CN102262876A - 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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- CN102262876A CN102262876A CN2011100921845A CN201110092184A CN102262876A CN 102262876 A CN102262876 A CN 102262876A CN 2011100921845 A CN2011100921845 A CN 2011100921845A CN 201110092184 A CN201110092184 A CN 201110092184A CN 102262876 A CN102262876 A CN 102262876A
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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 regulate the car horn volume varitrol and the method thereof of volume of warning of blowing a whistle automatically 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 be reduced the probability that traffic hazard takes place greatly 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 subjected to certain obstruction, fine relatively and explain in words broadcast just not too clear, the influence effect of warning greatly; Simultaneously in case enter noisy environment, blowing a whistle the caution effect of warning also can be relatively poor relatively, even and the loudspeaker 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, the caution effect promoting effect of car is still limited, finally cause at inclement weathers such as sleet, noisy highway section is easy to generate traffic hazard, same, if at night, comparatively under the Kong Kuang 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 influenced 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 is formed, microphone is located at the appearance of automobile bodies, in order to gather environmental noise and to be connected with amplifier input terminal, the output terminal of amplifier is connected with the comparison input end of voltage comparator, relay is connected as output stage on the output terminal of voltage comparator, and it is often opened with normally closed contact and is connected respectively with two loudspeaker as often opening with normally closed output terminal of control device.Though 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 bigger obstruct is arranged but on transmission sound, so, the method of setting the loudspeaker 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, is easy to generate noise pollution; And when regulating volume, only taked two level of sound volume, sound variation is too lofty, makes the people produce discomfort easily.
Summary of the invention
The objective 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 regulated volume, the blow a whistle car horn volume varitrol of volume linear regulation when warning continuously of warning of blowing a whistle automatically according to varying environment.
The technical solution adopted for the present invention to solve the technical problems is: a kind of car horn volume 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 car horn volume varitrol also includes control chip and several environment induction devices, described environment induction device 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 induction device induction periphery is set like this, the environment induction device 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 export 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 induction device 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.Whether, in order to judge current be night, volume value is turned down output by a relatively large margin if then will suit night if converting illuminance to digital signal by optical inductor, volume value is heightened output greatly if then will suit daytime; The rainfall inductor receives rainfall information, and in order to judge weather at that time, volume value is heightened output greatly if big sleet sky then will suit, and then takes the circumstances into consideration to improve slightly 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 is provided with like this and can guarantees 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.Be provided with 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 loudspeaker volume deducts, can draw more accurate actual surrounding enviroment noise figure, rather than pass through the surrounding enviroment volume value of the car horn volume that adds up.
As preferably, described car horn volume 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 import data to control chip by key circuit, carries out man-machine interaction.
As preferably, described car horn volume varitrol also includes clock chip, and described clock chip is electrically connected with described control chip.Being provided with 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 self-regulating method of a kind of car horn volume, 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 car horn volume 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 wherein maximum suitable volume value, 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 imported control chip by the user and is set, 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 influenced by the illuminance situation, be subjected to the environmental change influence value that weather condition influences 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 influences and be subjected to the environmental change influence value of surrounding enviroment noise effect all less than the environmental change influence value that influenced 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 external environment condition at that time 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 influences and be subjected to the environmental change influence value of surrounding enviroment noise effect all less than the environmental change influence value that influenced by the illuminance situation, be provided with like this, guaranteed at night, the car horn volume can significantly reduce, even be in inclement weather and be noisy environment, its sound of blowing a whistle can be not loud excessively yet, can not violate local law and the peripheral resident of influence.
As preferred version, described control chip is set with overflow value, gradually ring the addition value on described suitable volume value adds up behind the once suitable volume value of the every output of described control chip again and replace original suitable volume value output, until described suitable volume value more than or equal to described overflow value.In reality is driven, the other side that warns if blow a whistle does not at the beginning have the words of reaction, if car horn can increase volume gradually, then have and warn effect preferably, described suitable volume value gradually rings the addition value and replaces original suitable volume value output on adding up again behind the once suitable volume value of the every output of control chip by being provided with, like this through repeatedly blowing a whistle, gradually loud addition value linearity gradually is added to suitable volume 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 smaller or equal to described default volume value and described environmental change influence value sum.Be provided with 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, again be less than until suitable volume value and equal described default volume value and described environmental change influence value sum, 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, calculate 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 imported control chip by the user and is set.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, less to the degree that ambient noise pollutes, and at peripheral weather comparatively under the condition of severe, it is big and ascensional range is also bigger gradually to ring the initial value of addition value, suitable volume value can increase sharply, and very fast reaches one than the suitable volume value that rings, and can play warning function better.
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 be provided with 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 a main program flow chart of the present invention;
Fig. 3 is an 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 in conjunction with the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment:
A kind of car horn volume 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 is electrically connected with the signal input part of described audio-frequency power amplifier 7 by digital to analog converter 71 backs, 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, the suitable driven car horn 8 of output; The present invention also comprises inductor 2, optical inductor 3, rainfall inductor 4, sound inductor 2 is gathered 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 is gathered 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 voltage of three-wire system, so analog to digital converter 2 31 can adopt that ADC0801 is direct 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 pilothouse respectively, reception diode, condenser lens, leaded light prism and leaded light bonding agent are formed, 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 of received 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 an automobile blow a whistle button and key circuit 5, key circuit 5 is imported the button of use 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 for use, 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 video 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 car horn volume automatic regulating method is (with reference to accompanying drawing 2, accompanying drawing 3), when vehicle launch, vehicle power work, this moment, car horn volume varitrol powered on, car horn volume 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, 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 car horn volume varitrol, car horn volume varitrol entered for 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 promptly reads default volume value input default volume value automatically, car horn volume varitrol promptly enters auto-set mode, if, the client is ready to want oneself to set, at this moment, the client can be by button input default volume value, display circuit shows the default volume value of client's input, promptly determined the acquiescence dutycycle of bipolar soft-switching PWM power amplifier, after the default volume value reads and finishes, the client can import 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 input like this, then the car horn volume is controlled by the client fully, gradually do not ring addition value and overflow value if the client does not import, then gradually ring addition value and overflow value and calculate according to external environment condition by control chip.
