Intelligent ring and wireless charging method thereof

Abstract

This invention discloses a smart ring and its wireless charging method. The smart ring includes a ring shell, a lithium battery, a wireless charging receiver module, a magnetic positioning module, a multi-source sensor module, a microcontroller module, an information storage module, and a power management module. The wireless charging receiver module is attached to the inner side of the ring shell, and the magnetic positioning module is integrated in the middle of the wireless charging receiver module. These multiple modules work together to achieve precise positioning, charging, and data processing. This solution solves the problems of difficult charging positioning and data loss due to connection failure in existing smart rings, achieving charging positioning guidance and hierarchical data storage, ensuring charging reliability and data integrity.

Description

Technical Field

[0001] This invention relates to the field of wireless charging technology, specifically to a smart ring and its wireless charging method. Background Technology

[0002] Existing smart rings, as portable wearable devices, require wireless charging to replenish power and continuously collect data such as heart rate and activity levels, transmitting this data to a control unit. However, current technologies rely on the mechanical fit between the ring's outer shell and the charging base's groove for positioning, lacking a dedicated positioning structure for guidance. This leads to coil center misalignment, significantly reduced coupling efficiency, and poor charging reliability. Furthermore, existing smart rings lack data storage mechanisms for Bluetooth disconnection scenarios. Raw data collected by sensors cannot be saved after disconnection, and data is lost upon reconnection, affecting users' access to complete health and activity data. Current improvements often only optimize charging coil parameters or add separate data storage modules, failing to achieve a coordinated design for positioning and data processing, thus failing to fundamentally solve the dual problems of difficult charging positioning and data loss upon disconnection.

[0003] Based on the above problems, there is an urgent need for a smart ring technology solution that can achieve accurate charging positioning and disconnection data protection in a coordinated manner. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and propose a smart ring, including a ring shell and a lithium battery, and further including a wireless charging receiver module, a magnetic positioning module, a multi-source sensor module, a microcontroller module, an information storage module, and a power management module. The wireless charging receiver module is fitted inside the ring shell, the magnetic positioning module is integrated in the middle of the wireless charging receiver module, the multi-source sensor module is embedded in the wearing surface of the ring shell, and the microcontroller module, information storage module, and power management module are integrated on the same PCB board and fixed inside the ring shell. The output end of the wireless charging receiver module is connected to the input end of the power management module, and the output end of the power management module is connected to the lithium battery, the microcontroller module, the multi-source sensor module, and the information storage module respectively. The multi-source sensor module and the information storage module are bidirectionally connected to the microcontroller module, and the magnetic positioning module is mechanically fixed to the wireless charging receiver module and achieves positioning guidance through magnetic coupling.

[0005] Preferably, the wireless charging receiver module includes a ring-shaped FPC coil, a magnetic sheet assembly, and a resonant capacitor. The ring-shaped FPC coil is made of flexible polyimide substrate, and has a circular window and two symmetrically arranged square windows in the middle. The circular window is adapted to the magnetic positioning module, and the two square windows are located on both sides of the circular window. The magnetic sheet assembly includes a first magnetic sheet and two second magnetic sheets. The first magnetic sheet is attached to the side of the ring-shaped FPC coil away from the ring shell, and the two second magnetic sheets are embedded in the two square windows and attached to the first magnetic sheet. The resonant capacitor is connected in series to the output terminal of the ring-shaped FPC coil, and the ring-shaped FPC coil is connected to the power management module through the resonant capacitor.

[0006] More preferably, the magnetic positioning module includes a positioning magnet and a positioning guide structure; the positioning magnet is embedded in the circular opening of the annular FPC coil, and the magnetic pole direction of the positioning magnet forms an opposite attraction with the corresponding magnet of the charging base; the positioning guide structure is an arc-shaped guide surface set on the edge of the annular FPC coil, and the arc-shaped guide surface is adapted to the boss structure of the charging base. The positioning guide structure and the positioning magnet work together to achieve coil center alignment.

[0007] More preferably, the multi-source sensor module includes a photoplethysmography (PPG) sensor, a motion state sensor, and a wear detection sensor; the PPG sensor is used to collect light signals, the motion state sensor is used to collect acceleration and angular velocity signals, and the wear detection sensor is used to detect wear state signals; the PPG sensor is connected to the microcontroller module via an I / O interface, the motion state sensor is connected to the microcontroller module via an I2C interface, and the wear detection sensor is connected to the microcontroller module via an I / O interface.

[0008] More preferably, the microcontroller module is configured with a dynamic correction formula for coil coupling efficiency. This dynamic correction formula for coil coupling efficiency is specifically expressed as:

[0009] ;

[0010] in, This refers to the dynamically corrected coil coupling efficiency. The reference coupling efficiency under unbiased and interference-free conditions. This is the positioning deviation influence coefficient. This represents the actual center deviation between the ring-shaped FPC coil and the charging base's transmitting coil. The equivalent diameter of the toroidal FPC coil is... The interference intensity influence coefficient. This represents the actual field strength of environmental electromagnetic interference. To preset the reference interference field strength, This is the coil resonance matching correction coefficient; the microcontroller module calculates the coupling efficiency in real time using this formula and transmits the calculation result to the power management module.

