CN214376365U - Code-free pen and control circuit thereof - Google Patents

Abstract

An embodiment of the utility model provides a no sign indicating number pen and control circuit thereof, it includes the pen-holder subassembly, the pen-holder subassembly includes: the pen comprises a pen tube, a pen holder support, a main control circuit board, a pressure sensor and a pen core, wherein the pressure sensor is arranged at the rear end of the pen core, the main control circuit board, the pressure sensor and the pen core are connected to the pen holder support, the pen holder support is arranged in the pen tube, the main control circuit board comprises a track capture module used for capturing the front end part of the pen core in real time to move and write a track. Compared with the prior art, the utility model discloses no sign indicating number pen and control circuit thereof, it writes the orbit through nine sensor module and hall switch module common to the removal of refill and catches to the orbit data that will catch convert, finally carry the screen that gives terminal equipment and reappear. On one hand, the method does not rely on code dot paper any more, has lower use cost and stronger universality, is not limited to paper writing in application scenes, and has wider application field.

Description

Code-free pen and control circuit thereof

Technical Field

The utility model relates to an electronic pen device technical field especially relates to a no sign indicating number pen and control circuit thereof.

Background

The conventional electronic pen adopts code dot paper, and the electronic pen performs two-dimensional positioning by capturing code dots on the code dot paper, so as to finally determine a writing track and display the writing track on a display screen of a terminal device. However, the electronic pen has the limitations that the electronic pen must be written on a specific code point paper, different products have code point logic with specific rules, the universality is poor, and the application scene is limited.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's is not enough, provides a no sign indicating number pen to it is poor to solve current electronic pen commonality, uses the limited technical problem of scene.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an embodiment of the utility model provides a no sign indicating number pen, it includes the pen-holder subassembly, the pen-holder subassembly includes: the pen comprises a pen tube, a pen holder support, a main control circuit board, a pressure sensor and a pen core, wherein the pressure sensor is arranged at the rear end of the pen core, the pressure sensor is electrically connected with the main control circuit board, the pressure sensor and the pen core are connected onto the pen holder support, the pen holder support is arranged in the pen tube, the main control circuit board comprises a track capture module, and when the pen core is used for writing, the pressure sensor triggers the main control circuit board to control the track capture module to be opened so as to capture the moving and writing track of the front end part of the pen core in real time.

Wherein the trajectory capture module comprises: and the nine-axis sensor captures a moving track signal of the front end part of the pen core together, and the MCU controller receives the moving track signal and converts the moving track signal into coded data.

The main control circuit board further comprises a communication module, wherein the communication module is electrically connected to the MCU controller and used for transmitting the coded data to the mobile terminal so as to restore the track of the mobile terminal.

And the MCU controller is also electrically connected with a storage module, and the storage module is used for storing the coded data.

Preferably, the communication module is a bluetooth communication module.

The pen holder support is further provided with a battery, the MCU control is further electrically connected with a power management module, and the power management module is electrically connected with the battery.

The pen cap assembly comprises a pen cap and a pen cap hook, and the pen cap hook is connected with the pen cap; the pen cap is further provided with a magnet block, the main control circuit board is further provided with a magnetic force inductive switch, and when the pen cap assembly is separated from the pen holder assembly, the magnetic force inductive switch induces the magnetic force change of the magnet block to wake up the main control circuit board to start working.

The pen holder support is further provided with a mechanical switch, and the mechanical switch is used for sending a trigger signal to the main control circuit board so that the main control circuit board can be started to work.

The embodiment of the utility model provides a no sign indicating number pen control circuit is still provided, it includes: the device comprises a power supply management module, a Bluetooth communication module, an MCU module, a 9-axis sensor module, a Hall switch module, a pressure switch module and a storage module; the power management module is electrically connected with the Bluetooth communication module and the MCU module, and the MCU module is also electrically connected with the 9-axis sensor module, the Hall switch module, the pressure switch module and the storage module.

