Health management system, vital sign monitoring method and refrigeration equipment

Abstract

The invention discloses a health management system, a vital sign monitoring method and refrigeration equipment, and belongs to the technical field of household appliances, the health management system comprises an acquisition module, a control module, a processing module and an interaction module, the acquisition module is used for acquiring photoelectric volume pulse wave signals and sending the photoelectric volume pulse wave signals to the control module; the control module is used for preprocessing the photoelectric volume pulse wave signal and sending the preprocessed photoelectric volume pulse wave signal to the processing module; the processing module is used for determining vital sign data of the user based on the preprocessed photoelectric volume pulse wave signal and sending the vital sign data to the control module; the control module is also used for controlling the interaction module to output vital sign data; the control module determines and outputs the vital sign data of the user according to the collected photoelectric volume pulse wave information, real-time monitoring and analysis of the vital sign data of the user can be achieved, and therefore health abnormity or changes can be found in time.

Description

Technical Field

[0001] This application belongs to the field of household appliance technology, and in particular relates to a health management system, a vital signs monitoring method, and a refrigeration device. Background Technology

[0002] In related technologies, traditional blood pressure monitoring methods are divided into invasive pressure and cuff pressure. Invasive pressure can cause trauma to patients, while cuff pressure requires specialized instruments and is inconvenient to measure. Neither of these two blood pressure monitoring methods can monitor the user's blood pressure in real time and conveniently, and users cannot detect changes in their health in a timely manner. Summary of the Invention

[0003] This application proposes a health management system, a vital signs monitoring method, and a cooling device to address the inconvenience of measurement, the inability to monitor users' blood pressure in real time and conveniently, and the inability of users to promptly detect changes in their health in related technologies.

[0004] In a first aspect, this application provides a health management system, including: a data acquisition module, a control module, a processing module, and an interaction module.

[0005] The acquisition module is used to acquire photoplethysmography (PPG) signals and send the PPG signals to the control module.

[0006] The control module is used to preprocess the photoplethysmography (PPG) signal to obtain a preprocessed PPG signal, and send the preprocessed PPG signal to the processing module.

[0007] The processing module is used to determine the user's vital signs data based on the preprocessed photoplethysmography (PPG) signal, and send the vital signs data to the control module.

[0008] The control module is also used to control the interaction module to output the vital signs data;

[0009] The interactive module is used to output the vital signs data.

[0010] The health management system provided in this application embodiment collects photoplethysmography (PPG) signals through a data acquisition module and sends them to a control module. The control module preprocesses the PPG signals and sends them to a processing module. The processing module determines the user's vital signs data based on the preprocessed PPG signals and sends it to the control module. The control module then controls the interaction module to output the vital signs data. By determining and outputting the user's vital signs data through the collected PPG information, the health management system enables real-time monitoring of the user's vital signs, allowing the user to promptly detect health abnormalities or changes and improving the user experience.

[0011] According to one embodiment of this application, the acquisition module includes: a photoplethysmography (PPG) module, which acquires the photoplethysmography signal of the user's finger in a transmission or reflection manner.

[0012] In the above technical solution, using a PPG module to collect the photoplethysmography (PPG) signal of a user's finger in a projective or reflective manner is a non-invasive method that can avoid interference from the external environment. The projective or reflective method can capture blood flow signals more accurately and can collect stable signals under different environmental conditions.

[0013] According to one embodiment of this application, the control module is used for:

[0014] The photoplethysmography (PPG) signal is subjected to DC signal removal, high-frequency noise reduction, and signal trimming to obtain a preprocessed PPG signal.

[0015] In the above technical solution, DC signal removal, high-frequency noise reduction, and signal clipping of the photoplethysmography (PPG) signal can improve the quality and stability of the PPG signal, remove potential noise and interference, and make the PPG signal clearer and more accurate. Removing the DC signal makes the baseline of the PPG signal more stable, which helps to accurately measure the amplitude and frequency of the pulse wave; reducing high-frequency noise improves the signal-to-noise ratio of the PPG signal, making it easier to analyze and interpret; and signal clipping helps to focus on analyzing key parts, further improving the efficiency and accuracy of PPG signal processing.

[0016] According to one embodiment of this application, the interaction module is further configured to acquire a first input from the user and send the first input to the control module, wherein the first input is used to trigger vital sign detection;

[0017] The control module is also configured to send a trigger signal to the acquisition module based on the first input, so as to trigger the acquisition module to acquire the photoplethysmography (PPG) signal.

[0018] In the above technical solution, the user's first input is obtained through the interaction module to trigger vital sign detection. The user can trigger vital sign detection through their own operation or needs, which enhances the user's sense of participation and control, and improves the user's satisfaction and experience.

[0019] According to one embodiment of this application, the interaction module includes at least one of the following:

[0020] A touch screen is installed on the door of the refrigeration equipment;

[0021] Client-side APP;

[0022] A first camera module is installed on the door of the refrigeration equipment;

[0023] An infrared / ultrasonic detector is installed on the door of the refrigeration equipment;

[0024] A voice module is installed on the door of the refrigeration equipment.

[0025] In the above technical solutions, different forms of interactive modules provide diverse user interaction methods, allowing users to choose the most suitable input method for themselves, thereby conveniently initiating vital sign detection and ensuring the accuracy and reliability of data collection. This can better adapt to the needs and habits of different users, provide more convenient, intelligent and humanized services, and enhance the user experience.

[0026] According to one embodiment of this application, obtaining the user's first input includes at least one of the following:

[0027] Acquire the user's first voice input on the touchscreen or client APP, the first voice input being used to trigger vital sign detection;

[0028] The system acquires the user's action of clicking a first button on the touchscreen or client APP, where the first button is a vital signs detection button.

[0029] Acquire the first signal output by the infrared / ultrasonic detector when the user approaches the cooling device;

[0030] The first gesture captured by the first camera module is acquired, and the first gesture is used to trigger vital sign detection.

[0031] The second voice input received by the voice module, which includes a first wake-up word, is obtained. The first wake-up word is used to trigger vital sign detection.

[0032] In the above technical solution, the diverse input methods can flexibly trigger vital sign detection based on different user input behaviors. The process of triggering vital sign detection is simpler and more efficient, eliminating the need to waste time on cumbersome operation steps. It can adapt to the habits and needs of different users, improve the usability and applicability of the system, and make it easier for users to perform vital sign detection.

[0033] According to one embodiment of this application, the vital signs data include at least one of the following: blood pressure, blood oxygen, heart rate, blood lipids, uric acid, and respiratory rate.

[0034] In the above technical solutions, the diversity of vital sign data can comprehensively reflect the health status of the human body, including indicators such as cardiovascular function, metabolic status and respiratory status. This is of great significance for monitoring and assessing user health. Understanding and monitoring this vital sign data helps to detect health problems early, develop personalized health management plans, and seek medical advice and treatment when necessary. It can achieve comprehensive monitoring of the user's vital sign data, enabling users to detect health abnormalities or changes in a timely manner and improve user experience.

[0035] According to one embodiment of this application, the vital signs data include: blood pressure, blood oxygen, and heart rate, and the processing module is used for:

[0036] The preprocessed photoplethysmography (PPG) signal is input into the blood pressure inference model to determine the user's blood pressure.

[0037] The preprocessed photoplethysmography signal is input into the heart rate calculation model to determine the user's heart rate.

[0038] The preprocessed photoplethysmography signal is input into the blood oxygen detection model to determine the user's blood oxygen level.

[0039] In the above technical solution, the photoplethysmography (PPG) signal is input into the blood pressure inference model, heart rate calculation model, and blood oxygen detection model through the processing module. This allows for accurate monitoring and determination of the user's blood pressure, blood oxygen, and heart rate, thereby enabling the monitoring and assessment of the user's health status.

