CN103318080A - Intelligent reversing alarming device - Google Patents
Intelligent reversing alarming device Download PDFInfo
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- CN103318080A CN103318080A CN2013103024304A CN201310302430A CN103318080A CN 103318080 A CN103318080 A CN 103318080A CN 2013103024304 A CN2013103024304 A CN 2013103024304A CN 201310302430 A CN201310302430 A CN 201310302430A CN 103318080 A CN103318080 A CN 103318080A
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Abstract
The embodiment of the invention provides an intelligent reversing alarm device. The intelligent reversing alarm device comprises a loudspeaker with a sound-electricity-sound conversion function, an H bridge power amplification circuit connected with the loudspeaker, a microcontroller connected with the H bridge power amplification circuit as well as an environment noise collection processing circuit, wherein the environment noise collection processing circuit comprises an amplifying circuit, a control circuit, a level translation conditioning and retaining circuit; the input end of the control circuit is connected with a microcontroller, the output end of the control circuit is connected with a control end of the amplifying circuit, the input end of the amplifying circuit is connected with the loudspeaker, and the output end of the amplifying circuit is connected with the input end of the level translation conditioning and retaining circuit; the output end of the level translation conditioning and retaining circuit is connected with the microcontroller. The intelligent reversing alarm device provided by the invention can change sound pressure sound level along with environmental noises.
Description
Technical field
The present invention relates to the sound equipment field, relate in particular a kind of intelligent car-backing annunciator.
Background technology
Buzzer phone, it is a kind of electronics information ring device of integral structure, adopt DC-voltage supply, be widely used in the electronic products such as computing machine, chopping machine, duplicator, annunciator, electronic toy, vehicle electronics, machinery electronic equipment, telephone set, timer as microphone device.
The form information ring alarms that back-up buzzer intermittently pipes for tens times to up to a hundred times with per minute with the audio frequency (the hundreds of hertz is to several kilo hertzs) of similar buzzing usually, the acoustic pressure of its design output audio of common back-up buzzer is fixed, and is only applicable to vehicle and at environmental facies peace and quiet or the very large place of noise is used.For example, when if the noise of vehicle Workplace environment of living in usually all can be very large, can be chosen in the back-up buzzer that a high-decibel output is installed on the vehicle, and partly cease the worker when quiet when Workplace, the chimes of doom of the back-up buzzer of high-decibel output seems again larger, can have influence on staff's rest.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of intelligent car-backing annunciator, can not change along with environmental noise the defective of acoustic pressure sound level in order to solve existing back-up buzzer.
A kind of intelligent car-backing annunciator comprises:
Loud speaker with sound-electric-sound transformation function;
The H bridge power amplification circuit that is connected with described loud speaker;
The microcontroller that is connected with described H bridge power amplification circuit;
Environmental noise acquisition process circuit;
Wherein, described environmental noise acquisition process circuit comprise amplifying circuit be used to the ac signal that receives the output of described loud speaker, be used for controlling described amplifier ac amplifier circuit with described ac signal be amplified to special ratios intensity control circuit, be used for level translation conditioning and the lock-out circuit that will carry out the DC level conversion through the ac signal after the amplification;
The input end of described control circuit is connected with described microcontroller, and mouth is connected with the control end of described amplifying circuit;
The input end of described amplifying circuit is connected with described loud speaker, and mouth is connected with the input end of lock-out circuit with described level translation conditioning;
Described level translation conditioning is connected with described microcontroller with the mouth of lock-out circuit, described level translation conditioning and the lock-out circuit dc level signal after with described level translation is exported to described microcontroller, described microcontroller is exported the impulse singla of corresponding dutycycle according to described dc level signal, described impulse singla drives described loud speaker in order to control described H bridge power amplifier.
Preferably, in above-mentioned intelligent car-backing annunciator, comprise that also the signal that places between described controller and the described H bridge power amplification circuit refutes connection circuit.
Preferably, in above-mentioned intelligent car-backing annunciator, also comprise: anti-surge protection circuit, DC-to-DC conversion constant voltage power suspply, DC-to-DC linear stabilized power supply;
Wherein, described anti-surge protection circuit is connected between the both positive and negative polarity of external power input, the input end of the described DC-to-DC conversion of output termination constant voltage power suspply;
The input end of the described DC-to-DC linear stabilized power supply of output termination of described DC-to-DC conversion constant voltage power suspply, the mouth of described DC-to-DC conversion constant voltage power suspply also connects described H bridge power amplification circuit and described signal is refuted connection circuit;
The mouth of described DC-to-DC linear stabilized power supply connects respectively described controller and described environmental noise acquisition process circuit.
