Active pneumatic adsorption type intelligent anti-falling shoes

Abstract

This invention relates to an active pneumatic adsorption intelligent anti-fall shoe, addressing problems such as high failure rate of traditional anti-slip shoes in wet conditions, high false alarm rate of intelligent shoes, lack of active intervention capability, ankle injury caused by adsorption, limited alarm contact options, inability to link and upgrade warnings, and high operating noise. The key features of this intelligent anti-fall shoe are: a shoe body, a sole structure, an intelligent monitoring and control system, a pneumatic adsorption execution system, and a circuit control system. The circuit control system includes a graded warning module, a remote alarm module, an ankle safety protection module, a power supply module, and a wireless communication module. The shoe body is equipped with a charging port and a power indicator light. The intelligent monitoring and control system includes a multimodal sensor unit, a processing chip unit, a posture slope calculation unit, a data storage unit, and a clock unit. The remote alarm module outputs a remote alarm signal and is linked to a mobile phone number. The pneumatic adsorption execution system only performs the pneumatic adsorption action when the secondary critical fall warning set by the graded warning module is activated.

Description

Technical Field

[0001] This invention relates to anti-fall shoes, and more particularly to an active pneumatic adsorption type intelligent anti-fall shoe. Background Technology

[0002] With the accelerating aging of the global population, falls have become the leading cause of injury-related death among people over 60 years of age. In my country, the annual fall rate among the elderly exceeds 30%, with over 75% of these falls caused by slippery surfaces or sudden loss of balance. Existing fall prevention products have significant shortcomings: (I) Traditional passive anti-slip shoes for the elderly: These rely solely on the sole's texture and material to increase the coefficient of friction, resulting in a 60%-80% failure rate on wet, oily, or mossy surfaces, making them ineffective in dealing with sudden loss of balance. (II) Traditional smart fall monitoring shoes / bracelets: These often use a single sensor (such as an accelerometer) and simple threshold algorithms, resulting in a comprehensive misjudgment rate of 30%-45% (false alarm rate 25%-35%, false alarm rate 15%-25%). They frequently misjudge everyday actions such as bending over, squatting, and lifting legs as falls, and can only issue alarms after the fact, failing to proactively intervene in the pre-fall warning stages. (III) Existing active anti-slip solutions (such as high-voltage electrostatic adsorption): The output voltage reaches 2.5-3kV. In humid environments, the adsorption force decreases by more than 80% due to short circuits in the water film. Furthermore, there are concerns about high-voltage electric shock among users, raising safety concerns. (IV) Insufficient alarm mechanism coverage: Existing products typically only support 1-2 emergency contacts, failing to cover key rescue forces such as community property management and building managers. (V) Continuous adsorption leading to secondary injuries: If strong adsorption is maintained even when the body is severely tilted (e.g., >35°), it can easily lead to ankle strain, sprains, or even fractures. Currently, no product can simultaneously achieve: multimodal high-precision fall warning recognition, active anti-slip intervention (especially in slippery scenarios), safe detachment in the event of an irreversible fall, community-based emergency communication for up to 6 parties, ultra-quiet daily wearability, and IP68 durability. Therefore, there is an urgent need to design a complete system-level product to solve the above problems. Summary of the Invention

[0003] To address the aforementioned shortcomings of existing technologies, this invention provides an active pneumatic adsorption-type intelligent anti-fall shoe. It solves problems such as high failure rate of traditional anti-slip shoes in wet conditions, high misjudgment rate of intelligent shoes, lack of active intervention capabilities, ankle injury caused by adsorption, limited alarm contact options, inability to link and upgrade warnings, and high operating noise. It achieves high-precision identification of fall warning signs, a three-level warning system, automatic escalation of a level two warning to a level three warning, mandatory remote alarm for level three warnings, multi-party community emergency communication, active pneumatic anti-slip, and automatic detachment of the ankle brace in the event of an irreversible fall, thereby reducing the risk of falls and secondary injuries at the source. This objective is achieved through the following technical solution.

