CN201577184U - Car horn volume control device based on AVR singlechip - Google Patents
Car horn volume control device based on AVR singlechip Download PDFInfo
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- CN201577184U CN201577184U CN 200920245737 CN200920245737U CN201577184U CN 201577184 U CN201577184 U CN 201577184U CN 200920245737 CN200920245737 CN 200920245737 CN 200920245737 U CN200920245737 U CN 200920245737U CN 201577184 U CN201577184 U CN 201577184U
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- volume control
- car horn
- chip microcomputer
- sound
- control device
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Abstract
The utility model discloses a car horn volume control device based on an AVR singlechip, comprising a sound collection unit, a sound processing unit, a volume control unit and a car horn, wherein the sound collection unit, the sound processing unit and the volume control unit are connected in sequence, and the volume control unit is connected with the car horn. According to external environmental sound information collected by the sound collection unit, the car horn volume control device judges whether a car is in a noisy street, a quiet suburb or a silent night, therefore controlling the car horn to emit high, medium or low-intensity horn volume. The car horn volume control device has the characteristic of simple circuit, rapid response, accurate control, low cost, and the like.
Description
Technical field
The utility model relates to vehicle intellectualized control field, relates in particular to a kind of car horn sound volume control device based on the AVR single-chip microcomputer.
Technical background
Loudspeaker are elements of automobile, but in recent years because the noise pollution that car horn produced has caused people's very big concern, therefore need control the size of car horn volume, need regulate the volume of car horn especially according to the size of external environmental sounds.When on daytime bustling with vehicles, it is big that the volume of car horn can become; When at the night of quietness, it is smaller that the volume of car horn will become, thereby pollute to reduce unnecessary noise.
The method of automobile horn volume control at present mainly contains two kinds.A kind of is to control volume according to the dynamics of honking.The driver is little according to environment, vehicle and personnel's situation, flicking horn button volume, heavily by then giving great volume.This method is artificial control, and the one driver is difficult to the size of grasp dynamics, and the mood that is exactly the driver in addition can have certain influence to the dynamics of honking, have the problem of accuracy aspect.Another is to control the loudspeaker volume according to the speed of a motor vehicle.The square wave frequency that produces with the speed of a motor vehicle under rated voltage is controlled the size of loudspeaker volume, and the loudspeaker volume is divided into three grades of controls, i.e. low regime level; The middling speed district level and the level of running at high speed.The effect that this method plays under the relatively big situation of vehicle starting, idling and low speed and ambient noise is very little, also have to be exactly in the low speed of a motor vehicle and external environmental sounds hour can produce noise pollution, and at a high speed and ambient noise also can produce sizable noise pollution when very little.
Summary of the invention
At defective or deficiency that above-mentioned prior art exists, the purpose of this utility model is, a kind of car horn sound volume control device based on the AVR single-chip microcomputer is provided.This device can be according to the automatic size of Control of Automobile loudspeaker volume of the size of external environmental sounds, thereby alleviates serious day by day automobile noise pollution problem.
In order to realize above-mentioned task, the utility model adopts following technical scheme to be achieved:
A kind of car horn sound volume control device based on the AVR single-chip microcomputer, it is characterized in that, this device comprises sound collection unit, sound processing unit, volume control unit and car horn, wherein, sound collection unit, sound processing unit, volume control unit is connected successively, and volume control unit is connected with car horn.
Other characteristics of the present utility model are:
Described sound collection unit adopts a pick-up.This pick-up can be real-time the collection external environment in acoustic information and the acoustic information that collects sent into the A/D modular converter of sound processing unit with the form of analog voltage signal, carry out analog/digital conversion.
Described pick-up is to be the LY-901 pick-up of core with NE5532.It designs by AA class A amplifier A principle, thus eliminated pick-up because and line length between the load of back level, distributed capacitance size on the line, former thereby influence that the pickup quality is caused such as load input impedance.
