Dual-mode conductive fabric, wireless wearable network system, method and related devices

Abstract

The application provides a dual-mode conductive fabric, a wireless wearable network system, a method and related equipment, the dual-mode conductive fabric comprising: a fabric base; a dual-mode conductive structure comprising a near-field wireless energy transmission structure and a near-field high-frequency wireless communication structure integrated on the fabric base; wherein the near-field wireless energy transmission structure is used for wirelessly receiving energy from an external terminal device through electromagnetic coupling at a low-frequency band and transmitting the energy along the fabric base; and the near-field high-frequency wireless communication structure is used for guiding a communication signal to be directionally propagated along the fabric base at a high-frequency band. Through the technical scheme provided by the application, the near-field wireless energy transmission structure and the near-field high-frequency wireless communication structure are physically integrated as a whole and respectively work at different frequency bands to realize parallel and collaborative work of energy transmission and data communication, thereby realizing the dual functions of efficient wireless power supply and high-speed data communication.

Description

Technical Field

[0001] This invention relates to the field of wearable device technology, and in particular to a dual-mode conductive fabric, a wireless wearable network system, a method, and related equipment. Background Technology

[0002] With the development of wearable electronic devices, Wireless Body Area Networks (WBANs) are gradually becoming an important means of human health monitoring. WBANs can collect various physiological signals from the human body in real time, such as electrocardiograms (ECG) and photoplethysmograms (PPG), and are widely used in medical diagnosis, rehabilitation care, and motion monitoring. However, traditional WBAN devices typically rely on bulky batteries with limited battery life, resulting in bulky devices that are inconvenient to wear and difficult to use for extended periods. Furthermore, frequent battery replacements increase device maintenance costs.

[0003] To address these issues, researchers have proposed various wireless power supply technologies in recent years, including near-field communication and far-field wireless power supply. However, existing wireless power supply solutions typically suffer from the following problems: While NFC-based wireless power supply technologies (such as the 13.56 MHz magnetic induction coupling method) can achieve efficient wireless power transmission, their data transmission rate is low (usually less than several hundred kbps), which cannot meet the needs of multi-node, high-speed data transmission.

[0004] While Bluetooth Low Energy (BLE) wireless communication technology offers high data transmission rates and low latency, it typically consumes a significant amount of power, making efficient wireless power supply difficult. Existing wireless power supply technologies cannot be effectively combined with high-data-rate communication technologies, resulting in limitations in user experience and monitoring accuracy. Traditional wireless communication methods have a large coverage area, posing risks to information security, and are susceptible to signal attenuation by human tissue, leading to insufficient communication reliability.

[0005] Currently, some studies have proposed using conductive fabrics to construct near-field communication channels in order to improve wireless power supply efficiency or data communication performance. However, most existing conductive fabric structures are limited to a single frequency band, making it difficult to simultaneously achieve efficient wireless power supply and high-speed wireless communication functions. Summary of the Invention

[0006] This invention provides a dual-mode conductive fabric, a wireless wearable network system, a method, and related devices to address the deficiencies in the prior art.

[0007] This invention provides a dual-mode conductive fabric, comprising: Fabric base; A dual-mode conductive structure includes a near-field wireless power transmission structure and a near-field high-frequency wireless communication structure integrated on the fabric substrate; The near-field wireless power transmission structure is used to wirelessly receive energy from an external terminal device via electromagnetic coupling in the low-frequency band and transmit energy along the fabric substrate. The near-field high-frequency wireless communication structure is used to guide communication signals to propagate directionally along the fabric substrate in the high-frequency band.

[0008] According to a dual-mode conductive fabric provided by the present invention, the near-field wireless power transmission structure includes a coil unit; The coil unit covers the target area of ​​the fabric substrate to enable wireless energy reception and transmission along the fabric substrate when an external terminal device is near any location on the fabric substrate.

[0009] According to the present invention, a dual-mode conductive fabric is provided, wherein the near-field high-frequency wireless communication structure includes a periodic pattern formed by an artificial surface plasmon structure, the periodic pattern being integrated on the surface of the fabric substrate, and the geometric parameters of the artificial surface plasmon structure being configured to support the propagation of high-frequency electromagnetic waves in a surface plasmon mode.

[0010] The present invention also provides a wireless wearable network system, comprising: The dual-mode conductive fabric as described in any of the preceding claims is integrated into clothing to form the body domain transmission portion of a wireless wearable network. At least one passive wearable node is coupled to the dual-mode conductive fabric. The passive wearable node includes a functional module and a wireless communication module. The functional module is used to perform at least one function among data acquisition, state perception, human-machine interaction, or actuator control. The wireless communication module is coupled to a near-field high-frequency wireless communication structure on the dual-mode conductive fabric and is used to transmit the data generated by the functional module in the form of a high-frequency communication signal through the near-field high-frequency wireless communication structure. An external terminal device is used to transmit wireless energy, wirelessly power the passive wearable node through the near-field wireless energy transmission structure on the dual-mode conductive fabric, receive high-frequency communication signals from the passive wearable node through the near-field high-frequency wireless communication structure, and perform information aggregation, fusion, and analysis on the high-frequency communication signals.

[0011] According to the present invention, a wireless wearable network system is provided, wherein the functional modules include at least one of the following: human-computer interaction device, physiological signal acquisition sensor, environmental sensor, chemical sensor, stress sensor, acoustic sensor, optical sensor, electromagnetic sensor, gas sensor, inertial measurement unit, tactile feedback actuator, display unit, and identification tag; The passive wearable node also includes a rectifier circuit and a voltage regulation circuit, which are used to rectify and regulate the energy sensed by the near-field wireless power transmission structure in order to power the passive wearable node.

[0012] According to the present invention, a wireless wearable network system includes multiple passive wearable nodes, which perform parallel energy distribution and multiplexed transmission of high-frequency communication signals through the dual-mode conductive fabric.

