CN103318080B - Intelligent car-backing annunciator - Google Patents
Intelligent car-backing annunciator Download PDFInfo
- Publication number
- CN103318080B CN103318080B CN201310302430.4A CN201310302430A CN103318080B CN 103318080 B CN103318080 B CN 103318080B CN 201310302430 A CN201310302430 A CN 201310302430A CN 103318080 B CN103318080 B CN 103318080B
- Authority
- CN
- China
- Prior art keywords
- circuit
- signal
- mouth
- backing
- loud speaker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
Embodiments provide a kind of intelligent car-backing annunciator, comprise the loud speaker with sound-electric-sound transformation function; The H bridge power amplification circuit be connected with loud speaker; The microcontroller be connected with H bridge power amplification circuit; Environmental noise acquisition process circuit; Environmental noise acquisition process circuit comprises amplifying circuit, control circuit, level translation conditioning and lock-out circuit; The input end of control circuit is connected with microcontroller, and mouth is connected with the control end of amplifying circuit; The input end of amplifying circuit is connected with loud speaker, and mouth is connected with the input end of lock-out circuit with level translation conditioning; Level translation conditioning is connected with microcontroller with the mouth of lock-out circuit.Intelligent car-backing annunciator provided by the invention can change acoustic pressure sound level along with environmental noise.
Description
Technical field
The present invention relates to sound equipment field, relate to a kind of intelligent car-backing annunciator in particular.
Background technology
Buzzer phone, it is a kind of electronics buzzer 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.
Back-up buzzer is usually with the form information ring alarm that the audio frequency of similar buzzing (hundreds of hertz is to a few kilo hertz) pipes with per minute tens times to up to a hundred times intervals, the acoustic pressure of its design output audio of common back-up buzzer is fixing, is only applicable to vehicle and uses quiet or that noise is very large place at environmental facies.Such as, if the noise of Workplace environment residing for vehicle usually all can very large time, the back-up buzzer installing a high-decibel output on vehicle can be selected, and when Workplace part breath work is quieter, the chimes of doom of the back-up buzzer that high-decibel exports seems again comparatively large, can have influence on the rest of staff.
Summary of the invention
The object of the embodiment of the present invention is to provide a kind of intelligent car-backing annunciator, can not change the defect of acoustic pressure sound level in order to solve existing back-up buzzer along with environmental noise.
A kind of intelligent car-backing annunciator, comprising:
There is the loud speaker of sound-electric-sound transformation function;
The H bridge power amplification circuit be connected with described loud speaker;
The microcontroller be connected with described H bridge power amplification circuit;
Environmental noise acquisition process circuit;
Wherein, described environmental noise acquisition process circuit comprising amplifying circuit for receiving the ac signal that described loud speaker exports, for controlling described amplifier ac amplifier circuit described ac signal being amplified to the control circuit of special ratios intensity, being used for the ac signal after amplifying to carry out level translation conditioning and the lock-out circuit of DC level conversion;
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, DC level signal after described level translation is exported to described microcontroller by described level translation conditioning and lock-out circuit, described microcontroller exports the impulse singla of corresponding dutycycle according to described DC level signal, and described impulse singla drives described loud speaker in order to control described H bridge power amplifier.
Preferably, in above-mentioned intelligent car-backing annunciator, also comprise the signal be placed between described controller and described H bridge power amplification circuit and refute connection circuit.
Preferably, in above-mentioned intelligent car-backing annunciator, also comprise: the conversion of anti-surge protection circuit, DC-to-DC 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, exports the input end of DC-to-DC conversion constant voltage power suspply described in termination;
The input end of DC-to-DC linear stabilized power supply described in the 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 refutes connection circuit;
The mouth of described DC-to-DC linear stabilized power supply connects described controller and described environmental noise acquisition process circuit respectively.
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 the input end that negative electrode changes constant voltage power suspply with described DC-to-DC is connected.
Preferably, in above-mentioned intelligent car-backing annunciator, the mouth of described DC-to-DC linear stabilized power supply and between described level translation conditioning and the mouth of lock-out circuit, a resistance is set.
