogram signal and pulse signal, and combine the blood pressure calculation regression model to finally obtain the blood pressure data of the user on the smart watch, such as BP (blood pressure), thereby diagnosing the user's physical health status based on the BP value.

Furthermore, when the physiological sound signal includes a heart sound signal, and the physiological data includes blood pressure data, the above step S20, "determining the physiological data of the user of the smart watch according to the physiological sound signal, the electrocardiogram signal and the pulse signal through the control chip in the smart watch", may include:

Step S201, determining the blood pressure data of the user of the smart watch through the control chip in the smart watch according to the heart sound signal, the electrocardiogram signal and the pulse signal.

In this embodiment, when the physiological sound signal includes a heart sound signal and the corresponding physiological data is blood pressure data, the control chip can calculate the heart sound signal, the electrocardiogram signal and the pulse signal according to the heart sound signal. Get the blood pressure data of the user on the smart watch.

Specifically, after the smart watch obtains the heart sound signal, the electrocardiogram signal and the pulse signal, in order to further calculate the blood pressure of the user on the smart watch end, it is necessary to pre-evaluate whether each signal meets the preset blood pressure measurement standard. The preset blood pressure measurement standard in this embodiment can be specifically: the signal characteristics of each signal have synchronization (that is, whether the change law between the signals has a linear relationship). For example, the R wave of the electrocardiogram signal corresponding to the same heart beat of the user on the smart watch end should appear first, followed by the heart sound signal, and finally the pulse signal. If the collected heart sound signal, electrocardiogram signal and pulse signal are not in this order, or the delay between the three signals is significantly greater than the preset normal value (individual abnormalities are taken into account in the preset normal value), the three signals collected at this time cannot be used for blood pressure calculation and can be discarded. Furthermore, when it is determined that each signal characteristic meets the preset blood pressure measurement standard, the blood pressure of the user on the smart watch end will be calculated based on the obtained heart sound signal, electrocardiogram signal and pulse signal.

In one embodiment, the specific method for determining whether each signal feature reaches the preset blood pressure measurement standard may be: after the smart watch obtains the heart sound signal, the electrocardiogram signal and the pulse signal, the smart watch extracts the signal features corresponding to the heart sound signal, the electrocardiogram signal and the pulse signal respectively, and then obtains the coherence coefficient between each signal feature, and determines whether each signal feature is synchronized based on the correlation coefficient, so as to achieve the purpose of determining whether each of the signal features reaches the preset blood pressure measurement standard.

In another embodiment, as shown in FIG5 , if the smart watch detects that at least one of the signal characteristics of the heart sound signal, the signal characteristics of the electrocardiogram signal, and the signal characteristics of the pulse signal does not meet the above-mentioned preset blood pressure measurement standard, it means that there is an invalid signal. In order to avoid using invalid signals to calculate blood pressure, resulting in a large error in the blood pressure measurement value, the smart watch needs to further obtain whether the current blood pressure measurement duration exceeds the preset measurement duration. The current blood pressure measurement duration here refers to the duration of the smart watch currently in the blood pressure measurement function state, and the preset measurement duration refers to the duration generally required by most users to use the smart watch for blood pressure measurement. This embodiment does not specifically limit the preset measurement duration. Furthermore, when the smart watch detects that the current blood pressure measurement duration exceeds the preset measurement duration, in order to improve the blood pressure measurement efficiency, the blood pressure measurement operation will be directly terminated. On this basis, the user of the smart watch end can be further reminded that the blood pressure measurement operation has failed, and the next blood pressure measurement operation can be performed in time. If it is detected that the current blood pressure measurement duration does not exceed the preset measurement duration, the heart sound signal can be collected again through the physiological sound signal acquisition module, and the electrocardiogram signal and pulse signal can be collected through the PPG+ECG signal acquisition module to calculate the user's blood pressure again. It can be seen that in this embodiment, when an invalid signal is collected, it can be determined whether to end the blood pressure measurement operation according to the current blood pressure measurement duration. It continues to re-collect signals, eliminating the interference of invalid signals on blood pressure calculation, greatly improving the efficiency and accuracy of blood pressure measurement. On this basis, it provides reliable data for subsequent user health status monitoring.

Furthermore, before the above step S201, "determining the blood pressure data of the user on the smart watch according to the heart sound signal, the electrocardiogram signal and the pulse signal", it also includes:

Step S202, determining whether the signal qualities of the heart sound signal, the electrocardiogram signal, and the pulse signal meet corresponding preset quality thresholds respectively;

Step S203: If yes, then determine the blood pressure data of the user on the smart watch according to the heart sound signal, the electrocardiogram signal and the pulse signal.