Described pick-up is fixed on the direction of advance that the side that has microphone in the front portion of car roof and the pick-up faces automobile.
Described sound processing unit adopts single-chip microcomputer, the external environmental sounds information that the reception sound collection unit that it can be real-time is sent, and these information are handled fast and accurately, the volume control signal after volume control unit output is handled then.
Described single-chip microcomputer is the AVR single chip computer AT MEGA16 that Atmel company produces, and it comprises the 8-bit microprocessor of high-performance, low-power consumption, advanced risc architecture, erasable 10,000 times of the EEPROM of 512 bytes, four-way PWM, 8 tunnel 10 ADC.
Described volume control unit adopts the volume control integrated circuit.It can be real-time the volume control signal that transmitted of reception sound processing unit, regulate the volume of loudspeaker pronunciation then automatically according to the size of external environment volume.
Described volume control integrated circuit is the volume control integrated circuit M62429 that MIT produces.Its volume adjustable range is 0～83dB, and control precision is per step 1dB.
The external environmental sounds information that the utility model is gathered according to sound collection unit judges that automobile is to be on the noisy street, quiet suburb still quiet night, thereby the Control of Automobile loudspeaker send height, in or low intensive loudspeaker volume.It is simple to have circuit, response fast, precise control, characteristics such as with low cost.
In addition, the utility model is controlled the car horn volume and is had the following advantages:
(1) reduces noise pollution, realize hommization.The effect that speed tracking motor loudspeaker volume controller is played when the low speed external sound is big is very little, and in high speed of a motor vehicle external sound hour can produce big noise pollution.And use the utility model can change the size of loudspeaker output volume with the variation of automobile external environmental sounds of living in, thereby has reduced the unnecessary noise pollution.
(2) realize intelligent control.Traditional car horn volume controls according to the dynamics that the driver pushes horn button with the feel controller, and the utility model can have been realized intelligent control according to the size of the automatic Control of Automobile loudspeaker of the variation of external environmental sounds volume.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is a sound collection unit scheme of installation of the present utility model.
Fig. 3 is voice signal translation circuit theory diagrams of the present utility model.
Fig. 4 is the pin elementary diagram of sound processing unit of the present utility model.
Fig. 5 is the circuit theory diagrams of volume control unit of the present utility model.
Fig. 6 is an overall connection diagram of the present utility model.
The utility model is described in further detail below in conjunction with accompanying drawing.
Embodiment
With reference to Fig. 1, a kind of car horn sound volume control device of the present utility model based on the AVR single-chip microcomputer, comprise sound collection unit, sound processing unit, volume control unit and car horn, wherein, sound collection unit, sound processing unit, volume control unit are connected successively, and volume control unit is connected with car horn.Its basic principle is the external environmental sounds information of coming real-time processing sound collection unit to be gathered by the AVR single-chip microcomputer, volume control signal after will handling then sends volume control unit to, and last volume control unit is controlled the size of loudspeaker volume according to volume control signal.Thereby reach automobile is regulated loudspeaker pronunciation volume automatically according to the volume of external environment purpose.
Sound collection unit sends the acoustic information that collects to sound processing unit after amplifying calculation process.Sound processing unit sends volume control signal to volume control unit after acoustic information is carried out calculation process; Last volume control unit is controlled the size of the pronunciation volume of car horn according to volume control signal.
With reference to Fig. 2, sound collection unit of the present utility model is a pick-up, and the model of pick-up is the LY-901 pick-up, and microphone and two-way operational amplifier are contained in its inside.Label 1 among the figure is the shell of LY-901 pick-up; Label 2 is the microphone of pick-up inside, its can be in vehicle traveling process the acoustic information of real-time collection external environment; Label 3 is the two-way operational amplifier NE5532 of pick-up inside, and it can amplify the acoustic information that microphone collected.The LY-901 pick-up is fixed on the direction of advance that the side that microphone is arranged in the front portion of car roof and the pick-up faces automobile.Because pick-up is towards identical with the direction of advance of automobile, so it can gather the acoustic information of external environment quickly and accurately, and to these acoustic informations through after amplifying shapings, send to sound processing unit with the form of analog voltage signal.
