An underwater human respiration rate monitoring wearable device

Abstract

This application discloses an underwater wearable device for monitoring human respiratory rate. The inner cavity of the body-hugging shell is divided into a first cavity and a second cavity by a separator. A sealing structure seals the first cavity. A photoelectric sensing unit is fixed within the first cavity. A light reflector is slidably disposed within the second cavity and connected to an elastic reset member. The light reflector has a reflective slope, allowing the photoelectric sensing unit to emit a light beam towards the reflective slope and receive the light beam reflected back by the reflective slope. The wearable assembly connects the light reflector and the body-hugging shell, forming a closed-loop restraint structure around the human chest. When the human chest expands, the wearable assembly drives the light reflector to slide along a first direction; when the human chest contracts, the elastic reset member drives the light reflector to slide along a second direction opposite to the first direction, thereby changing the propagation distance of the light beam between the reflective slope and the photoelectric sensing unit. This device can accurately monitor human respiratory rate underwater, while also providing comfort and convenience.

Description

[0001] This application claims priority to Chinese patent application 202521577459.8, filed on July 25, 2025. The entire contents of the aforementioned Chinese patent application are incorporated herein by reference. Technical Field

[0002] This application relates to the field of human respiratory rate monitoring technology, specifically to an underwater human respiratory rate monitoring wearable device. Background Technology

[0003] Monitoring underwater physiological parameters is crucial in activities such as underwater sports, diving operations, swimming training, and underwater reconnaissance. Among numerous physiological parameters, respiratory rate (also known as breathing frequency) is a key indicator reflecting a person's health and activity level. Continuous collection and analysis of underwater respiratory rate data is essential for both professional athletes adjusting their training intensity and for ordinary diving enthusiasts ensuring their safety by accurately monitoring their breathing rate in real time.

[0004] Traditional methods of monitoring respiratory rate, such as observing chest rise and fall and manually counting with a stopwatch, are simple and easy to implement, but in underwater environments, due to obstructed vision and inconvenient operation, they are difficult to achieve real-time and accurate monitoring. Moreover, these methods often require continuous human monitoring and cannot automatically record and analyze data, which is not conducive to long-term, continuous monitoring needs. With the development of related technologies, some respiratory rate monitoring devices based on electronic sensors have emerged. However, most existing devices are designed for terrestrial environments or ordinary daily scenarios, and their application in underwater environments has many limitations. For example, some respiratory monitoring devices using electrode patches are easily affected by factors such as water flow and water pressure underwater, leading to unstable signal transmission and affecting monitoring accuracy. Other devices based on simple pressure sensing are difficult to distinguish between pressure changes caused by human respiration and external water pressure fluctuations due to the complex and variable underwater pressure environment, and thus cannot adequately meet the requirements for accurate underwater respiratory rate monitoring.

[0005] Furthermore, the underwater environment places extremely high demands on the waterproof performance of equipment. Some existing breath rate monitoring devices are inadequate in terms of waterproof sealing, making them susceptible to water ingress and damage to electronic components, significantly reducing the lifespan and reliability of the equipment. Moreover, in terms of wearing comfort and convenience, many devices are either structurally complex and difficult to wear, or fail to conform well to the human chest, affecting the accurate capture of chest respiratory movements and ultimately hindering accurate breath rate monitoring.

[0006] Therefore, there is an urgent need for a professional monitoring device that can reliably operate in underwater environments, accurately monitor human breathing rate, and also take into account wearable comfort and convenience, in order to meet the growing practical needs for breathing rate monitoring in underwater activities. Utility Model Content

[0007] To address the aforementioned technical issues, this application provides an underwater human respiratory rate monitoring wearable device that can operate reliably in underwater environments, accurately monitor human respiratory rate, and simultaneously ensures wearing comfort and convenience.

[0008] The technical solution adopted in this application is as follows:

[0009] A wearable device for monitoring underwater human breathing rate includes a wearable component and a monitoring module. The monitoring module includes a body-hugging shell, a photoelectric sensing unit, and a light reflector. The inner cavity of the body-hugging shell is divided into a first cavity and a second cavity by a separator, and the first cavity is sealed by a sealing structure. The photoelectric sensing unit is fixed in the first cavity, and the light reflector is slidably disposed in the second cavity and connected to an elastic reset component. The light reflector has a reflective inclined surface that is inclined relative to the photoelectric sensing unit. The photoelectric sensing unit can emit a light beam toward the reflective inclined surface and receive the light beam reflected back by the reflective inclined surface. One end of the wearable component is connected to the light reflector and can form a closed-loop restraint structure around the human chest with the body-hugging shell. When the human chest expands, the wearable component drives the light reflector to slide along a first direction. When the human chest contracts, the elastic reset component drives the light reflector to slide along a second direction opposite to the first direction, thereby changing the propagation distance of the light beam between the reflective inclined surface and the photoelectric sensing unit.

