CN208315197U - A kind of voice control circuit of active capacitance intelligent hand drawing board - Google Patents

Abstract

The utility model provides a kind of voice control circuit of active capacitance intelligent hand drawing board, it includes voice storage chip, power switch circuit and loudspeaker, the voice storage chip is connect with the control chip of active capacitance intelligent hand drawing board, the output end of the voice storage chip is connect with loudspeaker, the input terminal of the power switch circuit is connect with the power module of the active capacitance intelligent hand drawing board, the output end of the power switch circuit is connect with the power end of voice storage chip, and the power switch circuit includes metal-oxide-semiconductor.Using the technical solution of the utility model, solves the problems, such as that existing clipboard does not have intelligent voice prompt, improve the actual experience sense of intelligent writing sheet lacked；It solves the problems, such as existing voice technology scheme handwriting pad simultaneously external power supply is not reliable during shutdown to have be easy to cause noise, significantly improve the intelligent writing experience sense of user.

Description

A kind of voice control circuit of active capacitance intelligent hand drawing board

Technical field

The utility model belongs to hand drawing board technical field more particularly to a kind of voice control of active capacitance intelligent hand drawing board Circuit processed.

Background technique

With the development of informationization technology and science and technology, user wants the input mode of the electronic equipments such as mobile phone, plate, computer Ask higher and higher, keyboard and mouse input mode have been unable to meet the requirement such as Specialty Design, drawing, minutes, are gradually inclined to In easily having a touch input equipment, it is mainly electricity that main intelligent writing plate, which is based on touch input equipment, on the market at present It hinders screen, capacitance plate, capacitance plate+electromagnetic layer and realizes that data are synchronous with 2.4G bluetooth module, former person's handwriting saves.

Existing intelligence hand drawing board adds the writing note paper of appearance belt and a built-in A5 size, by an electronics The mechanical appearance of product is evolved into an outsourcing cortex notebook, when we are in drawing, teaching, session discussing or personal and family Front yard account, only needs to push the button, and supports a key page turning, key storage, as soon as key uploads, intelligent writing plate can be by your hand-written Content transformation is " lively " digital document.Using corresponding APP application program, you can support Bluetooth Your notes and grass are arranged, edit and shared on the iOS (Apple Macintosh operating system) or Android (Android) equipment of (bluetooth) Figure.

However, meeting the capacitance touching control screen of the functional requirements such as professional designer, drawing, efficient signature in the market not Subsidiary lively effect sound, when we wonder equipment either with or without operate in next step, without effective methods To distinguish.For example, professional designer when clipboard is designed drawing to carry out page turn over operation and drawing can synchronize or Asynchronous transmission can obtain effective sound effect or prompting into electronic equipments such as mobile phone, plate, computers, in the market be currently not There is similar product to meet this kind of demand.

Utility model content

Against the above technical problems, the utility model discloses a kind of voice control of active capacitance intelligent hand drawing board electricity Road, solve existing clipboard is doing page turning and storage yes " mute's effect ", makes user in handwriting pad design drawing when progress The sound of flipbook is attached to when operating in next step, to facilitate user to obtain clear prompt during using clipboard.

In this regard, the technical solution of the utility model are as follows:

A kind of voice control circuit of active capacitance intelligent hand drawing board comprising voice storage chip, power switch electricity Road and loudspeaker, the voice storage chip are connect with the control chip of active capacitance intelligent hand drawing board, the voice storage The output end of chip is connect with loudspeaker, the input terminal of the power switch circuit and the active capacitance intelligent hand drawing board Power module connection, the output end of the power switch circuit are connect with the power end of voice storage chip, the power switch Circuit includes metal-oxide-semiconductor.

The model SC010G of the voice storage chip as a further improvement of the utility model, the sound storage Deposit chip include the end OKY2/NC, the end OKY1/DATA, the end IO3/RST, the end IO4/BUSY, the end VSS, the end PWM1, the end PWM2/DAC, Vdd terminal, the end OKY1/DATA, the end IO3/RST, the end IO4/BUSY the control core with active capacitance intelligent hand drawing board respectively The output end of piece connects, and the end the VSS ground connection, the end PWM1, the end PWM2/DAC are connect with loudspeaker respectively, the vdd terminal It is connect with one end of the output end of power switch circuit, capacitor C295, the other end ground connection of the capacitor C295.

It adopts this technical solution, SC010G voice storage chip is that a kind of sound quality is high, and at low cost, performance is stablized, anti-interference By force, control is simple, and the few one time programming of peripheral cell (OTP) speech chip enters formula OTP using the newest down in Taiwan EPROM (disposable programmable electric programmable read-only memory) framework, has 2 input ports, 2 I/O feet, audio output There is PWM and DAC mode.10 seconds voices can be recorded in 6KHz sample frequency maximum.Two kinds of control formulas, key mould Formula maximum can divide 63 sections of voices, and serial pulses control model maximum can divide 62 sections of voice that can provide different voices Material, which is write, to be recorded into chip ROM, while our power ends when design in SC010G increase CJ2301MOS pipe power supply Switching circuit controls the power supply of SC010G, mainly for handwriting pad during shutdown external power supply it is not reliable to SC010G power supply and Cause the noise caused.

The power switch circuit includes including metal-oxide-semiconductor Q3, resistance R53, electricity as a further improvement of the utility model, The pole D of resistance R54 and resistance R893, the metal-oxide-semiconductor Q3 are connect after being connected in series with resistance R54 with vdd terminal, the S of the metal-oxide-semiconductor Q3 Parallel resistance R893 between pole and the pole G, the power module connection of the active capacitance intelligent hand drawing board, the G of the metal-oxide-semiconductor Q3 Pole is connect after connecting with resistance R53 with the switch of the active capacitance intelligent hand drawing board.Preferably, the metal-oxide-semiconductor Q3 is P ditch Road metal-oxide-semiconductor.

The model CJ2301MOS pipe of the metal-oxide-semiconductor Q3 as a further improvement of the utility model, the resistance The resistance value of R893 is 10K Ω.

The control chip of the active capacitance intelligent hand drawing board is MCU, institute as a further improvement of the utility model, Stating MCU includes the end PB0, the end PB1, the end PB2, and the end PB0 is connect by resistance R894 with the end OKY1/DATA, and the end PB1 is logical It crosses resistance R895 to connect with the end IO3/RST, the end PB2 is connect by resistance R896 with IO4/BUSY.

As a further improvement of the utility model, the resistance R894, resistance R895, resistance R896 resistance value be 470 Ω。

The loudspeaker is piezoelectric buzzer as a further improvement of the utility model,.Piezoelectric buzzer is one The existing general sounding body device using piezoelectric ceramics as electroacoustic transducer of kind, piezoelectric material is pasted on sheet metal, when After piezoelectric material and sheet metal both ends are applied with a voltage, because of piezoelectric effect, piezo will generate mechanically deform and send out The sound out, structure is simple, and effect is reliable.

Compared with prior art, the utility model has the following beneficial effects:

First, using the technical solution of the utility model, solve the problems, such as that existing clipboard does not have intelligent voice prompt, Improve the actual experience sense of intelligent writing sheet lacked；It is outer during shutdown to solve existing voice technology scheme handwriting pad simultaneously Portion's power supply not reliable the problem of having be easy to cause noise.The technical solution of the utility model combines actual site response effect, makes User obtains physical feedback signal more true to nature, significantly improves the intelligence of user during using handwriting pad Writing experience sense.

Second, using the technical solution of the utility model, control circuit is by MCU(single-chip microcontroller) in DATA (data) Different number of pulses is sent on line to achieve the purpose that control voice address, which has control port few, controllably The advantages that voice address quantity processed is more, and take up little area, it is at low cost.

Detailed description of the invention

Fig. 1 is a kind of circuit diagram of the voice control circuit of active capacitance intelligent hand drawing board of the utility model.

Fig. 2 is a kind of circuit diagram of the power switch circuit of embodiment of the utility model.

Fig. 3 is a kind of voice control timing diagram of MCU of embodiment of the utility model a kind of.

Specific embodiment

With reference to the accompanying drawing, the preferably embodiment of the utility model is described in further detail.

As depicted in figs. 1 and 2, a kind of voice control circuit of active capacitance intelligent hand drawing board comprising voice storage The control chip of chip, power switch circuit and loudspeaker, the voice storage chip and active capacitance intelligent hand drawing board connects Connect, the output end of the voice storage chip is connect with loudspeaker, the input terminal of the power switch circuit with it is described active The power module of capacitance intelligent hand drawing board connects, and the output end of the power switch circuit and the power end of voice storage chip connect It connects.The control chip of the active capacitance intelligent hand drawing board is MCU, and the MCU includes the end PB0, the end PB1, the end PB2, described The model SC010G of voice storage chip, the voice storage chip include the end OKY2/NC, the end OKY1/DATA, IO3/RST End, the end IO4/BUSY, the end VSS, the end PWM1, the end PWM2/DAC, vdd terminal, the end PB0 pass through resistance R894 and OKY1/DATA End connection, the end PB1 are connect by resistance R895 with the end IO3/RST, and the end PB2 is connected by resistance R896 and IO4/BUSY It connects.The end the VSS ground connection, the end PWM1, the end PWM2/DAC are connect with loudspeaker respectively, the vdd terminal and power switch electricity One end connection of the output end, capacitor C295 on road, the other end ground connection of the capacitor C295.

The power switch circuit includes including metal-oxide-semiconductor Q3, resistance R53, resistance R54 and resistance R893, the metal-oxide-semiconductor Q3 The pole D and resistance R54 be connected in series after connect with vdd terminal, parallel resistance R893 between the pole S and the pole G of the metal-oxide-semiconductor Q3, institute State active capacitance intelligent hand drawing board power module connection, the pole G of the metal-oxide-semiconductor Q3 connect with resistance R53 after with the master The switching signal Power_off connection of dynamic formula capacitance intelligent hand drawing board.When Power_off is 0, speech chip works；When Power_off is 1, and speech chip does not work.

The model CJ2301MOS of the metal-oxide-semiconductor Q3 is managed, and the resistance value of the resistance R893 is 10K Ω.The resistance R894, resistance R895, resistance R896 resistance value be 470 Ω.The loudspeaker is piezoelectric buzzer.

SC010G enters formula OTP EPROM(disposable programmable electric programmable read-only memory using the newest down in Taiwan) frame Structure, has 2 input ports, 2 I/O feet, and audio output has PWM and DAC mode.6KHz sample frequency maximum can be with Record 10 seconds voices.Two kinds of control formulas, keystroke pattern maximum can divide 63 sections of voices, and serial pulses control model maximum can With point 62 sections of voices.Different voice data can be write and record into chip ROM, while be increased in the power end of SC010G CJ2301MOS pipe power switch circuit controls the power supply of SC010G, and mainly for handwriting pad, external power supply is unstable during shutdown When the noise that initiation is powered and caused to SC010G.S is connected when being switching characteristic Vg > Vs of P-channel metal-oxide-semiconductor because of CJ2301, when Power off control foot is low level when MCU shuts down, so reserving a pull-up resistor in G foot keeps high level state by it, What is opened as MCU is that MCU exports a low level by force metal-oxide-semiconductor is allowed to be connected.Control circuit is by MCU(single-chip microcontroller) Different number of pulses is sent on DATA (data) line to achieve the purpose that control voice address, which has control The advantages that port is few, can control voice address quantity more.

Fig. 3 is a kind of voice control timing diagram of the MCU of the present embodiment, also can according to need the other voice controls of selection Timing processed.As shown in figure 3, Serial Control mode is by sending different number of pulses on DATA line to reach control language The purpose of sound address.When such as serial PWM control, the high level RESET signal of 100us is first sent, 100us is waited DATA sends the pulse signal of N 100us afterwards, waits 200us to start with playing N after having sent pulse signal Location voice, BUSY foot export high level.