[0013] The present invention also provides a communication method for a wireless wearable network system, applied to any of the aforementioned wireless wearable network systems, the method comprising: Through the passive wearable node in the wireless wearable network system, data acquisition, state perception or actuator control operations are performed, and the generated data is converted into high-frequency communication signals, which are then injected into the dual-mode conductive fabric of the wireless wearable network system. The dual-mode conductive fabric receives low-frequency wireless energy from external terminal devices and transmits the low-frequency wireless energy to the passive wearable node, while the high-frequency communication signal is directionally propagated along the surface of the fabric substrate to the external terminal device of the wireless wearable network system. The external terminal device collects, fuses, and analyzes the high-frequency communication signals, and incorporates low-frequency wireless energy into the near-field wireless energy transmission structure on the dual-mode conductive fabric, thereby powering the passive wearable node through the dual-mode conductive fabric.

[0014] The present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the wireless wearable network system communication method as described above.

[0015] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the wireless wearable network system communication method as described above.

[0016] The present invention also provides a computer program product, including a computer program that, when executed by a processor, implements the wireless wearable network system communication method as described above.

[0017] This invention provides a dual-mode conductive fabric, a wireless wearable network system, a method, and related devices. The dual-mode conductive fabric includes a fabric substrate and a dual-mode conductive structure. The dual-mode conductive structure includes a near-field wireless power transmission structure and a near-field high-frequency wireless communication structure integrated on the fabric substrate. The near-field wireless power transmission structure wirelessly receives energy from an external terminal device via electromagnetic coupling in the low-frequency band and transmits the energy along the fabric substrate. The near-field high-frequency wireless communication structure guides the communication signal to propagate directionally along the fabric substrate in the high-frequency band. The near-field wireless power transmission structure can wirelessly receive energy from an external terminal device via electromagnetic coupling in the low-frequency band, thereby realizing the power supply function. The near-field high-frequency wireless communication structure guides the communication signal to propagate directionally along the fabric substrate in the high-frequency band. The near-field wireless power transmission structure and the near-field high-frequency wireless communication structure are physically integrated and operate in different frequency bands to achieve parallel and coordinated operation of power transmission and data communication, realizing the dual functions of efficient wireless power supply and high-speed data communication. It also has high security and stability, enabling the wireless wearable network system equipped with the dual-mode conductive fabric to support long-term continuous human-computer interaction or high-precision physiological signal monitoring. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the dual-mode conductive fabric provided by the present invention.

[0020] Figure 2 This is a schematic diagram of the near-field wireless power transmission structure and the near-field high-frequency wireless communication structure provided by the present invention.

[0021] Figure 3 This is a comparative schematic diagram of the presence and absence of dual-mode conductive fabric provided by the present invention.

[0022] Figure 4 This is a schematic diagram of the wireless wearable network system provided by the present invention.

[0023] Figure 5 This is one of the application diagrams of the wireless wearable network system provided by the present invention.

[0024] Figure 6 This is the second application diagram of the wireless wearable network system provided by the present invention.

[0025] Figure 7 This is the third application diagram of the wireless wearable network system provided by the present invention.

[0026] Figure 8 This is a flowchart illustrating the communication method of the wireless wearable network system provided by the present invention.

[0027] Figure 9 This is an experimental diagram of the application of the dual-mode conductive fabric provided by the present invention.

[0028] Figure 10 This is an application experiment diagram of the wireless wearable network system provided by the present invention.

[0029] Figure 11 This is a schematic diagram of the verification experiment results of the wireless wearable network system provided by the present invention.

[0030] Figure 12 This is a schematic diagram of a measurement using a wireless wearable network system provided by the present invention.

[0031] Figure 13 This is a schematic diagram of the structure of the electronic device provided by the present invention.

[0032] Figure label: 1: Dual-mode conductive fabric; 11: Fabric substrate; 12: Near-field wireless power transmission structure; 13: Near-field high-frequency wireless communication structure; 2: Passive wearable node; 3: External terminal device; 4: Clothing; 5: Adhesive; 6: Human body; a: Surface wave; b: Magnetic coupling. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0034] The user data involved in this application (including but not limited to data used for analysis, stored data, and displayed data) are all information and data authorized by the user or fully authorized by all parties. The collection, use and processing of the relevant data must comply with the relevant laws, regulations and standards of the relevant countries and regions, and corresponding operation portals are provided for users to choose to authorize or refuse.

[0035] Figure 1 This is a schematic diagram illustrating a dual-mode conductive fabric according to an exemplary embodiment. Figure 1 As shown, in an exemplary embodiment, the dual-mode conductive fabric includes: Fabric base 11; A dual-mode conductive structure includes a near-field wireless power transmission structure 12 and a near-field high-frequency wireless communication structure 13 integrated on the fabric substrate; The near-field wireless power transmission structure is used to wirelessly receive energy from an external terminal device via electromagnetic coupling in the low-frequency band and transmit energy along the fabric substrate. The near-field high-frequency wireless communication structure is used to guide communication signals to propagate directionally along the fabric substrate in the high-frequency band.

[0036] In this embodiment of the invention, the fabric substrate is a flexible textile material matrix that supports a dual-mode conductive structure made of conductive material. Through weaving, knitting or non-woven structures, it provides space for the conductive material to attach or interweave.

[0037] The dual-mode conductive structure includes a near-field wireless power transfer structure and a near-field high-frequency wireless communication structure. These two structures are embedded in a fabric substrate. Specifically, the near-field wireless power transfer structure and the near-field high-frequency wireless communication structure can be implemented using methods such as... Figure 1 As shown, it is embedded on both sides or the same side of the fabric base.

