Intelligent fitness bracelet

Abstract

The invention provides an intelligent body-building sports bracelet, which belongs to the technical field of body-building bracelets, and comprises a control module, a body-building action posture module, a heart rate acquisition module, a charging module and a Bluetooth communication module, the fitness action posture module, the heart rate acquisition module, the charging module and the Bluetooth communication module are respectively connected with the control module, and the control module communicates with a mobile terminal through the Bluetooth communication module; the exercise action of a body builder is detected through the body building action posture module, heart rate data of the body builder in the exercise process are collected through the heart rate sensor, the data are calculated and analyzed through the control module, and comprehensive data are transmitted to the mobile terminal through the Bluetooth communication module to be visually displayed, so that the scientific guidance functions such as diet nursing recommendation are completed.

Description

Technical Field

[0001] This invention belongs to the field of fitness bracelet technology and relates to a smart fitness bracelet. Background Technology

[0002] Currently, although smart bracelets have become a very popular wearable device on the market, their main functions are generally limited, and there are no bracelets specifically designed for scientific fitness, either domestically or internationally. In contemporary society, fitness is an emerging industry, and many people realize that it is a highly profitable investment, thus many have joined the ranks of fitness enthusiasts. However, it's important to understand that fitness is also a complex subject, requiring scientific guidance to achieve the desired results; otherwise, it can only lead to physical harm and a waste of time and energy. While there are many theoretical methods for fitness, they are not necessarily suitable for everyone. Although gyms and fitness instructors are readily available, they require a significant financial investment, which not everyone can afford. Summary of the Invention

[0003] To address the technical problems existing in the background art, the present invention provides a smart fitness tracker, which includes a control module, a fitness posture module, a heart rate acquisition module, a charging module, and a Bluetooth communication module. The fitness posture module, heart rate acquisition module, charging module, and Bluetooth communication module are respectively connected to the control module, and the control module communicates with a mobile terminal through the Bluetooth communication module.

[0004] Furthermore, the fitness movement posture module includes an information acquisition module, which collects various monitoring parameters, including wrist posture monitoring parameters, foot landing posture monitoring parameters, fitness equipment usage posture monitoring parameters, and overall fitness movement posture matching monitoring parameters. Wrist posture monitoring parameters include twisting angle, twisting angular velocity, duration of wrist twisting exceeding the safety threshold, wrist twisting monitoring cycle, and number of wrist twists. Foot landing posture monitoring parameters include the maximum impact force of the left and right feet landing, the landing angle of the left and right feet, and the landing speed of the left and right feet. Fitness equipment usage posture monitoring parameters include grip angle, range of motion completed on the fitness equipment, speed of motion completed on the fitness equipment, and the movement trajectory of the fitness equipment. Overall fitness movement posture matching monitoring parameters include a fitness movement posture matching safety feature dataset and fitness movement posture feature data.

[0005] Furthermore, the heart rate acquisition module uses a heart rate sensor chip circuit, including a red light-emitting diode and a light-receiving window. The light emitted by the red light-emitting diode shines on the light-receiving window through the skin surface. When the blood flow on the skin surface changes with the heartbeat, the light from the red light-emitting diode that reaches the light-receiving window through the skin surface also changes accordingly. This causes the photocurrent to fluctuate, thereby acquiring the heart pulse signal.

[0006] Furthermore, the fluctuating voltage signal output from the heart rate sensor chip pins is amplified by the inverting input of an amplifier. To prevent interference signals from reaching the input, a bipolar coupling capacitor is used to isolate the interference signal. A low-pass RC filter with capacitors and resistors removes high-frequency signals with a cutoff frequency of 3.33Hz. The signal is then converted into a square wave signal by a voltage comparator and input to the control module. The reference voltage of the voltage comparator is adjusted by a potentiometer to eliminate differences in skin texture among different individuals.

