Hairband and detection system

Abstract

The application discloses a hairband and detection system, and relates to the technical field of intelligent wearing, wherein the hairband is a ring structure, and comprises a first flexible substrate layer, a flexible circuit layer and a second flexible substrate layer from outside to inside; a flexible sensing component is arranged on one side of the flexible circuit layer facing the second flexible substrate layer; the flexible sensing component penetrates through the second flexible substrate layer and is at least partially exposed on the inner side surface of the second flexible substrate layer; the flexible sensing component is electrically connected with the flexible circuit layer, and is configured to collect physiological characteristic information of a user. The technical scheme provided by the application can realize that the hairband has the function of continuously monitoring the physiological characteristics of the user, and improves the wearing comfort of the user.

Description

Technical Field

[0001] This invention relates to the field of smart wearable technology, and in particular to a headband and detection system. Background Technology

[0002] Currently, headbands on the market are usually used to fix users' hair and generally lack the function of continuous monitoring of users' physiological characteristics. At the same time, smart wearable devices with physiological monitoring (such as watches or bracelets) generally have a strong foreign body sensation, resulting in poor wearing comfort for users. Summary of the Invention

[0003] The main objective of this invention is to propose a headband and a detection system that enables the headband to continuously monitor the user's physiological characteristics while improving the user's wearing comfort.

[0004] To achieve the above objectives, the present invention proposes a headband, which has a ring-shaped structure and includes, from the outside to the inside, a first flexible substrate layer, a flexible circuit layer and a second flexible substrate layer. A flexible sensing component is disposed on the side of the flexible circuit layer facing the second flexible substrate layer.

[0005] The flexible sensing component penetrates the second flexible substrate layer and is at least partially exposed on the inner surface of the second flexible substrate layer; The flexible sensing component is electrically connected to the flexible circuit layer, and the flexible sensing component is configured to collect the user's physiological characteristic information.

[0006] In one embodiment, the flexible sensing component includes a flexible photoplethysmography (PPG) sensing module, which is disposed on the side of the flexible circuit layer facing the second flexible substrate layer and is at least partially exposed on the inner surface of the second flexible substrate layer. The flexible PPG sensing module is electrically connected to the flexible circuit layer.

[0007] In one embodiment, the flexible photoplethysmography (PPG) pulse wave sensing module includes a flexible organic photoelectric sensor and a flexible organic light-emitting diode arranged at intervals. The second flexible substrate layer is provided with a first clearance through-hole and a light-transmitting window corresponding to the flexible organic photoelectric sensor and the flexible organic light-emitting diode, respectively; At least a portion of the flexible organic photoelectric sensor is exposed on the inner surface of the second flexible substrate layer through the first clearance through-hole.

[0008] In one embodiment, the flexible organic photoelectric sensor and / or the flexible organic light-emitting diode employ a thin-film structure; and / or, The spacing between the flexible organic photoelectric sensor and the flexible organic light-emitting diode is 1mm to 10mm.

[0009] In one embodiment, the flexible sensing component further includes a flexible tactile sensor disposed on the side of the flexible circuit layer facing the second flexible substrate layer and at least partially exposed on the inner surface of the second flexible substrate layer, the flexible tactile sensor being electrically connected to the flexible circuit layer.

[0010] In one embodiment, the flexible tactile sensor includes a flexible piezoelectric tactile sensor and / or a flexible capacitive tactile sensor.

[0011] In one embodiment, the flexible sensing component further includes a flexible fabric electrode disposed on the side of the flexible circuit layer facing the second flexible substrate layer and at least partially exposed on the inner surface of the second flexible substrate layer, and the flexible fabric electrode is electrically connected to the flexible circuit layer.

[0012] In one embodiment, the flexible fabric electrodes are configured as a plurality of electrodes, which are distributed at intervals along the circumference of the hairband and are at least partially exposed on the inner surface of the second flexible substrate layer.

