Smart drowning protection bracelet

Abstract

An intelligent drowning protection bracelet, consisting of a housing (1), characterized by: in the housing (1) a separate mechanical outer chamber (11) and a sealed water chamber (12) are provided; in the mechanical outer chamber (11) a rescue actuation unit (13) is arranged; in the sealed water chamber (12) a control circuit (14) and a sensor (15) are provided; the sensor (15) serves to detect environmental parameters, the control circuit (14) serves to determine a diving protection status based on the environmental parameters and to control the rescue actuation unit (13).

Description

TECHNICAL AREA

[0001] The present utility model solution concerns the field of intelligent wearable devices and relates in particular to an intelligent wristband solution for monitoring and protection against drowning. TECHNICAL BACKGROUND

[0002] Drowning, particularly among young people, has become a serious public safety problem. While the development of the Internet of Things and smart wearables has brought drowning prevention devices with simple alarm indicators to the market, their functionality is often limited – they can either only trigger local alerts or be manually activated. A systematic solution that combines intelligent monitoring, autonomous rescue, precise location tracking, and remote coordination is lacking. Consequently, they are unlikely to play a decisive role in real, complex drowning situations.

[0003] Existing technologies for preventing drowning accidents have the following significant shortcomings: They lack a comprehensive system that integrates highly precise, autonomous detection, automatic and rapid rescue measures, real-time location tracking, and remote manual intervention. Furthermore, the devices' waterproof reliability is insufficient, and no effective visual distress signal is transmitted after system activation, thus limiting the overall efficiency and success rate of rescue efforts. CONTENT OF THE PRESENT APPLICATION

[0004] To overcome the disadvantages of existing technologies, the present utility model solution proposes an intelligent diving protection wristband that solves the problems mentioned in the preceding technology.

[0005] To achieve the aforementioned objectives, the present utility model solution implements the following technical solution: An intelligent collar for drowning protection, consisting of a housing containing a separate mechanical outer chamber and a sealed water chamber. The mechanical outer chamber houses a rescue propulsion unit, while the sealed water chamber contains a control circuit and sensors. The sensors detect environmental parameters, and the control circuit uses these parameters to determine the drowning status and activates the rescue propulsion unit accordingly.

[0006] Furthermore, the sensor is a pressure sensor; the control circuit is configured to determine whether the swimming fall threshold has been reached based on the underwater dip detected in real time by this sensor and the rate of its change.

[0007] Furthermore, the rescue propulsion unit includes a gas cylinder for storing high-pressure gas, a mechanical valve device controlled by the control circuit to open or close the valve, and air chambers connected to the valve device's outlet. When the control circuit detects a drowning situation, the valve opens, allowing high-pressure gas from the gas cylinder to fill the air chambers.

[0008] In addition, a sealing cover plate is attached to the top of the sealing chamber body; the air chamber is located in the mechanical outer container and lies above the sealing cover plate; one end of the gas cylinder is connected to a mechanical valve, the other end passes through the side wall of the bracelet case and extends to the outside.

[0009] Furthermore, the mechanical valve device includes a valve actuator and a drive gear.

[0010] Furthermore, the control circuit comprises a main control board, a motor drive module, and a power management module. The main control board is connected to the sensor and to the motor drive module, which in turn is connected to the rescue actuator. The power management module supplies the control circuit with energy.

[0011] Furthermore, an ESP32 chip and a wireless communication module are integrated on the main control board. A GPS module, electrically connected to the main control board, is also located in the tightly sealed water tank.

[0012] In addition, several magnets are built into the top of the bracelet case.

[0013] In addition, a battery is integrated into the tightly sealed water shell; a wireless charging induction coil is installed at the bottom of this shell, which is electrically connected to the power management module and serves to charge the battery.

[0014] In addition, a light signal is attached to the inside of the tightly sealed water reservoir on the side of the motor drive module; a light-guiding sealing element with appropriate light orientation is attached to the surface of the bracelet case.

[0015] Symmetrical connecting lugs are attached to the lower sides of the case of the aforementioned bracelet, which serve to mount the bracelet strap.