[0011] More preferably, the microcontroller module is also configured with an interference suppression weight allocation formula, which is a multi-dimensional interference collaborative suppression weight formula, specifically expressed as follows:

[0012] ;

[0013] in, For interference suppression weighting coefficients, Signal strength weighting factor, The effective signal strength acquired by the multi-source sensor module. This represents the maximum signal strength. Matching weighting factors to the coil, This is the actual resonant capacitance value of the toroidal FPC coil. The nominal resonant capacitance value of the coil is used; the microcontroller module uses the interference suppression weight coefficient calculated based on this formula to control the signal acquisition parameters of the multi-source sensor module and the resonant matching state of the wireless charging receiver module.

[0014] More preferably, the microcontroller module is also configured with a data storage priority calculation formula, which is a hierarchical storage priority formula for disconnected data, and the specific expression is:

[0015] ;

[0016] in, Prioritize data storage. This is the weighting coefficient for data timeliness. This is the normalized value of the difference between the data acquisition time and the current time. For data type weighting coefficients, The coefficients for different data types are as follows: 1.2 for data acquired by the photoplethysmography sensor, 0.8 for data acquired by the motion state sensor, and 0.5 for data acquired by the wear detection sensor. The remaining storage capacity of the information storage module. The maximum storage capacity of the information storage module is given by the formula; the microcontroller module controls the data writing order of the information storage module based on the storage priority calculated by the formula.

[0017] More preferably, the information storage module includes an SPIFlash chip and a storage control unit; the storage control unit is connected to the microcontroller module, receives storage priority data transmitted by the microcontroller module, and writes the data collected by the multi-source sensor module into the SPIFlash chip in descending order of priority; the SPIFlash chip stores data in the format of "timestamp + data type identifier + data value", and the storage control unit monitors the remaining storage capacity of the SPIFlash chip in real time and feeds back the remaining storage capacity information to the microcontroller module.

[0018] A wireless charging method for a smart ring, applied to any of the smart rings described above, includes the steps of connecting the charging base to a power source and placing the smart ring on the charging base, characterized in that it further includes the following steps:

[0019] S1: After the charging base is powered on, it enters standby mode. The power management module of the smart ring starts initialization, and the micro-control module activates the magnetic positioning module and the wireless charging receiver module.

[0020] S2: The magnetic positioning module drives the smart ring to fit against the protrusion of the charging base through the attraction between opposite poles, achieving the initial alignment of the ring FPC coil and the transmitting coil of the charging base;

[0021] S3: The microcontroller module collects the initial parameters of coil coupling through the wireless charging receiver module, combines the environmental electromagnetic interference field strength data, and calculates the dynamic coupling efficiency through the dynamic correction formula of coupling efficiency.

[0022] S4: The microcontroller module calculates the interference suppression weight coefficient based on the dynamic coupling efficiency and the multi-dimensional interference collaborative suppression weight formula. Based on the interference suppression weight coefficient, it adjusts the sampling frequency of the multi-source sensor module and the operating parameters of the resonant capacitor of the wireless charging receiver module.

[0023] S5: The wireless charging receiver module receives the alternating magnetic field energy transmitted by the transmitting coil of the charging base, and transmits the induced AC power to the power management module. The power management module rectifies, filters and regulates the AC power to charge the lithium battery.

[0024] S6: During charging, the microcontroller module calculates the data storage priority using the disconnection data hierarchical storage priority formula. The control information storage module stores the data collected by the multi-source sensor module and monitors the Bluetooth connection status in real time. When the Bluetooth connection is restored, the data is synchronized to the control terminal in order of storage priority from high to low.

[0025] In a further preferred embodiment, in step S6, the Bluetooth connection status monitoring is achieved by the microcontroller module detecting the Bluetooth signal strength. When the Bluetooth signal strength is greater than or equal to a preset threshold for 3 seconds, the Bluetooth connection is determined to be restored. During data synchronization, the microcontroller module controls the information storage module to read the data in the order of storage time from earliest to latest, and transmits the data to the control terminal through the Bluetooth chip. After receiving the data, the control terminal sends an acknowledgment signal to the microcontroller module. After receiving the acknowledgment signal, the microcontroller module controls the information storage module to delete the synchronized data.

[0026] Technical Effects: The inventive aspect of this invention lies in integrating the magnetic positioning module with the wireless charging receiver module, while simultaneously linking a multi-source sensor module, a microcontroller module, and an information storage module to form a collaborative system for charging positioning, data acquisition, and storage control. This solution addresses the problems of low coupling efficiency and data loss due to mechanical bonding in the charging positioning of smart rings in the background technology. It achieves precise coil alignment during charging, ensuring charging reliability, and stores data according to priority when the connection is lost, ensuring complete synchronization after reconnection and preventing data loss. Attached Figure Description

[0027] Figure 1 This is a block diagram of a smart ring connection according to this application;

[0028] Figure 2 This is a flowchart of a wireless charging method for a smart ring according to this application;

[0029] Figure 3 This is a structural diagram of the smart ring of this application;

[0030] Figure 4 A structural diagram of a wireless charging receiver coil;

[0031] Figure 5 This is a schematic diagram of the charging dock structure.

[0032] Figure 6 This is a side view of the electrical base structure. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0034] Existing smart rings suffer from technical problems such as reliance on mechanical bonding for charging and positioning, easy coil misalignment leading to low coupling efficiency, and lack of data storage mechanism after disconnection, making them prone to data loss.

