CN116899197A - Self-powered intelligent table tennis bat and using method thereof - Google Patents

Abstract

A self-powered smart table tennis racket and a method of using the same relate to the technical field of smart table tennis rackets, in particular to a self-powered smart table tennis racket and a method of using the same. It includes a racket base and a handle. The racket base is provided with a sponge layer, and a racket rubber layer is provided on the outside of the sponge layer. There is a handle rubber layer on the outside of the handle, and a battery and a controller are provided in the inner cavity of the handle. There are racket energy collection devices on both sides of the racket base. device; there is a handle kinetic energy collection device in the inner cavity of the handle, a handle mechanical energy collection device in the groove on the side wall of the handle, and a touch switch on the outside of the handle; the racket energy collection device, the handle kinetic energy collection device and the handle mechanical energy collection device are all compatible with the device. The controller is connected; the controller is connected to the battery and the sensing unit; the battery is connected to the sensing unit. The piezoelectric film induces charges on both surfaces of the film, and charges are collected through the racket energy collection device, the handle kinetic energy collection device and the handle mechanical energy collection device to form a power supply, which can be self-powered.

Description

Self-powered smart table tennis racket and how to use it

Technical field

The present invention relates to the technical field of smart table tennis rackets, and in particular to a self-powered smart table tennis racket and a method of using the same.

Background technique

Table tennis is known as my country's "national sport" and is a very popular ball sport. Table tennis rackets are the most important equipment. A good table tennis racket can help athletes quickly improve their skills. Currently, existing smart table tennis rackets, such as the utility model patent application number 2021223005429, discloses a smart table tennis racket, which includes a handle, a racket base plate fixedly assembled with one end of the handle, and sponges relatively arranged on both sides of the racket base plate. layer, a rubber layer is laid outside the sponge layer, embedding grooves are provided on both sides of the racket base plate at positions corresponding to the sponge layer, and an installation cavity is provided inside the handle. The smart table tennis racket also includes: a collection module, which is used to obtain table tennis data. Movement data of the ball on the racket substrate; a control circuit board, which is fixedly arranged in the installation cavity and electrically connected to the acquisition module; a power module, which is arranged in the installation cavity and connected to the control module; The circuit board is electrically connected; and a display module is provided on the handle and electrically connected to the control circuit board. This kind of smart table tennis racket cannot be self-powered and needs to be charged, which affects the playing experience to a certain extent. The invention patent application number 2022115229709 discloses a preparation method and application system of a self-powered sensor, which uses a PET film structure with a friction layer and an electrode layer distributed from top to bottom and is pasted and fixed on the rubber layer of a table tennis racket. The quality of the layer is a key factor in evaluating the quality of table tennis rackets. An excessively thin friction layer will affect the life of the racket due to wear. At the same time, pasting a PET film structure with friction layers and electrode layers from top to bottom on the rubber layer will reduce the performance of table tennis rackets. The elasticity of the rubber layer of the racket affects the experience of using the table tennis racket.

Contents of the invention

The object of the present invention is to provide a self-powered smart table tennis racket and a method of using it, so as to induce charges on both surfaces of the film when the piezoelectric film vibrates or is subject to dynamic stress, and collects the charges to form a power supply, which can automatically power supply without affecting the elasticity of the rubber layer.

The self-powered smart table tennis racket provided by the present invention includes a racket base and a handle connected thereto. Sponge layers are symmetrically provided on both sides of the racket base, and a racket rubber layer is provided on the outside of the sponge layer; and a racket rubber layer is provided on the outside of the handle. The handle has a rubber layer, a battery and a controller are provided in the inner cavity of the handle, a racket energy collection device is provided in the grooves on both sides of the racket base, and the racket energy collection device is located between the racket base and the sponge layer; the handle A handle kinetic energy collection device is provided in the inner cavity, a handle mechanical energy collection device is provided in the groove on the side wall of the handle, and a touch switch is provided on the outside of the handle; the racket energy collection device, the handle kinetic energy collection device and the handle mechanical energy collection device are all compatible with The controller is connected; the other end of the controller is connected to the battery and the sensing unit; the battery is connected to the sensing unit. During the first period of time when the table tennis racket is first used, the battery supplies power to the module of the sensing unit; when the battery is not fully charged Before charging, the electric energy generated by the racket energy collection device, the handle kinetic energy collection device and the handle mechanical energy collection device is given priority by the controller to power the module of the sensing unit, and the remaining power is used to charge the battery; when the battery is fully charged, the racket energy collection device , the electric energy generated by the handle kinetic energy collection device and the handle mechanical energy collection device is transmitted through the controller to only power the module of the sensing unit.

