Multi-scene composite detection intelligent wearable safety device and graded early warning method

Abstract

The application discloses a multi-scene composite detection intelligent wearable safety device and a hierarchical early warning method, and belongs to the technical field of wearable safety protection devices. The device is mainly composed of a wearable body and a functional body. The functional body is internally provided with a receiving cavity. A detection head assembly that can be flipped or slid out is connected in the cavity and is flush with the surface of the functional body when being received. A flexible composite antenna is embedded in the wearable body. A radio frequency switch module is used to time-multiplex a thunder and lightning detection frequency band and a radio frequency detection frequency band. A magnetic expansion bin is further arranged on the wearable body. A functional expansion module can be connected as required. The device integrates a thunder and lightning approaching early warning function, a cat-eye effect-based anti-stealing detection function, a full-band anti-eavesdropping detection function and a one-key help-seeking function. Low-power hierarchical early warning is realized through three modes of business travel, outdoor and daily use. The device is made of recyclable and environmentally friendly materials and is suitable for various wearable forms such as waistbands, watches and bracelets.

Description

Technical Field

[0001] This invention belongs to the field of wearable safety protection equipment and detection technology. Specifically, it relates to a hidden intelligent wearable safety device and a graded early warning method that integrates lightning warning, anti-spy camera detection, anti-eavesdropping detection and emergency rescue functions. It is made of environmentally friendly and recyclable materials and is suitable for various wearable forms such as belts, watches, bracelets, and name badges, covering multiple scenarios of safety protection such as business travel, outdoor work, and daily commuting. Background Technology

[0002] As public awareness of safety increases, the demand for personal security devices is growing, but existing technologies have the following shortcomings:

[0003] Existing lightning warning devices are mostly in the form of wristbands or handheld weather stations, with limited functions, only able to warn of lightning. They are not integrated into wearable devices such as belts or watches worn daily, making them easy to forget to carry when working outdoors, and their portability is obviously insufficient.

[0004] At the same time, existing anti-spy camera and anti-eavesdropping devices are all handheld, which are inconvenient to carry when traveling for business or leisure, and their exposure can easily lead to social embarrassment. As a result, the actual usage rate in scenarios such as hotels and homestays has been low for a long time, and the risk of user privacy leakage remains high.

[0005] On the other hand, existing multifunctional wearable devices (such as smartwatches and smart bracelets) generally adopt a feature-stacking design, with multiple antennas and modules resulting in thicker and heavier devices with poor wearing comfort; moreover, they force users to include functions they don't need, leading to resource waste and increased costs. It is particularly noteworthy that the antenna design of smartwatches is a global challenge—when worn on the wrist, the human body significantly attenuates the signal, and the internal space of a watch is extremely limited, making it difficult to accommodate multiple antennas.

[0006] In addition, most existing wearable devices are made of animal leather, electroplated hardware, and non-environmentally friendly plastics, which do not conform to the trend of green consumption and corporate ESG procurement requirements, and have a large environmental burden after being discarded.

[0007] More importantly, there is currently no solution that integrates lightning warning (weather security), anti-spy camera (business travel security), anti-eavesdropping (information security), and emergency rescue (personal safety) into everyday wearable devices (belts, watches, bracelets, etc.). This makes it impossible to simultaneously cover the safety needs of multiple scenarios such as outdoor activities, business travel, and daily travel, and users often need to purchase multiple devices repeatedly.

[0008] Furthermore, at the methodological level, existing wearable security devices have fixed functions and cannot switch detection priorities according to the scenario. Simultaneous activation of multiple functions leads to high power consumption, short battery life, and high false alarm rate. Existing wearable antenna reuse technologies are mostly concentrated in the same type of frequency band in the communication field (such as Bluetooth + WiFi + cellular), or the reuse of antennas and sensors (such as antennas also serving as touch sensors, and heart rate sensors also serving as antennas). It is generally believed in the field that the detection of different physical quantities (lightning electromagnetic pulse detection and radio frequency signal detection) requires separate antennas, and there is no solution that applies cross-frequency band antenna reuse technology to multiple types of security detection. Summary of the Invention

[0009] The purpose of this invention is to overcome the above-mentioned defects of the prior art and provide a multi-scenario composite detection smart wearable security device that is structurally simple, discreetly worn, functionally expandable, made entirely of environmentally friendly materials, and applicable to various wearable forms, as well as a corresponding multi-scenario graded early warning method.

