Magnetic levitation flywheel road energy harvester and its application in self-powered body temperature monitoring

Abstract

The present invention discloses a magnetic levitation flywheel pavement energy harvester, which is installed on a foundation and includes a pressure plate and a power generation unit. Several power generation units are linearly arrayed below the pressure plate. The power generation unit includes a lifting plate assembly and a sealed vacuum chamber. The sealed vacuum chamber is provided with a drive assembly, a transmission gear set, and a magnetic levitation flywheel electromagnetic power generation unit from top to bottom. Driven by the drive module, the transmission gear set drives the magnetic levitation flywheel electromagnetic power generation unit to generate electricity. The present invention combines flywheel energy storage technology to construct a vacuum magnetic levitation flywheel rotor system, which increases the operating speed and time of the magnetic levitation flywheel and improves the energy density of the energy harvester.

Description

Technical Field

[0001] The present invention relates to the technical field of road surface energy harvesting, and in particular to a magnetic levitation flywheel road surface energy harvester and its application in self-powered body temperature monitoring. Background Art

[0002] As society continues to develop, higher demands are being placed on operational efficiency, service quality, and other aspects of transportation systems. Consequently, intelligent transportation systems have emerged. However, a major challenge facing the construction of these systems is how to power the numerous small electromechanical systems they operate.

[0003] Currently, small electromechanical systems in smart transportation are primarily powered by the grid, solar power, and small wind turbines. While grid power offers high stability, it can cause significant damage to road surfaces and is expensive to install. Solar and wind power, on the other hand, are unstable and expensive. It's worth noting that the mechanical energy generated by pedestrians walking on the road is enormous, offering promising potential for utilization.

[0004] Currently, most road energy harvesters are still in the experimental research stage, primarily using piezoelectric and electromagnetic power generation methods. However, piezoelectric methods suffer from low energy conversion efficiency, low energy density, unstable converted power, and complex processing. While electromagnetic methods offer high energy conversion efficiency, they also suffer from low energy density, poor robustness, complex transmission structures, and high mechanical losses during transmission.

[0005] On the other hand, with the advent of the pandemic, pedestrian temperature monitoring has become the norm, and various temperature monitoring systems have been installed along roadsides. However, the high cost of energy supply in remote areas has limited the widespread use of temperature monitoring systems, which has a significant negative impact on epidemic prevention and control. Therefore, it is necessary to design a self-powered temperature monitoring system, deploying several energy-capturing systems alongside the temperature monitoring system to ensure immediate use. Summary of the Invention

[0006] In order to solve the above-mentioned shortcomings, the present invention provides a magnetic levitation flywheel pavement energy harvester and its application in self-powered body temperature monitoring, which has the advantages of high energy density, high robustness, high transmission efficiency, and free energy storage.

[0007] The technical solution of the present invention to solve the above technical problems is: a magnetic levitation flywheel pavement energy harvester, the magnetic levitation flywheel pavement energy harvester is installed on the foundation, the magnetic levitation flywheel pavement energy harvester includes a stepping plate and a power generation unit, a plurality of the power generation units are linearly arrayed under the stepping plate, the power generation unit includes a lifting plate assembly and a sealed vacuum chamber, the sealed vacuum chamber is provided with a drive assembly, a transmission gear set and a magnetic levitation flywheel electromagnetic power generation group from top to bottom, and the transmission gear set drives the magnetic levitation flywheel electromagnetic power generation group to generate electricity under the drive of the drive module.

[0008] The above-mentioned magnetic levitation flywheel pavement energy harvester, the lifting plate assembly includes a mounting plate, a first permanent magnet, a first guide column, and a first return spring. The first permanent magnet is installed at the symmetrical center position of the square mounting plate, and four first guide columns are distributed in a square shape on the lower surface of the mounting plate. A first return spring is mounted on each of the first guide columns.

[0009] In the above-mentioned magnetic levitation flywheel road surface energy harvester, the outside of the sealed vacuum chamber is a sealed shell, and the edge portion of the sealed shell is provided with four first guide holes, which respectively correspond to the four first guide pillars.