[0040] According to one embodiment of this application, the processing module is further configured to:

[0041] Based on the vital signs data, the user's health status is determined;

[0042] Based on the food information in the refrigeration equipment and the user's health status, a personalized recipe is generated for the user; and / or, based on the user's health status, medication guidance suggestions are generated for the user.

[0043] Send the personalized recipes and / or medication guidance suggestions to the control module;

[0044] The control module is also used to control the interaction module to output the personalized recipes and / or medication guidance suggestions to the user.

[0045] In the above technical solution, personalized recipes and / or medication guidance suggestions are generated based on the food information stored in the refrigeration equipment and the user's health status. Personalized recipes provide nutritionally balanced dietary recommendations tailored to the user's health needs and limitations, improving their eating habits and overall health. Medication guidance suggestions help users use medications correctly, providing more comprehensive health management services.

[0046] According to one embodiment of this application, the processing module is further configured to:

[0047] Based on the user's current vital signs data and historical vital signs data, determine the trend of the user's health status changes;

[0048] Based on the user's health status change trend, feedback information is generated. The feedback information is used to prompt the user to maintain the current lifestyle, or to adjust the current lifestyle or seek medical treatment.

[0049] The feedback information is sent to the control module;

[0050] The control module is also configured to: control the interaction module to output the feedback information.

[0051] In the above technical solution, by analyzing the changing trends of the user's current vital signs data and historical vital signs data, and generating corresponding feedback information, it can help users adjust their lifestyle habits in a timely manner and prevent diseases, thereby achieving personalized health management.

[0052] According to one embodiment of this application, the processing module is further configured to:

[0053] If the user's health condition is critical, an emergency alert message is sent to the control module, so that the control module controls the interaction module to output a preset emergency voice message, or to find the user's emergency contact, establish a communication connection with the emergency contact, and output a preset emergency voice message.

[0054] In the above technical solution, the processing module can respond quickly when it detects a critical health condition of the user, and provide the user with timely emergency assistance and support by outputting preset emergency voice messages or contacting emergency contacts.

[0055] According to one embodiment of this application, the acquisition module further includes at least one of the following:

[0056] Millimeter-wave radar;

[0057] WIFI signal receiver;

[0058] The acquisition module is used to acquire millimeter wave and / or WIFI signals to determine the user's respiratory rate and / or heart rate.

[0059] In the above technical solutions, millimeter-wave radar or WIFI signal receivers can accurately acquire the user's vital signs data without contact.

[0060] According to one embodiment of this application, the processing module is a cloud server, or a functional module or entity on a cloud server, or the processing module is a functional module or entity on a screen motherboard, or the processing module and the control module are integrated on the motherboard of the refrigeration equipment.

[0061] In the above technical solutions, the form of the processing module can be designed according to the actual application scenario and requirements.

[0062] Secondly, this application provides a method for monitoring vital signs, the device comprising:

[0063] The acquisition module acquires the photoplethysmography (PPG) signal and sends the PPG signal to the control module.

[0064] The control module preprocesses the photoplethysmography (PPG) signal to obtain a preprocessed PPG signal, and then sends the preprocessed PPG signal to the processing module.

[0065] Based on the preprocessed photoplethysmography (PPG) signal, the processing module determines the user's vital signs data and sends the vital signs data to the control module.

[0066] The control module controls the interaction module to output the vital signs data.

[0067] In the above technical solution, the acquisition module collects photoplethysmography (PPG) signals and sends them to the control module. The control module preprocesses the PPG signals and sends them to the processing module. The processing module determines the user's vital signs data based on the preprocessed PPG signals and sends it to the control module. The control module then controls the interaction module to output the vital signs data. The health management system determines and outputs the user's vital signs data by collecting PPG information, enabling real-time monitoring and analysis of the user's vital signs data. This allows for timely detection of health abnormalities or changes, improving the user experience.

[0068] Thirdly, this application provides a refrigeration device that includes a health management system as described in the first aspect above, wherein the data collection device is disposed on the refrigeration device.

[0069] In the above technical solution, the cooling device collects photoplethysmography (PPG) signals via a data acquisition device and sends them to the control module. The control module preprocesses the PPG signals and sends them to the processing module. The processing module determines the user's vital signs data based on the preprocessed PPG signals and sends it to the control module. The control module then controls the interaction module to output the vital signs data. By determining and outputting the user's vital signs data through the collected PPG information, the cooling device can achieve real-time monitoring and analysis of the user's vital signs, thereby promptly detecting health abnormalities or changes and improving the user experience.

[0070] According to one embodiment of this application, the acquisition device is either embedded or external.

[0071] In the above technical solutions, the data acquisition device can be embedded or external. Embedded data acquisition devices save space and improve system integration, while external data acquisition devices offer greater flexibility and convenience. The appropriate data acquisition device type can be selected based on the specific application scenario and requirements.

[0072] Fourthly, this application provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the vital signs monitoring method as described in the second aspect above.

[0073] Fifthly, this application provides a chip including a processor and a communication interface, the communication interface being coupled to the processor, the processor being used to run programs or instructions to implement the vital signs monitoring method as described in the second aspect.

[0074] In a sixth aspect, this application provides a computer program product, including a computer program that, when executed by a processor, implements the vital signs monitoring method as described in the second aspect above.

[0075] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0076] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0077] Figure 1 This is one of the structural schematic diagrams of the health management system provided in the embodiments of this application;

[0078] Figure 2 This is a schematic diagram of the projection method for acquiring the photoplethysmography (PPG) signal of a user's finger, as provided in an embodiment of this application.

[0079] Figure 3 This is a schematic diagram of the photoplethysmography (PPG) signal of a user's finger collected using a reflective method according to an embodiment of this application.

[0080] Figure 4 This is a second schematic diagram of the structure of the health management system provided in the embodiments of this application;

[0081] Figure 5 This is the third schematic diagram of the structure of the health management system provided in the embodiments of this application;

[0082] Figure 6 This is a flowchart of the vital sign monitoring method of the health management system provided in this application embodiment;

[0083] Figure 7 This is a schematic diagram of the structure of the refrigeration equipment provided in the embodiments of this application;

[0084] Figure 8 This is a schematic diagram of an electronic device provided in an embodiment of this application.

[0085] Explanation of reference numerals in the attached figures:

[0086] 1: Health Management System; 10: Data Acquisition Module; 20: Control Module;

[0087] 30: Processing module; 40: Interaction module; 50: Refrigeration equipment;

[0088] 201: First LED; 202: Second LED; 203: First PD;

[0089] 204: Second PD; 301: Third LED; 302: Fourth LED;

[0090] 303: Third PD; 700: Electronic device; 701: Processor;

[0091] 702: Memory. Detailed Implementation

[0092] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0093] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0094] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0095] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0096] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0097] The health management system, vital sign monitoring method, and refrigeration equipment provided in this application will be described in detail below with reference to the accompanying drawings and through specific embodiments and application scenarios.

[0098] Among them, the vital sign monitoring method of the health management system can be applied to the terminal, specifically executed by the hardware or software in the terminal.

[0099] Figure 1 This is one of the structural schematic diagrams of the health management system provided in the embodiments of this application. For example... Figure 1 As shown, the health management system 1 includes: a data acquisition module 10, a control module 20, a processing module 30, and an interaction module 40.

[0100] The acquisition module 10 can be installed on the door of the refrigeration equipment to acquire photoplethysmography (PPG) signals and send the PPG signals to the control module 20.

[0101] It should be noted that the acquisition module 10 can be a device capable of acquiring the user's photoplethysmography (PPG) signal, such as a photoplethysmography device, a photoplethysmography sensor, or a photoplethysmographic (PPG) module.