Preferably, in above-mentioned intelligent car-backing annunciator, also comprise diode, the anode of described diode is connected with the mouth of described anti-surge protection circuit, and negative electrode is connected with the input end of described DC-to-DC conversion constant voltage power suspply.
Preferably, in above-mentioned intelligent car-backing annunciator, between the mouth of the mouth of described DC-to-DC linear stabilized power supply and described level translation conditioning and lock-out circuit a resistance is set.
The intelligent car-backing annunciator that the embodiment of the invention provides can be sound-electric by having-and the loud speaker of sound transformation function gathers ambient noise signal, ambient noise signal is through the sound-electric reverse transformation output AC electric signal of loud speaker, AC signal is through the flat signal of output DC after a series of conversions, microcontroller is exported corresponding dutycycle according to this dc level signal impulse singla carries out electricity-sound conversion with control H bridge power amplifier driving loud speaker, make loud speaker electric energy be changed into the audible ringing signal of relevant pressure intensity, by as seen above-mentioned, the intelligent car-backing annunciator that the embodiment of the invention provides is the audible ringing signal according to the environmental noise size output respective strengths in the external world, therefore, the intelligent car-backing annunciator that provides of the embodiment of the invention can change the acoustic pressure sound level along with environmental noise.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiments of the invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to the accompanying drawing that provides other accompanying drawing.
A kind of structural representation of the intelligent car-backing annunciator that Fig. 1 provides for the embodiment of the invention;
Another structural representation of the intelligent car-backing annunciator that Fig. 2 provides for the embodiment of the invention.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Referring to Fig. 1, the embodiment of the invention provides a kind of structural representation of intelligent car-backing annunciator.The intelligent car-backing annunciator comprises loud speaker 01, H bridge power amplification circuit 02, microcontroller 03 and environmental noise acquisition process circuit 04, and this environmental noise acquisition process circuit 04 comprises again amplifying circuit 041, control circuit 042 and level translation conditioning and lock-out circuit 043.
Wherein, H bridge power amplification circuit 02 is connected with loud speaker 01, microcontroller 03 is connected with H bridge power amplification circuit 02, the input end of control circuit 042 is connected with microcontroller 03, mouth is connected with the control end of amplifying circuit 041, the input end of amplifying circuit 041 is connected with loud speaker 01, and mouth is connected with the input end of level translation conditioning with lock-out circuit 043, and the level translation conditioning is connected with microcontroller 03 with the mouth of lock-out circuit 043.
The loud speaker 01 that the present embodiment provides not only has the traditional electricity of loud speaker-sound transformation function, but also has sound-electric transformation function, loud speaker 01 with sound-electric transformation function is equivalent to microphone, the intelligent car-backing annunciator is installed on vehicle or the construction machinery and equipment, the residing ambient noise signal of vehicle or construction machinery and equipment is through the sound-electric reverse transformation output AC electric signal of loud speaker 01, this ac signal a little less than, need to amplify processing to it, therefore this ac signal is input to the amplifying circuit 041 take op amp as core, under the auxiliary and control of control circuit 042, amplifying circuit 041 is amplified to special ratios intensity with faint interchange level signal, be input to level translation conditioning and lock-out circuit 043 through the ac signal after amplifying, level translation conditioning and lock-out circuit 043 will carry out the conversion of AC-DC signal level and keep through the ac signal after amplifying, and the dc level signal after this conversion exported to microcontroller 03, microcontroller 03 is exported the impulse singla of corresponding dutycycle according to this level signal, this impulse singla control H bridge power amplifier 02 carries out electricity-sound conversion with the power drive loud speaker 01 of correspondence, loud speaker 01 changes electric energy into the audible ringing signal of relevant pressure intensity, afterwards audible ringing signal is exported.