The intelligent car-backing annunciator that the embodiment of the present invention provides can gather ambient noise signal by the loud speaker with sound-electric-sound transformation function, ambient noise signal is through the sound-electric reverse transformation output AC electric signal of loud speaker, AC signal exports DC level signal after a series of conversion, microcontroller exports corresponding dutycycle impulse singla according to this DC level signal drives loud speaker to carry out electricity-sound conversion with control H bridge power amplifier, loud speaker is made to be the audible ringing signal of relevant pressure intensity by converting electric energy, from above-mentioned, the intelligent car-backing annunciator that the embodiment of the present invention provides is the audible ringing signal exporting respective strengths according to the environmental noise size in the external world, therefore, the intelligent car-backing annunciator that the embodiment of the present invention provides can change acoustic pressure sound level along with environmental noise.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
A kind of structural representation of the intelligent car-backing annunciator that Fig. 1 provides for the embodiment of the present invention;
Another structural representation of the intelligent car-backing annunciator that Fig. 2 provides for the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
See Fig. 1, the embodiment of the present invention provides a kind of structural representation of intelligent car-backing annunciator.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 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 loud speaker traditional electricity-sound transformation function, but also there is sound-electric transformation function, the loud speaker 01 with sound-electric transformation function is equivalent to microphone, intelligent car-backing annunciator is arranged on vehicle or construction machinery and equipment, vehicle or the ambient noise signal residing for construction machinery and equipment are through the sound-electric reverse transformation output AC electric signal of loud speaker 01, this ac signal is more weak, need to carry out amplification process to it, therefore being input to this ac signal with op amp is the amplifying circuit 041 of core, the auxiliary of control circuit 042 with under controlling, faint interchange level signal is amplified to special ratios intensity by amplifying circuit 041, ac signal after amplifying is input to level translation conditioning and lock-out circuit 043, ac signal after amplifying is carried out the conversion of AC-DC signal level and keeps by level translation conditioning and lock-out circuit 043, and the DC level signal after this being converted exports to microcontroller 03, microcontroller 03 exports 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, converting electric energy is the audible ringing signal of relevant pressure intensity by loud speaker 01, afterwards audible ringing signal is exported.
The intelligent car-backing annunciator that the embodiment of the present invention provides can gather ambient noise signal by the loud speaker with sound-electric-sound transformation function, ambient noise signal is through the sound-electric reverse transformation output AC electric signal of loud speaker, AC signal exports DC level signal after a series of conversion, microcontroller exports corresponding dutycycle impulse singla according to this DC level signal drives loud speaker to carry out electricity-sound conversion with control H bridge power amplifier, loud speaker is made to be the audible ringing signal of relevant pressure intensity by converting electric energy, from above-mentioned, the intelligent car-backing annunciator that the embodiment of the present invention provides is the audible ringing signal exporting respective strengths according to the environmental noise size in the external world, therefore, the intelligent car-backing annunciator that the embodiment of the present invention provides can change acoustic pressure sound level along with environmental noise.
See Fig. 2, the embodiment of the present invention provides a kind of structural representation of intelligent car-backing annunciator.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 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 loud speaker traditional electricity-sound transformation function, but also there is sound-electric transformation function, the loud speaker 01 with sound-electric transformation function is equivalent to microphone, intelligent car-backing annunciator is arranged on vehicle or construction machinery and equipment, vehicle or the ambient noise signal residing for construction machinery and equipment are through the sound-electric reverse transformation output AC electric signal of loud speaker 01, this ac signal is more weak, need to carry out amplification process to it, therefore being input to this ac signal with op amp is the amplifying circuit 041 of core, the auxiliary of control circuit 042 with under controlling, faint interchange level signal is amplified to special ratios intensity by amplifying circuit 041, ac signal after amplifying is input to level translation conditioning and lock-out circuit 043, ac signal after amplifying is carried out the conversion of AC-DC signal level and keeps by level translation conditioning and lock-out circuit 043, and the DC level signal after this being converted exports to microcontroller 03, microcontroller 03 exports 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, converting electric energy is the audible ringing signal of relevant pressure intensity by loud speaker 01, afterwards audible ringing signal is exported.