[0102] It is worth noting that photoplethysmography (PPG) refers to the pulse waveform signal acquired through a PPG meter, pulse wave sensor, or other similar devices. PPG signals reflect changes in blood volume within arteries and can be used to obtain a user's blood pressure, heart rate, blood oxygen saturation, and other relevant physiological parameters. Analysis of these physiological parameters can assess a user's cardiovascular function, heart health, and facilitate the diagnosis and monitoring of certain diseases.

[0103] The refrigeration equipment in this application includes refrigerators, freezers, and other refrigeration devices. The refrigeration equipment in this application can also be replaced by a cargo container, all of which are within the protection scope of this application.

[0104] It should be noted that after receiving the photoplethysmography (PPG) signal from the acquisition module 10, the control module 20 will preprocess the PPG signal to obtain a preprocessed PPG signal, which makes the PPG signal clearer and more accurate, facilitating subsequent analysis.

[0105] Optionally, preprocessing includes removing DC signals from the photoplethysmography (PPG) signal. This can be done using, for example, a high-pass filter or a baseline drift correction algorithm. This can adjust the baseline of the PPG signal to near the zero line, making subsequent analysis more accurate.

[0106] Optionally, preprocessing includes high-frequency noise reduction of the photoplethysmography (PPG) signal. This can be achieved using digital filters or signal processing algorithms, such as low-pass filters and median filters. Digital filters can preserve the main components of the PPG signal while removing high-frequency noise, resulting in a smoother and clearer PPG signal.

[0107] Optionally, preprocessing includes signal trimming of the photoplethysmography (PPG) signal. The PPG signal can be trimmed by setting an appropriate time window or threshold to remove useless parts at the beginning and end, retaining only the important PPG signal segments. This can reduce the computational load of subsequent processing and make the analysis results more accurate.

[0108] The preprocessed photoplethysmography (PPG) signal is a high-quality PPG signal with a specific duration and a specific number of sampling points.

[0109] In this embodiment, the control module 20 sends the preprocessed photoplethysmography (PPG) signal to the processing module 30. Based on the preprocessed PPG signal, the processing module 30 can determine the user's vital signs data.

[0110] Optionally, the user's vital signs data include at least one of blood pressure, blood oxygen, heart rate, blood lipids, uric acid, and respiratory rate. The processing module 30 can obtain the corresponding vital signs data by inputting the user's vital signs data into the corresponding calculation model.

[0111] The computational model here can be obtained by training an artificial intelligence model, which includes: traditional machine learning models, deep learning models, deep reinforcement learning models, Bayesian networks, etc.

[0112] Optionally, when the vital signs data include blood pressure, blood oxygen, and heart rate, the processing module 30 can determine the user's blood pressure by inputting the photoplethysmography (PPG) signal into the blood pressure inference model, determine the user's heart rate by inputting the PPG signal into the heart rate calculation model, and determine the user's blood oxygen by inputting the PPG signal into the blood oxygen detection model.

[0113] Understandably, after the processing module 30 obtains the user's vital signs data, it sends the vital signs data to the control module 20, and the control module 20 controls the interaction module 40 to output the vital signs data to the user.

[0114] It is worth noting that the interaction module 40 can be a touch screen or a client APP installed on the door of the refrigeration equipment.

[0115] Optionally, the interaction module 40 includes a touch screen installed on the door of the refrigeration equipment, or a client APP. In addition, the interaction module 40 also includes one or more of the following: a camera installed on the door of the refrigeration equipment, an infrared / ultrasonic detector installed on the door of the refrigeration equipment, and a voice module installed on the door of the refrigeration equipment.

[0116] Optionally, when the interaction module 40 is a touch screen installed on the door of the refrigeration equipment, the user can send a signal to the control module 20 to collect vital sign data through the touch screen. The control module 20 can control the touch screen to present the vital sign data on the screen in the form of a report or output it in the form of voice playback.

[0117] Optionally, when the interaction module 40 is a client APP, such as an APP on a mobile phone, the user can send a signal to the control module 20 to collect vital sign data through the APP. The control module 20 can control the APP to present the vital sign data on the screen in the form of a report or output it in the form of voice playback.

[0118] Optionally, when the interaction module 40 consists of a camera installed on the door of the refrigeration equipment and a touch screen installed on the door of the refrigeration equipment, the camera captures facial images, performs facial recognition on the facial images, and when a face is detected, sends a signal to the control module 20 to collect vital sign data. The control module 20 can control the touch screen to present the vital sign data on the screen in the form of a report or output it in the form of voice playback.

[0119] Optionally, when the interaction module 40 consists of an infrared / ultrasonic detector installed on the door of the refrigeration equipment and a touch screen installed on the door of the refrigeration equipment, when a user approaches the refrigeration equipment, the infrared or ultrasonic detector will detect the user's approach and send a signal to the control module 20 to collect vital sign data. The control module 20 can control the touch screen to present the vital sign data on the screen in the form of a report or output it in the form of voice playback.

[0120] The health management system provided in this application embodiment collects photoplethysmography (PPG) signals through a data acquisition module and sends them to a control module. The control module preprocesses the PPG signals and sends them to a processing module. The processing module determines the user's vital signs data based on the preprocessed PPG signals and sends it to the control module. The control module then controls the interaction module to output the vital signs data. By determining and outputting the user's vital signs data through the collected PPG information, the health management system enables real-time monitoring of the user's vital signs, allowing the user to promptly detect health abnormalities or changes and improving the user experience.

[0121] In one embodiment of this application, the acquisition module includes a photoplethysmography (PPG) module, which acquires the photoplethysmography signal of the user's finger in a transmission or reflection manner.

[0122] It should be noted that the photoplethysmography (PPG) module is a sensor module used to detect pulse waveforms and can acquire heartbeat signals through photoelectric measurement technology.

[0123] Optionally, the PPG module includes at least one light-emitting diode (LED) and at least one photodiode (PD) or photoresistor. The light emitted by the LED passes through the skin and is received by the photodiode or photoresistor, thereby detecting blood flow in the skin's microvessels. When the heart beats, blood flows, causing changes in blood flow in the skin's microvessels, which in turn causes changes in the amount of light absorbed. The PPG module measures this change in light absorption and converts it into a pulse waveform signal. By analyzing these signals, the user's vital signs data, such as blood pressure, blood oxygen, heart rate, blood lipids, uric acid, and respiratory rate, can be obtained.

[0124] Optionally, the LED can be an infrared light-emitting diode (IR LED) or an RGB LED, such as an LED that emits green light in the 530nm band. The LED can also be other types of LEDs, and this application does not limit them.

[0125] Optionally, the PPG module uses a transmissive method to collect light, with LEDs and PDs located on either side of the user's finger. The light emitted by the LEDs is transmitted through the user's finger into the skin and received by the photodiode or photoresistor on the opposite side. Figure 2 This is a schematic diagram of the projection method for acquiring the photoplethysmography (PPG) signal of a user's finger, as provided in the embodiments of this application. Figure 2 As shown, the PPG module is located in a U-shaped groove. The PPG module includes a first LED 201, a second LED 202, a first PD 203, and a second PD 204. The first LED 201 and the second LED 202 are located on one side of the U-shaped groove, and the first PD 203 and the second PD 204 are located on the other side of the U-shaped groove. When a user's finger is inserted into the opening of the U-shaped groove, the light emitted by the first LED 201 and the second LED 202 is transmitted through the user's finger into the skin and received by the first PD 203 and the second PD 204.