[0004] An active pneumatic adsorption intelligent anti-fall shoe is characterized by comprising a shoe body, a sole structure, an intelligent monitoring and control system, a pneumatic adsorption execution system, and a circuit control system. The circuit control system includes a graded early warning module, a remote alarm module, an ankle safety protection module, a power supply module, and a wireless communication module. The shoe body is equipped with a charging port and a power indicator light. The intelligent monitoring and control system includes a multimodal sensor unit, a processing chip unit, a posture slope calculation unit, a data storage unit, and a clock unit. The false alarm rate and false negative rate of the intelligent monitoring and control system are less than 1.5%. The graded early warning module is equipped with a first-level mild imbalance warning system. The system has three levels of warnings: Level 1 (critical fall warning), Level 2 (imminent fall warning), and Level 3 (dangerous fall warning). When the Level 2 critical fall warning determines that the imbalance is about to become an unavoidable fall, it automatically forwards the Level 3 warning signal. When the Level 3 warning is triggered, the remote alarm module outputs a remote alarm signal. The remote alarm module supports binding to up to 6 mobile phone numbers, including 1 community property management number, 1 building manager number, and 3 to 4 numbers of relatives and friends. The pneumatic adsorption system only performs pneumatic adsorption when the Level 2 critical fall warning is activated. The ankle safety protection module instantly cuts off the pneumatic adsorption to protect the ankle when it determines that a fall is unavoidable.

[0005] The circuit control system's graded early warning module includes a Level 1 mild imbalance warning and a Level 2 critical fall warning, which use shoe vibration and voice prompts to alert users without outputting remote signals. The Level 3 dangerous fall warning uses a wireless communication module to send alarm information containing the fall time and location to six bound mobile phone numbers.

[0006] The wireless communication module of the circuit control system adopts GSM / GPRS dual-mode communication and supports remote alarm via both SMS and APP channels.

[0007] Based on the aforementioned structural features, the intelligent anti-fall shoe includes a shoe body, a sole structure, an intelligent monitoring and control system, a pneumatic adsorption execution system, a circuit control system, and noise reduction components. The circuit control system includes a graded early warning module, a remote alarm module, an ankle safety protection module, a power supply module, and a wireless communication module. Each electrical module is potted and insulated, integrated into the inner cavity of the heel, with no exposed live parts, ensuring safe use. The multimodal sensor unit includes an eight-point plantar pressure array sensor, a three-axis angular acceleration sensor, a three-axis tilt sensor, a ground impedance detection sensor, and an environmental humidity sensor, which are used to collect real-time data on plantar pressure distribution, body posture angle, foot tilt slope, ground conductivity, and environmental humidity. The processing chip unit uses a low-power embedded microcontroller (MCU) with a built-in machine learning-based fall warning sign recognition and posture deterioration judgment algorithm, ensuring a fall warning sign recognition response time ≤138ms, a false alarm rate <1.5%, and a false negative rate <1%.

[0008] The graded early warning module is equipped with three levels of warnings and an intelligent linkage upgrade mechanism. 1. Level 1 Mild Imbalance Warning: Only triggers the in-shoe vibration motor and voice prompt module for local alerts, without sending any external signals. 2. Level 2 Critical Fall Warning: Triggers strong vibration and voice alerts, and activates the pneumatic adsorption system to provide active anti-slip; if the system continuously detects an escalating imbalance and predicts an unavoidable fall, it immediately and automatically forwards the Level 3 warning signal. 3. Level 3 Dangerous Fall Warning (Unavoidable): Mandatory emergency alarm signal must be output externally via the remote alarm module, simultaneously triggering local high-frequency vibration and voice alarms.

[0009] The remote alarm module enables dual-channel alarms via SMS and mobile application (APP) through a wireless communication module. It supports users to pre-bind up to 6 mobile phone numbers, including 1 community property number, 1 building manager number, and 4 family and friends numbers. The alarm information includes the fall event status, precise timestamp, and GPS or base station location.

[0010] The pneumatic adsorption system includes a miniature vacuum pump, a porous sponge suction cup, a solenoid valve, and noise reduction components. 1. The miniature vacuum pump is driven by a brushless DC motor with a rated operating voltage of 5V and operating noise ≤45dB(A). 2. The porous sponge suction cup is made of polyurethane material with a pore size of 10-50μm, a porosity of 30%-50%, and a thickness of 6-8mm. It is embedded in the anti-slip contact outer layer of the shoe sole structure, forming effective negative pressure adsorption on uneven, slightly damp, and dusty surfaces. 3. The pneumatic adsorption system is activated only during the secondary critical fall warning stage, and actual measurements show that it increases the coefficient of friction on wet, slippery tile surfaces from 0.4 to over 0.75.

[0011] The ankle safety protection module of the circuit control system is preset with a safety threshold of 35° for the inclination slope between the foot and the ground. When the real-time calculated inclination slope is ≤35°, the pneumatic adsorption system is maintained to provide anti-slip support. When the inclination slope is >35°, the system determines that a fall is inevitable and immediately controls the solenoid valve to cut off the vacuum path of the pneumatic adsorption and open the pressure relief channel within ≤10ms, so that the suction cup loses its adsorption force instantly, allowing the human body to fall naturally and avoiding ankle sprains or fractures due to forced fixation.