After the smart watch collects the heart sound signals, electrocardiogram signals and pulse signals of the user on the smart watch end, before processing the above signals to obtain blood pressure data, in order to avoid collecting invalid signals, which causes the measured blood pressure to be unable to accurately reflect the user's health status, as shown in Figure 5, the smart watch needs to pre-determine whether the signal quality of the collected heart sound signals, electrocardiogram signals and pulse signals meets the corresponding preset quality thresholds, where each signal has its corresponding preset quality threshold. In this embodiment, the preset quality threshold is not specifically limited and can be flexibly adjusted according to the actual scenario.

Furthermore, if the smart watch determines that the signal quality of the collected heart sound signals, electrocardiogram signals and pulse signals are all greater than the corresponding preset quality thresholds, it can calculate blood pressure based on the heart sound signals, electrocardiogram signals and pulse signals.

Furthermore, when the physiological sound signal includes a heart sound/lung sound signal, the above step S20 may further include:

Step S204, determining the cardiopulmonary disease data of the user of the smart watch according to the heart sound/lung sound signal through the control chip in the smart watch, wherein the cardiopulmonary disease data includes: one or more of heart failure, coronary heart disease, valvular disease, pneumonia, and moist rales.

It is understandable that for cardiopulmonary diseases associated with wet rales, the airflow through the bronchi with thin secretions causes fluid vibration or bubble rupture. It is characterized by being intermittent and short-lived, and is more common in the inspiratory phase. It is specifically divided into coarse wet rales, moderate wet rales, fine wet rales (also known as large, medium, and small bubble sounds), and crepitus. And it is mainly seen in bronchial lesions (chronic obstructive pulmonary disease, bronchiectasis), infectious or non-infectious lung inflammation, pulmonary edema, and alveolar hemorrhage. Different types of wet rales indicate that the main location of thin secretions is different. For example, fine wet rales are often seen in pneumonia, and coarse, medium, and fine wet rales may appear at the same time in acute pulmonary edema.

Heart failure is divided into left heart failure, right heart failure and total heart failure. When the left heart fails, cardiac auscultation generally shows, in addition to the inherent signs of the patient's inherent heart disease, heart enlargement and regurgitation murmurs that lead to relative mitral regurgitation, hyperactive second heart sound in the pulmonary valve area, and gallop rhythm of the third or fourth heart sound. When the right heart fails, cardiac auscultation can detect significant enlargement of the right ventricle and the regurgitation murmur of tricuspid regurgitation. For patients with total heart failure, since both the left and right hearts are enlarged, regurgitation murmurs of relative mitral and tricuspid regurgitation may occur. For physical examination of heart failure, there may generally be no special clinical manifestations, and cardiac auscultation is only an auxiliary reference.

According to the characteristics of cardiopulmonary diseases described above, in this embodiment, the heart sounds/lung sounds collected by the physiological sound collection module can be used to detect cardiopulmonary diseases of the user on the smart watch, wherein the physiological sound collection module in this embodiment can be a heart sound/lung sound collection module.

It should be noted that, in this embodiment, according to the above description, the heart sound/lung sound acquisition module includes at least one bone conduction sensor, acceleration sensor, A+G inertial sensor, piezoelectric ceramic, Force sensor (pressure sensor), or vibration detection sensor, etc. This module is fixed on the smart watch, such as the body or strap of the smart watch. This embodiment does not specifically limit the position of the sensor, and can effectively collect heart sound and lung sound signals.

On this basis, the heart sound/lung sound acquisition module collects the heart beat signal and/or lung breathing signal of the smart watch user and converts the signal into an electrical signal. After acquiring the electrical signal, the control chip will calculate the cardiopulmonary disease data of the smart watch user based on the electrical signal.

In another embodiment, the control chip can save the above-mentioned cardiopulmonary disease data in the storage module of the smart watch. At the same time, the cardiopulmonary disease data can be transmitted to a mobile phone APP or a cloud data center connected to the smart watch through the wireless transmission module in the smart watch, so that professional doctors can obtain the heart sounds/lung sounds collected by the smart watch through the data saved in the mobile phone APP or the cloud data center, and make diagnoses and recommendations related to cardiopulmonary diseases based on the collection location of the heart sounds/lung sounds.

In one embodiment, after the above step S10, "collecting the heart sound signal, electrocardiogram signal and pulse signal of the user of the smart watch through the physiological sound signal collection module, electrocardiogram signal collection module and pulse signal collection module in the smart watch respectively", the following may also be included:

When the smart watch fails to collect the heart sound signal, determining whether the current heart sound signal collection time exceeds a preset heart sound collection time;

If the current heart sound signal collection time exceeds the preset heart sound collection time, a wearing posture adjustment instruction for the smart watch is triggered, and the wearing posture adjustment instruction is used to remind the smart watch. The user of the smart watch adjusts the wearing position of the smart watch and/or the heart sound signal collection position.