[0035] Based on this, please refer to Figures 1-6This embodiment provides a smart ring, including a ring shell and a lithium battery, as well as a wireless charging receiver module, a magnetic positioning module, a multi-source sensor module, a microcontroller module, an information storage module, and a power management module. The wireless charging receiver module is fitted inside the ring shell, the magnetic positioning module is integrated in the middle of the wireless charging receiver module, the multi-source sensor module is embedded in the wearing surface of the ring shell, and the microcontroller module, information storage module, and power management module are integrated on the same PCB board and fixed inside the ring shell. The output end of the wireless charging receiver module is connected to the input end of the power management module, and the output end of the power management module is connected to the lithium battery, the microcontroller module, the multi-source sensor module, and the information storage module respectively. The multi-source sensor module and the information storage module are bidirectionally connected to the microcontroller module, and the magnetic positioning module is mechanically fixed to the wireless charging receiver module and achieves positioning guidance through magnetic coupling.

[0036] This solution integrates a magnetic positioning module and a wireless charging receiver module to address the issue of positioning relying on mechanical adhesion. Simultaneously, it links multiple modules for data processing and storage, resolving data loss issues caused by connection drops. Notably, the ring's outer shell is made of titanium alloy, ensuring structural strength and wearing comfort. The wireless charging receiver module, when placed against the inner side, fully receives magnetic field energy. The magnetic positioning module, integrated in the middle of the wireless charging receiver module, directly aligns with the coil, reducing additional space requirements. Multi-source sensor modules are embedded in the wearing surface to ensure accurate signal acquisition; for example, a photoplethysmography sensor, when placed close to the skin, accurately collects light signals. The microcontroller module, information storage module, and power management module are integrated on the same PCB board, simplifying wiring and reducing power consumption. The interconnectivity of each module ensures that energy is distributed from the wireless charging receiver module to each component via the power management module, and data is transmitted systematically between the multi-source sensor module, microcontroller module, and information storage module. The magnetic positioning module guides positioning through magnetic coupling, eliminating the need for an external power source.

[0037] The technical effects achieved by the above embodiments include: the magnetic positioning module enables precise coil alignment, ensuring charging coupling efficiency; multi-module linkage enables data acquisition, processing and storage, and data is not lost when disconnected; the integrated design reduces the internal space occupied by the ring, meeting the miniaturization requirements of smart rings.

[0038] Existing wireless charging receiver modules for smart rings mostly use a single coil structure, lacking magnetic permeability and resonance optimization, resulting in low coupling efficiency.

[0039] Based on this, according to the aforementioned smart ring, the wireless charging receiver module includes a ring-shaped FPC coil, a magnetic sheet assembly, and a resonant capacitor. The ring-shaped FPC coil is made of flexible polyimide substrate, with a circular window and two symmetrically arranged square windows in the center. The circular window is adapted to the magnetic positioning module, and the two square windows are located on either side of the circular window. The magnetic sheet assembly includes a first magnetic sheet and two second magnetic sheets. The first magnetic sheet is attached to the side of the ring-shaped FPC coil away from the ring's outer shell, and the two second magnetic sheets are embedded in the two square windows and attached to the first magnetic sheet. The resonant capacitor is connected in series to the output terminal of the ring-shaped FPC coil, and the ring-shaped FPC coil is connected to the power management module through the resonant capacitor. This solution optimizes the magnetic field reception and energy transmission efficiency of the wireless charging receiver module through the combination of the ring-shaped FPC coil, the magnetic sheet assembly, and the resonant capacitor.

[0040] It is worth mentioning that the ring-shaped FPC coil uses a flexible polyimide substrate, which can conform to the arc-shaped structure inside the ring shell and adapt to the shape of the ring; the central circular window provides installation space for the magnetic positioning module, realizing module integration; the square windows on both sides are used to embed the second magnetic sheets to enhance the local magnetic field concentration; the first magnetic sheet is attached to the side of the coil away from the shell, which can reduce the leakage of the magnetic field to the outside of the ring and improve the magnetic field utilization rate; the two second magnetic sheets are attached to the first magnetic sheet to form a complete magnetic path, further enhancing the magnetic field strength around the coil; the resonant capacitor is connected in series at the coil output terminal, which can adjust the resonant frequency of the coil to match the frequency of the charging base's transmitting coil, reducing energy loss.

[0041] The technical effects achieved by the above embodiments include: the flexible structure of the ring-shaped FPC coil adapts to the ring shape; the magnetic sheet group reduces magnetic field leakage and improves magnetic field utilization; the resonant capacitor achieves frequency matching, reduces energy loss, and improves the overall coupling efficiency and energy transmission efficiency of the wireless charging receiver module.

[0042] Existing smart rings rely on a single magnet for magnetic positioning, lacking a guiding structure. This makes them prone to misalignment during positioning and fails to ensure precise coil alignment.

