Self-luminous roller skates and control method thereof

Abstract

The present invention discloses a self-luminous roller skate and a control method thereof. The key technical solutions include a coaxial positioning mechanism comprising a mutual induction magnetic plate mounted on a bridge. The mutual induction magnetic plate exerts a repulsive force on a permanent magnet sleeve toward a pulley, ensuring that the permanent magnet sleeve maintains a distance of 3-5 cm from the mutual induction magnetic plate when the permanent magnet sleeve is positioned outside a magnetic induction coil assembly. The present invention utilizes a microprocessor-based built-in clock module to achieve self-timing. Furthermore, a Bluetooth interconnect module, when connected to a smart device, allows a magnetoresistive speed sensor to detect the roller skate's movement. The magnetoresistive speed sensor is equipped with a dual-channel operational amplifier and a differential amplifier to eliminate interference caused by induced voltage, exhibiting excellent anti-interference performance and enabling accurate pulley speed measurement.

Description

Technical Field

[0001] The present invention relates to sports shoes, and more particularly to a self-luminous roller skate and a control method thereof. Background Art

[0002] Roller skates, commonly known as roller skates or ice skates, refer to shoes with wheels. Roller skates are a product form of roller skating. They are simple sports machinery for roller skating and are a sports product that is deeply loved by the public, especially children.

[0003] Roller skates are generally categorized as casual, flat, speed, and extreme skates. Based on the wheel arrangement, they can be divided into single-row and multi-row styles. Beginners often choose the more stable double-row roller skates for initial training. With the development of roller skating, figure skating has also emerged. People often add light strips to the sides of their shoes, adding a variety of colors to the skating experience, making the sport even more exciting. However, existing roller skates require a power supply installed inside the skates to keep the LED light strips lit. When the batteries are depleted, they need to be replaced promptly, otherwise the light strips will not light up properly.

[0004] Chinese patent publication number CN113069753A discloses a portable skateboard. Its key technical features are: a power module including: a power generation component disposed within a pulley, configured to output an induced current when the pulley rotates; a mutual induction circuit coupled to the power generation component, responsive to the induced current to output a mutual induction voltage signal as an AC signal; a rectifier and voltage-stabilizing circuit connected to the mutual induction circuit, receiving the mutual induction voltage signal and outputting a regulated voltage signal as a DC signal; and a voltage compensation circuit connected to the output of the rectifier and voltage-stabilizing circuit, responsive to the regulated voltage signal being less than the driving voltage of the light strip, to output a compensation voltage. The present invention achieves conversion of mechanical energy into electrical energy through electromagnetic induction, resulting in energy conservation and environmental protection. Furthermore, the voltage compensation circuit can stably drive the light strip, maintaining normal lighting of the light strip.

[0005] The above scheme discloses a method of converting mechanical energy into electrical energy during the movement of the pulley to supply the normal lighting of the light strip through electromagnetic generation, but the power generation component and the mutual induction circuit are respectively arranged on the pulley and the skateboard bridge. When the pulley rotates, the magnetic resistance of the power generation component and the mutual induction circuit will affect the smoothness of the pulley rotation, and during assembly, the accuracy of the setting of the power generation component and the mutual induction component also directly affects the effect of electromagnetic induction.

[0006] Therefore, a new solution needs to be proposed to solve this problem. Summary of the Invention

[0007] In view of the deficiencies in the prior art, the present invention aims to provide a self-luminous roller skate and a control method thereof.

[0008] The above technical objectives of the present invention are achieved through the following technical solutions: a self-luminous roller skate, comprising a shoe body and a shoe seat, wherein the shoe seat is provided with a plurality of pulleys arranged in a double row, and a magnetic induction power generation module is provided between any one of the pulleys and the shoe seat for accumulating the kinetic potential energy of the pulley into electrical energy, wherein the magnetic induction power generation module comprises a permanent magnet sleeve and a magnetic induction coil assembly detachably mounted within the permanent magnet sleeve;

[0009] The permanent magnet sleeve is fixedly connected to one side of any pulley, the shoe seat is provided with a bridge for detachably connecting to the pulley, the magnetic induction coil group is detachably connected to one end of the bridge, and the bridge and the pulley are connected to the magnetic induction coil group and the permanent magnet sleeve via a coaxial positioning mechanism;

[0010] The coaxial positioning mechanism includes a mutual induction magnetic sheet arranged on the bridge frame, which acts on the permanent magnet sleeve to repel the pulley, and is used to keep the permanent magnet sleeve 3-5 cm away from the mutual induction magnetic sheet when the permanent magnet sleeve is arranged outside the magnetic induction coil group.