[0126] Optionally, the PPG module uses a reflective method to collect light, with the LED and PD located on the same side of the user's finger. The light emitted by the LED directly illuminates the skin surface of the finger and is received by the photodiode or photoresistor on the same side. Figure 3 This is a schematic diagram of a reflective method for acquiring the photoplethysmography (PPG) signal of a user's finger, as provided in an embodiment of this application. Figure 3As shown, the PPG module includes a third LED 301, a fourth LED 302, and a third PD 303. The third PD 303 is located at the center of the PPG module, and the third LED 301 and the fourth LED 302 are located on both sides of the third PD 303. When a user's finger touches the PPG module, the light emitted by the third LED 301 and the fourth LED 302 directly shines on the skin surface of the finger and is received by the third PD 303.

[0127] It's worth noting that when a user's heart beats, blood flow changes with the heartbeat, causing variations in blood flow to the skin surface of the fingers, thus affecting the amount of light reflected from the fingertips. Photodiodes or photoresistors measure these changes in light reflection and convert them into electrical signals, resulting in a photoplethysmography (PPG) waveform. Both transmissive and reflective methods utilize changes in skin color caused by blood flow to measure PPG signals, differing only in the light propagation path and detection method.

[0128] Optionally, when a user's finger touches the PPG module, the PPG module will automatically start collecting the photoplethysmography (PPG) signal from the user's finger and send the PPG signal to the control module. This allows for monitoring of the user's vital signs without requiring user input to trigger the PPG signal collection, thus improving the user experience.

[0129] In the above technical solution, using a PPG module to collect the photoplethysmography (PPG) signal of a user's finger in a projective or reflective manner is a non-invasive method that can avoid interference from the external environment. The projective or reflective method can accurately capture blood flow signals and can collect stable PPG signals under different environmental conditions.

[0130] In one embodiment of this application, the control module is used to:

[0131] The photoplethysmography (PPG) signal is subjected to DC signal removal, high-frequency noise reduction, and signal trimming to obtain a preprocessed PPG signal.

[0132] It is worth noting that preprocessing is usually required when processing photoplethysmography (PPG) signals, including DC signal removal, high-frequency noise reduction, and signal trimming. Preprocessed PPG signals have a specific duration or a specific number of sampling points, allowing for more accurate determination of the user's vital signs.

[0133] Optionally, the acquired photoplethysmography (PPG) signal may contain a DC component, meaning the signal baseline may be shifted. This shift may be caused by factors such as changes in sensor sensitivity or ambient light. The DC signal can be removed using, for example, a high-pass filter or a baseline drift correction algorithm, adjusting the PPG signal baseline to near zero and making subsequent analysis more accurate.

[0134] Optionally, the acquired photoplethysmography (PPG) signal may be affected by high-frequency noise, which may originate from environmental interference, power supply interference, etc. High-frequency noise can be filtered out using digital filters or signal processing algorithms. Digital filters include low-pass filters and median filters. Digital filters can retain the main components of the PPG signal while removing high-frequency noise, making the PPG signal smoother and clearer.

[0135] Optionally, the photoplethysmography (PPG) signal may contain some unimportant parts, such as the initial stable phase or the final decay phase. By setting an appropriate time window or threshold, the PPG signal can be trimmed to remove the useless parts at the beginning and end, retaining only the important PPG signal segments. This can reduce the computational load of subsequent processing and make the analysis results more accurate.

[0136] In the above technical solution, DC signal removal, high-frequency noise reduction, and signal clipping of the photoplethysmography (PPG) signal can improve the quality and stability of the PPG signal, remove potential noise and interference, and make the PPG signal clearer and more accurate. Removing the DC signal makes the baseline of the PPG signal more stable, which helps to accurately measure the amplitude and frequency of the pulse wave; reducing high-frequency noise improves the signal-to-noise ratio of the PPG signal, making it easier to analyze and interpret; and signal clipping helps to focus on analyzing key parts, further improving the efficiency and accuracy of PPG signal processing.

[0137] In one embodiment of this application, the interaction module is further configured to acquire a first input from the user and send the first input to the control module, wherein the first input is used to trigger vital sign detection;

[0138] The control module is also configured to send a trigger signal to the acquisition module based on the first input, so as to trigger the acquisition module to acquire the photoplethysmography (PPG) signal.

[0139] It is worth noting that the user's initial input includes the user's voice, button clicks, physical proximity, and specific actions. This means that vital sign detection can be triggered / initiated through voice detection, user proximity detection, and user intent detection. After the interaction module receives the user's initial input, it sends it to the control module. Upon receiving the initial input, the control module sends a trigger signal to the acquisition module to initiate the acquisition of photoplethysmography (PPG) signals.

[0140] In one embodiment of this application, the interaction module includes at least one of the following:

[0141] A touch screen is installed on the door of the refrigeration equipment;

[0142] Client-side APP;

[0143] A first camera module is installed on the door of the refrigeration equipment;

[0144] An infrared / ultrasonic detector is installed on the door of the refrigeration equipment;

[0145] A voice module is installed on the door of the refrigeration equipment.

[0146] It should be noted that, when the interaction module is used to obtain the user's first input to trigger vital sign detection, the interaction module can be one or more of the following: a touch screen installed on the door of the refrigeration equipment, a client APP, a first camera module installed on the door of the refrigeration equipment, an infrared / ultrasonic detector installed on the door of the refrigeration equipment, or a voice module installed on the door of the refrigeration equipment.

[0147] Optionally, when the interaction module includes a touch screen installed on the door of the refrigeration equipment, the user can perform input operations through the touch screen, such as clicking a button, entering text or voice. For example, when the user clicks a button, the control module sends a trigger signal to the acquisition module, triggering the acquisition module to acquire the user's photoplethysmography (PPG) signal.

[0148] Optionally, when the interaction module includes a client APP, the user can perform input operations through the mobile application, such as entering relevant information on the application interface or clicking a button. For example, after the user enters relevant information, the control module sends a trigger signal to the acquisition module, triggering the acquisition module to acquire the user's photoplethysmography (PPG) signal.

[0149] Optionally, when the interaction module includes a first camera module installed on the door of the refrigeration equipment, the first camera can capture the user's face or hand image, and perform face recognition or gesture recognition on the user to obtain the user's input action. For example, when the first camera module detects a face, the control module sends a trigger signal to the acquisition module to trigger the acquisition module to acquire the user's photoplethysmography (PPG) signal.

[0150] Optionally, the first camera module can be a wide-angle camera, an infrared camera, a high-definition camera, a panoramic camera, a wireless camera, a night vision camera, a smart camera, etc. The type of the first camera module in this application embodiment is not limited.

[0151] Optionally, when the interaction module includes an infrared / ultrasonic detector installed on the door of the refrigeration equipment, the user can detect the user's near-field movements or gestures through infrared or ultrasonic waves to obtain the user's input actions. For example, when the infrared detector or ultrasonic detector detects that the user approaches the refrigeration equipment and stays for more than a preset time, the control module sends a trigger signal to the acquisition module, triggering the acquisition module to acquire the user's photoplethysmography (PPG) signal.

[0152] Optionally, when the interaction module includes a voice module installed on the door of the refrigeration equipment, the voice module includes components such as a microphone, an amplifier, and a signal processing circuit. The user can input voice through the microphone. After receiving the user's voice input, the voice module performs voice recognition. The control module sends a trigger signal to the acquisition module, triggering the acquisition module to acquire the user's photoplethysmography (PPG) signal.

[0153] In the above technical solutions, different forms of interactive modules provide diverse user interaction methods, allowing users to choose the most suitable input method for themselves, thereby conveniently initiating vital sign detection and ensuring the accuracy and reliability of data collection. This can better adapt to the needs and habits of different users, provide more convenient, intelligent and humanized services, and enhance the user experience.