[0010] In this technical solution, the expansion and contraction of the thoracic cavity is converted into the directional sliding of the light reflector through the closed-loop restraint structure of the wearable component. This alters the light propagation distance between the reflective ramp and the photoelectric sensing unit (including the propagation distance of the light beam emitted by the photoelectric sensing unit to the reflective ramp and the propagation distance of the light beam reflected by the reflective ramp to the photoelectric sensing unit). This converts thoracic displacement into a change in the light signal path, accurately reflecting the human respiratory status based on the change in light reflection intensity corresponding to the distance change. This ingeniously achieves the monitoring of the human respiratory rate, and its relatively simple and compact structure makes it suitable for real-time respiratory rate monitoring in underwater environments. Compared to traditional pressure sensors, it offers higher detection accuracy and resistance to water pressure interference. The photoelectric sensing unit, integrating multiple electronic components, is housed within the first cavity, which is reliably sealed by a sealing structure to ensure the photoelectric sensing unit is protected from water immersion, improving the reliability of the device in underwater environments. An elastic reset component ensures that the light reflector periodically resets with respiration, enhancing measurement stability. This solution has low requirements for the sealing of the second cavity, and based on the property that light can propagate in water, the second cavity can even be left unsealed and water can enter. After water enters the second cavity, it will not interfere with or will have minimal interference with the operation of the photoelectric sensing unit in emitting and receiving the reflected light beams onto the reflective inclined surface. Of course, to further ensure the accuracy of monitoring, some sealing measures can be implemented for the second cavity, but these must not affect the movement of the light reflector driven by the wearable component.

[0011] The separator has a recessed cavity, the inner side of which, together with the inner shell, forms a second cavity, and the back side of which, together with the inner shell, forms a first cavity. The volume of the second cavity is larger than that of the first cavity.

[0012] In this technical solution, the separator with a concave cavity structure forms a first cavity and a second cavity with different volumes, which optimizes the spatial layout. The large-volume second cavity provides sufficient sliding space for the light reflector, while the small-volume first cavity can compactly accommodate the photoelectric sensing unit, reducing the overall volume and enhancing wearability.

[0013] The cavity has a mounting groove on its back side, and the photoelectric sensing unit is fixed in the mounting groove. The mounting groove has a light-transmitting part, through which the photoelectric sensing unit emits and receives light beams.

[0014] In this technical solution, the mounting slot and the light-transmitting part ensure that the photoelectric sensing unit is stably installed and that the light beam is effectively propagated. The optical performance can be further optimized by optimizing the selection of the light-transmitting part material.

[0015] The body-hugging outer shell includes a shell and a cover plate that covers the shell. The cover plate is used to fit against human skin. The first cavity is located on the side of the separator facing away from the cover plate, and the second cavity is located on the side of the separator facing the cover plate.

[0016] In this technical solution, the split design of the close-fitting outer shell facilitates assembly and maintenance, and the cover plate directly fits the skin to reduce the feeling of foreign objects and improve wearing comfort. By placing the first cavity on the side of the separator away from the cover plate and the second cavity on the side of the separator facing the cover plate, the light reflector is positioned relatively close to the human chest, so that the expansion and contraction of the human chest can more accurately act on the light reflector through the wearable components, thereby improving the monitoring accuracy.

[0017] The separator is fixedly connected to the housing by screws, and a sealing gasket for sealing the first cavity is provided between the separator and the housing, with the screws passing through the sealing gasket.

[0018] In this technical solution, screw connection achieves rigid fixation between the partition and the housing, and the sealing gasket fills the gap between the two to ensure the sealing effect of the first cavity. The screw penetrates the sealing gasket, which can increase the limiting effect of the sealing gasket and improve the sealing reliability. In addition, compared with connecting the partition to the cover plate, connecting the partition to the housing helps to reduce the opening of the cover plate, ensure the integrity of the cover plate surface, and increase the skin-friendly comfort.