[0043] Based on this, according to the aforementioned smart ring, the magnetic positioning module includes a positioning magnet and a positioning guide structure. The positioning magnet is embedded in the circular opening of the annular FPC coil, and the magnetic poles of the positioning magnet are attracted to the corresponding magnet on the charging base. The positioning guide structure is an arc-shaped guide surface set on the edge of the annular FPC coil, which is adapted to the protrusion structure of the charging base. The positioning guide structure and the positioning magnet work together to achieve coil center alignment. This solution achieves precise coil alignment through the collaboration of the positioning magnet and the positioning guide structure.

[0044] It is worth mentioning that the positioning magnet is embedded in the circular opening of the coil, so that its position corresponds to the center of the coil, ensuring that the magnetic force acts directly on the coil alignment direction; the magnetic pole direction is designed to be opposite to the magnet corresponding to the charging base, generating a stable attractive force to drive the ring to move towards the base protrusion; the arc-shaped guide surface on the edge of the annular FPC coil can guide the ring to slide along the guide surface when it approaches the base protrusion, avoiding displacement caused by placement angle deviation; the arc-shaped guide surface is adapted to the base protrusion to ensure a smooth guiding process. When the ring is in contact with the protrusion, the attractive force of the positioning magnet and the limiting effect of the guide surface work together to make the center of the coil accurately aligned.

[0045] The technical effects achieved by the above embodiments include: the positioning magnet provides a stable attractive force, driving the ring closer to the base; the positioning guide structure avoids offset caused by placement angle deviation; the two work together to achieve precise alignment of the coil center, solve the positioning offset problem, and improve charging reliability.

[0046] The sensor modules of existing smart rings have limited functionality, or the connection methods between the sensors and the microcontroller module are unclear, leading to technical problems such as incomplete data acquisition or unstable data transmission.

[0047] Based on this, according to the aforementioned smart ring, the multi-source sensor module includes a photoplethysmography (PPG) sensor, a motion state sensor, and a wear detection sensor. The PPG sensor is used to collect light signals, the motion state sensor is used to collect acceleration and angular velocity signals, and the wear detection sensor is used to detect wear status signals. The PPG sensor is connected to the microcontroller module via an I / O interface, the motion state sensor is connected to the microcontroller module via an I2C interface, and the wear detection sensor is connected to the microcontroller module via an I / O interface. This solution achieves comprehensive data acquisition and stable transmission through the setting of multiple types of sensors and a clear connection method.

[0048] It is worth mentioning that the photoplethysmography (PPG) sensor is used to collect light signals and can calculate health data such as heart rate and blood oxygen based on changes in light signals; the motion status sensor collects acceleration and angular velocity signals and can be used to calculate motion data such as steps and movement trajectory; the wear detection sensor detects the wearing status signal and can activate other sensors when wearing is detected, reducing power consumption in non-wearing states; the PPG sensor and the wear detection sensor are connected to the microcontroller module through an I / O interface, which is suitable for simple signal transmission and meets the signal transmission needs of both; the motion status sensor is connected to the microcontroller module through an I2C interface, which supports multiple device connections and transmits large amounts of data, making it suitable for the motion status sensor to transmit multi-dimensional data such as acceleration and angular velocity.

[0049] The technical effects achieved by the above embodiments include: multi-source sensors enable comprehensive collection of health, exercise, and wearing status data; a clear interface connection method ensures stable data transmission; and an adapter interface is selected according to the signal characteristics of the sensor to optimize data transmission efficiency and reduce power consumption.

[0050] The existing calculation of coil coupling efficiency in smart rings does not take into account the dynamic effects of positioning deviation and environmental interference, resulting in inaccurate calculation results and failing to provide a reliable basis for charging control.

[0051] Based on this, according to the aforementioned smart ring, the microcontroller module is configured with a dynamic correction formula for coil coupling efficiency. This dynamic correction formula for coil coupling efficiency is specifically expressed as follows:

[0052] ;

[0053] in, The coil coupling efficiency is dynamically corrected and is in dimensionless form. The reference coupling efficiency under unbiased and interference-free conditions is given in dimensionless form, with a value ranging from 0.7 to 0.8. The positioning deviation influence coefficient is dimensionless and ranges from 0.6 to 0.8, determined by the structural parameters of the coil. This represents the actual center deviation between the ring-shaped FPC coil and the charging base's transmitting coil, in millimeters. The equivalent diameter of the toroidal FPC coil is expressed in millimeters and is calculated from the inner and outer diameters of the coil. This is the interference intensity influence coefficient, with a dimensionless unit and a value ranging from 0.3 to 0.5, determined by the type of environmental interference. The actual field strength of environmental electromagnetic interference, expressed in volts per meter; The preset reference interference field strength is expressed in volts per meter and is set to 0.5 volts per meter. The coil resonance matching correction coefficient is dimensionless and ranges from 0.9 to 1.0. It is determined by the deviation between the actual value and the nominal value of the resonant capacitor. The microcontroller module calculates the coupling efficiency in real time using this formula and transmits the calculation results to the power management module.

