CN106028218B - Electronic loudspeaker with controllable sound intensity - Google Patents
Electronic loudspeaker with controllable sound intensity Download PDFInfo
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- CN106028218B CN106028218B CN201610519960.8A CN201610519960A CN106028218B CN 106028218 B CN106028218 B CN 106028218B CN 201610519960 A CN201610519960 A CN 201610519960A CN 106028218 B CN106028218 B CN 106028218B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/08—Mouthpieces; Microphones; Attachments therefor
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- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Circuit For Audible Band Transducer (AREA)
- Selective Calling Equipment (AREA)
Abstract
The invention discloses an electronic horn with controllable sound, which comprises a signal sampling circuit, a microphone feedback circuit, a single chip microcomputer U2, a triode control circuit, a driving circuit and a power supply circuit for providing input power for the circuits, wherein the signal sampling circuit is used for collecting remote controller signals and transmitting the remote controller signals to the single chip microcomputer U2, the single chip microcomputer U2 outputs signals to the triode control circuit from a second output end or a first output end after being distinguished, the conduction of an MOS (metal oxide semiconductor) tube of the driving circuit is controlled by the triode control circuit, and high-decibel horn sound or low-decibel horn sound is emitted. The invention can be matched with a vehicle searching signal of a remote controller to send out sound when the decibel is lower than that of a mechanical horn to warn long-time sounding, and simultaneously overcomes the defect that the contact is easy to burn due to short-time sounding of the mechanical horn.
Description
Technical Field
The invention belongs to the technical field of automobile horns, in particular to an electronic horn which can play a role in prompting automobile finding by being matched with a remote controller.
Background
At present, most of remote controllers of high-grade automobiles have the function of searching for the automobile by the remote controllers, and the adopted horn is a mechanical horn for contacting and conducting a circuit by a moving contact and a static contact. Because the mechanical horn in the prior art is mainly used for whistling warning, if the mechanical horn is used for searching a car, the contact ablation problem of the mechanical horn is easy to occur because the car searching whistling time is short; moreover, the short-time sounding sound level of the mechanical horn is high, so that the mechanical horn has the defect of disturbing others; based on the structure, the invention provides the contactless electronic horn which can emit sounds with different decibels according to the difference between the car-searching signal emitted by the remote controller and the horn switch signal of the car.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the electronic horn with controllable sound, the electronic horn can be matched with a vehicle searching signal of a remote controller to emit sound when the decibel is lower than that of a mechanical horn for long-time warning at ordinary times, and the defect that contacts are easy to burn due to short-time sounding of the mechanical horn is overcome.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a controllable electron loudspeaker of sound size which characterized in that: comprises a power supply circuit, a singlechip U2, wherein the input end of the singlechip U2 is respectively connected with a signal sampling circuit and a microphone feedback circuit, the singlechip U2 is connected with a triode control circuit through a first output end and a second output end, the triode control circuit comprises a triode Q3, the input end of the triode Q3 comprises a second output end which is respectively connected with a singlechip U2, the first input end of triode control circuit and triode control circuit second input that the first output of singlechip U2 is connected, the first input end of triode control circuit is connected with diode D3, drive circuit is connected to triode control circuit's output, drive circuit includes the MOS pipe, the first pin connecting resistance R3 of MOS pipe, MOS pipe second pin connecting resistance R4, resistance R3, R4 establishes ties, MOS pipe third pin is connected with horn coil L, the MOS pipe is parallelly connected with protection capacitor C6, C7, MOS pipe is parallelly connected prevents reverse diode D2.
Above-mentioned power supply circuit outputs stable +5V circuit, for signal sampling circuit, miaow head feedback circuit, singlechip U2, triode control circuit and drive circuit provide input power, signal sampling circuit gathers remote controller signal transmission to singlechip U2, singlechip U2 distinguishes the back and switches on from second output or first output signal to triode control circuit and by triode control circuit control drive circuit's MOS pipe, send the loudspeaker sound of high decibel or the loudspeaker sound of low decibel.
According to the further arrangement of the invention, the power supply circuit comprises a diode D1, a diode D1 is connected in series with current-limiting resistors R1 and R2, filter capacitors C1 and C2 at the input ends are connected in parallel between the current-limiting resistor R1 and the current-limiting resistor R2, and electrolytic capacitors C3 and C4 at the output ends are connected in parallel at the output end of the current-limiting resistor R2.