The intelligent car-backing annunciator that the embodiment of the present invention provides can gather ambient noise signal by the loud speaker with sound-electric-sound transformation function, ambient noise signal is through the sound-electric reverse transformation output AC electric signal of loud speaker, AC signal exports DC level signal after a series of conversion, microcontroller exports corresponding dutycycle impulse singla according to this DC level signal drives loud speaker to carry out electricity-sound conversion with control H bridge power amplifier, loud speaker is made to be the audible ringing signal of relevant pressure intensity by converting electric energy, from above-mentioned, the intelligent car-backing annunciator that the embodiment of the present invention provides is the audible ringing signal exporting respective strengths according to the environmental noise size in the external world, therefore, the intelligent car-backing annunciator that the embodiment of the present invention provides can change acoustic pressure sound level along with environmental noise.
Different from above-described embodiment, intelligent car-backing annunciator can also comprise signal and refute 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 H bridge power amplification circuit 02, primarily of a series of NPN aerotron and resistance composition.Signal refutes connection circuit 05 can drive level Transformation Matching, and that is, signal is refuted the TTL logic level control signal that microcontroller 03 can export by connection circuit 05 and is converted into voltage level signal, and this voltage level signal is in order to drive H bridge power amplification circuit 02.In addition, signal refutes the effect that connection circuit 05 can also play current limliting and protection.Can refute at microcontroller 03 and signal between the NPN aerotron in connection circuit 05, signal refutes between the NPN aerotron in connection circuit 05 and the P-channel field-effect transistor (PEFT) pipe in H bridge power amplification circuit 02 and arrange current-limiting resistance respectively, to limit the outgoing current of microcontroller 03.In addition, signal refutes connection circuit 05 can prevent or limit the high voltage pulse of generation 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 H bridge power amplification circuit 02.
Anti-surge protection circuit 06 is connected between the both positive and negative polarity of external power input; export the input end of termination DC-to-DC conversion constant voltage power suspply 07; anti-surge protection circuit 06 can purify and the waveform of stable input supply voltage, and protection late-class circuit is from the interference of the larger electric pulse of peak value and breaking-up.
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 refutes connection circuit 05.The mouth of DC-to-DC linear stabilized power supply 08 connects controller 03 and environmental noise acquisition process circuit 04 respectively.DC-to-DC conversion constant voltage power suspply 07 is for increasing the Applicable scope of input supply voltage, the constant voltage power suspply that H bridge power amplification circuit 02 drives loud speaker 01 power requirement is met to provide, DC-to-DC is changed constant voltage power suspply 07 and is also provided preposition constant voltage power suspply into DC-to-DC linear stabilized power supply 08 simultaneously, for signal refutes the constant voltage power suspply that connection circuit 05 provides circuit power requirement.DC-to-DC linear stabilized power supply 08 provides the constant voltage power suspply meeting controller 03 and environmental noise acquisition process circuit 04 power requirement.
In order to block reversal of power access; can change between constant voltage power suspply 07 at anti-surge protection circuit 06 and DC-to-DC and diode 09 is set; the anode of diode 09 is connected with the mouth of anti-surge protection circuit 06; the input end that negative electrode changes constant voltage power suspply 07 with DC-to-DC is connected; diode 09 can protect components and parts to exempt from reverse breakdown, further can also stablize the voltage waveform that anti-surge protection circuit 06 exports simultaneously.
Further, can a resistance 10 be set between the mouth of DC-to-DC linear stabilized power supply 08 and the mouth of level translation conditioning and lock-out circuit 043, resistance 10 is for connecting a DC level of fixing to microcontroller 03, now namely intelligent car-backing annunciator becomes stationary tone high-decibel intelligent car-backing annunciator, the high-noise environment only required and use and continue high-decibel alarm sound and export can be met easily, now, environmental noise acquisition process circuit 04 can save with cost-saving.