[0038] The near-field wireless power transfer structure can wirelessly receive energy from external terminal devices via electromagnetic coupling in the low-frequency band, thereby achieving power supply functionality. The near-field high-frequency wireless communication structure guides the communication signal to propagate directionally along the fabric substrate in the high-frequency band. The near-field wireless power transfer structure and the near-field high-frequency wireless communication structure are physically integrated and operate in different frequency bands to achieve parallel and coordinated operation of power transfer and data communication. Furthermore, the power transfer and data communication modes can operate individually or simultaneously. Moreover, the dual-mode conductive fabric covers multiple bands spanning orders of magnitude from MHz (NFC power transfer) to GHz (Wi-Fi / Bluetooth data communication).

[0039] In this embodiment of the invention, although the near-field wireless power transfer structure and the near-field high-frequency wireless communication structure operate in different frequency bands, they coexist on the fabric substrate without interfering with each other. The near-field wireless power transfer structure implements an energy coupling structure in the 13.56 MHz band, and the near-field high-frequency wireless communication structure implements a signal transmission channel in the 2.4 GHz band. The two are spatially staggered and have no spectral overlap, ensuring parallel operation capability. At the same time, the flexibility, breathability, and close-fitting nature of the conductive fabric itself remain unchanged, ensuring comfort and sustainability in practical applications.

[0040] In an exemplary embodiment provided by the present invention, the near-field wireless power transfer structure includes a coil unit; The coil unit covers the target area of ​​the fabric substrate to enable wireless energy reception and transmission along the fabric substrate when an external terminal device is near any location on the fabric substrate.

[0041] In this embodiment of the invention, since most traditional flexible sensors or wearable devices rely on battery power, and batteries bring problems such as heavy weight, high rigidity, poor safety, and short service life. To solve this problem, this invention achieves wireless power supply through a near-field wireless power transmission structure.

[0042] like Figure 2 The two figures on the right show multi-turn coil units, or NFC (Near Field Communication) coil arrays, constructed within a fabric substrate. These coils operate at a frequency of 13.56 MHz, the mainstream NFC communication frequency band. They are woven from highly conductive silver-plated fibers and arranged in a two-dimensional array on the fabric substrate, enabling efficient electromagnetic induction coupling when an NFC-enabled external terminal device (such as a smartphone) is brought near.

[0043] With an external terminal device providing 10 mW output power, the NFC coil in the fabric substrate can stably receive energy within a 30 mm working distance. Furthermore, to address the short sensing distance, the coil unit in this embodiment covers the target area of ​​the fabric substrate, employing a large-area distributed coil array design. This ensures that the user can activate the localized power supply function by placing the external terminal device near any area of ​​the dual-mode conductive fabric, thus eliminating the need for specific alignment.

[0044] Specifically, when a user's external terminal device supporting 13.56 MHz NFC functionality approaches the dual-mode conductive fabric, a pre-deployed large-area coil array begins magnetic induction coupling with the external terminal device. During this process, the NFC transmitter built into the external terminal device actively radiates energy at a standard 13.56 MHz carrier frequency. The coil array senses and receives this energy, forming a local magnetic field coupling, thereby achieving contactless energy transfer from the external terminal device to the near-field wireless power transfer structure, thus realizing wireless charging functionality.

[0045] In an exemplary embodiment provided by the present invention, the near-field high-frequency wireless communication structure includes a periodic pattern formed by an artificial surface plasmon structure, the periodic pattern being integrated on the surface of the fabric substrate, and the geometric parameters of the artificial surface plasmon structure being configured to support the propagation of high-frequency electromagnetic waves in a surface plasmon mode.

[0046] In this embodiment of the invention, to achieve real-time and stable transmission of large amounts of physiological information, a near-field high-frequency wireless communication structure is configured in a fabric substrate. This near-field high-frequency wireless communication structure consists of a periodic pattern formed by an artificial surface plasmon structure. An artificial surface plasmon structure is an artificially designed micro / nano structure that can excite and confine electromagnetic waves at specific frequencies, achieving a similar effect to surface plasmons, but with stronger field localization capabilities and tunability. The artificial surface plasmon structure is formed by etching periodic patterns (such as grooves, holes, or protrusions) onto the surface of a metal or dielectric material. When illuminated, the structure interacts with the light waves, exciting electromagnetic modes that propagate along the surface, breaking the diffraction limit of light and compressing the light field into a very small space, thereby greatly enhancing the interaction between light and matter. The artificial surface plasmon structure can be constructed in a fabric substrate using low-temperature compatible processes such as embroidery and electroplating.

[0047] In this embodiment of the invention, the artificial surface plasmon structure employs a special spoof-surface plasmon (SSP) waveguide structure to guide and confine the propagation path of wireless signals in the Bluetooth band (2.4 GHz). The spoof-SSP waveguide is a subwavelength-scale metallic structure whose main function is to confine electromagnetic waves diffused in free space to propagate within the waveguide plane, thereby reducing signal loss and interference in complex fabric paths. Figure 2 As shown in the two figures on the left, a "comb-shaped groove array" structure is used, with the SSP waveguide located on the surface of the conductive fabric, reaching lengths of tens of centimeters or more. In the 2.4 GHz band, this structure exhibits a reflection coefficient better than -20 dB and a power transmission efficiency of up to 40%, effectively supporting the long-distance propagation of Bluetooth Low Energy (BLE) communication signals from sensor nodes to Bluetooth modules.

[0048] Specifically, traditional Bluetooth signals are prone to signal attenuation and multipath reflection when propagating in free space, making it difficult to guarantee the stability and effectiveness of signal transmission, especially in complex wearable environments. To address this, the embodiments of this invention introduce a near-field high-frequency wireless communication structure based on a surface plasmon resonance structure. This structure draws on the strong confinement characteristics of metal surface plasmon waves at subwavelength scales, but achieves similar localized waveguide effects in the microwave band (e.g., 2.4 GHz) through structures such as periodic slotting.