[0012] The noise reduction component includes a through-hole porous metal silencer and an acoustic vibration isolation cavity. The through-hole porous metal silencer is located at the air inlet and outlet of the micro vacuum pump to suppress airflow turbulence noise. The acoustic vibration isolation cavity is used to enclose the micro vacuum pump. The cavity of the acoustic vibration isolation cavity includes, from the inside to the outside, a rubber damping layer, an EVA sound-absorbing layer, and a sealed TPU shell, which effectively isolates structural vibration and air noise transmission.

[0013] The sole structure, from top to bottom, consists of a cushioning support layer, a dielectric insulation layer, an electrode conductive layer, and an anti-slip contact outer layer. The anti-slip contact outer layer is made of highly wear-resistant rubber composite material, with biomimetic fish-scale microgrooves 0.3mm deep and 1mm apart on the surface, and embedded with porous sponge suction cups. The entire shoe body achieves an IP68 protection rating, and the sole's bending life is ≥300,000 cycles. The power supply module of the circuit control system uses a 3.7V / 1000mAh rechargeable lithium polymer battery. The standby power consumption of the entire shoe body is ≤50mW, and the single-charge battery life is ≥72 hours. All electrical modules are potted and insulated, and the shoe is equipped with a Type-C charging port and an LED power indicator.

[0014] Its beneficial effects are as follows: 1. Industry-leading recognition accuracy: Multimodal fusion and algorithm model achieve a false alarm rate of <1.5% and a false negative rate of <1%, far superior to the traditional 30%-45% false judgment rate. 2. Active and effective intervention: Pneumatic adsorption remains effective in high-risk scenarios such as wet, slippery, and oily conditions, increasing the friction coefficient by more than 87%. 3. Dual safety protection mechanism: It prevents slipping where possible and desorbs if a fall is inevitable, completely eliminating secondary ankle injuries. 4. Comprehensive community rescue coverage: Supports alarms from property management, building managers, and multiple relatives and friends, significantly improving the golden rescue response speed. 5. Ultra-quiet daily experience: Integrated multi-layer noise reduction design, operating noise ≤43dB(A), lower than indoor background noise (45dB), ensuring no auditory interference for users. 6. High reliability in all scenarios: IP68 waterproof, 300,000 bending cycles lifespan, 72-hour battery life, suitable for long-term daily wear. 7. High technological barriers: It is the first to achieve a five-in-one closed loop of "perception-decision-execution-deattachment-alarm", filling an international gap and with significant market value.

[0015] The present invention features a reasonable structural design and high feasibility in production and use. It achieves technical challenges such as multimodal high-precision fall warning recognition, active anti-slip intervention (especially in wet and slippery scenarios), safe detachment in the event of an irreversible fall, multi-party community emergency communication, ultra-quiet daily wear, and IP68-level durability through a complete system-level product. It combines active fall protection and safe detachment functions, demonstrating outstanding originality and practicality, and is particularly suitable for the elderly and community-based elderly care scenarios. It is suitable for use as an active pneumatic adsorption smart anti-fall shoe and for structural improvements to similar products. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 yes Figure 1 The diagram shows the internal structure of the shoe sole from a top-down view, including the module connections of the road control system.

[0018] Figure 3 yes Figure 1The diagram shows the internal structure of the shoe sole in the right-view view, including the module connections of the road control system.

[0019] Attached figures and their names: 1. Shoe body, 2. Shoe sole structure, 201. Cushioning support layer, 202. Dielectric insulating layer, 203. Electrode conductive layer, 204. Anti-slip contact outer layer, 3. Intelligent monitoring and control system, 4. Pneumatic adsorption execution system, 5. Circuit control system, 6. Noise reduction components. Implementation

[0020] The structure and use of the present invention will now be further described with reference to the accompanying drawings. Figures 1-3 As shown, the working principle of this smart anti-fall shoe is as follows: 1. When the user walks normally, the system is in a low-power monitoring state. 2. When a slight imbalance is detected (such as a single foot slip of <10cm), a level one warning is triggered: local vibration + voice "Pay attention to balance". 3. If the imbalance worsens (such as a center of gravity shift >15cm and angular velocity >120° / s), a level two critical fall warning is triggered: strong vibration + voice "Be careful of falling" + activation of pneumatic adsorption; if the posture does not recover within 500ms and continues to deteriorate, it automatically upgrades to a level three warning. 4. When the tilt slope >35° or the system determines that the fall is irreversible, a level three warning is triggered. The level three warning sends alarm SMS messages and push notifications to up to 6 bound numbers via the GSM network according to the settings, and at the same time controls the solenoid valve to release pressure, releasing the adsorption within 5-10ms to protect the ankle. Example

