Self-adaptive waistline measurement and visceral fat early warning waistband

Abstract

The self-adaptive waistline measurement and visceral fat early warning waistband comprises a waistband body and a tightening measurement assembly, one end of the waistband body is wound in the tightening measurement assembly, and automatic tightening and retraction are achieved through a waistband winding assembly; the tightening measurement assembly is in signal connection with an electrode patch assembly, and the electrode patch assembly comprises a pair of excitation electrode patches, a pair of detection electrode patches and a patch pressure sensor used for monitoring contact pressure; a storage battery and a control main board are further arranged in the tightening measuring assembly shell. According to the device, the consistent tightening degree of the waistband during measurement is ensured through the patch pressure sensor, and the stretching length of the waistband is accurately measured through the angle sensor integrated on the clamping roller to obtain waistline data; a bioelectrical impedance measurement module in the control main board obtains human body impedance information through an electrode patch, an early warning and analysis module fuses waistline and impedance data, the visceral fat area is estimated through a built-in model, and risk early warning and personalized nutrition intervention suggestions are generated.

Description

TECHNICAL FIELD

[0001] The present application relates to a waistband, in particular a self-adaptive waist circumference measurement and visceral fat early warning waistband, and belongs to the technical field of intelligent medical detection equipment. BACKGROUND

[0002] In the field of clinical nutrition management and health monitoring, accurately and conveniently measuring human waist circumference and assessing visceral fat content is crucial for preventing and managing obesity, diabetes and other metabolic diseases. At present, the common waist circumference measurement tools are mostly manual tape measures, which have obvious limitations. First, the measurement process relies on manual operation, and the tightness and reading angle can easily introduce errors, resulting in poor data repeatability and comparability. Second, the simple waist circumference value cannot effectively distinguish between subcutaneous fat and visceral fat, and the latter is the core indicator of cardiovascular disease and metabolic risk, which limits the value of ordinary waist circumference measurement in clinical early warning.

[0003] Some existing technologies have attempted to improve the above problems, for example, a three-color automatic warning anti-obesity waistband disclosed in publication number CN202122163U, which sets a metal sheet and a tension spring in the waistband, and uses the perspective hole on the waistband buckle to observe different color segments to warn the user of the satiety of the stomach. This scheme can provide an intuitive warning, but it is essentially a mechanical and qualitative rough estimate, and cannot achieve accurate quantitative measurement of waist circumference, let alone direct assessment of visceral fat, a key physiological indicator. For another example, a multifunctional health detection intelligent waistband disclosed in publication number CN118383574A, which adjusts the waistband length based on the detection value of the pressure sensor through the belt length adjuster and collects waist circumference data, and calculates calorie intake in combination with the motion sensor and food information. This scheme reflects the trend of intelligence and multi-parameter integration, but its technical core focuses on indirectly estimating body weight and managing daily energy balance through waist circumference changes, and does not involve directly analyzing body composition through bioelectrical impedance technology, especially cannot achieve special estimation and risk warning of visceral fat area in the human body. SUMMARY

[0004] The purpose of the present application is to solve the problems of inaccurate measurement, single function, and inability to accurately assess visceral fat risk and provide intervention guidance of the above-mentioned waistband, and to provide a self-adaptive waist circumference measurement and visceral fat early warning waistband.

[0005] The application realizes the above-mentioned purpose through the following technical scheme: a self-adaptive waistline measurement and visceral fat early warning waistband, comprising a waistband body and a tightening measurement assembly, one end of the waistband body is wound in the tightening measurement assembly, the tightening measurement assembly is signal connected with an electrode patch assembly, the electrode patch assembly comprises a pair of excitation electrode patches and a pair of detection electrode patches, a patch pressure sensor is arranged at the center part of the electrode patch assembly; The tightening measurement assembly comprises a shell, a waistband winding assembly is arranged in the shell, the belt body of the waistband body is wound on the waistband winding assembly in the shell, a storage battery and a control mainboard are further arranged in the shell, the storage battery is electrically connected with each electrical element of the waistband, and the control mainboard is signal connected with each electrical element of the waistband.

[0006] As a further scheme of the application: the other end of the waistband body is fixedly connected with a positioning clamping strip, and the belt body of the waistband body is provided with a scale line.