Further, the racket energy collection device, the handle kinetic energy collection device and the handle mechanical energy collection device all include one or more layers of piezoelectric films; the piezoelectric films are composed of piezoelectric ceramics, piezoelectric electrets, and piezoelectric homopolymers. It is made of one or more of materials and piezoelectric copolymers; when more than two layers of piezoelectric films are used, each layer of piezoelectric films can be connected in series or in parallel.

Further, conductive layers are provided on both sides of the piezoelectric film. The conductive layer is one or more of silver paste, aluminum silver paste, conductive glue, and conductive polymer. The conductive layer is formed by coating or screen. Any one or more of printing, evaporation, and magnetron sputtering are provided on both sides of the piezoelectric film.

Furthermore, a protective layer is provided on the outside of the outermost conductive layer. The protective layer is formed by coating, screen printing polymer glue, or pasting a film of polymer material with glue on the conductive layer.

Furthermore, the racket energy collection device, the handle kinetic energy collection device and the handle mechanical energy collection device are each provided with two electrodes, a positive electrode and a negative electrode, and the electrodes are used to connect with the controller.

Further, the racket energy collection device is in the form of a sheet, and its overall shape is consistent with the shape of the racket base. It is bonded to the groove on the racket base, and the electrode is introduced into the handle cavity to connect to the controller, mainly Collect the kinetic energy when the table tennis ball hits the racket; the handle kinetic energy collection device is a vibration sensor with a mass block, which is installed in the inner cavity of the handle and mainly collects the kinetic energy of the person when swinging the table tennis racket; the handle mechanical energy collection device It is a fan-shaped sheet structure. During installation, it is fitted into the groove on the side wall of the handle, and the electrode is introduced into the inner cavity of the handle to connect with the controller. It mainly collects the mechanical energy generated by the change in force when a person holds the handle.

Further, the number of the handle kinetic energy collection devices is 2, and the two handle kinetic energy collection devices are connected in parallel, and the two handle kinetic energy collection devices are installed at one end of the handle in the form of a cantilever beam, and the handle kinetic energy collection device is set at one end of the cantilever beam. There are 1 or 2 mass blocks not exceeding 1g, and an elastic base material is provided on one side or in the middle of the handle kinetic energy collection device; the elastic base material is a PET film or PI film with glue on one side or both sides.

A method of using a self-powered smart table tennis racket, including the following steps:

Step 1. Touch the touch switch on the outside of the handle to turn on the controller and battery;

Step 2: When the racket hits the table tennis ball, the energy generated by the collision of the table tennis ball with the racket is converted into electrical energy by the racket energy collection device, and the electrical energy is transmitted to the controller; the kinetic energy generated when a person swings the table tennis racket is converted by the handle kinetic energy collection device into electrical energy and transmit the electrical energy to the controller; the mechanical energy generated by the force change when the person holds the handle is converted into electrical energy by the handle mechanical energy collection device, and the electrical energy is transmitted to the controller;

Step 3: The controller can monitor the battery power and provide power based on the battery power.

Furthermore, in step 3, the controller can monitor the power of the battery and provide power according to the power of the battery: when the battery is not fully charged, a part of the electric energy is transmitted through the controller to charge the battery, and the other part of the electric energy is transmitted through the controller. It supplies power to the module of the sensing unit; when the battery is fully charged, the electric energy is directly supplied to the module of the sensing unit through the controller.

