Baby feature recognition ankle ring based on pressure sensing

Abstract

The application discloses a baby feature recognition foot ring based on pressure sensing, and particularly relates to the technical field of intelligent monitoring wearable devices for infants, which comprises a distributed pressure sensing module embedded in the inner side of a flexible silica gel outer ring, a plurality of groups of pressure sensors are arranged along the circumference of the ring body, and the pressure sensors are completely embedded in the silica gel interlayer and have no exposed structure. The application adopts silica gel integrated injection molding and a full-sealing structure, cooperates with silica gel and a soft battery, realizes soft and non-invasive wearing and life waterproofing, utilizes a ratchet spring locking structure and anti-skid particles, realizes stepless stable adjustment of the ankle without punching, ensures accurate adhesion and anti-skid of the sensor, accurately distinguishes between sleep, defecation, hunger, thirst and restlessness through multi-dimensional pressure waveform identification and anti-instantaneous shaking misjudgment algorithm, cooperates with Bluetooth synchronization and local buzzer reminding, constructs a high-precision closed-loop monitoring system, and greatly improves the accuracy and application reliability of baby monitoring.

Description

Technical Field

[0001] This invention relates to the field of intelligent monitoring wearable devices for infants and young children, and more specifically, to a pressure-sensing infant feature recognition anklet. Background Technology

[0002] Infant ankle physiological monitoring is of great significance for clinical care and family care of newborns, especially those aged 0-6 months; however, existing wearable physiological monitoring devices for infants still have many shortcomings in terms of structural fit, wearing stability and data recognition accuracy.

[0003] In terms of structural fit and wearing experience, due to the large differences in ankle circumference of newborns aged 0-6 months, which is usually in the range of 8cm-14cm, and the extreme delicacy of infant skin, existing devices mostly use Velcro or elastic bands based on perforation positioning for fixation. This not only fails to achieve true stepless adjustment without perforation, but also the rigid splicing structure or traditional simple buckle can easily rub against the infant's skin, causing discomfort or even pressure marks. At the same time, existing adjustment buckles generally lack effective anti-slip design on the inside, which can easily cause the ankle ring to slide and shift or even fall off when the newborn's limbs move frequently. This causes the embedded pressure sensor to change position and cannot continuously and stably collect real dynamic pressure data at the ankle.

[0004] In terms of data processing and state identification, most pressure-detection-based infant monitoring products on the market currently rely on a single pressure peak threshold or simple action counting for signal processing. This type of processing logic fails to perform multi-dimensional subdivision of the dynamic pressure waveform at specific locations on the ankle, making it impossible to accurately distinguish the subtle pressure differences in newborns under different physiological states such as deep sleep, urination / defecation, hunger / thirst, and abnormal agitation. In addition, this type of single-threshold algorithm is highly susceptible to interference from the infant's unconscious micro-limb twitches, generating a large number of false alarms. This makes it difficult for caregivers to accurately capture the infant's true needs, severely reducing the clinical practical value of the device. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a pressure-sensing infant feature recognition anklet to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a pressure-sensing infant feature recognition anklet, comprising: The flexible silicone outer ring is a closed annular strip structure; A distributed pressure sensing module is embedded inside the flexible silicone outer ring. Multiple pressure sensors are arranged along the circumference of the ring. The pressure sensors are completely embedded inside the silicone interlayer with no exposed structure. They are electrically connected to the main control integrated box through built-in flexible ribbon cables and are used to collect dynamic pressure data generated by the newborn's ankle limb movements. The main control integrated box is sealed and fixed to the middle of the outer side of the flexible silicone outer ring. It integrates a single-chip microcomputer main control chip, a data storage unit and a signal analysis algorithm unit. The main control chip is electrically connected to the distributed pressure sensing module, the wireless Bluetooth transmission module, the buzzer reminder module and the micro rechargeable battery respectively. An adaptive tension adjustment assembly is installed at the mating positions of both ends of the flexible silicone outer ring; A wireless Bluetooth transmission module, integrated inside the main control integrated box, is used to wirelessly connect with external terminal devices and synchronize baby status data in real time. A buzzer reminder module, embedded in the side of the main control integrated box, is used to emit reminder signals; A miniature rechargeable battery, embedded inside the main control integrated box, is used to power the entire device; The main control chip is configured to trigger a corresponding alert based on the dynamic pressure waveform of the ankle collected by the pressure sensor.