[0019] The elastic reset component is configured as an elastic band, the separator is provided with a first screw hole, the light reflector is provided with multiple second screw holes, and the underwater human breathing rate monitoring wearable device further includes a first positioning component and a second positioning component. The first positioning component is fixedly connected to the first screw hole by a screw and clamps one end of the elastic band. The second positioning component is fixedly connected to the second screw hole by a screw and clamps the other end of the elastic band. The multiple first screw holes are arranged at intervals along the sliding direction of the light reflector, and the multiple second screw holes are arranged at intervals along the sliding direction of the light reflector.

[0020] In this technical solution, the elastic band provides a stable restoring force as an elastic reset component. Moreover, compared with metal springs, the elastic band can avoid the risk of corrosion. The arrangement of the first screw hole and the second screw hole allows the tension of the elastic band to be flexibly adjusted when the first positioning component is matched with different first screw holes or the second positioning component is matched with different second screw holes, thereby adapting to different body shapes and breathing force requirements and improving the versatility of the device.

[0021] The body-hugging outer shell has a guide hole that connects the second cavity to the outside. A guide plate is provided in the guide hole. One end of the guide plate is connected to the wearable component, and the other end is fixedly connected to the light reflector. The cooperation between the guide plate and the guide hole guides the light reflector to slide along the first direction and the second direction.

[0022] In this technical solution, the cooperation between the guide hole and the guide plate constrains the linear sliding of the light reflector, improves motion accuracy, eliminates optical path offset errors caused by skewness, and enhances measurement accuracy, thereby improving the accuracy of respiratory rate monitoring, while providing a stable connection structure for wearable components.

[0023] The guide plate is equipped with multiple rollers arranged at intervals along its length on both sides, and moves along the inner wall of the guide hole by means of the rollers.

[0024] In this technical solution, the roller reduces the frictional resistance between the guide plate and the guide hole, converting the rolling of the roller into the sliding of the light reflector, making the sliding of the light reflector smoother, improving the device's sensitivity to minute breathing movements, and further enhancing monitoring accuracy.

[0025] The device also includes a power supply control module, which includes a protective shell with a waterproof cavity. The protective shell is connected to the body shell via a flexible strip. The waterproof cavity houses a control motherboard and a battery module. The flexible strip contains multiple wires that connect the control motherboard and the battery module to the photoelectric sensing unit, respectively, to achieve power transmission and signal transmission.

[0026] In this technical solution, the power supply control module is set up independently from the monitoring module, which helps to reduce chest load and improve wearing comfort. The waterproof design of the power supply control module ensures that the electronic components work safely underwater. The monitoring module and the power supply control module are connected by a flexible band, which allows for flexible adjustment according to different body parts and other dimensions, making it easy to wear and avoiding discomfort or displacement caused by rigid connections. Multiple wires are integrated into the flexible band. On the one hand, the deformation characteristics of the flexible band itself can reduce bending fatigue of the wires, providing a certain degree of protection against damage from external forces such as pulling and water flow impact in the underwater environment, thus extending service life. On the other hand, it makes the overall structure of the device more compact and regular, reducing problems such as entanglement caused by exposed wires, improving the reliability and ease of use of the device, facilitating normal operation and monitoring activities when worn underwater, and reducing external exposed interfaces, thus reducing the risk of wires becoming loose or water entering due to water flow impact.

[0027] The wearable component includes a first connecting strap and a second connecting strap. The first connecting strap connects to the light reflector, and the second connecting strap connects to the protective shell. The free extension ends of the first connecting strap and the second connecting strap are respectively provided with matching Velcro assemblies. The closed-loop restraint structure is formed by the detachable adhesive fit of the Velcro assemblies.

[0028] In this technical solution, the detachable design of the Velcro component makes it easy for users to wear and adjust, and also allows for fine-tuning of the tightness of the fit, ensuring a close fit between the device and the human chest. At the same time, its underwater reliability ensures stable monitoring in scenarios such as swimming or diving. Attached Figure Description

[0029] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0030] Figure 1 Assembly of the underwater human respiratory rate monitoring wearable device provided in the embodiments of this application Figure 1 ;

[0031] Figure 2 Assembly of the underwater human respiratory rate monitoring wearable device provided in the embodiments of this application Figure 2 ;

[0032] Figure 3 This is a cross-sectional view of the monitoring module provided in an embodiment of this application;

[0033] Figure 4 This is an assembly diagram of a portion of the structure of the monitoring module provided in the embodiments of this application;

[0034] Figure 5 Schematic diagram of the structure of the separator provided in the embodiments of this application Figure 1 ;

[0035] Figure 6 Schematic diagram of the structure of the separator provided in the embodiments of this application Figure 2 ;

[0036] Figure 7 This is an assembly diagram of the separator and the photoelectric sensing unit provided in the embodiments of this application;