Wherein, the MCU module includes the main control chip U3 that the model is CH579F, the 9 axle sensor module includes the integrated chip U2 that the model is LSM9DS1, the SCL pin electricity of integrated chip U2 is connected in the PA5 pin of main control chip U3, the SDA pin electricity of integrated chip U2 is connected in the PA4 pin of main control chip U3, the pressure switch module includes: a pressure switch SW1, wherein one end of the pressure switch SW1 is grounded, and the other end is electrically connected to a PA9 pin of the main control chip U3; the Hall switch module comprises an integrated chip U4 with the model number FH8915, a triode Q1 and a triode Q5, wherein the 2 nd pin of the integrated chip U4 is electrically connected to the S pole of the triode Q1, a resistor R3 is connected in series between the S pole of the triode Q1 and the D pole of the triode Q5, the G pole of the triode Q1 is electrically connected to the D pole of the triode Q5, the S pole of the triode Q5 is electrically connected to the 3 rd pin of the integrated chip U4, and the 1 st pin of the integrated chip U4 is electrically connected to the G pole of the triode Q5.

Compared with the prior art, the utility model discloses no sign indicating number pen and control circuit thereof, it writes the orbit through nine sensor module and hall switch module common to the removal of refill and catches to the orbit data that will catch convert, finally carry the screen that gives terminal equipment and reappear. On one hand, the method does not rely on code dot paper any more, has lower use cost and stronger universality, is not limited to paper writing in application scenes, and has wider application field.

The foregoing is a summary of the present invention, and other objects, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments, which is provided for the purpose of illustration and understanding of the present invention.

Drawings

Fig. 1 is a schematic view of an overall structure of a pen without a code according to an embodiment of the present invention.

Fig. 2 is a schematic view of a pen holder assembly of a codeless pen according to an embodiment of the present invention.

Fig. 3 is an exploded view of a codeless pen according to an embodiment of the present invention.

Fig. 4 is a functional block diagram of a main control circuit board of a codeless pen according to an embodiment of the present invention.

Fig. 5 is a circuit diagram of a part of the MCU module of the control circuit of the codeless pen according to the present invention.

Fig. 6 is a circuit diagram of a part of the storage module and the 9-axis sensor module of the control circuit of the codeless pen according to the embodiment of the present invention.

Fig. 7 is a circuit diagram of a hall switch module of a control circuit of a codeless pen according to an embodiment of the present invention.

Fig. 8 is a circuit diagram of a pressure switch module of a control circuit of a codeless pen according to an embodiment of the present invention.

Fig. 9 is a circuit diagram of a power management module of a control circuit of a codeless pen according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and the following detailed description.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "secured" are to be construed broadly and can, for example, be connected or detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above should not be understood to necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by one skilled in the art.

Referring to fig. 1 to 4, the present embodiment discloses a pen without a combination, which includes a pen holder assembly 1 and a pen cap assembly 2, wherein a pen point end of the pen holder assembly 1 is inserted into a pen cap of the pen cap assembly 2.

The cartridge assembly 1 includes: the pen comprises a pen tube 11, a pen holder support 12, a main control circuit board 13, a pressure sensor 15 and a refill 14, wherein the pressure sensor 15 is arranged at the rear end of the refill 14, the pressure sensor 15 is electrically connected to the main control circuit board 13, the pressure sensor 15 and the refill 14 are connected to the pen holder support 12, and the pen holder support 12 is arranged in the pen tube 11. The main control circuit board 13 comprises a track capture module, and when the pen core 14 writes, the pressure sensor 15 triggers the main control circuit board 13 to control the track capture module to be opened, so that the front end part of the pen core 14 is captured in real time to move a writing track.

The refill 14 is a ball-point pen refill, an ink refill, a pencil refill and similar refill rod bodies which are commonly used at present, that is, the refill 14 in the embodiment can be a refill capable of writing and also a refill incapable of writing, and the refill is only a refill simulating a commonly used writing pen.

Specifically, please refer to fig. 4 again that the trajectory capturing module includes: the writing pen comprises an MCU controller 131 and a nine-axis sensor module 133 electrically connected to the MCU controller 131, wherein the nine-axis sensor module 133 captures a movement track signal of the front end part of the pen core 14, and the MCU controller 131 receives the movement track signal and converts the movement track signal into coded data.

The hall switch module 132 is mainly used for detecting the magnetic force of the pen cap, when the pen cap is pulled off, the hall switch module is conducted to a power supply circuit of the 9-axis sensor so as to start the pen cap, otherwise, when the pen cap is inserted, the hall switch module is disconnected from the power supply circuit, so that the whole pen is in a dormant state.