[0007] Preferably, the flexible silicone outer ring is made of medical-grade liquid silicone material; The main control integrated box has a flat, ultra-thin rectangular structure; The micro rechargeable battery is an ultra-thin soft-pack lithium battery.

[0008] Preferably, the tension adaptive adjustment component includes a slider and an adjustment base; The slider is fixed to one end of the flexible silicone outer ring. The lower surface of the slider is provided with a toothed groove, and the upper surface of the slider is arranged with anti-slip silicone particles. The adjustment base is embedded at the other end of the flexible silicone outer ring, and the adjustment base has an adjustment groove inside, with the slide bar slidably inserted into the adjustment groove. The lower surface of the adjustment base is provided with a through groove, and a pawl is hinged in the through groove. The end of the pawl forms a one-way locking engagement in the tooth groove. The adjustment base is provided with a fixing box, and a spring is elastically connected between the fixing box and the pawl. The spring is used to provide a preload force to force the pawl to engage in the tooth groove. An unlocking button is slidably inserted through the bottom of the adjusting base. The unlocking button is rigidly connected to the tail of the pawl via a connecting rod. Pressing the unlocking button can overcome the spring force through the connecting rod, drive the pawl to disengage from the tooth groove, and release the restriction on the slide bar.

[0009] Preferably, the pressure sensor is a high-precision thin-film pressure sensor, and each sensor is electrically connected to the main control chip in parallel via the built-in flexible cable.

[0010] Preferably, the signal analysis algorithm unit has a built-in pressure algorithm threshold, and the microcontroller main control chip executes the following state recognition logic: When the pressure value collected by the pressure sensor fluctuates below a preset resting threshold, it is determined to be a deep sleep state. When the collected pressure fluctuation frequency is within the preset regular fluctuation range, it is determined to be a state of urination or defecation, and an alert command is triggered; When the collected pressure fluctuation frequency is higher than the preset disturbance frequency threshold and has no fixed period, it is determined to be in a thirsty state, and a thirst reminder command is issued. When the collected pressure data exceeds the above-mentioned standard waveforms, it is determined to be an abnormally agitated state.

[0011] Preferably, the microcontroller main control chip continuously collects multiple sets of data with the same waveform before triggering the corresponding status reminder, in order to avoid misjudgment caused by momentary limb tremors.

[0012] Preferably, the pressure sensor is a flexible piezoelectric pressure sensor that generates an electrical signal to feedback pressure changes through deformation.

[0013] Preferably, the wireless Bluetooth transmission module is a low-power Bluetooth module, which can wirelessly connect to the parent's mobile terminal or the ward monitoring host to synchronize the baby's status data and abnormal alerts in real time.

[0014] Preferably, the buzzer reminder module uses a low-frequency, gentle buzzer sound output.

[0015] Preferably, the main control integrated box, the distributed pressure sensing module, the wireless Bluetooth transmission module, the buzzer reminder module, and the micro rechargeable battery are integrally molded with the flexible silicone outer ring using silicone injection molding.

