CN102262876B - System and method for automatically adjusting sound volume of car horn - Google Patents
System and method for automatically adjusting sound volume of car horn Download PDFInfo
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Abstract
The invention relates to a system and method for automatically adjusting sound volume of a car horn, capable of actively and automatically adjusting horning sound volume according to different environments. By the adoption of the system and method, the problem that an automatic sound volume adjustment device adjusts sound volume unscientifically in the prior art can be solved. According to the key points of the technical scheme of the invention, the system for automatically adjusting sound volume of a car horn comprises a horning button, a car horn and an audio power amplifier, wherein the car horn is electrically connected with the audio power amplifier; the system for automatically adjusting sound volume of a car horn also comprises a control chip and a plurality of environment sensors, wherein the environment sensors are connected with the control chip electrically through an analog-to-digital converter, the output port of the control chip is connected with the signal input end of the audio power amplifier electrically through the analog-to-digital converter, and the horning button is connected with the control chip electrically. The system and method can be used for actively and automatically adjusting horning sound volume according to different environments and realizing sound volume linear adjustment during the process of continues horning.
Description
Technical field
The present invention relates to a kind of car horn, particularly a kind ofly can be initiatively automatically regulate sound volume of automobile horn varitrol and the method thereof of volume of warning of blowing a whistle according to varying environment.
Background technology
As everyone knows, traffic hazard is the grave danger to the people life property safety, in good time blowing a whistle warned and can greatly be reduced the probability that traffic hazard occurs in driving procedure, but because in present horn system, the volume of loudspeaker all is the same, and the weather of heavy rain or typhoon rain is inevitably, and at this time the acoustic propagation of warning of loudspeaker can be subject to certain obstruction, relatively fine and explain in words broadcast just not too clear, the impact effect of warning greatly; Simultaneously in case enter noisy environment, blowing a whistle the alarming effect of warning also can be relatively relatively poor, even and horn volume is constant also causes the driver repeatedly to repeat to blow a whistle to warn, in case surrounding environment is comparatively noisy, so to other people, it is still limited that the alarming effect of car promotes effect, finally cause at inclement weathers such as sleet, noisy highway section produces traffic hazard easily, same, if at night, comparatively in the spacious situation, the scope of the transmission sound of warning is just wider, the distance of transmission is also far away, and lower volume can satisfy user's demand, and the constant loudspeaker of volume still can send the comparatively loud sound of blowing a whistle, this moment, the loud sharp-pointed acoustic capacitance of blowing a whistle easily affected people's at night rest, caused unnecessary noise pollution.
Chinese patent notification number CN 101452697A, June 10 2009 day for announcing, a kind of eco-friendly car loudspeaker according to the environmental noise automatic regulating volume are disclosed, comprise two loudspeaker that watt level is different, and control device, control device is by microphone, amplifier, voltage comparator, output stage forms, microphone is located at the appearance of automobile bodies, in order to gather environmental noise and to be connected with the input end of amplifier, the output terminal of amplifier is connected with the comparison input end of voltage comparator, relay is connected to as output stage on the output terminal of voltage comparator, and it is often opened and normally closed contact often opening and be connected output terminal and be connected respectively with two loudspeaker as control device.Although this technical scheme can automatically adjust according to the volume of surrounding enviroment noise to loudspeaker, but the adjusting of this technical scheme ratio is science not, very not high at the rainy day ambient noise, but larger obstruct is arranged but on transmission sound, so, the method of setting horn volume by this technical scheme employing ambient noise size is also improper, another situation is to be in the late into the night, at this moment, the road surface is comparatively spacious, transmission sound intercepts less, and the too high sound of warning can make other people feel too ear-piercing, produces easily noise pollution; And when regulating volume, only taked two level of sound volume, sound variation is too lofty, makes easily the people produce discomfort.
Summary of the invention
The object of the invention is to solve above-mentioned prior art apparatus for automatically regulating sound volume and regulate the not too lofty problem of science, sound variation of volume, provide a kind of and can be have initiatively automatically regulated volume, continuous the blow a whistle sound volume of automobile horn varitrol of volume linear regulation when warning of warning of blowing a whistle according to varying environment.