[0049] The near-field high-frequency wireless communication structure is composed of periodically embroidered or printed metallic patterns, the patterns being... Figure 2 The "comb-like" slots in the two images on the left have a spacing and width that match the operating requirements of waveguides in the 2.4 GHz band. For example... Figure 3 The simulation results of the magnetic field distribution shown in the left figure indicate that, in the absence of conductive fabric, the wireless signal propagates through the air, exhibiting a relatively low risk of leakage. Figure 3 As shown in the right figure, when a Bluetooth module injects a signal into the waveguide's initiating end in the presence of conductive fabric, the electromagnetic wave is confined within the guide rail and transmitted along the surface of the fabric base. Compared to free-space propagation, this results in less energy leakage and a more controllable path, significantly improving signal stability and anti-interference capabilities. Because the waveguide is designed to cover the entire garment, the signal can precisely reach other nodes along the fabric surface without needing to hop through the air. This directional transmission mechanism enables signal quality and speed far exceeding those of traditional Bluetooth, even under low-power transmission conditions.

[0050] Specifically, the fabric pattern of the near-field wireless power transmission structure and the near-field high-frequency wireless communication structure can be a solid filling, corresponding to a three-layer structure embedded on both sides of the fabric base, or it can be a hollow structure, corresponding to a planar structure embedded on the same side of the fabric base.

[0051] The technical solution provided by this invention applies dual-mode conductive fabric to wearable devices, enabling the real-time, parallel transmission of physiological signals (such as pulse waves and ECG) generated by multiple distributed sensing nodes to external terminal devices (mobile phones) or server platforms via Bluetooth channels, thus completing the collection, uploading, and processing of health data. Simultaneously, the introduction of SSP waveguides significantly reduces the loss and path uncertainty of wireless signals during propagation in the conductive fabric, providing technical support for high data rates and multi-node collaborative transmission.

[0052] Figure 4 This is a schematic diagram illustrating a wireless wearable network system according to an exemplary embodiment. Figure 4 As shown, in an exemplary embodiment, the wireless wearable network system includes: The dual-mode conductive fabric described in any of the preceding claims is integrated into clothing 4 to form the body domain transmission portion of a wireless wearable network. At least one passive wearable node 2, the passive wearable node being coupled to the dual-mode conductive fabric, the passive wearable node comprising: a functional module and a wireless communication module, the functional module being used to perform at least one function among data acquisition, state perception, human-machine interaction, or actuator control, the wireless communication module being coupled to a near-field high-frequency wireless communication structure on the dual-mode conductive fabric, and being used to transmit the data generated by the functional module in the form of a high-frequency communication signal through the near-field high-frequency wireless communication structure; External terminal device 3 is used to transmit wireless energy, wirelessly power the passive wearable node through the near-field wireless energy transmission structure on the dual-mode conductive fabric, receive high-frequency communication signals from the passive wearable node through the near-field high-frequency wireless communication structure, and perform information aggregation, fusion, and analysis on the high-frequency communication signals.

[0053] In this embodiment of the invention, a dual-mode conductive fabric is integrated into clothing using an adhesive 5. As mentioned earlier, the dual-mode conductive fabric has wireless charging and signal transmission capabilities. By coupling a passive wearable node with the dual-mode conductive fabric, the dual-mode conductive fabric can power the passive wearable node and transmit signals.

[0054] When an external terminal device is brought close to clothing, it emits wireless energy. The coil array in the dual-mode conductive fabric senses and receives this energy, forming a local magnetic field coupling b. This enables contactless energy transfer from the external terminal device to the near-field wireless energy transmission structure, thereby achieving wireless charging for passive wearable nodes.

[0055] A wireless wearable network system includes at least one passive wearable node, which is a miniature intelligent unit with specific sensing, computing, or communication functions. A passive wearable node includes a wireless communication module and a functional module. The functional module supports at least one function among data acquisition, status perception, human-computer interaction, or actuator control, such as monitoring health parameters of multiple body regions of the user, such as the chest, arms, and waist. The wireless communication module uses the standard BLE (Bluetooth Low Energy) communication protocol to transmit data generated by the functional module in the form of high-frequency communication signals.

[0056] Different passive wearable nodes have a good address differentiation and synchronization mechanism, and multiple channel data can be uniformly managed and stored on a single mobile terminal or cloud platform. If there are multiple passive wearable nodes, each passive wearable node can obtain power and synchronization signal channels through a unified dual-mode conductive fabric.

[0057] In this embodiment of the invention, the overall implementation architecture of the wireless wearable network system is as follows: Figure 5 , 6 As shown in Figure 7, the smart terminal serves as the external terminal device, and the sensors serve as functional modules. When the system is running, each sensor 6, which is attached to the human body, is activated and operates using NFC power provided by the smart terminal. It then transmits the collected physiological signals (such as ECG, body temperature, and pulse waves) to the waveguide (i.e., the near-field high-frequency wireless communication structure) via the communication module. The waveguide then transmits the signals at high speed along the fabric path to the external terminal device or cloud server, forming a closed-loop data sensing and transmission system. The entire process requires no battery support; energy and data are wirelessly, continuously, and efficiently connected through the dual-mode conductive fabric.

[0058] In this embodiment of the invention, the functional module can be flexibly packaged to ensure stable adhesion to the skin and maintain good contact and signal quality during high-dynamic activities, making it suitable for complex application scenarios such as sports and sleep monitoring.

[0059] In an exemplary embodiment provided by the present invention, the functional module includes at least one of the following: human-computer interaction device, physiological signal acquisition sensor, environmental sensor, chemical sensor, stress sensor, acoustic sensor, optical sensor, electromagnetic sensor, gas sensor, inertial measurement unit, tactile feedback actuator, display unit, and identity recognition tag; The passive wearable node also includes a rectifier circuit and a voltage regulation circuit, which are used to rectify and regulate the energy sensed by the near-field wireless power transmission structure in order to power the passive wearable node.

[0060] In this embodiment of the invention, the functional module includes at least one of the following: a sensing unit, an interaction unit, a feedback unit, a recognition unit, an output unit, and an execution unit; wherein, the sensing unit is used to collect at least one of the following parameters: optical parameters, acoustic parameters, electromagnetic parameters, thermal parameters, mechanical parameters, electrophysiological signals, biochemical parameters, environmental gas parameters, radiation parameters, position parameters, distance parameters, fluid parameters, image parameters, tactile parameters, or curvature parameters.