[0011] By adopting the above technical solution, in this application, a magnetic induction power generation module is set between any pulley and the shoe seat to realize self-generated power supply when the pulley rotates, which can power the light lamp group and save the trouble of replacing batteries. In addition, a coaxial positioning mechanism is set, which can use the mutual induction magnetic sheet to exert the repulsive force of the permanent magnet sleeve, thereby keeping the permanent magnet sleeve at a distance of 3-5 cm from the mutual induction magnetic sheet, which is conducive to the positioning of the permanent magnet sleeve and realizes the precise corresponding setting of the magnetic induction coil group and the permanent magnet sleeve during the assembly process, thereby improving the assembly accuracy of the permanent magnet sleeve and the magnetic induction coil group and ensuring the stability of the induced current.

[0012] The present invention is further configured as follows: the coaxial positioning mechanism also includes a positioning sleeve, the positioning sleeve is an integrated structure, one end of the positioning sleeve is formed with a narrow ring embedded in the pulley, the permanent magnet sleeve is sleeved on the inner wall of the positioning sleeve, and one side of the pulley is provided with a ring groove coaxially arranged therewith, and the ring groove is used to accommodate the interference fit of the narrow ring.

[0013] By adopting the above technical solution and setting the positioning sleeve, the coaxial setting of the permanent magnet sleeve and the pulley is achieved. Due to the interference fit setting of the narrow ring, the positioning sleeve can be quickly installed by engaging the narrow ring.

[0014] The present invention is further configured to include:

[0015] The light emitting module is electrically connected to the magnetic induction coil group. The light emitting module is arranged on the shoe body in a ring or array. When the pulley rotates, the light emitting module responds to the change in the rotation speed of the pulley to adjust the stroboscopic frequency of the light emitting module.

[0016] By adopting the above technical solution, the light-emitting module adjusts the stroboscopic frequency of the light-emitting module by changing the rotation speed of the pulley, so that during the figure skating process, the light-emitting module changes with the change of the sliding speed, achieving greater diversity.

[0017] The present invention is further configured as follows: a plurality of spaced-apart magnetic tiles of opposite polarity are provided on the mutual induction magnetic sheet, and adjacent magnetic tiles of opposite polarity are arranged with opposite polarity toward the permanent magnet sleeve, so as to provide a balancing force of mutual attraction or repulsion between the mutual induction magnetic sheet and the permanent magnet sleeve.

[0018] By adopting the above technical solution, the mutual induction magnetic sheet is provided with magnetic tiles of opposite polarity, and a plurality of magnetic tiles of opposite polarity are spliced ​​together to form a whole. When in use and assembled, the adjacent magnetic tiles of opposite polarity facing the same side provide repulsion and attraction respectively, thereby achieving an effective spacing of 3-5 cm between the permanent magnet sleeve (4) and the mutual induction magnetic sheet.

[0019] The present invention is further configured as follows: at least two groups of mutual induction magnetic sheets are provided, one group of mutual induction magnetic sheets is provided at the opening of the positioning sleeve, the mutual induction magnetic sheets are provided on the side of the magnetic induction power generation module away from the permanent magnet sleeve, and a magnetoresistive speed sensor is provided on the bridge frame, which is arranged toward the mutual induction magnetic sheets, and the magnetoresistive speed sensor collects the magnetic field changes of the mutual induction magnetic sheets.

[0020] By adopting the above technical solution, two groups of mutual induction magnetic sheets are provided, one of which is provided in the positioning shaft sleeve, and can realize the repulsive force acting on the permanent magnetic sleeve toward the pulley, so as to locate the position of the permanent magnetic sleeve (4) when assembling the permanent magnetic sleeve (4), while the other group of mutual induction magnetic sheets is provided on the bridge frame, and can improve the installation accuracy between the permanent magnetic sleeve and the magnetic induction coil group through the force between the two groups of mutual induction magnetic sheets, and at the same time, with the help of the magnetoresistive speed sensor, the magnetic resistance change generated when the magnetic field of the mutual induction magnetic sheet changes, thereby judging the rotation rate of the pulley, and realizing high-precision judgment and collection.