Further, in step 3, the battery supplies power to the sensing unit when the table tennis racket is first used. After the racket energy collection device, the handle kinetic energy collection device and the handle mechanical energy collection device generate electric energy, the controller is switched to the transmission unit. power supply to the sensing unit.

The self-powered smart table tennis racket and its use method provided by the present invention have the following beneficial effects:

1. There is a battery and a controller in the inner cavity of the handle. There are racket energy collection devices in the grooves on both sides of the racket base. The racket energy collection device is located between the racket base and the sponge layer. When the racket hits the table tennis ball, , The energy generated by the collision of the table tennis ball with the racket is converted into electrical energy by the racket energy collection device, and the electrical energy is transmitted to the controller, which then supplies power to the battery and sensing unit modules.

2. There is a handle kinetic energy collection device in the inner cavity of the handle. The kinetic energy generated when a person swings a table tennis racket is converted into electrical energy by the handle kinetic energy collection device, and the electrical energy is transmitted to the controller. After passing through the controller, it is used by the battery and the sensing unit. module power supply.

3. There is a handle mechanical energy collection device in the groove on the side wall of the handle. The mechanical energy generated by the force change when a person holds the handle is converted into electrical energy by the handle mechanical energy collection device, and the electrical energy is transmitted to the controller. After passing through the controller, it is converted into battery and Module power supply for the sensing unit.

4. The racket energy collection device, handle kinetic energy collection device and handle mechanical energy collection device are all connected to the controller. The other end of the controller is connected to the battery and sensing unit. During the initial period of use of the table tennis racket, the battery is the sensing unit. The module supplies power; when the battery is not fully charged, the electric energy generated by the racket energy collection device, the handle kinetic energy collection device and the handle mechanical energy collection device is given priority by the controller to power the module of the sensing unit, and the remaining power is used to charge the battery; when the battery After being fully charged, the electric energy generated by the racket energy collection device, the handle kinetic energy collection device and the handle mechanical energy collection device only supplies power to the module of the sensing unit through the controller.

5. The racket energy collection device, the handle kinetic energy collection device and the handle mechanical energy collection device all include one or more layers of piezoelectric films. When the piezoelectric film vibrates or is subject to dynamic stress, it will induce charges on both surfaces of the film, which can transfer the charges Collects electrical energy to form self-power.

6. A racket energy collection device is provided in the grooves on both sides of the racket base. A handle kinetic energy collection device is provided in the inner cavity of the handle. A handle mechanical energy collection device is provided in the groove on the side wall of the handle. The racket energy collection device and the handle kinetic energy collection device are provided. The mechanical energy collection device of the device and handle does not affect the elasticity of the rubber layer and the experience of using the table tennis racket.

In the self-powered smart table tennis racket and its use method provided by the present invention, the racket energy collection device, the handle kinetic energy collection device and the handle mechanical energy collection device all include one or more layers of piezoelectric films. The piezoelectric films vibrate or are subject to dynamic stress. Charges will be induced on both surfaces of the film, which can be collected to form electrical energy and can be self-powered. At the same time, the conductive material forms a conductive layer, which transmits electrical energy to the battery and sensing unit modules through the controller. The protective layer can protect the conductive layer from being oxidized and damaged by wear and tear, and does not affect the elasticity of the rubber layer and the experience of using the table tennis racket.

Description of the drawings

The drawings disclose specific embodiments of the present invention, wherein:

Figure 1 is a schematic structural diagram of the present invention;

Figure 2 is an energy collection diagram of the present invention;

Figure 3 is a schematic structural diagram of the racket energy collection device of the present invention;

Figure 4 is a schematic structural diagram of the handle kinetic energy collection device of the present invention;

Figure 5 is a schematic structural diagram of a racket energy collection device with a layer of piezoelectric film according to the present invention;

Figure 6 is a schematic structural diagram of a racket energy collection device with two layers of piezoelectric films of the present invention;

Figure 7 is a schematic structural diagram of a handle kinetic energy collection device with a layer of piezoelectric film according to the present invention;

Figure 8 is a schematic structural diagram of a handle kinetic energy collection device with two layers of piezoelectric films of the present invention;

