CN109922409A - A kind of charging pile voice playing circuit and its control method - Google Patents
A kind of charging pile voice playing circuit and its control method Download PDFInfo
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- CN109922409A CN109922409A CN201711336363.2A CN201711336363A CN109922409A CN 109922409 A CN109922409 A CN 109922409A CN 201711336363 A CN201711336363 A CN 201711336363A CN 109922409 A CN109922409 A CN 109922409A
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Abstract
The present invention relates to a kind of charging pile voice playing circuit and its control methods, charging pile voice playing circuit includes single machine unit, storage unit, speech decoding unit, power amplifier unit and loudspeaker, single machine unit, storage unit are connected with speech decoding unit respectively, the output end of speech decoding unit is connected with the input terminal of power amplifier unit, and the output end of power amplifier unit is connected with loudspeaker.Control method are as follows: when needing to play, single machine unit sends control signal to speech decoding unit, speech decoding unit reads corresponding audio data and is decoded from storage unit, it gives and is conveyed to loudspeaker after power amplifier unit amplifies again, drive the speaker, which makes a sound, completes voice broadcasting.Single-chip microcontroller of the present invention need to only send control instruction, directly read audio data from storage unit by speech decoding unit, greatly save mcu resource, therefore it need to only select the general single-chip microcontroller of function, it significantly reduces costs, and control is fairly simple, is advantageously implemented and safeguards.
Description
Technical field
The present invention relates to a kind of charging pile more particularly to a kind of charging pile voice playing circuit and its control methods.
Background technique
With the development of electric car, the demand of the charging pile to charge to electric automobile power battery is increasing.
There is better man-machine interaction when in order to charge, charging pile has sound prompt function mostly, it is realized by voice playing circuit,
The digital audio information for needing to play is read from memory by single-chip microcontroller, is transmitted further to universal audio decoding chip, general sound
Digital audio information is transferred to audio-frequency information by frequency decoding chip, then is sent to power amplifier and amplified, drive the speaker sounding,
Voice is completed to play.Although above mentioned voice playing circuit is widely used, but have the following disadvantages: due to single-chip microcontroller needs
It sends a large amount of digital audio information to audio decoder chip, therefore excessive mcu resource can be consumed, single-chip microcontroller is simultaneously
It also needs to undertake the demand of other functions, therefore has to select single-chip microcontroller with better function, to cause the raising of cost, resource
Waste, and control it is more many and diverse, be unfavorable for realize and safeguard.
Summary of the invention
In order to solve the above-mentioned technical problem the present invention, provides a kind of charging pile voice playing circuit and its control method,
The resource of single-chip microcontroller is greatlyd save, therefore need to only select the general single-chip microcontroller of function, is significantly reduced costs, and is controlled simpler
It is single, it is advantageously implemented and safeguards.
Above-mentioned technical problem of the invention is mainly to be addressed by following technical proposals: charging pile language of the invention
Sound playing circuit, including single machine unit, storage unit, speech decoding unit, power amplifier unit and loudspeaker, single machine unit,
Storage unit is connected with speech decoding unit respectively, and the output end of speech decoding unit is connected with the input terminal of power amplifier unit, function
The output end for putting unit is connected with loudspeaker.
Preferably, the speech decoding unit includes chip of speech decoder U3, chip of speech decoder U3 is used
WT588D speech chip；The storage unit includes storage chip U1, and storage chip U1 stores core using MX25L3236FM2I
Piece；1 foot, 2 feet, 3 feet, 4 feet of chip of speech decoder U3 are connected with 2 feet of storage chip U1,5 feet, 1 foot, 6 feet respectively, storage
3 feet of chip U1 connect 3.3V voltage, the 4 feet ground connection of storage chip U1, and 7 feet and 8 feet of storage chip U1 connect 3.3V voltage, deposit
Store up the 8 foot meridian capacitor C1 ground connection of chip U1；7 feet, 8 feet, 9 feet, 11 feet and 14 feet of chip of speech decoder U3 respectively with it is described
Single machine unit is connected, and 5 feet, 10 feet and 17 feet of chip of speech decoder U3 connect 3.3V voltage, and the 10 of chip of speech decoder U3
Foot meridian capacitor C5 ground connection, 15 feet of chip of speech decoder U3 and 19 feet ground connection, 13 feet, 12 feet of chip of speech decoder U3 pass through respectively
Resistance R4, capacitor C6 ground connection, 16 feet of chip of speech decoder U3 are connected with the input terminal of the power amplifier unit, and tone decoding
16 feet of chip U3 are grounded through the parallel circuit of resistance R5 and capacitor C4.
Preferably, the power amplifier unit includes power amplifier chips U2, power amplifier chips U2 uses PAM8302AADCR power amplifier
Chip；1 foot of power amplifier chips U2 is connected through resistance R1 with the single machine unit, 3 feet of power amplifier chips U2 through resistance R2 and
Capacitor C2 ground connection, 4 feet of power amplifier chips U2 are connected through resistance R3 and capacitor C3 with the output end of the speech decoding unit, function
Put 5 feet of chip U2,8 feet are connected with the loudspeaker respectively, 6 feet of power amplifier chips U2 connect 5V voltage, the 7 of power amplifier chips U2
Foot ground connection.