Existing clipboard scheme in the market is all based on capacitor board and writes acquisition+LCD display+Bluetooth transmission, does not have A to be applicable to the clipboard sounding device circuit that voice prompting is auxiliary, the comparison of voice control piezoelectric buzzer is present Voice buzzer circuit on the market is largely to use electromagnetic coil and magnet periodically vibration sounding, the structure of which Volume is big, and thickness is high, and at high cost, voice control piezoelectric buzzer circuit is small in size, and thickness is thin (only 0.8mm), at low cost, Drive voltage range is big.Control speech chip mode is used by key control on the market, because being directed to voice on the market What storage chip was done is exactly to play the store voice data of all addresses between one, and the present embodiment passes through MCU Serial Control voice core Tablet mode can determine the address voice segments of storage according to the length of time of external interrupt.

The specific embodiment of the above is the better embodiment of the utility model, and it is practical new not to limit this with this The specific implementation range of type, the scope of the utility model includes being not limited to present embodiment, all according to the utility model Shape, structure made by equivalence changes it is within the protection scope of the present utility model.

Claims (7)

1. a kind of voice control circuit of active capacitance intelligent hand drawing board, it is characterised in that: it includes voice storage chip, electricity Source switching circuit and loudspeaker, the voice storage chip is connect with the control chip of active capacitance intelligent hand drawing board, described The output end of voice storage chip is connect with loudspeaker, the input terminal of the power switch circuit and the active capacitance intelligent The power module of hand drawing board connects, and the output end of the power switch circuit is connect with the power end of voice storage chip, described Power switch circuit includes metal-oxide-semiconductor.

2. the voice control circuit of active capacitance intelligent hand drawing board according to claim 1, it is characterised in that: the sound The model SC010G of sound storage chip, the voice storage chip include the end OKY2/NC, the end OKY1/DATA, the end IO3/RST, The end IO4/BUSY, the end VSS, the end PWM1, the end PWM2/DAC, vdd terminal, the end OKY1/DATA, the end IO3/RST, the end IO4/BUSY It is connect respectively with the output end of the control chip of active capacitance intelligent hand drawing board,

The end the VSS ground connection, the end PWM1, the end PWM2/DAC are connect with the both ends of loudspeaker respectively, the vdd terminal and power supply One end connection of the output end, capacitor C295 of switching circuit, the other end ground connection of the capacitor C295.

3. the voice control circuit of active capacitance intelligent hand drawing board according to claim 2, it is characterised in that: the electricity Source switching circuit includes that metal-oxide-semiconductor Q3, resistance R53, resistance R54 and resistance R893, the pole D of the metal-oxide-semiconductor Q3 are connected with resistance R54 It is connect after connection with vdd terminal, parallel resistance R893 between the pole S and the pole G of the metal-oxide-semiconductor Q3, the active capacitance intelligent hand Draw plate power module connection, the pole G of the metal-oxide-semiconductor Q3 connect with resistance R53 after with the active capacitance intelligent hand drawing board Switch connection.

4. the voice control circuit of active capacitance intelligent hand drawing board according to claim 3, it is characterised in that: described The model CJ2301 metal-oxide-semiconductor of metal-oxide-semiconductor Q3, the resistance value of the resistance R893 are 10K Ω.

5. the voice control circuit of active capacitance intelligent hand drawing board according to claim 3, it is characterised in that: the master The control chip of dynamic formula capacitance intelligent hand drawing board is MCU, and the MCU includes the end PB0, the end PB1, the end PB2, and the end PB0 passes through Resistance R894 is connect with the end OKY1/DATA, and the end PB1 is connect by resistance R895 with the end IO3/RST, and the end PB2 passes through Resistance R896 is connect with IO4/BUSY.

6. the voice control circuit of active capacitance intelligent hand drawing board according to claim 5, it is characterised in that: the electricity Hinder R894, resistance R895, resistance R896 resistance value be 470 Ω.

7. the voice control circuit of active capacitance intelligent hand drawing board described in any one according to claim 1 ~ 6, feature Be: the loudspeaker includes piezoelectric buzzer.