[0007] Furthermore, the charging module is preferably implemented by a charging control chip, which has: an external power input pin connected to the charging protection module; a battery pin connected to the battery; and a system output pin connected to the main chip of the smart bracelet; when the charging interface module is connected to an external power source, the charging control chip switches between conducting the external power input pin and the battery pin, and switches between conducting the power input pin and the system output pin; when the charging interface module is not connected to an external power source, the charging control chip switches between conducting the battery pin and the system output pin.

[0008] Furthermore, the Bluetooth communication module includes an electrically connected Bluetooth chip U8, a crystal oscillator module, an antenna module, an audio input / output module, an external storage module, and a reset circuit. The Bluetooth chip U8 is model CSR8610. The Bluetooth chip U8 is used to process voice data, the crystal oscillator module is used to provide the oscillation frequency for the Bluetooth chip U8, the antenna module is used to complete data transmission with the mobile phone, and the audio input / output module includes a microphone and a speaker. The microphone is used to receive user voice information, process it through the Bluetooth chip U8, and transmit it to the mobile phone. The speaker is used to play the voice data processed by the Bluetooth chip U8 from the mobile phone.

[0009] The beneficial effects of this invention are: This invention provides a smart fitness tracker, characterized in that it includes a control module, a fitness posture module, a heart rate acquisition module, a charging module, and a Bluetooth communication module. The fitness posture module, heart rate acquisition module, charging module, and Bluetooth communication module are all connected to the control module. The control module communicates with a mobile terminal via the Bluetooth communication module. It provides scientific guidance and suggestions for the daily exercise activities of fitness enthusiasts. The fitness posture module detects the user's movements, and the heart rate sensor collects heart rate data during exercise. The control module calculates and analyzes the data, and the comprehensive data is transmitted to the mobile terminal for intuitive presentation via the Bluetooth communication module, thus providing scientific guidance functions such as dietary recommendations.

[0010] The fitness movement recognition method of this invention uses a peak-valley detection algorithm to calculate peak and valley values, determine whether the difference between peaks and valleys is within a set threshold range, and determine whether the time difference between peaks and valleys is within a time window. The threshold range for determining whether the difference between peaks and valleys is within the set threshold range is obtained through multiple sets of experiments testing different fitness movements and finally analyzing and calculating. When the peak-valley difference value collected by the six-axis sensor meets the threshold, it means that the exerciser's movement amplitude has reached the standard requirement. The determination of whether the time difference between peaks and valleys is within the time window is obtained by statistically analyzing the completion time of fitness movements of different speeds of the tester and calculating the time range for completing the standard movement.

[0011] Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0012] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0013] Figure 1 This is a structural diagram of the MIMSFE model of the present invention. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in these embodiments have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0016] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0017] In this invention, terms such as "upper," "lower," "left," "right," "front," "back," "vertical," "horizontal," "side," and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only to facilitate the description of the structural relationships of the various components or elements of this invention and do not specifically refer to any component or element in this invention. They should not be construed as limiting the invention.

[0018] In this invention, terms such as "fixed connection," "connected," and "linked" should be interpreted broadly, indicating a fixed connection, an integral connection, or a detachable connection; a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can determine the specific meaning of these terms in this invention based on the specific circumstances, and they should not be construed as limitations on the invention.

[0019] Example 1, as Figure 1 As shown in the figure, this embodiment provides a smart fitness tracker, which includes a control module, a fitness posture module, a heart rate acquisition module, a charging module, and a Bluetooth communication module. The fitness posture module, heart rate acquisition module, charging module, and Bluetooth communication module are respectively connected to the control module, and the control module communicates with the mobile terminal through the Bluetooth communication module.

[0020] The fitness movement posture module includes an information acquisition module, which collects various monitoring parameters, including wrist posture monitoring parameters, foot landing posture monitoring parameters, fitness equipment usage posture monitoring parameters, and overall fitness movement posture matching monitoring parameters. Wrist posture monitoring parameters include twisting angle, twisting angular velocity, duration of wrist twisting exceeding the safety threshold, wrist twisting monitoring cycle, and number of wrist twists. Foot landing posture monitoring parameters include the maximum impact force of each foot landing, the landing angle of each foot, and the landing speed of each foot. Fitness equipment usage posture monitoring parameters include grip angle, range of motion performed on the fitness equipment, speed of motion performed on the fitness equipment, and the trajectory of the movement on the fitness equipment. Overall fitness movement posture matching monitoring parameters include a fitness movement posture matching safety feature dataset and fitness movement posture feature data.