[0010] The above-mentioned magnetic levitation flywheel pavement energy capturer, the driving assembly includes a magnetic coupling stress plate, a second permanent magnet, a driving screw, a second guide column and a second return spring. The second permanent magnet repels the first permanent magnet and is installed on the central part of the upper surface of the magnetic coupling stress plate. The driving screw is vertically installed at the center position of the lower surface of the magnetic coupling stress plate. An upper plate is horizontally arranged on the upper part of the closed shell, and the upper plate is fixed on the inner wall of the closed shell. The upper plate is square and has four second guide holes. Four second guide columns are fixedly installed in a square shape on the edge of the lower surface of the magnetic coupling stress plate. The lower ends of the second guide columns penetrate the upper plate through the corresponding second guide holes, and the second guide columns are sleeved with a second return spring.

[0011] The above-mentioned magnetic levitation flywheel pavement energy capturer, the transmission gear group includes a driven gear, a first up-frequency gear, a reversing gear, a second up-frequency gear, a first transmission gear, a second transmission gear, a first final-stage gear, and a second final-stage gear. The center of the driven gear is provided with a spiral groove that cooperates with the driving screw. The driven gear is respectively engaged with the first up-frequency gear and the reversing gear on the left and right, and the reversing gear is engaged with the second up-frequency gear. The first transmission gear is coaxially installed with the first up-frequency gear and is located below the first up-frequency gear. The second transmission gear is coaxially installed with the second up-frequency gear and is located below the second up-frequency gear. The first transmission gear is engaged with the first final-stage gear, the second transmission gear is engaged with the second final-stage gear, and the second final-stage gear is located below the first final-stage gear.

[0012] The above-mentioned magnetic levitation flywheel road energy capturer has a support tube in the middle of the upper surface of the driven gear, the bottom of the support tube is fixed on the driven gear, the outer side of the support tube is fixedly connected to the inner ring of the first bearing, the outer ring of the first bearing is fixedly connected to the upper plate, the first up-frequency gear, the reversing gear and the second up-frequency gear are respectively installed on the first shaft, the second shaft and the third shaft, and the first shaft, the second shaft and the third shaft are respectively installed on the upper plate through the second bearing, the third bearing and the fourth bearing.

[0013] The above-mentioned magnetic levitation flywheel pavement energy capturer, the magnetic levitation flywheel electromagnetic power generation group includes a magnetic levitation flywheel, a first electromagnetic power generation stator and a second electromagnetic power generation stator; the magnetic levitation flywheel is vacuum suspended between the first electromagnetic power generation stator and the second electromagnetic power generation stator, the center position of the magnetic levitation flywheel is provided with a protruding shaft diameter, the middle of the first final stage gear is coaxially connected to the protruding shaft diameter of the magnetic levitation flywheel through a first one-way bearing, and the middle of the second final stage gear is coaxially connected to the protruding shaft diameter of the magnetic levitation flywheel through a second one-way bearing; the magnetic levitation flywheel is embedded with twelve cylindrical permanent magnets along a circumferential array, and the magnetic poles of the twelve cylindrical permanent magnets are staggered, the first electromagnetic power generation stator is fixedly mounted on the inner wall of the sealed shell, and the second electromagnetic power generation stator is fixedly mounted on the bottom of the inner surface of the sealed shell, and the first electromagnetic power generation stator and the second electromagnetic power generation stator are both embedded with twelve induction coils along a circumferential array.

[0014] The above-mentioned magnetic levitation flywheel road surface energy capturer has a first magnetic ring installed in the middle of the protruding shaft diameter of the magnetic levitation flywheel, a second magnetic ring is installed on the periphery of the first magnetic ring, the second magnetic ring is fixed on the first electromagnetic generating stator, and the first magnetic ring and the second magnetic ring constitute a radial permanent magnetic bearing; a third magnetic ring is installed above the bottom of the magnetic levitation flywheel, and the second magnetic ring and the third magnetic ring constitute a first axial permanent magnetic bearing; a fourth magnetic ring is installed at the bottom of the magnetic levitation flywheel, and the fifth magnetic ring is installed at the bottom center of the sealed shell, and the fourth magnetic ring and the fifth magnetic ring constitute a second axial permanent magnetic bearing.