Further, the main control circuit board 13 further includes a communication module 134, and the communication module 134 is electrically connected to the MCU controller 131, and is configured to send the encoded data to the mobile terminal, so as to perform track restoration on the mobile terminal. The mobile terminal comprises a tablet personal computer, a mobile phone, a smart watch and the like. After the code-free pen is started, communication connection with the mobile terminal equipment is established firstly, the mobile terminal equipment is provided with a corresponding application program, and the coded data is restored through a software algorithm so as to truly reproduce the written information. In this embodiment, the communication module 134 is a bluetooth communication module.

The MCU controller 131 is further electrically connected to a storage module 135, and the storage module 135 is used for storing the encoded data. Because the track information written by the pen core 14 is encoded and stored in the storage module 135, compared with the image information captured by a camera, the data size is smaller, the occupied storage space is small, and the storage resource can be saved.

Referring to fig. 3 and 4 again, the pen holder support 12 is further provided with a battery 16, the MCU controller 131 is further electrically connected to a power management module 136, and the power management module 136 is electrically connected to the battery 16 to control charging and discharging of the battery 16.

As shown in fig. 3, the pen cap assembly 2 comprises a pen cap 21 and a pen cap hook 22, the pen cap hook 22 is connected to the pen cap 21; the pen cap 21 is further provided with a magnet block 23, the main control circuit board 13 is further provided with a magnetic force inductive switch, and when the pen cap assembly 2 is separated from the pen holder assembly 1, the magnetic force inductive switch induces the magnetic force change of the magnet block 23 to wake up the main control circuit board 13 to start working. When the user finishes using, when the cap assembly 2 is sleeved on the penholder assembly 1, if the user forgets to turn off the pen, the magnetic force inductive switch senses a signal that the magnet block 23 approaches, and the main control circuit board 13 is controlled to enter a dormant state or a power-off state, so that electric energy is saved.

The pen holder support 12 is further provided with a mechanical switch 121, and the mechanical switch 121 is used for sending a trigger signal to the main control circuit board 13 so that the main control circuit board 13 is started to work. When the mobile terminal equipment is used, the mobile terminal equipment is started and communication connection with the mobile terminal equipment is established.

In this embodiment, since the barrel holder 12 is a flat structure and the barrel 11 is a round tube, a front holder 10 is further provided at the front end of the barrel holder 12, and a rear holder 19 is provided at the rear end, and the front holder 10 and the rear holder 19 fixedly connect the barrel holder 12 to the barrel 11. The rear end of the pen tube 11 is further connected with a plug 18, and a USB interface is embedded in the plug 18 and electrically connected to the power management module 136 for charging the battery 16.

Referring to fig. 5 to 9 again, the present embodiment further discloses a control circuit for the codeless pen, wherein the control circuit includes: the device comprises a power supply management module, a Bluetooth communication module, an MCU module, a 9-axis sensor module, a Hall switch module, a pressure switch module and a storage module; the power management module is electrically connected with the Bluetooth communication module and the MCU module, and the MCU module is also electrically connected with the 9-axis sensor module, the Hall switch module, the pressure switch module and the storage module.

Wherein, the MCU module includes that the model is CH 579F's main control chip U3, and this main control chip U3 is from taking bluetooth communication function, 9 axle sensor module includes that the model is LSM9DS 1's integrated chip U2, integrated chip U2's SCL pin electricity is connected in main control chip U3's PA5 pin, integrated chip U2's SDA pin electricity is connected in main control chip U3's PA4 pin, the pressure switch module includes: a pressure switch SW1, wherein one end of the pressure switch SW1 is grounded, and the other end is electrically connected to a PA9 pin of the main control chip U3; the Hall switch module comprises an integrated chip U4 with the model number FH8915, a triode Q1 and a triode Q5, wherein the 2 nd pin of the integrated chip U4 is electrically connected to the S pole of the triode Q1, a resistor R3 is connected in series between the S pole of the triode Q1 and the D pole of the triode Q5, the G pole of the triode Q1 is electrically connected to the D pole of the triode Q5, the S pole of the triode Q5 is electrically connected to the 3 rd pin of the integrated chip U4, and the 1 st pin of the integrated chip U4 is electrically connected to the G pole of the triode Q5.

As shown in fig. 9, the power management module, integrated circuit U5, has model number ETA 7940; the pin 8 of the integrated circuit U5 is a ground pin. The positive terminal of the battery is connected to pin 6 of the integrated circuit U5. The 5V circuit of the USB is connected with a pin 7 of an integrated circuit U5. BAT1 is a coupler, model number 0.8T2AWB, connected to a rechargeable lithium battery, and the rest of the peripheral circuitry. When the USB is charged, 5V power of the USB is input into the U5 from a pin 7, a pin 6 outputs voltage to charge a battery, and meanwhile, the integrated circuit pin 2 outputs a charging indicator light signal to enable light to be in a red charging state. When the peripheral USB is disconnected, the U5 changes from the pin 6 to the power supply input end (battery voltage input), and the U5 and the boosting inductor L1 together enable the pin 7 to output a high-level voltage close to 5V for the circuits of other devices to work.

As shown in fig. 8, the pressure switch module includes a pressure switch SW1, one end of which is grounded, and one end of a resistor R1 is connected to one end of the SW1 pressure switch, and is connected to pin 7 of an MCU module U3 model CH 579F. The other end of R1 is connected to VCC 2. In a normal state, the switch is switched off, the pin 7 of the MCU module is at a high level, and data acquisition is not started in the MCU module. When the pressure switch is pressed down and conducted, the level of a pin 7 of the MCU module is pulled down, the MCU module starts to work, and data transmitted by the 9-axis sensor are collected and processed.

As shown in fig. 7, the hall switching circuit includes an integrated chip U4 of type FH8915, a P-type MOS transistor Q1 of type AO3407, and a MOS transistor Q5 of type 2N7002, wherein the U6 is a LDO3.3V voltage regulator, and the type CE6219 thereof. When external magnetic force is applied with magnetism (when the pen cap is covered, the Hall switch is in a conducting and closing state, at this time, pin 2 of the integrated chip U4 is in a high level, pin 1 is pulled down to be in a low level after conducting, simultaneously, the G pole of the MOS tube 2N7002 connected with pin 1 of the integrated chip U4 is also in a low level, and Q5 is in a non-conducting state, so that Q1 is also in a non-conducting state, pin 3 (input pin) of the LDO voltage regulator tube is 0V, the output of the voltage regulator tube is also 0V, at this time, the pen is in a power-off state, only the power management integrated circuit U5 works with the Hall, the power consumption is extremely low, when the pen cap is pulled out, the Hall device does not sense the magnetic force, is in a disconnected state, at this time, the integrated chip U4 is in a non-conducting state, pin 1 is in a high level, at the same time, the G pole of the Q5 tube 2N7002 connected with pin 1 of the integrated chip U4 is also in a high level, Q5 is in a conducting state, and Q1 is pulled down, the Q1 tube is conducted, the voltage regulator tube U6 obtains voltage input, the voltage regulator tube is in a working state, and 3.3V is output for the whole machine to work.

As shown in fig. 6, the memory module includes an ic U1 with a model FH25Q64B, wherein pins 1 and 4 of the ic U1 are grounded, and pins 3, 7 and 8 are VCC-powered. Pins 2, 5 and 6 of the integrated chip U1 are connected with the MCU module.

The 9-axis sensor module, which includes an integrated chip U2, is model LSM9DS 1.

The working principle of the control circuit of the codeless pen of the embodiment is as follows: when the code pen is used for writing, pressure generated by the pen point of the pen core transmits a pressure sensing signal to the main control chip through the pressure switch module connected with the tail of the pen core. The main control chip picks up 9-axis sensor signals. The coordinate information collected by the 9-axis sensor is sent to the main control chip in an electric signal mode, the main control chip sends the coordinate information to a cloud (a computer end, a mobile phone end and the like) through the Bluetooth chip after algorithm coding, and the coordinate information is restored through an algorithm, so that a synchronous track is presented. If the Bluetooth is in an unconnected state, the collected coordinate data are encoded and stored in a memory, and data recovery synchronous track processing is performed after later connection.