The intelligent car-backing annunciator that the embodiment of the invention provides can be sound-electric by having-and the loud speaker of sound transformation function gathers ambient noise signal, ambient noise signal is through the sound-electric reverse transformation output AC electric signal of loud speaker, AC signal is through the flat signal of output DC after a series of conversions, microcontroller is exported corresponding dutycycle according to this dc level signal impulse singla carries out electricity-sound conversion with control H bridge power amplifier driving loud speaker, make loud speaker electric energy be changed into the audible ringing signal of relevant pressure intensity, by as seen above-mentioned, the intelligent car-backing annunciator that the embodiment of the invention provides is the audible ringing signal according to the environmental noise size output respective strengths in the external world, therefore, the intelligent car-backing annunciator that provides of the embodiment of the invention can change the acoustic pressure sound level along with environmental noise.
Referring to Fig. 2, the embodiment of the invention provides a kind of structural representation of intelligent car-backing annunciator.The intelligent car-backing annunciator comprises loud speaker 01, H bridge power amplification circuit 02, microcontroller 03 and environmental noise acquisition process circuit 04, and this environmental noise acquisition process circuit 04 comprises again amplifying circuit 041, control circuit 042 and level translation conditioning and lock-out circuit 043.
Wherein, H bridge power amplification circuit 02 is connected with loud speaker 01, microcontroller 03 is connected with H bridge power amplification circuit 02, the input end of control circuit 042 is connected with microcontroller 03, mouth is connected with the control end of amplifying circuit 041, the input end of amplifying circuit 041 is connected with loud speaker 01, and mouth is connected with the input end of level translation conditioning with lock-out circuit 043, and the level translation conditioning is connected with microcontroller 03 with the mouth of lock-out circuit 043.
The loud speaker 01 that the present embodiment provides not only has the traditional electricity of loud speaker-sound transformation function, but also has sound-electric transformation function, loud speaker 01 with sound-electric transformation function is equivalent to microphone, the intelligent car-backing annunciator is installed on vehicle or the construction machinery and equipment, the residing ambient noise signal of vehicle or construction machinery and equipment is through the sound-electric reverse transformation output AC electric signal of loud speaker 01, this ac signal a little less than, need to amplify processing to it, therefore this ac signal is input to the amplifying circuit 041 take op amp as core, under the auxiliary and control of control circuit 042, amplifying circuit 041 is amplified to special ratios intensity with faint interchange level signal, be input to level translation conditioning and lock-out circuit 043 through the ac signal after amplifying, level translation conditioning and lock-out circuit 043 will carry out the conversion of AC-DC signal level and keep through the ac signal after amplifying, and the dc level signal after this conversion exported to microcontroller 03, microcontroller 03 is exported the impulse singla of corresponding dutycycle according to this level signal, this impulse singla control H bridge power amplifier 02 carries out electricity-sound conversion with the power drive loud speaker 01 of correspondence, loud speaker 01 changes electric energy into the audible ringing signal of relevant pressure intensity, afterwards audible ringing signal is exported.
The intelligent car-backing annunciator that the embodiment of the invention provides can be sound-electric by having-and the loud speaker of sound transformation function gathers ambient noise signal, ambient noise signal is through the sound-electric reverse transformation output AC electric signal of loud speaker, AC signal is through the flat signal of output DC after a series of conversions, microcontroller is exported corresponding dutycycle according to this dc level signal impulse singla carries out electricity-sound conversion with control H bridge power amplifier driving loud speaker, make loud speaker electric energy be changed into the audible ringing signal of relevant pressure intensity, by as seen above-mentioned, the intelligent car-backing annunciator that the embodiment of the invention provides is the audible ringing signal according to the environmental noise size output respective strengths in the external world, therefore, the intelligent car-backing annunciator that provides of the embodiment of the invention can change the acoustic pressure sound level along with environmental noise.
Different from above-described embodiment, the intelligent car-backing annunciator can also comprise that signal refutes connection circuit 05, anti-surge protection circuit 06, DC-to-DC conversion constant voltage power suspply 07, DC-to-DC linear stabilized power supply 08 and diode 09.
Signal is refuted connection circuit 05 and is placed between controller 03 and the H bridge power amplification circuit 02, mainly is comprised of a series of NPN aerotrons and resistance.Signal is refuted connection circuit 05 can the drive level Transformation Matching, that is to say, signal is refuted connection circuit 05 can be converted into voltage level signal with the TTL logic level control signal of microcontroller 03 output, and this voltage level signal is in order to drive H bridge power amplification circuit 02.In addition, signal is refuted the effect that connection circuit 05 can also play current limliting and protection.Can be between microcontroller 03 and signal be refuted NPN aerotron in the connection circuit 05, signal refutes between NPN aerotron in the connection circuit 05 and the P-channel field-effect transistor (PEFT) pipe in the H bridge power amplification circuit 02 current-limiting resistance is set respectively, with the outgoing current of restriction microcontroller 03.In addition, signal is refuted connection circuit 05 and can be prevented or limit the high voltage pulse that produces when H bridge power amplification circuit 02 carries out power drive to the reverse breakdown of device, in order to protect the field effect transistor in microcontroller 03 and the H bridge power amplification circuit 02.