[0015] The above-mentioned magnetic levitation flywheel pavement energy capturer is in a vacuum suspension state under the joint action of the radial permanent magnetic bearing, the first axial permanent magnetic bearing, the second axial permanent magnetic bearing and the sealed shell; when external energy supply is required, the induction coil is closed, the magnetic levitation flywheel rotates, and the induction coil generates electrical energy due to electromagnetic induction, and transmits the electrical energy to the outside through a wire; when external energy supply is not required, the induction coil is disconnected, and the induction coil will not hinder the rotation of the magnetic levitation flywheel. Since the magnetic levitation flywheel is in a vacuum suspension state, the energy loss of the magnetic levitation flywheel during the rotation process can be ignored. Under the continuous stimulation of pedestrians, the rotation speed of the magnetic levitation flywheel continues to increase, thereby realizing the storage of energy in the form of kinetic energy inside the power generation unit.

[0016] An application of a magnetic levitation flywheel pavement energy harvester in self-powered body temperature monitoring. Part of the electrical energy generated by the magnetic levitation flywheel pavement energy harvester is supplied to a body temperature monitoring device, forming a self-powered body temperature monitoring device. The self-powered body temperature monitoring device includes a magnetic levitation flywheel pavement energy harvester, a circuit processing module, a power management module, a body temperature monitoring device, a wireless transmission module, and a remote terminal.

[0017] The magnetic levitation flywheel pavement energy harvester captures energy, which is then rectified and stabilized by the circuit processing module and then transmitted to the power management module. The power management module provides power for the body temperature monitoring device and the wireless transmission module. The body temperature monitoring device monitors the pedestrian's body temperature data and transmits the monitored pedestrian's body temperature data via wired transmission to the wireless transmission module. The wireless transmission module wirelessly transmits the pedestrian's body temperature data to a remote terminal.

[0018] The beneficial effects of the present invention are:

[0019] 1. The magnetic levitation flywheel in the power generation unit of the present invention serves as the electromagnetic power generation rotor, combining flywheel energy storage technology and permanent magnetic bearing technology to achieve a vacuum suspension state of the electromagnetic power generation rotor, thereby improving the operating speed and time of the magnetic levitation flywheel and the energy collection density. Moreover, when external applications do not require power supply, the device itself can serve as a mechanical battery to store energy in the form of kinetic energy inside the power generation unit, and can adapt to different energy supply requirements.

[0020] 2. The present invention converts pedestrian pressure excitation into controllable magnetic excitation through magnetic coupling. The entire power generation unit can be installed in a sealed vacuum, which improves the device's reliability in harsh environments and its service life.

[0021] 3. The power generation unit of the present invention slowly releases the pulse energy of pedestrians' stepping by adopting screw drive, thereby improving the impact resistance of the device.

[0022] 4. The present invention designs a self-powered body temperature monitoring device, which solves the energy supply problem of current body temperature monitoring devices, expands the popularity of body temperature monitoring systems, and has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a diagram of the application scenario of the self-powered body temperature monitoring of the present invention.

[0024] Figure 2 This is a schematic diagram of the overall structure of the magnetic levitation flywheel road energy harvester of the present invention.

[0025] Figure 3 It is a schematic diagram of the overall structure of the power generation unit of the present invention.

[0026] Figure 4 It is an exploded view of the structure of the power generation unit of the present invention after removing the sealed shell.

[0027] Figure 5 It is a cross-sectional view of the internal structure of the sealed casing of the power generation unit of the present invention.

[0028] Figure 6 It is a schematic diagram of the screw drive structure of the power generation unit of the present invention.

[0029] Figure 7 It is a schematic diagram of the mechanical transmission structure of the power generation unit of the present invention.

[0030] Figure 8 It is a schematic diagram of the structure of the electromagnetic power generation rotor portion of the power generation unit of the present invention.