The technical solution adopted for the present invention to solve the technical problems is: a kind of sound volume of automobile horn varitrol, comprise the button of blowing a whistle, car horn and audio-frequency power amplifier, car horn is electrically connected with audio-frequency power amplifier, described sound volume of automobile horn varitrol also includes control chip and several environment inductors, described environment inductor is electrically connected with described control chip by analog to digital converter, described control chip delivery outlet is electrically connected with the signal input part of described audio-frequency power amplifier by behind the digital to analog converter, and the described button of blowing a whistle is electrically connected with described control chip.Environment by environment inductor induction periphery is set like this, environment inductor carries out analog to digital conversion with analog signal transmission to the analog to digital converter of collecting, the digital data transmission that conversion is good is to control chip, control chip is collected various environmental datas, each data are weighted are exported by the control chip delivery outlet after calculating suitable volume value, suitable volume value exports audio-frequency power amplifier to through after the digital-to-analog conversion, and audio-frequency power amplifier drives car horn.
As preferably, described environment inductor includes several optical inductors, rainfall inductor, sound inductor, and described optical inductor, sound inductor, rainfall inductor all are electrically connected with described control chip by analog to digital converter.Convert illuminance to digital signal by optical inductor, in order to judge current whether night, volume value is turned down output by a relatively large margin if then will suit night, and volume value is heightened output greatly if then will suit daytime; The rainfall inductor receives rainfall information, and in order to judge at that time weather, volume value is heightened output greatly if large sleet sky then will suit, and then takes the circumstances into consideration slightly to improve suitable volume value output when rainfall is little, if rain then suitable volume value is not adjusted; Sound inductor induction ambient noise decibel value, the volume value that will suit if surrounding environment is noisy is heightened output greatly, if surrounding environment is comparatively quiet, the volume value that then will suit is turned down output greatly; The button of blowing a whistle arranges like this and can guarantee the only suitable volume value energy of output when blowing a whistle, and does not export suitable volume value when not blowing a whistle.
As preferably, described control chip output signal feeds back to described control chip input end.Arrange like this, the suitable volume value of control chip output feeds back to the control chip input end, control chip will be exported suitable volume value driving when calculating the surrounding enviroment noise figure horn volume deducts, can draw more accurate actual surrounding enviroment noise figure, rather than the peripheral environment volume value of the cumulative sound volume of automobile horn of process.
As preferably, described sound volume of automobile horn varitrol also includes key circuit, and described key circuit is electrically connected with the input end of described control chip.The setting of key circuit, the user can input data to control chip by key circuit, carries out man-machine interaction.
As preferably, described sound volume of automobile horn varitrol also includes clock chip, and described clock chip is electrically connected with described control chip.The arranging of clock chip reduced control chip by programming finish regularly, the difficulty of tally function, reduced the calculated amount of internal processes, improved the travelling speed of native system, make things convenient for control chip to call.
The method that a kind of sound volume of automobile horn is regulated automatically, the method may further comprise the steps:
Step 1: utilize one or more inductor induction ambient data, then ambient data is transferred to control chip;
Step 2: calculate suitable volume value according to ambient data by control chip;
Step 3: the suitable volume value of control chip output is to audio-frequency power amplifier, and power amplifier output power drives the car horn sound volume of automobile horn that automatically adjusts of blowing a whistle.Obtain ambient data by inductor, control chip can be according to ambient data, daytime whether for example, night whether, whether noisy on every side, weather condition how, whether the heavy rain strong wind weather is arranged, this moment, control chip can convert by the corresponding different proportion of corresponding above data, by converting, finally obtain suitable volume value, suitable volume value is linear corresponding with the enlargement factor of audio-frequency power amplifier, the maximum amplification of the corresponding audio-frequency power amplifier of maximum suitable volume value wherein, the minimum enlargement factor of the corresponding audio-frequency power amplifier of minimum suitable volume value.
