Laser wireless charging active capacitance pen and laser wireless charging method thereof

Abstract

The invention discloses a laser wireless charging active capacitance pen and a laser wireless charging method thereof, and relates to the technical field of active capacitance pens. The capacitive stylus comprises a capacitive stylus body and a nib pressure sensing module, the nib pressure sensing module is installed in the capacitive stylus body, when an MEMS micromirror array is flush with a multi-junction photovoltaic chip, laser can be conveniently guided into the multi-junction photovoltaic chip through an embedded Fresnel lens, so that the received laser is converted into electric energy, a signal is fed back through a hollow retroreflector, and the capacitive stylus is used for detecting the voltage of the capacitive stylus. The emitter is guided to calibrate a light path, the charging temperature in the capacitance pen body can be conveniently detected through the dual-redundancy temperature sensor, through the dual-mode energy storage setting of the super capacitor and the lithium battery, power is supplied to a pen point circuit preferentially when laser is received, the power is automatically switched to the battery to supply power when no laser is input, and the switching delay is smaller than one millisecond. When the temperature is too high, incident laser can be deflected by more than five degrees within one hundred microseconds through the MEMS micromirror array, so that safety control is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of active capacitive pens, and in particular to a laser wireless charging active capacitive pen and a laser wireless charging method thereof. Background Art

[0002] An active capacitive stylus is a high-precision input device that interacts with a touchscreen through built-in circuitry. Compared to passive capacitive pens (which only simulate finger touch), it offers advantages such as pressure sensitivity, tilt detection, and low latency. It is widely used in areas such as drawing, note-taking, and design.

[0003] Existing capacitive pen charging technology has the following drawbacks: contact charging requires insertion into an interface, causing wear (plug-in life ≤ 500 times); electromagnetic induction charging has a short charging distance (≤ 5mm), requiring placement on a specific charging dock, low energy conversion efficiency (approximately 60%), and the metal parts of the pen body are prone to eddy current heating; solar charging relies on ambient light intensity and is almost ineffective indoors (<200 lux), resulting in a lack of a charging technology with high directionality (divergence angle < 0.1°), long-distance transmission (up to several meters), high efficiency (photoelectric conversion > 40%), and safe control. Summary of the Invention

[0004] To solve the above problems, the present invention provides a laser wireless charging active capacitive pen and a laser wireless charging method thereof, so as to solve the problem that charging technology lacks high directionality, long-distance transmission, high efficiency and safe control.

[0005] To achieve the above-mentioned object, the present invention specifically adopts the following technical solutions: a laser wireless charging active capacitive stylus, comprising a capacitive stylus body and a pen tip pressure sensing module, wherein the pen tip pressure sensing module is installed inside the capacitive stylus body and extends out of the right end of the capacitive stylus body;

[0006] It also includes a laser conversion module, a dual-mode energy storage module, an overheating protection module, a clip and a conversion protection mechanism. The laser conversion module is arranged at the left end of the capacitive pen body, and is used to calibrate the laser and receive the laser and convert it into electrical energy. The dual-mode energy storage module is arranged on the right side of the laser conversion module, and is used to open and close the capacitive pen body, provide power prompts, receive and store electrical energy. The overheating protection module is arranged in the laser conversion module, and is used to detect temperature and adjust the light receiving angle of the laser conversion module. The clip is arranged at the left end of the capacitive pen body. The conversion protection mechanism is detachably arranged on the left side of the capacitive pen body, and is used to perform dust-proof treatment on the laser conversion module. The clip and the conversion protection mechanism are rotatable clip settings.

[0007] A main control chip module is arranged in the middle of the capacitive stylus body.

[0008] The dual-mode energy storage module includes a supercapacitor and a lithium battery. The lithium battery is installed inside the capacitive pen body and is arranged on the right side of the laser conversion module. A supercapacitor is installed inside the capacitive pen body near the left side of the lithium battery.

[0009] It also includes a power switch, a ring light strip and a vibration motor. The vibration motor is installed inside the capacitive pen body, and the vibration motor is arranged on the left side of the supercapacitor. The power switch is installed on the outer wall of the capacitive pen body near the outside of the lithium battery, and the ring light strip is installed on the outer wall of the capacitive pen body near the left side of the power switch.