[0016] The technical effects and advantages of this invention are as follows: Its built-in signal analysis algorithm unit does not simply rely on a single pressure threshold, but constructs a multi-dimensional physiological state model based on the frequency and amplitude of pressure fluctuations. By identifying differentiated frequency and time domain features of deep sleep, urination / defecation, thirst, and abnormal agitation, it achieves accurate classification and differentiation of different physiological needs. The microcontroller main control chip is equipped with an instantaneous jitter anti-misjudgment mechanism that continuously collects multiple sets of identical waveform data before triggering an alert. This effectively filters out invalid noise interference caused by unconscious minor limb twitches in newborns, giving the device extremely high anti-interference capability and judgment accuracy. Combined with remote synchronization via a low-power Bluetooth module and local sound generation of a low-frequency, gentle buzzer alert, it forms a highly collaborative closed-loop monitoring system that fills the industry gap in current infant monitoring devices that lack physiological state recognition based on ankle dynamic pressure features, and has great clinical application value. The adaptive tension adjustment component overcomes the technical bottlenecks of traditional buckles, which are prone to loosening and accidental activation. A slider is inserted into the adjustment groove of the adjustment base, with a toothed groove on its lower surface. This, combined with a spring connected elastically inside the fixing box, pushes the pawl end, which is hinged within the groove, to achieve one-way locking. This enables precise stepless adjustment and strong self-locking for the ankle circumference of newborns, effectively preventing the ankle band from loosening and falling off due to frequent twisting of the baby's limbs. Simultaneously, the unlocking button, which uses a connecting rod to rigidly drive the pawl out of the toothed groove, completely offsets the direction of force required for unlocking from the direction of pulling during daily wear, providing excellent anti-accidental activation performance. Combined with the anti-slip silicone particles arrayed on the upper surface of the slider, the ankle band's absolute stability during dynamic monitoring is guaranteed from both a mechanical structure and surface friction perspective. This significantly solves the technical problems of existing infant monitoring ankle bands being prone to slippage and misalignment, leading to inaccurate contact positions of the pressure sensor. By employing a one-piece silicone injection molding process, all electronic components, including the distributed pressure sensing module, main control integration box, wireless Bluetooth transmission module, buzzer reminder module, and micro rechargeable battery, are seamlessly integrated with the flexible silicone outer ring, creating a completely sealed, integrated foot ring with no exposed structure. This effectively ensures waterproof performance for everyday use while completely eliminating the risk of friction or cuts from hard objects that could occur to the delicate skin of newborns due to traditional splicing structures. The use of medical-grade liquid silicone in the flexible silicone outer ring, the flat, ultra-thin rectangular structure of the main control integration box, and the ultra-thin soft-pack design of the micro rechargeable battery achieves an optimal balance in overall thickness, weight, and flexibility. It can freely bend 360 degrees to conform to the shape of a newborn's ankle without any blind spots, solving the problems of poor compatibility and strong foreign body sensation associated with existing infant wearable sensors. This significantly improves the long-term wearing comfort and biosafety of the device in neonatal ward environments. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a front cross-sectional view of the present invention.

[0019] Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A in the middle.

[0020] Figure 4 This is a schematic diagram of the system module connection structure of the present invention.

[0021] The attached diagram is labeled as follows: 1. Flexible silicone outer ring; 2. Main control integrated box; 3. Pressure sensor; 4. Slide bar; 5. Wireless Bluetooth transmission module; 6. Buzzer reminder module; 7. Micro rechargeable battery; 8. Built-in flexible ribbon cable; 9. Gear groove; 10. Adjustment slide groove; 11. Through groove; 12. Pawl; 13. Fixing box; 14. Spring; 15. Unlock button; 16. Connecting rod; 17. Anti-slip silicone particles; 18. Adjustment base. Detailed Implementation

[0022] 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 some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] As attached Figure 1-4 The pressure-sensitive infant feature recognition anklet shown includes: The flexible silicone outer ring 1 is a closed annular strip structure with a width of 8mm and an overall thickness of ≤2mm. The distributed pressure sensing module is embedded inside the flexible silicone outer ring 1. Multiple pressure sensors 3 are arranged along the circumference of the ring. The pressure sensors 3 are completely embedded inside the silicone interlayer with no exposed structure. They are electrically connected to the main control integrated box 2 through the built-in flexible ribbon cable 8 to collect dynamic pressure data generated by the newborn's ankle limb movements. The main control integrated box 2 is sealed and fixed to the middle of the outer side of the flexible silicone outer ring 1. The internal components include a microcontroller main control chip, a data storage unit, and a signal analysis algorithm unit. The main control chip is electrically connected to the distributed pressure sensing module, the wireless Bluetooth transmission module 5, the buzzer reminder module 6, and the micro rechargeable battery 7. The tension self-adjusting component is installed at the mating positions of both ends of the flexible silicone outer ring 1; The wireless Bluetooth transmission module 5 is integrated inside the main control integrated box 2 and is used to wirelessly connect with external terminal devices and synchronize the baby's status data in real time. The buzzer reminder module 6 is embedded in the side of the main control integration box 2 and is used to emit reminder signals; The micro rechargeable battery 7 is embedded inside the main control integrated box 2 and is used to power the entire device; The main control chip is configured to match and identify at least one of the following states of an infant: sleeping, urinating / defecation, thirst, and abnormal restlessness, based on the dynamic pressure waveform of the ankle collected by the pressure sensor 3, and trigger the corresponding reminder.

[0024] Preferably, the flexible silicone outer ring 1 is made of medical-grade liquid silicone material, which is soft and deformable and can bend freely with the movement of the newborn's ankle and limbs; The main control integration box 2 has a flat, ultra-thin rectangular structure; The micro rechargeable battery 7 is an ultra-thin soft-pack lithium battery.