[0021] The present invention is further configured as follows: the magnetic induction power generation module is coupled to a magnetoresistive speed sensor to power the magnetoresistive speed sensor, wherein the magnetoresistive speed sensor includes: a magnetoresistive sensor, a dual-channel operational amplifier, a differential amplifier, and a single-power rail-to-rail transistor comparator electrically connected in sequence;

[0022] The dual-channel operational amplifier is coupled to the output end of the magnetoresistive sensor, receives the induced voltage signal output by the magnetoresistive sensor in response to the magnetic field change, and suppresses and eliminates the voltage of the induced voltage signal to be less than or equal to 1 ;

[0023] The differential amplifier is connected to the two output ends of the dual-channel operational amplifier, receives the differential signal output by the dual-channel operational amplifier, and then performs signal gain.

[0024] By adopting the above technical solution, a magnetoresistive sensor is set in the magnetoresistive speed sensor to collect and feedback the changes in the magnetic field, and then the collected signals are respectively amplified by the dual-channel operational amplifier at the same magnification, and the data signal after gain amplification is differentiated by the differential amplifier to eliminate the influence of fluctuations caused by the induced voltage and the environment, so as to suppress and eliminate the voltage of the induced voltage signal to be less than or equal to 1. , improve the acquisition accuracy of the magnetoresistive speed sensor.

[0025] The present invention is further configured as follows: the magnetoresistive sensor uses an integrated chip AA747 based on a double current isolated Wheatstone bridge, and when the common mode voltage of the magnetoresistive sensor is half the supply voltage of the magnetic induction power generation module, the output is 30~100mV p-p voltage.

[0026] By adopting the above technical solution, the magnetoresistive sensor is based on an integrated chip of a dual current-isolated Wheatstone bridge, which facilitates the integrated application of circuits, is economical and reduces the difficulty of maintenance and detection.

[0027] The present invention is further configured to include:

[0028] A microcontroller is coupled to the magnetoresistive speed sensor and is used to obtain the speed condition and convert the analog-to-digital conversion into speed data;

[0029] The mileage recording module is coupled to the microcontroller and receives the speed per unit time when the magnetoresistive speed sensor is powered to output the accumulated mileage information of a single use;

[0030] The Bluetooth interconnection module is coupled to the microcontroller, and in response to the Bluetooth interconnection module being interconnected with the smart device, reads the rotational speed data encoded and decoded in the WeChat controller and transmits it to the smart device.

[0031] By adopting the above technical solution, a microcontroller is set up to obtain real-time rotational speed through coupling with a magnetoresistive rotational speed sensor, and the analog voltage and current generated by the rotational speed are processed into digital signals through A / D conversion, encoding and decoding. In addition, the mileage recording module, while the microcontroller obtains the rotational speed, measures the mileage information per unit time according to the standard specifications of the pre-examined pulley. Finally, through the Bluetooth interconnection module, the movement trajectory, mileage, speed and power supply time of the pulley shoes can be used to connect to smart terminals such as smart bracelets, mobile phones, tablets, etc. through Bluetooth, and the data can be shared synchronously.

[0032] A control method for self-luminous roller skates is applied to the self-luminous roller skates, and the control method includes:

[0033] Assembly: Fix the integrally stamped positioning sleeve in the annular groove on one side of the pulley, and then sleeve the pulley on the end of the bridge. At this time, the positioning sleeve is sleeved outside the magnetic induction coil group, and the permanent magnet sleeve is sleeved outside the magnetic induction coil group through the positioning sleeve. The mutual induction magnetic piece located at the opening of the positioning sleeve exerts a repulsive force toward the pulley on the permanent magnet sleeve, and an attractive force opposite to the repulsive force and of the same magnitude. This can achieve positioning of the permanent magnet sleeve when installing it, and the mutual induction magnetic piece arranged on the bridge and the mutual induction magnetic piece on the positioning sleeve provide a mutually repulsive force to position the installation position of the positioning sleeve.