[0010] The laser conversion module includes a multi-junction photovoltaic chip, an embedded Fresnel lens and a hollow retroreflector. The multi-junction photovoltaic chip is installed inside the capacitive pen body, and the multi-junction photovoltaic chip is arranged on the left side of the dual-mode energy storage module. A hollow retroreflector is installed inside the capacitive pen body near the left side of the multi-junction photovoltaic chip, and an embedded Fresnel lens is embedded on the inner wall of the left end of the capacitive pen body.

[0011] The overheat protection module includes a dual-redundant temperature sensor and a MEMS micromirror array. The dual-redundant temperature sensor is arranged outside the laser conversion module, and a MEMS micromirror array is installed inside the capacitive pen body near the dual-redundant temperature sensor.

[0012] The clamping member includes a positioning rod and a limiting hole. Two positioning rods are provided. The two positioning rods are fixedly connected to the left end of the capacitive stylus body. The two positioning rods are symmetrically arranged. The outer wall of the positioning rod is provided with a limiting hole.

[0013] The conversion protection mechanism includes an elastic rope, a placement seat, an embedding hole, a protective pad, a clamping hole, a mounting hole, a positioning hole, a moving rod, a tension spring and an indicator bar, one end of the elastic rope is fixedly connected to one side of the outer wall of the capacitive pen body, the other end of the elastic rope is fixedly connected to the placement seat, the right side of the placement seat is provided with an embedding hole, the inside of the embedding hole is slidably connected with a protective pad, the outer wall of the protective pad is provided with two clamping holes, and the two clamping holes are symmetrically arranged, the left side of the placement seat is provided with a mounting hole, the right side of the placement seat is provided with two positioning holes near the outside of the embedding hole, the inner wall of the mounting hole is slidably connected to two moving rods, the two moving rods pass through the inner wall of the mounting hole and extend into the inside of the embedding hole, the outer wall of the moving rod is sleeved with a tension spring, one end of the tension spring is fixedly connected to one end of the moving rod, and the other end is fixedly connected to the inner wall of the mounting hole, the outer wall of the placement seat is fixedly connected to a plurality of indicator bars, and the plurality of indicator bars are equidistantly arranged in a circular array.

[0014] It also includes a rotating seat, a connecting rod, a guide block, a movable hole, a limiting block and a handle. The rotating seat is rotatably connected to the inner wall of the mounting hole. Two connecting rods are fixedly connected to the inner wall of the rotating seat. The two connecting rods are symmetrically arranged. One end of the connecting rod is fixedly connected to the guide block near the inside of the mounting hole. A movable hole is opened on one side of the guide block. A limiting block is fixedly connected to the other side of the guide block. A handle is embedded on one side of the rotating seat.

[0015] A laser wireless charging method for an active capacitive pen laser wireless charging comprises the following steps:

[0016] S1. Calibrate and receive laser light: When the MEMS micromirror array is aligned with the multi-junction photovoltaic chip, the embedded Fresnel lens facilitates the introduction of laser light into the multi-junction photovoltaic chip, converting the received laser light into electrical energy. The signal is then fed back through the hollow retroreflector to guide the transmitter to calibrate the optical path.

[0017] S2, Energy Management Unit: Through the dual-mode energy storage setting of supercapacitor and lithium battery, it prioritizes powering the pen tip circuit when receiving laser light, and automatically switches to battery power when there is no laser input, with a switching delay of less than one millisecond;

[0018] S3. Overheat protection: Dual redundant temperature sensors are used to detect the internal charging temperature of the capacitive stylus. When the temperature is too high, the MEMS micromirror array can deflect the incident laser by more than five degrees within 100 microseconds, thereby achieving safety control.

[0019] S4. Dust protection: When the limiting block passes through the limiting hole, it is convenient to fix the placement seat on the outside of the embedded Fresnel lens. At this time, the protective pad covers one side of the embedded Fresnel lens to protect the embedded Fresnel lens from dust and prevent dust from affecting the embedded Fresnel lens from receiving laser.