Figure 9 is a schematic structural diagram of a handle mechanical energy collection device with a layer of piezoelectric film according to the present invention;

Figure 10 is a schematic structural diagram of a handle mechanical energy collection device with two layers of piezoelectric films of the present invention;

Reference signs: 1. Racket base; 11. Sponge layer; 12. Racket rubber layer; 2. Handle; 21. Handle rubber layer; 22. Battery; 23. Controller; 24. Touch switch; 3. Racket energy collection device ; 4. Handle kinetic energy collection device; 41. Mass block; 42. Elastic substrate; 5. Handle mechanical energy collection device; 6. Piezoelectric film; 7. Conductive layer; 8. Protective layer; 9. Electrode.

Detailed ways

As shown in Figures 1-10, the self-powered smart table tennis racket provided by the present invention includes a racket base 1 and a handle 2 connected to it. A sponge layer 11 is symmetrically provided on both sides of the racket base 1, and a sponge layer 11 is provided on the outside of the sponge layer 11. The racket rubber layer 12 is provided with a handle rubber layer 21 on the outside of the handle 2, a battery 22 and a controller 23 are provided in the inner cavity of the handle 2, a racket energy collection device 3 is provided in the grooves on both sides of the racket base 1, and the racket The energy collection device 3 is located between the racket base 1 and the sponge layer 11; a handle kinetic energy collection device 4 is provided in the inner cavity of the handle 2, a handle mechanical energy collection device 5 is provided in the groove on the side wall of the handle 2, and a handle kinetic energy collection device 5 is provided on the outside of the handle 2. Touch switch 24; racket energy collection device 3, handle kinetic energy collection device 4 and handle mechanical energy collection device 5 are all connected to the controller 23; the other end of the controller 23 is connected to the battery 22 and the sensing unit; the battery 22 is connected to the sensing unit. During a period of time when the table tennis racket is first used, the battery 22 supplies power to the module of the sensing unit; when the battery 22 is not fully charged, the electric energy transmitted by the controller 23 gives priority to the module of the sensing unit, and the remaining power is used for the battery 22 Charging; when the battery 22 is fully charged, the electric energy is transmitted through the controller 23 to only supply power to the module of the sensing unit.

Example 1

When using the present invention, first touch the touch switch 24 on the outside of the handle 2, and the touch switch 24 turns on the controller 23 and the battery 22. Then, when the table tennis racket hits the table tennis ball, the energy generated by the table tennis racket collision is converted into electrical energy by the racket energy collection device 3, and the electrical energy is transmitted to the controller 23; the kinetic energy generated when a person swings the table tennis racket is generated by the handle kinetic energy The collection device 4 converts the electric energy into electrical energy and transmits the electric energy to the controller 23 ; the mechanical energy generated by the force change when the person holds the handle 2 is converted into electric energy by the handle mechanical energy collection device 5 and transmits the electric energy to the controller 23 . Finally, the controller 23 can monitor the power of the battery 22 and provide power according to the power of the battery 22 . When the battery 22 is not fully charged, part of the electric energy is transmitted through the controller 23 to charge the battery 22, and the other part of the electric energy is transmitted through the controller 23 to power the module of the sensing unit; when the battery 22 is fully charged, the controller 23 The electrical energy is directly supplied to the module of the sensing unit. The battery 22 supplies power to the sensing unit when the table tennis racket is first used. After the racket energy collecting device 3, the handle kinetic energy collecting device 4 and the handle mechanical energy collecting device 5 generate electric energy, it switches to transmitting electric energy through the controller 23. power supply to the sensing unit.