[0034] Usage: When people wear roller skates for exercise, the pulley rotates due to the friction between the ground and the bearing inside the pulley. At this time, the magnetic induction coil group continuously cuts the magnetic flux lines of the permanent magnet sleeve when the pulley drives the permanent magnet sleeve to rotate, generating magnetic induction voltage and magnetic induction current. The power module rectifies and stabilizes the magnetic induction voltage to output the supply voltage.

[0035] When the pulley rotates and outputs the power supply voltage, the magnetoresistive sensor is powered on and starts. When the common mode voltage generated by the magnetic field change of the inductive mutual inductance magnetic piece is 2.5, the output is 30-100V. p-p The voltage is sent to the dual-channel operational amplifier to suppress and eliminate the voltage of the induced voltage signal which is less than 1 , and then the differential amplifier amplifies the differential signal to improve the accuracy of speed detection;

[0036] When the pulley rotates to output the power supply voltage, it also supplies power to the microcontroller. The microcontroller receives the magnetic induction current or magnetic induction voltage, and after analog-to-digital conversion, it outputs a serial pulse signal that matches the magnetic induction voltage or magnetic induction current to the light-emitting module, thereby adjusting the stroboscopic frequency of the light-emitting module.

[0037] When the microcontroller is powered on, the microcontroller starts timing and obtains the average speed within a unit time period to calculate the mileage of the roller skates.

[0038] After the Bluetooth interconnection module is connected to the smart device through Bluetooth, the speed and mileage information output by the microprocessor is synchronously transmitted to the smart terminal.

[0039] In summary, the present invention has the following beneficial effects:

[0040] In the present application, a magnetic induction power generation module is provided between any pulley and the shoe seat to realize self-generated power supply when the pulley rotates, which can power the light-emitting lamp group, eliminating the trouble of replacing batteries. In addition, a coaxial positioning mechanism is provided, which can exert the repulsive force of the permanent magnet sleeve through the setting of the mutual induction magnetic sheet, thereby maintaining the permanent magnet sleeve at a distance of 3-5 cm from the mutual induction magnetic sheet, which is conducive to the positioning of the permanent magnet sleeve and realizes the precise corresponding setting of the magnetic induction coil group and the permanent magnet sleeve during the assembly process, thereby improving the assembly accuracy of the permanent magnet sleeve and the magnetic induction coil group and ensuring the stability of the induced current;

[0041] And it drives the microprocessor while supplying power. The built-in clock module of the microprocessor can realize self-timing. After the Bluetooth interconnection module is matched and interconnected with the smart device, the magnetoresistive speed sensor can obtain the movement status of the roller skates.

[0042] The magnetoresistive speed sensor is equipped with a dual-channel operational amplifier and a differential amplifier, which can eliminate the interference caused by the induced voltage and has good anti-interference performance, so that the speed of the pulley can be accurately obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a structural schematic diagram of the present invention;

[0044] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0045] Figure 3 It is a partial cross-sectional view of the pulley in the present invention;

[0046] Figure 4 This is a circuit diagram of the magnetoresistive speed sensor of the present invention;

[0047] Figure 5 This is the waveform diagram of the output end of the magnetoresistive speed sensor;

[0048] Figure 6 2 is a circuit diagram of the microcontroller in the present invention.

[0049] In the figure: 1. Shoe body; 2. Shoe seat; 3. Pulley; 4. Permanent magnet sleeve; 5. Magnetic induction coil group; 6. Bridge; 7. Mutually inductive magnetic sheet; 8. Positioning sleeve; 9. Narrow ring; 10. Ring groove; 11. Magnetoresistive sensor; 12. Dual-channel operational amplifier; 13. Differential amplifier; 14. Single-power rail-to-rail transistor comparator. DETAILED DESCRIPTION

[0050] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0051] like Figure 1 and Figure 2 As shown, a self-luminous roller skate comprises a shoe body 1 and a shoe seat 2, a bridge frame 6 is provided on the shoe seat 2, and the two end portions of the bridge frame 6 are detachably connected to pulleys 3 through an axis, so that the pulleys 3 are arranged in a double row at the bottom of the shoe seat 2, and a bearing is fixedly connected to the central axis of the pulley 3, and the bearing is slidably connected to the axis, so that the pulley 3 can be displaced and slid along the length direction of the axis, and a magnetic induction power generation module for accumulating the kinetic potential energy of the pulley 3 into electrical energy is provided between any pulley 3 and the shoe seat 2, and the magnetic induction power generation module comprises a permanent magnet sleeve 4 and a magnetic induction coil group 5 detachably mounted in the permanent magnet sleeve 4.