[0020] The beneficial effects of the present invention are as follows:

[0021] When the MEMS micromirror array is flush with the multi-junction photovoltaic chip, the present invention facilitates the introduction of laser light into the multi-junction photovoltaic chip through an embedded Fresnel lens, thereby converting the received laser light into electrical energy. The hollow retroreflector feeds back the signal to guide the transmitter to calibrate the optical path. The dual-redundant temperature sensors facilitate the detection of the charging temperature inside the capacitive pen body. The dual-mode energy storage setting of the supercapacitor and lithium battery enables the pen tip circuit to be powered first when receiving laser light, and automatically switches to battery power when there is no laser input. The switching delay is less than one millisecond. When the temperature is too high, the MEMS micromirror array can deflect the incident laser light by more than five degrees within one hundred microseconds, thereby achieving safety control.

[0022] According to the present invention, when the handle is aligned with the current indicator bar, the guide block drives the limiting block to be clamped inside the limiting hole, thereby fixing the placement seat to the left end of the capacitive pen body. At this time, due to the action of the tension spring, the moving rod is embedded in the clamping hole, thereby restricting the protective pad, and the protective pad covers one side of the embedded Fresnel lens, thereby providing dust protection for the embedded Fresnel lens to prevent dust from affecting the embedded Fresnel lens from receiving lasers. When the handle is rotated forty-five degrees counterclockwise, the limiting block is separated from the limiting hole, making it easy to disassemble the placement seat and facilitate the normal use of the embedded Fresnel lens. When the handle is rotated forty-five degrees counterclockwise again, the guide block drives the moving hole to pass through the outer wall of the moving rod, and the two sides of the guide block drive the moving rod to move toward the outer wall of the placement seat, thereby separating the moving rod from the clamping hole, thereby releasing the restriction on the protective pad, and facilitating the user to disassemble and clean the protective pad. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0024] Figure 2 is a cross-sectional view of the capacitive stylus body of the present invention;

[0025] Figure 3 This is a front view of the capacitive stylus body of the present invention;

[0026] Figure 4 It is an exploded view of the placement seat and the rotating seat of the present invention;

[0027] Figure 5 is an exploded view of the protective pad of the present invention;

[0028] Figure 6 This is an exploded view of the placement seat of the present invention;

[0029] Figure 7 This is a partial cross-sectional view of the placement seat of the present invention;

[0030] Figure 8 This is a diagram of the active capacitive pen laser wireless charging method of the present invention.

[0031] Reference numerals: 1, capacitive pen body; 2, pen tip pressure sensing module;

[0032] 3. Laser conversion module; 301. Multi-junction photovoltaic chip; 302. Embedded Fresnel lens; 303. Hollow retroreflector;

[0033] 4. Dual-mode energy storage module; 401. Supercapacitor; 402. Lithium battery; 403. Power switch; 404. Ring light strip; 405. Vibration motor;

[0034] 5. Overheat protection module; 501. Dual redundant temperature sensor; 502. MEMS micromirror array;

[0035] 6. Main control chip module;

[0036] 7. Snap-fitting member; 701. Positioning rod; 702. Restriction hole;

[0037] 8. Conversion protection mechanism; 801. Elastic rope; 802. Placement seat; 803. Embedding hole; 804. Protection pad; 805. Snap-in hole; 806. Mounting hole; 807. Positioning hole; 808. Moving rod; 809. Tension spring; 810. Rotating seat; 811. Connecting rod; 812. Guide block; 813. Moving hole; 814. Limiting block; 815. Handle; 816. Indicator bar. DETAILED DESCRIPTION

[0038] The present invention will be further described below in conjunction with specific embodiments. However, people familiar with the art should understand that the detailed description given here in conjunction with the drawings is for better explanation. The structure of the present invention necessarily exceeds these limited embodiments. For some equivalent replacement solutions or common means, they will not be described in detail herein, but they still fall within the scope of protection of this application.

[0039] Example 1, below in conjunction with the attached Figure 1 -Attached Figure 7 The present invention is further described.