[0021] The smart anti-fall shoe features a breathable flyknit upper and a sealed cavity in the heel to house the electrical modules. The components include: 1. A multimodal sensor unit: an eight-point Tekscan plantar pressure array, an MPU6050 triaxial angular acceleration sensor, a BNO055 triaxial tilt sensor, a custom ground impedance sensor, and an SHT30 ambient humidity sensor. 2. A processing chip unit: an STM32L476RG low-power MCU (low-power embedded microcontroller) running a self-developed fall warning recognition model, with a measured response time of 135ms, a false alarm rate of 1.2%, and a false negative rate of 0.8%. 3. A pneumatic adsorption actuator system: a Shenzhen Keruit KR-V03 micro vacuum pump (5V / 3W, noise 42dB(A)), a PiabBLG10x5 porous sponge suction cup (Φ10mm×6mm, porosity 40%), and an SMCVDW micro solenoid valve (response time 8ms). 4. Noise Reduction Components: Φ8mm sintered stainless steel silencers (straight-through multi-hole metal silencers) are installed at the air inlet / outlet; a miniature vacuum pump is integrally embedded in the acoustic vibration isolation cavity (inner layer 3mm silicone pad + middle layer 5mm EVA + outer layer 1.2mm TPU). 5. Remote Alarm Module: Supports binding 6 numbers (1 property management, 1 building manager, 4 family / friends), sending SMS messages and APP push notifications via the SIM800L module. 6. Sole Structure: The anti-slip outer layer is made of conductive rubber composite material with biomimetic fish scale microgrooves; the entire device is IP68 certified and has passed 400,000 bending tests without failure. 7. Power Supply Module: 3.7V / 1000mAh lithium battery, standby power consumption 45mW, tested battery life 75 hours. 8. Wireless Communication Module: Adopts GSM / GPRS dual-mode communication, working in conjunction with the remote alarm module.

[0022] Actual test results: On wet and slippery ceramic tiles (initial coefficient of friction 0.4), the coefficient of friction increased to 0.76 within 10ms after the pneumatic adsorption was started; when the simulated tilt angle was >35°, the system completed depressurization and desorption within 8ms without any ankle pulling sensation. Example

[0023] Based on Example 1, the remote alarm system of this smart anti-fall shoe is fully equipped with 6 phone numbers (1 property management, 1 building manager, and 4 relatives / friends); the processing chip unit of the circuit control system has reduced the false alarm rate to 1.0% and the missed alarm rate to 0.5% after algorithm optimization; the circuit control system adds a Bluetooth 5.0 module for linkage with the home gateway; the dielectric insulation layer of the sole structure is optimized with a nano-coating, reducing the overall power consumption and extending the battery life to 80 hours. The remaining structure and principle are basically the same as in Example 1, making it suitable for high-end community elderly care and high-risk people with mobility impairments.

[0024] In summary, this smart anti-fall shoe relates to the fields of smart wearable devices and elderly health protection technology. Specifically, it relates to a smart anti-fall shoe based on multimodal sensor fusion, featuring high-precision recognition of fall precursors, three-level graded early warning linkage, community-based remote emergency alarm, micro-pneumatic active anti-slip, ankle safety detachment, and ultra-quiet operation. It is especially suitable for the walking safety protection of the elderly and postoperative rehabilitation patients in community elderly care and home environments.

Claims

1. An active pneumatic adsorption type intelligent anti-fall shoe, characterized in that, The smart anti-fall shoe includes a shoe body (1), a sole structure (2), an intelligent monitoring and control system (3), a pneumatic adsorption execution system (4), and a circuit control system (5). The circuit control system (5) includes a graded early warning module, a remote alarm module, an ankle safety protection module, a power supply module, and a wireless communication module. The shoe body (1) is equipped with a charging interface and a power indicator light. The intelligent monitoring and control system (3) includes a multimodal sensor unit, a processing chip unit, an attitude slope calculation unit, a data storage unit, and a clock unit; the fall false alarm rate of the intelligent monitoring and control system (3) is less than 1.5%, and the false alarm rate is less than 1%. The graded early warning module sets up three levels of early warning: Level 1 mild imbalance warning, Level 2 critical fall warning, and Level 3 dangerous fall warning. Among them, when the Level 2 critical fall warning determines that the imbalance is about to turn into an unavoidable fall, it automatically forwards the Level 3 warning signal. When the Level 3 warning is triggered, the remote alarm module outputs a remote alarm signal. The remote alarm module supports binding up to 6 mobile phone numbers, including 1 community property management number, 1 building manager number, and 3 to 4 numbers of relatives and friends; The pneumatic adsorption actuator (4) performs the pneumatic adsorption action only when the secondary critical fall warning is activated; When the ankle safety protection module determines that a fall is unavoidable, it instantly cuts off the pneumatic suction to protect the ankle.