[0154] In one embodiment of this application, obtaining the user's first input includes at least one of the following:

[0155] Acquire the user's first voice input on the touchscreen or client APP, the first voice input being used to trigger vital sign detection;

[0156] The system acquires the user's action of clicking a first button on the touchscreen or client APP, where the first button is a vital signs detection button.

[0157] Acquire the first signal output by the infrared / ultrasonic detector when the user approaches the cooling device;

[0158] The first gesture captured by the first camera module is acquired, and the first gesture is used to trigger vital sign detection.

[0159] The second voice input received by the voice module, which includes a first wake-up word, is obtained. The first wake-up word is used to trigger vital sign detection.

[0160] Optionally, users can use voice input on the touchscreen or client app, such as saying commands like "Start detection." The control module receives this voice input and performs voice recognition. Upon recognizing the user's command, it triggers vital sign detection. The control module sends a trigger signal to the acquisition module, which then acquires the user's photoplethysmography (PPG) signal.

[0161] Optionally, the user can tap the vital signs detection button on the touchscreen or client app. The control module will detect the user's tap and trigger the corresponding vital signs detection. The control module will then send a trigger signal to the acquisition module, which will then acquire the user's photoplethysmography (PPG) signal.

[0162] Optionally, when a user approaches the cooling device, the infrared or ultrasonic detector will detect the user's approach and output a specific first signal. After receiving the first signal generated by the infrared or ultrasonic detector, the control module will trigger the vital signs detection. The control module will send a trigger signal to the acquisition module, triggering the acquisition module to acquire the user's photoplethysmography (PPG) signal.

[0163] Optionally, the camera module can capture the user's first gesture, such as a gesture pre-designed by the user. When the camera module captures the user's first gesture, it will trigger vital sign detection. The control module will send a trigger signal to the acquisition module, which will then collect the user's photoplethysmography (PPG) signal.

[0164] Optionally, the user can input a second voice command containing a first wake-up word into the voice module. The first wake-up word can trigger vital sign detection, such as "start vital sign detection". After receiving the second voice input, the voice module triggers vital sign detection, and the control module sends a trigger signal to the acquisition module, triggering the acquisition module to acquire the user's photoplethysmography (PPG) signal.

[0165] It is worth noting that users can trigger vital sign detection through any one or more combinations of the above methods to meet their needs and provide a convenient operating experience.

[0166] In the above technical solution, the diverse input methods can flexibly trigger vital sign detection based on different user input behaviors. The process of triggering vital sign detection is simpler and more efficient, eliminating the need to waste time on cumbersome operation steps. It can adapt to the habits and needs of different users, improve the usability and applicability of the system, and enable more users to conveniently perform vital sign detection.

[0167] In the above technical solution, the user's first input is obtained through the interaction module to trigger vital sign detection. The user can trigger vital sign detection through their own operation or needs, which enhances the user's sense of participation and control, and improves the user's satisfaction and experience.

[0168] In one embodiment of this application, the vital signs data include at least one of the following: blood pressure, blood oxygen, heart rate, blood lipids, uric acid, and respiratory rate.

[0169] It is easy to understand that vital signs data are various indicators that can reflect a person's life activities and health status, including at least one of blood pressure, blood oxygen, heart rate, blood lipids, uric acid, and respiratory rate.

[0170] Optional, blood pressure is the pressure exerted by blood on the walls of arteries. It is usually divided into systolic pressure and diastolic pressure. Blood pressure is one of the important indicators for measuring the health of the cardiovascular system. For example, hypertension is one of the main risk factors for cardiovascular disease. Long-term uncontrolled hypertension may lead to heart disease, stroke and other health problems.

[0171] Optional, blood oxygen is the oxygen content in the blood, usually expressed as blood oxygen saturation. It is an important indicator for measuring the degree of blood oxygenation. Blood oxygen level can reflect the efficiency of oxygen delivery to various parts of the body. Low blood oxygen level may be a sign of respiratory or cardiovascular problems, and may also be related to certain lung or cardiovascular diseases.

[0172] Optional, heart rate is the number of times the heart beats per minute and is one of the important indicators of the functional status of the cardiovascular system. The normal range of heart rate varies from person to person. An abnormal heart rate may indicate arrhythmia or other heart problems. Monitoring heart rate can help assess exercise status, stress response and cardiovascular health.

[0173] Alternatively, blood lipids are the lipid content in the blood, including cholesterol and triglycerides, which have an important impact on cardiovascular health. Blood lipid levels can be used to assess a person's cardiovascular health.

[0174] Optionally, uric acid is a substance produced by metabolism in the body. Uric acid levels can reflect kidney function and metabolic status, and are associated with diseases such as gout. Elevated uric acid levels may be associated with gout and metabolic syndrome. Uric acid monitoring helps in the diagnosis and monitoring of these diseases and guides treatment plans.

[0175] Optionally, respiratory rate is the number of breaths per minute, reflecting the activity of the respiratory system and its gas exchange function. Changes in respiratory rate may reflect lung health, respiratory diseases, or cardiovascular problems. Monitoring respiratory rate helps assess respiratory function and overall health.

[0176] In the above technical solutions, the diversity of vital sign data can comprehensively reflect the health status of the human body, including indicators such as cardiovascular function, metabolic status and respiratory status. This is of great significance for monitoring and assessing user health. Understanding and monitoring this vital sign data helps to detect health problems early, develop personalized health management plans, and seek medical advice and treatment when necessary. It can achieve comprehensive monitoring of the user's vital sign data, enabling users to detect health abnormalities or changes in a timely manner and improve user experience.

[0177] In one embodiment of this application, the vital signs data include: blood pressure, blood oxygen, and heart rate, and the processing module is used for:

[0178] The preprocessed photoplethysmography (PPG) signal is input into the blood pressure inference model to determine the user's blood pressure.

[0179] The preprocessed photoplethysmography signal is input into the heart rate calculation model to determine the user's heart rate.

[0180] The preprocessed photoplethysmography signal is input into the blood oxygen detection model to determine the user's blood oxygen level.

[0181] It should be noted that after the control module receives the photoplethysmography (PPG) signal acquired by the acquisition module, it will preprocess the PPG signal. Furthermore, the control module controls the processing module to process the preprocessed PPG signal to obtain vital sign data.

[0182] Optionally, when vital signs data include blood pressure, the processing module can determine the user's blood pressure by inputting the photoplethysmography (PPG) signal into the blood pressure inference model. The blood pressure inference model receives the preprocessed PPG signal as input, and after a series of algorithms and inference processes, outputs the user's blood pressure value, which helps to monitor the user's cardiovascular health.

[0183] Optionally, when vital signs data include heart rate, the processing module can determine the user's heart rate by inputting the photoplethysmography (PPG) signal into the heart rate calculation model. The heart rate calculation model receives the preprocessed PPG signal as input and uses specific calculation methods and algorithms to determine the user's heart rate, which helps to assess the user's cardiac activity.

[0184] Optionally, when vital signs data include blood oxygen, the processing module can determine the user's blood oxygen by inputting the photoplethysmography (PPG) signal into the blood oxygen detection model. The blood oxygen detection model receives the preprocessed PPG signal as input and then determines the user's blood oxygen level through specific detection algorithms and processing steps, which helps to assess the user's oxygen supply and respiratory function.

[0185] Blood pressure inference models, heart rate calculation models, and blood oxygen detection models can all be obtained by training artificial intelligence models, including traditional machine learning models, deep learning models, deep reinforcement learning models, Bayesian networks, etc.

[0186] In the above technical solution, the photoplethysmography (PPG) signal is input into the blood pressure inference model, heart rate calculation model, and blood oxygen detection model through the processing module. This allows for accurate monitoring and determination of the user's blood pressure, blood oxygen, and heart rate, thereby enabling the monitoring and assessment of the user's health status.