[0052] like Figure 2 and Figure 3 As shown, the coaxial positioning mechanism is fixedly connected to one side of the pulley 3 and is sleeved on the shaft with the pulley 3, wherein the positioning sleeve 8 on the coaxial positioning mechanism is made into an integral structure by stamping and spinning processes, and one side of the positioning sleeve 8 is spun to form a narrow ring 9 embedded in the ring groove 10 on one side of the pulley 3, and when assembling the positioning sleeve 8, the narrow ring 9 is quickly interference fit to one side of the pulley 3 after applying adhesive along the outer peripheral wall of the narrow ring 9 to detect the coaxiality of the positioning sleeve 8 and the pulley 3.

[0053] like Figure 3 As shown, the permanent magnet sleeve 4 is fixedly connected inside the positioning sleeve 8, so that a magnetic induction power generation module is set at at least one of the several pulleys 3 arranged in a double row, and a mutual induction magnetic piece 7 formed by splicing several opposite polarity magnetic tiles is sleeved in the wide side opening of the positioning sleeve 8. Due to the polarity setting of the opposite polarity magnetic pieces, the sides of the two adjacent opposite polarity magnetic pieces that are close to each other are S pole and N pole respectively, and the polarity of the adjacent opposite polarity magnetic pieces toward the same side is controlled by magnetization to be reversed, thereby realizing a ring array setting of SN repeated cycles on one side of the mutual induction magnetic piece 7. When the mutual induction magnetic piece 7 is sleeved on the opening of the positioning sleeve 8, the N pole or S pole of the array on the end face of the mutual induction magnetic piece 7 is used to exert an attraction force or a repulsion force on the end face of the permanent magnet sleeve 4. Under the action of the attraction and repulsion, the permanent magnet sleeve 4 is kept 3-5 cm away from the mutual induction magnetic piece 7, and at this time, the end face of the mutual induction magnetic piece 7 is flush with the end face of the positioning sleeve 8.

[0054] like Figure 4 、 5 and 6, further comprising:

[0055] The light-emitting module is electrically connected to the magnetic induction coil group 5. The light-emitting module is arranged in a ring or array on the shoe body 1. When the pulley 3 rotates, the light-emitting module responds to the change in the rotation rate of the pulley 3 to adjust the stroboscopic frequency of the light-emitting module. In this embodiment, the light-emitting module includes a plurality of light strips. The light strips are outlined along the edge or upper of the shoe body 1 to form a specified pattern, and the light strips are connected to the microcontroller through a coding and decoding chip, and through a thyristor switch module, the light-emitting frequency of the light strips is controlled according to the induced current, so that the lighting of the light strips changes accordingly with the rotation speed of the pulley 3, thereby increasing the effect of the figure skates.

[0056] At least two groups of mutual induction magnetic sheets 7 are provided, one group of mutual induction magnetic sheets 7 is provided at the opening of the positioning sleeve 8, and the other group of mutual induction magnetic sheets 7 is provided on the side of the magnetic induction power generation module away from the permanent magnet sleeve 4. A magnetoresistive speed sensor is provided on the bridge 6 and is arranged toward the mutual induction magnetic sheets 7. The magnetoresistive speed sensor collects the magnetic field changes of the mutual induction magnetic sheets 7, and the magnetic induction power generation module is coupled to the magnetoresistive speed sensor to power the magnetoresistive speed sensor. The magnetoresistive speed sensor includes: a magnetoresistive sensor 11, a dual-channel operational amplifier 12, a differential amplifier 13 and a single power rail-to-rail transistor comparator 14 electrically connected in sequence. The dual-channel operational amplifier 12 is coupled to the output end of the magnetoresistive sensor 11, receives the induced voltage signal output by the magnetoresistive sensor 11 in response to the magnetic field change, and suppresses and eliminates the voltage of the induced voltage signal to be less than or equal to 1 The differential amplifier 13 is connected to the two output terminals of the dual-channel operational amplifier 12, receives the differential signal output by the dual-channel operational amplifier 12, and performs signal amplification. In this embodiment, the magnetoresistive sensor 11 uses the integrated chip AA747 based on a dual current-isolated Wheatstone bridge. When the common-mode voltage of the magnetoresistive sensor 11 is half the supply voltage of the magnetic induction power generation module, the output is 30-100 mV. p-p voltage.