In this specification sheets, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
Finally, also it should be noted that, in this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments 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:
There is the loud speaker of sound-electric-sound transformation function;
The H bridge power amplification circuit be connected with described loud speaker;
The microcontroller be connected with described H bridge power amplification circuit;
Environmental noise acquisition process circuit;
Wherein, described environmental noise acquisition process circuit comprising amplifying circuit for receiving the ac signal that described loud speaker exports, for controlling described amplifying circuit described ac signal being amplified to the control circuit of special ratios intensity, being used for the ac signal after amplifying to carry out level translation conditioning and the lock-out circuit of DC level conversion;
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, DC level signal after described level translation is exported to described microcontroller by described level translation conditioning and lock-out circuit, described microcontroller exports the impulse singla of corresponding dutycycle according to described DC level signal, and 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, also comprises the signal be placed between described controller and described H bridge power amplification circuit and refutes connection circuit.
3. intelligent car-backing annunciator according to claim 2, is characterized in that, also comprise: the conversion of anti-surge protection circuit, DC-to-DC 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, exports the input end of DC-to-DC conversion constant voltage power suspply described in termination;
The input end of DC-to-DC linear stabilized power supply described in the 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 refutes connection circuit;
The mouth of described DC-to-DC linear stabilized power supply connects described controller and described environmental noise acquisition process circuit respectively.
4. intelligent car-backing annunciator according to claim 3, is characterized in that, also comprise diode, and the anode of described diode is connected with the mouth of described anti-surge protection circuit, and the input end that negative electrode changes constant voltage power suspply with described DC-to-DC is connected.
5. the intelligent car-backing annunciator according to claim 3-4 any one, is characterized in that, the mouth of described DC-to-DC linear stabilized power supply and arrange a resistance between described level translation conditioning and the mouth of lock-out circuit.
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103318080A CN103318080A (en) | 2013-09-25 |
| CN103318080B true CN103318080B (en) | 2015-12-09 |
Family
ID=49187232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310302430.4A Active CN103318080B (en) | 2013-07-18 | 2013-07-18 | Intelligent car-backing annunciator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103318080B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112150742B (en) * | 2020-09-18 | 2021-11-12 | 江苏科技大学 | Low-power-consumption acoustic proximity alarm device and alarm method based on sound field perception |
Family Cites Families (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 |
-
2013
- 2013-07-18 CN CN201310302430.4A patent/CN103318080B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103318080A (en) | 2013-09-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105048980B (en) | A kind of D audio frequency amplifier | |
| TW200616317A (en) | Method and apparatus for intelligently setting dead time | |
| CN103318080B (en) | Intelligent car-backing annunciator | |
| CN106686488A (en) | Microphone | |
| CN201956663U (en) | Infrared induction automatic power off alarm device | |
| CN204795685U (en) | Pilot lamp supply circuit and distribution system | |
| CN203984521U (en) | A kind of landline telephone acousto-optic reminiscences | |
| CN203618113U (en) | Audio signal clipping control circuit device with power supply correlation | |
| CN207676647U (en) | A kind of campus dormitory active noise reduction system of powered stable | |
| CN203039847U (en) | Timing control microphone | |
| CN207780781U (en) | Device and electronic equipment applied to translator | |
| CN204669219U (en) | A kind of power supply means for anti-jamming | |
| CN204731904U (en) | A kind of doorbell with recognition function | |
| CN104167805A (en) | Charger for the blind | |
| CN207835773U (en) | A kind of anti-sonic boom power amplifier | |
| CN205648137U (en) | Electricity -saving appliance with drive unit | |
| CN204795570U (en) | Environment audio frequency background sound suppression device | |
| CN204375076U (en) | A kind of guest greeting device of USB port charging | |
| CN201995116U (en) | Sound card control circuit | |
| CN213781151U (en) | Low-power-consumption alarm circuit | |
| CN203423792U (en) | Audio circuit and audio system | |
| CN103581800A (en) | Device capable of preventing reverse connection of single-end audio input interface | |
| CN204744182U (en) | Hearing check out test set | |
| CN207460103U (en) | A kind of high-efficiency amplifier | |
| CN204257198U (en) | A kind of driving circuit utilizing passive piezoelectric buzzer to realize imitative polyphonic ring tone |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |