CN111796699B - Intelligent pen - Google Patents

Intelligent pen Download PDF

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Publication number
CN111796699B
CN111796699B CN202010690236.8A CN202010690236A CN111796699B CN 111796699 B CN111796699 B CN 111796699B CN 202010690236 A CN202010690236 A CN 202010690236A CN 111796699 B CN111796699 B CN 111796699B
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China
Prior art keywords
resistor
infrared
pressure switch
capacitor
pen
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CN202010690236.8A
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CN111796699A (en
Inventor
卢启伟
陈方圆
卢炀
陈鹏宇
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Shenzhen Eaglesoul Technology Co Ltd
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Shenzhen Eaglesoul Education Service Co Ltd
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Priority to CN202010690236.8A priority Critical patent/CN111796699B/en
Priority to PCT/CN2020/110909 priority patent/WO2022011788A1/en
Publication of CN111796699A publication Critical patent/CN111796699A/en
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G06F3/03545—Pens or stylus
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/40—Transceivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • Position Input By Displaying (AREA)

Abstract

The embodiment of the invention discloses an intelligent pen, which belongs to the technical field of intelligent pens and comprises the following components: the first pressure switch is arranged at the tail end part of the intelligent pen, and the first pressure switch can perform switch operation in a reciprocating cycle manner; the second pressure switch is arranged at the tail of the pen core of the intelligent pen and used for generating a trigger signal after the second pressure switch is in a conducting state under the pressure of the pen point when writing on the writing paper; and the processor judges whether the first pressure switch is in a closed state or not after receiving the trigger signal generated by the second pressure switch, controls an infrared receiving and generating circuit on the intelligent pen to emit an infrared light signal to a writing paper area of the intelligent pen if the first pressure switch is in the closed state, and further determines the writing trace of the intelligent pen on the writing paper by reading a reflection signal of the infrared light. Through the scheme of this application, can carry out the orbit collection operation based on intelligent pen.

Description

Intelligent pen
Technical Field
The invention relates to the technical field of intelligent pens, in particular to an intelligent pen.
Background
Writing is a wonderful experience, writing on paper always has an attractive force, and people always desire to keep handwritten notes even in the information age. Especially in the aspect of intelligent education, when black technologies such as electromagnetic writing recognition, infrared dot matrix recognition and ultrasonic recognition are integrated into writing, various intelligent writing pens are provided.
In the prior art, as the number of the components in the intelligent pen is large, the overall size of the intelligent pen is large due to unreasonable structural layout of the intelligent pen in the process of using the intelligent pen, and meanwhile, the components cannot cooperate in an effective and unified manner, so that the use experience of a user on the intelligent pen is influenced.
Therefore, a new solution for the smart pen with simple structure, easy maintenance and high working efficiency is needed.
Disclosure of Invention
In view of this, an embodiment of the present invention provides an intelligent pen, which provides a solution for an intelligent pen with a simple structure, easy maintenance, and high working efficiency by combining a hardware structure and a hardware structure, and the intelligent pen includes:
the first pressure switch is arranged at the tail end part of the intelligent pen, and the first pressure switch can perform switch operation in a reciprocating cycle manner;
the second pressure switch is arranged at the tail of the pen core of the intelligent pen and used for generating a trigger signal after the second pressure switch is in a conducting state under the pressure of the pen point when writing on the writing paper;
and the processor judges whether the first pressure switch is in a closed state or not after receiving the trigger signal generated by the second pressure switch, controls an infrared receiving and generating circuit on the intelligent pen to emit an infrared light signal to a writing paper area of the intelligent pen if the first pressure switch is in the closed state, and further determines the writing trace of the intelligent pen on the writing paper by reading a reflection signal of the infrared light.
According to a specific implementation manner of the embodiment of the present disclosure, the smart pen further includes:
the camera shooting acquisition module acquires a track formed by the pen point in the writing area after the infrared transceiving circuit transmits an infrared light signal to form track information, and the processor performs data conversion processing on the track information through a preset data processing algorithm to form a track digital signal;
a memory for storing the trace digital signals formed by the processor;
and the Bluetooth module sends the track digital signal stored in the memory to a target terminal after the intelligent pen is successfully in communication connection with the target terminal.
According to a specific implementation manner of the embodiment of the present disclosure, the smart pen further includes:
and the power management circuit is used for supplying power to the second pressure switch, the infrared receiving and transmitting circuit, the camera shooting acquisition module, the processor, the memory and the Bluetooth module respectively.
According to a specific implementation manner of the embodiment of the present disclosure, the power management circuit includes:
the first port is used for providing a high-level power supply signal, and is sequentially connected with a first resistor and a first inductor to form a high-level supply point;
the second port and the third port are used for providing a differential connection information channel;
and the fourth port is used for providing a ground connection signal, and is connected with the ground through a second inductor.
According to a specific implementation manner of the embodiment of the present disclosure, the high-level power supply point is connected to first ends of a first capacitor and a second capacitor connected in parallel, and second ends of the first capacitor and the second capacitor are connected to ground;
the second port is connected with a first end of a second resistor, and a second end of the second resistor forms a first differential signal connection point;
the third port is connected with a first end of a third resistor, and a second end of the third resistor forms a second differential signal connection point.
According to a specific implementation manner of the embodiment of the present disclosure, a first end of the first resistor is connected to a first end of a first electrostatic discharge diode, and a second end of the first electrostatic discharge diode is connected to ground;
the first end of the second resistor is connected with the first end of a second electrostatic discharge diode, and the second end of the second electrostatic discharge diode is connected with the ground;
the first end of the third resistor is connected with the first end of a third electrostatic discharge diode, and the second end of the third electrostatic discharge diode is connected with the ground.
According to a specific implementation manner of the embodiment of the present disclosure, the first port, the second port, the third port, and the fourth port are arranged in parallel in a USB interface manner.
According to a specific implementation manner of the embodiment of the present disclosure, the bluetooth module includes:
a first end of the fourth resistor is connected with a collector of the first switching triode;
the Bluetooth chip comprises a first Bluetooth interface, a second Bluetooth interface and a third Bluetooth interface, and the first Bluetooth interface is connected with the second end of the fourth resistor and used for receiving a power supply signal;
first ends of the third capacitor and the fourth capacitor are connected with a second end of the fourth resistor, and second ends of the third capacitor and the fourth capacitor are connected with the ground;
the first end of the light emitting diode is connected with the second Bluetooth interface of the Bluetooth chip, the second end of the light emitting diode is connected with the second processor interface a2 of the processor, the second Bluetooth interface and the second processor interface a2 are used for data transmission between the Bluetooth chip and the processor, and the light emitting diode displays the frequency of the data transmission in a flashing mode.