[0061] Passive wearable nodes can be worn, attached to, or integrated into any part of the human body, such as the wrist, head, torso, hands, feet, neck, or skin surface. Passive wearable nodes can be integrated into various electronic devices, including but not limited to watches, bracelets, glasses, helmets, headphones, clothing, patches, rings, gloves, shoes, socks, necklaces, protective gear, or exoskeletons.

[0062] The passive wearable node includes a rectifier circuit and a voltage regulator circuit. The rectifier circuit rectifies the energy sensed by the near-field wireless power transmission structure, converting alternating current (AC) into direct current (DC). The voltage regulator circuit stabilizes the rectified DC voltage, ensuring that the regulated voltage is suitable for the passive wearable node, thus powering it. Through the processing of the rectifier and voltage regulator circuits, a stable output voltage is provided to power multiple core modules, including functional modules and wireless communication modules, enabling continuous measurement of physiological parameters such as blood pressure and electrocardiogram. By completely eliminating the need for batteries, the safety and convenience of the wearable system are significantly improved.

[0063] In an exemplary embodiment provided by the present invention, the wireless wearable network system includes multiple passive wearable nodes, which perform parallel energy distribution and multiplexed transmission of high-frequency communication signals through the dual-mode conductive fabric.

[0064] In this embodiment of the invention, if there are multiple passive wearable nodes, each passive wearable node uses a broadcast mechanism or connection mechanism of a high-frequency communication signal protocol to occupy the channel using a preset address and time window, thereby achieving non-collision parallel transmission of multiple data streams and parallel energy distribution through a dual-mode conductive fabric to continuously power each passive wearable node.

[0065] In this embodiment of the invention, a large-area 13.56MHz near-field wireless power transmission structure constructed from dual-mode conductive fabric is created using a flexible coil array woven from highly conductive yarns. This meets the requirements for NFC power coupling and enables efficient power reception at any location within the clothing. This solves the problems of low local power supply efficiency and position sensitivity associated with traditional small coils. The SSP waveguide structure integrated on the fabric surface forms a millimeter-level periodic comb structure on the flexible fabric, achieving strong directional transmission of 2.4GHz BLE signals, specifically as follows... Figure 5 As shown in surface wave a, this significantly reduces signal radiation and loss in the human body environment, improving transmission rate and communication stability. It achieves spatial integration of near-field energy harvesting and millimeter-wave communication pathways while maintaining signal independence, while also ensuring the overall system's flexibility, thinness, and wearability. It provides a system platform for wireless power supply and high-speed communication for multiple passive wearable nodes.

[0066] Meanwhile, the wireless wearable network system is compatible with various adhesive passive sensors, allowing simultaneous connection to multiple flexible sensor modules such as ECG, pulse wave, and temperature sensors to meet complex physiological monitoring needs. It supports multi-channel parallel uploading of sensor data and is scalable.

[0067] Figure 8 This is a flowchart illustrating a communication method for a wireless wearable network system according to an exemplary embodiment. Figure 8 As shown, in an exemplary embodiment, the wireless wearable network system communication method is applied to any of the aforementioned wireless wearable network systems, including steps 810 to 830: Step 810: Through the passive wearable node in the wireless wearable network system, perform data acquisition, status sensing or actuator control operations, convert the generated data into high-frequency communication signals, and inject the high-frequency communication signals into the dual-mode conductive fabric of the wireless wearable network system.

[0068] In this embodiment of the invention, when a user brings an NFC-enabled external terminal device close to the surface of clothing, a near-field wireless power transfer structure pre-deployed in the fabric substrate begins to magnetically couple with it. During this process, the NFC transmitter built into the external terminal device actively radiates energy at a standard 13.56 MHz carrier frequency. The near-field wireless power transfer structure senses and receives this energy, forming a local magnetic field coupling, thereby achieving contactless energy transfer from the external terminal device to the dual-mode conductive fabric. Because the near-field wireless power transfer structure has a wide coverage area, the user does not need to deliberately align the structure; simply placing the external terminal device naturally close to the surface of the clothing achieves efficient charging.

[0069] The received energy is first rectified and regulated by the rectifier and voltage regulator circuits in the passive wearable node, converting alternating current (AC) into a stable direct current (DC). This DC voltage is then transmitted via a flexible conductive network within the fabric to the wearable node embedded in clothing or close to the skin. Because each passive wearable node integrates low-power rectifier and voltage regulator circuits, power supply stability and sufficient operating voltage are ensured, thereby driving the operation of the micro-sensors, microcontroller (MCU), and wireless communication modules. In this stage, the dual-mode conductive fabric acts as a passive distributed energy interface, ensuring that multiple passive wearable nodes can be activated simultaneously without the need for battery storage or wire connections.

[0070] Once the passive wearable node is powered and activated, it enters the data acquisition phase. The passive wearable node adheres to the skin surface, and its integrated functional modules continuously collect the user's physiological signals. These physiological signals are converted into digital signals by a local analog-to-digital converter (ADC) circuit, and then processed, stored, and prepared for transmission by the integrated MCU.

[0071] Each passive wearable node's power consumption is adapted to the wireless power supply capability, ensuring continuous and reliable data reading and encoding. During data acquisition, the passive wearable node also periodically monitors the power supply status and adjusts the sampling rate and transmission frequency through the power management module to achieve adaptive power consumption optimization.