[0007] As a further scheme of the application: a recycling clamping groove is formed in one side of the shell body, and the positioning clamping strip in the recycling clamping groove is in a folding state, a measurement clamping groove is formed in the other side of the shell body, and the positioning clamping strip in the measurement clamping groove is in a measurement state.

[0008] As a further scheme of the application: the front end face shell body of the shell is connected with an indicator light, a start-up button, a start-up button and a display screen, the connection positions of the start-up button, the indicator light and the start-up button are arranged in a side-by-side manner at the bottom of the front end face shell body of the shell, and the connection position of the display screen is located at the middle part of the front end face shell body of the shell.

[0009] As a further scheme of the application: the electrode patch assembly further comprises an electrode substrate and a ring-shaped electrode patch, the ring-shaped electrode patch and the patch pressure sensor are both connected to the electrode substrate and are attached to one side of the human skin.

[0010] As a further scheme of the application: the ring-shaped electrode patch and the patch pressure sensor are both connected with signal lines, the other end of the signal lines is connected with an insertion connector, the front end face shell body of the shell is connected with an insertion socket connected with the control mainboard, and the insertion connector is connected with the insertion socket in a matched manner.

[0011] As a further scheme of the application: the attachment positions of each electrode patch of the electrode patch assembly are all located on the inner side of the waistband body, the excitation electrode patches of the electrode patch assembly are respectively attached to the vicinity of the spine in front of and behind the abdominal part of the human body, and the detection electrode patches of the electrode patch assembly are respectively attached to the two sides of the waist.

[0012] As a further scheme of the application: two clamping rollers are further rotatably connected in the shell of the shell, the two clamping rollers are respectively clamped on the two sides of the belt body of the waistband body, and the clamping rollers are integrated with angle sensors.

[0013] As a further scheme of the present application: the waistband winding assembly comprises a limiting plate, a winding shaft and a winding motor, the body of the winding motor is fixedly connected to the inner bottom of the shell, the motor shaft of the winding motor is fixedly connected coaxially with the winding shaft, the upper end of the winding shaft is rotatably connected to the inner top of the shell, and the limiting plate is fixedly connected to the shaft body of the winding shaft and clamped on the upper and lower sides of the waistband body wound by the shaft body of the winding shaft.

[0014] As a further scheme of the present application: the control mainboard comprises but is not limited to the following modules: a main controller module, which executes the firmware program stored in the memory, coordinates and schedules all other functional modules, and performs data aggregation, logical judgment and instruction distribution; a data storage module connected with the main controller module, used for storing system firmware, visceral fat estimation algorithm model, user personal physiological parameters such as age, gender, height, historical measurement data and system configuration parameters; a motor drive module connected with the main controller module and the winding motor in the waistband winding assembly, receiving instructions from the main controller and outputting accurate pulse width modulation signals to control the forward rotation, reverse rotation, stop and rotation speed of the winding motor, so as to realize automatic tightening and retraction of the waistband; a bioelectrical impedance measurement module connected with the main controller module and the electrode patch assembly, generating a safe, weak and specific frequency (such as kHz) alternating excitation signal, injecting the signal into the human body through the excitation electrode patch, measuring the voltage drop signal after passing through the human body tissue through the detection electrode patch, amplifying, filtering and analog-digital converting the measured voltage signal, finally calculating the bioelectrical impedance value of the human body and transmitting it to the main controller module; a length calculation module connected with the main controller module, which calculates the waist circumference length in real time, accurately obtains the rotation angle of the clamping roller by reading the signal of the angle sensor connected to the clamping roller, and then calculates the accurate extension length of the waistband according to the shaft circumference; a warning and analysis module integrated in the main controller module, receiving real-time waist circumference data from the length calculation module and bioelectrical impedance data from the bioelectrical impedance measurement module; running the pre-stored visceral fat estimation model, taking the waist circumference, bioelectrical impedance, user age, gender, etc. as input features to estimate the visceral fat area of the user; comparing the estimated visceral fat area with the pre-set clinical risk threshold to generate different levels of risk warning signals; based on the warning result and body composition data, generating personalized nutrition intervention suggestions; a communication module connected with the main controller module, used for data interaction with external devices; a power management module connected with the storage battery, responsible for providing stable and different voltage level power supply for the entire control mainboard and various external devices.