[0016] Compared to existing technologies, the present utility model solution offers an intelligent diving protection wristband with the following advantages: This utility model uses a pressure sensor to monitor underwater depth and its rate of change in real time, enabling precise detection of the drowning status. This automatically controls the mechanical valve opening, allowing the high-pressure gas in the gas cylinder to be rapidly inflated into the inflatable balloon. This facilitates the wearer's rapid ascent and initiates an automatic rescue. A GPS module integrated into the tightly sealed water-filled envelope provides precise, real-time positional information, significantly supporting search and rescue operations. The operator can remotely send commands via a smartphone app using a wireless communication module to actively trigger inflation and prevent potential hazards. The battery is recharged via a wireless charging induction coil, eliminating the need for physical charging ports and significantly enhancing the waterproof reliability of the envelope.Once the system is triggered, the control circuit switches the signal light to a flashing red mode, with the light shining clearly outwards through the light-guiding seal. The likelihood of rescue workers finding the person in the water has increased significantly. BRIEF DESCRIPTION OF THE DRAWINGS Fig. Figure 1 shows the structure of the housing of the bracelet device according to the present utility model solution. Fig. Figure 2 shows the side view of the housing structure of the wristband device according to the present utility model solution. Fig. Figure 3 shows the lower structure of the housing of the bracelet device according to the present utility model solution. Fig. Figure 4 shows the structure of the sealing cover plate according to the present utility model solution. Fig. Figure 5 shows the schematic representation of the main control board according to the present utility model solution. Fig. Figure 6 shows the circuit structure of the control circuit according to the present utility model solution.

[0017] In the picture: 1. Bracelet housing; 11. Mechanical outer cabin; 12. Waterproof cabin housing; 121. Sealing cover plate; 13. Rescue actuator; 131. Gas cylinder; 132. Mechanical valve; 133. Air baguette; 134. Valve drive motor; 135. Drive gear; 14. Control circuit; 141. Main control board; 142. Motor drive module; 143. Power management module; 144. ESP32 chip; 145. Wireless communication module; 146. GPS module; 147. Battery; 148. Wireless charging induction cable; 149. Signal light; 15. Sensor; 16. Magnet; 17. Light guide seal; 18. Connecting ear. DETAILED DESCRIPTION

[0018] The technical solution according to an embodiment of the present utility models is clearly and completely described with reference to the accompanying drawings. Example

[0019] How Fig. As shown, one embodiment of the present utility models comprises an intelligent diving protection wristband system consisting of a wristband housing 1. Within the housing 1 are a separate mechanical outer chamber 11 and a sealed water chamber 12. A rescue actuator unit 13 is integrated into the mechanical outer chamber 11. A control circuit 14 and a sensor 15 are located in the sealed water chamber 12. The sensor 15 detects environmental parameters; the control circuit 14 evaluates these parameters to determine the need for diving protection and then controls the rescue actuator unit 13.

[0020] The mechanical outer chamber 11 houses the rescue actuator 13, which includes mechanical movements and high-pressure gases, while the tightly sealed water chamber 12 protects moisture-sensitive electronic systems, including the control circuit 14 and the sensors 15. The control circuit 14 continuously receives environmental parameters from the sensors 15, analyzes them using built-in algorithms, autonomously detects a drowning risk, and activates the rescue actuator 13 as soon as a risk is confirmed – thus creating a complete loop of monitoring, decision-making, and execution.

[0021] The physical isolation fundamentally prevents damage or malfunctions of precise circuits caused by water vapor and vibrations that could occur during rescue operations such as inflating the Air Capsule 133. This significantly increases the system's long-term reliability and its watertight safety. The closed, automatic control system enables unmanned intervention—from risk detection to automatic rescue—and considerably reduces response time. This provides the drowned person with a crucial, immediate upward force, overcoming the fatal disadvantage of conventional manual rescue operations with their long delays.

[0022] How Fig. As shown, in some embodiments the sensor 15 is a pressure sensor 15; the control circuit 14 is configured to determine, on the basis of the underwater dip detected in real time by the pressure sensor 15 and the rate of change of depth, whether the swimming fall threshold has been reached.

[0023] Due to the property that pressure in a body of water increases with increasing depth, the absolute underwater pressure of the support is measured in real time and converted into depth information. The control circuit 14 not only monitors the static depth but also calculates the rate of change of depth over time (i.e., the depth change rate) using high-frequency sampling. The system compares the real-time depth with a preset safety level and simultaneously analyzes whether the depth change curve shows a rapid descent or other typical characteristics of a near-drowning situation.