[0031] Figure 9 Schematic diagram of the structure of the electromagnetic power generation module of the power generation unit of the present invention.

[0032] Figure 10 Schematic diagram of the working process of the self-powered body temperature monitoring system of the present invention.

[0033] In the figure: 1. Magnetic levitation flywheel road surface energy harvester; 2. Foundation; 3. Pressure plate; 4. Power generation unit; 5. Lifting plate assembly; 6. Sealed vacuum chamber; 7. Driving assembly; 8. Transmission gear set; 9. Magnetic levitation flywheel electromagnetic power generation group; 10. Mounting plate; 11. First permanent magnet; 12. First guide post; 13. First return spring; 14. Sealed housing; 15. Magnetic coupling stress plate; 16. Second permanent magnet; 17. Driving screw; 18. Second guide post; 19. Second return spring; 20. Upper plate; 21. Driven gear; 22. First frequency-increasing gear; 23. Reversing gear; 24. Second frequency-increasing gear; 25. First transmission Drive gear; 26. Second transmission gear; 27. First final-stage gear; 28. Second final-stage gear; 29. ​​Support cylinder; 30. First bearing; 31. First shaft; 32. Second shaft; 33. Third shaft; 34. Second bearing; 35. Third bearing; 36. Fourth bearing; 37. Magnetic levitation flywheel; 38. First electromagnetic generating stator; 39. Second electromagnetic generating stator; 40. First one-way bearing; 41. Second one-way bearing; 42. Cylindrical permanent magnet; 43. Induction coil; 44. First magnetic ring; 45. Second magnetic ring; 46. Third magnetic ring; 47. Fourth magnetic ring; 48. Fifth magnetic ring; 49. Self-powered body temperature monitoring system. DETAILED DESCRIPTION

[0034] The present invention will be further described below with reference to the accompanying drawings.

[0035] like Figure 1As shown, when the present invention is applied, an array of several magnetic levitation flywheel road energy harvesters 1 is installed on the foundation, and energy is captured by pedestrians stepping on the tread plate 3, and the generated electrical energy is supplied to the self-powered body temperature monitoring system 49.

[0036] like Figures 2 to 4 As shown, the magnetic levitation flywheel pavement energy harvester 1 includes a stepping plate 3 and a power generation unit 4, and several of the power generation units 4 are linearly arrayed under the stepping plate 3. The power generation unit 4 includes a lifting plate assembly 5 and a sealed vacuum chamber 6. The lifting plate assembly 5 includes a mounting plate 10, a first permanent magnet 11, a first guide column 12, and a first return spring 13. The first permanent magnet 11 is mounted at the symmetrical center position of the square mounting plate 10. Four first guide columns 12 are distributed in a square shape on the lower surface of the mounting plate 10, and each of the first guide columns 12 is sleeved with a first return spring 13; the outside of the sealed vacuum chamber 6 is a sealed shell 14, and the edge of the sealed shell 14 is provided with four first guide holes, which correspond to the four first guide columns 12 respectively; the inside of the sealed vacuum chamber 6 is provided with a drive assembly 7, a transmission gear set 8 and a magnetic levitation flywheel electromagnetic power generation group 9 from top to bottom.

[0037] like Figures 2 to 6 As shown, the driving assembly 7 includes a magnetic coupling stress plate 15, a second permanent magnet 16, a driving screw 17, a second guide column 18 and a second reset spring 19. The second permanent magnet 16 repels the first permanent magnet 11 and is installed at the center part of the upper surface of the magnetic coupling stress plate 15. The driving screw 17 is vertically installed at the center position of the lower surface of the magnetic coupling stress plate 15. An upper plate 20 is horizontally arranged at the upper part of the closed shell. The upper plate 20 is fixed on the inner wall of the closed shell, and four second guide holes are opened in a square shape on the upper plate 20; four second guide columns 18 are fixedly installed in a square shape on the edge position of the lower surface of the magnetic coupling stress plate 15, and the lower ends of the second guide columns 18 penetrate the upper plate 20 through the corresponding second guide holes. The second guide columns 18 are sleeved with a second reset spring 19.