[0021] The fitness movement posture data analysis module analyzes the various monitoring parameters obtained from the data acquisition module to obtain various early warning indicators for fitness movement safety, and transmits these indicators to the fitness movement posture safety early warning module. The fitness movement posture data analysis module includes a wrist posture monitoring unit, a foot landing posture monitoring unit, a fitness equipment usage posture monitoring unit, and an overall fitness movement posture matching monitoring unit. Obtaining the various early warning indicators for fitness movement safety includes the following steps: Specifically, in this embodiment, the wrist posture monitoring unit analyzes wrist posture monitoring parameters, the foot landing posture monitoring unit analyzes foot landing posture monitoring parameters, the fitness equipment usage posture monitoring unit analyzes fitness equipment usage posture monitoring parameters, and the overall fitness movement posture matching monitoring unit analyzes overall fitness movement posture matching monitoring parameters.

[0022] The heart rate acquisition module uses a heart rate sensor chip circuit, including a red LED and a light-receiving window. The light emitted by the red LED shines through the skin surface onto the light-receiving window. When the blood flow to the skin surface changes with the heartbeat, the amount of light reaching the light-receiving window through the skin surface also changes, causing a fluctuation in the photocurrent, thus acquiring the heart pulse signal. The heart rate sensor chip pins output fluctuating voltage signals, which are amplified by the inverting input of an amplifier. To prevent interference signals from reaching the input, a bipolar coupling capacitor is used to isolate the interference signals. A capacitor and resistor RC low-pass filter removes high-frequency signals, with a cutoff frequency of 3.33Hz. A voltage comparator converts the signal into a square wave signal, which is then input to the control module. A potentiometer adjusts the reference voltage of the voltage comparator to eliminate differences in skin texture among different individuals.

[0023] The charging module is preferably implemented by a charging control chip, which has: an external power input pin connected to the charging protection module; a battery pin connected to the battery; and a system output pin connected to the main chip of the smart bracelet. When the charging interface module is connected to an external power source, the charging control chip switches between conducting the external power input pin and the battery pin, and also switches between conducting the power input pin and the system output pin. When the charging interface module is not connected to an external power source, the charging control chip switches between conducting the battery pin and the system output pin.

[0024] The Bluetooth communication module includes a Bluetooth chip U8, a crystal oscillator module, an antenna module, an audio input / output module, an external storage module, and a reset circuit, all electrically connected. The Bluetooth chip U8 is model CSR8610. The Bluetooth chip U8 is used to process voice data, the crystal oscillator module is used to provide the oscillation frequency for the Bluetooth chip U8, the antenna module is used to complete the data transmission with the mobile phone, and the audio input / output module includes a microphone and a speaker. The microphone is used to receive the user's voice information, which is then processed by the Bluetooth chip U8 and transmitted to the mobile phone. The speaker is used to play out the voice data from the mobile phone processed by the Bluetooth chip U8. This invention aims to provide scientific guidance and suggestions for fitness enthusiasts' daily exercise activities. It uses a fitness posture module to detect the exerciser's movements and a heart rate sensor to collect heart rate data during exercise. The control module calculates and analyzes the data, and the comprehensive data is transmitted to a mobile terminal for intuitive presentation via Bluetooth communication, thus providing scientific guidance functions such as dietary recommendations.