The current in the power circuit is conducted by a diode D1 singly, passes through a current limiting resistor R1 and R2, is filtered and decontaminated by an input end filter capacitor C1 and C2, and then passes through an output end electrolytic capacitor C3 and C4 to output a stable +5V power supply, so as to provide an input power supply for other circuits.
According to the invention, the signal sampling circuit comprises voltage dividing resistors R7 and R8, a voltage stabilizing capacitor C5 connected with the voltage dividing resistor R7 in parallel, a voltage stabilizing diode ZD1, and a voltage stabilizing diode series current limiting resistor R9.
The signal sampling circuit collects signals sent by the remote controller, converts the signals into electric signals to the single chip microcomputer U2, and the electric signals are analyzed, judged and output by the single chip microcomputer U2.
As a further configuration of the present invention, the microphone feedback circuit includes a voltage dividing resistor R5 connected to the power circuit, and the voltage dividing resistor R5 is connected in parallel to the resistor R6 and the electret microphone MT.
The microphone feedback circuit converts sound signals into electric signals through the electret microphone, the electric signals are matched with output signals of the single chip microcomputer, and finally the inherent frequency of the horn diaphragm is matched with the output frequency of the circuit to achieve resonance.
By adopting the scheme, the signal sampling circuit, the microphone feedback circuit, the singlechip U2, the triode control circuit and the drive circuit provide input power through the power circuit, the signal sampling circuit collects signals of a remote controller and transmits the signals to the singlechip U2, when the singlechip U2 detects that the input signals are less than or equal to 300ms, the first output end Mcu-out1 of the singlechip U2 outputs 500Hz square waves with 55% of duty ratio, the second output end Mcu-out2 of the singlechip U2 outputs 100KHz square waves with 80% of duty ratio, the output signals of Mcu-out2 pass through the unidirectional conduction of the diode D3, so that the output signals of Mcu-out1 are superposed with the output signals of the second output Mcu-out2 of the singlechip U2, and the grid voltage is provided for the MOS tube through triode control output, thereby driving the MOS tube to be conducted, the horn to generate squeal, and the decibel of the horn is 90 DB; when the single chip microcomputer U2 detects that an input signal is larger than 300ms, the first output end Mcu-out1 of the single chip microcomputer U2 outputs 500Hz square waves with the duty ratio of 55%, the second output end Mcu-out2 of the single chip microcomputer U2 does not output the square waves, the signals drive the MOS tube through triode control, a horn is enabled to generate a sound, and the decibel of the sound is larger than 105DB of a normal horn.
The invention is further described below with reference to the accompanying drawings.
Drawings
FIG. 1 is a block diagram of an embodiment of the present invention;
FIG. 2 is a circuit diagram of an embodiment of the present invention;
Detailed Description
The specific embodiment of the invention is that shown in fig. 1-2, the electronic horn with controllable sound intensity comprises a power supply circuit and a single chip microcomputer U2, the input end of the single chip microcomputer U2 is respectively connected with a signal sampling circuit and a microphone feedback circuit, the single chip microcomputer U2 is connected with a triode control circuit through a first output end and a second output end, the triode control circuit comprises a triode Q3, the input end of the triode Q3 comprises a triode first input end of the triode control circuit and a second input end of the triode control circuit, the triode first input end is connected with a diode D3, the output end of the triode control circuit is connected with a driving circuit, the driving circuit comprises a MOS tube, a first pin of the MOS tube is connected with a resistor R3, a second pin of the MOS tube is connected with a resistor R4, resistors R3 and R4 are connected in series, a third pin of the MOS tube is connected with a horn coil L, the MOS tube is connected with protective capacitors C6 and C7 in parallel, and the MOS tube is connected with a reverse-connection-preventing diode D2 in series.
Above-mentioned power supply circuit outputs stable +5V circuit, for signal sampling circuit, miaow head feedback circuit, singlechip U2, triode control circuit and drive circuit provide input power, signal sampling circuit gathers remote controller signal transmission to singlechip U2, singlechip U2 distinguishes the back and switches on from second output or first output signal to triode control circuit and by triode control circuit control drive circuit's MOS pipe, send the loudspeaker sound of high decibel or the loudspeaker sound of low decibel.
The power supply circuit comprises a diode D1, a diode D1 is connected in series with current-limiting resistors R1 and R2, input-end filter capacitors C1 and C2 are connected in parallel between the current-limiting resistor R1 and the current-limiting resistor R2, and output-end electrolytic capacitors C3 and C4 are connected in parallel at the output end of the current-limiting resistor R2.