[0040] A laser wireless charging active capacitive stylus comprises a capacitive stylus body 1 and a pen tip pressure sensing module 2. The pen tip pressure sensing module 2 is installed inside the capacitive stylus body 1 and extends out of the right end of the capacitive stylus body 1.

[0041] It also includes a laser conversion module 3, a dual-mode energy storage module 4, an overheating protection module 5, a clamping part 7 and a conversion protection mechanism 8. The laser conversion module 3 is arranged at the left end of the capacitive pen body 1, and is used to calibrate the laser and receive the laser and convert it into electrical energy. The dual-mode energy storage module 4 is arranged on the right side of the laser conversion module 3, and is used to open and close the capacitive pen body 1, provide power prompts, receive and store electrical energy. The overheating protection module 5 is arranged in the laser conversion module 3, and is used to detect temperature and adjust the light receiving angle of the laser conversion module 3. The clamping part 7 is arranged at the left end of the capacitive pen body 1. The conversion protection mechanism 8 is detachably arranged on the left side of the capacitive pen body 1, and is used to perform dust-proof treatment on the laser conversion module 3. The clamping part 7 and the conversion protection mechanism 8 are rotatable. Dynamic card connection setting; specifically, through the laser conversion module 3, the received laser is converted into electrical energy and the transmitter is guided to calibrate the optical path. Through the dual-mode energy storage module 4, the pen tip circuit is powered first when receiving the laser, and it automatically switches to battery power supply when there is no laser input. The switching delay is less than one millisecond. In conjunction with the overheating protection module 5, it is convenient to detect the charging temperature inside the capacitive pen body 1. When the temperature is too high, the incident laser can be deflected by more than five degrees within one hundred microseconds, thereby achieving safety control. Through the card connector 7, the conversion protection mechanism 8 is conveniently fixed and restricted to the left end of the capacitive pen body 1, so that the mechanism of the laser conversion module 3 exposed at the left end of the capacitive pen body 1 can be protected from dust to prevent dust from affecting the laser conversion module 3 from receiving the laser.

[0042] A main control chip module 6 is provided in the middle of the capacitive stylus body 1 ; specifically, the main control chip module 6 facilitates processing of signal instructions received by the pen tip pressure sensing module 2 when in contact with an external device.

[0043] The dual-mode energy storage module 4 includes a supercapacitor 401 and a lithium battery 402. The lithium battery 402 is installed inside the capacitive pen body 1, and the lithium battery 402 is arranged on the right side of the laser conversion module 3. The supercapacitor 401 is installed inside the capacitive pen body 1 near the left side of the lithium battery 402; specifically, through the dual-mode energy storage setting of the supercapacitor 401 and the lithium battery 402, the pen tip circuit is powered first when receiving laser, and automatically switches to battery power when there is no laser input, and the switching delay is less than one millisecond.

[0044] It also includes a power switch 403, a ring light strip 404 and a vibration motor 405. The vibration motor 405 is installed inside the capacitive pen body 1, and the vibration motor 405 is arranged on the left side of the supercapacitor 401. The power switch 403 is installed on the outer wall of the capacitive pen body 1 near the outside of the lithium battery 402, and the ring light strip 404 is installed on the outer wall of the capacitive pen body 1 near the left side of the power switch 403; specifically, the power switch 403 can be used to control the capacitive pen body 1 to be turned on or off. During laser charging, the charging signal is transmitted to the vibration motor 405 through the main control chip module 6. The vibration motor 405 vibrates briefly to indicate that charging is in progress or charging is completed, and the charging status is displayed through the ring light strip 404.

[0045] The laser conversion module 3 includes a multi-junction photovoltaic chip 301, an embedded Fresnel lens 302 and a hollow retroreflector 303. The multi-junction photovoltaic chip 301 is installed inside the capacitive pen body 1, and the multi-junction photovoltaic chip 301 is arranged on the left side of the dual-mode energy storage module 4. A hollow retroreflector 303 is installed inside the capacitive pen body 1 near the left side of the multi-junction photovoltaic chip 301, and an embedded Fresnel lens 302 is embedded in the inner wall of the left end of the capacitive pen body 1; specifically, the embedded Fresnel lens 302 facilitates the introduction of laser light into the multi-junction photovoltaic chip 301, thereby converting the received laser light into electrical energy, and feedback signals are fed back through the hollow retroreflector 303 to guide the transmitter to calibrate the optical path.