[0037] Figure 8 A schematic diagram of the shell and cover plate of the close-fitting outer casing provided in the embodiments of this application;

[0038] Figure 9 This is a schematic diagram of the structure of the sealing gasket provided in the embodiments of this application;

[0039] Figure 10 This is a schematic diagram of the structure of the light reflector provided in the embodiments of this application;

[0040] Figure 11 This is an assembly drawing of the light reflector, guide plate, and roller provided in the embodiments of this application;

[0041] Figure 12This is a cross-sectional view of the underwater human respiratory rate monitoring wearable device provided in the embodiments of this application;

[0042] Figure 13 This is a schematic diagram of the structure of the flexible strip provided in an embodiment of this application;

[0043] Figure 14 This is a diagram illustrating the changes in the thoracic cavity during human respiration, provided in an embodiment of this application.

[0044] Figure 15 This is a schematic diagram of the beam propagation of the photoelectric sensing unit and the separator provided in the embodiments of this application.

[0045] List of components and reference numerals:

[0046] 1 Wearable component, 11 First connecting strap, 12 Second connecting strap;

[0047] 2 Monitoring module, 21 Close-fitting outer shell, 211 Housing, 2111 Guide hole, 212 Cover plate, 22 Photoelectric sensing unit, 221 Photoelectric emitting module, 222 Light receiving module, 23 Light reflector, 231 Reflective slope, 232 Second screw hole, 24 Separator, 241 Cavity, 242 Mounting groove, 243 Light-transmitting part, 244 First screw hole, 25 First cavity, 26 Second cavity, 27 Elastic reset component, 28 Sealing gasket, 291 First positioning component, 292 Second positioning component, 293 Guide plate, 2931 Pull ring, 294 Roller;

[0048] 3 Power supply control module, 31 Protective housing, 32 Control motherboard, 33 Battery module, 34 Push button switch, 35 Waterproof connector;

[0049] 4 flexible strips, 41 conductors. Detailed Implementation

[0050] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0051] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0052] Furthermore, it should be understood in the description of this application that the terms "upper," "lower," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," "lateral," and "longitudinal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0053] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0054] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0055] In the embodiments of this application, reference is made to Figures 1 to 15 As shown, an underwater wearable device for monitoring human respiratory rate is provided. For ease of explanation and understanding, the following descriptions are based on the illustrated product structure. Of course, those skilled in the art will understand that the above structure is merely a specific example and illustrative illustration, and does not constitute a specific limitation on the technical solution provided in this application.

[0056] like Figure 1 , Figure 2 and Figure 3As shown, the underwater human breathing rate monitoring wearable device provided in this application includes a wearable component 1 and a monitoring module 2. The monitoring module 2 includes a body-hugging shell 21, a photoelectric sensing unit 22, and a light reflector 23. The inner cavity of the body-hugging shell 21 is divided into a first cavity 25 and a second cavity 26 by a separator 24, and the first cavity 25 is sealed by a sealing structure. The photoelectric sensing unit 22 is fixed in the first cavity 25, and the light reflector 23 is slidably disposed in the second cavity 26 and connected to an elastic reset member 27. The light reflector 23 is inclined relative to the photoelectric sensing unit 22. The reflective inclined surface 231 allows the photoelectric sensing unit 22 to emit a light beam towards and receive the light beam reflected back from the reflective inclined surface 231. One end of the wearable component 1 is connected to the light reflector 23 and can form a closed-loop binding structure around the human chest with the body shell 21. When the human chest expands, the wearable component 1 drives the light reflector 23 to slide along a first direction. When the human chest contracts, the elastic reset component 27 drives the light reflector 23 to slide along a second direction opposite to the first direction, thereby changing the propagation distance of the light beam between the reflective inclined surface 231 and the photoelectric sensing unit 22. Figure 3 The arrow X1 shown represents the first direction, and the arrow X2 represents the second direction.