After car horn volume 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 judges whether to be daytime by the illuminance data, if the words on daytime, then the environmental change influence value adds 25% of default volume value, promptly 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%, promptly if the words at night, the dutycycle of bipolar soft-switching PWM power amplifier is negative again 25% of the acquiescence dutyfactor value that increases on the basis of acquiescence dutycycle, promptly be subjected to environmental change influence value that the illuminance situation influences according to the illuminance size, account 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, promptly 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, promptly 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, promptly be subjected to environmental change influence value that weather condition influences according to the rainfall size, 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 promptly 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 promptly periphery is comparatively quietly talked about, the dutycycle of bipolar soft-switching PWM power amplifier is negative again 10% of the acquiescence dutyfactor value that increases on the basis of acquiescence dutycycle, the environmental change influence value that promptly is subjected to the surrounding enviroment noise effect is 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, car horn volume varitrol entered for the 4th step, wait for and interrupting, the client does not have and blows a whistle in 300 seconds, then program jumps to the first step and circulates again, if, the client presses the button of blowing a whistle in 300 seconds, so, car horn volume 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, control chip is given in suitable volume value negative feedback, control chip calculates new gradually loud addition value, if the client need 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 does not have the action of blowing a whistle in 30 seconds continuing, 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, again returning 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 returned for second step and carries out the circulation of master routine again.
Above-described embodiment is a kind of preferable 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 (10)
1. car horn volume 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, it is characterized in that: described car horn volume varitrol also includes control chip and several environment induction devices, described environment induction device 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.
2. car horn volume varitrol according to claim 1, it is characterized in that: described environment induction device 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.
3. car horn volume varitrol according to claim 1 is characterized in that: described control chip output signal feeds back to described control chip input end.
4. according to claim 1 or 2 or 3 described car horn volume varitrols, it is characterized in that: described car horn volume varitrol also includes key circuit, and described key circuit is electrically connected with the input end of described control chip.
5. according to claim 1 or 2 or 3 described car horn volume varitrols, it is characterized in that: described car horn volume varitrol also includes clock chip, and described clock chip is electrically connected with described control chip.
6. self-regulating method of car horn volume, 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 car horn volume that automatically adjusts of blowing a whistle.
7. the self-regulating method of car horn volume according to claim 6, wherein said suitable volume value is formed by default volume value and the addition of environmental change influence value, described default volume value is imported control chip by the user and is set, 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 influenced by the illuminance situation, be subjected to the environmental change influence value that weather condition influences 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 influences and be subjected to the environmental change influence value of surrounding enviroment noise effect all less than the environmental change influence value that influenced by the illuminance situation.
8. the self-regulating method of car horn volume according to claim 7, wherein said control chip is set with overflow value, gradually ring the addition value on described suitable volume value adds up behind the once suitable volume value of the every output of described control chip again and replace original suitable volume value output, until described suitable volume value more than or equal to described overflow value.
9. the self-regulating method of car horn volume according to claim 6, 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 smaller or equal to described default volume value and described environmental change influence value sum.
10. the self-regulating method of car horn volume according to claim 8, 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, calculate 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 imported control chip by the user and is set.
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| CN102717748A (en) * | 2012-05-25 | 2012-10-10 | 苏州市职业大学 | Intelligent acousto-optic warning system device of automobile whistle |
| CN102802101A (en) * | 2012-08-24 | 2012-11-28 | 上海交通大学 | Device for reducing noise pollution of automobile horn and application of device |
| CN103568941A (en) * | 2013-11-19 | 2014-02-12 | 浙江吉利汽车研究院有限公司 | Automobile driving control device and automobile driving control method |
| 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 |
| CN104608685A (en) * | 2013-11-01 | 2015-05-13 | 株式会社电装 | Vehicle horn control device and horn sound reduction control system |
| CN106648520A (en) * | 2016-09-18 | 2017-05-10 | 惠州Tcl移动通信有限公司 | Volume output control method and device of mobile terminal |
| 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 |
| CN108022579A (en) * | 2018-01-16 | 2018-05-11 | 深圳和而泰小家电智能科技有限公司 | Sounding regulating device, adjusting method and the household electrical appliance of a kind of buzzer |
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| CN104608685A (en) * | 2013-11-01 | 2015-05-13 | 株式会社电装 | Vehicle horn control device and horn sound reduction control system |
| CN103568941A (en) * | 2013-11-19 | 2014-02-12 | 浙江吉利汽车研究院有限公司 | Automobile driving control device and automobile driving control method |
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| CN110246476B (en) * | 2019-04-12 | 2024-01-16 | 福建船政交通职业学院 | Electronic electric horn circuit capable of stepless adjusting tone according to weather conditions |
| CN112096523A (en) * | 2020-08-28 | 2020-12-18 | 深圳市街车网络科技有限公司 | Automobile control method and device and automobile electronic control unit |
| TWI782683B (en) * | 2021-08-31 | 2022-11-01 | 明泰科技股份有限公司 | Automatic loudspeaker volume adjusting system |
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