[0187] In one embodiment of this application, the processing module is further configured to:

[0188] Based on the vital signs data, the user's health status is determined;

[0189] Based on the food information in the refrigeration equipment and the user's health status, a personalized recipe is generated for the user; and / or, based on the user's health status, medication guidance suggestions are generated for the user.

[0190] Send the personalized recipes and / or medication guidance suggestions to the control module;

[0191] The control module is also used to control the interaction module to output the personalized recipes and / or medication guidance suggestions to the user.

[0192] It is worth noting that the processing module can determine the user's health status based on the user's vital sign data. For example, when the vital sign data includes blood pressure, heart rate, and blood oxygen, the processing module will compare the user's vital sign data with the normal range to determine the user's health status and assess the user's health risks. For example, whether the user's blood pressure is higher or lower than the normal range, or whether the user has cardiovascular disease, diabetes, etc.

[0193] Optionally, the food information in the refrigeration equipment can be the food information in the shelf area captured by the second camera module. The second camera module is set inside the refrigeration equipment and faces the shelf inside the refrigeration equipment. It is used to periodically take pictures of the shelf and send the captured images or videos to the processing module. The processing module is used to process the images or videos to obtain the food information in the refrigeration equipment.

[0194] It should be noted that the second camera module can be installed in the middle of the top of the inner liner of the refrigeration equipment and tilted towards the shelf, for periodically taking pictures of the shelf area after the door of the refrigeration equipment is opened.

[0195] Optionally, the second camera module can be a wide-angle camera, an infrared camera, a high-definition camera, a panoramic camera, a wireless camera, a night vision camera, a smart camera, etc. The type of the second camera module in this application embodiment is not limited.

[0196] Optionally, the second camera module can be connected to the processing module via wired or wireless means. The second camera module sends the captured video or images to the processing module, which processes the images or videos to obtain information about the food in the refrigeration equipment, including the type and quantity of the food.

[0197] It should be noted that the food information in the refrigeration equipment includes not only the shelf area, but also all areas inside the refrigerator, such as drawers, refrigerator compartments, freezer compartments, and bottle holders. Food information can be obtained through camera modules installed in the aforementioned areas, or through RFID technology; this application does not impose any restrictions on this.

[0198] Optionally, the user can upload food information from the refrigeration equipment as a second input through the interaction module. The control module determines the food information of the refrigeration equipment based on the user's second input, including the type and quantity of the food, and sends the food information to the processing module.

[0199] It is worth noting that the second input can be text input, voice input, or selection from a preset list of ingredients.

[0200] Optionally, the processing module can provide users with suitable recipe suggestions and generate personalized recipes based on the food information in the refrigeration equipment and the user's health status, combined with factors such as the user's health needs, food inventory, and nutritional needs.

[0201] Optionally, the processing module can generate medication guidance suggestions for the user based on the food information in the refrigeration equipment and the user's health condition, such as suggestions on the timing and dosage of medication, to ensure that the user uses the medication correctly according to scientific advice.

[0202] It should be noted that the personalized recipes and / or medication guidance suggestions generated by the processing module will be sent to the control module. The control module then instructs the interaction module to output the personalized recipes and / or medication guidance suggestions to the user. Users can directly obtain personalized recipes and medication guidance suggestions through the interaction module, enabling them to make corresponding adjustments and decisions based on their needs and health conditions.

[0203] In the above technical solution, personalized recipes and / or medication guidance suggestions are generated based on the food information stored in the refrigeration equipment and the user's health status. Personalized recipes provide nutritionally balanced dietary recommendations tailored to the user's health needs and limitations, improving their eating habits and overall health. Medication guidance suggestions help users use medications correctly, providing more comprehensive health management services.

[0204] In one embodiment of this application, the processing module is further configured to:

[0205] Based on the user's current vital signs data and historical vital signs data, determine the trend of the user's health status changes;

[0206] Based on the user's health status change trend, feedback information is generated. The feedback information is used to prompt the user to maintain the current lifestyle, or to adjust the current lifestyle or seek medical treatment.

[0207] The feedback information is sent to the control module;

[0208] The control module is also used to control the interaction module to output the feedback information.

[0209] It should be noted that the processing module analyzes the user's health status trend based on the user's current vital signs data and historical vital signs data. By comparing the current data with historical data, the processing module can identify whether the user's health status is changing, and whether the trend is improving or deteriorating.

[0210] Optionally, if the user's health condition shows an improving trend, a first feedback message is generated and sent to the control module so that the control module controls the interaction module to output the first feedback message. The first feedback message is used to remind the user to maintain their current lifestyle.

[0211] Optionally, if the user's health condition shows a worsening trend, a second feedback message is generated and sent to the control module so that the control module controls the interaction module to output the second feedback message. The second feedback message is used to prompt the user to adjust their current lifestyle or seek medical attention. For example, it may suggest that the user adjust their diet, increase their exercise, or seek medical attention as soon as possible.

[0212] In one embodiment of this application, the processing module is further configured to:

[0213] If the user's health condition is critical, an emergency alert message is sent to the control module, so that the control module controls the interaction module to output a preset emergency voice message, or to find the user's emergency contact, establish a communication connection with the emergency contact, and output a preset emergency voice message.

[0214] Optionally, when the processing module determines that the user's health condition is critical based on the user's current vital signs data, it will send an emergency alert to the control module. The control module will then control the interaction module to output a preset emergency voice message to remind the user to take immediate first aid measures.

[0215] Optionally, when the processing module determines that the user's health condition is critical based on the user's current vital signs data, it will send an emergency alert to the control module. The control module will then locate the user's emergency contacts and attempt to establish a communication connection with them, such as through telephone, SMS, or other communication methods, to notify the emergency contacts of the user's emergency situation so that they can provide assistance to the user.

[0216] In the above technical solution, the processing module can respond quickly when it detects a critical health condition of the user, and provide the user with timely emergency assistance and support by outputting preset emergency voice messages or contacting emergency contacts.

[0217] It is easy to understand that the processing module sends the first or second feedback information to the control module, and the control module controls the interaction module to display the first or second feedback information to the user, so that the user can understand the trend of changes in their health status in a timely manner and make corresponding adjustments based on the suggestions provided.

[0218] In the above technical solution, by analyzing the changing trends of the user's current vital signs data and historical vital signs data, and generating corresponding feedback information, it can help users adjust their lifestyle habits in a timely manner and prevent diseases, thereby achieving personalized health management.

[0219] In one embodiment of this application, the acquisition module further includes at least one of the following:

[0220] Millimeter-wave radar;

[0221] WIFI signal receiver;

[0222] The acquisition module is used to acquire millimeter wave and / or WIFI signals to determine the user's respiratory rate and / or heart rate.

[0223] It should be noted that the embodiments of this application can also use non-contact methods to determine vital sign data, and the acquisition module may also include millimeter-wave radar and / or WIFI signal receiver.

[0224] Optionally, when the acquisition module includes millimeter-wave radar, the millimeter-wave radar can measure the user's movement and breathing by utilizing the characteristic that millimeter waves (a type of radio frequency band) penetrate the user and reflect back. When the millimeter waves pass through the user, they are slightly affected by physiological activities such as breathing and heartbeat, resulting in slight changes in the frequency and amplitude of the reflected waves. By analyzing these changes, the user's respiratory rate and / or heart rate can be inferred.

[0225] Optionally, when the acquisition module includes a Wi-Fi signal receiver, the Wi-Fi signal can penetrate the user and reflect back. By analyzing the signal echo, the user's motion information can be obtained. When the Wi-Fi signal passes through the user, the user's breathing and heartbeat will cause slight changes in the Wi-Fi signal. These changes can be captured and analyzed by the Wi-Fi signal receiver to determine the user's respiratory rate and / or heart rate.