The current in the power circuit is conducted by a diode D1 singly, passes through a current limiting resistor R1 and R2, is filtered and decontaminated by an input end filter capacitor C1 and C2, and then passes through an output end electrolytic capacitor C3 and C4 to output a stable +5V power supply, so as to provide an input power supply for other circuits.
The signal sampling circuit comprises voltage dividing resistors R7 and R8, a voltage stabilizing capacitor C5 connected with the voltage dividing resistor R7 in parallel, a voltage stabilizing diode ZD1, and a current limiting resistor R9 connected with the voltage stabilizing diode in series.
The signal sampling circuit collects signals sent by the remote controller, converts the signals into electric signals to the single chip microcomputer U2, and the electric signals are analyzed, judged and output by the single chip microcomputer U2.
The microphone feedback circuit comprises a voltage dividing resistor R5 connected with the power circuit, and a resistor R6 and an electret microphone MT are connected in parallel with the voltage dividing resistor R5.
The microphone feedback circuit converts sound signals into electric signals through the electret microphone, the electric signals are matched with output signals of the single chip microcomputer, and finally the inherent frequency of the horn diaphragm is matched with the output frequency of the circuit to achieve resonance.
The signal sampling circuit is used for providing an input power supply for the signal sampling circuit, the microphone feedback circuit, the single chip microcomputer U2, the triode control circuit and the driving circuit, the signal sampling circuit is used for collecting a remote controller signal and transmitting the signal to the single chip microcomputer U2, when the single chip microcomputer U2 detects that the input signal is less than or equal to 300ms, the first output end Mcu-out1 of the single chip microcomputer U2 outputs a 500Hz square wave with a 55% duty ratio, the second output end Mcu-out2 of the single chip microcomputer U2 outputs a 100KHz square wave with a 80% duty ratio, the output signal of Mcu-out2 is conducted in a single direction through a diode D3, so that the output signal of Mcu-out1 is superposed with the output signal of the second output Mcu-out2 of the single chip microcomputer U2, and the grid voltage is output to the MOS tube through triode control, thereby driving the MOS tube to be; when the single chip microcomputer U2 detects that an input signal is larger than 300ms, the first output end Mcu-out1 of the single chip microcomputer U2 outputs 500Hz square waves with the duty ratio of 55%, the second output end Mcu-out2 of the single chip microcomputer U2 does not output the square waves, the signals drive the MOS tube through triode control, a horn is enabled to generate a sound, and the decibel of the sound is larger than 105DB of a normal horn.
The present invention is not limited to the above embodiments, and those skilled in the art can implement the present invention in other embodiments according to the disclosure of the present invention, or make simple changes or modifications on the design structure and idea of the present invention, and fall into the protection scope of the present invention.
Claims (5)
1. The utility model provides a controllable electron loudspeaker of sound size which characterized in that: the device comprises a power supply circuit, a singlechip U2, a signal sampling circuit and a microphone feedback circuit which are respectively connected with the input end of a singlechip U2, a singlechip U2 is connected with a triode control circuit through a first output end and a second output end, the triode control circuit comprises a triode Q3, the input end of the triode Q4 comprises a first input end of the triode control circuit and a second input end of the triode control circuit which are respectively connected with the second output end of the singlechip U2 and the first output end of the singlechip U2, the first input end of the triode control circuit is connected with a diode D3, the output end of the triode control circuit is connected with a driving circuit, the driving circuit comprises an MOS 865 tube, a first pin of the MOS tube is connected with a resistor R3, a second pin of the MOS tube is connected with a resistor R4, resistors R3 and R4 are connected in series, a third pin of the MOS tube is connected with a horn coil L, the MOS tube is connected with protective capacitors C6 and, the power supply circuit provides +5V input power for the signal sampling circuit, the microphone feedback circuit, the single chip microcomputer U2, the triode control circuit and the driving circuit, the signal sampling circuit collects signals and transmits the signals to the single chip microcomputer U2, and the single chip microcomputer U2 outputs signals to the triode control circuit from the second output end or the first output end after resolution and controls the conduction of an MOS (metal oxide semiconductor) tube of the driving circuit by the triode control circuit.