[0010] To achieve the above objectives, the present invention adopts the following technical solution:

[0011] Firstly, a multi-scenario composite detection smart wearable security device is provided, comprising a wearable body and a functional unit disposed on the wearable body, wherein:

[0012] (1) The functional body is provided with a storage cavity, and a probe assembly is connected in the storage cavity through a hinge shaft or a sliding guide rail. The probe assembly has a storage position and a working position. In the storage position, the probe assembly is completely contained in the storage cavity, and its outer surface is flush with the outer surface of the functional body. In the working position, the probe assembly flips outward or slides out.

[0013] (2) The wearable body is embedded with a flexible composite antenna, and the functional body is also provided with a radio frequency switch module electrically connected to the flexible composite antenna; the radio frequency switch module is used to switch the working frequency band of the flexible composite antenna so that the same antenna can work in the lightning detection frequency band and the radio frequency detection frequency band in a time-division manner.

[0014] (3) The wearable body is provided with a magnetic expansion compartment, and the magnetic expansion compartment is provided with a magnetic power supply interface for detachably connecting the functional expansion module;

[0015] (4) The main functional unit is also provided with a main control module, a lightning sensing module and a radio frequency detection module. The lightning sensing module and the radio frequency detection module are connected to the flexible composite antenna through the radio frequency switch module. The main control module is electrically connected to the lightning sensing module, the radio frequency detection module and the detection head assembly respectively.

[0016] Furthermore, the smart wearable safety device can be any one of a belt, watch, bracelet, name tag, necklace, or armband; when the smart wearable safety device is a belt, the main functional component is a belt buckle; when the smart wearable safety device is a watch, the main functional component is the watch body, and the wearable body is the watch strap.

[0017] Furthermore, the probe assembly includes a housing, an infrared emitting tube, an infrared receiving sensor, and a supplementary light; the infrared emitting tube and the infrared receiving sensor are correspondingly arranged to detect the characteristic reflections of pinhole cameras based on the cat's eye effect.

[0018] Furthermore, the flexible composite antenna is a halogen-free substrate FPC broadband antenna, covering a lightning detection band of 100kHz–1MHz and a radio frequency detection band of 20MHz–6GHz; the radio frequency switch module is a broadband radio frequency switch with an insertion loss ≤0.5dB and a switching time ≤1μs.

[0019] Furthermore, the main control module is connected to a vibration alert unit and a buzzer, which are used to output graded vibration and buzzer alerts according to the lightning distance and radio frequency signal strength; the side of the main functional unit is provided with a hidden press button, which is used to control the pop-up and retraction of the probe assembly, as well as to trigger the one-click emergency call function.

[0020] Furthermore, the magnetic expansion compartment integrates a positioning module and a one-button emergency call unit. The one-button emergency call unit is electrically connected to the positioning module and is used to obtain location information and send it to a preset emergency contact.

[0021] Furthermore, the functional expansion module is any one of the following: Beidou short message module, hazardous gas detection module, and audio recording and evidence collection module; the outer shell of the functional expansion module is equipped with a magnetic connector that matches the magnetic power supply interface, and after being connected, it is automatically recognized by the main control module and the corresponding function is enabled.

[0022] Furthermore, the outer layer of the wearable body is a recycled polyurethane layer, a recycled nylon layer, or a recycled polyester layer, and the outer shell of the functional body is a recycled aluminum alloy shell or a recycled plastic shell, which complies with the requirements of the EU RoHS environmental directive.

[0023] Secondly, a multi-scenario hierarchical early warning method based on the above-mentioned equipment is provided, including the following steps:

[0024] S1. Mode Selection: Based on user instructions or by obtaining location information through communication with the mobile terminal to identify the current scene, switch working modes, including business travel mode, outdoor mode, and daily mode.

[0025] S2, Antenna Frequency Band Switching: The main control module controls the RF switch module to make the flexible composite antenna work in the corresponding mode frequency band; - Business Travel Mode: Switch to the RF detection frequency band and prioritize the activation of anti-spy camera and anti-eavesdropping detection; - Outdoor Mode: Switch to the lightning detection frequency band and prioritize the activation of lightning proximity warning; - Daily Mode: Alternately switch between the two frequency bands in a time-sharing manner to balance basic security and low power consumption.

[0026] S3. Signal Acquisition and Judgment: The lightning sensing module acquires the lightning electromagnetic pulse signal and calculates the lightning strike distance, while the radio frequency detection module acquires the radio frequency signal strength. The signals are compared with their respective preset thresholds to determine the danger level.

[0027] S4. Tiered warning output: Based on the level of danger, output vibration or buzzer alerts of corresponding intensity, or link with mobile APP to push warning information and risk avoidance suggestions.