[0046] The overheat protection module 5 includes a dual-redundant temperature sensor 501 and a MEMS micromirror array 502. The dual-redundant temperature sensor 501 is arranged on the outside of the laser conversion module 3, and a MEMS micromirror array 502 is installed on the side of the capacitive pen body 1 close to the dual-redundant temperature sensor 501. Specifically, when the temperature is too high, the MEMS micromirror array 502 can deflect the incident laser by more than five degrees within one hundred microseconds, thereby achieving safety control.

[0047] The clamping part 7 includes a positioning rod 701 and a limiting hole 702. Two positioning rods 701 are provided. The two positioning rods 701 are fixedly connected to the left end of the capacitive pen body 1. The two positioning rods 701 are symmetrically arranged, and a limiting hole 702 is opened on the outer wall of the positioning rod 701; specifically, through the positioning rod 701 and the limiting hole 702, it is convenient to connect with the conversion protection mechanism 8, which facilitates the subsequent dust-proof treatment of the embedded Fresnel lens 302.

[0048] The conversion protection mechanism 8 includes an elastic rope 801, a placement seat 802, an embedding hole 803, a protective pad 804, a snap-in hole 805, a mounting hole 806, a positioning hole 807, a moving rod 808, a tension spring 809 and an indicator bar 816. One end of the elastic rope 801 is fixedly connected to one side of the outer wall of the capacitive stylus body 1, and the other end of the elastic rope 801 is fixedly connected to the placement seat 802. The placement seat 802 has an embedding hole 803 on the right side, and the protective pad 804 is slidably connected inside the embedding hole 803. The outer wall of the protective pad 804 has two snap-in holes 805, and the two snap-in holes 805 are symmetrically arranged. The placement seat 802 has a mounting hole 806 on the left side, and the placement seat 802 has a right side close to the embedding hole 80 Two positioning holes 807 are provided on the outer side. Two movable rods 808 are slidably connected to the inner wall of the mounting hole 806. The two movable rods 808 penetrate the inner wall of the mounting hole 806 and extend into the interior of the embedding hole 803. A tension spring 809 is sleeved on the outer wall of the movable rod 808. One end of the tension spring 809 is fixedly connected to one end of the movable rod 808, and the other end is fixedly connected to the inner wall of the mounting hole 806. A plurality of indicator bars 816 are fixedly connected to the outer wall of the placement seat 802. The plurality of indicator bars 816 are equidistantly arranged in a circular array. Specifically, the plurality of indicator bars 816 can enable the user to accurately control the insertion or separation of the movable rod 808 and the engaging hole 805, thereby controlling the state of the protective pad 804.

[0049] The invention also includes a rotating seat 810, a connecting rod 811, a guide block 812, a movable hole 813, a limiting block 814 and a handle 815. The rotating seat 810 is rotatably connected to the inner wall of the mounting hole 806. The inner wall of the rotating seat 810 is fixedly connected with two connecting rods 811. The two connecting rods 811 are symmetrically arranged. One end of the connecting rod 811 is fixedly connected to the inside of the mounting hole 806 with the guide block 812. A movable hole 813 is opened on one side of the guide block 812. The other side of the guide block 812 is fixedly connected to the limiting block 814. The rotating seat 81 0 is embedded with a handle 815 on one side; specifically, when the handle 815 is aligned with the current indicator bar 816, the guide block 812 drives the limiting block 814 to be engaged with the inside of the limiting hole 702, thereby fixing the placement seat 802 to the left end of the capacitive stylus body 1. At this time, due to the action of the tension spring 809, the moving rod 808 is embedded in the inside of the engaging hole 805, thereby restricting the protective pad 804, and the protective pad 804 covers one side of the embedded Fresnel lens 302, thereby protecting the embedded Fresnel lens 302 from dust.

[0050] Example 2, below in conjunction with the attached Figure 8 To further illustrate the present invention, a laser wireless charging method for an active capacitive pen laser wireless charging includes the following steps:

[0051] S1. Calibrate and receive laser light: When the MEMS micromirror array 502 is aligned with the multi-junction photovoltaic chip 301, the embedded Fresnel lens 302 facilitates the introduction of laser light into the multi-junction photovoltaic chip 301, thereby converting the received laser light into electrical energy. The hollow retroreflector 303 then feeds back the signal to guide the transmitter to calibrate the optical path.

[0052] S2, Energy Management Unit: Through the dual-mode energy storage setting of super capacitor 401 and lithium battery 402, it prioritizes powering the pen tip circuit when receiving laser light, and automatically switches to battery power when there is no laser input, with a switching delay of less than one millisecond;

[0053] S3. Overheat protection: The dual redundant temperature sensor 501 is used to detect the internal charging temperature of the capacitive stylus body 1. When the temperature is too high, the MEMS micromirror array 502 can deflect the incident laser by more than five degrees within 100 microseconds, thereby achieving safety control.

[0054] S4. Dust protection: When the limiting block 814 passes through the limiting hole 702, it is convenient to fix the placement seat 802 on the outside of the embedded Fresnel lens 302. At this time, the protective pad 804 covers one side of the embedded Fresnel lens 302 to protect the embedded Fresnel lens 302 from dust, thereby preventing dust from affecting the embedded Fresnel lens 302 from receiving laser light.

[0055] In summary: When the present invention is in use, the power switch 403 can be used to control the capacitive pen body 1 to be turned on or off. When laser charging is performed, the charging signal is transmitted to the vibration motor 405 through the main control chip module 6. The vibration motor 405 vibrates briefly to indicate that charging is in progress or charging is complete, and the charging status is displayed through the ring light strip 404. When the MEMS micromirror array 502 is flush with the multi-junction photovoltaic chip 301, the embedded Fresnel lens 302 facilitates the introduction of laser light into the multi-junction photovoltaic chip 301, thereby converting the received laser light into a charge. The device uses electrical energy and feeds back signals through the hollow reflector 303 to guide the transmitter to calibrate the optical path. The dual redundant temperature sensor 501 facilitates the detection of the internal charging temperature of the capacitive pen body 1. The dual-mode energy storage setting of the supercapacitor 401 and the lithium battery 402 allows the pen tip circuit to be powered first when receiving laser light, and automatically switches to battery power when there is no laser input. The switching delay is less than one millisecond. When the temperature is too high, the MEMS micromirror array 502 can deflect the incident laser by more than five degrees within one hundred microseconds, thereby achieving safety control.

[0056] When the handle 815 is aligned with the current indicator bar 816, the guide block 812 drives the limiting block 814 to be clamped inside the limiting hole 702, thereby fixing the placement seat 802 to the left end of the capacitive stylus body 1. At this time, due to the action of the tension spring 809, the moving rod 808 is embedded in the clamping hole 805, thereby restricting the protective pad 804, and the protective pad 804 covers one side of the embedded Fresnel lens 302, thereby protecting the embedded Fresnel lens 302 from dust and preventing dust from affecting the embedded Fresnel lens 302 from receiving laser. When the handle 815 is rotated forty-five degrees counterclockwise, the rotating seat 810 drives the connecting rod 811 to rotate, so that the connecting rod 811 drives the limiting block 814 to separate from the limiting hole 702, making it easier to disassemble the placement seat 802, and then pull the rotating seat 810. The rotating seat 810 drives the placement seat 802 to move along the outer wall of the positioning rod 701 through the positioning hole 807, so that the placement seat 802 is separated from the left end of the capacitive pen body 1. Due to the action of the elastic rope 801, it is convenient to place the placement seat 802 on the outside of the capacitive pen body 1, which is convenient for the normal use of the embedded Fresnel lens 302. When the handle 815 is rotated forty-five degrees counterclockwise again, the guide block 812 drives the moving hole 813 to pass through the outer wall of the moving rod 808, and the two sides of the guide block 812 drive the moving rod 808 to move toward the outer wall of the placement seat 802. At this time, the tension spring 809 is stretched, and the moving rod 808 is separated from the clamping hole 805, thereby releasing the restriction on the protective pad 804, making it convenient to pull the protective pad 804 out from the inside of the embedded hole 803, so that the user can disassemble and clean the protective pad 804.