It should be noted that in this embodiment, as shown in FIG6 , considering that when the user wears a smart watch to measure blood pressure, the smart watch needs to be placed close to the chest, so it is easy for the user to not place the smart watch in the correct position to collect heart sound signals or the body of the smart watch is not close to the user's wrist. In order to avoid the large blood pressure measurement error caused by the above problems, the smart watch needs to determine whether the heart sound signal is collected. It is worth noting that if the smart watch can collect heart sound signals, it means that the smart watch is worn correctly and the user operates correctly, and at this time it is more likely to collect electrocardiogram signals and pulse signals.

Specifically, for example, when the smart watch fails to collect heart sound signals, it is necessary to further determine whether the current heart sound signal collection duration exceeds the preset heart sound collection duration, wherein the current heart sound signal collection duration refers to the duration that the smart watch is currently in the heart sound collection state, and the preset heart sound collection duration refers to the duration generally required for the smart watch to collect heart sound signals. In this embodiment, no specific limitation is made to the preset heart sound collection duration. If it is determined that the current heart sound signal collection duration does not exceed the preset heart sound collection duration, the wearing posture adjustment instruction is triggered through the voice module or display module of the smart watch, reminding the user of the smart watch to adjust the wearing posture of the smart watch and/or the heart sound signal collection position in time.

In another embodiment, if the current heart sound signal collection time of the smart watch exceeds the preset heart sound collection time, in order to remind the blood pressure measurement efficiency, the blood pressure measurement operation will be directly ended, and a blood pressure measurement failure reminder will be triggered. The blood pressure measurement failure reminder includes the reason for the failure, such as failure to collect heart sound signals, etc., to remind the user to correctly perform the next blood pressure measurement operation.

Therefore, in the present invention, the smart watch measures blood pressure and cardiopulmonary diseases based on physiological sound signals, electrocardiogram signals and pulse signals, thereby improving the accuracy of physiological data measurement and achieving accurate and efficient blood pressure measurement and cardiopulmonary disease measurement. In addition, the present invention can trigger a reminder to wear the smart watch, guiding the user to wear the smart watch correctly and measure physiological data with correct operation, thereby ensuring the quality of the measured physiological data, simplifying the physiological measurement operation, and improving the user's experience when measuring blood pressure and cardiopulmonary diseases. In addition, in order to avoid collecting invalid signals, which may cause the measured physiological data to fail to accurately reflect the user's health status, the present invention pre-determines whether the signal quality of the collected physiological sound signals, electrocardiogram signals and pulse signals meets the corresponding preset quality thresholds, thereby greatly improving the quality of the collected signals and thus improving the accuracy of the measured physiological data. In addition, the present invention avoids the use of invalid signals for blood pressure calculations, resulting in large errors in blood pressure measurement values, and after collecting invalid signals, it can determine whether to end the measurement based on the current blood pressure measurement duration. This blood pressure measurement operation still continues to re-collect signals, eliminating the interference of invalid signals on physiological data calculation, greatly improving the efficiency of physiological data measurement, and improving the accuracy of blood pressure and cardiopulmonary disease detection. On this basis, it provides reliable data for subsequent user health status monitoring. At the same time, it solves the problem of large errors in blood pressure and physiological sound measurement caused by users not placing the smart watch in the correct physiological sound signal collection position or the body of the smart watch not being close to the user's wrist.

In addition, an embodiment of the present invention further proposes a computer-readable storage medium, on which a blood pressure measurement program is stored. When the blood pressure measurement program is executed by a processor, the steps of the physiological data measurement method described below are implemented.

The various embodiments of the blood pressure measurement device and the computer-readable storage medium of the present invention may refer to the various embodiments of the physiological data measurement method of the present invention, which will not be described in detail here.

It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, a disk, or an optical disk), and includes a number of instructions for a terminal device (which can be a wearable device, a locator, a smart phone and a tablet computer, a server or other network device, etc.) to execute the methods described in each embodiment of the present invention.