As preferred version, described suitable volume value is formed by default volume value and the addition of environmental change influence value, described default volume value is set by user's input control chip, described environmental change influence value is calculated according to ambient data by control chip, described environmental change influence value is by the environmental change influence value that affected by the illuminance situation, be subjected to the environmental change influence value that weather condition affects and drawn by the environmental change influence value addition of surrounding enviroment noise effect, wherein, be subjected to the environmental change influence value that weather condition affects and be subjected to the environmental change influence value of surrounding enviroment noise effect all less than the environmental change influence value that affected by the illuminance situation.The default volume value is set determines the roughly volume range of suitable volume value, set according to user's demands of individuals; The environmental change influence value can calculate according to ambient data, the environmental change influence value reacts at that time external environment condition like this, change by the suitable volume value of the variation of environmental change influence value thereupon, car horn is blown a whistle and can more be met the requirement of prevailing circumstances, be subjected to the environmental change influence value that weather condition affects and be subjected to the environmental change influence value of surrounding enviroment noise effect all less than the environmental change influence value that affected by the illuminance situation, arrange like this, guaranteed at night, sound volume of automobile horn can significantly reduce, even be in inclement weather and be noisy environment, its sound of blowing a whistle can be excessively not loud yet, can not violate local law and the peripheral resident of impact.
As preferred version, described control chip is set with overflow value, the every output of described control chip once behind the suitable volume value described suitable volume value gradually ring the addition value and replace original suitable volume value output on cumulative again, until described suitable volume value is more than or equal to described overflow value.In reality is driven, the other side that warns if there is blowing a whistle does not at the beginning have the words of reaction, if car horn can increase volume gradually, then have preferably alarming effect, by arrange the every output of control chip once behind the suitable volume value described suitable volume value gradually ring the addition value and replace original suitable volume value output on cumulative again, like this through repeatedly blowing a whistle, gradually ring the gradually extremely suitable volume value of linear superposition of addition value, so suitable volume value increases output gradually, the caution volume progressively improves, and can improve the effect of caution; Overflow value can be according to the regulation setting of demands of individuals and laws and regulations, the setting of overflow value has guaranteed that suitable volume value can be not excessive like this, it is lower for example to set overflow value at night, blow a whistle even so repeatedly repeat, the caution volume progressively improves, and the blow a whistle too high violation local law of volume or cause the situation of other people discomfort of loudspeaker also can not occur.
As preferred version, when described suitable volume value greater than described default volume value and described environmental change influence value sum and in the several seconds during the suitable volume value of output, suitable volume value deducts one again and gradually rings the addition value and replace original suitable volume value, until described suitable volume value is less than or equal to described default volume value and described environmental change influence value sum.Arrange like this, after blowing a whistle continuously, suitable volume value reaches a higher volume, do not blow a whistle if after this do not continue, so suitable volume value progressively linearity weakens, equal described default volume value and described environmental change influence value sum until suitable volume value is less than again, guaranteed to blow a whistle after the long period of being separated by, the loudspeaker caution sound can meet on-the-spot environment rather than a loud especially loudspeaker caution sound occur.
As preferred version, described gradually loud addition value, overflow value are calculated according to ambient data by control chip, gradually ring addition value and degenerative suitable volume value corresponding relation in direct ratio, calculated according to ambient data by control chip, the twice that overflow value equals the default volume value adds four times of environmental change influence value, or wherein saidly gradually ring the addition value, overflow value is set by user's input control chip.Gradually ring the addition value, overflow value is calculated according to ambient data by control chip, the amplitude that volume is gradually rung also is complementary with surrounding environment, when peripheral weather is better, it is less and ascensional range is also less gradually to ring the initial value of addition value, suitable volume value can progressively slowly increase, the former sound that particularly repeat to blow a whistle increase the volume of blowing a whistle hardly, the degree that ambient noise is polluted is less, and in the comparatively abominable situation of peripheral weather, it is large and ascensional range is also larger gradually to ring the initial value of addition value, suitable volume value can increase sharply, and very fast reaches a suitable volume value that rings, and can play better warning function.
The invention has the beneficial effects as follows: the present invention can initiatively regulate the volume of warning of blowing a whistle according to varying environment automatically, and when blowing a whistle, can progressively regulate volume value according to surrounding enviroment, and the user can manually arrange the volume of warning of blowing a whistle, and meets different clients' demands of individuals.
Description of drawings
Fig. 1 is a kind of circuit block diagram of the present invention;
Fig. 2 is main program flow chart of the present invention;
Fig. 3 is interrupt routine process flow diagram of the present invention.
