CN210666710U

CN210666710U - Anti-false touch electronic pen

Info

Publication number: CN210666710U
Application number: CN201921892363.5U
Authority: CN
Inventors: 黄雄兴; 曹新欣
Original assignee: Shenzhen Zhicheng Lichuang Technology Co ltd
Current assignee: Shenzhen Zhicheng Lichuang Technology Co ltd
Priority date: 2019-11-05
Filing date: 2019-11-05
Publication date: 2020-06-02
Anticipated expiration: 2029-11-05

Abstract

The embodiment of the utility model discloses prevent mistake and touch electronic pen, including nib, battery, switch circuit, boost circuit, waveform generation circuit and output circuit, wherein, switch circuit is connected with battery, boost circuit, waveform generation circuit electricity, and output circuit is connected with boost circuit, waveform generation circuit and nib electricity, and waveform generation circuit comprises the singlechip, and waveform generation circuit control output circuit exports the signal of predetermineeing the frequency to the nib. The utility model discloses a singlechip output preset frequency's signal removes the touch-control screen that drives high-pressure positive and negative signal and pass through nib touch-control panel computer, realizes that tiny nib controls the touch-control screen, can more accurate touch-control, writes to experience better than people's finger touch-control or ordinary stylus; due to the adoption of the signal with the preset frequency, the function of preventing mistaken touch can be realized, if the screen receives the signal with the preset frequency, the touch signal of the fingers of a person is shielded, and the person can write normally even holding the pen by hand and placing the pen on the screen.

Description

Anti-false touch electronic pen

Technical Field

The utility model relates to an electronic pen technical field especially relates to a prevent mistake and touch electronic pen.

Background

Many capacitance pens in the market are connected with a simulation finger through a conductive pen point and a hand to control a touch screen mobile phone or a touch screen computer, have no function of preventing mistaken touch, are large in pen point and cannot achieve accurate writing.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a technical problem that will solve provides a prevent mistake and touches electronic pen to make the solution mistake touch the problem.

In order to solve the technical problem, the embodiment of the utility model provides a prevent mistake and touch electronic pen is provided, including nib, battery, still include switch circuit, boost circuit, waveform generation circuit and output circuit, wherein, switch circuit is connected with battery, boost circuit, waveform generation circuit electricity, and output circuit is connected with boost circuit, waveform generation circuit and nib electricity, and waveform generation circuit comprises the singlechip, and waveform generation circuit control output circuit exports the signal of predetermineeing the frequency to the nib.

Furthermore, the singlechip is an 8-bit singlechip, a serial communication interface of the singlechip is connected with the output circuit, a VDD pin of the singlechip is connected with the power switch circuit, a GND pin of the singlechip is grounded, and the VDD pin and the GND pin are connected through a capacitor.

Further, the power switch circuit comprises a field effect transistor M1 and a switch transistor Q3, the field effect transistor M1 is connected with the positive electrode of the battery, the VDD pin of the single chip microcomputer and the booster circuit, and the B electrode and the C electrode of the switch transistor Q3 are respectively connected with the negative electrode of the battery and the field effect transistor M1 through a resistor.

Further, the boosting circuit is composed of a boosting IC that converts 3.7V to 24V.

Furthermore, the output circuit is composed of a switch tube Q1 and a switch tube Q2, the B pole of the switch tube Q1 and the B pole of the switch tube Q2 are respectively connected with the single chip microcomputer through a capacitor, the C poles of the switch tube Q1 and the switch tube Q2 are externally connected with a pen point through a resistor, and the E pole of the switch tube Q1 and the E pole of the switch tube Q2 are respectively connected with the booster circuit through a resistor.

The utility model has the advantages that: the utility model discloses a singlechip output preset frequency's signal removes the touch-control screen that drives high-pressure positive and negative signal and pass through nib touch-control panel computer, realizes that tiny nib controls the touch-control screen, can more accurate touch-control, writes to experience better than people's finger touch-control or ordinary stylus; due to the adoption of the signal with the preset frequency, the function of preventing mistaken touch can be realized, if the screen receives the signal with the preset frequency, the touch signal of a finger of a person (generally, the commercial power frequency is 50 HZ) is shielded, and the purpose that the person can normally write when holding the pen on the screen is realized.

Drawings

Fig. 1 is a schematic structural view of an electronic pen for preventing accidental touch according to an embodiment of the present invention.