The control method of charging pile voice playing circuit of the invention are as follows: be previously stored charging in the storage unit
Stake needs the audio data played, and when needing to play, the single machine unit sends control signal to the tone decoding
Unit, speech decoding unit reads corresponding audio data from the storage unit, and carries out to the audio data of reading
Decoding is then passed to the power amplifier unit, is conveyed to the loudspeaker again through power amplifier unit amplification, drive the speaker issues
Sound is completed voice and is played.
The beneficial effects of the present invention are: single-chip microcontroller need to only send corresponding control instruction, by speech decoding unit directly from
Storage unit reads corresponding audio data, therefore greatlys save the resource of single-chip microcontroller, therefore need to only select the general monolithic of function
Machine significantly reduces costs, and control is fairly simple, is advantageously implemented and safeguards.
Detailed description of the invention
Fig. 1 is a kind of circuit theory connection block diagram of the invention.
Fig. 2 is a kind of circuit diagram of the invention.
1. single machine unit in figure, 2. storage units, 3. speech decoding units, 4. power amplifier units, 5. loudspeakers.
Specific embodiment
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.
Embodiment: a kind of charging pile voice playing circuit of the present embodiment, as shown in Figure 1, including single machine unit 1, depositing
Storage unit 2, speech decoding unit 3, power amplifier unit 4 and loudspeaker 5, single machine unit, storage unit respectively with tone decoding list
Member is connected, and the output end of speech decoding unit is connected with the input terminal of power amplifier unit, the output end and loudspeaker phase of power amplifier unit
Even.
As shown in Fig. 2, speech decoding unit 3 includes chip of speech decoder U3, chip of speech decoder U3 uses WT588D language
Sound chip；Storage unit 2 includes storage chip U1, and storage chip U1 uses MX25L3236FM2I storage chip；Power amplifier unit 4
PAM8302AADCR power amplifier chips are used including power amplifier chips U2, power amplifier chips U2；Single machine unit 1 includes the general list of function
Piece machine.1 foot, 2 feet, 3 feet, 4 feet of chip of speech decoder U3 are connected with 2 feet of storage chip U1,5 feet, 1 foot, 6 feet respectively, deposit
3 feet of storage chip U1 connect 3.3V voltage, the 4 feet ground connection of storage chip U1, and 7 feet and 8 feet of storage chip U1 connect 3.3V voltage,
The 8 foot meridian capacitor C1 of storage chip U1 are grounded；7 feet, 8 feet, 9 feet, 11 feet and 14 feet of chip of speech decoder U3 are respectively and monolithic
Machine is connected, and 5 feet, 10 feet and 17 feet of chip of speech decoder U3 connect 3.3V voltage, and 10 foot meridian capacitors of chip of speech decoder U3
C5 ground connection, 15 feet of chip of speech decoder U3 and 19 feet ground connection, 13 feet of chip of speech decoder U3,12 feet respectively through resistance R4,
Capacitor C6 ground connection, the 16 foot meridian capacitor C3 and resistance R3 of chip of speech decoder U3 are connected with 4 feet of power amplifier chips U2, and voice solution
16 feet of code chip U3 are grounded through the parallel circuit of resistance R5 and capacitor C4.1 foot of power amplifier chips U2 is through resistance R1 and single-chip microcontroller
It is connected, 3 feet of power amplifier chips U2 are grounded through resistance R2 and capacitor C2, and 5 feet of power amplifier chips U2,8 feet are respectively with loudspeaker LS1's
Two input pins are connected, and 6 feet of power amplifier chips U2 connect 5V voltage, the 7 feet ground connection of power amplifier chips U2.
The control method of above-mentioned charging pile voice playing circuit are as follows: be previously stored charging pile in storage unit and needed to play
Various audio datas, when needing to play, single-chip microcontroller sends control signal to speech decoding unit, and speech decoding unit is from storage
Corresponding audio data is read in unit, and the audio data of reading is decoded, and power amplifier unit is then passed to, through power amplifier list
Member amplification is conveyed to loudspeaker again, and drive the speaker makes a sound, and completes the voice broadcasting during charging pile charging operations.
In the present invention, single-chip microcontroller need to only send corresponding control instruction, without reading a large amount of digital audio information, by language
Sound decoding unit directly reads corresponding audio data from storage unit, send power amplifier unit to amplify again after decoding, therefore save significantly
The resource of single-chip microcontroller is saved, therefore the general single-chip microcontroller of function need to only be selected to can be achieved with, is significantly reduced costs, and is controlled simpler
It is single, it is advantageously implemented and safeguards.