[0028] The beneficial effects of this invention are as follows:

[0029] First, this invention is highly concealed. Once stowed, the detector head looks exactly like a regular wearable device, making it seamless for everyday wear. This solves the industry pain points of inconvenient carrying and awkward exposure of handheld detection devices, significantly increasing the actual utilization rate of business travel security equipment.

[0030] Secondly, the invention features a streamlined and lightweight structure. A single flexible composite antenna uses a radio frequency switch to time-division multiplex the lightning detection band and the radio frequency detection band, reducing the number of built-in antennas. In particular, it solves the global problem of extremely limited internal space in smartwatches and signal attenuation caused by the human body. The device thickness is comparable to that of ordinary wearable devices, providing high wearing comfort while reducing material consumption.

[0031] This invention also features versatility in multiple forms and multiple uses. The same technical solution can be applied to various wearable forms such as belts, watches, bracelets, and name tags, while covering outdoor lightning warnings, business travel anti-spy camera and anti-eavesdropping, and daily emergency rescue. Users do not need to purchase multiple devices repeatedly, significantly reducing the overall cost of use.

[0032] In terms of functional expansion, the present invention adopts a magnetic modular design, which allows users to select functions such as Beidou short message service, harmful gas detection, and audio recording as needed, avoiding paying for unnecessary functions and reserving ample space for subsequent product iterations.

[0033] This invention utilizes scenario-based mode switching and antenna time-division multiplexing to prioritize the activation of corresponding detection functions and shut down unnecessary channels in different scenarios, effectively extending battery life. At the same time, it sets corresponding signal thresholds and filtering rules for different scenarios to automatically filter conventional civilian signals and reduce false alarm rates.

[0034] Finally, all products of this invention are made of recyclable and renewable environmentally friendly materials, free of heavy metals and animal-derived materials, comply with global environmental compliance requirements, are compatible with corporate ESG procurement standards, and have a small environmental burden after disposal. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall structure of the smart wearable safety device of the present invention (taking a belt as an example).

[0036] Figure 2 This is a cross-sectional structural diagram of the main functional housing cavity and the probe assembly (in the housing state, flipped up).

[0037] Figure 3 A cross-sectional structural diagram of the main functional housing cavity and the probe assembly (working state, flip-up type);

[0038] Figure 4 This is a schematic diagram of the layered structure of the wearable device.

[0039] Figure 5 This is a schematic diagram of the connection structure between the magnetic expansion compartment and the functional expansion module.

[0040] Figure 6 This is a flowchart of the multi-scenario hierarchical early warning method of the present invention;

[0041] Figure 7 A logic block diagram for graded early warning of lightning detection;

[0042] Figure 8 This is a block diagram of the radio frequency detection and positioning guidance logic.

[0043] Figure 9 This is a schematic diagram of the overall structure of the smart wearable security device of the present invention (taking a watch as an example).

[0044] Figure 10 This is a schematic cross-sectional view of the layered structure of the antenna on a watch strap.

[0045] Explanation of reference numerals in the attached figures

[0046] 1-Wearable main body; 2-Functional main body; 3-Storage cavity; 4-Detector head assembly; 5-Flexible composite antenna; 6-RF switch module; 7-Magnetic expansion compartment; 8-Magnetic power supply interface; 9-Main control module; 10-Lightning sensor module; 11-RF detection module; 12-Vibration reminder unit; 13-Hidden push button; 14-Functional expansion module; 15-Hinge shaft; 16-Reset spring; 17-Positioning buckle; 1a-Outer finishing layer; 1b-Intermediate load-bearing base; 1c-Inner skin-friendly fabric layer; 18-Watch body; 19-Watch strap; 20-Watch buckle; 21-Watch dial. Detailed Implementation

[0047] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0048] Example 1: Belt Version

[0049] This embodiment targets business travelers and outdoor workers, integrating the aforementioned multi-scenario composite detection technology into a belt. The overall structure is as follows: Figures 1 to 5 .

[0050] like Figure 1 As shown, the smart safety belt in this embodiment includes a wearable body 1 (belt body) and a functional body 2 (belt buckle) disposed at one end of the wearable body 1.

[0051] Belt Body 1: Made of recycled polyurethane (recycled PU) material, granulated from recycled PU particles, with a bottom layer of recycled polyester non-woven fabric, compliant with RoHS environmental standards. The belt is 35mm wide and 2.2mm thick. Figure 4 As shown, the belt body 1 has a three-layer composite structure: the outer layer is a recycled PU finish 1a, the middle layer is a supporting substrate 1b, and the inner layer is a skin-friendly fabric 1c. The flexible composite antenna 5 is embedded in the middle supporting substrate 1b and is fixed by bonding with environmentally friendly water-based adhesive.