[0025] Preferably, the self-adjusting tension adjustment component adopts a press-type stepless adjustment buckle structure, which is suitable for ankle circumference of 8cm-14cm. The self-adjusting tension adjustment component includes a slider 4 and an adjustment base 18. The slider 4 is fixed to one end of the flexible silicone outer ring 1. The lower surface of the slider 4 is provided with a toothed groove 9, and the upper surface of the slider 4 is arranged with anti-slip silicone particles 17. The adjustment base 18 is embedded at the other end of the flexible silicone outer ring 1. An adjustment groove 10 is provided inside the adjustment base, and the slide bar 4 is slidably inserted into the adjustment groove 10. The lower surface of the adjusting base 18 is provided with a through groove 11, and a pawl 12 is hinged in the through groove 11. The end of the pawl 12 forms a one-way locking engagement in the tooth groove 9. The adjusting base is provided with a fixing box 13. A spring 14 is elastically connected between the fixing box 13 and the pawl 12. The spring 14 is used to provide a preload force to force the pawl 12 to engage in the tooth groove 9. An unlocking button 15 is slidably inserted at the bottom of the adjusting base. The unlocking button 15 is rigidly connected to the tail of the pawl 12 via a connecting rod 16. Pressing the unlocking button 15 can overcome the elastic force of the spring 14 through the connecting rod 16, drive the pawl 12 to disengage from the tooth groove 9, and release the limit on the slide bar 4.

[0026] Preferably, the pressure sensor 3 is a high-precision thin-film pressure sensor, which is arranged along the circumference of the ring body. The spacing between adjacent sensors is 15mm. Each sensor is electrically connected to the microcontroller main control chip in the main control integrated box 2 in parallel through the built-in flexible ribbon cable 8.

[0027] Preferably, the signal analysis algorithm unit has a built-in preset pressure algorithm threshold, and the microcontroller main control chip executes the following state recognition logic: When the pressure value collected by pressure sensor 3 is stable and without fluctuation, and the fluctuation range is ≤5Pa, it is determined to be in a deep sleep state, and the device enters a low-power sleep mode. When periodic and regular pressure fluctuations are detected, the frequency of pressure fluctuations is stable at 3-5 times / minute, and the pressure peak value is stable, it is determined to be a state of urination or defecation, and an alert command is immediately triggered. When chaotic pressure fluctuations are detected, the pressure fluctuation frequency is ≥12 times / minute, and the pressure peak value fluctuates without a fixed period, it is determined to be a thirsty state, and a thirsty reminder command is issued. When the collected pressure data exceeds the above three standard waveforms, it is uniformly judged as an abnormal agitation state, and an abnormality reminder is pushed to the parent terminal simultaneously.

[0028] Preferably, the pressure sensor 3 acquires pressure data at a frequency of once every 200ms, and the microcontroller main control chip continuously acquires 5 sets of the same waveform data before triggering the corresponding status reminder, so as to avoid false reminders caused by momentary limb tremors.

[0029] Preferably, the pressure sensor 3 is a flexible piezoelectric pressure sensor that generates an electrical signal to feedback pressure changes through deformation, and the flexible silicone outer ring 1 supports high-temperature and high-pressure sterilization at 121°C.

[0030] Preferably, the wireless Bluetooth transmission module 5 is a low-power Bluetooth module, which can wirelessly connect to the parent's mobile terminal or the ward monitoring host to synchronize the baby's status data and abnormal alerts in real time.

[0031] Preferably, the buzzer reminder module 6 uses a low-frequency, gentle buzzer sound output.

[0032] Preferably, the charging interface of the micro rechargeable battery 7 is a magnetic wireless charging contact. The main control integrated box 2, the distributed pressure sensing module, the wireless Bluetooth transmission module 5, the buzzer reminder module 6, and the micro rechargeable battery 7 are integrally injection molded with flexible silicone outer ring 1, without any external protruding components, achieving a fully sealed structure and supporting water resistance for daily use.

[0033] The microcontroller chip is also configured to: control the device to enter a low-power sleep mode when a deep sleep state is detected, with an average operating power consumption of ≤0.8mW and a battery life of ≥120 hours on a single charge; and add a new body position rotation pressure recognition logic to adapt to the body position care needs of neonatal wards, and synchronize the status data of multiple bed infants to the hospital's neonatal monitoring screen for centralized monitoring.