Fig. 2 is a circuit diagram of the electronic pen for preventing accidental touch according to the embodiment of the present invention.

Detailed Description

It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict, and the present invention is further described in detail with reference to the accompanying drawings and specific embodiments.

In the embodiment of the present invention, if there is directional indication (such as upper, lower, left, right, front, and rear … …) only for explaining the relative position relationship between the components and the motion situation under a certain posture (as shown in the drawing), if the certain posture is changed, the directional indication is changed accordingly.

In addition, the descriptions of the first, second, etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

Referring to fig. 1-2, an electronic pen for preventing erroneous touch according to an embodiment of the present invention includes a pen nib, a battery, a power switch circuit, a voltage boost circuit, a waveform generation circuit, and an output circuit.

The power switch circuit is electrically connected with the battery, the booster circuit and the waveform generating circuit, the output circuit is electrically connected with the booster circuit, the waveform generating circuit and the pen point, the waveform generating circuit is composed of a single chip microcomputer, and the waveform generating circuit controls the output circuit to output a signal with preset frequency to the pen point. The preset frequency is preferably 484.8 KHz. The booster circuit boosts the low voltage of 3.7V of the battery and outputs two paths of positive and negative 24V voltages.

As an implementation mode, the singlechip is an 8-bit singlechip, a serial communication interface (IO port) of the singlechip is connected with an output circuit, a VDD pin of the singlechip is connected with a power switch circuit, a GND pin of the singlechip is grounded, and the VDD pin and the GND pin are connected through a capacitor C9.

As an implementation mode, the power switch circuit comprises a field effect transistor M1 and a switch transistor Q3, wherein the field effect transistor M1 is connected with the positive electrode of the battery, the VDD pin of the single chip microcomputer and the booster circuit, and the B electrode and the C electrode of the switch transistor Q3 are respectively connected with the negative electrode of the battery and the field effect transistor M1 through a resistor.

In one embodiment, the boost circuit is composed of a boost IC that converts 3.7V to plus or minus 24V.

As an implementation mode, the output circuit is composed of a switch tube Q1 and a switch tube Q2, the B pole of the switch tube Q1 and the B pole of the switch tube Q2 are respectively connected with the single chip microcomputer through a capacitor, the C poles of the switch tube Q1 and the switch tube Q2 are externally connected with a pen point through a resistor, and the E pole of the switch tube Q1 and the E pole of the switch tube Q2 are respectively connected with the positive pole and the negative pole of the boosting circuit through resistors.

The utility model discloses a theory of operation does: the waveform generating circuit generates 484.8KHz waveform signals to control the switching tubes Q1 and Q2, and the control output circuit outputs 484.8KHz positive and negative 24V signals to a pen point control panel or a mobile phone touch screen at an output end.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a prevent mistake and touch electronic pen, includes nib, battery, its characterized in that still includes switch circuit, boost circuit, waveform generation circuit and output circuit, and wherein, switch circuit is connected with battery, boost circuit, waveform generation circuit electricity, and output circuit is connected with boost circuit, waveform generation circuit and nib electricity, and waveform generation circuit comprises the singlechip, and waveform generation circuit control output circuit exports the signal of predetermineeing the frequency to the nib.

2. The electronic pen as claimed in claim 1, wherein the single chip microcomputer is an 8-bit single chip microcomputer, the serial communication interface of the single chip microcomputer is connected to the output circuit, the VDD pin of the single chip microcomputer is connected to the power switch circuit, the GND pin of the single chip microcomputer is grounded, and the VDD pin and the GND pin are connected through a capacitor.

3. The electronic pen as claimed in claim 1, wherein the power switch circuit comprises a fet M1 and a switch Q3, the fet M1 is connected to the positive electrode of the battery, the VDD pin of the mcu, and the boost circuit, and the B and C electrodes of the switch Q3 are connected to the negative electrode of the battery and the fet M1 respectively through a resistor.

4. The electronic pen of claim 1, wherein the boost circuit is composed of a boost IC that converts 3.7V to 24V.

5. The electronic pen as claimed in claim 1, wherein the output circuit comprises a switch Q1 and a switch Q2, the B pole of the switch Q1 and the B pole of the switch Q2 are respectively connected to the single chip microcomputer through a capacitor, the C poles of the switch Q1 and the switch Q2 are externally connected to the pen tip through a resistor, and the E pole of the switch Q1 and the E pole of the switch Q2 are respectively connected to the boost circuit through a resistor.