2. The active pneumatic adsorption intelligent anti-fall shoe according to claim 1, characterized in that, The multimodal sensor unit of the intelligent monitoring and control system (3) includes an eight-point plantar pressure array sensor, a three-axis angular acceleration sensor, a three-axis tilt sensor, a ground impedance detection sensor, and an environmental humidity sensor. The fall warning recognition response time is ≤138ms, the false alarm rate is <1.5%, and the missed alarm rate is <1%.

3. The active pneumatic adsorption intelligent anti-fall shoe according to claim 1, characterized in that, The graded early warning module of the circuit control system (5) provides first-level mild imbalance warning and second-level critical fall warning through vibration and voice reminders of the shoe body (1), without outputting remote signals to the outside; the third-level dangerous fall warning sends alarm information containing the fall time and location to 6 bound mobile phone numbers through the wireless communication module.

4. The active pneumatic adsorption intelligent anti-fall shoe according to claim 1, characterized in that, The ankle safety protection module of the circuit control system (5) presets a safety threshold of 35° for the inclination slope between the foot and the ground. If the inclination slope exceeds this threshold, it is determined that a fall is inevitable. The solenoid valve is immediately controlled to cut off the vacuum passage of the pneumatic adsorption and open the pressure relief channel within ≤10ms.

5. The active pneumatic adsorption intelligent anti-fall shoe according to claim 1, characterized in that, The pneumatic adsorption actuator (4) includes a micro vacuum pump, a porous sponge suction cup and a solenoid valve; the porous sponge suction cup is made of polyurethane material with a pore size of 10-50μm, a porosity of 30%-50%, and a thickness of 6-8mm, and is embedded in the anti-slip contact outer layer (204) of the shoe sole structure (2).

6. The active pneumatic adsorption intelligent anti-fall shoe according to claim 5, characterized in that, The pneumatic adsorption actuator (4) also includes a noise reduction component (6); the micro vacuum pump is driven by a brushless DC motor with a rated operating voltage of 5V and an operating noise of ≤45dB(A); the noise reduction component includes a through-hole porous metal silencer and an acoustic vibration isolation cavity. The through-hole porous metal silencer is set at the air inlet and outlet of the micro vacuum pump, and the acoustic vibration isolation cavity is used to wrap the micro vacuum pump. The cavity of the acoustic vibration isolation cavity includes, from the inside to the outside, a rubber damping layer, an EVA sound-absorbing layer and a sealed TPU shell.

7. The active pneumatic adsorption intelligent anti-fall shoe according to claim 1, characterized in that, The sole structure (2) includes a cushioning support layer (201), a dielectric insulating layer (202), an electrode conductive layer (203), and an anti-slip contact outer layer (204). The anti-slip contact outer layer (204) is provided with biomimetic fish scale microgrooves and embedded porous sponge suction cups. The whole machine is IP68 waterproof and has a bending life of ≥300,000 times.

8. The active pneumatic adsorption intelligent anti-fall shoe according to claim 1, characterized in that, The standby power consumption of the shoe body (1) is ≤50mW, the battery life of a single charge is ≥72 hours, all electrical modules are potted and insulated, and it is equipped with a Type-C charging interface and an LED power indicator.

9. The active pneumatic adsorption intelligent anti-fall shoe according to claim 1, characterized in that, The wireless communication module of the circuit control system (5) adopts GSM / GPRS dual-mode communication and supports remote alarm via SMS and APP.

10. The active pneumatic adsorption intelligent anti-fall shoe according to claim 1, characterized in that, The processing chip unit of the circuit control system (5) has a false alarm rate of 1.0% and a false alarm rate of 0.5% after algorithm optimization; the Bluetooth 5.0 module set in the circuit control system is used to link with the home gateway; the dielectric insulation layer of the sole structure (2) adopts a nano-coating, and the battery life is extended to 80 hours.

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