The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims (13)

1. A smart watch, characterized in that the smart watch comprises:

   A physiological sound signal acquisition module, used for acquiring physiological sound signals;

   An ECG signal acquisition module, used for acquiring ECG signals;

   A pulse signal acquisition module, used for acquiring pulse signals;

   The control chip is used to determine the physiological data of the user of the smart watch according to the physiological sound signal, the electrocardiogram signal and/or the pulse signal, wherein the physiological data includes one or more of blood pressure data and cardiopulmonary diseases.
2. The smart watch as described in claim 1 is characterized in that the physiological sound signal acquisition module includes at least one or more of a bone conduction sensor, an acceleration sensor, an inertial sensor, a piezoelectric ceramic, a pressure sensor, and a vibration detection sensor; the ECG signal acquisition module includes at least two ECG electrodes, and the pulse signal acquisition module includes an LED light source and a detector.
3. The smart watch as described in claim 2 is characterized in that the physiological sound collection module can be installed on the smart watch body and/or the smart watch strap.
4. The smart watch as described in claim 2 is characterized in that the ECG electrode includes at least a first electrode and a second electrode, wherein the first electrode is installed on the bottom shell of the smart watch body, and the second electrode is installed on the top shell or side wall of the smart watch body.
5. The smart watch as described in claim 4 is characterized in that the ECG electrode also includes a third electrode, and the third electrode is installed on the bottom shell of the smart watch body.
6. The smart watch as described in claim 2 is characterized in that the LED light source and the detector are installed on the bottom shell of the smart watch body.
7. The smart watch according to claim 1, characterized in that the smart watch further comprises:

   A physiological sound signal analysis module, used for analyzing and processing the physiological sound signals collected by the physiological sound signal collection module, and sending the analyzed and processed physiological sound signals to the control chip;

   An ECG signal analysis module, used for analyzing and processing the ECG signals collected by the ECG signal collection module, and sending the analyzed and processed ECG signals to the control chip;

   The pulse signal analysis module is used to analyze and process the pulse signal collected by the pulse signal collection module, and send the analyzed and processed pulse signal to the control chip.
8. The smart watch as described in claim 1 is characterized in that the smart watch also includes: a voice module and/or a display module and/or a vibration module, and the voice module, the display module and the vibration module are used to remind the smart watch end user to wear the smart watch on the wrist, so that the ECG electrode located on the bottom shell of the smart watch in the ECG signal acquisition module is close to the wrist of the smart watch end user, and the smart watch end user is prompted to keep the smart watch worn close to the chest position, and use the other hand that is not wearing the smart watch to lightly touch the ECG electrode located on the top or side wall of the smart watch body in the ECG signal acquisition module.
9. The smart watch as described in claim 1 is characterized in that the control chip is also used to determine whether the signal quality of the physiological sound signal, the electrocardiogram signal and the pulse signal is greater than the corresponding preset quality threshold, so as to determine the physiological data of the user of the smart watch when the quality of each signal is greater than the corresponding preset quality threshold.
10. A physiological data measurement method, characterized in that the physiological data measurement method is applied to the smart watch according to any one of claims 1 to 9, and the method comprises:

    Collecting the physiological sound signal, electrocardiogram signal and pulse signal of the user of the smart watch through the physiological sound signal collection module, electrocardiogram signal collection module and pulse signal collection module in the smart watch respectively;

    The control chip in the smart watch determines the physiological data of the user of the smart watch according to the physiological sound signal, the electrocardiogram signal and/or the pulse signal, wherein the physiological data includes one or more of blood pressure data and cardiopulmonary diseases.
11. The physiological data measurement method according to claim 10, characterized in that when the physiological sound signal includes a heart sound signal, the step of determining the physiological data of the user on the smart watch end according to the physiological sound signal, the electrocardiogram signal and the pulse signal comprises:

    The blood pressure data of the user on the smart watch is determined by the control chip in the smart watch according to the heart sound signal, the electrocardiogram signal and the pulse signal.
12. The physiological data measurement method according to claim 11, characterized in that before the step of determining the blood pressure data of the user on the smart watch according to the heart sound signal, the electrocardiogram signal and the pulse signal, it also includes:

    respectively determining whether the signal qualities of the heart sound signal, the electrocardiogram signal, and the pulse signal are greater than corresponding preset quality thresholds;

    If so, the step of determining the blood pressure data of the user on the smart watch according to the heart sound signal, the electrocardiogram signal and the pulse signal is performed.
13. The physiological data measurement method according to claim 10, characterized in that when the physiological sound signal includes a heart sound/lung sound signal, the step of determining the physiological data of the user of the smart watch end according to the physiological sound signal through the control chip in the smart watch comprises:

    The cardiopulmonary disease data of the user of the smart watch is determined by the control chip in the smart watch according to the heart sound/lung sound signal, wherein the cardiopulmonary disease data includes one or more of heart failure, coronary heart disease, valvular disease, pneumonia, and moist rales.