Among the figure: 1, control chip, 2, the sound inductor, 3, optical inductor, 4, rainfall inductor, 5, key circuit, 6, clock chip, 7, audio-frequency power amplifier, 8, car horn, 9, external memory storage, 10, display circuit, 11, display driver chip, 21, analog to digital converter one, 31, analog to digital converter two, 41, analog to digital converter three, 71, digital to analog converter, 91, stabilized voltage supply and watchdog circuit, 92, crystal oscillating circuit.
Embodiment
Below by specific embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment:
A kind of sound volume of automobile horn varitrol (with reference to accompanying drawing 1), present embodiment is powered by vehicle power, the present invention includes control chip 1, control chip 1 delivery outlet passes through to be electrically connected with the signal input part of described audio-frequency power amplifier 7 behind the digital to analog converter 71, the output terminal of audio-frequency power amplifier 7 drives car horn 8, wherein control chip 1 adopts is AT89C51 in 51 series monolithics, the standard I-O interface of control chip 1 is electrically connected with the signal input part of digital to analog converter 71, the output terminal of audio-frequency power amplifier 7 drives car horn 8, here digital to analog converter 71 can adopt TLC5617, the DIN mouth of TLC5617 and the serial ports of 51 series monolithics carry out communication, the OUTA mouth of TLC5617 and OUTB mouth output aanalogvoltage, what the audio-frequency power amplifier 7 here adopted is bipolar soft-switching PWM power amplifier, the input end of bipolar soft-switching PWM power amplifier is connected with the OUTB mouth with the OUTA mouth of TLC5617, waveform according to OUTA mouth and the output of OUTB mouth, bipolar soft-switching PWM power amplifier is adjusted dutycycle, and the suitable voltage of output drives car horn 8; The present invention also comprises inductor 2, optical inductor 3, rainfall inductor 4, sound inductor 2 gathers the decibels of peripheral sound, the output analog quantity, by analog to digital converter 1, change this analog quantity into digital quantity and transfer to control chip 1, optical inductor 3 gathers the peripheral illumination number of degrees, the output analog quantity, by analog to digital converter 2 31, change this analog quantity into digital quantity and transfer to control chip 1, rainfall inductor 4 induction rainfall size information, the output analog quantity, by analog to digital converter 3 41, change this analog quantity into digital quantity and transfer to control chip 1, sound inductor 2 can adopt electret capacitor microphone here, the output terminal of electret capacitor microphone is connected with filter amplification circuit, and it is the analog to digital converter of single-chip microcomputer Standard bus interface that analog to digital converter 1 can adopt the sequential interface, here can adopt ADC0801, the analog quantity voltage input both positive and negative polarity of ADC0801 is electrically connected with the output terminal of filter amplification circuit respectively; Optical inductor 3 can adopt GZD system illuminance transmitter, because GZD system illuminance transmitter output voltage is 0 to 5 volt of voltage of three-wire system, so analog to digital converter 2 31 can adopt ADC0801 directly to be connected with GZD system illuminance transmitter; Here rainfall inductor 4 adopts the rainfall inductor of the wiper that carries on the automobile, light emitting diode by the two ends, the left and right sides of the windshield that is located at respectively pilothouse, reception diode, condenser lens, leaded light prism and leaded light bonding agent form, emitting diode sends infrared ray through condenser lens, the leaded light prism, after leaded light bonding agent and the windshield, can be at the other end through the leaded light bonding agent, the leaded light prism, condenser lens is to reception diode, when windscreen surface is dry, windshield can total reflection pass to reception diode, when on the windshield raindrop being arranged, raindrop meeting refraction loss part infrared ray, so can calculate the size of rainfall according to the power that receives signal according to reception diode, this moment, analog to digital converter 3 41 was provided by the inductor of the wiper that carries