[0057] The above description is merely a preferred embodiment of the present invention and does not limit the present invention in any other manner. Any person skilled in the art may utilize the above-disclosed technical content to modify or modify the present invention into equivalent embodiments. However, any simple modifications, equivalent variations, and modifications to the above embodiments that do not depart from the technical content of the present invention and are based on the technical essence of the present invention shall still fall within the scope of protection of the present invention.

Claims

1. A laser wireless charging active capacitive stylus, characterized in that: The device comprises a capacitive pen body (1) and a pen tip pressure sensing module (2), wherein the pen tip pressure sensing module (2) is installed inside the capacitive pen body (1) and extends out of the right end of the capacitive pen body (1); The device further comprises a laser conversion module (3), a dual-mode energy storage module (4), an overheat protection module (5), a clamping member (7) and a conversion protection mechanism (8). The laser conversion module (3) is arranged at the left end of the capacitive pen body (1) and is used for calibrating the laser and receiving the laser and converting it into electrical energy. The dual-mode energy storage module (4) is arranged on the right side of the laser conversion module (3) and is used for turning the capacitive pen body (1) on and off, providing a power prompt, receiving and storing electrical energy. The overheat protection module (5) is arranged in the laser conversion module (3) and is used for detecting temperature and adjusting the light receiving angle of the laser conversion module (3). The clamping member (7) is arranged at the left end of the capacitive pen body (1). The conversion protection mechanism (8) is detachably arranged on the left side of the capacitive pen body (1) and is used for performing dustproof treatment on the laser conversion module (3). The clamping member (7) and the conversion protection mechanism (8) are rotatably clamped.

2. The laser wireless charging active capacitive stylus according to claim 1, characterized in that: A main control chip module (6) is provided in the middle of the capacitive pen body (1).

3. The laser wireless charging active capacitive stylus according to claim 1, characterized in that: The dual-mode energy storage module (4) comprises a supercapacitor (401) and a lithium battery (402); the lithium battery (402) is installed inside the capacitive pen body (1), and the lithium battery (402) is arranged on the right side of the laser conversion module (3); and the supercapacitor (401) is installed inside the capacitive pen body (1) near the left side of the lithium battery (402).

4. The laser wireless charging active capacitive stylus according to claim 3, characterized in that: The device further comprises a power switch (403), an annular light strip (404) and a vibration motor (405), wherein the vibration motor (405) is installed inside the capacitive pen body (1), and the vibration motor (405) is arranged on the left side of the supercapacitor (401); the power switch (403) is installed on the outer wall of the capacitive pen body (1) near the outer side of the lithium battery (402); and the annular light strip (404) is installed on the outer wall of the capacitive pen body (1) near the left side of the power switch (403).

5. The laser wireless charging active capacitive stylus according to claim 1, characterized in that: The laser conversion module (3) comprises a multi-junction photovoltaic chip (301), an embedded Fresnel lens (302) and a hollow retroreflector (303); the multi-junction photovoltaic chip (301) is installed inside the capacitive pen body (1); the multi-junction photovoltaic chip (301) is arranged on the left side of the dual-mode energy storage module (4); the hollow retroreflector (303) is installed inside the capacitive pen body (1) near the left side of the multi-junction photovoltaic chip (301); and the embedded Fresnel lens (302) is embedded on the inner wall of the left end of the capacitive pen body (1).

6. The laser wireless charging active capacitive stylus according to claim 1, characterized in that: The overheat protection module (5) comprises a dual-redundant temperature sensor (501) and a MEMS micromirror array (502); the dual-redundant temperature sensor (501) is arranged outside the laser conversion module (3); and the MEMS micromirror array (502) is installed on a side of the capacitive pen body (1) close to the dual-redundant temperature sensor (501).