[0072] The processed physiological data is transmitted to a nearby external terminal device via a wireless communication module. As mentioned earlier, due to the significant attenuation and reflection of 2.4 GHz Bluetooth signals by the human body and clothing structure, this invention specifically constructs a microstructured waveguide channel based on surface plasmon resonance (SSP), implemented along the conductive fabric with a periodic comb-like metal pattern. These SSP structures are printed or embroidered on the fabric substrate, which can limit the directional propagation path of the BLE signal on the fabric surface, enabling the signal to be transmitted efficiently along a set path in the 2.4 GHz band. Signal injection is achieved between the skin and the dual-mode conductive fabric through contact points, thereby converting the Bluetooth signal, which originally attenuates rapidly in the air, into a plasmon mode that propagates along the fabric, significantly improving data transmission distance, stability, and anti-interference capability. Finally, the signal is transmitted back to the external terminal device at the end of the fabric through a matching circuit or Bluetooth gateway, completing the data upload.

[0073] Step 820: The dual-mode conductive fabric receives low-frequency wireless energy from an external terminal device and transmits the low-frequency wireless energy to the passive wearable node, while the high-frequency communication signal is propagated directionally along the surface of the fabric substrate to the external terminal device of the wireless wearable network system.

[0074] In this embodiment of the invention, as described above, the dual-mode conductive fabric receives low-frequency wireless energy from an external terminal device and transmits the low-frequency wireless energy to a passive wearable node to power it. At the same time, it converts the signals collected by the functional module into high-frequency communication signals to propagate directionally along the surface of the fabric substrate to the external terminal device.

[0075] Step 830: The external terminal device collects, fuses, and analyzes the high-frequency communication signal, and incorporates low-frequency wireless energy into the near-field wireless energy transmission structure on the dual-mode conductive fabric, so as to power the passive wearable node through the dual-mode conductive fabric.

[0076] In this embodiment of the invention, the uploaded high-frequency communication signal is decoded on an external terminal device or other backend platform, and the information is aggregated, fused, and analyzed to facilitate classification and real-time display. Based on the analyzed data, alarms or daily assessment prompts can be triggered according to user settings.

[0077] Specifically, data from passive wearable nodes is collected, organized, categorized, and summarized to facilitate subsequent processing. The summarized data undergoes collaborative processing and integration, and then further mining, modeling, reasoning, and interpretation are performed based on the summarized or fused data to discover patterns, correlations, causality, trends, or anomalies.

[0078] When multiple passive wearable nodes are used, the broadcast mechanism of the BLE protocol allows each passive wearable node to occupy a channel using a preset address and time window. High-frequency communication signals are transmitted based on the occupied channel, avoiding communication conflicts. Simultaneously, the SSP structure supports multi-channel signal merging and demodulation, effectively handling high data throughput tasks and adapting to the high-fidelity sampling requirements of continuous ECG signals, pulse waveforms, and other multi-channel signals. To improve reliability, a node priority scheduling strategy based on received signal strength and a synchronization clock mechanism is introduced, ensuring stable transmission of critical data information even in complex network conditions or with numerous user actions.

[0079] In this embodiment of the invention, to verify the reliability of the wireless wearable network system provided by the present invention, continuous blood pressure monitoring using the wireless wearable network system provided by this embodiment is taken as an example. A customized battery-free skin sensor platform is introduced into the wireless wearable network system as a functional module, and then the formed passive wearable nodes are used as hand PPG nodes and chest ECG nodes. After wirelessly reading the physiological sensor data of multiple nodes, continuous blood pressure monitoring is carried out based on pulse propagation time in combination with heartbeat and pulse physiological signals.

[0080] Figure 9 Examples of structural design and basic performance characterization of dual-mode conductive fabrics. Figure 9 Figure a in the diagram shows an example of a dual-mode conductive fabric when the wireless reading node (2) is connected to the sensing node (1). Figure 9 Figures b and c in the figure show the normalized magnetic and electric field distributions generated by the line readout node (2), respectively, through a 75 cm long dual-mode conductive fabric in a 13.56 MHz power supply mode. Figure 9 (Figure b in the image) and 2.45 GHz communication mode ( Figure 9 The sensor nodes are wirelessly connected to endpoints (1) and (3) in Figure c. Figure 9 The d-plot in the figure shows the collected voltage and collected power at the skin sensing node as the resistive load changes. The horizontal axis represents the load size, and the left and right vertical axes represent the collected voltage and power, respectively. Figure 9 Figures e and f in the figure show the wireless power transmission efficiency η of the system at a frequency of 13.56 MHz with / without dual-mode conductive fabric, under different displacement amounts w and different distance variations h of the skin sensing node. The horizontal axis represents the magnitude of the displacement amount w, and the vertical axis represents the transmission efficiency. Figure 9 The g-plot in the figure shows the relationship between the percentage of data packets received by the skin sensor node and the transmission power. The horizontal axis represents the power of the transmitting end, and the vertical axis represents the packet reception rate. The error bars represent the mean ± standard deviation (n=5 measurements). Figure 9The h-plot and i-plot in the figure are violin plots, which compare the transmission coefficients measured under different displacements w and different distances h. The horizontal axis represents the magnitude of the displacement w and the distance h, respectively, and the vertical axis represents the signal transmission strength.

[0081] Figure 10 The design form and performance characterization of the sensor nodes on the battery skin. Figure 10 Figure a shows an exploded view of a passive wearable node and a dual-mode conductive fabric, in which sensor elements are connected to the body via serpentine wires. Figure 10 Figure b shows a photograph of the epidermal sensor and the results of finite element analysis, showing the geometric deformation and strain distribution of the structure when the sensor element is displaced by 4 mm during skin contact. Figure 10 Figure c is a functional block diagram, showing the composition of the skin sensor node and the system-level wireless power supply and data transmission unit (IR: Infrared, PD: Photodetector, I2C: Interconnect Integrated Circuit, LDO: Low Dropout Regulator). Figure 10 Figure c shows photographs of the epidermal sensor on a desktop (i), wrist (ii), and chest (iii). Figure 10 Figure d in the image is a photograph of a dry electrode with a serpentine structure. Figure 10 The e-graph and f-graph in the figure are based on the PPG (f) and ECG (g) signal results collected by the epidermal sensor and the traditional node, respectively. The horizontal axis is time, and the vertical axis is the normalized signal amplitude and acceleration. The solid triangle represents the pulse event, and the shaded area represents the motion event. It can be seen that the epidermal sensor has better anti-motion artifact performance than the traditional node. Figure 10 The g-plot in the figure compares the results of long-term ECG electrode characteristic measurements using dry skin electrodes and traditional wet electrodes. The horizontal axis represents time, and the vertical axis represents resistance. The figure shows a comparison of the changes in electrode impedance values ​​measured over time at different frequencies. The skin sensor outperforms the traditional wet electrode. Figure 10 The h and i plots in the figure correspond to the time-frequency analysis of the epidermal sensor signals in Figures e and f, respectively. The horizontal axis represents time and the vertical axis represents frequency. The shaded area represents the time period in which motion occurs. The experimental results demonstrate the anti-motion artifact performance of the epidermal sensor node.