[0038] like Figure 5 and Figure 7As shown, the transmission gear set 8 includes a driven gear 21, a first frequency-increasing gear 22, a reversing gear 23, a second frequency-increasing gear 24, a first transmission gear 25, a second transmission gear 26, a first final-stage gear 27, and a second final-stage gear 28. The center of the driven gear 21 is provided with a spiral groove that cooperates with the driving screw 17. The driven gear 21 is respectively engaged with the first frequency-increasing gear 22 and the reversing gear 23 on the left and right sides. The reversing gear 23 is engaged with the second frequency-increasing gear 24. The first transmission gear 25 is coaxially mounted with the first frequency-increasing gear 22 and is located below the first frequency-increasing gear 22. The second transmission gear 26 is coaxially mounted with the second frequency-increasing gear 24 and is located below the second frequency-increasing gear 24. The first transmission gear The movable gear 25 is engaged with the first final-stage gear 27, and the second transmission gear 26 is engaged with the second final-stage gear 28. The second final-stage gear 28 is located below the first final-stage gear 27; a support tube 29 is provided in the middle of the upper surface of the driven gear 21, and the bottom of the support tube 29 is fixed on the driven gear 21. The outer side of the support tube 29 is fixedly connected to the inner ring of the first bearing 30, and the outer ring of the first bearing 30 is fixedly connected to the upper plate 20. The first frequency-increasing gear 22, the reversing gear 23, and the second frequency-increasing gear 24 are respectively installed on the first shaft 31, the second shaft 32, and the third shaft 33. The first shaft 31, the second shaft 32, and the third shaft 33 are respectively installed on the upper plate 20 through the second bearing 34, the third bearing 35, and the fourth bearing 36.

[0039] like Figures 8 and 9As shown, the magnetic levitation flywheel electromagnetic power generation group 9 includes a magnetic levitation flywheel 37, a first electromagnetic power generation stator 38 and a second electromagnetic power generation stator 39; a protruding shaft diameter is provided at the center of the magnetic levitation flywheel 37, the middle of the first final stage gear 27 is coaxially connected to the protruding shaft diameter of the magnetic levitation flywheel 37 through a first one-way bearing 40, a first magnetic ring 44 is installed in the middle section of the protruding shaft diameter of the magnetic levitation flywheel 37, a second magnetic ring 45 is installed on the periphery of the first magnetic ring 44, the second magnetic ring 45 is fixed on the first electromagnetic power generation stator 38, the first magnetic ring 44 and the second magnetic ring 45 constitute a radial permanent magnetic bearing, a third magnetic ring 46 is installed above the bottom of the magnetic levitation flywheel 37, the second magnetic ring 45 and the third magnetic ring 46 constitute a first axial permanent magnetic bearing, a fourth magnetic ring 47 is installed below the bottom of the magnetic levitation flywheel 37, and the fifth magnetic ring 48 is installed in the sealed housing 14 At the bottom center, the fourth magnetic ring 47 and the fifth magnetic ring 48 constitute a second axial permanent magnetic bearing. The first axial permanent magnetic bearing and the second axial permanent magnetic bearing limit the axial movement of the magnetic levitation flywheel 37 and keep the magnetic levitation flywheel 37 suspended between the first electromagnetic generating stator 38 and the second electromagnetic generating stator 39. The radial permanent magnetic bearing can limit the radial movement of the magnetic levitation flywheel 37 during rotation. The magnetic levitation flywheel 37 is embedded with twelve cylindrical permanent magnets 42 along a circumferential array, and the magnetic poles of the twelve cylindrical permanent magnets 42 are staggered. The first electromagnetic generating stator 38 is fixedly mounted on the inner wall of the sealed shell 14, and the second electromagnetic generating stator 39 is fixedly mounted on the bottom of the inner surface of the sealed shell 14. The first electromagnetic generating stator 38 and the second electromagnetic generating stator 39 are both embedded with twelve induction coils 43 along a circumferential array.