[0013] In one embodiment, the headband further includes a first fabric layer and a second fabric layer, wherein the first fabric layer is disposed on the outside of the first flexible substrate layer, the second fabric layer is disposed on the inside of the second flexible substrate layer, and the first fabric layer and the second fabric layer are connected. The flexible sensing component extends through the second flexible substrate layer and the second fabric layer, and is at least partially exposed on the inner surface of the second fabric layer.

[0014] The present invention also proposes a detection system, including an electronic device and a headband as described above, wherein the headband is communicatively connected to the electronic device.

[0015] The headband provided by this invention has a ring-shaped structure, comprising, from the outside in, a first flexible substrate layer, a flexible circuit layer, and a second flexible substrate layer. A flexible sensing component is disposed on the side of the flexible circuit layer facing the second flexible substrate layer. The flexible sensing component penetrates the second flexible substrate layer and is at least partially exposed thereout. The flexible sensing component is electrically connected to the flexible circuit layer and is configured to collect the user's physiological characteristic information. When the headband is worn on the user's head, the exposed portion of the flexible sensing component forms a close and direct contact with the user's scalp, enabling continuous and stable collection of the user's physiological characteristic information. In other words, the headband has the function of continuously monitoring the user's physiological characteristics. Furthermore, the first flexible substrate layer, the flexible circuit layer, the second flexible substrate layer, and the flexible sensing component are all flexible components, thus the headband has good flexibility and deformation adaptability. During wear, the headband can adapt to the head contour, eliminating the foreign body sensation and pressure caused by traditional smart wearable devices, improving user comfort while achieving long-term continuous physiological monitoring. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present 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 only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 A schematic diagram of a structure of a headband according to an embodiment of the present invention; Figure 2 A schematic diagram of the cross-sectional structure of a headband provided by the present invention after it has been broken; Figure 3 A schematic cross-sectional view of another embodiment of the headband provided by the present invention after it has been broken.

[0018] Explanation of icon numbers: 100. Headband; 1. First flexible substrate layer; 2. Flexible circuit layer; 21. Flexible insulating substrate; 22. Flexible conductive layer; 3. Second flexible substrate layer; 4. Flexible sensing component; 41. Flexible photoplethysmography pulse wave sensing module; 411. Flexible organic photoelectric sensor; 412. Flexible organic light-emitting diode; 42. Flexible tactile sensor; 43. Flexible fabric electrode; 5. First fabric layer; 6. Second fabric layer; 7. Bluetooth chip; 8. Processor.

[0019] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0022] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0023] Currently, headbands on the market are usually used to fix users' hair and generally lack the function of continuous monitoring of users' physiological characteristics. At the same time, smart wearable devices with physiological monitoring (such as watches or bracelets) generally have a strong foreign body sensation, resulting in poor wearing comfort for users.

[0024] To address the aforementioned issues, this invention proposes a headband that aims to enable continuous monitoring of the user's physiological characteristics while simultaneously improving the user's wearing comfort.

[0025] Please see Figure 1 and Figure 2 In one embodiment of the present invention, the headband 100 is a ring-shaped structure, which includes a first flexible substrate layer 1, a flexible circuit layer 2 and a second flexible substrate layer 3 in sequence from the outside to the inside. A flexible sensing component 4 is disposed on the side of the flexible circuit layer 2 facing the second flexible substrate layer 3. The flexible sensing component 4 penetrates the second flexible substrate layer 3 and is at least partially exposed outside the second flexible substrate layer 3. The flexible sensing component 4 is electrically connected to the flexible circuit layer 2 and is configured to collect the user's physiological characteristic information.

[0026] The headband 100 has a loop structure, optionally a circular loop structure, to fit the user's head contour. The headband 100 employs a multi-layer composite structure, comprising, from the outside in, a first substrate layer, a flexible circuit layer 2, and a second substrate layer. A flexible sensing component 4 is integrated on the surface of the flexible circuit layer 2 facing the second substrate layer. Optionally, the flexible sensing component 4 is fixed to the flexible circuit layer 2 by adhesive, welding, or other suitable methods, and after fixing, the flexible sensing component 4 is electrically connected to the flexible circuit layer 2. The second flexible substrate layer 3 has clearance holes (not shown) corresponding to the flexible sensing component 4, penetrating both opposite surfaces of the second flexible substrate layer 3. The flexible sensing component 4 is at least partially located within the clearance holes, and its sensing end (i.e., the end furthest from the flexible circuit layer 2) is at least partially exposed on the inner surface of the second flexible substrate layer 3. When the headband 100 is worn on the user's head, the sensing end of the flexible sensing component 4 can form a close, direct contact with the user's scalp, thereby enabling continuous and stable collection of the user's physiological characteristic information.