[0082] Figure 11 This is a schematic diagram showing the results of a verification experiment for a wireless wearable network system. Figure 11 Figures a and b in the figure show the comparison between the electrocardiogram (ECG) and photoplethysmography (PPG) waveforms measured by the epidermal sensor nodes in the network and the gold standard results. The horizontal axis represents time, and the vertical axis represents the amplitude after signal normalization. The epidermal sensor signal waveforms show the same periodicity as the reference. Figure 11Figure c in the figure shows the comparison of heart rate (HR) and pulse rate (PR) data collected from ECG or PPG sensor nodes at rest and during the ingestion of 200 ml of coffee (shaded area) with the gold standard measurement. The horizontal axis represents time and the vertical axis represents the heart rate estimation result. Figure 11 The figure d in the figure shows a comparison between blood oxygen saturation (SpO2) calculated using the sensor node and the gold standard measurement during rest and short breath-hold periods. The horizontal axis represents time and the vertical axis represents blood oxygen concentration. Figure 11 Figures e and f in the figure are Bland-Altman plots of the measurement data corresponding to figures c and d, respectively, comparing the degree of deviation between the calculated heart rate (e) and SpO2 (f) and the reference. Figure 11 The g-plot in the figure shows the time synchronization operation of the ECG and PPG skin sensors for pulse conduction time measurement. The figure marks the P wave, QRS complex and T wave in the ECG waveform. The horizontal axis is time and the vertical axis is the normalized signal amplitude. Figure 11 The h-plot in the figure shows the results of stroke-by-stroke blood pressure estimation over a period of up to 2 hours using a skin sensor with only one calibration, and compares them with the results of a gold standard blood pressure monitor that measures once per minute. The horizontal axis represents time, and the vertical axis represents the estimated systolic blood pressure. Figure 11 Figure i in the figure is the Bland-Altman plot of the blood pressure data in Figure h, where MD represents the mean difference and SD represents the standard deviation. The blood pressure results measured in this invention show good consistency with the reference results.

[0083] Figure 12 Based on a dual-mode fabric sensor network, China conducted a continuous measurement experiment of multimodal physiological information in daily scenarios, including continuous commuting, sleep, and exercise scenarios. Figure 12 Figure a in the figure shows the continuous heart rate and blood pressure monitoring results during a 40-minute commute (including walking, subway rides, and shuttle bus rides). The horizontal axis of the right figure represents time, and the vertical axis represents the heart rate and systolic blood pressure monitoring results, respectively. Figure 12 Figure b in the figure shows the continuous measurement results of multimodal physiological information during sleep. Different shaded areas in the figure indicate different state stages. The horizontal axis represents time, and the vertical axis represents the monitoring results of heart rate, systolic blood pressure, and blood oxygen. Figure 12 Figure c in the figure shows the continuous measurement results of multimodal physiological information during physical activity on a treadmill at speeds of 4, 8, 10, and 12 km / h. The reference values ​​(M1, M2, M3) were obtained using a consumer-grade cuff blood pressure monitor. Each reading took approximately 50 seconds (orange shaded window). The horizontal axis represents time, and the vertical axis represents the estimated heart rate and systolic blood pressure, respectively. Figure 12The figure d in the figure shows the estimated results of continuous blood pressure measurements on participants P4 (upper) and P5 (lower), and compares them with the measurements of a standard blood pressure monitor (orange rectangle, measurement time 45 seconds). The horizontal axis is time and the vertical axis is the estimated systolic blood pressure. Figure 12 Figure e in the figure shows the Bland-Altman analysis of blood pressure estimation results from 103 measurements taken from 5 participants. MD in the figure represents the mean difference, and SD represents the standard deviation. The results indicate that continuous multimodal physiological monitoring based on a dual-mode fabric sensor network in daily scenarios possesses high reliability and stability.

[0084] In the embodiments of the present invention, the foregoing Figures 9 to 12 Each node in the above refers to the aforementioned passive wearable node.

[0085] Figure 13 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 13 As shown, the electronic device may include a processor 1310, a communications interface 1320, a memory 1330, and a communication bus 1340, wherein the processor 1310, the communications interface 1320, and the memory 1330 communicate with each other via the communication bus 1340. The processor 1310 can call logic instructions in the memory 1330 to execute a wireless wearable network system communication method, which includes: performing data acquisition, state sensing, or actuator control operations through a passive wearable node in the wireless wearable network system, converting the generated data into a high-frequency communication signal, and injecting the high-frequency communication signal into the dual-mode conductive fabric of the wireless wearable network system; The dual-mode conductive fabric receives low-frequency wireless energy from external terminal devices and transmits the low-frequency wireless energy to the passive wearable node, while the high-frequency communication signal is directionally propagated along the surface of the fabric substrate to the external terminal device of the wireless wearable network system. The external terminal device collects, fuses, and analyzes the high-frequency communication signals, and incorporates low-frequency wireless energy into the near-field wireless energy transmission structure on the dual-mode conductive fabric, thereby powering the passive wearable node through the dual-mode conductive fabric.