As shown in Figure 5-10, the racket energy collection device 3, the handle kinetic energy collection device 4 and the handle mechanical energy collection device 5 all include one or more layers of piezoelectric film 6; the piezoelectric film 6 is composed of piezoelectric ceramics, piezoelectric resident It is made of one or more of polar bodies, piezoelectric homopolymers, and piezoelectric copolymers; when more than two layers of piezoelectric films 6 are used, each layer of piezoelectric films 6 can be connected in series or in parallel. A conductive layer 7 is provided on both sides of the piezoelectric film 6. The conductive layer 7 is one or more of silver paste, aluminum silver paste, conductive glue, and conductive polymer. The conductive layer 7 is made by coating, screen printing, Any one or more of evaporation and magnetron sputtering are provided on both sides of the piezoelectric film 6 . A protective layer 8 is provided on the outside of the outermost conductive layer 7. The protective layer 8 is formed by coating, screen printing polymer glue, or pasting a film of polymer material with glue on the conductive layer 7. The racket energy collection device 3 , the handle kinetic energy collection device 4 and the handle mechanical energy collection device 5 are each provided with two electrodes 9 , a positive electrode and a negative electrode, for connection with the controller 23 . When the piezoelectric film 6 vibrates or is subjected to dynamic stress, charges will be induced on both surfaces of the film, and the charges can be collected to form electrical energy and can be self-powered. The conductive material forms the conductive layer 7, which transmits electrical energy to the battery 22 and the module of the sensing unit through the controller 23. The protective layer 8 can protect the conductive layer from being oxidized and damaged by wear and tear, and does not affect the elasticity of the rubber layer, and does not affect the use experience of the table tennis racket.

As shown in Figure 5-6, the racket energy collection device 3 is in the shape of a sheet, and its overall shape is consistent with the shape of the racket base 1. It is bonded to the groove on the racket base 1, and the electrode 9 is introduced into the handle cavity. It is connected with the controller 23 and mainly collects the kinetic energy of the table tennis ball when it hits the racket. As shown in Figures 7-8, the handle kinetic energy collection device 4 is a vibration sensor with a mass block 41, which is installed in the inner cavity of the handle and mainly collects the kinetic energy of a person when swinging a table tennis racket. As shown in Figure 9-10, the mechanical energy collection device 5 of the handle has a fan-shaped sheet structure. During installation, it is fitted into the groove on the side wall of the handle, and the electrode 9 is introduced into the inner cavity of the handle 2 and connected to the controller 23 , mainly collects the mechanical energy generated by changes in force when a person holds the handle 2.

As shown in Figure 7-8, the number of handle kinetic energy collection devices 4 is 2. The two handle kinetic energy collection devices 4 are connected in parallel, and the two handle kinetic energy collection devices 4 are installed in the form of cantilever beams at one end of the handle 2. The kinetic energy collection device 4 is provided with one or two mass blocks 41 not exceeding 1g at one end of the cantilever beam. An elastic base material 42 is provided on one side or in the middle of the handle kinetic energy collection device 4; the elastic base material 42 is glued on one side. PET film or PI film. The thickness of the elastic base material 4 must match the weight of the mass block 41 to ensure that the handle kinetic energy collection device generates sufficient vibration during the hitting process. The elastic base material 42 provides support for the handle kinetic energy collection device 4 and can ensure that the handle kinetic energy collection device 4 maintains continuous vibration after the handle kinetic energy collection device 4 receives vibration.

Example 2

How to use a self-powered smart table tennis racket includes the following steps:

Step 1. Touch the touch switch 24 on the outside of the handle 2. Touch the switch 24 to turn on the controller 23 and the battery 22;

Step 2, when the racket hits the table tennis ball, the energy generated by the collision of the table tennis ball with the racket is converted into electrical energy by the racket energy collecting device 3, and the electrical energy is transmitted to the controller 23; the kinetic energy generated when a person swings the table tennis racket is collected by the kinetic energy of the handle. The device 4 converts it into electrical energy and transmits the electrical energy to the controller 23; the mechanical energy generated by the force change when the person holds the handle 2 is converted into electrical energy by the handle mechanical energy collection device 5 and transmits the electrical energy to the controller 23;

In step 3, the controller 23 can monitor the power of the battery 22 and provide power according to the power of the battery 22.