The input end of the output termination DC-to-DC linear stabilized power supply 08 of DC-to-DC conversion constant voltage power suspply 07, the mouth of DC-to-DC conversion constant voltage power suspply 07 also connects H bridge power amplification circuit 02 and signal is refuted connection circuit 05.The mouth of DC-to-DC linear stabilized power supply 08 connects respectively controller 03 and environmental noise acquisition process circuit 04.DC-to-DC conversion constant voltage power suspply 07 is used for increasing the Applicable scope of input supply voltage, meet the constant voltage power suspply that H bridge power amplification circuit 02 drives loud speaker 01 power requirement to provide, DC-to-DC conversion constant voltage power suspply 07 is simultaneously also for DC-to-DC linear stabilized power supply 08 provides preposition constant voltage power suspply, for signal is refuted the constant voltage power suspply that connection circuit 05 provides the circuit supply requirement.DC-to-DC linear stabilized power supply 08 provides the constant voltage power suspply that meets controller 03 and environmental noise acquisition process circuit 04 power requirement.
In order to block the reversal of power access; can between anti-surge protection circuit 06 and DC-to-DC conversion constant voltage power suspply 07, diode 09 be set; the anode of diode 09 is connected with the mouth of anti-surge protection circuit 06; negative electrode is connected with the input end of DC-to-DC conversion constant voltage power suspply 07; diode 09 can protect components and parts to exempt from reverse breakdown, can also further stablize the voltage waveform of anti-surge protection circuit 06 output simultaneously.
Further, can between the mouth of the mouth of DC-to-DC linear stabilized power supply 08 and level translation conditioning and lock-out circuit 043, a resistance 10 be set, resistance 10 is used for connecting a fixing DC level and arrives microcontroller 03, this moment, the intelligent car-backing annunciator namely became stationary tone high-decibel intelligent car-backing annunciator, can satisfy easily and only require the high-noise environment that uses lasting high-decibel alarm sound output, at this moment, environmental noise acquisition process circuit 04 can save to save cost.
Each embodiment adopts the mode of going forward one by one to describe in this specification sheets, and what each embodiment stressed is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
At last, also need to prove, in this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby not only comprise those key elements so that comprise process, method, article or the equipment of a series of key elements, but also comprise other key elements of clearly not listing, or also be included as the intrinsic key element of this process, method, article or equipment.In the situation that not more restrictions, the key element that is limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can be in the situation that do not break away from the spirit or scope of the present invention, in other embodiments realization.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (5)
1. an intelligent car-backing annunciator is characterized in that, comprising:
Loud speaker with sound-electric-sound transformation function;
The H bridge power amplification circuit that is connected with described loud speaker;
The microcontroller that is connected with described H bridge power amplification circuit;
Environmental noise acquisition process circuit;
Wherein, described environmental noise acquisition process circuit comprise amplifying circuit be used to the ac signal that receives the output of described loud speaker, be used for controlling described amplifier ac amplifier circuit with described ac signal be amplified to special ratios intensity control circuit, be used for level translation conditioning and the lock-out circuit that will carry out the DC level conversion through the ac signal after the amplification;
The input end of described control circuit is connected with described microcontroller, and mouth is connected with the control end of described amplifying circuit;
The input end of described amplifying circuit is connected with described loud speaker, and mouth is connected with the input end of lock-out circuit with described level translation conditioning;
Described level translation conditioning is connected with described microcontroller with the mouth of lock-out circuit, described level translation conditioning and the lock-out circuit dc level signal after with described level translation is exported to described microcontroller, described microcontroller is exported the impulse singla of corresponding dutycycle according to described dc level signal, described impulse singla drives described loud speaker in order to control described H bridge power amplifier.
2. intelligent car-backing annunciator according to claim 1 is characterized in that, comprises that also the signal that places between described controller and the described H bridge power amplification circuit refutes connection circuit.