[0040] The magnetic levitation flywheel 37 is in a vacuum suspension state under the joint action of the radial permanent magnetic bearing, the first axial permanent magnetic bearing, the second axial permanent magnetic bearing and the sealed shell 14; when external energy is required, the induction coil 43 is closed, the magnetic levitation flywheel 37 rotates, and the induction coil 43 generates electrical energy due to electromagnetic induction and transmits the electrical energy to the outside through a wire; when external energy is not required, the induction coil 43 is disconnected, and the induction coil 43 will not hinder the rotation of the magnetic levitation flywheel 37. Since the magnetic levitation flywheel 37 is in a vacuum suspension state, the energy loss of the magnetic levitation flywheel 37 during the rotation process can be ignored. Under the continuous stimulation of pedestrians, the rotation speed of the magnetic levitation flywheel 37 continues to increase, thereby realizing the storage of energy in the form of kinetic energy inside the power generation unit 4.

[0041] The working principle of the magnetic levitation flywheel road energy harvester 1 of the present invention is as follows: when a pedestrian steps on the treading plate 3, the treading plate 3 drives the lifting plate assembly 5 to move downward. Since the lifting plate assembly 5 and the magnetic coupling stress plate 15 have a set of repelling permanent magnets, when the lifting plate assembly 5 descends, the magnetic coupling stress plate 15 will descend together under the excitation of the repulsive force, thereby driving the driving screw 17 to move downward. Since the driven gear 21 is engaged with the driving screw 17, when the driving screw 17 moves downward, the driven gear 21 will rotate counterclockwise (seen from top to bottom, the same below), and the driven gear 21 drives the first frequency-increasing gear 22 The reversing gear 23 rotates clockwise, the reversing gear 23 drives the second frequency-increasing gear 24 to rotate counterclockwise, the first frequency-increasing gear 22 drives the coaxial first transmission gear 25 to rotate clockwise, the second frequency-increasing gear 24 drives the coaxial second transmission gear 26 to rotate counterclockwise, the first transmission gear 25 drives the first final-stage gear 27 to rotate counterclockwise, and the second transmission gear 26 drives the second final-stage gear 28 to rotate clockwise. Since the first one-way bearing 40 and the second one-way bearing 41 only strongly hinder the counterclockwise movement, they do not hinder the clockwise movement. Therefore, when the driving screw 17 moves downward, only the first final gear 27 excites the rotation of the magnetic levitation flywheel. When the pedestrian leaves the stepping plate 3, the upper lifting plate assembly 5 is subjected to the upward force of the first return spring 13, driving the stepping plate 3 to rise, and the magnetic coupling stress plate 15 is also subjected to the upward force of the second return spring 19, and rises synchronously, thereby driving the driving screw 17 to move upward. At this time, all gears in the transmission gear set 8 will move in the opposite direction to the downward movement of the driving screw 17. At this time, only the second final gear 28 excites the rotation of the magnetic levitation flywheel, and the magnetic levitation flywheel 37 is in Under the combined action of the axial limitation of the first axial permanent magnetic bearing and the second axial permanent magnetic bearing and the radial limitation of the radial permanent magnetic bearing, the magnetic levitation flywheel 37 is suspended between the first electromagnetic generating stator 38 and the second electromagnetic generating stator 39. The resistance to which the magnetic levitation flywheel 37 is subjected is negligible, so that the magnetic levitation flywheel can rotate at high speed under the excitation of the first final-stage gear 27 and the second final-stage gear 28 respectively. When external energy is required, the induction coil 43 embedded in the first electromagnetic generating stator 38 and the second electromagnetic generating stator 39 is closed. The induction coil 43 generates electrical energy due to electromagnetic induction and transmits the electrical energy to the nearby small electromechanical system through wires.When no external energy is required, the induction coil 43 is disconnected. No electromagnetic resistance is generated between the induction coil 43 and the magnetic levitation flywheel 37, preventing the flywheel 37 from rotating. Because the flywheel 37 is in a vacuum state, energy loss during rotation is negligible. With the constant stimulation of pedestrians, the flywheel 37's rotation speed increases, allowing energy to be stored in the form of kinetic energy within the power generation unit 4.