Example 3

How to use a self-powered smart table tennis racket includes the following steps:

Step 1. Touch the touch switch 24 on the outside of the handle 2. Touch the switch 24 to turn on the controller 23 and the battery 22;

Step 2, when the racket hits the table tennis ball, the energy generated by the collision of the table tennis ball with the racket is converted into electrical energy by the racket energy collecting device 3, and the electrical energy is transmitted to the controller 23; the kinetic energy generated when a person swings the table tennis racket is collected by the kinetic energy of the handle. The device 4 converts it into electrical energy and transmits the electrical energy to the controller 23; the mechanical energy generated by the force change when the person holds the handle 2 is converted into electrical energy by the handle mechanical energy collection device 5 and transmits the electrical energy to the controller 23;

Step 3: The controller 23 can monitor the power of the battery 22 and provide power according to the power of the battery 22: when the battery 22 is not fully charged, a part of the electric energy is transmitted through the controller 23 to charge the battery 22. The other part supplies power to the module of the sensing unit; when the battery 22 is fully charged, the electric energy is directly supplied to the module of the sensing unit via the controller 23 . The battery 22 supplies power to the sensing unit when the table tennis racket is first used. After the racket energy collecting device 3, the handle kinetic energy collecting device 4 and the handle mechanical energy collecting device 5 generate electric energy, it switches to transmitting electric energy through the controller 23. power supply to the sensing unit.

After testing, when the table tennis ball hits the racket base 1 at a speed of 10m/s, the racket energy collection device 3 (capacitance 5600pF) can generate a charge of 5000pC. Each handle kinetic energy collection device 4 (capacitance 270pF, double-layer piezoelectric film, A mass block of 0.8g) can generate a charge of 20,000pC, and two handle kinetic energy collection devices 4 connected in parallel can generate a charge of 40,000pC. During normal exercise, the mechanical energy collection device 5 (capacitance 5900pF) of the handle brought about by the change in the strength of the hand holding the racket when adjusting the racket posture can collect a charge of 2460pC. That is, when the table tennis ball hits the racket base 1 at a speed of 10m/s, the racket energy collection device 3, the two handle kinetic energy collection devices 4 and the handle mechanical energy collection device 5 generate a total charge of 47460pC. These 47460pC charges are transmitted through the controller 23 to charge part of the electric energy to the battery 22, and the other part of the electric energy transmitted through the controller 23 is used to power the module of the sensing unit.

Claims (10)