[0052] The flexible composite antenna 5 is a halogen-free substrate FPC broadband antenna with a thickness of 0.1 mm, covering a frequency band of 100 kHz–6 GHz, of which the 100 kHz–1 MHz band is used for lightning detection and the 20 MHz–6 GHz band is used for radio frequency detection. Electrode contacts are provided at both ends of the antenna, which are electrically connected to the circuit board inside the belt buckle 2 via spring-loaded pins.

[0053] Belt Buckle 2: Made of 6061 series recycled aluminum alloy, it is 100% recyclable and remeltable. The surface is ceramic anodized, with no hexavalent chromium or lead plating, and complies with RoHS environmental directives. Belt Buckle 2 measures approximately 80mm × 40mm × 10mm.

[0054] like Figure 2 and Figure 3 As shown, the belt buckle 2 has a storage cavity 3 (flip-out storage cavity) inside, and a probe assembly 4 is hinged to the storage cavity 3 via a hinge shaft 15. A return spring 16 is sleeved on the hinge shaft 15, and a positioning buckle 17 is provided on the inner wall of the storage cavity 3. The probe assembly 4 has a storage position and a working position: in the storage position ( Figure 2 When the detector head assembly 4 is fully housed within the storage cavity 3, the positioning buckle 17 locks the detector head assembly 4 in place, and the outer surface of the detector head assembly 4 is flush with the outer surface of the belt buckle 2, appearing no different from an ordinary belt buckle; in the working position ( Figure 3When the hidden button 13 is pressed, the positioning buckle 17 is released, and the reset spring 16 drives the probe assembly 4 to flip outward around the hinge axis 15 and pop out. The flip angle is 0–90° and can be manually adjusted to a suitable detection angle.

[0055] Considering that 940nm infrared light can effectively avoid visible light interference, when the beam shines on the lens of a pinhole camera, the lens coating produces a characteristic reflection. The photosensitive receiving sensor identifies this reflection and outputs a detection signal. Theoretically, in low light or typical indoor environments, the detection distance can reach 3–5m, and it can identify typical pinhole cameras (lens diameter 0.8–3mm).

[0056] Circuit module: The belt buckle 2 internally encapsulates the main control board, which integrates: (1) Main control module 9: using STM32G030F6P6 low power MCU; (2) Lightning sensor module 10: using AS3935 lightning sensor; (3) Radio frequency detection module 11: using AD8318 logarithmic detector; (4) Radio frequency switch module 6: using PE4259 broadband radio frequency switch; (5) Vibration reminder unit 12: using 0834 flat vibration motor; (6) Buzzer: passive surface mount buzzer; (7) Battery: CR2032 mercury-free button battery; (8) Bluetooth module: BLE 5.0 low power Bluetooth.

[0057] Hidden press button 13: Located on the side of the belt buckle 2, flush with the surface of the belt buckle. A short press controls the pop-up and retraction of the probe component 4, and a long press for 3 seconds triggers the one-key SOS function.

[0058] Magnetic expansion compartment 7: such as Figure 5 As shown, the recessed housing is located on the inner side of the belt body 1 near the belt buckle. It protrudes approximately 4mm from the inner surface of the belt, with overall dimensions of approximately 30mm × 20mm × 6mm. The housing contains a magnetic power supply interface 8 (2P magnetic male connector). The magnetic expansion compartment 7 integrates a GPS positioning module and a one-button emergency call unit.

[0059] Functional expansion module 14: This is an independent modular unit, with optional Beidou short message module, hazardous gas detection module, and audio recording and evidence collection module.

[0060] Working principle: (1) Lightning warning: In outdoor mode, the RF switch connects the antenna to the lightning sensing module. The AS3935 collects the lightning electromagnetic pulse signal, calculates the lightning strike distance and direction, and provides graded warnings; (2) Anti-spy camera detection: In business travel mode, the detector head assembly pops out, and the infrared emitting tube emits 940nm infrared light to identify lens feature reflections; (3) Anti-eavesdropping detection: In business travel mode, the RF switch connects the antenna to the RF detection module. The AD8318 scans the 20MHz–6GHz frequency band to identify abnormal wireless signals; (4) One-click SOS: Press and hold the button for 3 seconds to trigger the location and SOS message transmission.