[0025] The fitness movement recognition method of this invention uses a peak-valley detection algorithm to calculate peak and valley values, determine whether the difference between peaks and valleys is within a set threshold range, and determine whether the time difference between peaks and valleys is within a time window. The threshold range for determining whether the difference between peaks and valleys is within the set threshold range is obtained through multiple sets of experiments testing different fitness movements and finally analyzing and calculating. When the peak-valley difference value collected by the six-axis sensor meets the threshold, it means that the exerciser's movement amplitude has reached the standard requirement. The determination of whether the time difference between peaks and valleys is within the time window is obtained by statistically analyzing the completion time of fitness movements of different speeds of the tester and calculating the time range for completing the standard movement.

[0026] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A smart fitness tracker, characterized in that, The smart fitness tracker includes a control module, a fitness posture module, a heart rate acquisition module, a charging module, and a Bluetooth communication module. The fitness posture module, heart rate acquisition module, charging module, and Bluetooth communication module are all connected to the control module, and the control module communicates with the mobile terminal through the Bluetooth communication module.

2. The smart fitness tracker as described in claim 1, characterized in that, The fitness movement posture module includes an information acquisition module, which collects various monitoring parameters, including wrist posture monitoring parameters, foot landing posture monitoring parameters, fitness equipment usage posture monitoring parameters, and overall fitness movement posture matching monitoring parameters. Wrist posture monitoring parameters include twisting angle, twisting angular velocity, duration of wrist twisting exceeding the safety threshold, wrist twisting monitoring cycle, and number of wrist twists. Foot landing posture monitoring parameters include the maximum impact force of each foot landing, the landing angle of each foot, and the landing speed of each foot. Fitness equipment usage posture monitoring parameters include grip angle, range of motion performed on the fitness equipment, speed of motion performed on the fitness equipment, and the trajectory of the movement on the fitness equipment. Overall fitness movement posture matching monitoring parameters include a fitness movement posture matching safety feature dataset and fitness movement posture feature data.

3. The smart fitness tracker as described in claim 1, characterized in that, The heart rate acquisition module uses a heart rate sensor chip circuit, which includes a red light-emitting diode and a light-receiving window. The light emitted by the red light-emitting diode shines on the light-receiving window through the skin surface. When the blood flow on the skin surface changes with the heartbeat, the light from the red light-emitting diode that reaches the light-receiving window through the skin surface also changes accordingly. This causes the photocurrent to fluctuate, thereby acquiring the heart pulse signal.

4. The smart fitness tracker as described in claim 3, characterized in that, The heart rate sensor chip pins output fluctuating voltage signals, which are amplified by the inverting input of an amplifier. To prevent interference signals from reaching the input, a bipolar coupling capacitor is used to isolate the interference signals. A low-pass RC filter with capacitors and resistors removes high-frequency signals with a cutoff frequency of 3.33Hz. The signal is then converted into a square wave signal by a voltage comparator and input to the control module. The reference voltage of the voltage comparator is adjusted by a potentiometer to eliminate differences in skin texture among different individuals.

5. The smart fitness tracker as described in claim 1, characterized in that, The charging module is preferably implemented by a charging control chip, which has: an external power input pin, which is connected to the charging protection module; and a battery pin, which is connected to the battery. The system output pin is connected to the main chip of the smart bracelet. When the charging interface module is connected to an external power source, the charging control chip switches between conducting the external power input pin and the battery pin, and switches between conducting the power input pin and the system output pin. When the charging interface module is not connected to an external power source, the charging control chip switches between conducting the battery pin and the system output pin.

6. The smart fitness tracker as described in claim 1, characterized in that, The Bluetooth communication module includes an electrically connected Bluetooth chip U8, a crystal oscillator module, an antenna module, an audio input / output module, an external storage module, and a reset circuit. The Bluetooth chip U8 is model CSR8610. The Bluetooth chip U8 is used to process voice data, the crystal oscillator module is used to provide the oscillation frequency for the Bluetooth chip U8, the antenna module is used to complete data transmission with the mobile phone, and the audio input / output module includes a microphone and a speaker. The microphone is used to receive user voice information, process it through the Bluetooth chip U8, and transmit it to the mobile phone. The speaker is used to play the voice data processed by the Bluetooth chip U8 from the mobile phone.

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