on the car; The input port of control chip 1 is electrically connected with clock chip 6, clock chip 6 clock signals, having reduced control chip 1 finishes regularly by programming, the difficulty of tally function, reduced the calculated amount of internal processes, improved the travelling speed of native system, make things convenient for control chip 1 to call, the input port of control chip 1 also is electrically connected with a vehicle whistle button and key circuit 5, the button that key circuit 5 is inputted for the client, control chip 1 is also expanded and is electrically connected with stabilized voltage supply and watchdog circuit 91 and crystal oscillating circuit 92, part as man-machine interaction, the output port of control chip 1 is connected with the input end of display driver chip 11, and the output terminal of display driver circuit 11 is electrically connected with display circuit 10, here, key circuit 5 adopts the matrix form button, that external memory storage 9 here adopts is the EEPROM with data storage function, can select AT24C64, adopts EEPROM can guarantee the possibility of repetitive read-write, also avoided the people arbitrarily to change data, the loss that causes; That clock chip 6 is here used is the integrated circuit of clock SD2001 that adopts the serial bus interface classmate, and the serial of the output interface of SD2001 and 51 series monolithics links and connects; Stabilized voltage supply and watchdog circuit 91 are as the necessary peripheral assembly of 51 series monolithics, that adopt here is MAX708, MAX708 has stabilized voltage supply and two kinds of circuit of watchdog circuit concurrently, saved the connection difficulty of peripheral assembly, display circuit 10 is made of two seven segment digital tubes, display driver circuit 11 by 74HC571 as latch, it and two Sheffer stroke gate 74HC00 are used for the demonstration data of each charactron of depositing jointly, in order to keep the brightness of each charactron, the present invention adopts control chip 1 to drive the method for display circuit 10 by ULN203.
A kind of sound volume of automobile horn Automatic adjustment method is (with reference to accompanying drawing 2, accompanying drawing 3), when vehicle launch, vehicle power work, this moment, the sound volume of automobile horn varitrol powered on, the sound volume of automobile horn varitrol enters the first step, initialization: control chip 1, analog to digital converter 1, analog to digital converter 2 31, analog to digital converter 3 41, digital to analog converter 71, the various chips such as clock chip 6, assembly all powers on and enters initial phase, control chip 1, external memory storage 9, clock chip 6 reads initial value, sound inductor 2, optical inductor 3, rainfall inductor 5 is started working.
After the initialization of sound volume of automobile horn varitrol, the sound volume of automobile horn varitrol enters second step: judge whether to enter auto-set mode, at this moment, the display circuit flicker, the key scan program start of control chip, this moment, the client can select whether to enter auto-set mode by own demand, the client did not carry out any operation in ten seconds, control chip namely reads default volume value input default volume value automatically, the sound volume of automobile horn varitrol namely enters auto-set mode, if, the client is ready to want oneself to set, at this moment, the client can be by key-press input default volume value, display circuit shows the default volume value of client's input, namely determined the acquiescence dutycycle of bipolar soft-switching PWM power amplifier, after the default volume value reads and finishes, the client can input as one sees fit and gradually ring addition value and overflow value, overflow value is the maximum adjustable dutycycle of bipolar soft-switching PWM power amplifier, owing to consider the possibility of overflowing, so the maximum adjustable dutycycle of this bipolar soft-switching PWM power amplifier is less than the maximum duty cycle of bipolar soft-switching PWM power amplifier, if like this input, then sound volume of automobile horn is controlled by the client fully, gradually do not ring addition value and overflow value if the client does not input, then gradually ring addition value and overflow value and calculated according to external environment condition by control chip.