[0042] The application of magnetic levitation flywheel pavement energy harvester in self-powered body temperature monitoring. Part of the electrical energy generated by the magnetic levitation flywheel pavement energy harvester is supplied to the body temperature monitoring device, forming a self-powered body temperature monitoring device. The self-powered body temperature monitoring device includes a magnetic levitation flywheel pavement energy harvester, a circuit processing module, a power management module, a body temperature monitoring device, a wireless transmission module and a remote terminal; the body temperature monitoring device uses a thermometer.

[0043] The magnetic levitation flywheel pavement energy harvester captures energy, which is then rectified and stabilized by the circuit processing module and then transmitted to the power management module. The power management module provides power for the body temperature monitoring device and the wireless transmission module. The body temperature monitoring device monitors the pedestrian's body temperature data and transmits the monitored pedestrian's body temperature data via wired transmission to the wireless transmission module. The wireless transmission module wirelessly transmits the pedestrian's body temperature data to a remote terminal.

Claims

1. A magnetic levitation flywheel road energy harvester, characterized by: The magnetic levitation flywheel pavement energy harvester is installed on the foundation. The magnetic levitation flywheel pavement energy harvester includes a treading plate and a power generation unit. Several power generation units are linearly arrayed under the treading plate. The power generation unit includes a lifting plate assembly and a sealed vacuum chamber. The sealed vacuum chamber is provided with a drive assembly, a transmission gear set and a magnetic levitation flywheel electromagnetic power generation unit from top to bottom. The transmission gear set drives the magnetic levitation flywheel electromagnetic power generation unit to generate electricity under the drive of the drive assembly. The outside of the sealed vacuum chamber is a sealed shell. The lifting plate assembly includes a mounting plate, a first permanent magnet, a first guide post, and a first return spring. The first permanent magnet is mounted at a symmetrical center of the square mounting plate. Four first guide posts are distributed in a square shape on the lower surface of the mounting plate. A first return spring is sleeved on each of the first guide posts. The driving assembly includes a magnetic coupling stress plate, a second permanent magnet, a driving screw, a second guide post and a second return spring. The second permanent magnet repels the first permanent magnet and is installed on the center part of the upper surface of the magnetic coupling stress plate. The driving screw is vertically installed at the center position of the lower surface of the magnetic coupling stress plate. An upper plate is horizontally arranged on the upper part of the sealed shell. The upper plate is fixed on the inner wall of the sealed shell. Four second guide holes are opened in a square shape on the upper plate. Four second guide posts are fixedly installed on the edge position of the lower surface of the magnetic coupling stress plate in a square shape. The lower ends of the second guide posts penetrate the upper plate through the corresponding second guide holes. The second guide posts are sleeved with a second return spring. The transmission gear set includes a driven gear, a first frequency-increasing gear, a reversing gear, a second frequency-increasing gear, a first transmission gear, a second transmission gear, a first final-stage gear, and a second final-stage gear. The center of the driven gear is provided with a spiral groove that cooperates with the driving screw. The driven gear is respectively meshed with the first frequency-increasing gear and the reversing gear on the left and right sides. The reversing gear is meshed with the second frequency-increasing gear. The first transmission gear is coaxially mounted with the first frequency-increasing gear and is located below the first frequency-increasing gear. The second transmission gear is coaxially mounted with the second frequency-increasing gear and is located below the second frequency-increasing gear. The first transmission gear is meshed with the first final-stage gear. The second transmission gear is meshed with the second final-stage gear. The second final-stage gear is located below the first final gear. The magnetic levitation flywheel electromagnetic power generation group includes a magnetic levitation flywheel, a first electromagnetic power generation stator and a second electromagnetic power generation stator; the magnetic levitation flywheel is vacuum suspended between the first electromagnetic power generation stator and the second electromagnetic power generation stator, a protruding shaft diameter is provided at the center of the magnetic levitation flywheel, the middle of the first final stage gear is coaxially connected to the protruding shaft diameter of the magnetic levitation flywheel through a first one-way bearing, and the middle of the second final stage gear is coaxially connected to the protruding shaft diameter of the magnetic levitation flywheel through a second one-way bearing; the magnetic levitation flywheel is embedded with twelve cylindrical permanent magnets along a circumferential array, and the magnetic poles of the twelve cylindrical permanent magnets are arranged in an alternating manner, the first electromagnetic power generation stator is fixedly mounted on the inner wall of the sealed shell, and the second electromagnetic power generation stator is fixedly mounted on the bottom of the inner surface of the sealed shell, and the first electromagnetic power generation stator and the second electromagnetic power generation stator are both embedded with twelve induction coils along a circumferential array.