[0034] The working principle of this invention is as follows: First, the size needs to be adjusted according to the actual circumference of the newborn's ankle. The operator presses the unlocking button 15, which is slidably inserted at the bottom of the adjustment base 18. The unlocking button 15 drives the pawl 12, which is hinged in the through groove 11, to swing through the rigidly connected connecting rod 16. This overcomes the preload provided by the spring 14 in the fixing box 13, causing the end of the pawl 12 to disengage from the toothed groove 9 on the lower surface of the slide bar 4, releasing the one-way locking limit on the slide bar 4. At this time, the slide bar 4 can slide freely in the adjustment groove 10 inside the adjustment base 18 to steplessly adjust the closed diameter of the flexible silicone outer ring 1. After the fit is completed, the unlocking button 15 is released, and the spring 14 pushes the pawl 12 to automatically reset through elastic force. The ring re-engages with the toothed groove 9 to achieve a locking fit. Simultaneously, the anti-slip silicone particles 17 arrayed on the upper surface of the slide bar 4 effectively prevent the silicone outer ring from sliding on the ankle. After wearing, multiple pressure sensors 3, completely embedded within the silicone interlayer inside the flexible silicone outer ring 1 with no exposed structure, begin to collect dynamic pressure data generated by the newborn's ankle movements in real time. Each sensor transmits the signal via a built-in flexible cable 8 to the main control integrated box 2, which is sealed and fixed in the middle of the outer side of the flexible silicone outer ring 1. The main control integrated box 2 integrates a microcontroller main control chip, a data storage unit, and a signal analysis algorithm unit to analyze the waveform. Its signal analysis algorithm unit has a built-in pressure algorithm threshold. The execution state recognition logic is as follows: when the collected pressure value fluctuation amplitude is lower than the preset resting threshold, it is determined to be in a deep sleep state; when the collected pressure fluctuation frequency is within the preset regular fluctuation range, it is determined to be in a urination / defecation state and triggers an alert command; when the collected pressure fluctuation frequency is higher than the preset agitation frequency threshold and has no fixed cycle, it is determined to be in a thirst state and a thirst alert command is issued; when the collected pressure data exceeds the above three standard waveforms, it is uniformly determined to be in an abnormal agitation state. To avoid misjudgment caused by momentary limb tremors, the microcontroller main control chip will continuously collect multiple sets of data with the same waveform before triggering the corresponding state alert; after identifying the specific infant state, the main control chip integrates the processed state data... The wireless Bluetooth transmission module 5 inside the main control integration box 2 establishes a wireless connection with the parent's mobile terminal or the ward monitoring host and synchronizes in real time. At the same time, based on the recognition result, the buzzer reminder module 6 embedded in the side of the main control integration box 2 is triggered to emit a low-frequency and gentle buzzer sound for local reminder. The entire operation of the device is continuously powered by the micro rechargeable battery 7 embedded in the main control integration box 2. Since the main control integration box 2, the distributed pressure sensing module, the wireless Bluetooth transmission module 5, the buzzer reminder module 6, and the micro rechargeable battery 7 are integrally injection molded with flexible silicone outer ring 1, the product has a fully sealed structure, thus ensuring protection and service life in the daily wear scenario of newborns.

[0035] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other. In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pressure-sensing infant feature recognition anklet, characterized in that, include: The flexible silicone outer ring (1) is a closed annular strip structure; A distributed pressure sensing module is embedded inside the flexible silicone outer ring (1), and multiple pressure sensors (3) are arranged along the circumference of the ring. The pressure sensors (3) are completely embedded inside the silicone interlayer with no exposed structure, and are electrically connected to the main control integrated box (2) through the built-in flexible ribbon cable (8) to collect dynamic pressure data generated by the newborn's ankle limb movements. The main control integrated box (2) is sealed and fixed in the middle of the outer side of the flexible silicone outer ring (1). It integrates a single-chip microcomputer main control chip, a data storage unit and a signal analysis algorithm unit. The main control chip is electrically connected to the distributed pressure sensing module, the wireless Bluetooth transmission module (5), the buzzer reminder module (6) and the micro rechargeable battery (7). An adaptive tension adjustment assembly is installed at the mating positions of both ends of the flexible silicone outer ring (1); The wireless Bluetooth transmission module (5) is integrated inside the main control integrated box (2) and is used to wirelessly connect with external terminal devices and synchronize the baby's status data in real time. A buzzer reminder module (6) is embedded in the side of the main control integrated box (2) and is used to emit a reminder signal; A micro rechargeable battery (7) is embedded inside the main control integrated box (2) and is used to power the entire device; The main control chip is configured to trigger a corresponding reminder based on the ankle dynamic pressure waveform collected by the pressure sensor (3).