[0057] Specifically, such as Figure 14As shown, during human respiration, the rib cage contracts along the X direction when exhaling and expands along the Y direction when inhaling. The circumference of the rib cage changes rhythmically with respiration. By capturing this change in rib cage circumference, the respiratory rate can be easily obtained. Therefore, in this technical solution, the closed-loop restraint structure of the wearable component 1 converts the expansion and contraction motion of the rib cage into the directional sliding of the light reflector 23, thereby changing the light propagation distance between the reflective inclined surface 231 and the photoelectric sensing unit 22 (including the propagation distance of the light beam emitted by the photoelectric sensing unit 22 to the reflective inclined surface 231 and the propagation distance of the light beam reflected by the reflective inclined surface 231 to the photoelectric sensing unit 22). This converts the rib cage displacement into a change in the light signal path, which can accurately reflect the human breathing status based on the change in light reflection intensity corresponding to the change in distance. This ingeniously realizes the monitoring of the human respiratory rate, and the structure is relatively simple and compact, suitable for real-time respiratory rate monitoring in underwater environments. Compared with traditional pressure sensors, it has higher displacement detection accuracy and resistance to water pressure interference. A photoelectric sensing unit 22 integrating multiple electronic components is disposed within the first cavity 25. The first cavity 25 is reliably sealed by a sealing structure to ensure that the photoelectric sensing unit 22 is not immersed in water, thereby improving the reliability of the device in underwater environments. An elastic reset component 27 ensures that the light reflector 23 resets periodically with breathing, improving measurement stability. This design has lower requirements for the sealing of the second cavity 26, and based on the characteristic that light can propagate in water, the second cavity 26 can even be left unsealed and allow water to enter. Water entering the second cavity 26 will not interfere with or will minimally interfere with the photoelectric sensing unit 22's operation of emitting and receiving light beams onto the reflective inclined surface 231. Of course, to further ensure monitoring accuracy, some sealing measures can be implemented for the second cavity 26, but these should not affect the movement of the light reflector 23 driven by the wearable component 1. Preferably, the photoelectric sensing unit 22 can employ a suitable optical sensor, such as a PPG sensor (a sensor utilizing photoplethysmography technology). Figure 15 As shown, the device includes a photoelectric emitting module 221 and a light receiving module 222. The photoelectric emitting module 221 emits a light beam, and the light receiving module 222 receives the reflected light beam. During respiration, the change in the circumference of the thoracic cavity is caused by the reciprocating movement of the light reflector 23, which causes the reflection position of the light beam from the photoelectric sensing unit 22 on the reflective inclined surface 231 to change repeatedly. Since the reflective inclined surface 231 is designed as an inclined surface, the light reflection intensity at each position is different. By capturing the change in the intensity of the reflected light, the required respiratory rate can be measured. This application does not limit the material of the light reflector 23; it can be made of metal, plastic, ceramic, alloy, stainless steel, polyetheretherketone, polyoxymethylene, etc. The reflectivity of the reflective inclined surface 231 can also be improved by surface treatment methods such as coating, polishing, and coating.

[0058] As a preferred embodiment of this application, such as Figure 3 , Figure 4 and Figure 5 As shown, the separator 24 has a recess 241. The inner side of the recess 241 and the inner shell 21 form a second cavity 26, and the back side of the recess 241 and the inner shell 21 form a first cavity 25. The volume of the second cavity 26 is larger than that of the first cavity 25. In this technical solution, the separator 24 with the recess 241 structure forms a first cavity 25 and a second cavity 26 with different volumes, which optimizes the spatial layout. The larger volume of the second cavity 26 provides sufficient sliding space for the light reflector 23, while the smaller volume of the first cavity 25 can compactly accommodate the photoelectric sensing unit 22, reducing the overall volume and enhancing wearing comfort.

[0059] Furthermore, such as Figure 6 and Figure 7 As shown, a mounting groove 242 is provided on the back side of the recessed cavity 241. The photoelectric sensing unit 22 is fixed in the mounting groove 242, and a light-transmitting part 243 is provided in the mounting groove 242. The photoelectric sensing unit 22 emits and receives light beams through the light-transmitting part 243. In this technical solution, the arrangement of the mounting groove 242 and the light-transmitting part 243 ensures that the photoelectric sensing unit 22 is stably installed and that the light beam is effectively propagated. The optical performance can be further optimized by optimizing the selection of the material of the light-transmitting part 243. In specific implementation, the photoelectric sensing unit 22 can be fixed in the mounting groove 242 with screws to ensure installation stability. Preferably, the light-transmitting part 243 can be a light-transmitting hole to ensure light beam propagation. In addition, a sealing material such as a sealing ring can be provided between the photoelectric sensor and the light-transmitting part 243 to ensure that the light-transmitting hole is transparent but not water-transparent, thereby improving the sealing performance of the first cavity 25. The light-transmitting part 243 can also be set as a solid light-transmitting structure that is different from the hole structure, such as transparent glass.