According to a specific implementation manner of the embodiment of the present disclosure, the bluetooth module further includes:
a first end of the third inductor is connected with a third Bluetooth interface of the Bluetooth chip;
a first end of the fifth capacitor is connected with the second end of the third inductor;
the Bluetooth transmitting antenna is connected with the second end of the fifth capacitor;
a first end of the fourth inductor is connected with a second end of the third inductor, and a second end of the fourth inductor is connected with ground.
According to a specific implementation manner of the embodiment of the present disclosure, the infrared transceiver circuit includes an infrared emission module and an infrared collection module;
the infrared emission module comprises an infrared diode and a seventh resistor which are connected in series, wherein the first end of the infrared diode is connected with the collector electrode of the second switching triode, the second end of the infrared diode is connected with the first end of the seventh resistor, and the second end of the seventh resistor is grounded;
the infrared acquisition module comprises a fifth resistor, a sixth resistor, an infrared induction triode and a sixth capacitor;
the first end of the fifth resistor is connected with the collector of the switching triode, and the second end of the fifth resistor is connected with the emitter of the infrared induction triode;
a first end of the sixth resistor is connected with a second end of the fifth resistor, and a second end of the sixth resistor is connected with a base end of the infrared induction triode;
and the first end of the sixth capacitor is connected with the base end of the infrared induction triode, and the second end of the sixth capacitor is connected with the fourth interface of the processor.
The intelligent pen provided by the embodiment of the invention comprises a first pressure switch, wherein the first pressure switch is arranged at the tail end part of the intelligent pen, and the first pressure switch can perform switch operation in a reciprocating cycle manner; the second pressure switch is arranged at the tail of the pen core of the intelligent pen and used for generating a trigger signal after the second pressure switch is in a conducting state under the pressure of the pen point when writing on the writing paper; the processor judges whether the first pressure switch is in a closed state after receiving the trigger signal generated by the second pressure switch, and if so, controls the infrared receiving and generating circuit on the intelligent pen to emit an infrared light signal to the writing paper area of the intelligent pen, and further determines the writing trace of the intelligent pen on the writing paper by reading the reflection signal of the infrared light.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an intelligent pen according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another smart pen according to an embodiment of the present invention;
fig. 3 is a schematic circuit structure diagram of an intelligent pen according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a bluetooth module of an intelligent pen according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an infrared transceiver circuit of an intelligent pen according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a pressure sensing module of an intelligent pen according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, a smart pen includes a first pressure switch, a second pressure switch, an infrared transceiver circuit, and a processor.
The first pressure switch can be set to be in a connected or disconnected state in a pressing mode, the first pressure switch is arranged at the tail end part of the intelligent pen, and the first pressure switch can perform switch operation in a reciprocating cycle mode. In this way, when a user wants to use the smart pen for track writing, the state of the first pressure switch can be set to be electrically connected. Thus setting the first switch before the trace is written. As one mode, the first pressure switch may be formed using a press-type appliance switch.
The second pressure switch is used for detecting writing pressure in real time, and the second pressure switch is arranged at the tail of the pen core of the intelligent pen and used for generating a trigger signal after the second pressure switch is in a conducting state due to the pressure when the pen core writes on writing paper so as to indicate that a user has a track to write.
The processor can monitor the states of the first pressure switch and the second pressure switch, judge whether the first pressure switch is in a closed state after receiving the trigger signal generated by the second pressure switch, if so, control the infrared receiving and generating circuit on the intelligent pen to transmit an infrared light signal to the writing paper area of the intelligent pen, and further determine the writing trace of the intelligent pen on the writing paper by reading the reflection signal of the infrared light.
Through setting up two pressure switch, can prevent because the nib of user mistake touch the smart pen, lead to the condition of writing the orbit of the control of smart pen mistake.
According to a specific implementation manner of the embodiment of the present disclosure, referring to fig. 2, the smart pen further includes:
the camera shooting acquisition module acquires a track formed by the pen point in the writing area after the infrared transceiving circuit transmits an infrared light signal to form track information, and the processor performs data conversion processing on the track information through a preset data processing algorithm to form a track digital signal;
a memory for storing the trace digital signals formed by the processor;
and the Bluetooth module sends the track digital signal stored in the memory to a target terminal after the intelligent pen is successfully in communication connection with the target terminal.
According to a specific implementation manner of the embodiment of the present disclosure, the smart pen further includes:
and the power management circuit is used for supplying power to the second pressure switch, the infrared receiving and transmitting circuit, the camera shooting acquisition module, the processor, the memory and the Bluetooth module respectively.
According to a specific implementation manner of the embodiment of the present disclosure, referring to fig. 3, the power management circuit includes:
the first port J1, the first port J1 is used for providing a high-level power signal, and the first port J1 is connected with a first resistor R1 and a first inductor L1 in turn to form a high-level supply point.