After the sound volume of automobile horn varitrol is selected whether to enter auto-set mode and is finished, as selecting to enter auto-set mode, then system entered for the 3rd step, obtain ambient data, at this moment, various inductors, comprise the optical inductor that is located at the roof front end, sound inductor and rainfall inductor, optical inductor, sound inductor and rainfall inductor transfer to control chip by analog to digital converter respectively after collecting ambient data, control chip reads ambient data, calculate the overflow value of this moment, gradually ring the addition value, environmental change influence value and suitable volume value, the suitable volume value of this moment equals default volume value and environmental change influence value sum, and environmental change influence value initial value is 0, the default volume value is read in when the initialization by control chip; Control chip determines whether daytime by the illuminance data, if the words on daytime, then the environmental change influence value adds 25% of default volume value, namely if the words on daytime, the dutycycle of bipolar soft-switching PWM power amplifier increases 25% of acquiescence dutyfactor value again on the basis of acquiescence dutycycle, if the words at night, then the environmental change influence value adds default volume value-25%, namely if the words at night, the dutycycle of bipolar soft-switching PWM power amplifier is born on the basis of acquiescence dutycycle again increases 25% of acquiescence dutyfactor value, the environmental change influence value that affected by the illuminance situation is big or small according to illuminance, is accounted for-25% to 25% linear change of volume value by acquiescence; Weather condition around control chip is judged by the rainfall value, if rainstorm weather then the environmental change influence value add 15% of default volume value, namely if the words in rainstorm weather sky, the dutycycle of bipolar soft-switching PWM power amplifier on the basis of acquiescence dutycycle, increase again the acquiescence dutyfactor value 15% if sunny weather then the environmental change influence value add-15% of default volume value, namely if the words of sunny weather, the dutycycle of bipolar soft-switching PWM power amplifier is negative 15% of the acquiescence dutyfactor value that increases on the basis of acquiescence dutycycle, the environmental change influence value that affected by weather condition is big or small according to rainfall, by-15% to 15% linear change of default volume value; Control chip calculates the size of ambient noise again in conjunction with ambient noise decibel value and degenerative suitable volume value, if periphery is comparatively noisy, then the environmental change influence value adds 10% of default volume value, if namely periphery is comparatively noisy, the dutycycle of bipolar soft-switching PWM power amplifier increases 10% of acquiescence dutyfactor value again on the basis of acquiescence dutycycle, if periphery is comparatively quiet, then the environmental change influence value adds default volume value-10%, if namely periphery is comparatively quietly talked about, the dutycycle of bipolar soft-switching PWM power amplifier is born on the basis of acquiescence dutycycle again increases 10% of acquiescence dutyfactor value, namely be subjected to the environmental change influence value of surrounding enviroment noise effect according to the noise size, by-15% to 15% linear change of default volume value; To sum up data finally can draw the environmental change influence value.Gradually ring addition value and degenerative suitable volume value corresponding relation in direct ratio, calculated according to ambient data by control chip, the twice that overflow value equals the default volume value adds four times of environmental change influence value.
The client is after manually input is finished or control chip has calculated overflow value by the ambient data of obtaining, gradually ring the addition value, behind environmental change influence value and the suitable volume value, the sound volume of automobile horn varitrol entered for the 4th step, wait for and interrupting, the client is without blowing a whistle in 300 seconds, then program jumps to the first step and re-starts circulation, if, the client presses the button of blowing a whistle in 300 seconds, so, the sound volume of automobile horn varitrol enters interrupt routine, at this moment, to suit volume value output of control chip, the suitable volume value of this moment equals default volume value and environmental change influence value sum, audio-frequency power amplifier is that bipolar soft-switching PWM power amplifier is adjusted dutycycle according to suitable volume value, the driving car horn is blown a whistle and is warned, at this moment, suitable volume value negative feedback is to control chip, control chip calculates new gradually loud addition value, if the client need to continue to blow a whistle, then will gradually ring addition value and suitable volume value addition, if this numerical value is not more than overflow value, then this numerical value is exported as suitable volume value, if this numerical value is greater than overflow value, then overflow value is exported as suitable volume value, after finishing, output reenters the judgement of whether blowing a whistle, circulate, if, the client is without the action of blowing a whistle in lasting 30 seconds, control chip is judged suitable volume value so, whether less than default volume value and environmental change influence value sum, if suitable volume value is less than default volume value and environmental change influence value sum, then with default volume value and environmental change influence value sum as suitable volume value, if suitable volume value is greater than default volume value and environmental change influence value sum, the volume value that then will suit deducts gradually and to ring the addition value as suitable volume value, and then in 120 seconds, wait for and whether blowing a whistle, if blow a whistle, volume value output then will suit, returning to the judgement of whether blowing a whistle circulates, if client's action of not blowing a whistle in 120 seconds, program interrupt is returned so, and control chip returns the circulation that second step re-starts master routine.
Above-described embodiment is a kind of better scheme of the present invention, is not that the present invention is done any pro forma restriction, also has other variant and remodeling under the prerequisite that does not exceed the technical scheme that claim puts down in writing.
Claims (8)
1.