2. The magnetic levitation flywheel road energy harvester according to claim 1, characterized in that: The edge portion of the sealed housing is provided with four first guide holes, which respectively correspond to the four first guide pillars.

3. The magnetic levitation flywheel road energy harvester according to claim 1, characterized in that: A support tube is provided in the middle of the upper surface of the driven gear, the bottom of the support tube is fixed on the driven gear, the outer side of the support tube is fixedly connected to the inner ring of the first bearing, the outer ring of the first bearing is fixedly connected to the upper plate, the first up-frequency gear, the reversing gear and the second up-frequency gear are respectively installed on the first shaft, the second shaft and the third shaft, and the first shaft, the second shaft and the third shaft are respectively installed on the upper plate through the second bearing, the third bearing and the fourth bearing.

4. The magnetic levitation flywheel road energy harvester according to claim 3 is characterized in that: A first magnetic ring is installed in the middle of the protruding shaft diameter of the magnetic levitation flywheel, a second magnetic ring is installed on the periphery of the first magnetic ring, the second magnetic ring is fixed on the first electromagnetic generating stator, and the first magnetic ring and the second magnetic ring constitute a radial permanent magnetic bearing; a third magnetic ring is installed above the bottom of the magnetic levitation flywheel, and the second magnetic ring and the third magnetic ring constitute a first axial permanent magnetic bearing; a fourth magnetic ring is installed at the bottom of the magnetic levitation flywheel, and the fifth magnetic ring is installed at the bottom center of the sealed shell, and the fourth magnetic ring and the fifth magnetic ring constitute a second axial permanent magnetic bearing.

5. The magnetic levitation flywheel road energy harvester according to claim 4, characterized in that: The magnetic levitation flywheel is in a vacuum suspension state under the joint action of the radial permanent magnetic bearing, the first axial permanent magnetic bearing, the second axial permanent magnetic bearing and the sealed shell; when external energy supply is required, the induction coil is closed, the magnetic levitation flywheel rotates, and the induction coil generates electrical energy due to electromagnetic induction, and transmits the electrical energy to the outside through a wire; when external energy supply is not required, the induction coil is disconnected, and the induction coil will not hinder the rotation of the magnetic levitation flywheel. Since the magnetic levitation flywheel is in a vacuum suspension state, the energy loss of the magnetic levitation flywheel during the rotation process can be ignored. Under the continuous stimulation of pedestrians, the rotation speed of the magnetic levitation flywheel continues to increase, thereby realizing the storage of energy in the form of kinetic energy inside the power generation unit.

6. An application of the magnetic levitation flywheel pavement energy harvester according to any one of claims 1 to 5 in self-powered body temperature monitoring, characterized in that: Part of the electrical energy generated by the magnetic levitation flywheel pavement energy harvester is supplied to the body temperature monitoring device, forming a self-powered body temperature monitoring device. The self-powered body temperature monitoring device includes a magnetic levitation flywheel pavement energy harvester, a circuit processing module, a power management module, a body temperature monitoring device, a wireless transmission module, and a remote terminal. The magnetic levitation flywheel pavement energy harvester captures energy, which is then rectified and stabilized by the circuit processing module and then transmitted to the power management module. The power management module provides power for the body temperature monitoring device and the wireless transmission module. The body temperature monitoring device monitors the pedestrian's body temperature data and transmits the monitored pedestrian's body temperature data via wired transmission to the wireless transmission module. The wireless transmission module wirelessly transmits the pedestrian's body temperature data to a remote terminal.

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