With reference to Fig. 3, the microphone signal output port is by linking to each other with AD C0 mouth in the A/D module of single-chip microcomputer behind the 0.1uf electric capacity, and while 0.1uf electric capacity links to each other with ground with the 5V power supply respectively after by two 10K resistance.Because the analog voltage signal of pick-up output is the sine wave with positive and negative variation, and the A/D mouth of single-chip microcomputer can't be discerned the analog voltage signal of negative value when carrying out the A/D conversion, therefore the analog voltage signal of negative value can be converted to the digital voltage signal of 0V.Voice signal translation circuit can be the sine wave of the analog voltage signal of pick-up output translation 2.5V up, thereby make into the analog voltage signal value of the A/D mouth of single-chip microcomputer all be on the occasion of, the analog voltage signal of the A/D mouth by single-chip microcomputer can convert 0～255 digital signal value to after the A/D conversion.
With reference to Fig. 4, No. 10 pins of single-chip microcomputer are connected with the 5V positive source, No. 31 pin is connected with the 5V power cathode, the ADC0 pin is connected with the audio signal output terminal mouth of pick-up, the PB1 pin is connected with the CLOCK pin of volume control integrated circuit M62429, and the PB2 pin is connected with the DATA pin of volume control integrated circuit M62429.After pick-up passed through voice signal translation circuit with the acoustic information that collects, the ADC0 mouth of sending into single-chip microcomputer in the mode of analog voltage signal carried out the A/D conversion.After the A/D conversion, analog voltage signal converts digital voltage signal to.To doing difference between crest value in N the cycle of digital voltage signal and the trough value, obtain N peak-to-peak value Δ V then
N, that is: V
Crest (N)-V
Trough (N)=Δ V
N
Then, according to Principle of Statistics, to Δ V
NThe frequency distribution that occurs is analyzed, and that value of taking out existing frequency maximum at last is as final Δ V value.The simulative serial port I of the Δ V value that single-chip microcomputer will finally obtain by forming by PB1 and two ports of PB2
2The agreement of C sends to volume control unit.
With reference to Fig. 5, No. 1 pin VIN1 of volume control integrated circuit M62429 links to each other by the capacitor C 1 sound horn control line back and in the automobile of 10uf/16V; No. 2 pin VOUT1 link to each other with the signal input part of loudspeaker by after the capacitor C 2 of 10uf/16V; No. 3 pin GND is connected with the negative pole of 5V power supply; No. 4 pin DATA is connected with the PB2 mouth of single-chip microcomputer; No. 5 pin CLOCK is connected with the PB1 mouth of single-chip microcomputer; No. 6 pin VCC is connected with the positive pole of 5V power supply.In the automobile signal of control sound horn from after the Input input through No. 1 pin of capacitor C 1 coupling back to M62429, then the volume control signal that sends from single-chip microcomputer of M62429 basis with the signal of No. 1 pin according to I
2The C agreement zooms in or out the back in proportion from No. 2 pin output, through being input to car horn after capacitor C 2 couplings its sounding is controlled again.
With reference to Fig. 6, the LY-901 pick-up is after the sound in the environment carries out real-time collection and amplifies calculation process to external world in vehicle traveling process, by voice signal translation circuit will have the analog voltage signal sine wave of positive and negative variation to be transformed into all to be on the occasion of sine wave, and the ADC0 mouth that the analog signal after will changing is sent into the ATMEGA16 single-chip microcomputer carries out the A/D conversion, analog signal conversion is become digital signal, single-chip microcomputer obtains N peak-to-peak value Δ V to doing difference between crest value in N the cycle of the digital signal that converts to and the trough value then
N, that value of taking out existing frequency maximum is as final Δ V value.The simulative serial port I of the Δ V value that single-chip microcomputer will finally obtain by forming by PB1 and two ports of PB2
2The agreement of C sends to M62429.At last, the final Δ V that M62429 sends according to single-chip microcomputer, after the volume of the sounding control line of car horn input zoomed in or out according to ratio, again by car horn output, thereby the pronunciation volume that has reached car horn changed along with the variation of the power of external environmental sounds.