[0061] Example 2: Smartwatch Version

[0062] This embodiment targets business travelers and outdoor sports enthusiasts, integrating the aforementioned multi-scenario composite detection technology into a smartwatch. The overall structure is as follows: Figure 9 and Figure 10 .

[0063] like Figure 9 As shown, the smart security watch of this embodiment includes a wearable body 1 (watch strap 19) and a functional body 2 (watch body 18) disposed on the watch strap. The watch body 18 is provided with a watch face 21, and the end of the watch strap 19 is provided with a buckle 20.

[0064] Watch body 18: Made of recycled aluminum alloy or recycled plastic, measuring approximately 45mm × 38mm × 12mm. The watch body 18 has a storage cavity 3 (sliding storage cavity) on its side. The probe assembly 4 uses a sliding storage structure (replacing the flip storage of the belt version, adapting to the small space of the watch). It pops out when pressed, and is flush with the surface of the watch body 18 when stored. The sliding storage structure includes a sliding guide rail, a return spring, and a positioning buckle. Pressing the hidden button 13 releases the positioning buckle, and the return spring drives the probe assembly 4 to slide outward along the sliding guide rail. The extension length can be manually adjusted during operation.

[0065] The probe assembly 4 includes a miniature housing, a 940nm infrared emitter, a high-sensitivity photosensitive receiver sensor, and a miniature LED fill light, and detects pinhole cameras based on the cat's eye effect. Due to the limited space in the watch, the probe assembly 4 measures approximately 10mm × 6mm × 4mm, has a detection distance of 2–4m, and can identify typical pinhole cameras.

[0066] Strap 19: Made of recycled polyurethane or recycled nylon, 22mm wide and 2.0mm thick. (Example: ...) Figure 10 As shown, the watchband 19 has a three-layer composite structure: the outer layer is a recycled PU finish 1a, the middle layer is a supporting substrate 1b, and the inner layer is a skin-friendly fabric 1c. The flexible composite antenna 5 is embedded in the middle supporting substrate 1b, covering 100kHz–6GHz, and is electrically connected to the main control board inside the watch body 18 via a spring pin. The single-antenna time-division multiplexing design solves the global problem of extremely limited internal space in smartwatches, making it difficult to accommodate multiple antennas, while also reducing the attenuation effect of the human body on the signal.

[0067] Circuit modules: The main control board inside the meter body 18 integrates the main control module 9 (STM32G030), lightning sensor module 10 (AS3935), RF detection module 11 (AD8318), RF switch module 6 (PE4259), vibration motor, buzzer, Bluetooth module, and rechargeable lithium polymer battery (capacity 150mAh, magnetic charging, standby time of about 7 days).

[0068] Magnetic expansion compartment 7: Located at the end of the watch strap 19 or on the side of the watch body 18, it uses a magnetic interface to connect to functional expansion modules (such as Beidou short message service, hazardous gas detection, and audio recording). The expansion module can be made into a strap buckle, attaching to the end of the strap without affecting normal wear of the watch.

[0069] In use, the watch version utilizes a single antenna with time-division multiplexing to provide lightning warnings and anti-eavesdropping detection, slides to retract the detector head for anti-spy camera detection, and uses a magnetic expansion slot for functional expansion. Notably, this version can also integrate with the watch's existing health monitoring functions (heart rate, blood oxygen, sleep, etc.) to achieve a unified security and health monitoring solution.

[0070] Example 3: Smart Bracelet Version

[0071] This embodiment is designed for daily commuters and light outdoor users, integrating the aforementioned multi-scenario composite detection technology into a smart bracelet.

[0072] The wristband body is made of recycled TPU or recycled silicone, with a width of 18mm and a thickness of 1.8mm. The flexible composite antenna 5 is embedded in the wristband body, covering 100kHz–6GHz.

[0073] Main functional unit (wristband body): Made of recycled plastic, approximately 40mm × 25mm × 10mm in size. A sliding storage cavity is located on the side of the main unit, and the probe assembly 4 uses a sliding storage structure. Due to the limited space in the wristband compared to a watch, the probe assembly 4 measures approximately 8mm × 5mm × 3mm, with a detection distance of 1–3m.

[0074] Circuit module: integrates STM32G030 main controller, AS3935 lightning sensor, AD8318 RF detection, PE4259 RF switch, vibration motor, Bluetooth module, and rechargeable battery (100mAh capacity, magnetic charging, standby time of about 10 days).

[0075] Magnetic expansion compartment: Located at the end of the wristband, it connects to a small expansion module.