A kind of sound volume of automobile horn varitrol, comprise the button of blowing a whistle, car horn and audio-frequency power amplifier, car horn is electrically connected with audio-frequency power amplifier, described sound volume of automobile horn varitrol also includes control chip and several environment inductors, described environment inductor is electrically connected with described control chip by analog to digital converter, described control chip delivery outlet is electrically connected with the signal input part of described audio-frequency power amplifier by behind the digital to analog converter, the described button of blowing a whistle is electrically connected with described control chip, it is characterized in that: described environment inductor includes several optical inductors, the rainfall inductor, the sound inductor, described optical inductor, the sound inductor, the rainfall inductor all is electrically connected with described control chip by analog to digital converter.
2.
Sound volume of automobile horn varitrol according to claim 1 is characterized in that: described control chip output signal feeds back to described control chip input end.
3.
Sound volume of automobile horn varitrol according to claim 1 and 2 is characterized in that: described sound volume of automobile horn varitrol also includes key circuit, and described key circuit is electrically connected with the input end of described control chip.
4.
Sound volume of automobile horn varitrol according to claim 1 and 2 is characterized in that: described sound volume of automobile horn varitrol also includes clock chip, and described clock chip is electrically connected with described control chip.
5.
The method that a kind of sound volume of automobile horn is regulated automatically, the method may further comprise the steps:
Step 1: utilize one or more inductor induction ambient data, then ambient data is transferred to control chip;
Step 2: calculate suitable volume value according to ambient data by control chip;
Step 3: the suitable volume value of control chip output is to audio-frequency power amplifier, the audio-frequency power amplifier output power drives the car horn sound volume of automobile horn that automatically adjusts of blowing a whistle, it is characterized in that: wherein said suitable volume value is formed by default volume value and the addition of environmental change influence value, described default volume value is set by user's input control chip, described environmental change influence value is calculated according to ambient data by control chip, described environmental change influence value is by the environmental change influence value that affected by the illuminance situation, be subjected to the environmental change influence value that weather condition affects and drawn by the environmental change influence value addition of surrounding enviroment noise effect, wherein, be subjected to the environmental change influence value that weather condition affects and be subjected to the environmental change influence value of surrounding enviroment noise effect all less than the environmental change influence value that affected by the illuminance situation.
6.
The method that sound volume of automobile horn according to claim 5 is regulated automatically, wherein said control chip is set with overflow value, the every output of described control chip once behind the suitable volume value described suitable volume value gradually ring the addition value and replace original suitable volume value output on cumulative again, until described suitable volume value is more than or equal to described overflow value.
7.
The method that sound volume of automobile horn according to claim 5 is regulated automatically, when wherein said suitable volume value greater than described default volume value and described environmental change influence value sum and in the several seconds during the suitable volume value of output, suitable volume value deducts one again and gradually rings the addition value and replace original suitable volume value, until described suitable volume value is less than or equal to described default volume value and described environmental change influence value sum.
8.
The method that sound volume of automobile horn according to claim 6 is regulated automatically, wherein said gradually loud addition value, overflow value are calculated according to ambient data by control chip, gradually ring addition value and degenerative suitable volume value corresponding relation in direct ratio, calculated according to ambient data by control chip, the twice that overflow value equals the default volume value adds four times of environmental change influence value, or wherein saidly gradually ring the addition value, overflow value is set by user's input control chip.
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| CN 201110092184 CN102262876B (en) | 2011-04-13 | 2011-04-13 | System and method for automatically adjusting sound volume of car horn |
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| CN 201110092184 CN102262876B (en) | 2011-04-13 | 2011-04-13 | System and method for automatically adjusting sound volume of car horn |
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| CN102802101B (en) * | 2012-08-24 | 2015-03-04 | 上海交通大学 | Device for reducing noise pollution of automobile horn and application of device |
| 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 |
| JP6020415B2 (en) * | 2013-11-01 | 2016-11-02 | 株式会社デンソー | Vehicle horn control device, horn sound reduction control system |
| CN103568941B (en) * | 2013-11-19 | 2017-02-15 | 浙江吉利汽车研究院有限公司 | Automobile driving control device and automobile driving control method |
| CN107025745A (en) * | 2016-01-29 | 2017-08-08 | 苏州三星电子有限公司 | A kind of refrigerator and intelligent domestic system |
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| CN102262876A (en) | 2011-11-30 |
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