Claims (7)
1. car horn sound volume control device based on the AVR single-chip microcomputer, it is characterized in that, this device comprises sound collection unit, sound processing unit, volume control unit and car horn, wherein, sound collection unit, sound processing unit, volume control unit are connected successively, and volume control unit and car horn join.
2. the car horn sound volume control device based on the AVR single-chip microcomputer as claimed in claim 1 is characterized in that, described sound collection unit is a pick-up.
3. the car horn sound volume control device based on the AVR single-chip microcomputer as claimed in claim 2 is characterized in that the model of described pick-up is the LY-901 pick-up, and microphone and two-way operational amplifier are contained in its inside.
4. the car horn sound volume control device based on the AVR single-chip microcomputer as claimed in claim 1 is characterized in that described sound processing unit is a single-chip microcomputer, wherein contains the A/D modular converter.
5. the car horn sound volume control device based on the AVR single-chip microcomputer as claimed in claim 1 is characterized in that described volume control unit is the volume control integrated circuit.
6. the car horn sound volume control device based on the AVR single-chip microcomputer as claimed in claim 5 is characterized in that the model of described volume control integrated circuit is M62429, and its volume adjustable range is 0～83dB, and control precision is per step 1dB.
7. as claim 2 or 3 described car horn sound volume control devices, it is characterized in that described pick-up is fixed on the direction of advance that the side that has microphone in the front portion of car roof and the pick-up faces automobile based on the AVR single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920245737 CN201577184U (en) | 2009-12-11 | 2009-12-11 | Car horn volume control device based on AVR singlechip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920245737 CN201577184U (en) | 2009-12-11 | 2009-12-11 | Car horn volume control device based on AVR singlechip |
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| Publication Number | Publication Date |
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| CN201577184U true CN201577184U (en) | 2010-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920245737 Expired - Fee Related CN201577184U (en) | 2009-12-11 | 2009-12-11 | Car horn volume control device based on AVR singlechip |
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| CN (1) | CN201577184U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102358234A (en) * | 2011-09-14 | 2012-02-22 | 汉得利（常州）电子有限公司 | Back-up buzzer capable of adjusting white noise |
| CN103873984A (en) * | 2012-12-13 | 2014-06-18 | 鸿富锦精密工业(武汉)有限公司 | System and method for automatically regulating output volume of electronic device |
| CN106028218A (en) * | 2016-06-29 | 2016-10-12 | 浙江正泰汽车科技有限公司 | Electronic speaker with controllable volume |
| CN106162440A (en) * | 2016-07-22 | 2016-11-23 | 武汉理工大学 | Intelligent horn controller |
-
2009
- 2009-12-11 CN CN 200920245737 patent/CN201577184U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102358234A (en) * | 2011-09-14 | 2012-02-22 | 汉得利（常州）电子有限公司 | Back-up buzzer capable of adjusting white noise |
| CN103873984A (en) * | 2012-12-13 | 2014-06-18 | 鸿富锦精密工业(武汉)有限公司 | System and method for automatically regulating output volume of electronic device |
| CN106028218A (en) * | 2016-06-29 | 2016-10-12 | 浙江正泰汽车科技有限公司 | Electronic speaker with controllable volume |
| CN106028218B (en) * | 2016-06-29 | 2021-06-15 | 浙江正泰汽车科技有限公司 | Electronic loudspeaker with controllable sound intensity |
| CN106162440A (en) * | 2016-07-22 | 2016-11-23 | 武汉理工大学 | Intelligent horn controller |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100908 Termination date: 20101211 |