[0054] The theoretical basis of this formula is the principle of electromagnetic induction. The coil coupling efficiency is inversely proportional to the square of the center deviation because as the deviation increases, the overlap area of ​​the magnetic field between the coils decreases quadratically. Simultaneously, the square of the field strength of environmental electromagnetic interference affects the stability of the magnetic field, thus affecting the coupling efficiency. The resonance matching correction coefficient is used to correct the frequency mismatch problem caused by the resonant capacitor deviation. The logical derivation process is as follows: First, determine the reference coupling efficiency under no-deviation and no-interference conditions. Then, the impact of positioning deviation on coupling efficiency is calculated. The larger the deviation, the larger the impact term, and the greater the reduction in coupling efficiency; next, the impact term of environmental disturbance on coupling efficiency is calculated. The stronger the interference, the larger the influence term, and the greater the reduction in coupling efficiency. The baseline coupling efficiency is calculated by subtracting the sum of the two influence terms and then multiplying by the resonance matching correction coefficient. The dynamically corrected coupling efficiency is obtained. This scheme achieves accurate calculation of coupling efficiency through dynamic formula correction. It is worth mentioning that the microcontroller module acquires data in real time. and Data, The result is calculated based on the feedback signal from the magnetic positioning module. Data is collected through the interference detection unit in the multi-source sensor module; the collected data is then substituted into the formula to calculate... Then The data is transmitted to the power management module, which then processes it according to the power management module's requirements. Adjust the charging current or voltage to ensure a stable charging process.

[0055] The technical effects achieved by the above embodiments include: the dynamic correction formula takes into account the influence of positioning deviation and environmental interference, and the calculation results are accurate; it provides reliable coupling efficiency data for the power management module, realizes dynamic adjustment of charging parameters, and ensures charging stability and efficiency.

[0056] The existing smart rings do not combine coupling efficiency, signal strength and coil matching status in their interference suppression, resulting in weak interference suppression measures and an inability to effectively reduce the impact of interference on data acquisition and charging.

[0057] Based on this, according to the aforementioned smart ring, the microcontroller module is also configured with an interference suppression weight allocation formula, which is a multi-dimensional interference collaborative suppression weight formula, specifically expressed as follows:

[0058] ;

[0059] in, This is the interference suppression weight coefficient, which is dimensionless and ranges from 0 to 1. The coil coupling efficiency is dynamically corrected and is in dimensionless form. The reference coupling efficiency under unbiased and interference-free conditions is given in dimensionless form. This is the signal strength weighting factor, with a dimensionless unit and a value range of 0.4 to 0.6, set according to the priority of data acquisition; The effective signal strength acquired by the multi-source sensor module is expressed in decibels and milliwatts. This represents the maximum signal strength, measured in decibels and milliwatts, and is determined by the sensor's performance parameters. This is the coil matching weighting factor, dimensionless, ranging from 0.4 to 0.6. The sum is 1; This is the actual resonant capacitance value of the toroidal FPC coil, in nanofarads. The nominal resonant capacitance of the coil is expressed in nanofarads. The microcontroller module uses the interference suppression weighting coefficient calculated by this formula to control the signal acquisition parameters of the multi-source sensor module and the resonant matching state of the wireless charging receiver module.

[0060] The theoretical basis of this formula is that the effectiveness of interference suppression is related to coupling efficiency, signal strength, and coil matching state. Higher coupling efficiency results in less interference affecting charging, allowing for greater weighting of interference suppression in data acquisition. Stronger signal strength leads to less interference affecting data, allowing for a reduction in the interference suppression weight in this dimension. Higher coil matching results in less interference affecting charging, allowing for adjustments to the focus of interference suppression. The logical derivation process is as follows: First, calculate the normalized value of the coupling efficiency. This value reflects the level of coupling efficiency relative to a reference value; then the contribution of signal strength is calculated. The closer the signal strength is to its maximum value, the larger the contribution term; then the contribution term of coil matching is calculated. The closer the actual capacitance value is to the nominal value, the larger this contribution term is; adding the two contribution terms and multiplying them by the normalized coupling efficiency value yields the interference suppression weight coefficient. , The larger the value, the smaller the current interference impact, and the interference suppression strength can be appropriately reduced; conversely, it needs to be strengthened. This scheme achieves targeted interference suppression control through an interference suppression weight allocation formula. It is worth mentioning that the microcontroller module collects data in real time. , and Data, It is calculated from the dynamic correction formula for coupling efficiency. Data is collected directly from a multi-source sensor module. Data is collected through the capacitor detection unit of the power management module; the data is then substituted into the formula to calculate... ;when When the signal is smaller, the microcontroller module increases the sampling frequency of the multi-source sensor module to enhance the anti-interference capability of signal acquisition, while adjusting the resonant capacitor parameters of the wireless charging receiver module to optimize coil matching; when... When the voltage is large, the sampling frequency should be appropriately reduced to decrease power consumption while maintaining coil matching.

[0061] The technical effects achieved by the above embodiments include: the interference suppression weight allocation formula combined with multi-dimensional parameters makes the interference suppression measures more targeted; the micro-control module dynamically adjusts parameters based on weight coefficients, optimizing power consumption while ensuring stable data acquisition and charging.

[0062] The existing smart rings' disconnection data storage does not take into account interference suppression, data timeliness, and storage capacity, resulting in unreasonable storage priorities and technical problems such as the potential loss of important data due to insufficient storage resources.