Compared with the prior art, the utility model discloses no sign indicating number pen and control circuit thereof, it writes the orbit through nine sensor module and hall switch module common to the removal of refill and catches to the orbit data that will catch convert, finally carry the screen that gives terminal equipment and reappear. On one hand, the method does not rely on code dot paper any more, has lower use cost and stronger universality, is not limited to paper writing in application scenes, and has wider application field.

The technical content of the present invention is further described by the embodiments only, so that the reader can understand it more easily, but the embodiments of the present invention are not limited thereto, and any technical extension or re-creation according to the present invention is protected by the present invention. The protection scope of the present invention is subject to the claims.

Claims (10)

1. The utility model provides a no sign indicating number pen which characterized in that, includes the pen-holder subassembly, the pen-holder subassembly includes: the pen comprises a pen tube, a pen holder support, a main control circuit board, a pressure sensor and a pen core, wherein the pressure sensor is arranged at the rear end of the pen core, the pressure sensor is electrically connected with the main control circuit board, the pressure sensor and the pen core are connected onto the pen holder support, the pen holder support is arranged in the pen tube, the main control circuit board comprises a track capture module, and when the pen core is used for writing, the pressure sensor triggers the main control circuit board to control the track capture module to be opened so as to capture the moving and writing track of the front end part of the pen core in real time.

2. The codeless pen of claim 1 wherein the trajectory capture module comprises: the pen refill comprises an MCU controller and a nine-axis sensor module electrically connected with the MCU controller, wherein the nine-axis sensor module captures a moving track signal of the front end part of the pen refill, and the MCU controller receives the moving track signal and converts the moving track signal into coded data.

3. The codeless pen according to claim 2, wherein the main control circuit board further comprises a communication module electrically connected to the MCU controller for transmitting the encoded data to the mobile terminal for trajectory restoration at the mobile terminal.

4. The codeless pen according to claim 3, wherein a storage module is further electrically connected to the MCU controller, and the storage module is used for storing the encoded data.

5. The codeless pen of claim 3 wherein the communication module is a Bluetooth communication module.

6. The codeless pen according to claim 2, wherein a battery is further disposed on the holder support, and a power management module is further electrically connected to the MCU control, and the power management module is electrically connected to the battery.

7. The codeless pen of claim 1 further comprising a cap assembly connected to the barrel assembly, the cap assembly comprising a cap and a cap hook, the cap hook connected to the cap; the pen cap is further provided with a magnet block, the main control circuit board is further provided with a magnetic force inductive switch, and when the pen cap assembly is separated from the pen holder assembly, the magnetic force inductive switch induces the magnetic force change of the magnet block to wake up the main control circuit board to start working.

8. The codeless pen according to claim 7, wherein a mechanical switch is further provided on the pen holder support, and the mechanical switch is used for sending a trigger signal to the main control circuit board so that the main control circuit board is turned on to operate.

9. A codeless pen control circuit, comprising: the device comprises a power supply management module, a Bluetooth communication module, an MCU module, a 9-axis sensor module, a Hall switch module, a pressure switch module and a storage module; the power management module is electrically connected with the Bluetooth communication module and the MCU module, and the MCU module is also electrically connected with the 9-axis sensor module, the Hall switch module, the pressure switch module and the storage module.

10. The codeless pen control circuit according to claim 9, wherein the MCU module comprises a main control chip U3 with model CH579F, the 9-axis sensor module comprises an integrated chip U2 with model LSM9DS1, an SCL pin of the integrated chip U2 is electrically connected to a PA5 pin of the main control chip U3, an SDA pin of the integrated chip U2 is electrically connected to a PA4 pin of the main control chip U3, and the pressure switch module comprises: a pressure switch SW1, wherein one end of the pressure switch SW1 is grounded, and the other end is electrically connected to a PA9 pin of the main control chip U3; the Hall switch module comprises an integrated chip U4 with the model number FH8915, a triode Q1 and a triode Q5, wherein the 2 nd pin of the integrated chip U4 is electrically connected to the S pole of the triode Q1, a resistor R3 is connected in series between the S pole of the triode Q1 and the D pole of the triode Q5, the G pole of the triode Q1 is electrically connected to the D pole of the triode Q5, the S pole of the triode Q5 is electrically connected to the 3 rd pin of the integrated chip U4, and the 1 st pin of the integrated chip U4 is electrically connected to the G pole of the triode Q5.

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