[0024] Monitoring is carried out via pressure sensor 15, which reacts directly, reliably, and quickly. By combining two criteria—the underwater depth and the rate of depth change—it is possible to differentiate more precisely between active diving and unintentional drowning compared to simple depth classification. This significantly reduces false activation of the system, thereby increasing safety and user acceptance.

[0025] How Fig. As shown, in some embodiments, the rescue actuator 13 comprises a gas container 131 for storing high-pressure gas, a mechanical valve device 132 controlled by the control circuit 14 to open or close the gas container, and air chambers 133 connected to the outlet of the valve device 132. When the control circuit 14 detects a drowning condition, the mechanical valve device 132 is opened, allowing the high-pressure gas from the gas container 131 to fill the air chambers 133.

[0026] The emergency execution unit 13 consists of three components connected in series: a gas cylinder container 131, which stores high-pressure gas (usually carbon dioxide); a mechanical valve 132, which is controlled by the control circuit 14 and is opened or closed (execution switch); and air chambers 133 (life-saving device) connected to the valve 132. When the control circuit 14 detects a drowning situation, it sends an electrical opening signal to the valve 132. As soon as the valve is open, the high-pressure gas from the gas cylinder container 131 flows rapidly into the air chambers 133 due to the pressure difference, causing them to inflate within a very short time.

[0027] The high-pressure gas filling mechanism ensures rapid inflation and generates a strong, immediate buoyancy force for the wearer, enabling a swift ascent. The entire system is self-supporting, independent of external support, and operates reliably – thus representing the crucial component for self-rescue procedures in drowning situations.

[0028] How Fig. As shown, in some embodiments a sealing cover plate 121 is attached to the top of the tightly sealed water reservoir 12. The air chamber 133 is located in the mechanical outer container 11 and lies above the sealing cover plate 121. One end of the gas cylinder 131 is connected to the mechanical valve 132, while the other end passes through the side wall of the bracelet case 1 and extends to the outside.

[0029] The sealed cabin 12 is equipped at the top with a sealing cover plate 121, which serves for the maintenance of the electronic devices inside. The balloon 133 is housed in the mechanical outer chamber 11 and is positioned precisely above the sealing cover plate 121. When inflated, the inflated balloon 133 pushes upwards and releases the magnetic wrist sleeve 1 above it, causing it to inflate rapidly. The gas cylinder 131 is positioned so that one end is connected to the mechanical valve 132 and the other end passes through the side wall of the wrist sleeve 1 and extends to the outside, facilitating replacement or inspection.

[0030] The air chamber 133 is positioned above the sealing cover plate 121, thus providing a clear and unobstructed path for inflation. This allows the chamber to burst quickly and smoothly without becoming trapped in the internal structure. The exposed design of the gas cylinder 131 facilitates subsequent maintenance and replacement, thereby improving maintainability and extending the product's service life.

[0031] How Fig. As shown, in some embodiments the mechanical valve device 132 comprises a valve drive motor 134 and a drive gear 135.

[0032] The control circuit 14 controls the valve drive motor 134 via a drive current, causing it to rotate. The torque at the motor output shaft is converted into a mechanical force via a gear or transmission arrangement with a gear ball 135, which sets the control valve core – for example, a needle or a rotating valve plate – into linear or rotary motion, thus enabling the valve to open or close.

[0033] By employing a drive solution consisting of a motor and gearbox, the gearbox can be used to reduce speed and increase torque, so that even a small motor generates sufficient power to reliably open the valves of the high-pressure gas tank 131. In this way, high energy output is controlled with a low-power electronic control element. The design is compact, the control precise, and the response speed high.

[0034] How Fig. As shown, in some embodiments, the control circuit 14 comprises a main control board 141, a motor drive module 142, and a power management module 143. The input voltage of the main control board 141 is applied to the sensor 15, and the output voltage is applied to the motor drive module 142. The motor drive module 142 is connected to the rescue actuator 13. The power management module 143 supplies power to the control circuit 14.

[0035] The main control board 141 processes all input signals from the sensors 15 and executes the drowning detection algorithm. Its output interface is connected to the motor drive module 142, which converts the weak control signals from the main control board 141 into strong power signals capable of driving the valve drive motor 134. The power management module 143 utilizes the battery 147 and provides all the aforementioned modules with a stable and suitable voltage and current level.

[0036] The motor drive module 142 serves as a special drive interface and effectively isolates interference from the power circuit to the digital circuits of the central main control board 141. The power management module 143 ensures a stable power supply to all components and optimizes the overall energy consumption of the device.