[0015] The beneficial effects of the present application are: 1、The waistband body, the tightening measurement assembly, and the electrode patch assembly are provided, the electrode patch assembly includes a pair of excitation electrode patches and a pair of detection electrode patches, a patch pressure sensor is arranged at the central part of the electrode patch assembly, the waistband body is rolled in the tightening measurement assembly, the length can be automatically adjusted to adapt to users with different body shapes, the excitation electrode patches and the detection electrode patches of the electrode patch assembly are configured to use, the accuracy of bioelectrical impedance measurement can be improved, the patch pressure sensor can ensure that the electrodes maintain good contact with the skin, and when the tightening measurement assembly tightens the waistband body, the tightening degree of the waistband body can be reflected by the pressure value of the patch pressure sensor, so that the waistband body is rolled in place, and accurate waist circumference measurement values can be obtained. 2、The tightening measurement assembly includes a shell, a waistband rolling assembly is arranged in the shell, the waistband body is rolled on the waistband rolling assembly in the shell, a storage battery and a control mainboard are further arranged in the shell, the storage battery is electrically connected with each electrical element of the waistband, and the control mainboard is signal-connected with each electrical element of the waistband, the shell provides structural protection and support for the entire tightening measurement assembly; the waistband rolling assembly is responsible for automatic release and recovery of the waistband; the storage battery provides independent power supply for all electrical elements, ensuring the portability of the equipment; and the control mainboard coordinates all processes such as rolling, measurement, data analysis, etc. through signal connection, so that the waistband can perform self-adaptive and self-measurement, and the technical problems that the traditional measurement method is complicated, has large error and cannot perform internal fat early warning are solved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole structure schematic view of the present application; Figure 2 It is a waistband body, a tightening measurement assembly and an electrode patch assembly structure schematic view of the present application; Figure 3 It is a tightening measurement assembly external structure schematic view of the present application; Figure 4 It is a tightening measurement assembly top view sectional structure schematic view of the present application; Figure 5 It is a tightening measurement assembly front view sectional structure schematic view of the present application; Figure 6 It is an electrode patch assembly structure schematic view of the present application; Figure 7 It is a control mainboard module composition structure schematic view of the present application.

[0017] In the diagram: 1. Belt body; 11. Positioning clip; 12. Scale line; 2. Tightening measurement assembly; 21. Housing; 22. Indicator light; 23. Power button; 24. Start button; 25. Display screen; 26. Recycle slot; 27. Measurement slot; 28. Socket; 3. Electrode patch assembly; 31. Electrode substrate; 32. Annular electrode sheet; 33. Patch pressure sensor; 34. Signal line; 35. Socket connector; 4. Battery; 5. Control main board; 6. Clamping roller; 7. Belt winding assembly; 71. Limit plate; 72. Winding shaft; 73. Winding motor. Detailed Implementation

[0018] 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. Example

[0019] like Figures 1 to 6 As shown, an adaptive waist circumference measurement and visceral fat warning belt includes a belt body 1 and a tightening measurement component 2. One end of the belt body 1 is rolled up inside the tightening measurement component 2. The tightening measurement component 2 is signal-connected to an electrode patch component 3. The electrode patch component 3 includes a pair of excitation electrode patches and a pair of detection electrode patches. A patch pressure sensor 33 is set in the center of the electrode patch component 3. When the belt body 1 is rolled up inside the tightening measurement component 2, the length can be automatically adjusted to adapt to users of different body types. The configuration and use of the excitation electrode patches and detection electrode patches of the electrode patch component 3 can improve the accuracy of bioelectrical impedance measurement. The patch pressure sensor 33 can ensure that the electrodes maintain good contact with the skin, and at the same time, it can ensure that when the tightening measurement component 2 tightens the belt body 1, the degree of tightening of the belt body 1 can be reflected by the pressure value of the patch pressure sensor 33, ensuring that the belt body 1 is rolled up in place, that is, accurate waist circumference measurement value can be obtained. The tightening and measuring assembly 2 comprises a shell 21, a waistband winding assembly 7 is arranged in the shell 21, the waistband body 1 is arranged in the shell 21, the belt body of the waistband body 1 is wound on the waistband winding assembly 7, a battery 4 and a control mainboard 5 are further arranged in the shell 21, the battery 4 is electrically connected with each electrical element of the waistband, the control mainboard 5 is signal connected with each electrical element of the waistband, the shell 21 provides structural protection and support for the whole tightening and measuring assembly 2; the waistband winding assembly 7 is responsible for automatic unwinding and winding of the waistband; the battery 4 provides independent power supply for all electrical elements, ensuring the portability of the equipment; and the control mainboard 5 coordinates all processes such as winding, measuring, data analysis through signal connection, ensuring that the waistband can perform adaptive and autonomous measurement, solving the technical problems of traditional measurement methods such as complicated operation, large error and inability to perform visceral fat early warning. Embodiment