[0027] The user's physiological characteristics include, but are not limited to, blood oxygen saturation, heart rate, blood pressure, electrocardiogram signals, skin conductance signals, and respiratory rate.

[0028] The first flexible substrate layer 1, the flexible circuit layer 2, the second flexible substrate layer 3, and the flexible sensing component 4 are all flexible components. As a result, the headband 100 has good flexibility and deformation adaptability. During the user's wearing process, the headband 100 can adapt to the head contour, eliminating the foreign body feeling and pressure caused by traditional smart wearable devices. While achieving long-term continuous physiological monitoring, it improves the user's wearing comfort.

[0029] The first flexible substrate layer 1 is located on the outside of the headband 100, that is, after the headband 100 is worn, the first flexible substrate layer 1 is away from the user's head skin, which can play the role of dust and dirt prevention, mechanical support and stress buffering, and has a good protective effect on the internal flexible circuit layer 2 and flexible sensing component 4.

[0030] Optionally, the material of the first flexible substrate layer 1 includes at least one of thermoplastic polyurethane, liquid silicone, and polydimethylsiloxane.

[0031] The second flexible substrate layer 3 is located inside the headband 100 and comes into direct contact with the user's scalp after being worn. It provides an outlet for the flexible sensing component 4 so that the sensing end of the flexible sensing component 4 fits tightly against the scalp. At the same time, the second flexible substrate layer 3 also provides good protection for the internal flexible circuit layer 2 and the flexible sensing component 4.

[0032] Optionally, the material of the second flexible substrate layer 3 includes at least one of thermoplastic polyurethane, liquid silicone, and polydimethylsiloxane.

[0033] The thickness of the first flexible substrate layer 1 and the second flexible substrate layer 3 is not limited here, and can be determined according to actual needs.

[0034] In some embodiments, the flexible circuit layer 2 includes a flexible insulating substrate 21 and a flexible conductive layer 22, wherein the flexible insulating substrate 21 includes, but is not limited to, a polyimide film, and the flexible conductive layer 22 is made of, but is not limited to, liquid metal (such as gallium indium alloy) and / or metal nanowires (such as silver nanowires).

[0035] Polyimide films possess excellent mechanical flexibility, heat resistance, and electrical insulation, providing stable physical support for circuit layers and adapting to the dynamic deformation of the head curve without breaking.

[0036] Both liquid metals and metal nanowires possess excellent intrinsic stretchability and fatigue resistance, maintaining good conductivity even under stretching and bending. This eliminates the rigid copper traces and solder joints found in traditional circuit boards, achieving excellent flexibility. Optionally, liquid metals and / or metal nanowires can be attached to polyimide films via screen printing, inkjet printing, or other suitable processes.

[0037] It should be noted that a processor 8 is also attached to the side of the flexible circuit layer 2 facing the second flexible substrate layer 3. The flexible sensing component 4 is electrically connected to the processor 8 through the flexible circuit layer 2 to form a complete signal acquisition-transmission-processing link. The physiological signals acquired by the flexible sensing component 4 are directly transmitted to the processor 8 for processing.

[0038] Optionally, the processor 8 is mounted on the flexible circuit layer 2 using system-in-package technology, which enables high-density integration and miniaturization of the device, thereby ensuring the overall thinness and smoothness of the headband 100 and effectively improving the user's wearing comfort.

[0039] Reference Figure 3 In some embodiments, the flexible sensing component 4 includes a flexible photoplethysmography (PPG) sensing module 41, which is disposed on the side of the flexible circuit layer 2 facing the second flexible substrate layer 3 and is at least partially exposed on the inner surface of the second flexible substrate layer 3. The flexible PPG sensing module 41 is electrically connected to the flexible circuit layer 2.