[0226] Optionally, the acquisition module sends the acquired millimeter wave and / or WIFI signals to the processing module, which is also used to determine the user's vital signs data based on the millimeter wave and / or WIFI signals.

[0227] In the above technical solutions, millimeter-wave radar or WIFI signal receivers can accurately acquire the user's vital signs data without contact.

[0228] In one embodiment of this application, the processing module is a cloud server, or a functional module or entity on a cloud server, or the processing module is a functional module or entity on a screen motherboard, or the processing module and the control module are integrated on the motherboard of the refrigeration equipment.

[0229] Optionally, when the processing module is a cloud server, centralized management and processing of data can be achieved. Cloud servers have powerful computing and storage capabilities, enabling them to process large amounts of health data and perform complex analyses, thereby providing more accurate and personalized health monitoring and feedback services. Furthermore, cloud servers can also achieve cross-device and cross-platform data synchronization and sharing, allowing users to access their vital signs data anytime, anywhere through various terminals.

[0230] Optional, Figure 4 This is the second structural schematic diagram of the health management system provided in the embodiments of this application. When the processing module is a functional module or entity on the motherboard of the screen, it can realize localized real-time monitoring and feedback. The processing module can respond to changes in the user's health status more quickly and output relevant information in real time, reduce data transmission delay, improve user experience, and ensure the normal operation of the processing module when the network connection is unstable or the cloud server cannot be accessed.

[0231] Optional, Figure 5 This is the third structural schematic diagram of the health management system provided in this application embodiment. When the processing module and the control module are integrated on the motherboard of the refrigeration equipment, they can be closely integrated with the refrigeration equipment. The motherboard of the refrigeration equipment has high stability and reliability, which can ensure the stable operation of the processing module and the control module for a long time.

[0232] In the above technical solutions, the form of the processing module can be designed according to the actual application scenario and requirements.

[0233] This application also provides a method for monitoring vital signs. Figure 6 This is a flowchart of a vital signs monitoring method provided in this application, such as... Figure 6 As shown, the vital signs monitoring method of this health management system includes steps 610, 620, 630 and 640.

[0234] Step 610: The acquisition module acquires the photoplethysmography (PPG) signal and sends the PPG signal to the control module.

[0235] Step 620: The control module preprocesses the photoplethysmography (PPG) signal to obtain a preprocessed PPG signal, and sends the preprocessed PPG signal to the processing module.

[0236] Step 630: The processing module determines the user's vital signs data based on the preprocessed photoplethysmography (PPG) signal and sends the vital signs data to the control module.

[0237] Step 640: The control module controls the interaction module to output the vital signs data.

[0238] In the above technical solution, the acquisition module collects photoplethysmography (PPG) signals and sends them to the control module. The control module preprocesses the PPG signals and sends them to the processing module. The processing module determines the user's vital signs data based on the preprocessed PPG signals and sends it to the control module. The control module then controls the interaction module to output the vital signs data. The health management system determines and outputs the user's vital signs data by collecting PPG information, enabling real-time monitoring and analysis of the user's vital signs data. This allows for timely detection of health abnormalities or changes, improving the user experience.

[0239] Optionally, the acquisition module acquires photoplethysmography (PPG) signals, including:

[0240] The acquisition module acquires the photoplethysmography (PPG) signal of the user's finger using either transmission or reflection methods.

[0241] Optionally, the control module preprocesses the photoplethysmography (PPG) signal, including:

[0242] The control module performs DC signal removal, high-frequency noise reduction, and signal trimming on the photoplethysmography (PPG) signal to obtain a preprocessed PPG signal.

[0243] Optionally, the vital signs monitoring method further includes:

[0244] The interaction module obtains the user's first input and sends the first input to the control module. The first input is used to trigger vital sign detection.

[0245] Based on the first input, the control module sends a trigger signal to the acquisition module to trigger the acquisition module to acquire the photoplethysmography (PPG) signal.

[0246] Optionally, obtain the user's first input, including at least one of the following:

[0247] Acquire the user's first voice input on the touchscreen or client APP, which is used to trigger vital sign detection;

[0248] The system acquires the user's action of clicking the first button on the touchscreen or client app, where the first button is the vital signs detection button.

[0249] Acquire the first signal output by the infrared / ultrasonic detector when the user approaches the cooling device;

[0250] The first gesture captured by the first camera module is used to trigger vital sign detection.

[0251] The second voice input received by the voice module contains a first wake-up word, which is used to trigger vital sign detection.

[0252] Optionally, the processing module determines the user's vital signs data based on the preprocessed photoplethysmography (PPG) signal, including at least one of the following:

[0253] The processing module inputs the preprocessed photoplethysmography (PPG) signal into the blood pressure inference model to determine the user's blood pressure.

[0254] The processing module inputs the preprocessed photoplethysmography (PPG) signal into the heart rate calculation model to determine the user's heart rate.

[0255] The processing module inputs the preprocessed photoplethysmography (PPG) signal into the blood oxygen detection model to determine the user's blood oxygen level.

[0256] Optionally, the vital signs monitoring method further includes:

[0257] The processing module determines the user's health status based on vital sign data;

[0258] The processing module generates personalized recipes for users based on the food information in the refrigeration equipment and the user's health status; and / or, generates medication guidance suggestions for users based on the user's health status.

[0259] The processing module sends the personalized recipes and / or medication guidance suggestions to the control module;

[0260] The control module controls the interaction module to output personalized recipes and / or medication guidance suggestions to the user.

[0261] Optionally, the vital signs monitoring method further includes:

[0262] The processing module determines the trend of the user's health status based on the user's current vital signs data and historical vital signs data;

[0263] Based on the user's health status change trend, feedback information is generated. The feedback information is used to remind the user to maintain the current lifestyle, or to adjust the current lifestyle or seek medical treatment.

[0264] Send feedback information to the control module;

[0265] The control module controls the interaction module to output the feedback information.

[0266] Optionally, the vital signs monitoring method further includes:

[0267] If the user's health condition is critical, the processing module sends an emergency alert to the control module, so that the control module controls the interaction module to output a preset emergency voice message, or locates the user's emergency contact, establishes a communication connection with the emergency contact, and outputs a preset emergency voice message.

[0268] For an understanding of the above-mentioned vital sign monitoring methods, please refer to the description in the aforementioned health management system embodiments, which can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0269] This application embodiment also provides a refrigeration device, wherein the data collection device is installed on the refrigeration device. Figure 7 This is a schematic diagram of the structure of a refrigeration device including a health management system provided in an embodiment of this application. Figure 7 As shown, the refrigeration equipment 50 includes a health management system 1, and a data acquisition device 10 is installed on the refrigeration equipment 50.

[0270] In the above technical solution, the cooling device collects photoplethysmography (PPG) signals via a data acquisition device and sends them to the control module. The control module preprocesses the PPG signals and sends them to the processing module. The processing module determines the user's vital signs data based on the preprocessed PPG signals and sends it to the control module. The control module then controls the interaction module to output the vital signs data. By determining and outputting the user's vital signs data through the collected PPG information, the cooling device can achieve real-time monitoring and analysis of the user's vital signs, thereby promptly detecting health abnormalities or changes and improving the user experience.

[0271] In one embodiment of this application, the acquisition device is either embedded or external.

[0272] Optionally, when the acquisition device is embedded, it can be directly integrated into the refrigeration equipment, saving additional space and equipment costs. Embedded acquisition devices can be closely integrated with refrigeration equipment, enabling better data exchange and sharing, and improving the overall performance and efficiency of refrigeration equipment.