[0076] The working principle of the wristband version is basically the same as that of the belt and watch versions, emphasizing its lightweight and portable design, making it suitable for daily commutes. Theoretically, the lightning warning and anti-eavesdropping functions can run silently in the background with low power consumption, while the anti-spy camera function is activated as needed.

[0077] Example 4: Multi-scenario hierarchical early warning method

[0078] This embodiment, based on the aforementioned hardware system, details the specific process of the multi-scenario hierarchical early warning method, referring to... Figures 6 to 8 .

[0079] S1. Mode Selection: Users can manually select the work mode via the mobile APP, or the system can obtain the phone's location and time information via Bluetooth and automatically identify the scene: when located in a hotel, train station, airport, etc. → automatically switch to business travel mode; when located in the countryside, mountains, construction site, etc. → automatically switch to outdoor mode; other places → default daily mode.

[0080] S2. Antenna Frequency Band Switching: Based on the selected mode, the main control module 9 controls the RF switch module 6 via GPIO to switch the connection path of the flexible composite antenna 5: —Business Travel Mode: The RF switch connects to the RF detection module 11, the antenna operates in the 20MHz–6GHz RF detection band, and the lightning sensor module 10 enters sleep mode; simultaneously, the infrared detection function of the detector assembly 4 is activated. —Outdoor Mode: The RF switch connects to the lightning sensor module 10, the antenna operates in the 100kHz–1MHz lightning detection band, and the RF detection module 11 enters low-power standby (scanning only once every 5 minutes). —Daily Mode: The RF switch alternates between the lightning detection band and the RF detection band every 30 seconds, using time-division multiplexing to balance basic security and low power consumption.

[0081] S3. Signal Acquisition and Judgment: Lightning Detection Judgment Logic (Refer to...) Figure 7 The AS3935 collects lightning electromagnetic pulses and outputs the lightning strike distance value. The main control module 9 compares this value with preset thresholds: distance 40–20km → Level 1 warning; distance 20–10km → Level 2 warning; distance ≤10km → Level 3 warning. Simultaneously, the AS3935 has a built-in interference identification algorithm that automatically filters out man-made electromagnetic interference such as from car ignition and motor brushes, reducing false alarms.

[0082] Radio frequency detection and judgment logic (refer to) Figure 8 The AD8318 outputs a logarithmic voltage of the signal strength. The main control module 9 scans the 20MHz–6GHz frequency band in 100kHz steps, recording the signal strength at each frequency point. The software has a built-in library of common civilian signal frequencies (2.4G WiFi, 5G WiFi, Bluetooth, FM radio, and mobile communication bands), automatically filtering known signals in these bands. For remaining suspicious signals, if the strength exceeds a preset threshold (default -50dBm, adjustable), it is considered suspicious.

[0083] S4. Tiered Early Warning Output: —Level 1 Lightning Warning: The vibration motor vibrates briefly once (0.5 seconds), and the mobile app pushes a message: "Lightning in the distance, be careful." —Level 2 Lightning Warning: The vibration motor vibrates briefly three times in succession, and the mobile app pushes a message: "Lightning is approaching, it is recommended to find a place to take shelter from lightning." —Level 3 Lightning Warning: The vibration motor vibrates continuously with strong vibrations, and the buzzer sounds continuously. The mobile app pushes a message: "Lightning danger! Immediately move away from open areas, tall trees, and utility poles, and enter the nearest building or vehicle," and displays nearby safe locations. —Suspicious Radio Frequency Signal: The vibration frequency of the vibration motor increases with the signal strength (similar to the feedback of a metal detector), guiding the user to rotate the device to locate the signal source; the stronger the signal, the faster the vibration, and the buzzer sounds after the device is located.

[0084] S5, One-click SOS (independent of the graded early warning emergency process): Press and hold the hidden button 13 for 3 seconds to trigger one-click SOS: The main control module 9 starts GPS / BeiDou positioning to obtain the current coordinates; it sends an SOS command to the mobile APP via Bluetooth, and the mobile phone automatically sends a location SMS and environmental recording (10 seconds of recording) to the preset emergency contact; if the BeiDou short message module is selected and there is no mobile phone signal, it sends the location and SOS information to the preset number via BeiDou short message.

[0085] Comparative Example

[0086] To further illustrate the technical effects of the present invention, three comparative examples that do not employ the technical solutions of the present invention are listed below and compared with Example 1.