[0040] The headband 100 integrates a flexible photoplethysmography (PPG) sensor module, which can monitor the user's heart rate, blood oxygen, and blood flow / brain activity signals.

[0041] Refer again Figure 3In some embodiments, the flexible photoplethysmography (PPG) sensor module 41 includes a flexible organic photoelectric sensor 411 and a flexible organic light-emitting diode (OLED) 412 spaced apart; the second flexible substrate layer 3 is provided with a first clearance through-hole (not shown) and a light-transmitting window (not shown) corresponding to the flexible organic photoelectric sensor 411 and the flexible organic light-emitting diode 412, respectively; at least a portion of the flexible organic photoelectric sensor 411 is exposed on the inner surface of the second flexible substrate layer 3 through the first clearance through-hole.

[0042] Flexible organic optoelectronic (OPD) sensors and flexible organic light-emitting diodes (LEDs) are mounted alternately on the side of the flexible circuit layer 2 facing the second flexible substrate layer 3, and are both electrically connected to the processor 8 through the flexible circuit layer 2. The second flexible substrate layer 3 is provided with a first clearance through-hole and a light-transmitting window corresponding to the flexible OPD sensor and the flexible LED, respectively. At least a portion of the sensing end of the flexible OPD sensor is exposed on the inner surface of the second flexible substrate layer 3. When the headband 100 is worn on the user's head, the flexible LED emits green or infrared light to the scalp through the light-transmitting window. The light beam is scattered and absorbed in the skin, muscles, bones, and blood vessel tissues. Due to the periodic changes in blood volume caused by the heartbeat (i.e., photoplethysmography, PPG), the intensity of light absorption by the tissue exhibits periodic fluctuations synchronized with the heartbeat. The flexible OPD sensor's sensing end is directly attached to the scalp. It receives modulated light signals reflected / scattered by the tissue. Based on the photoelectric properties of organic semiconductor materials, incident photons are absorbed to generate excitons. These excitons rapidly separate into electron-hole pairs at the interface and drift under the influence of a built-in electric field, forming a photocurrent. The intensity of this photocurrent strictly follows fluctuations in the incident light intensity, thus converting the weak optical heartbeat signal into an electrical signal. The generated analog photocurrent signal is transmitted to the processor 8 via the flexible circuit layer 2. It undergoes low-noise amplification, filtering, and digital algorithm processing, ultimately outputting high-precision heart rate and blood oxygen saturation data. Furthermore, it can extract hemodynamic features and even assist in assessing cerebral blood flow activity.

[0043] In some embodiments, the flexible organic photoelectric sensor 411 employs a thin-film structure.

[0044] Specifically, the flexible organic photoelectric sensor 411 includes a flexible substrate, a bottom electrode, an organic photoactive layer, a top electrode, and an encapsulation protective layer stacked in sequence. The material composition and thickness of each layer can be referred to the prior art, and will not be described in detail here.

[0045] The flexible organic photoelectric sensor 411 of this invention adopts a thin-film structure, which can significantly reduce the thickness of the flexible organic photoelectric sensor 411, eliminate the foreign body sensation and pressure caused by traditional smart wearable devices, and improve user comfort during long-term wear. Furthermore, the thin-film structure has good mechanical flexibility, which can adaptively conform to the complex curved contours of the user's head. Good surface conformation can effectively eliminate interface light loss and environmental noise, significantly improving the signal-to-noise ratio, thereby ensuring high accuracy and high reliability of physiological monitoring data.

[0046] In some embodiments, the flexible organic light-emitting diode 412 adopts a thin-film structure.

[0047] Specifically, the flexible organic light-emitting diode 412 comprises a flexible substrate, an anode, an organic light-emitting functional layer (including a hole injection / transport layer, a light-emitting layer, an electron transport layer, etc.), and a cathode, which are stacked sequentially. The flexible organic light-emitting diode 412 adopts a thin-film structure, with a relatively thin overall thickness and excellent in-plane ductility and bendability. When the headband 100 is worn on the head, the thin-film LED can elastically deform to conform to the curvature of the scalp, ensuring that the light-emitting surface always maintains the optimal relative angle and distance with the skin surface, thereby emitting a uniform and stable excitation beam, providing consistent light source conditions for high-precision photoplethysmography (PPG) measurements.