1. A self-powered smart table tennis racket, including a racket base (1) and a handle (2) connected to it. A sponge layer (11) is symmetrically arranged on both sides of the racket base (1). The sponge layer (11) A racket rubber layer (12) is provided on the outside; a handle rubber layer (21) is provided on the outside of the handle (2), and a battery (22) and a controller (23) are provided in the inner cavity of the handle (2). Its characteristics Yes, a racket energy collection device (3) is provided in the grooves on both sides of the racket base (1), and the racket energy collection device (3) is located between the racket base (1) and the sponge layer (11); A handle kinetic energy collection device (4) is provided in the inner cavity of the handle (2), a handle mechanical energy collection device (5) is provided in the groove on the side wall of the handle (2), and a touch switch (24) is provided on the outside of the handle (2) ; The racket energy collection device (3), the handle kinetic energy collection device (4) and the handle mechanical energy collection device (5) are all connected to the controller (23); the other end of the controller (23) is connected to the battery (22) and the sensing unit; the battery (22) is connected to the sensing unit. During a period of time when the table tennis racket is first used, the battery (22) supplies power to the module of the sensing unit; when the battery (22) is not fully charged, it The controller (23) transmits electric energy to supply power to the module of the sensing unit first, and the remaining electricity is used to charge the battery (22); when the battery (22) is fully charged, the electric energy transmitted by the controller (23) is only for the sensing unit. module power supply. 2. The self-powered smart table tennis racket according to claim 1, characterized in that the racket energy collection device (3), the handle kinetic energy collection device (4) and the handle mechanical energy collection device (5) each include one or two layers. There are more than one layer of piezoelectric film (6); the piezoelectric film (6) is made of one or more of piezoelectric ceramics, piezoelectric electrets, piezoelectric homopolymers, and piezoelectric copolymers; when When more than two layers of piezoelectric films (6) are used, each layer of piezoelectric films (6) can be connected in series or in parallel. 3. The self-powered smart table tennis racket according to claim 2, characterized in that conductive layers (7) are provided on both sides of the piezoelectric film (6), and the conductive layers (7) are silver paste, One or more of aluminum silver paste, conductive glue, and conductive polymer, and the conductive layer (7) is provided on the piezoelectric layer through any one or more of coating, screen printing, evaporation, and magnetron sputtering. Both sides of the film (6). 4. The self-powered smart table tennis racket according to claim 3, characterized in that a protective layer (8) is provided on the outside of the outermost conductive layer (7), and the protective layer (8) is made of coating, It is formed by screen printing polymer glue or pasting a film of polymer material with glue on the conductive layer (7). 5. The self-powered smart table tennis racket according to claim 1, characterized in that the racket energy collection device (3), handle kinetic energy collection device (4) and handle mechanical energy collection device (5) are each provided with a positive electrode and There are two electrodes (9) in one negative electrode, and the electrode (9) is used to connect with the controller (23). 6. The self-powered smart table tennis racket according to claim 5, characterized in that the racket energy collection device (3) is sheet-shaped, the overall shape is consistent with the shape of the racket base (1), and it is bonded to the racket. into the groove on the base body (1), and introduce the electrode (9) into the handle cavity to connect with the controller (23); the handle kinetic energy collection device (4) is a vibration sensor with a mass block (41) , which is installed in the inner cavity of the handle; the handle mechanical energy collection device (5) has a fan-shaped sheet structure. During installation, it is fitted into the groove on the side wall of the handle, and the electrode (9) is introduced into the handle (2 ) is connected to the controller (23) in the inner cavity. 7. The self-powered smart table tennis racket according to claim 6, characterized in that the number of the handle kinetic energy collection devices (4) is 2, the 2 handle kinetic energy collection devices (4) are connected in parallel, and the 2 handle kinetic energy collection devices (4) are connected in parallel. The collection devices (4) are all installed in the form of cantilever beams at one end of the handle (2). The handle kinetic energy collection device (4) is provided with one or two mass blocks (41) not exceeding 1g at one end of the cantilever beam. The handle kinetic energy An elastic base material (42) is provided on one side or in the middle of the collection device (4); the elastic base material (42) is a PET film or PI film with glue on one or both sides. 8. The method of using the self-powered smart table tennis racket according to claim 1, characterized by comprising the following steps: Step 1. Touch the touch switch (24) on the outside of the handle (2). Touch the switch (24) to turn on the controller (23) and battery (22); Step 2, when the racket hits the table tennis ball, the energy generated by the collision of the table tennis ball with the racket is converted into electrical energy by the racket energy collecting device (3), and the electrical energy is transmitted to the controller (23); the kinetic energy generated when a person swings a table tennis racket The handle kinetic energy collection device (4) converts the electric energy into electrical energy, and transmits the electric energy to the controller (23); the mechanical energy generated by the force change when the person holds the handle (2) is converted into electric energy by the handle mechanical energy collection device (5), and Electrical energy is transmitted to the controller (23); Step 3: The controller (23) can monitor the power of the battery (22) and provide power according to the power of the battery (22). 9. The method of using the self-powered smart table tennis racket according to claim 8, characterized in that in step 3, the controller (23) can monitor the power of the battery (22), and perform the operation according to the power of the battery (22). Power supply: When the battery (22) is not fully charged, part of the electric energy is transmitted through the controller (23) to charge the battery (22), and the other part of the electric energy is transmitted through the controller (23) to power the module of the sensing unit; when When the battery (22) is fully charged, the electric energy is directly supplied to the module of the sensing unit via the controller (23). 10. The method of using the self-powered smart table tennis racket according to claim 8, characterized in that in step 3, the battery (22) supplies power to the sensing unit when the table tennis racket is first used, and the energy of the racket is collected after the racket energy is collected. After the device (3), the handle kinetic energy collection device (4) and the handle mechanical energy collection device (5) generate electrical energy, they switch to transmitting electrical energy through the controller (23) to power the sensing unit.