[0020] In addition to including all the technical features in Embodiment One, the present embodiment further includes: The other end of the waistband body 1 is fixedly connected with a positioning clamping strip 11, and the belt body of the waistband body 1 is provided with a scale line 12. The positioning clamping strip 11 provides a clear and reliable mechanical fixing point for the waistband, so that the user can quickly and accurately connect and lock the movable end and the fixed end of the waistband when wearing. The scale line 12 provides an intuitive visual length reference for the user, facilitating quick waist circumference estimation and recording. On the other hand, the scale line 12 also serves as an internal calibration reference, playing a double protection role.

[0021] A recycling clamping groove 26 is formed in one side of the shell body of the shell 21, and the positioning clamping strip 11 in the winding and unwinding state is arranged in the recycling clamping groove 26. A measuring clamping groove 27 is formed in the other side of the shell body of the shell 21, and the positioning clamping strip 11 in the measuring state is movably clamped in the measuring clamping groove 27. The recycling clamping groove 26 is specially used to stably arrange the positioning clamping strip 11 in the winding and unwinding state during the non-use period, ensuring the neat storage of the waistband and avoiding component loss or damage. The measuring clamping groove 27 is used to movably clamp the positioning clamping strip 11 in the measuring state during the measuring process, which not only ensures the stable fixation of the positioning clamping strip 11 during the measuring process, but also facilitates the quick disassembly after the measuring process.

[0022] The front face of the housing 21 is connected to an indicator light 22, a power button 23, a start button 24, and a display screen 25. The power button 23, indicator light 22, and start button 24 are arranged side-by-side at the bottom of the front face of the housing 21, while the display screen 25 is located in the middle of the front face of the housing 21. This side-by-side arrangement of the power button 23, indicator light 22, and start button 24 at the bottom of the front face of the housing 21 is ergonomic, allowing the user to easily reach and operate these key controls with their thumb when holding the device with one hand. At the same time, placing the display screen 25 in the middle of the housing ensures that the information is displayed clearly and is easy to read, facilitating the user to quickly obtain measurement data. Example

[0023] In addition to all the technical features included in Embodiment 1, this embodiment also includes: The electrode patch assembly 3 also includes an electrode substrate 31 and an annular electrode sheet 32. The annular electrode sheet 32 ​​and the patch pressure sensor 33 are both connected to the side of the electrode substrate 31 that is attached to the human skin. The electrode substrate 31 serves as the basic support structure of the entire assembly, providing a stable mounting platform for other components. The annular electrode sheet 32 ​​helps to optimize the contact area and current distribution with the skin, thereby collecting bioelectrical impedance signals more accurately and stably. The patch pressure sensor 33 is integrated in the center of the electrode patch assembly 3 and can monitor the contact pressure between the waist belt body 1 and the skin, thus ensuring that the tightness of the waist belt body 1 remains consistent.

[0024] Both the annular electrode 32 and the patch pressure sensor 33 are connected to signal lines 34. The other end of the signal line 34 is connected to a connector 35. The upper end of the front face of the housing 21 is connected to a socket 28 that is connected to the control main board 5. The connector 35 and the socket 28 are aligned and connected. The alignment and connection of the connector 35 and the socket 28 realizes the electrical connection between the electrode patch assembly 3 and the main equipment, and facilitates quick connection before use, as well as disassembly and storage after use.

[0025] Each electrode patch of the electrode patch assembly 3 is placed inside the waist belt body 1. The excitation electrode patch of the electrode patch assembly 3 is placed near the spine in front and behind the abdomen, respectively. The detection electrode patch of the electrode patch assembly 3 is placed on both sides of the waist. The front and back positions of the excitation electrode patch can establish an excitation current path through the core area of ​​the abdominal cavity. The detection electrode patch is placed on the left and right sides of the waist to measure the voltage drop along this path. This allows the measuring current to flow through the abdominal cavity area rich in visceral fat to the maximum extent, thereby making the measured impedance value more sensitive to changes in visceral fat.