[0063] Based on this, according to the aforementioned smart ring, the microcontroller module is also configured with a data storage priority calculation formula. This formula is a hierarchical storage priority formula for disconnected data, and its specific expression is:

[0064] ;

[0065] in, This represents the data storage priority, in dimensionless form, with a value range of 0 to 1. This is the interference suppression weight coefficient, in dimensionless form; This is a weighting coefficient for data timeliness, with a dimensionless unit and a value range of 0.5 to 0.7, emphasizing the time value of the data; This is the normalized value of the difference between the data acquisition time and the current time, expressed in dimensionless units. The smaller the difference, the better. The closer to 1; This is the data type weighting coefficient, in dimensionless form, ranging from 0.3 to 0.5. The sum is 1; The coefficients are data types and are dimensionless. The coefficients for data collected by the photoplethysmography sensor are 1.2, for data collected by the motion state sensor are 0.8, and for data collected by the wear detection sensor are 0.5, and are set according to the importance of the data. The remaining storage capacity of the information storage module is expressed in megabytes. The maximum storage capacity of the information storage module is expressed in megabytes. The microcontroller module controls the data writing order of the information storage module based on the storage priority calculated by this formula.

[0066] The theoretical basis of this formula is that data storage priority should be related to interference suppression status, data timeliness, data type importance, and storage capacity. The better the interference suppression status, the higher the data reliability and the higher the priority; the newer the data and the stronger its timeliness, the higher the priority; the more important the data type, the higher the priority; and the more remaining storage capacity, the more low-priority data can be stored. The logical derivation process is as follows: First, using the interference suppression weight coefficient... Reflecting data credibility The larger the value, the less susceptible the data is to interference, and the higher its reliability; then, the combined contribution of data timeliness and type is calculated. , The larger the value, the newer the data. A larger value indicates a more important data type and a greater overall contribution; then calculate the normalized value of the storage capacity. The more remaining capacity, the larger this value; multiplying these three factors gives the data storage priority. , The larger the value, the higher the data storage priority. This solution uses a data storage priority calculation formula to achieve reasonable storage of disconnected data. It's worth mentioning that the microcontroller module acquires data in real time. , , and Data, Calculated from the interference suppression weight allocation formula, Calculated using the timestamps of the data Determined based on the type of sensor used for data acquisition. Feedback is received from the storage control unit of the information storage module; the data is substituted into the formula to calculate... Information storage module according to Data is stored in descending order of importance, and deletions are prioritized when storage capacity is insufficient. The lowest data.

[0067] The technical effects achieved by the above embodiments include: the data storage priority calculation formula takes into account multiple dimensions of factors to ensure that important and new data are stored first; avoids the loss of important data due to insufficient storage resources and ensures the integrity of disconnected data.

[0068] The existing smart ring's information storage module lacks clear storage control logic and data format, resulting in data storage chaos and low efficiency in read and delete operations.

[0069] Based on this, according to the aforementioned smart ring, the information storage module includes a SPIFlash chip and a storage control unit. The storage control unit is connected to the microcontroller module, receives storage priority data transmitted by the microcontroller module, and writes the data collected by the multi-source sensor module into the SPIFlash chip in descending order of priority. The SPIFlash chip stores data in the format of timestamp + data type identifier + data value. The storage control unit monitors the remaining storage capacity of the SPIFlash chip in real time and feeds back the remaining storage capacity information to the microcontroller module. This solution achieves orderly storage and management of data through the cooperation of the SPIFlash chip and the storage control unit. It is worth mentioning that the SPIFlash chip is non-volatile, has a large storage capacity, and fast read / write speed, making it suitable for storing disconnected data in smart rings. The storage control unit, as an intermediary between the microcontroller module and the SPIFlash chip, receives storage priority data transmitted by the microcontroller module and parses the data storage order instructions. It writes data in descending order of priority, ensuring that important data is stored first. The storage format is timestamp + data type identifier + data value. The timestamp records the data acquisition time, facilitating time-based sorting during subsequent synchronization. The data type identifier distinguishes data acquired by different sensors, facilitating classification and processing by the control end. The data value is the raw data acquired. The storage control unit monitors the remaining storage capacity of the SPIFlash chip in real time, obtains capacity information by reading the chip's status register, and feeds it back to the microcontroller module. The microcontroller module adjusts the storage strategy based on the remaining capacity.

[0070] The technical effects achieved by the above embodiments include: the SPIFlash chip meets the storage requirements of disconnected data; the storage control unit realizes orderly data writing and capacity monitoring; and the clear data format facilitates data reading, classification and synchronization, thereby improving data management efficiency.

[0071] Existing wireless charging methods for smart rings lack clear control logic for each stage of charging and fail to achieve coordination between positioning, coupling efficiency calculation, interference suppression, and data storage. This results in technical problems such as unstable charging process and ineffective management of disconnected data.

[0072] Based on this, a wireless charging method for a smart ring, applied to any of the smart rings described above, includes the steps of connecting the charging base to a power source and placing the smart ring on the charging base, and further includes the following steps:

[0073] S1: After the charging base is powered on, it enters standby mode. The power management module of the smart ring starts initialization, and the micro-control module activates the magnetic positioning module and the wireless charging receiver module.

[0074] S2: The magnetic positioning module drives the smart ring to fit against the protrusion of the charging base through the attraction between opposite poles, achieving the initial alignment of the ring FPC coil and the transmitting coil of the charging base;

[0075] S3: The microcontroller module collects the initial parameters of coil coupling through the wireless charging receiver module, combines the environmental electromagnetic interference field strength data, and calculates the dynamic coupling efficiency through the dynamic correction formula of coupling efficiency.