[0087] Comparative Example 1: Dual-antenna solution. A lightning detection antenna and a radio frequency (RF) detection antenna are respectively installed within the wearable device. The two antennas operate independently, without an RF switch module. It is anticipated that the dual-antenna solution would require two FPC antennas to be arranged within a 2.2mm thick belt or 2.0mm thick watch strap, with a minimum 5mm gap between the antennas to avoid mutual coupling. This would increase the total device thickness to over 3.5mm, significantly reducing wearing comfort; furthermore, the material cost of two antennas would increase by approximately 40% compared to the single-antenna solution. This invention solves the bulkiness problem of the dual-antenna solution by using a single antenna with time-division multiplexing, achieving two detection functions within a 2.2mm thickness, and particularly addresses the global challenge of extremely limited internal space in smartwatches.

[0088] Comparative Example 2: Exposed Detector Head Solution. The infrared detector head is fixedly mounted on the surface of the main body without a storage cavity. With this solution, the detector head protrudes noticeably from the device surface during daily wear, resulting in an obtrusive appearance that is easily noticed in business settings. Furthermore, the exposed detector head is susceptible to damage from impacts. This invention solves these problems by using a storage structure that allows the detector head to be stored flush with the device surface.

[0089] Comparative Example 3: Fixed Function Solution. All functions—lightning warning, anti-spy camera, anti-eavesdropping, and emergency call—are fixedly integrated into the device, without a magnetic expansion slot. This solution forces different users to pay for functions they don't need, resulting in high product costs and preventing future upgrades. This invention, through a magnetic modular expansion slot, allows users to select and add function modules as needed, balancing the cost of the basic model with the potential for product iteration.

[0090] Table 1 Performance comparison between Example 1 and the comparative example

[0091] Comparison items Example 1 (Invention) Comparative Example 1 (Dual Antenna Scheme) Comparative Example 2 (Exposed Probe Scheme) Comparative Example 3 (Fixed Function Scheme) Total thickness of equipment ≤2.2mm ≥3.5mm ≤2.2mm ≤2.5mm Concealment of appearance Completely identical to ordinary equipment Same as ordinary equipment The exposed probe head looks out of place. Same as ordinary equipment Lightning warning function Yes (AS3935, 0-40km) have none none Anti-spy camera function It has a (hidden storage sensor). none Exposed none Anti-eavesdropping function Available (full-band 20MHz-6GHz) none none none One-click SOS function It has (GPS positioning + Bluetooth linkage) none none have Scene adaptability Belt / watch / bracelet multi-form Only one form Only one form Only one form Number of antennas 1 FPC (Time-Division Multiplexing) 2 FPCs (Independent Channels) 1 FPC 1 FPC Functional flexibility Magnetic modules are optional. Fixed and non-scalable Fixed and non-scalable Fixed and non-scalable Overall User Cost Low (basic model + expansion as needed) High (dual antennas + thick equipment) Middle (exposed and easily damaged) High (Forced Full Functionality)

[0092] As shown in Table 1, this invention solves the three technical problems of concealment, thinness and flexibility through the synergistic combination of three technical features: retractable probe, single antenna time-division multiplexing and magnetic modular expansion. It can be applied to various wearable forms such as belts, watches and bracelets. The overall effect is better than each of the pairs, and it is not a simple superposition of existing technologies.

[0093] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A multi-scenario composite detection intelligent wearable security device, comprising a wearable body (1) and a functional main body (2) disposed on the wearable body, characterized in that: The functional body (2) is provided with a storage cavity (3), and a probe assembly (4) is connected to the storage cavity (3) through a hinge shaft or a sliding guide rail. The probe assembly (4) has a storage position and a working position. In the storage position, the probe assembly (4) is completely contained in the storage cavity (3), and its outer surface is flush with the outer surface of the functional body (2). In the working position, the probe assembly (4) flips outward or slides out. The wearable body (1) is embedded with a flexible composite antenna (5), and the functional body (2) is also provided with a radio frequency switch module (6) electrically connected to the flexible composite antenna (5); the radio frequency switch module (6) is used to switch the working frequency band of the flexible composite antenna (5) so that the same antenna works in the lightning detection frequency band and the radio frequency detection frequency band in a time-division manner. The main functional unit (2) is also equipped with a main control module (9), a lightning sensing module (10), and a radio frequency detection module (11); the lightning sensing module (10) and the radio frequency detection module (11) are connected to the flexible composite antenna (5) through the radio frequency switch module (6), and the main control module (9) is electrically connected to the lightning sensing module (10), the radio frequency detection module (11), and the detector head assembly (4) respectively; The wearable body (1) is provided with a magnetic expansion compartment (7), and the magnetic expansion compartment (7) is provided with a magnetic power supply interface (8) for detachably connecting the functional expansion module (14).