[0026] Inside the outer casing 21, two clamping rollers 6 are rotatably connected. The two clamping rollers 6 clamp the two sides of the waist belt body 1 respectively, and the clamping rollers 6 integrate angle sensors. When the waist belt body 1 is pulled out or retracted by the winding motor 73, the two clamping rollers 6 can constrain and guide the belt body to ensure that the waist belt body 1 always moves along the preset straight path, effectively preventing the waist belt from shifting laterally, twisting or wrinkling during the movement. At the same time, when the waist belt body 1 is pulled out or retracted, it will drive the clamping rollers 6 to rotate accordingly. At this time, the integrated angle sensor can accurately capture this rotation angle change, accurately measure the extension length of the waist belt under the stable pressure through the angle sensor, and finally output an accurate waist circumference value.

[0027] The waist belt winding assembly 7 includes a limiting plate 71, a winding shaft 72, and a winding motor 73. The body of the winding motor 73 is fixedly connected to the bottom of the housing 21. The motor shaft of the winding motor 73 is fixedly connected to the winding shaft 72 along the same axis. The upper end of the winding shaft 72 is rotatably connected to the top of the housing 21. The limiting plate 71 is fixedly connected to the shaft of the winding shaft 72 and clamps the waist belt body 1 wound around the shaft of the winding shaft 72. The winding motor 73 provides a stable driving foundation as a power source. The upper end of the winding shaft 72 is rotatably connected to the top of the housing 21, forming a stable rotational support structure. The limiting plate 71 plays an axial restraint role, which can effectively prevent the waist belt from sliding axially or accumulating and disordering on the winding shaft 72 due to inertia during high-speed winding or unwinding. Example

[0028] like Figure 7 As shown, in addition to all the technical features included in Embodiment 1, this embodiment also includes: Control motherboard 5 includes, but is not limited to, the following modules: The main controller module executes the firmware program stored in the memory, coordinates and schedules all other functional modules, and performs data aggregation, logical judgment and instruction distribution. The data storage module, connected to the main controller module, is used to store system firmware, visceral fat estimation algorithm model, user personal physiological parameters such as age, gender, height, historical measurement data, and system configuration parameters. The motor drive module is connected to the main controller module and the winding motor 73 in the waist belt winding assembly 7. It receives instructions from the main controller and outputs precise pulse width modulation signals to control the forward rotation, reverse rotation, stop and rotation speed of the winding motor, thereby realizing the automatic tightening and retraction of the waist belt. The bioelectrical impedance measurement module is connected to the main controller module and the electrode patch assembly 3. It generates a safe, weak, specific frequency AC excitation signal, such as 50kHz, and injects it into the human body through the excitation electrode patch. The voltage drop signal after passing through human tissue is measured by the detection electrode patch. The measured voltage signal is amplified, filtered, and converted from analog to digital to finally calculate the bioelectrical impedance value of the human body and transmit it to the main controller module. The length calculation module is connected to the main controller module to calculate the waist length in real time. By reading the signal of the angle sensor connected to the clamping roller 6, it accurately obtains the rotation angle of the clamping roller 6, and then calculates the precise extension length of the waist belt based on the circumference. The early warning and analysis module, integrated within the main controller module, receives real-time waist circumference data from the length calculation module and bioelectrical impedance data from the bioelectrical impedance measurement module. It runs a pre-stored visceral fat estimation model, using waist circumference, bioelectrical impedance, user age, and gender as input features to estimate the user's visceral fat area. The estimated visceral fat area is compared with a preset clinical risk threshold to generate risk warning signals of different levels. Based on the warning results and body composition data, personalized nutritional intervention recommendations are generated, such as suggesting the consumption of a specific type, concentration, and amount of nutritional powder. The communication module, connected to the main controller module, is used to interact with external devices for data exchange. For example, the Bluetooth module can be used to send measurement results, early warning information and nutritional advice to the user's smartphone APP or the doctor's computer terminal to realize remote monitoring and management of data. The power management module, connected to the battery 4, is responsible for providing stable power at different voltage levels to the entire control motherboard 5 and various peripherals.

