Pulse state self-monitoring bracelet based on human body kinetic energy collection

Abstract

The invention discloses a pulse state self-monitoring bracelet based on human body kinetic energy collection, which comprises a dial plate, a watchband and a display, and further comprises an electromagnetic generator module, a friction nano generator module and an energy management circuit which are arranged in the dial plate, the electromagnetic generator module comprises a dial center shaft and a rolling bearing, the outer ring of the rolling bearing is sleeved with a magnet disc, the top of the magnet disc is connected with a pendulum bob through a pin, and a copper coil is embedded into a fixed clamping groove; the friction nanometer generator module is formed by rolling four PTFE small balls at intervals on a copper sheet, the copper sheet is laid on the outer ring of the inner dial plate, and the PTFE small balls are divided into four areas through baffles; the energy management circuit is located at the bottom of the dial and is responsible for controlling energy flow of the whole bracelet. According to the invention, the motion energy of the wrist of the wearer can be collected and converted into electric energy, so that continuous power supply can be provided for the smart watch when the smart watch is worn.

Description

Technical Field

[0001] The present invention belongs to the field of wearable devices, and particularly relates to a pulse state self-monitoring bracelet based on human kinetic energy collection. Background Art

[0002] In an extreme working environment such as a mine, it is particularly crucial to monitor the health of miners. The operating conditions in the mine are complex and variable, including high humidity, low light, and frequent mechanical vibrations. These factors pose many challenges to traditional battery-powered devices, such as short battery life, inconvenient charging, and potential safety risks. Most of the current health monitoring bracelets on the market rely on external power sources and are difficult to meet the needs of long-term operations in mines. Moreover, a single energy harvesting technology (such as solar or piezoelectric) is not very efficient in the mine environment. Given the high health risks faced by miners, such as abnormal heart rate, high body temperature, and exposure to harmful gases, real-time monitoring is particularly important. However, there is currently a lack of an integrated, self-powered, and self-monitoring solution. Therefore, developing a pulse state self-monitoring bracelet based on human kinetic energy collection is of great significance for improving the practicality and reliability of health monitoring devices for mine workers.

[0003] According to the search, there is currently less self-powered intelligent bracelet technology for monitoring the health of mine workers, but there are similar related research patents. For example, the "Underground Worker Safety Monitoring System" disclosed in Chinese Patent Application No. 2017109096234. The system includes a housing, and a microprocessor is provided inside the housing. A gas concentration sensor, an acoustic vibration sensor, a body temperature sensor, a digital pulse sensor, a wireless transceiver module, an audio processing module, an alarm, and a positioning module are provided on the microprocessor. This solution is set in the pocket watch of underground workers and can monitor the health of workers in real time, but it does not propose self-powered health monitoring and simply monitors by wirelessly transmitting signals.

[0004] In view of the above situation, it is necessary to develop a pulse state self-monitoring bracelet based on human kinetic energy collection. The bracelet is used to provide continuous power supply for monitoring the health of mine workers, so as to achieve long-term, stable, and external power source-free health monitoring of mine workers working under harsh conditions. Summary of the Invention

[0005] To solve the above problems, the present invention provides a pulse state self-monitoring bracelet based on human kinetic energy collection.

[0006] A pulse state self-monitoring bracelet based on human kinetic energy collection of the present invention includes a watch face, a watch band, and a display, and further includes an electromagnetic generator module, a triboelectric nanogenerator module, and an energy management circuit disposed inside the watch face.

[0007] The electromagnetic generator module includes a dial center shaft and rolling bearings. The rolling bearings are press-fitted and fastened to the upper and lower ends of the dial center shaft. The outer ring of the rolling bearing is connected to the inner hole of the magnet disk. Magnets are embedded in the magnet disk. The top of the magnet disk is connected to a pendulum through a pin. There is a copper coil around the magnet disk, and the copper coil is embedded and fixed in the copper coil slot.

[0008] The triboelectric nanogenerator module is made by four spaced PTFE balls rolling on a copper sheet. The copper sheet is laid on the outer ring of the inner dial, and the PTFE balls are separated into four areas by baffles.

[0009] The energy management circuit is located at the bottom of the dial and is responsible for controlling the energy flow of the entire smart bracelet.

[0010] Furthermore, the magnets are embedded in the magnet disk in the Halbach array arrangement.

[0011] Furthermore, the copper sheet and the PTFE balls improve the triboelectric output through optimized material selection and surface treatment.

[0012] Furthermore, it also includes a signal transmission module, which consists of a piezoelectric nanogenerator. The piezoelectric nanogenerator uses a PVDF piezoelectric sensor.