[0057] Also includes

[0058] The microcontroller is coupled to the magnetoresistive speed sensor to obtain the speed status and convert the analog-to-digital conversion into speed data. In this embodiment, a single-chip microcomputer system of the surface mount chip MSP430f149 is selected, such as Figure 6As shown, the single-chip microcomputer system is equipped with clock circuits with clock rates of 8HZ and 32.768HZ respectively, providing a microcontroller to realize switching between low-frequency and high-frequency working modes, and using the low-frequency mode to reduce the power supply burden, and the P1 end of the microcontroller is set as the input end, and a single-row socket is externally connected for electrical connection of magnetoresistive speed sensors respectively arranged at multiple pulleys 3. For example, P1.0, P1.1, P1.2, P1.3 and P1.4 can be separately connected to independent magnetoresistive speed sensors, and multiple speed signals are synchronously received by the microcontroller, and the difference in the processed signals is further compared. On the one hand, after the differential amplifier 13 eliminates the interference of the induced voltage, the speed difference between the pulleys 3 can be judged, thereby judging On the other hand, the data collected by multiple magnetoresistive speed sensors can be statistically analyzed and calculated with the average value, so as to obtain accurate and precise speed and mileage. The algorithm for mileage calculation is as follows: Vaverage is the average speed of the pulley 3 per minute, and the circumference of the pulley 3 is selected as the conventional default 0.1m, then the mileage S=Vaverage*0.1. An adder counter is used as a mileage recording module and is coupled to the microcontroller. When the magnetoresistive speed sensor is powered on, the speed per unit time is received to output the accumulated mileage information of a single use. Specifically, when the microcontroller outputs the mileage per unit time, the addition and superposition counting are performed in sequence to obtain the accumulated mileage information.

[0059] The Bluetooth interconnection module is coupled to the microcontroller, and in response to the Bluetooth interconnection module being interconnected with the smart device, reads the rotational speed data encoded and decoded in the WeChat controller and transmits it to the smart device.

[0060] Embodiment 2: A control method for self-luminous roller skates, which is applied to self-luminous roller skates, includes:

[0061] Assembly: Fix the integrally stamped positioning sleeve 8 in the annular groove 10 on one side of the pulley 3, and then sleeve the pulley 3 on the end of the bridge 6. At this time, the positioning sleeve 8 is sleeved outside the magnetic induction coil group 5, and the permanent magnet sleeve 4 is sleeved outside the magnetic induction coil group 5 through the positioning sleeve 8, and the mutual induction magnetic piece 7 located at the opening of the positioning sleeve 8 exerts a repulsive force on the permanent magnet sleeve 4 toward the pulley 3, and an attractive force opposite to the repulsive force and of the same magnitude, so that the position of the permanent magnet sleeve 4 can be positioned when the permanent magnet sleeve 4 is installed, and the mutual induction magnetic piece 7 on the bridge 6 and the mutual induction magnetic piece 7 on the positioning sleeve 8 provide a mutually repulsive force to position the installation position of the positioning sleeve 8;

[0062] Usage: When people wear roller skates for exercise, the pulley 3 rotates under the action of friction with the ground and the bearing inside the pulley 3. At this time, the magnetic induction coil group 5 continuously cuts the magnetic flux lines of the permanent magnet sleeve 4 when the pulley 3 drives the permanent magnet sleeve 4 to rotate, generating magnetic induction voltage and magnetic induction current. The power module rectifies and stabilizes the magnetic induction voltage to output the power supply voltage;