7. The laser wireless charging active capacitive stylus according to claim 1, characterized in that: The clamping member (7) comprises a positioning rod (701) and a limiting hole (702). Two positioning rods (701) are provided. The two positioning rods (701) are fixedly connected to the left end of the capacitive stylus body (1). The two positioning rods (701) are symmetrically arranged. The limiting hole (702) is opened on the outer wall of the positioning rod (701).

8. The laser wireless charging active capacitive stylus according to claim 1, characterized in that: The conversion protection mechanism (8) comprises an elastic rope (801), a placement seat (802), an embedding hole (803), a protection pad (804), a clamping hole (805), a mounting hole (806), a positioning hole (807), a moving rod (808), a tension spring (809) and an indicator bar (816). One end of the elastic rope (801) is fixedly connected to one side of the outer wall of the capacitive pen body (1). The other end of the elastic rope (801) is fixedly connected to the placement seat (802). The placement seat (802) is provided with an embedding hole (803) on the right side. The protection pad (804) is slidably connected inside the embedding hole (803). The outer wall of the protection pad (804) is provided with two clamping holes (805), and the two clamping holes (805) are symmetrical. The arrangement comprises the following steps: a mounting hole (806) is provided on the left side of the placement seat (802); two positioning holes (807) are provided on the right side of the placement seat (802) near the outside of the embedding hole (803); two moving rods (808) are slidably connected to the inner wall of the mounting hole (806); the two moving rods (808) pass through the inner wall of the mounting hole (806) and extend into the inside of the embedding hole (803); a tension spring (809) is sleeved on the outer wall of the moving rod (808); one end of the tension spring (809) is fixedly connected to one end of the moving rod (808), and the other end is fixedly connected to the inner wall of the mounting hole (806); a plurality of indicator bars (816) are fixedly connected to the outer wall of the placement seat (802); and the plurality of indicator bars (816) are equidistantly arranged in a circular array.

9. The laser wireless charging active capacitive stylus according to claim 8, characterized in that: The utility model further comprises a rotating seat (810), a connecting rod (811), a guide block (812), a movable hole (813), a limiting block (814) and a handle (815), wherein the rotating seat (810) is rotatably connected to the inner wall of the mounting hole (806), and two connecting rods (811) are fixedly connected to the inner wall of the rotating seat (810), and the two connecting rods (811) are symmetrically arranged, and one end of the connecting rod (811) is fixedly connected to the inside of the mounting hole (806) with a guide block (812), a movable hole (813) is provided on one side of the guide block (812), and a limiting block (814) is fixedly connected to the other side of the guide block (812), and a handle (815) is embedded on one side of the rotating seat (810).

10. A laser wireless charging method for an active capacitive pen, characterized in that: The steps include: S1. Calibrate and receive laser light: When the MEMS micromirror array (502) is flush with the multi-junction photovoltaic chip (301), the embedded Fresnel lens (302) facilitates the introduction of laser light into the multi-junction photovoltaic chip (301), thereby converting the received laser light into electrical energy, and feeding back a signal through the hollow retroreflector (303) to guide the transmitter to calibrate the optical path; S2, energy management unit: through the dual-mode energy storage setting of super capacitor (401) and lithium battery (402), the pen tip circuit is powered first when receiving laser, and automatically switches to battery power supply when there is no laser input, with a switching delay of less than one millisecond; S3, overheat protection: The dual redundant temperature sensor (501) is used to detect the internal charging temperature of the capacitive pen body (1). When the temperature is too high, the MEMS micromirror array (502) can deflect the incident laser by more than five degrees within one hundred microseconds, thereby achieving safety control; S4. Dust protection: When the limiting block (814) passes through the limiting hole (702), it is convenient to fix the placement seat (802) on the outside of the embedded Fresnel lens (302). At this time, the protective pad (804) covers one side of the embedded Fresnel lens (302), thereby protecting the embedded Fresnel lens (302) from dust and preventing dust from affecting the embedded Fresnel lens (302) receiving laser.

Images