[0013] Furthermore, a microprocessor, a gas concentration sensor, an acoustic vibration sensor, a body temperature sensor, a digital pulse sensor, a wireless transceiver module, an audio processing module, an alarm, and a positioning module are provided inside the dial.

[0014] The present invention has the following advantages and technical effects compared with the prior art:

[0015] The present invention adopts an innovative hybrid mechanism, combining an electromagnetic generator and a triboelectric nanogenerator, to efficiently collect energy from the wrist swing of human movement. This hybrid method is more adaptable to the special environment of mines with insufficient light and frequent vibrations compared to relying solely on single energy harvesting technologies such as solar energy or piezoelectricity. It significantly improves the efficiency and reliability of energy harvesting, thereby extending the battery life of the smart bracelet and reducing the inconvenience and safety risks brought by charging or replacing the battery.

[0016] In the present invention, the magnet part of the electromagnetic generator is arranged in the Halbach array and embedded in the magnet disk, optimizing the magnetic flux and energy conversion efficiency. The copper sheet and the PTFE balls of the triboelectric nanogenerator are separated by baffles, enhancing the triboelectric effect. This structural design not only improves the energy conversion efficiency but also enhances the long-term stability and reliability of the device by reducing friction and improving durability.

[0017] The present invention improves the enhanced signal transmission ability. The piezoelectric nanogenerator used in the present invention adopts high-performance materials (PVDF piezoelectric sensors), improving the reliability and distance of signal transmission. In a complex environment such as a mine, reliable signal transmission is crucial for ensuring the accuracy and timeliness of monitoring data. The signal transmission module of the present invention can maintain stable data transmission in a harsh environment, improving the real-time performance and accuracy of health monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. is a schematic diagram of the overall structure of a self-monitoring bracelet for pulse status based on human kinetic energy collection according to the present invention.

[0019] Figure 2 FIG. is a cross-sectional view of a self-monitoring bracelet for pulse status based on human kinetic energy collection according to the present invention.

[0020] Figure 3 FIG. is a schematic diagram of the electromagnetic generator module of a self-monitoring bracelet for pulse status based on human kinetic energy collection according to the present invention.

[0021] Figure 4 FIG. is a schematic diagram of the triboelectric nanogenerator module of a self-monitoring bracelet for pulse status based on human kinetic energy collection according to the present invention.

[0022] Figure 5 FIG. is the overall exploded view of the present invention.

[0023] In the figure: 1, dial; 2, PTFE ball; 3, copper sheet; 4, baffle; 5, copper coil; 6, magnet disk; 7, magnet; 8, pendulum; 9, center axis of the dial; 10, rolling bearing; 11, PVDF piezoelectric sensor; 12, watch band; 13, display; 14, copper coil card slot; 15, PTFE ball lid. DETAILED DESCRIPTION OF THE INVENTION

[0024] The following further describes the present invention in detail with reference to the accompanying drawings and specific implementation methods.

[0025] A self-monitoring bracelet for pulse status based on human kinetic energy collection according to the present invention is as Figure 1 、 Figure 2 shown, including a dial 1, a watch band 12 and a display 13, and further including an electromagnetic generator module, a triboelectric nanogenerator module, an energy management circuit and a signal transmission module disposed in the dial 1.

[0026] The electromagnetic generator module is as Figure 3 、 Figure 5As shown in the figure, it is one of the core parts of the present invention. The electromagnetic generator module includes the dial center shaft 9 which is the central support component of the entire device. The rolling bearings 10 are press-fitted and fastened at the upper and lower ends of the dial center shaft 9. Through the setting of the rolling bearings 10, the friction during the movement is reduced, and the durability and energy conversion efficiency of the device are improved. The outer ring of the rolling bearing 10 is connected to the inner hole of the magnet disk 6. Magnets 7 are embedded in the magnet disk 6. The magnets 7 are embedded in the magnet disk 6 in the Halbach array arrangement to enhance the magnetic flux and energy conversion efficiency. The top of the magnet disk 6 is connected to the pendulum 8 by a pin link. There is a copper coil 5 around the magnet disk 6. The copper coil 5 is embedded and fixed in the copper coil slot 14. When the magnet disk 6 rotates, an induced current will be generated in the copper coil 5, thus realizing electromagnetic induction power generation.