[0076] S4: The microcontroller module calculates the interference suppression weight coefficient based on the dynamic coupling efficiency and the multi-dimensional interference collaborative suppression weight formula. Based on the interference suppression weight coefficient, it adjusts the sampling frequency of the multi-source sensor module and the operating parameters of the resonant capacitor of the wireless charging receiver module.

[0077] S5: The wireless charging receiver module receives the alternating magnetic field energy transmitted by the transmitting coil of the charging base, and transmits the induced AC power to the power management module. The power management module rectifies, filters and regulates the AC power to charge the lithium battery.

[0078] S6: During charging, the microcontroller module calculates the data storage priority using the disconnection data hierarchical storage priority formula. The control information storage module stores the data collected by the multi-source sensor module and monitors the Bluetooth connection status in real time. When the Bluetooth connection is restored, the data is synchronized to the control terminal in order of storage priority from high to low.

[0079] This scheme achieves coordinated charging positioning, coupling efficiency calculation, interference suppression, energy transfer, and data storage through step-by-step control. Notably, in S1, the power management module initialization includes detecting the current lithium battery level and initializing the power supply parameters of each module. The microcontroller module activates the magnetic positioning module and the wireless charging receiver module, preparing for subsequent positioning and energy reception. In S2, the magnetic positioning module's attraction between opposite poles drives the ring to adhere to the base protrusion, initially aligning the coil and reducing subsequent adjustment steps. In S3, the microcontroller module collects initial coupling parameters, including the coil's induced voltage and current, and combines this with environmental interference field strength data, substituting them into the dynamic correction formula for coupling efficiency calculation. This provides a basis for interference suppression; the microcontroller module in S4, based on... Adjust the sampling frequency, such as The sampling frequency is increased by 1 hour, and the resonant capacitor parameters are adjusted, such as changing the capacitor value, to optimize coil matching. In S5, the wireless charging receiver module generates AC power, the rectifier circuit of the power management module converts the AC power to DC power, the filter circuit removes the ripple in the DC power, and the voltage regulator circuit stabilizes the voltage at the charging voltage of the lithium battery to ensure charging safety. In S6, the microcontroller module monitors the Bluetooth signal strength in real time, determines the connection status, and presses a button when the connection is lost. Store data and synchronize it according to priority when reconnecting to ensure data integrity.

[0080] The technical effects achieved by the above embodiments include: step-by-step control enables the orderly execution of each stage of charging; the coordination of positioning, coupling efficiency calculation, interference suppression and data storage improves charging stability and data integrity; and the smooth connection between each step ensures that the charging process is efficient and reliable.

[0081] In existing wireless charging methods for smart rings, the conditions for Bluetooth connection recovery are unclear, and the logic for data synchronization and deletion is ambiguous, leading to technical problems such as untimely data synchronization or duplicate storage.

[0082] Based on this, according to the wireless charging method of the smart ring described above, in step S6, the Bluetooth connection status monitoring is achieved by detecting the Bluetooth signal strength through the microcontroller module. When the Bluetooth signal strength is greater than or equal to a preset threshold for 3 seconds, it is determined that the Bluetooth connection has been restored. During data synchronization, the microcontroller module controls the information storage module to read the data in the order of storage time from earliest to latest, and transmits the data to the control terminal through the Bluetooth chip. After receiving the data, the control terminal sends an acknowledgment signal to the microcontroller module. After receiving the acknowledgment signal, the microcontroller module controls the information storage module to delete the synchronized data.

[0083] The solution clearly defines the conditions for restoring Bluetooth connections and the logic for data synchronization and deletion, ensuring timely and non-duplicative data synchronization.

[0084] It is worth mentioning that the preset threshold for Bluetooth signal strength is set according to the communication performance of the Bluetooth chip, and continuous detection for 3 seconds can avoid misjudgment caused by signal fluctuations; during data synchronization, data is read from earliest to latest according to storage time to ensure that the control end receives data in chronological order, which facilitates the continuous processing of data; the control end sends an acknowledgment signal to ensure that the data has been successfully received, and to prevent the data from being deleted before synchronization is completed; after the microcontroller receives the acknowledgment signal, it deletes the synchronized data, releases storage capacity, and makes room for subsequent data storage.

[0085] The technical effects achieved by the above embodiments include: clear Bluetooth connection recovery conditions to avoid misjudgment; orderly data reading and confirmation deletion logic to ensure timely and complete data synchronization, and to prevent duplicate storage, thereby optimizing the utilization of storage resources.

[0086] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments that can be applied to other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A smart ring comprising a ring housing and a lithium battery, characterized in that, The wireless charging receiving module is attached to the inside of the ring shell, the magnetic attraction positioning module is integrated in the middle of the wireless charging receiving module, the multi-source sensor module is embedded on the wearing surface of the ring shell, and the micro control module, the information storage module and the power management module are integrated on the same PCB and fixed in the ring shell. The micro control module is further configured with an interference suppression weight distribution formula, and the interference suppression weight distribution formula is a multi-dimensional interference cooperative suppression weight formula. ; Wherein, is the dynamic corrected coil coupling efficiency, is the reference coupling efficiency without bias and interference, is the positioning bias influence coefficient, is the actual center deviation amount of the annular FPC coil and the charging base transmitting coil, is the equivalent diameter of the annular FPC coil, is the interference intensity influence coefficient, is the actual field strength of the environmental electromagnetic interference, is the preset reference interference field strength, is the coil resonance matching correction coefficient; the micro control module calculates the coupling efficiency in real time through the formula, and transmits the calculation result to the power management module.