2. The device according to claim 1, characterized in that, The smart wearable safety device is any one of a belt, watch, bracelet, name tag, necklace, or armband; when the smart wearable safety device is a belt, the functional body (2) is a belt buckle; when the smart wearable safety device is a watch, the functional body (2) is the watch body, and the wearable body (1) is the watch strap.

3. The device according to claim 1, characterized in that, The probe assembly (4) includes a housing, an infrared emitting tube, an infrared receiving sensor, and a supplementary light; the infrared emitting tube and the infrared receiving sensor are configured to detect the characteristic reflection of the pinhole camera based on the cat's eye effect.

4. The device according to claim 1, characterized in that, The flexible composite antenna (5) is a halogen-free substrate FPC broadband antenna, covering a lightning detection band of 100kHz–1MHz and a radio frequency detection band of 20MHz–6GHz; the radio frequency switch module (6) is a broadband radio frequency switch with an insertion loss ≤0.5dB and a switching time ≤1μs.

5. The device according to claim 1, characterized in that, The main control module (9) is connected to a vibration reminder unit (12) and a buzzer, which is used to output graded vibration and buzzer reminders according to the lightning distance and radio frequency signal strength; the side of the main body (2) is provided with a hidden press button (13), which is used to control the pop-up and retraction of the probe assembly (4) and to trigger the one-click rescue function.

6. The device according to claim 1, characterized in that, The magnetic expansion compartment (7) integrates a positioning module and a one-button emergency call unit. The one-button emergency call unit is electrically connected to the positioning module and is used to obtain location information and send it to a preset emergency contact.

7. The device according to claim 1, characterized in that, The functional expansion module (14) is any one of the Beidou short message module, harmful gas detection module, and audio recording and evidence collection module; the outer shell of the functional expansion module (14) is equipped with a magnetic connector that matches the magnetic power supply interface (8), and after being connected, it is automatically recognized by the main control module (9) and the corresponding function is enabled.

8. The device according to claim 1, characterized in that, The outer layer of the wearable body (1) is a recycled polyurethane layer, a recycled nylon layer or a recycled polyester layer, and the outer shell of the functional body (2) is a recycled aluminum alloy shell or a recycled plastic shell, which complies with the requirements of the EU RoHS environmental directive.

9. A multi-scenario hierarchical early warning method based on the device described in claim 1, characterized in that, Includes the following steps: S1. Mode Selection: Based on user instructions or by obtaining location information through communication with the mobile terminal to identify the current scene, switch working modes, including business travel mode, outdoor mode, and daily mode. S2, Antenna frequency band switching: The main control module (9) controls the radio frequency switch module (6) to make the flexible composite antenna (5) work in the corresponding mode frequency band; —Business travel mode: Switch to radio frequency detection band and prioritize anti-spy camera and anti-eavesdropping detection; —Outdoor mode: Switch to the lightning detection frequency band and prioritize the activation of lightning proximity warning; —Daily mode: The two frequency bands are switched alternately in a time-sharing manner, taking into account both basic security and low power consumption; S3. Signal Acquisition and Judgment: The lightning sensing module acquires the lightning electromagnetic pulse signal and calculates the lightning strike distance, while the radio frequency detection module acquires the radio frequency signal strength. The signals are compared with their respective preset thresholds to determine the danger level. S4. Tiered warning output: Based on the level of danger, output vibration or buzzer alerts of corresponding intensity, or link with mobile APP to push warning information and risk avoidance suggestions.

10. The method according to claim 9, characterized in that, The determination logic for lightning detection in step S3 is as follows: —Level 1 Warning: Cloud-to-ground lightning detected within a range of 40–20km, outputting a weak vibration alert; —Level 2 Warning: Cloud-to-ground lightning is detected within a range of 20–10 km, and a strong vibration alert is issued; —Level 3 warning: When cloud-to-ground lightning is detected within 10km, continuous strong vibration and buzzer warning are output, and the nearest safe place is pushed to the system.

11. The method according to claim 9, characterized in that, The determination logic for radio frequency detection in step S3 is as follows: It scans signals in the 20MHz–6GHz frequency band to identify the frequency and strength of suspicious wireless signals. The preset threshold can be adjusted within the range of -60dBm to -40dBm according to environmental sensitivity. When the signal strength exceeds the preset threshold, it indicates the signal direction through changes in vibration frequency, guiding the user to locate eavesdropping or hidden camera devices. At the same time, it automatically filters regular WiFi and Bluetooth signals to reduce the false alarm rate.

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