The second port J2 and the third port J3, the second port J2 and the third port J3 are used for providing a differential connection information channel, and the smart pen can be in communication connection with external equipment through the differential signal.
A fourth port J4, the fourth port J4 is for providing a ground connection signal, and the fourth port J4 is connected to the ground through a second inductor L2.
According to a specific implementation manner of the embodiment of the present disclosure, the high-level power supply point is connected to first ends of a first capacitor C1 and a second capacitor C2 which are connected in parallel, and second ends of the first capacitor C1 and the second capacitor C2 are connected to ground;
the second port J2 is connected with a first end of a second resistor R2, and a second end of the second resistor R2 forms a first differential signal connection point;
the third port J3 is connected to a first terminal of a third resistor R3, and a second terminal of the third resistor R3 forms a second differential signal connection point.
According to a specific implementation manner of the embodiment of the present disclosure, a first terminal of the first resistor R1 is connected to a first terminal of a first electrostatic discharge diode D1, and a second terminal of the first electrostatic discharge diode D1 is connected to ground;
a first end of the second resistor R2 is connected with a first end of a second electrostatic discharge diode D2, and a second end of the second electrostatic discharge diode D2 is connected with the ground;
a first terminal of the third resistor R3 is connected to a first terminal of a third esd diode D3, and a second terminal of the third esd diode D3 is connected to ground.
According to a specific implementation manner of the embodiment of the present disclosure, the first port J1, the second port J2, the third port J3 and the fourth port J4 are arranged in parallel in the form of a USB interface.
The high-level connection point can be connected with a power transformation circuit, and a high-level power signal is converted into driving voltage for other modules through the power transformation circuit.
According to a specific implementation manner of the embodiment of the present disclosure, referring to fig. 4, the bluetooth module includes:
and a fourth resistor R4, wherein a first end of the fourth resistor R4 is connected with a collector of the first switching transistor Q2, and a radio set of the first switching transistor is connected with the driving voltage.
The Bluetooth chip comprises a first Bluetooth interface b1, a second Bluetooth interface b2 and a third Bluetooth interface b3, wherein the first Bluetooth interface b1 is connected with the second end of the fourth resistor R4 and used for receiving power signals, the first Bluetooth interface b1 is used for receiving driving voltage, the second Bluetooth interface b2 is used for transmitting and receiving signals to the second interface a2 of the processor, and the third Bluetooth interface b3 is used for transmitting Bluetooth signals to the outside through a Bluetooth antenna E1.
A third capacitor C3 and a fourth capacitor C4, wherein first ends of the third capacitor C3 and the fourth capacitor C4 are connected with a second end of the fourth resistor R4, and second ends of the third capacitor C3 and the fourth capacitor C4 are connected with the ground;
the light emitting diode D4, a first end of the light emitting diode D4 is connected to the second bluetooth interface b2 of the bluetooth chip, a second end of the light emitting diode D4 is connected to the second processor interface a2 of the processor, the second bluetooth interface b2 and the second processor interface a2 are used for data transmission between the bluetooth chip and the processor, and the light emitting diode D4 shows a frequency of the data transmission in a form of flashing.
According to a specific implementation manner of the embodiment of the present disclosure, the bluetooth module further includes:
a third inductor L3, wherein a first end of the third inductor L3 is connected with a third Bluetooth interface b3 of the Bluetooth chip;
a fifth capacitor C5, a first terminal of the fifth capacitor C5 being connected to a second terminal of the third inductor L3;
a Bluetooth transmitting antenna E1, the Bluetooth transmitting antenna E1 being connected with the second end of the fifth capacitor C5;
a fourth inductor L4, a first terminal of the fourth inductor L4 is connected to the second terminal of the third inductor L3, and a second terminal of the fourth inductor L4 is connected to ground.
According to a specific implementation manner of the embodiment of the present disclosure, referring to fig. 5, the infrared transceiver circuit includes an infrared emitting module and an infrared collecting module;
the infrared emission module comprises an infrared diode D5 and a seventh resistor R7 which are connected in series, wherein a first end of the infrared diode D5 is connected with a collector of a second switching triode Q3, a second end of the infrared diode D5 is connected with a first end of a seventh resistor R7, and a second end of the seventh resistor R7 is grounded;
the infrared acquisition module comprises a fifth resistor R5, a sixth resistor R6, an infrared induction triode Q3 and a sixth capacitor C6;
a first end of the fifth resistor R5 is connected with a collector of the switching triode, and a second end of the fifth resistor R5 is connected with an emitter of the infrared induction triode;
a first end of the sixth resistor R6 is connected to a second end of the fifth resistor R5, and a second end of the sixth resistor R6 is connected to a base end of the ir transistor;
the first end of the sixth capacitor C6 is connected to the base end of the infrared transistor, and the second end of the sixth capacitor C6 is connected to the fourth interface of the processor.
Referring to fig. 6, the embodiment of the present disclosure further includes a first pressure switch and a second pressure switch, where the first pressure switch is directly connected to the fifth interface a5 of the processor, and the on-off state of the first pressure switch can be monitored in real time through the fifth interface a5 of the processor. The second pressure switch is connected with the operational amplifier N, the ninth resistor R9 and the third switching triode Q4 in sequence. The inverting input end of the operational amplifier is connected with the base end of the third switching triode and is grounded through an eighth resistor R8.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (1)