2. The smart ring of claim 1, wherein, The micro control module is further configured with a data storage priority calculation formula, and the data storage priority calculation formula is a disconnected data layered storage priority formula.

3. The smart ring of claim 1, wherein, The micro control module is further configured with an interference suppression weight distribution formula, and the interference suppression weight distribution formula is a multi-dimensional interference cooperative suppression weight formula. ; wherein, is the interference suppression weight coefficient, is the signal strength weight factor, is the effective signal strength collected by the multi-source sensor module, is the maximum signal strength, is the coil matching weight factor, is the actual resonant capacitance value of the annular FPC coil, is the nominal resonant capacitance value of the coil; the micro control module controls the signal collection parameters of the multi-source sensor module and the resonant matching state of the wireless charging receiving module based on the interference suppression weight coefficient calculated by the formula.

4. The smart ring of claim 3, wherein, The micro control module is further configured with a data storage priority calculation formula, and the data storage priority calculation formula is a disconnected data layered storage priority formula. The micro control module is further configured with an interference suppression weight distribution formula, and the interference suppression weight distribution formula is a multi-dimensional interference cooperative suppression weight formula. The micro control module is further configured with a data storage priority calculation formula, and the data storage priority calculation formula is a disconnected data layered storage priority formula. The micro control module is further configured with an interference suppression weight distribution formula, and the interference suppression weight distribution formula is a multi-dimensional interference cooperative suppression weight formula. The micro control module is further configured with a data storage priority calculation formula, and the data storage priority calculation formula is a disconnected data layered storage priority formula. ; wherein, is a data storage priority, is a data timeliness weight coefficient, is a data collection time and current time difference normalized value, is a data type weight coefficient, is a data type coefficient, the corresponding coefficient of the data collected by the photoplethysmography sensor is 1.2, the corresponding coefficient of the data collected by the motion state sensor is 0.8, and the corresponding coefficient of the data collected by the wearing detection sensor is 0.5, is a remaining storage capacity of the information storage module, is a maximum storage capacity of the information storage module; the micro control module controls the data writing order of the information storage module according to the storage priority calculated by the formula.

5. The smart ring of claim 4, wherein, The information storage module comprises an SPIFlash chip and a storage control unit; the storage control unit is connected with the micro control module, the storage control unit receives the storage priority data transmitted by the micro control module, and writes the data collected by the multi-source sensor module into the SPIFlash chip in the order from high to low according to the priority; the SPIFlash chip stores the data in the format of "time stamp + data type identification + data value", and the storage control unit monitors the remaining storage capacity of the SPIFlash chip in real time and feeds back the remaining storage capacity information to the micro control module.

6. A wireless charging method of a smart ring, using the smart ring of claim 5, comprising the steps of turning on the power of the charging base, and placing the smart ring on the charging base, characterized in that, Further comprising the following steps: S1: after the charging base is powered on, it enters a standby state, the power management module of the smart ring is started and initialized, and the micro control module activates the magnetic positioning module and the wireless charging receiving module; S2: the magnetic positioning module drives the smart ring to be attached to the convex post of the charging base through the opposite attraction effect, so as to realize the preliminary alignment of the annular FPC coil and the transmitting coil of the charging base; S3: the micro control module collects the initial parameters of the coil coupling through the wireless charging receiving module, combines the environmental electromagnetic interference field strength data, and calculates the dynamic coupling efficiency through the coupling efficiency dynamic correction formula; S4: the micro control module calculates the interference suppression weight coefficient through the multi-dimensional interference suppression weight formula based on the dynamic coupling efficiency, adjusts the sampling frequency of the multi-source sensor module and the resonance capacitance working parameter of the wireless charging receiving module according to the interference suppression weight coefficient; S5: the wireless charging receiving module receives the alternating magnetic field energy transmitted by the transmitting coil of the charging base, transmits the alternating current generated by induction to the power management module, and the power management module rectifies, filters and stabilizes the alternating current to charge the lithium battery; S6: during the charging process, the micro control module calculates the data storage priority through the disconnected data hierarchical storage priority formula, controls the information storage module to store the data collected by the multi-source sensor module, and simultaneously monitors the Bluetooth connection state in real time; when the Bluetooth connection is restored, the data is synchronized to the control end in the order from high to low according to the storage priority. 7.The wireless charging method of the smart ring of claim 6, wherein, In step S6, the Bluetooth connection state monitoring is realized by detecting the Bluetooth signal strength through the micro control module; when the Bluetooth signal strength is greater than or equal to the preset threshold for 3 seconds, it is determined that the Bluetooth connection is restored; when the data is synchronized, the micro control module controls the information storage module to read the data in the order from early to late according to the storage time, transmits the data to the control end through the Bluetooth chip, the control end sends an acknowledgement signal to the micro control module after receiving the data, and the micro control module controls the information storage module to delete the synchronized data after receiving the acknowledgement signal.

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