[0063] When the pulley 3 rotates and outputs the power supply voltage, the magnetoresistive sensor 11 is powered on and starts to sense the magnetic field change of the mutual inductance magnetic plate 7. When the common mode voltage generated is 2.5, the output voltage is 30-100V. p-p The voltage of the induced voltage signal is less than 1 , and then the differential amplifier 13 performs signal gain amplification on the differential signal to improve the accuracy of speed detection;

[0064] When the pulley 3 rotates to output the power supply voltage, it also supplies power to the microcontroller. The microcontroller receives the magnetic induction current or magnetic induction voltage, and after analog-to-digital conversion, it outputs a serial pulse signal that matches the magnetic induction voltage or magnetic induction current to the light-emitting module, thereby adjusting the stroboscopic frequency of the light-emitting module.

[0065] When the microcontroller is powered on, the microcontroller starts timing and obtains the average speed within a unit time period to calculate the mileage of the roller skates.

[0066] After the Bluetooth interconnection module is connected to the smart device through Bluetooth, the speed and mileage information output by the microprocessor is synchronously transmitted to the smart terminal.

[0067] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A self-luminous roller skate, comprising a shoe body (1) and a shoe seat (2), wherein the shoe seat (2) is provided with a plurality of pulleys (3) arranged in double rows, characterized in that: A magnetic induction power generation module for accumulating the kinetic potential energy of the pulley (3) and converting it into electrical energy is provided between any one of the pulleys (3) and the shoe seat (2), wherein the magnetic induction power generation module comprises a permanent magnet sleeve (4) and a magnetic induction coil group (5) detachably mounted inside the permanent magnet sleeve (4); The permanent magnetic sleeve (4) is fixedly connected to one side of any pulley (3); the shoe seat (2) is provided with a bridge (6) for detachably connecting to the pulley (3); the magnetic induction coil group (5) is detachably connected to one end of the bridge (6); the bridge (6) and the pulley (3) are connected to the magnetic induction coil group (5) and the permanent magnetic sleeve (4) via a coaxial positioning mechanism; The coaxial positioning mechanism comprises a mutual induction magnetic sheet (7) arranged on the bridge (6), wherein the mutual induction magnetic sheet (7) acts on the permanent magnet sleeve (4) to exert a repulsive force in the direction of the pulley (3), and is used to keep the permanent magnet sleeve (4) 3-5 cm away from the mutual induction magnetic sheet (7) when the permanent magnet sleeve (4) is sleeved outside the magnetic induction coil group (5); The coaxial positioning mechanism further comprises a positioning sleeve (8), the positioning sleeve (8) being an integral structure, one end of the positioning sleeve (8) being formed with a narrow ring (9) embedded in the pulley (3), the permanent magnet sleeve (4) being sleeved on the inner wall of the positioning sleeve (8), and one side of the pulley (3) being provided with an annular groove (10) coaxially arranged therewith, the annular groove (10) being used to accommodate the narrow ring (9) in an interference fit; The mutual induction magnetic sheet is provided with a plurality of spaced-apart magnetic tiles of opposite polarity, and the polarities of adjacent magnetic tiles of opposite polarity facing the permanent magnet sleeve are oppositely arranged to provide a balancing force of mutual attraction or repulsion between the mutual induction magnetic sheet and the permanent magnet sleeve; At least two groups of mutual induction magnetic sheets are provided, one group of mutual induction magnetic sheets is provided at the opening of the positioning sleeve, and the other group of mutual induction magnetic sheets is provided on the side of the magnetic induction power generation module away from the permanent magnet sleeve. A magnetoresistive speed sensor is provided on the bridge frame and is arranged toward the mutual induction magnetic sheets. The magnetoresistive speed sensor collects the magnetic field changes of the mutual induction magnetic sheets.

2. The self-luminous roller skates according to claim 1, characterized in that: Also includes: A light-emitting module is electrically connected to the magnetic induction coil group (5). The light-emitting module is arranged in a ring or array on the shoe body (1). When the pulley (3) rotates, the light-emitting module responds to the change in the rotation speed of the pulley (3) to adjust the stroboscopic frequency of the light-emitting module.