3. intelligent car-backing annunciator according to claim 2 is characterized in that, also comprises: anti-surge protection circuit, DC-to-DC conversion constant voltage power suspply, DC-to-DC linear stabilized power supply;
Wherein, described anti-surge protection circuit is connected between the both positive and negative polarity of external power input, the input end of the described DC-to-DC conversion of output termination constant voltage power suspply;
The input end of the described DC-to-DC linear stabilized power supply of output termination of described DC-to-DC conversion constant voltage power suspply, the mouth of described DC-to-DC conversion constant voltage power suspply also connects described H bridge power amplification circuit and described signal is refuted connection circuit;
The mouth of described DC-to-DC linear stabilized power supply connects respectively described controller and described environmental noise acquisition process circuit.
4. intelligent car-backing annunciator according to claim 3 is characterized in that, also comprises diode, and the anode of described diode is connected with the mouth of described anti-surge protection circuit, and negative electrode is connected with the input end of described DC-to-DC conversion constant voltage power suspply.
5. the described intelligent car-backing annunciator of any one is characterized in that according to claim 3-4, between the mouth of the mouth of described DC-to-DC linear stabilized power supply and described level translation conditioning and lock-out circuit a resistance is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310302430.4A CN103318080B (en) | 2013-07-18 | 2013-07-18 | Intelligent car-backing annunciator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310302430.4A CN103318080B (en) | 2013-07-18 | 2013-07-18 | Intelligent car-backing annunciator |
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| Publication Number | Publication Date |
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| CN103318080A true CN103318080A (en) | 2013-09-25 |
| CN103318080B CN103318080B (en) | 2015-12-09 |
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| CN201310302430.4A Expired - Fee Related CN103318080B (en) | 2013-07-18 | 2013-07-18 | Intelligent car-backing annunciator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105270257A (en) * | 2015-08-17 | 2016-01-27 | 深圳市美好幸福生活安全系统有限公司 | Automatic alarm-volume regulating method in automotive advanced driving assistance |
| WO2022057240A1 (en) * | 2020-09-18 | 2022-03-24 | 江苏科技大学 | Sound field perception-based low-power acoustic proximity alarm apparatus and alarm method |
| CN114987332A (en) * | 2022-06-07 | 2022-09-02 | 东风柳州汽车有限公司 | Self-adaptive sound pressure level backing alarm method, device and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2772118Y (en) * | 2005-02-28 | 2006-04-12 | 江苏技术师范学院 | Motor vehicle reverse alarm |
| CN201638312U (en) * | 2010-02-01 | 2010-11-17 | 汉得利（常州）电子有限公司 | Adjustable intelligent sound pressure warner device |
| CN102678779A (en) * | 2012-03-19 | 2012-09-19 | 吉林大学 | Automatic vehicle clutch system driven by motor |
-
2013
- 2013-07-18 CN CN201310302430.4A patent/CN103318080B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2772118Y (en) * | 2005-02-28 | 2006-04-12 | 江苏技术师范学院 | Motor vehicle reverse alarm |
| CN201638312U (en) * | 2010-02-01 | 2010-11-17 | 汉得利（常州）电子有限公司 | Adjustable intelligent sound pressure warner device |
| CN102678779A (en) * | 2012-03-19 | 2012-09-19 | 吉林大学 | Automatic vehicle clutch system driven by motor |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105270257A (en) * | 2015-08-17 | 2016-01-27 | 深圳市美好幸福生活安全系统有限公司 | Automatic alarm-volume regulating method in automotive advanced driving assistance |
| CN105270257B (en) * | 2015-08-17 | 2017-12-12 | 深圳市美好幸福生活安全系统有限公司 | The advanced alarm volume automatic regulating method driven in auxiliary of automobile |
| WO2022057240A1 (en) * | 2020-09-18 | 2022-03-24 | 江苏科技大学 | Sound field perception-based low-power acoustic proximity alarm apparatus and alarm method |
| CN114987332A (en) * | 2022-06-07 | 2022-09-02 | 东风柳州汽车有限公司 | Self-adaptive sound pressure level backing alarm method, device and system |
| CN114987332B (en) * | 2022-06-07 | 2024-06-04 | 东风柳州汽车有限公司 | Self-adaptive sound pressure level reversing alarm method, device and system |
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Granted publication date: 20151209 |