[0027] As Figure 4 , Figure 5 shown in the figure, the triboelectric nanogenerator module is made by four spaced PTFE balls 2 rolling on the copper sheet 3. The copper sheet 3 is laid on the outer ring of the inner dial and serves as the electrode part of the triboelectric nanogenerator. The PTFE balls 2 are separated in four regions by the baffle 4. The four spaced PTFE balls 2 roll on the copper sheet 3. By optimizing the material selection and surface treatment, the triboelectric output is improved.

[0028] The energy management circuit is located at the bottom of the dial 1 and is responsible for controlling the energy flow of the entire smart bracelet. Its main functions include: energy collection and conversion, energy storage, and energy distribution. By collecting and converting the electrical energy generated by the electromagnetic generator and the triboelectric nanogenerator, a stable output of electrical energy is ensured. Secondly, the collected electrical energy is stored in the energy storage unit for use by other functional modules of the smart watch. According to the needs of the smart watch, the electrical energy is reasonably distributed to ensure the normal operation of each functional module.

[0029] The signal transmission module is composed of a piezoelectric nanogenerator. The piezoelectric nanogenerator uses a PVDF piezoelectric sensor 11 to improve the reliability and distance of signal transmission. Its main functions include health monitoring signal transmission and environmental monitoring signal transmission. In the health monitoring signal transmission, the health monitoring data such as the heart rate, body temperature, and pulse of the mine workers are transmitted to the external device on the display 13 through the piezoelectric nanogenerator, while in the environmental monitoring signal transmission, the environmental monitoring data such as the gas concentration and acoustic vibration are transmitted to the external device to ensure the safety of the mine workers.

[0030] Inside the dial 1, there are a microprocessor, a gas concentration sensor, an acoustic vibration sensor, a body temperature sensor, a digital pulse sensor, a wireless transceiver module, an audio processing module, an alarm, and a positioning module.

[0031] Working principle:

[0032] When the wearer's wrist moves, the pendulum 8 swings with the wrist, driving the magnet disk 6 to rotate, generating an induced current in the copper coil 5 to achieve electromagnetic power generation. At the same time, the PTFE ball 2 rolls on the copper sheet 3 to generate frictional electrical energy. These two kinds of energy are collected, converted and stored through the energy management circuit to provide continuous power supply for the smart watch. In addition, the signal transmission module wirelessly transmits the health monitoring and environmental monitoring data to the display 13 and external devices to achieve real-time monitoring of the health and environmental conditions of the mine workers.

[0033] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention.

[0034] The embodiments described above are only for describing the preferred mode of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A pulse state self - monitoring bracelet based on human body kinetic energy collection, comprising a watch face (1), a watch band (12) and a display (13), characterized in that, It also includes an electromagnetic generator module, a triboelectric nanogenerator module, and an energy management circuit placed inside the watch dial (1); The electromagnetic generator module includes a watch dial central axis (9) and a rolling bearing (10). The rolling bearing (10) is fastened to the upper and lower ends of the watch dial central axis (9) by interference fit. The outer ring of the rolling bearing (10) is connected to the inner hole of the magnet disk (6). Magnets (7) are embedded in the magnet disk (6). The top of the magnet disk (6) is connected to the pendulum (8) by a pin. There is a copper coil (5) around the magnet disk (6), and the copper coil (5) is embedded and fixed in the copper coil slot (14); The triboelectric nanogenerator module is made by four spaced PTFE balls (2) rolling on a copper sheet (3). The copper sheet (3) is laid on the outer ring of the inner watch dial, and the PTFE balls (2) are separated into four areas by baffles (4); The energy management circuit is located at the bottom of the watch dial (1) and is responsible for controlling the energy flow of the entire bracelet.

2. The self - monitoring wristband for pulse state based on human body kinetic energy collection according to claim 1, wherein, The magnets (7) are embedded in the magnet disk (6) in the Halbach array arrangement.

3. The self - monitoring bracelet for pulse state based on human body kinetic energy collection according to claim 1, wherein, The copper sheet (3) and the PTFE balls (2) improve the triboelectric output by optimizing material selection and surface treatment.

4. The self - monitoring wristband for pulse state based on human body kinetic energy collection according to claim 1, characterized in that, It also includes a signal transmission module composed of a piezoelectric nanogenerator, and the piezoelectric nanogenerator uses a PVDF piezoelectric sensor (11).

5. The self - monitoring bracelet for pulse state based on human body kinetic energy collection according to claim 1, characterized in that, The watch dial (1) is internally provided with a microprocessor, a gas concentration sensor, a sound wave vibration sensor, a body temperature sensor, a digital pulse sensor, a wireless transceiver module, an audio processing module, an alarm, and a positioning module.

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