[0048] It should be noted that when the headband 100 is worn on the user's head, the flexible organic photoelectric sensor 411 and the flexible organic light-emitting diode 412 are respectively aligned with and cover the temple area (i.e., the temporal region) of the user's head. Thus, the position of the light-transmitting window and the first clearance aperture corresponds to the surface projection area of ​​the superficial temporal artery. At this position, the green or infrared light emitted by the flexible LED can directly penetrate the thin temporal skin and subcutaneous tissue, acting on the blood-rich superficial temporal artery and its branches. The flexible OPD sensing end, closely attached to the skin, is located in the adjacent area of ​​this artery to receive the reflected light signal modulated by the blood. This temple-targeting layout fully utilizes the anatomical advantages of this region—thin skin, strong bony support, and superficial blood vessels—significantly reducing light scattering loss in soft tissue. This allows for the acquisition of higher amplitude, lower noise photoplethysmography (PPG) signals, providing an optimal signal source for further calculation of cerebral hemodynamic parameters.

[0049] In some embodiments, the spacing between the flexible organic photoelectric sensor 411 and the flexible organic light-emitting diode 412 is 1mm to 10mm, such as 1mm, 2mm, 5mm, 8mm, 10mm, or any range between the two endpoints. It should be noted that the spacing specifically refers to the distance between their optical centers.

[0050] Specifically, when the spacing is between 1mm and 3mm, it primarily detects reflected light signals from the superficial microvascular network of the scalp, exhibiting a high signal-to-noise ratio and enabling the extraction of high-precision heart rate signals. When the spacing is between 3mm and 10mm, the average penetration depth of the photons increases, effectively detecting blood flow information from the main trunk of the superficial temporal artery located deeper under the skin, and monitoring blood oxygen saturation signals. These ranges effectively avoid direct optical crosstalk between the light source and the detector, while also preventing signal attenuation to noise levels due to excessive distance.

[0051] Refer again Figure 2 In some embodiments, the flexible sensing component 4 further includes a flexible tactile sensor 42, which is disposed on the side of the flexible circuit layer 2 facing the second flexible substrate layer 3 and is at least partially exposed on the inner surface of the second flexible substrate layer 3. The flexible tactile sensor 42 is electrically connected to the flexible circuit layer 2.

[0052] The flexible sensing component 4 further integrates a flexible tactile sensor 42, enabling multi-dimensional physiological and interactive signal acquisition. The flexible tactile sensor 42 can be adhesively attached to the side of the flexible circuit layer 2 facing the second flexible substrate layer 3. The second flexible substrate layer 3 has a second clearance through-hole corresponding to the flexible tactile sensor 42, so that the sensing surface of the flexible tactile sensor 42 is at least partially exposed on the inner surface of the second flexible substrate layer 3. This design ensures that the flexible tactile sensor 42 can directly contact the skin and sense blood pressure changes when the headband 100 is worn, avoiding the buffering attenuation of pressure transmission by the second flexible substrate layer 3. Simultaneously, the flexible tactile sensor 42 can be electrically connected to the processor 8 through conductive vias or traces embedded in the flexible circuit layer 2, thereby transmitting the acquired blood pressure change signals to the processor 8.

[0053] In an optional embodiment, the flexible tactile sensor 42 includes a flexible piezoelectric tactile sensor and / or a flexible capacitive tactile sensor.