[0060] As a preferred embodiment of this application, such as Figure 3 , Figure 4 and Figure 8 As shown, the body-hugging outer shell 21 includes a shell 211 and a cover plate 212 that covers the shell 211. The cover plate 212 is used to conform to human skin. The first cavity 25 is located on the side of the separator 24 away from the cover plate 212, and the second cavity 26 is located on the side of the separator 24 facing the cover plate 212. In this technical solution, the split design of the body-hugging outer shell 21 facilitates assembly and maintenance. Specifically, the shell 211 and the cover plate 212 can be detachably connected by screws. The cover plate 212 is designed as an arc-shaped structure that conforms to the skin, reducing the feeling of foreign objects and improving wearing comfort. By placing the first cavity 25 on the side of the separator 24 away from the cover plate 212 and the second cavity 26 on the side of the separator 24 facing the cover plate 212, the light reflector 23 is positioned relatively close to the human chest cavity. This allows the expansion and contraction of the human chest cavity to be more accurately acted upon by the wearable component 1 on the light reflector 23, improving monitoring accuracy.

[0061] Furthermore, such as Figure 3 and Figure 9 As shown, the separator 24 and the housing 211 are fixedly connected by screws. A sealing gasket 28 for sealing the first cavity 25 is provided between the separator 24 and the housing 211, and the screws pass through the sealing gasket 28. The screw connection enables the separator 24 and the housing 211 to be rigidly and detachably fixed, which facilitates the maintenance of the photoelectric sensing unit 22. The sealing gasket 28 fills the gap between the two to ensure the sealing effect of the first cavity 25. The screw passing through the sealing gasket 28 can increase the limiting effect of the sealing gasket 28 and improve the sealing reliability. Specifically, through holes can be opened in the cover plate 212 and the sealing gasket 28, and corresponding screw holes can be provided in the housing 211. The screw passes through the through holes and connects with the screw holes to achieve fixation. In addition, compared with connecting the separator 24 to the cover plate 212, connecting the separator 24 to the housing 211 helps to reduce the number of openings in the cover plate 212, ensures the integrity of the cover plate 212 surface, and increases the skin-friendly comfort.

[0062] As a preferred embodiment of this application, such as Figure 4 , Figure 5 and Figure 10 As shown, the elastic reset member 27 is an elastic band, the separator 24 has a first screw hole 244, the light reflector 23 has multiple second screw holes 232, and the underwater human breathing rate monitoring wearable device also includes a first positioning member 291 and a second positioning member 292. The first positioning member 291 is fixedly connected to the first screw hole 244 by screws and clamps one end of the elastic band. The second positioning member 292 is fixedly connected to the second screw hole 232 by screws and clamps the other end of the elastic band. The multiple first screw holes 244 are arranged at intervals along the sliding direction of the light reflector 23, and the multiple second screw holes 232 are arranged at intervals along the sliding direction of the light reflector 23. This application does not limit the material of the elastic band. In a preferred embodiment, the elastic band can be made of silicone rubber, thermoplastic polyurethane, thermoplastic polyester, etc. The elastic band and the wearable component 1 can be connected to the two ends of the light reflector 23, and the reflective inclined surface 231 is located between them. The first positioning member 291 and the second positioning member 292 can adopt the same structure and have universality. In this technical solution, the elastic band, acting as the elastic reset element 27, provides a stable reset force. Furthermore, compared to a metal spring, the elastic band avoids the risk of corrosion. The arrangement of the first screw hole 244 and the second screw hole 232 allows for flexible adjustment of the elastic band tension when the first positioning element 291 engages with different first screw holes 244 or the second positioning element 292 engages with different second screw holes 232. This adapts to different body shapes and breathing force requirements, improving the versatility of the device. When it is necessary to adjust the tension of the elastic band, either the fixed position of the first positioning element 291 on the separator 24 or the fixed position of the second positioning element 292 on the light reflector 23 can be adjusted.

[0063] As a preferred embodiment of this application, such as Figure 3 , Figure 4 and Figure 11 As shown, the outer shell 21 has a guide hole 2111 that connects the second cavity 26 to the outside. A guide plate 293 is provided within the guide hole 2111. One end of the guide plate 293 is connected to the wearable component 1, and the other end is fixedly connected to the light reflector 23. The cooperation between the guide plate 293 and the guide hole 2111 guides the light reflector 23 to slide along a first direction and a second direction. In this technical solution, the cooperation between the guide hole 2111 and the guide plate 293 constrains the linear sliding of the light reflector 23, improving motion accuracy, eliminating optical path offset errors caused by skewness, and improving measurement accuracy, thereby improving the accuracy of respiratory rate monitoring. It also provides a stable connection structure for the wearable component 1. In a preferred embodiment, to facilitate the connection between the wearable component 1 and the guide plate 293, a pull ring 2931 can be provided at one end of the guide plate 293, through which the wearable component 1 is threaded and connected. The guide plate 293 and the light reflector 23 can be fixedly connected by screws.