2. The controllable sound magnitude electronic horn of claim 1, wherein: the power supply circuit comprises a diode D1, a diode D1 is connected with current-limiting resistors R1 and R2 in series, input end filter capacitors C1 and C2 are connected between the current-limiting resistor R1 and the current-limiting resistor R2 in parallel, and output ends of the current-limiting resistor R2 are connected with output end electrolytic capacitors C3 and C4 in parallel.
3. The sound-level-controllable electronic horn according to claim 1 or 2, wherein: the signal sampling circuit comprises voltage dividing resistors R7 and R8, a voltage stabilizing capacitor C5 and a voltage stabilizing diode ZD1 which are connected with the voltage dividing resistor R7 in parallel, and the voltage stabilizing diode is connected with a current limiting resistor R9 in series.
4. The sound-level-controllable electronic horn according to claim 1 or 2, wherein: the microphone feedback circuit comprises a voltage division resistor R5 connected with a power circuit, and a resistor R6 and an electret microphone MT are connected in parallel with the voltage division resistor R5.
5. The controllable sound magnitude electronic horn of claim 3, wherein: the microphone feedback circuit comprises a voltage division resistor R5 connected with a power circuit, and a resistor R6 and an electret microphone MT are connected in parallel with the voltage division resistor R5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610519960.8A CN106028218B (en) | 2016-06-29 | 2016-06-29 | Electronic loudspeaker with controllable sound intensity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610519960.8A CN106028218B (en) | 2016-06-29 | 2016-06-29 | Electronic loudspeaker with controllable sound intensity |
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| Publication Number | Publication Date |
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| CN106028218A CN106028218A (en) | 2016-10-12 |
| CN106028218B true CN106028218B (en) | 2021-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610519960.8A Active CN106028218B (en) | 2016-06-29 | 2016-06-29 | Electronic loudspeaker with controllable sound intensity |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108848438A (en) * | 2018-08-21 | 2018-11-20 | 佛山市天响机车配件有限公司 | A kind of electronic horn |
Citations (8)
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| JP2002023761A (en) * | 2000-07-03 | 2002-01-25 | Osaka Sairen Seisakusho:Kk | Electronic siren device for vehicle |
| CN101531177A (en) * | 2008-03-10 | 2009-09-16 | 彭国智 | Anti-theft alarm for vehicles |
| CN201577184U (en) * | 2009-12-11 | 2010-09-08 | 长安大学 | Car horn volume control device based on AVR singlechip |
| CN201733426U (en) * | 2009-08-15 | 2011-02-02 | 刘瑜 | Intelligent sound volume controller of automobile sound system |
| CN102855870A (en) * | 2010-09-30 | 2013-01-02 | 曹志才 | Smart control device for electric horn |
| CN103295412A (en) * | 2013-05-28 | 2013-09-11 | 宜昌市天鸿科技有限责任公司 | Music car locator |
| CN203966539U (en) * | 2014-01-13 | 2014-11-26 | 浙江搏奥汽摩部件有限公司 | Electric motor car simulation horn control circuit |
| CN205902058U (en) * | 2016-06-29 | 2017-01-18 | 浙江正泰汽车科技有限公司 | Controllable electron loudspeaker of sound size |
-
2016
- 2016-06-29 CN CN201610519960.8A patent/CN106028218B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002023761A (en) * | 2000-07-03 | 2002-01-25 | Osaka Sairen Seisakusho:Kk | Electronic siren device for vehicle |
| CN101531177A (en) * | 2008-03-10 | 2009-09-16 | 彭国智 | Anti-theft alarm for vehicles |
| CN201733426U (en) * | 2009-08-15 | 2011-02-02 | 刘瑜 | Intelligent sound volume controller of automobile sound system |
| CN201577184U (en) * | 2009-12-11 | 2010-09-08 | 长安大学 | Car horn volume control device based on AVR singlechip |
| CN102855870A (en) * | 2010-09-30 | 2013-01-02 | 曹志才 | Smart control device for electric horn |
| CN103295412A (en) * | 2013-05-28 | 2013-09-11 | 宜昌市天鸿科技有限责任公司 | Music car locator |
| CN203966539U (en) * | 2014-01-13 | 2014-11-26 | 浙江搏奥汽摩部件有限公司 | Electric motor car simulation horn control circuit |
| CN205902058U (en) * | 2016-06-29 | 2017-01-18 | 浙江正泰汽车科技有限公司 | Controllable electron loudspeaker of sound size |
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| CN106028218A (en) | 2016-10-12 |
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