[0273] Optionally, when the data acquisition device is an external type, it can exist independently outside the cooling equipment, offering greater flexibility and portability. Updating and upgrading external data acquisition devices is relatively easy and can be done independently without affecting the normal operation of the cooling equipment.

[0274] In the above technical solutions, the data acquisition device can be embedded or external. Embedded data acquisition devices save space and improve system integration, while external data acquisition devices offer greater flexibility and convenience. The appropriate data acquisition device type can be selected based on the specific application scenario and requirements.

[0275] For an understanding of the above-mentioned refrigeration equipment, please refer to the description in the aforementioned health management system embodiment, which can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0276] The control module or processing module in this application embodiment can be an electronic device or a component in an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal or other devices besides a terminal. For example, the electronic device can be a mobile phone, tablet computer, laptop computer, handheld computer, in-vehicle electronic device, mobile internet device (MID), augmented reality (AR) / virtual reality (VR) device, robot, wearable device, ultra-mobile personal computer (UMPC), netbook, or personal digital assistant (PDA), etc. It can also be a server, network attached storage (NAS), personal computer (PC), television (TV), ATM, or self-service machine, etc. The embodiments of this application do not specifically limit the scope.

[0277] The control module or processing module in this application embodiment can be a device with an operating system. The operating system can be a Microsoft (Windows) operating system, an Android operating system, an iOS operating system, or other possible operating systems; this application embodiment does not specifically limit the specific operating system.

[0278] In some embodiments, such as Figure 8 As shown, this application embodiment also provides an electronic device 700, including a processor 701, a memory 702, and a computer program stored in the memory 702 and executable on the processor 701. When the program is executed by the processor 701, it implements the various processes of the above-described vital sign monitoring method embodiment and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0279] It should be noted that the electronic devices in the embodiments of this application include the mobile electronic devices and non-mobile electronic devices described above.

[0280] This application also provides a non-transitory computer-readable storage medium storing a computer program. When the computer program is executed by a processor, it implements the various processes of the above-described vital sign monitoring method embodiments and achieves the same technical effect. To avoid repetition, it will not be described again here.

[0281] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0282] This application also provides a computer program product, including a computer program that, when executed by a processor, implements a vital signs monitoring method.

[0283] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0284] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-mentioned food placement recognition method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0285] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0286] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0287] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0288] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

[0289] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0290] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A health management system, characterized in that, include: The module includes a data acquisition module, a control module, a processing module, and an interaction module. The acquisition module is used to acquire photoplethysmography (PPG) signals and send the PPG signals to the control module. The control module is used to preprocess the photoplethysmography (PPG) signal to obtain a preprocessed PPG signal, and send the preprocessed PPG signal to the processing module. The processing module is used to determine the user's vital signs data based on the preprocessed photoplethysmography (PPG) signal, and send the vital signs data to the control module. The control module is also used to control the interaction module to output the vital signs data; The interactive module is used to output the vital signs data.

2. The health management system according to claim 1, characterized in that, The acquisition module includes a photoplethysmography (PPG) module, which acquires the photoplethysmography signal of the user's finger through transmission or reflection.

3. The health management system according to claim 1, characterized in that, The control module is used for: The photoplethysmography (PPG) signal is subjected to DC signal removal, high-frequency noise reduction, and signal trimming to obtain a preprocessed PPG signal.

4. The health management system according to claim 1, characterized in that, The interaction module is also used to obtain the user's first input and send the first input to the control module, wherein the first input is used to trigger vital sign detection. The control module is also configured to send a trigger signal to the acquisition module based on the first input, so as to trigger the acquisition module to acquire the photoplethysmography (PPG) signal.

5. The health management system according to claim 4, characterized in that, The interaction module includes at least one of the following: A touchscreen installed on the door of the refrigeration equipment; Client-side APP; The first camera module is installed on the door of the refrigeration equipment; Infrared / ultrasonic detectors installed on the doors of refrigeration equipment; A voice module installed on the door of the refrigeration equipment.

6. The health management system according to claim 5, characterized in that, The acquisition of the user's first input includes at least one of the following: Acquire the user's first voice input on the touchscreen or client APP, the first voice input being used to trigger vital sign detection; The system acquires the user's action of clicking a first button on the touchscreen or client APP, where the first button is a vital signs detection button. Acquire the first signal output by the infrared / ultrasonic detector when the user approaches the cooling device; The first gesture captured by the first camera module is acquired, and the first gesture is used to trigger vital sign detection. The second voice input received by the voice module, which includes a first wake-up word, is obtained. The first wake-up word is used to trigger vital sign detection.

7. The health management system according to any one of claims 1-6, characterized in that, The vital signs data include at least one of the following: blood pressure, blood oxygen, heart rate, blood lipids, uric acid, and respiratory rate.

8. The health management system according to claim 7, characterized in that, The vital signs data include: blood pressure, blood oxygen, and heart rate. The processing module is used for: The preprocessed photoplethysmography (PPG) signal is input into the blood pressure inference model to determine the user's blood pressure. The preprocessed photoplethysmography signal is input into the heart rate calculation model to determine the user's heart rate. The preprocessed photoplethysmography signal is input into the blood oxygen detection model to determine the user's blood oxygen level.

9. The health management system according to any one of claims 1-6 and 8, characterized in that, The processing module is also used for: Based on the vital signs data, the user's health status is determined; Based on the food information in the refrigeration equipment and the user's health status, a personalized recipe is generated for the user. And / or, based on the user's health status, generate medication guidance recommendations for the user; Send the personalized recipes and / or medication guidance suggestions to the control module; The control module is also used to control the interaction module to output the personalized recipes and / or medication guidance suggestions to the user.

10. The health management system according to claim 9, characterized in that, The processing module is also used for: Based on the user's current vital signs data and historical vital signs data, determine the trend of the user's health status changes; Based on the user's health status change trend, feedback information is generated. The feedback information is used to prompt the user to maintain the current lifestyle, or to adjust the current lifestyle or seek medical treatment. The feedback information is sent to the control module; The control module is also used to control the interaction module to output the feedback information.

11. The health management system according to claim 9, characterized in that, The processing module is also used for: If the user's health condition is critical, an emergency alert message is sent to the control module, so that the control module controls the interaction module to output a preset emergency voice message, or to find the user's emergency contact, establish a communication connection with the emergency contact, and output a preset emergency voice message.

12. The health management system according to claim 2, characterized in that, The acquisition module also includes at least one of the following: Millimeter-wave radar; WIFI signal receiver; The acquisition module is used to acquire millimeter wave and / or WIFI signals to determine the user's respiratory rate and / or heart rate.

13. The health management system according to any one of claims 1 to 6, 8, and 10-12, characterized in that, The processing module is a cloud server, or a functional module or entity on a cloud server, or the processing module is a functional module or entity on the motherboard of the screen, or the processing module and the control module are integrated on the motherboard of the refrigeration equipment.

14. A method for monitoring vital signs, based on a health management system as described in any one of claims 1 to 13, characterized in that, include: The acquisition module acquires the photoplethysmography (PPG) signal and sends the PPG signal to the control module. The control module preprocesses the photoplethysmography (PPG) signal to obtain a preprocessed PPG signal, and then sends the preprocessed PPG signal to the processing module. Based on the preprocessed photoplethysmography (PPG) signal, the processing module determines the user's vital signs data and sends the vital signs data to the control module. The control module controls the interaction module to output the vital signs data.

15. A refrigeration device, characterized in that, A health management system comprising any one of claims 1 to 13, wherein the data collection device is disposed on the refrigeration equipment.

16. The refrigeration equipment according to claim 15, characterized in that, The data acquisition device can be embedded or external.

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