[0054] Flexible piezoelectric tactile sensors utilize the positive piezoelectric effect of piezoelectric materials (such as PVDF and PZT nanowires) to directly convert the weak mechanical deformation generated by vascular pulsation into an electrical charge signal, exhibiting excellent response to the high-frequency components of dynamic pulse waves. Flexible piezocapacitive tactile sensors utilize the capacitance change caused by pressure variations in the dielectric layer thickness, possessing high linearity and static pressure retention capability, enabling accurate measurement of the vast majority of the pulse wave amplitude and DC component. Both types of tactile sensors exhibit high sensitivity and dynamic response. When the headband 100 is worn on the user's head, the flexible piezoelectric and / or flexible piezocapacitive tactile sensors adhere closely to the skin, sensing the minute pressure waves of the pulse in real time, achieving continuous blood pressure trend monitoring.

[0055] Refer again Figure 2and Figure 3 In some embodiments, the flexible sensing component 4 further includes a flexible fabric electrode 43, which is disposed on the side of the flexible circuit layer 2 facing the second flexible substrate layer 3 and is at least partially exposed on the inner surface of the second flexible substrate layer 3. The flexible fabric electrode 43 is electrically connected to the flexible circuit layer 2.

[0056] The flexible sensing component 4 further integrates a flexible fabric electrode 43, enabling non-invasive acquisition of bioelectrical signals. The flexible fabric electrode 43 can be attached to the side of the flexible circuit layer 2 facing the second flexible substrate layer 3 via welding, bonding, or thermoforming. The second flexible substrate layer 3 has a third clearance through-hole (not shown) corresponding to the flexible fabric electrode 43, so that the sensing surface of the flexible fabric electrode 43 is at least partially exposed on the inner surface of the second flexible substrate layer 3. This design ensures that when the headband 100 is worn on the user's head, the flexible fabric electrode 43 can directly contact the skin, forming a stable bioelectrical signal acquisition channel.

[0057] The flexible fabric electrode 43 is electrically connected to the processor 8 through the flexible circuit layer 2, thereby transmitting the bioelectrical signals collected by the flexible fabric electrode 43 to the processor 8. Optionally, the flexible fabric electrode 43 can be directly fixed and electrically connected to the flexible circuit layer 2 by welding, conductive adhesive bonding or thermoforming, achieving integration of mechanical fixation and electrical conduction.

[0058] The flexible fabric electrode 43 has a porous structure and high flexibility. It can establish a low-impedance contact by utilizing the trace amount of sweat or natural moisture on the skin surface without applying any conductive paste. This enables long-term and comfortable acquisition of high-quality electrocardiogram (ECG) and electrical activity of the skin (EDA) signals, effectively avoiding the skin allergies and dryness failure problems caused by traditional wet electrodes.

[0059] In some embodiments, the flexible fabric electrode 43 includes a flexible substrate and a conductive functional layer. The flexible substrate is woven from insulating polymer yarns, and the conductive functional layer is coated or mixed into the yarns of the flexible substrate. Optionally, the fibers of the conductive functional layer are mixed into the yarns of the flexible substrate to form the flexible fabric electrode 43. The fibers of the conductive functional layer include, but are not limited to, at least one of nano-metal-coated fibers (such as silver-plated or gold-plated nylon fibers) or intrinsically conductive fibers (such as carbon fibers or graphene-modified fibers).

[0060] In an optional embodiment, a plurality of flexible fabric electrodes 43 are provided, which are distributed at intervals along the circumference of the headband 100 and are at least partially exposed on the inner surface of the second flexible substrate layer 3.

[0061] With this design, when the headband 100 is worn on the user's head, the multiple flexible fabric electrodes 43 are arranged in a distributed array, supporting multi-channel synchronous acquisition. This allows for the flexible construction of single-lead or multi-lead electrocardiograms (ECGs) to obtain vector information about cardiac electrical activity. Simultaneously, one of the flexible fabric electrodes 43 can be used as a reference ground, while the others serve as signal acquisition terminals, effectively suppressing environmental noise.

[0062] Refer again Figure 2 and Figure 3 In some embodiments, the headband 100 further includes a first fabric layer 5 and a second fabric layer 6. The first fabric layer 5 is disposed on the outside of the first flexible substrate layer 1, and the second fabric layer 6 is disposed on the inside of the second flexible substrate layer 3. The first fabric layer 5 and the second fabric layer 6 are connected. The flexible sensing component 4 penetrates the second flexible substrate layer 3 and the second fabric layer 6 and is at least partially exposed on the inner surface of the second fabric layer 6.