[0064] In a preferred embodiment, such as Figure 11 As shown, multiple rollers 294 are installed on both sides of the guide plate 293, spaced apart along its length. These rollers 294 move along the inner wall of the guide hole 2111. Compared to sliding friction, the rollers 294 reduce the frictional resistance between the guide plate 293 and the guide hole 2111, converting the rolling motion of the rollers 294 into the sliding motion of the light reflector 23. This makes the sliding of the light reflector 23 smoother, improves the device's sensitivity to minute breathing movements, and further enhances monitoring accuracy.

[0065] As a preferred embodiment of this application, such as Figure 1 , Figure 2 , Figure 3 , Figure 12 and Figure 13As shown, the monitoring device also includes a power supply control module 3. The power supply control module 3 includes a protective shell 31 with a waterproof cavity. The protective shell 31 is connected to the body shell 21 via a flexible strip 4. The waterproof cavity contains a control motherboard 32 and a battery module 33. The flexible strip 4 contains multiple wires 41. The multiple wires 41 connect the control motherboard 32 and the battery module 33 to the photoelectric sensing unit 22 respectively to realize power transmission and signal transmission. In this technical solution, the power supply control module 3 is set independently from the monitoring module 2, which helps to reduce chest load and improve wearing comfort. The waterproof design of the power supply control module 3 ensures that the electronic components work safely underwater. The monitoring module 2 and the power supply control module 3 are connected by a flexible band 4, which allows for flexible adjustment according to different body parts and other dimensions, making it easy to wear and avoid discomfort or displacement caused by rigid connections. Multiple wires 41 are integrated into the flexible band 4. On the one hand, the deformation characteristics of the flexible band 4 itself can reduce bending fatigue of the wires 41, providing a certain degree of protection for the wires 41 and preventing them from being damaged by external forces such as pulling and water flow impact in the underwater environment, thus extending their service life. On the other hand, it makes the overall structure of the device more compact and regular, reducing problems such as entanglement that may be caused by exposed wires 41, improving the reliability and ease of use of the device, facilitating normal operation and monitoring activities when worn underwater, and reducing external exposed interfaces, thus reducing the risk of wires 41 becoming loose or water entering due to water flow impact. Specifically, the protective shell 31 can also adopt a split structure, with each split part sealed by a sealant. The through holes provided in the inner shell 21 and the protective shell 31 for the flexible strip 4 to pass through can also be sealed by sealants. The control mainboard 32 is used to control the operation of the device and to collect and analyze data. In a preferred embodiment, the flexible strip 4 can be made of silicone, which has good flexibility and waterproof properties and a long service life; the two ends of the flexible strip 4 can be clamped and fixed to the inner shell 21 and the protective shell 31 by flanges and screws. In addition, in a preferred embodiment, such as Figure 12 As shown, a push-button switch 34 can also be installed on the protective housing 31 to enable the device to start when powered on and stop when powered off. Furthermore, in another preferred embodiment, a waterproof connector 35 can be installed on the protective housing 31. The waterproof connector 35 is used to connect to the sonar communication system and charge the battery module 33. Connecting to the sonar communication system allows the monitored respiratory rate information to be uploaded to the terminal device. The waterproof connector 35 can be a magnetic or threaded locking multi-pin connector, integrating charging electrodes and data communication electrodes.

[0066] Furthermore, such as Figure 2 and Figure 3 As shown, the wearable component 1 includes a first connecting strap 11 and a second connecting strap 12, the first connecting strap 11 connecting the light reflector 23. Figure 3Only a portion of the first connecting strap 11 is shown in the figure. The first connecting strap 11 is connected to the light reflector 23 indirectly through the pull ring 2931 of the guide plate 293. The second connecting strap 12 is connected to the protective shell 31. The free extension ends of the first connecting strap 11 and the second connecting strap 12 are respectively provided with matching Velcro assemblies. The Velcro assemblies are detachably bonded to form a closed-loop binding structure, which is convenient to be directly bound to the chest area of ​​the human body. Figure 2 The diagram shows the first connecting strap 11 and the second connecting strap 12 being attached together via a Velcro assembly. In this technical solution, the detachable design of the Velcro assembly facilitates user wearing and adjustment, and allows for fine-tuning of the tightness, ensuring a close fit between the device and the human chest. Simultaneously, its underwater reliability guarantees stable monitoring in swimming or diving scenarios. Specifically, the second connecting strap 12 can be fixed to the protective housing 31 with screws.