[0029] Working principle: When the user wears the belt, the belt body 1 is wrapped around the waist and the end with the fixed positioning strip 11 is inserted into the measuring slot 27 to complete the initial fixation. Then the user presses the start button 24. After receiving the instruction, the control motherboard 5 controls the winding motor 73 to start running through the motor drive module. The winding motor 73 drives the winding shaft 72 to rotate, thereby gradually pulling the belt body 1 out of the outer shell 21 to realize the automatic tightening process. During this process, the patch pressure sensor 33, located at the center of the electrode patch assembly 3, continuously monitors the contact pressure between the waist belt and the human skin and feeds the pressure data back to the control motherboard 5 in real time. When the pressure value reaches the preset optimal measurement threshold, the main controller module will command the winding motor 73 to stop running. At this time, the waist belt body 1 is in a standardized tightening state, ensuring the consistency of each measurement condition. The movement of the waist belt body 1 drives the two clamping rollers 6 to rotate. An angle sensor integrated on the clamping rollers 6 accurately captures the change in rotation angle. The length calculation module calculates the specific extension length of the waist belt based on the rotation angle and the circumference of the rollers. Combined with the inherent length of the waist belt's fixed part, an accurate waist circumference measurement value can be obtained. While maintaining a stable tightened state, the bioelectrical impedance measurement module starts working. It injects a safe and weak AC signal of a specific frequency into the human abdomen through the excitation electrode patch in the electrode patch assembly 3. After the current passes through the abdominal tissue, the detection electrode patch detects the corresponding voltage drop signal. After signal amplification, filtering, and analog-to-digital conversion, the bioelectrical impedance measurement module calculates the human body's bioelectrical impedance value and transmits it to the main controller module. Subsequently, the early warning and analysis module starts running. It calls the visceral fat estimation algorithm model stored in the data storage module and uses the real-time measured waist circumference data, bioelectrical impedance value, and physiological parameters such as age and gender pre-entered by the user as input features for comprehensive analysis and calculation. Finally, it estimates the user's visceral fat area. The early warning and analysis module compares this estimated value with the preset clinical risk threshold, generates different levels of risk warning signals according to the degree of exceedance, and displays the measurement results and warning information intuitively on the display screen 25. The indicator light 22 will also emit corresponding light signals to prompt. In addition, the module can generate personalized nutritional intervention suggestions based on specific body composition data and risk assessment results. Finally, the communication module can send complete measurement data, warning conclusions and nutritional suggestions to the user's smartphone or the doctor's computer terminal for long-term health tracking and professional medical guidance.

[0030] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An adaptive waist circumference measurement and visceral fat warning belt, comprising a belt body (1) and a tightening measurement component (2), characterized in that: One end of the waist belt body (1) is wound inside the tightening measurement component (2). The tightening measurement component (2) is signal connected to the electrode patch component (3). The electrode patch component (3) includes a pair of excitation electrode patches and a pair of detection electrode patches. A patch pressure sensor (33) is provided at the center of the electrode patch component (3). The tightening measuring component (2) includes a housing (21), inside which a belt winding component (7) is provided. The belt body (1) located inside the housing (21) is wound around the belt winding component (7). Inside the housing (21), a battery (4) and a control board (5) are also provided. The battery (4) is electrically connected to each electrical component of the belt, and the control board (5) is signal connected to each electrical component of the belt.

2. The adaptive waist circumference measurement and visceral fat early warning belt according to claim 1, characterized in that: The other end of the belt body (1) is fixedly connected to a positioning strip (11), and the belt body (1) is provided with scale lines (12).

3. The adaptive waist circumference measurement and visceral fat early warning belt according to claim 2, characterized in that: The outer shell (21) has a recycling slot (26) on one side and a positioning strip (11) in the recycling slot (26) is placed in the recycling slot (26). The outer shell (21) has a measuring slot (27) on the other side and a positioning strip (11) in the measuring slot (27) is movably held in the measuring slot (27).

4. The adaptive waist circumference measurement and visceral fat warning belt according to claim 1, characterized in that: The front end of the outer casing (21) is connected to an indicator light (22), a power button (23), a start button (24), and a display screen (25). The power button (23), indicator light (22), and start button (24) are arranged side by side at the bottom of the front end of the outer casing (21), and the display screen (25) is located in the middle of the front end of the outer casing (21).