[0063] The first fabric layer 5 is disposed on the outer side of the first flexible substrate layer 1, that is, the outer surface of the headband 100, and serves to provide wear resistance, decoration, and structural support. The second fabric layer 6 is disposed on the inner side of the second flexible substrate layer 3, that is, the inner lining of the headband 100, and serves to provide skin-friendliness, sweat absorption, and a comfortable wearing experience. The first fabric layer 5 and the second fabric layer 6 are connected to each other in the edge area of ​​the headband 100 by stitching, heat pressing, or ultrasonic welding, completely covering the first flexible substrate layer 1, the flexible circuit layer 2, and the second flexible substrate layer 3 to form an integrated flexible strip structure. Since the flexible sensing component 4 (including the flexible photoplethysmography pulse wave sensing module 41, the flexible tactile sensor 42, and the flexible fabric electrode 43, etc.) is configured to be installed through, that is, the flexible sensing component 4 passes through the second flexible substrate layer 3 and the second fabric layer 6 in sequence, specifically, openings or perforations are provided at corresponding positions in the second fabric layer 6. The sensing surfaces of the flexible sensing component 4 (such as light-emitting / receiving windows, pressure-sensing surfaces, electrode contact surfaces, etc.) are at least partially exposed on the inner surface of the second fabric layer 6, allowing it to directly conform to the user's skin after the headband 100 is worn. This structural design utilizes a double-layer fabric layer to protect the delicate internal electronic circuitry from sweat and mechanical pulling, while the partial exposed window design eliminates the fabric layer's obstruction of light and electrical signals, ensuring a high signal-to-noise ratio for physiological signal acquisition.

[0064] In some embodiments, the headband 100 also integrates a dynamic fit adjustment structure (not shown), which is configured to automatically adjust the circumferential tension of the headband 100 according to the wearer's head circumference and real-time wearing status, so as to ensure that the flexible sensing component 4 maintains a constant contact pressure with the skin.

[0065] In one specific embodiment, an inflatable or liquid-filled elastic pouch (not shown) is provided on the side of the flexible sensing component 4 facing the flexible circuit layer 2. An exhaust valve is provided on the elastic pouch. The elastic pouch band is distributed circumferentially along the headband 100. The pouch is connected to a micro-piezoelectric micropump or electromagnetic micropump via a microchannel. The pump body is integrated into the control module of the processor 8. The control module drives the micropump to inject fluid (air or biocompatible liquid) into the elastic pouch, causing the pouch to expand radially and thus increase the inner diameter of the headband 100, increasing the pressure on the head. Conversely, the fluid is released through the exhaust valve to reduce the pressure.

[0066] In some embodiments, the flexible circuit layer 2 also integrates an ultrathin flexible solid-state thin-film battery and a triboelectric nanogenerator (TENG) array (not shown) on the side facing the second flexible substrate layer 3. The triboelectric nanogenerator (TENG) array sequentially penetrates the second flexible substrate layer 3 and the second fabric matrix, and is at least partially exposed on the inner surface of the fabric matrix. This allows for the real-time replenishment of electrical energy using the mechanical energy generated by head micro-movements (such as nodding, turning, and chewing), significantly extending the continuous monitoring cycle.

[0067] In some embodiments, the flexible circuit layer 2 further integrates a [missing information - likely a component or material] on the side facing the second flexible substrate layer 3. This invention also proposes a detection system, which includes an electronic device and a headband 100. The specific structure of the headband 100 is as described in the above embodiments. Since this detection system adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here. The headband 100 is communicatively connected to the electronic device, such as through wireless communication or Bluetooth. The electronic device includes, but is not limited to, at least one of a smartphone, tablet computer, smartwatch, personal computer, and cloud server.