[0037] How Fig. As shown, in some embodiments the ESP32 chip 144 and the wireless communication module 145 are integrated on the main control board 141. The GPS module 146, which is electrically connected to the main control board 141, is also provided in the closed water tank 12.

[0038] The ESP32 chip 144 is a highly integrated system-on-chip (SoC) for wireless systems, integrating a dual-core processor, Wi-Fi and Bluetooth capabilities, extensive peripheral interfaces, and an energy-efficient management unit into a single chip. As a core component, it not only meets the computing power requirements of the drowning detection algorithm but also provides the hardware foundation for remote control of the wristband via the smartphone app and for data transmission—for example, during future over-the-air (OTA) updates—through its integrated wireless functions (such as Wi-Fi and Bluetooth). This enables a more intelligent ecosystem and simplifies the design of peripheral circuits. The GPS module 146 provides precise location information. In drowning accidents in open water, the current can cause the victim to move in a displaced position.Real-time and precise GPS coordinates significantly shorten the search time for rescue workers, thus saving valuable time for water protection measures - they are crucial for the functionality of the tracking and emergency call functions.

[0039] The wireless communication module 145 is a 4G or 5G module that establishes a fast, wide-area data connection between the wristband and the app on the caregiver's mobile phone. Through this connection, the caregiver can send an encrypted, verified remote start instruction via the app. As soon as the microcontroller receives and recognizes the instruction, it immediately opens the mechanical valve 132 to enable remote activation of the air puff. This leverages the advantages of 4G / 5G networks—comprehensive coverage, high reliability, and low latency—to allow for user intervention in emergencies, in addition to automatic detection. This significantly enhances the system's redundant safety in complex emergencies.

[0040] How Fig. As shown, in some embodiments several magnets 16 are built into the top of the bracelet case 1, which serve to magnetically attach a removable outer decorative or protective case.

[0041] A removable outer decorative or protective cover is attached using the attractive force of magnet 16. This cover is independent of the main structure of the bracelet and is positioned so that its coverage area does not physically impede the expansion path or the expansion space of the balloon 133.

[0042] The magnetic housing connection allows for easy, customized setup or additional protective functions, thus enhancing both the aesthetic appearance and the user experience. The magnetic connection can be conveniently removed and reattached at any time. Crucially, the housing functions as an independent, non-fixed component: when the Airbag 133 is deployed and needs to inflate rapidly, the resulting force can easily push or retract the housing outwards. This ensures that the Airbag 133 inflation process remains unobstructed and guarantees the absolute reliability of the core rescue function. This solution cleverly separates individual requirements from vital safety functions, combining aesthetics with safety – without compromise.

[0043] How Fig. As shown, in some embodiments the battery 147 is housed in the tightly sealed water tank 12. A wireless charging induction coil 148 is installed at the bottom of the tank, which is electrically connected to the power management module 143 and serves to charge the battery 147.

[0044] A battery 147 is installed as an energy storage device in the closed water reservoir 12. A wireless charging induction coil 148 is integrated into the bottom of the reservoir and is electrically connected to the power management module 143 located inside the reservoir. When a wireless charging station emits a changing electromagnetic field, the coil 148 induces a current flow at the base of the wristband. This current is regulated and stabilized by the power management module 143 to charge the battery 147.

[0045] By using wireless charging technology, the physical charging output on the bracelet's housing 1 is completely eliminated, thus removing a significant risk of water ingress from the root and considerably improving the water resistance of the entire waterproof body 12. At the same time, the contactless charging technology increases user-friendliness and safety.

[0046] How Fig. As shown, in some embodiments an additional light signal 149 is provided, which is attached to the inside of the tightly sealed water reservoir 12 on the side opposite the motor drive module 142. A light-conducting sealing element 17, which corresponds to the light signal 149, is attached to the surface of the wristband housing 1.

[0047] On both sides of the lower edge area of ​​the bracelet case 1, symmetrical connecting lugs 18 are attached, which serve to mount the bracelet.

[0048] The signal light 149, for example an LED light panel, is attached directly to the inner wall of the sealed watertight compartment 12. On the surface of the wristband housing 1, at the corresponding location, there is a light-guiding seal 17 made of highly transparent material, which directs the light from the internal signal light 149 to the outside and makes it visible. This design ensures the integrity of the watertight compartment 12 and simultaneously integrates an active visual emergency warning function.