5. The adaptive waist circumference measurement and visceral fat early warning belt according to claim 1, characterized in that: The electrode patch assembly (3) further includes an electrode substrate (31) and an annular electrode sheet (32), wherein the annular electrode sheet (32) and the patch pressure sensor (33) are both connected to the electrode substrate (31) and are attached to one side of the human skin.

6. The adaptive waist circumference measurement and visceral fat early warning belt according to claim 5, characterized in that: The annular electrode sheet (32) and the patch pressure sensor (33) are both connected to signal lines (34). The other end of the signal line (34) is connected to a connector (35). The upper end of the front face of the housing (21) is connected to a socket (28) that is connected to the control motherboard (5). The connector (35) and the socket (28) are aligned and connected.

7. The adaptive waist circumference measurement and visceral fat warning belt according to claim 1, characterized in that: The electrode patches of the electrode patch assembly (3) are all placed inside the waist belt body (1), and the excitation electrode patches of the electrode patch assembly (3) are respectively placed near the spine in front and behind the abdomen of the human body, and the detection electrode patches of the electrode patch assembly (3) are respectively placed on both sides of the waist.

8. The adaptive waist circumference measurement and visceral fat early warning belt according to claim 1, characterized in that: The outer shell (21) is also rotatably connected to two clamping rollers (6), which are respectively clamped on both sides of the belt body (1), and the clamping rollers (6) are integrated with angle sensors.

9. The adaptive waist circumference measurement and visceral fat early warning belt according to claim 8, characterized in that: The belt winding assembly (7) includes a limiting plate (71), a winding shaft (72), and a winding motor (73). The body of the winding motor (73) is fixedly connected to the bottom of the shell of the outer casing (21). The motor shaft of the winding motor (73) is fixedly connected to the winding shaft (72) along the same axis. The upper end of the winding shaft (72) is rotatably connected to the top of the shell of the outer casing (21). The limiting plate (71) is fixedly connected to the shaft of the winding shaft (72), and the limiting plate (71) is clamped on the upper and lower sides of the belt body (1) wound around the shaft of the winding shaft (72).

10. The adaptive waist circumference measurement and visceral fat early warning belt according to claim 9, characterized in that: The control motherboard (5) includes, but is not limited to, the following modules: The main controller module executes the firmware program stored in the memory, coordinates and schedules all other functional modules, and performs data aggregation, logical judgment and instruction distribution. The data storage module, connected to the main controller module, is used to store system firmware, visceral fat estimation algorithm model, user's personal physiological parameters, historical measurement data, and system configuration parameters. The motor drive module is connected to the main controller module and the winding motor (73) in the waist belt winding assembly (7) to receive instructions from the main controller and output precise pulse width modulation signals to control the forward rotation, reverse rotation, stop and rotation speed of the winding motor, thereby realizing the automatic tightening and retraction of the waist belt. The bioelectrical impedance measurement module is connected to the main controller module and the electrode patch assembly (3) to generate a safe, weak, specific frequency AC excitation signal, which is injected into the human body through the excitation electrode patch. The voltage drop signal after passing through human tissue is measured by the detection electrode patch. The measured voltage signal is amplified, filtered and converted from analog to digital, and finally the bioelectrical impedance value of the human body is calculated and transmitted to the main controller module. The length calculation module is connected to the main controller module to calculate the waist length in real time. By reading the signal of the angle sensor connected to the clamping roller (6), the rotation angle of the clamping roller (6) is accurately obtained, and the precise extension length of the waist belt is calculated based on the circumference. The early warning and analysis module, integrated within the main controller module, receives real-time waist circumference data from the length calculation module and bioelectrical impedance data from the bioelectrical impedance measurement module; runs a pre-stored visceral fat estimation model, using waist circumference, bioelectrical impedance, user age, gender, etc., as input features to estimate the user's visceral fat area; compares the estimated visceral fat area with a preset clinical risk threshold to generate risk warning signals of different levels. Based on the early warning results and body composition data, personalized nutritional intervention recommendations are generated; The communication module, connected to the main controller module, is used for data interaction with external devices; The power management module is connected to the battery (4) and is responsible for providing stable power at different voltage levels to the entire control motherboard (5) and various peripherals.

Images