[0086] Furthermore, the logical instructions in the aforementioned memory 1330 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0087] On the other hand, the present invention also provides a computer program product, the computer program product including a computer program, the computer program being able to be stored on a non-transitory computer-readable storage medium, the computer program being executed by a processor, the computer being able to execute the wireless wearable network system communication method provided by the above methods, the method including: performing data acquisition, state perception or actuator control operations through a passive wearable node in the wireless wearable network system, converting the generated data into a high-frequency communication signal, and injecting the high-frequency communication signal into the dual-mode conductive fabric of the wireless wearable network system; The dual-mode conductive fabric receives low-frequency wireless energy from external terminal devices and transmits the low-frequency wireless energy to the passive wearable node, while the high-frequency communication signal is directionally propagated along the surface of the fabric substrate to the external terminal device of the wireless wearable network system. The external terminal device collects, fuses, and analyzes the high-frequency communication signals, and incorporates low-frequency wireless energy into the near-field wireless energy transmission structure on the dual-mode conductive fabric, thereby powering the passive wearable node through the dual-mode conductive fabric.

[0088] In another aspect, the present invention also provides a non-transitory computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the wireless wearable network system communication method provided by the above methods. The method includes: performing data acquisition, state sensing, or actuator control operations through a passive wearable node in the wireless wearable network system, converting the generated data into a high-frequency communication signal, and injecting the high-frequency communication signal into the dual-mode conductive fabric of the wireless wearable network system. The dual-mode conductive fabric receives low-frequency wireless energy from external terminal devices and transmits the low-frequency wireless energy to the passive wearable node, while the high-frequency communication signal is directionally propagated along the surface of the fabric substrate to the external terminal device of the wireless wearable network system. The external terminal device collects, fuses, and analyzes the high-frequency communication signals, and incorporates low-frequency wireless energy into the near-field wireless energy transmission structure on the dual-mode conductive fabric, thereby powering the passive wearable node through the dual-mode conductive fabric.

[0089] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0090] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0091] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dual-mode conductive fabric, characterized in that, include: Fabric base; A dual-mode conductive structure includes a near-field wireless power transmission structure and a near-field high-frequency wireless communication structure integrated on the fabric substrate; The near-field wireless power transmission structure is used to wirelessly receive energy from an external terminal device via electromagnetic coupling in the low-frequency band and transmit energy along the fabric substrate. The near-field high-frequency wireless communication structure is used to guide communication signals to propagate directionally along the fabric substrate in the high-frequency band.

2. The dual-mode conductive fabric according to claim 1, characterized in that, The near-field wireless power transfer structure includes a coil unit; The coil unit covers the target area of ​​the fabric substrate to enable wireless energy reception and transmission along the fabric substrate when an external terminal device is near any location on the fabric substrate.

3. The dual-mode conductive fabric according to any one of claims 1 to 2, characterized in that, The near-field high-frequency wireless communication structure includes a periodic pattern formed by an artificial surface plasmon structure, the periodic pattern being integrated on the surface of the fabric substrate, and the geometric parameters of the artificial surface plasmon structure being configured to support the propagation of high-frequency electromagnetic waves in a surface plasmon mode.

4. A wireless wearable network system, characterized in that, include: The dual-mode conductive fabric as described in any one of claims 1 to 3 is integrated into clothing to form the body domain transmission portion of a wireless wearable network. At least one passive wearable node is coupled to the dual-mode conductive fabric. The passive wearable node includes a functional module and a wireless communication module. The functional module is used to perform at least one function among data acquisition, state perception, human-machine interaction, or actuator control. The wireless communication module is coupled to a near-field high-frequency wireless communication structure on the dual-mode conductive fabric and is used to transmit the data generated by the functional module in the form of a high-frequency communication signal through the near-field high-frequency wireless communication structure. An external terminal device is used to transmit wireless energy, wirelessly power the passive wearable node through the near-field wireless energy transmission structure on the dual-mode conductive fabric, receive high-frequency communication signals from the passive wearable node through the near-field high-frequency wireless communication structure, and perform information aggregation, fusion, and analysis on the high-frequency communication signals.

5. The wireless wearable network system according to claim 4, characterized in that, The functional module includes at least one of the following: human-computer interaction device, physiological signal acquisition sensor, environmental sensor, chemical sensor, stress sensor, acoustic sensor, optical sensor, electromagnetic sensor, gas sensor, inertial measurement unit, tactile feedback actuator, display unit, and identity recognition tag; The passive wearable node also includes a rectifier circuit and a voltage regulation circuit, which are used to rectify and regulate the energy sensed by the near-field wireless power transmission structure in order to power the passive wearable node.

6. The wireless wearable network system according to any one of claims 4 to 5, characterized in that, The wireless wearable network system includes multiple passive wearable nodes, which perform parallel energy distribution and multiplexed transmission of high-frequency communication signals through the dual-mode conductive fabric.

7. A communication method for a wireless wearable network system, characterized in that, Applied to the wireless wearable network system according to any one of claims 4 to 6, the method comprises: Through the passive wearable node in the wireless wearable network system, data acquisition, state perception or actuator control operations are performed, and the generated data is converted into high-frequency communication signals, which are then injected into the dual-mode conductive fabric of the wireless wearable network system. The dual-mode conductive fabric receives low-frequency wireless energy from external terminal devices and transmits the low-frequency wireless energy to the passive wearable node, while the high-frequency communication signal is directionally propagated along the surface of the fabric substrate to the external terminal device of the wireless wearable network system. The external terminal device collects, fuses, and analyzes the high-frequency communication signals, and incorporates low-frequency wireless energy into the near-field wireless energy transmission structure on the dual-mode conductive fabric, thereby powering the passive wearable node through the dual-mode conductive fabric.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that, When the processor executes the computer program, it implements the wireless wearable network system communication method as described in claim 7.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the wireless wearable network system communication method as described in claim 7.

10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the wireless wearable network system communication method as described in claim 7.

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