[0049] The signal light 149 displays various colors during normal operation or in standby mode, for example, green, to indicate its current status. As soon as the system detects a drowning and activates the rescue system, the control circuit 14 switches the signal light to a continuously flashing red mode. The flashing, bright red light shines clearly through the light-guiding seal 17 and is particularly conspicuous in complex aquatic environments, effectively attracting the attention of bystanders and rescue personnel and significantly increasing the likelihood of being detected and located in time during emergencies.This solution ensures the integrity of the watertight vessel 12 while simultaneously integrating an active visual aid signal function. It prevents the risk of a seal rupture due to holes in the wristband housing 1 that could pass through conductors and represents a prime example of the combination of functionality and waterproof reliability. The connection of the ear 18 provides a standardized and reliable attachment point for the wristband and ensures a stable wearing position.

[0050] Finally, it should be noted that the examples mentioned above merely represent preferred embodiments of the present utility model solution and do not limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the field may further develop the technical solutions described therein or replace individual technical features with equivalent alternatives. All modifications, replacement methods, or improvements that are in the spirit and according to the principles of the present invention are to be understood as falling within the scope of protection of the invention.

Claims

[1] An intelligent drowning protection bracelet, consisting of a housing (1), characterized by : in the housing (1) a separate mechanical outer space (11) and a sealed water space (12) are provided; in the mechanical outer space (11) a rescue actuation unit (13) is arranged; in the sealed water space (12) a control circuit (14) and a sensor (15) are provided; the sensor (15) serves to detect environmental parameters, the control circuit (14) serves to determine a diving protection status on the basis of the environmental parameters and to control the rescue actuation unit (13). [2] The intelligent drowning protection bracelet according to claim 1, characterized by , that the sensor (15) is a pressure sensor (15); the control circuit (14) is configured to determine whether a drowning threshold has been reached based on the underwater dipters detected in real time by the pressure sensor (15) and the rate of their change. [3] The intelligent drowning protection bracelet according to claim 1, characterized by , that the rescue actuator unit (13) is provided with a gas container (131) for storing high-pressure gas, a mechanical valve device (132) which is controlled by the control circuit (14) to be opened or closed, and air chambers (133) connected to the outlet of the valve device (132); when the control circuit (14) detects a drowning condition, the mechanical valve device (132) is opened so that the high-pressure gas from the gas container (131) is filled into the air chambers (133). [4] The intelligent drowning protection bracelet according to claim 3, characterized by, that a tight-fitting cover plate (121) is attached to the top of the tightly sealed water container (12); the balloon (133) is located in the mechanical outer container (11) and lies above the tight-fitting cover plate (121); one end of the gas cylinder (131) is connected to a mechanical valve (132), the other end passes through the side wall of the case (1) of the bracelet and extends to the outside. [5] The intelligent drowning protection bracelet according to claim 3, characterized by , that the mechanical valve device (132) comprises a valve drive motor (134) and a drive gear (135). [6] The intelligent drowning protection bracelet according to claim 1, characterized by, that the control circuit (14) comprises a main control board (141), a motor drive module (142) and a power management module (143); the input interface of the main control board (141) is connected to the sensor (15), the output interface to the motor drive module (142); the motor drive module (142) is connected to the rescue execution mechanism (13); the power management module (143) supplies power to the control circuit (14). [7] The intelligent drowning protection bracelet according to claim 6, characterized by , that the main control board (141) is equipped with an ESP32 chip (144) and a wireless communication module (145), and that the waterproof container (12) also contains a GPS module (146) which is electrically connected to the main control board (141). [8] The intelligent drowning protection bracelet according to claim 1, characterized by, that several magnets (16) are installed on the top of the case (1) of the bracelet. [9] The intelligent drowning protection bracelet according to claim 1, characterized by , that a battery (147) is provided in the tightly sealed water container (12); a wireless charging induction coil (148) is installed at the bottom of the tightly sealed water container (12), which is electrically connected to the power management module (143) and serves to charge the battery (147). [10] The intelligent drowning protection bracelet according to claim 1, characterized by , that it additionally includes a signal lamp (149) which is arranged on the inside of the tightly sealed water vessel (12) on the side of the motor drive module (142); a light-guiding seal (17) corresponding to the signal lamp (149) is provided on the surface of the housing (1) of the wristband; On the lower sides of the case (1) of the said bracelet, symmetrical connecting lugs (18) are attached, which serve to mount the bracelet strap.

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