[0068] Refer again Figure 2 and Figure 3 In some embodiments, a Bluetooth chip 7 is also attached to the side of the flexible circuit layer 2 facing the second flexible substrate layer 3. The Bluetooth chip 7 is electrically connected to the flexible circuit layer 2, thereby enabling communication between the headband 100 and external electronic devices. Real-time detected physiological characteristic data can be uploaded to the external electronic devices, achieving real-time waveform transmission and feature data synchronization. Collected multimodal physiological signals (such as ECG / EDA / PPG) can be instantly uploaded to the electronic devices for visualization, AI analysis, and long-term storage. Simultaneously, remote firmware upgrades and command control are supported, realizing a closed loop from local sensing to cloud intelligence, providing users with continuous, remote, and medical-grade personal health management services.

[0069] Optionally, the Bluetooth chip 7 and the processor 8 are integrated into one unit, that is, a single-chip system is used to integrate the Bluetooth chip 7 and the processor 8 together, which further facilitates the headband 100 to achieve a thin and comfortable design.

[0070] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A headband, characterized in that, The headband has a ring-shaped structure and includes, from the outside to the inside, a first flexible substrate layer, a flexible circuit layer, and a second flexible substrate layer. A flexible sensing component is disposed on the side of the flexible circuit layer facing the second flexible substrate layer. The flexible sensing component penetrates the second flexible substrate layer and is at least partially exposed on the inner surface of the second flexible substrate layer; The flexible sensing component is electrically connected to the flexible circuit layer, and the flexible sensing component is configured to collect the user's physiological characteristic information.

2. The headband as described in claim 1, characterized in that, The flexible sensing component includes a flexible photoplethysmography (PPG) sensing module, which is disposed on the side of the flexible circuit layer facing the second flexible substrate layer and is at least partially exposed on the inner surface of the second flexible substrate layer. The flexible PPG sensing module is electrically connected to the flexible circuit layer.

3. The headband as described in claim 2, characterized in that, The flexible photoplethysmography pulse wave sensing module includes a flexible organic photoelectric sensor and a flexible organic light-emitting diode arranged at intervals. The second flexible substrate layer is provided with a first clearance through-hole and a light-transmitting window corresponding to the flexible organic photoelectric sensor and the flexible organic light-emitting diode, respectively; At least a portion of the flexible organic photoelectric sensor is exposed on the inner surface of the second flexible substrate layer through the first clearance through-hole.

4. The headband as described in claim 3, characterized in that, The flexible organic photoelectric sensor and / or the flexible organic light-emitting diode adopt a thin-film structure; and / or... The spacing between the flexible organic photoelectric sensor and the flexible organic light-emitting diode is 1mm to 10mm.

5. The headband as described in claim 2, characterized in that, The flexible sensing component further includes a flexible tactile sensor, which is disposed on the side of the flexible circuit layer facing the second flexible substrate layer and is at least partially exposed on the inner surface of the second flexible substrate layer. The flexible tactile sensor is electrically connected to the flexible circuit layer.

6. The headband as described in claim 5, characterized in that, The flexible tactile sensor includes a flexible piezoelectric tactile sensor and / or a flexible capacitive tactile sensor.

7. The headband as described in claim 5, characterized in that, The flexible sensing component further includes a flexible fabric electrode, which is disposed on the side of the flexible circuit layer facing the second flexible substrate layer and is at least partially exposed on the inner surface of the second flexible substrate layer. The flexible fabric electrode is electrically connected to the flexible circuit layer.

8. The headband as described in claim 7, characterized in that, The flexible fabric electrodes are configured as a plurality of electrodes, which are distributed at intervals along the circumference of the hairband and are at least partially exposed on the inner surface of the second flexible substrate layer.

9. The hairband as described in any one of claims 1 to 8, characterized in that, The headband further includes a first fabric layer and a second fabric layer. The first fabric layer is disposed on the outside of the first flexible substrate layer, and the second fabric layer is disposed on the inside of the second flexible substrate layer. The first fabric layer and the second fabric layer are connected. The flexible sensing component extends through the second flexible substrate layer and the second fabric layer, and is at least partially exposed on the inner surface of the second fabric layer.

10. A detection system, characterized in that, It includes an electronic device and a headband as claimed in any one of claims 1 to 9, the headband being communicatively connected to the electronic device.

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