2. The infant feature recognition anklet based on pressure sensing according to claim 1, characterized in that: The flexible silicone outer ring (1) is made of medical-grade liquid silicone material; The main control integrated box (2) has a flat, ultra-thin rectangular structure; The micro rechargeable battery (7) is an ultra-thin soft-pack lithium battery.

3. The infant feature recognition anklet based on pressure sensing according to claim 1, characterized in that: The tension adaptive adjustment component includes a slide bar (4) and an adjustment base (18). The slider (4) is fixed to one end of the flexible silicone outer ring (1), and a toothed groove (9) is provided on the lower surface of the slider (4), and anti-slip silicone particles (17) are arranged in an array on the upper surface of the slider (4). The adjustment base (18) is embedded at the other end of the flexible silicone outer ring (1), and the adjustment base has an adjustment groove (10) inside, and the slide bar (4) is slidably inserted into the adjustment groove (10); The lower surface of the adjusting base (18) is provided with a through groove (11), and a pawl (12) is hinged in the through groove (11). The end of the pawl (12) forms a one-way locking fit in the tooth groove (9). The adjusting base is provided with a fixing box (13), and a spring (14) is elastically connected between the fixing box (13) and the pawl (12). The spring (14) is used to provide a preload force to force the pawl (12) to engage in the tooth groove (9). An unlocking button (15) is slidably inserted through the bottom of the adjustment base. The unlocking button (15) is rigidly connected to the tail of the pawl (12) through a connecting rod (16). Pressing the unlocking button (15) can overcome the elastic force of the spring (14) through the connecting rod (16), drive the pawl (12) to disengage from the tooth groove (9), and release the restriction on the slider (4).

4. The infant feature recognition anklet based on pressure sensing according to claim 1, characterized in that: The pressure sensor (3) is a high-precision thin-film pressure sensor, and each sensor is electrically connected to the main control chip in parallel through the built-in flexible cable (8).

5. The infant feature recognition anklet based on pressure sensing according to claim 1, characterized in that: The signal analysis algorithm unit has a built-in pressure algorithm threshold, and the microcontroller main control chip executes the following state recognition logic: When the pressure value collected by the pressure sensor (3) fluctuates below the preset resting threshold, it is determined to be in a deep sleep state; When the collected pressure fluctuation frequency is within the preset regular fluctuation range, it is determined to be a state of urination or defecation, and an alert command is triggered; When the collected pressure fluctuation frequency is higher than the preset disturbance frequency threshold and has no fixed period, it is determined to be in a thirsty state, and a thirst reminder command is issued. When the collected pressure data exceeds the above-mentioned standard waveforms, it is determined to be an abnormally agitated state.

6. The infant feature recognition anklet based on pressure sensing according to claim 1, characterized in that: The microcontroller main control chip continuously collects multiple sets of data with the same waveform before triggering the corresponding status reminder, in order to avoid misjudgment caused by momentary limb tremors.

7. The infant feature recognition anklet based on pressure sensing according to claim 1, characterized in that: The pressure sensor (3) is a flexible piezoelectric pressure sensor that generates an electrical signal to feedback pressure changes through deformation.

8. A pressure-sensing infant feature recognition anklet according to claim 1, characterized in that: The wireless Bluetooth transmission module (5) is a low-power Bluetooth module that can wirelessly connect to the parent's mobile terminal or the ward monitoring host to synchronize the baby's status data and abnormal reminders in real time.

9. A pressure-sensing infant feature recognition anklet according to claim 1, characterized in that: The buzzer reminder module (6) uses a low-frequency, gentle buzzer sound output.

10. A pressure-sensing infant feature recognition anklet according to claim 1, characterized in that: The main control integrated box (2), the distributed pressure sensing module, the wireless Bluetooth transmission module (5), the buzzer reminder module (6), and the micro rechargeable battery (7) are integrally molded with silicone as a whole with the flexible silicone outer ring (1).

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