Claims (4)
1. a kind of charging pile voice playing circuit, it is characterised in that including single machine unit, storage unit, speech decoding unit,
Power amplifier unit and loudspeaker, single machine unit, storage unit are connected with speech decoding unit respectively, the output of speech decoding unit
End is connected with the input terminal of power amplifier unit, and the output end of power amplifier unit is connected with loudspeaker.
2. a kind of charging pile voice playing circuit according to claim 1, it is characterised in that the speech decoding unit
WT588D speech chip is used including chip of speech decoder U3, chip of speech decoder U3；The storage unit includes storage core
Piece U1, storage chip U1 use MX25L3236FM2I storage chip；1 foot of chip of speech decoder U3,2 feet, 3 feet, 4 feet difference
It is connected with 2 feet of storage chip U1,5 feet, 1 foot, 6 feet, 3 feet of storage chip U1 connect 3.3V voltage, and 4 feet of storage chip U1 connect
Ground, 7 feet and 8 feet of storage chip U1 connect 3.3V voltage, the 8 foot meridian capacitor C1 ground connection of storage chip U1；Chip of speech decoder
7 feet, 8 feet, 9 feet, 11 feet and 14 feet of U3 are connected with the single machine unit respectively, 5 feet, 10 feet of chip of speech decoder U3
And 17 foot connect 3.3V voltage, and the 10 foot meridian capacitor C5 ground connection of chip of speech decoder U3,15 feet of chip of speech decoder U3 and 19
Foot ground connection, 13 feet, 12 feet of chip of speech decoder U3 are grounded through resistance R4, capacitor C6 respectively, 16 feet of chip of speech decoder U3
It is connected with the input terminal of the power amplifier unit, and parallel circuit of 16 feet of chip of speech decoder U3 through resistance R5 and capacitor C4
Ground connection.
3. a kind of charging pile voice playing circuit according to claim 1, it is characterised in that the power amplifier unit includes
Power amplifier chips U2, power amplifier chips U2 use PAM8302AADCR power amplifier chips；1 foot of power amplifier chips U2 is through resistance R1 and described
Single machine unit is connected, and 3 feet of power amplifier chips U2 are grounded through resistance R2 and capacitor C2,4 feet of power amplifier chips U2 through resistance R3 and
Capacitor C3 is connected with the output end of the speech decoding unit, 5 feet of power amplifier chips U2,8 feet respectively with the loudspeaker
It is connected, 6 feet of power amplifier chips U2 connect 5V voltage, the 7 feet ground connection of power amplifier chips U2.
4. a kind of control method of charging pile voice playing circuit as described in claim 1, it is characterised in that the storage
The audio data that charging pile needs to play is previously stored in unit, when needing to play, the single machine unit sends control
Signal gives the speech decoding unit, and speech decoding unit reads corresponding audio data from the storage unit, and
The audio data of reading is decoded, the power amplifier unit is then passed to, is amplified described in being conveyed to again through power amplifier unit
Loudspeaker, drive the speaker make a sound, and complete voice and play.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711336363.2A CN109922409A (en) | 2017-12-13 | 2017-12-13 | A kind of charging pile voice playing circuit and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711336363.2A CN109922409A (en) | 2017-12-13 | 2017-12-13 | A kind of charging pile voice playing circuit and its control method |
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| Publication Number | Publication Date |
|---|---|
| CN109922409A true CN109922409A (en) | 2019-06-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711336363.2A Pending CN109922409A (en) | 2017-12-13 | 2017-12-13 | A kind of charging pile voice playing circuit and its control method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0735782A2 (en) * | 1995-03-31 | 1996-10-02 | Kabushiki Kaisha Toshiba | Motion picture play apparatus capable of returning from trick play to normal play |
| US20040252593A1 (en) * | 2003-06-10 | 2004-12-16 | Canon Kabushiki Kaisha | Recording apparatus |
| CN201600912U (en) * | 2010-03-05 | 2010-10-06 | 杭州来同科技有限公司 | Music player with flashing function |
| CN205507386U (en) * | 2016-03-25 | 2016-08-24 | 安徽理工大学 | Intelligence reputation alarm clock |
| CN206590701U (en) * | 2017-03-20 | 2017-10-27 | 南通通洋机电制造有限公司 | Elevator voice system |
-
2017
- 2017-12-13 CN CN201711336363.2A patent/CN109922409A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0735782A2 (en) * | 1995-03-31 | 1996-10-02 | Kabushiki Kaisha Toshiba | Motion picture play apparatus capable of returning from trick play to normal play |
| US20040252593A1 (en) * | 2003-06-10 | 2004-12-16 | Canon Kabushiki Kaisha | Recording apparatus |
| CN201600912U (en) * | 2010-03-05 | 2010-10-06 | 杭州来同科技有限公司 | Music player with flashing function |
| CN205507386U (en) * | 2016-03-25 | 2016-08-24 | 安徽理工大学 | Intelligence reputation alarm clock |
| CN206590701U (en) * | 2017-03-20 | 2017-10-27 | 南通通洋机电制造有限公司 | Elevator voice system |
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Application publication date: 20190621 |
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| RJ01 | Rejection of invention patent application after publication |