1. A smart pen, comprising:
the first pressure switch is arranged at the tail end part of the intelligent pen, and the first pressure switch can perform switch operation in a reciprocating cycle manner;
the second pressure switch is arranged at the tail of the pen core of the intelligent pen and used for generating a trigger signal after the second pressure switch is in a conducting state under the pressure of the pen point when writing on the writing paper;
the processor is used for judging whether the first pressure switch is in a closed state or not after receiving the trigger signal generated by the second pressure switch, if so, controlling an infrared receiving and generating circuit on the intelligent pen to transmit an infrared light signal to a writing paper area of the intelligent pen, and further determining the writing trace of the intelligent pen on the writing paper by reading a reflection signal of the infrared light;
the smart pen further comprises:
the camera shooting acquisition module acquires a track formed by the pen point in the writing area after the infrared transceiving circuit transmits an infrared light signal to form track information, and the processor performs data conversion processing on the track information through a preset data processing algorithm to form a track digital signal;
a memory for storing the trace digital signals formed by the processor;
the Bluetooth module is used for sending the track digital signals stored in the memory to a target terminal after the intelligent pen is successfully in communication connection with the target terminal;
the smart pen further comprises:
the power management circuit is used for respectively supplying power to the second pressure switch, the infrared receiving and transmitting circuit, the camera shooting acquisition module, the processor, the memory and the Bluetooth module;
the power management circuit includes:
the first port is used for providing a high-level power supply signal, and is sequentially connected with a first resistor and a first inductor to form a high-level supply point;
the second port and the third port are used for providing a differential connection information channel;
a fourth port, which is used for providing a ground connection signal and is connected with the ground through a second inductor;
the high-level power supply point is connected with first ends of a first capacitor and a second capacitor which are connected in parallel, and second ends of the first capacitor and the second capacitor are connected with the ground;
the second port is connected with a first end of a second resistor, and a second end of the second resistor forms a first differential signal connection point;
the third port is connected with a first end of a third resistor, and a second end of the third resistor forms a second differential signal connection point;
the first end of the first resistor is connected with the first end of a first electrostatic discharge diode, and the second end of the first electrostatic discharge diode is connected with the ground;
the first end of the second resistor is connected with the first end of a second electrostatic discharge diode, and the second end of the second electrostatic discharge diode is connected with the ground;
the first end of the third resistor is connected with the first end of a third electrostatic discharge diode, and the second end of the third electrostatic discharge diode is connected with the ground;
the first port, the second port, the third port and the fourth port are arranged in parallel in a USB interface mode;
the bluetooth module includes:
a first end of the fourth resistor is connected with a collector of the first switching triode;
the Bluetooth chip comprises a first Bluetooth interface, a second Bluetooth interface and a third Bluetooth interface, and the first Bluetooth interface is connected with the second end of the fourth resistor and used for receiving a power supply signal;
first ends of the third capacitor and the fourth capacitor are connected with a second end of the fourth resistor, and second ends of the third capacitor and the fourth capacitor are connected with the ground;
a light emitting diode, a first end of the light emitting diode is connected with the second bluetooth interface of the bluetooth chip, a second end of the light emitting diode is connected with the second processor interface a2 of the processor, the second bluetooth interface and the second processor interface a2 are used for data transmission between the bluetooth chip and the processor, and the light emitting diode shows the frequency of data transmission in the form of flashing light;
a first end of the third inductor is connected with a third Bluetooth interface of the Bluetooth chip;
a first end of the fifth capacitor is connected with the second end of the third inductor;
the Bluetooth transmitting antenna is connected with the second end of the fifth capacitor;
a first end of the fourth inductor is connected with a second end of the third inductor, and a second end of the fourth inductor is connected with the ground;
the infrared receiving and transmitting circuit comprises an infrared transmitting module and an infrared collecting module;
the infrared emission module comprises an infrared diode and a seventh resistor which are connected in series, wherein the first end of the infrared diode is connected with the collector electrode of the second switching triode, the second end of the infrared diode is connected with the first end of the seventh resistor, and the second end of the seventh resistor is grounded;
the infrared acquisition module comprises a fifth resistor, a sixth resistor, an infrared induction triode and a sixth capacitor;
the first end of the fifth resistor is connected with the collector of the switching triode, and the second end of the fifth resistor is connected with the emitter of the infrared induction triode;
a first end of the sixth resistor is connected with a second end of the fifth resistor, and a second end of the sixth resistor is connected with a base end of the infrared induction triode;
the first end of the sixth capacitor is connected with the base end of the infrared induction triode, and the second end of the sixth capacitor is connected with the fourth interface of the processor;
the first pressure switch is directly connected with the fifth interface of the processor, the opening and closing state of the first pressure switch can be monitored in real time through the fifth interface of the processor, the second pressure switch is sequentially connected with the operational amplifier, the ninth resistor R9 and the third switching triode, wherein the inverting input end of the operational amplifier is connected with the base end of the third switching triode and is grounded through the eighth resistor R8.
CN202010690236.8A 2020-07-17 2020-07-17 Intelligent pen Active CN111796699B (en)

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CN202010690236.8A CN111796699B (en) 2020-07-17 2020-07-17 Intelligent pen
PCT/CN2020/110909 WO2022011788A1 (en) 2020-07-17 2020-08-24 Smart pen

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CN107392195A (en) * 2017-07-25 2017-11-24 深圳市迪比科电子科技有限公司 A kind of intelligent writing system

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