[0067] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0068] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0069] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. An underwater human respiration rate monitoring wearable device, characterized by, The device includes wearable components and a monitoring module. The monitoring module includes a body shell, a photoelectric sensing unit, and a light reflector. The inner cavity of the body shell is divided into a first cavity and a second cavity by a separator, and the first cavity is sealed by a sealing structure. The photoelectric sensing unit is fixed in the first cavity, and the light reflector is slidably disposed in the second cavity and connected to an elastic reset member. The light reflector is provided with a reflective inclined surface that is tilted relative to the photoelectric sensing unit. The photoelectric sensing unit is able to emit a light beam toward the reflective inclined surface and receive the light beam reflected back by the reflective inclined surface. One end of the wearable component is connected to the light reflector and can form a closed-loop binding structure around the human chest with the body-hugging shell. When the human chest expands, the wearable component drives the light reflector to slide along a first direction. When the human chest contracts, the elastic reset component drives the light reflector to slide along a second direction opposite to the first direction, thereby changing the propagation distance of the light beam between the reflective inclined surface and the photoelectric sensing unit.

2. The underwater human respiratory rate monitoring wearable device according to claim 1, characterized in that, The separator has a recessed cavity, the inner side of which, together with the inner shell, forms a second cavity, and the back side of which, together with the inner shell, forms a first cavity. The volume of the second cavity is larger than that of the first cavity.

3. The underwater human respiratory rate monitoring wearable device according to claim 2, characterized in that, The cavity has a mounting groove on its back side, and the photoelectric sensing unit is fixed in the mounting groove. The mounting groove has a light-transmitting part, through which the photoelectric sensing unit emits and receives light beams.

4. The underwater human respiratory rate monitoring wearable device according to claim 1, characterized in that, The body-hugging outer shell includes a shell and a cover plate that covers the shell. The cover plate is used to fit against human skin. The first cavity is located on the side of the separator facing away from the cover plate, and the second cavity is located on the side of the separator facing the cover plate.

5. The underwater human respiratory rate monitoring wearable device according to claim 4, characterized in that, The separator is fixedly connected to the housing by screws, and a sealing gasket for sealing the first cavity is provided between the separator and the housing, with the screws passing through the sealing gasket.

6. The underwater human respiratory rate monitoring wearable device according to claim 1, characterized in that, The elastic reset component is configured as an elastic band, the separator is provided with a first screw hole, the light reflector is provided with multiple second screw holes, and the underwater human breathing rate monitoring wearable device further includes a first positioning component and a second positioning component. The first positioning component is fixedly connected to the first screw hole by a screw and clamps one end of the elastic band. The second positioning component is fixedly connected to the second screw hole by a screw and clamps the other end of the elastic band. The multiple first screw holes are arranged at intervals along the sliding direction of the light reflector, and the multiple second screw holes are arranged at intervals along the sliding direction of the light reflector.

7. The underwater human respiratory rate monitoring wearable device according to claim 1, characterized in that, The body-hugging outer shell has a guide hole that connects the second cavity to the outside. A guide plate is provided in the guide hole. One end of the guide plate is connected to the wearable component, and the other end is fixedly connected to the light reflector. The cooperation between the guide plate and the guide hole guides the light reflector to slide.

8. The underwater human respiratory rate monitoring wearable device according to claim 7, characterized in that, The guide plate is equipped with multiple rollers arranged at intervals along its length on both sides, and moves along the inner wall of the guide hole by means of the rollers.

9. The underwater human respiratory rate monitoring wearable device according to claim 1, characterized in that, It also includes a power supply control module, which includes a protective shell with a waterproof cavity. The protective shell is connected to the body shell by a flexible strip. The waterproof cavity houses a control motherboard and a battery module. The flexible strip contains multiple wires that connect the control motherboard and the battery module to the photoelectric sensing unit to achieve power transmission and signal transmission.

10. The underwater human respiratory rate monitoring wearable device according to claim 9, characterized in that, The wearable component includes a first connecting strap and a second connecting strap. The first connecting strap connects to the light reflector, and the second connecting strap connects to the protective shell. The free extension ends of the first connecting strap and the second connecting strap are respectively provided with matching Velcro assemblies. The closed-loop restraint structure is formed by the detachable adhesive fit of the Velcro assemblies.

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