3. The self-luminous roller skates according to claim 1, characterized in that: The magnetic induction power generation module is coupled to a magnetoresistive speed sensor and is used to supply power to the magnetoresistive speed sensor. The magnetoresistive speed sensor comprises: a magnetoresistive sensor (11), a dual-channel operational amplifier (12), a differential amplifier (13), and a single-power silicon transistor comparator (14) electrically connected in sequence; The dual-channel operational amplifier (12) is coupled to the output end of the magnetoresistive sensor (11), receives the induced voltage signal output by the magnetoresistive sensor (11) in response to the magnetic field change, and suppresses and eliminates the voltage of the induced voltage signal to be less than or equal to 1. ; The differential amplifier (13) is connected to the two output ends of the dual-channel operational amplifier (12), receives the differential signal output by the dual-channel operational amplifier (12), and performs signal gain.

4. The self-luminous roller skates according to claim 3, characterized in that: The magnetoresistive sensor (11) uses an integrated chip AA747 based on a double current isolated Wheatstone bridge. When the common mode voltage of the magnetoresistive sensor (11) is half the power supply voltage of the magnetic induction power generation module, the output is 30-100 mV. p-p voltage.

5. The self-luminous roller skates according to claim 4, characterized in that: Also includes A microcontroller is coupled to the magnetoresistive speed sensor and is used to obtain the speed condition and convert the analog-to-digital conversion into speed data; The mileage recording module is coupled to the microcontroller and receives the speed per unit time when the magnetoresistive speed sensor is powered to output the accumulated mileage information of a single use; The Bluetooth interconnection module is coupled to the microcontroller, and in response to the Bluetooth interconnection module being interconnected with the smart device, reads the rotational speed data encoded and decoded in the WeChat controller and transmits it to the smart device.

6. A method for controlling a self-luminous roller skate, applied to the self-luminous roller skate according to claim 5, characterized in that: Its control methods include: Assembly: fix the integrally stamped positioning sleeve (8) in the annular groove (10) on one side of the pulley (3), and then sleeve the pulley (3) on the end of the bridge (6). At this time, the positioning sleeve (8) is sleeved outside the magnetic induction coil group (5), and the permanent magnet sleeve (4) is sleeved outside the magnetic induction coil group (5) through the positioning sleeve (8), and the mutual induction magnetic piece (7) located at the opening of the positioning sleeve (8) exerts a repulsive force on the permanent magnet sleeve (4) in the direction of the pulley (3), and an attractive force opposite to the repulsive force and of the same magnitude, so that the position of the permanent magnet sleeve (4) can be positioned when the permanent magnet sleeve (4) is installed, and the mutual induction magnetic piece (7) provided on the bridge (6) and the mutual induction magnetic piece (7) on the positioning sleeve (8) provide a mutually repulsive force to position the installation position of the positioning sleeve (8); Use: When people wear roller skates to exercise, the pulley (3) rotates under the action of friction with the ground and the bearing inside the pulley (3). At this time, the magnetic induction coil group (5) continuously cuts the magnetic induction lines of the permanent magnetic sleeve (4) when the pulley (3) drives the permanent magnetic sleeve (4) to rotate, thereby generating magnetic induction voltage and magnetic induction current. The power module rectifies the magnetic induction voltage and stabilizes the output power supply voltage. When the pulley (3) rotates and outputs the power supply voltage, the magnetoresistive sensor (11) is powered on and starts to sense the magnetic field change of the mutual inductance magnetic sheet (7) and generate a common mode voltage of 2.5, and outputs 30-100V. p-p The voltage of the induced voltage signal is sent to the dual-channel operational amplifier (12) to suppress and eliminate the voltage of the induced voltage signal which is less than 1 , and then the differential signal is amplified by the differential amplifier (13) to improve the accuracy of the speed detection; The pulley (3) rotates to output the power supply voltage and simultaneously supplies power to the microcontroller. The microcontroller receives the magnetic induction current or magnetic induction voltage, and after analog-to-digital conversion, outputs a serial pulse signal matching the magnetic induction voltage or magnetic induction current to the light-emitting module, thereby adjusting the stroboscopic frequency of the light-emitting module. When the microcontroller is powered on, the microcontroller starts timing and obtains the average speed within a unit time period to calculate the mileage of the roller skates. After the Bluetooth interconnection module is connected to the smart device through Bluetooth, the speed and mileage information output by the microprocessor is synchronously transmitted to the smart terminal.

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