CN104219365A - Vehicular audio set - Google Patents
Vehicular audio set Download PDFInfo
- Publication number
- CN104219365A CN104219365A CN201410405017.5A CN201410405017A CN104219365A CN 104219365 A CN104219365 A CN 104219365A CN 201410405017 A CN201410405017 A CN 201410405017A CN 104219365 A CN104219365 A CN 104219365A
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- 238000004804 winding Methods 0.000 claims description 30
- 239000003990 capacitor Substances 0.000 claims description 6
- 238000010295 mobile communication Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 abstract 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000005236 sound signal Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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Abstract
The invention provides a vehicular audio set comprising an audio input device and an audio output device. The audio input device is connected with a first sampling circuit. The first sampling circuit acquires a volume value of the audio input device and converts the volume value into a corresponding first voltage value; the audio output device is connected with a second sampling circuit; the second sampling circuit acquires a volume value of the audio output device and converts the volume value into a corresponding second voltage value; a first comparator which is hysteresis comparator compares the first voltage value and the second voltage value; if a difference between the first voltage value and the second voltage value exceeds a preset range, the first comparator outputs a differential voltage to a first compensation circuit which is a switching controller; the first compensation circuit outputs a variable duty ratio pule signal according to the differential voltage to control on and off of a switch tube in an audio amplifier circuit and to adjust power output to a speaker.
Description
Technical field
The present invention relates to electronic applications, refer to especially a kind of vehicle-mounted voice equipment.
Background technology
The development of prospect automotive electronic technology, Hyundai Motor electronics from applied electronic devices and components to car in the framework of electronic system all entered a new stage that has internal to improve.Along with the development of automotive semiconductor technology, automobile can become more and more hommization, even can realize the electrification of repertoire, operates more comfortable, convenient, environmental protection, and the demand driving such as the safety of automobile, environmental protection, amusement the fast development of automobile sensor market.
In order to strengthen the auxiliary driving function of system, a kind of intelligent vehicle-carried voice system technology fast development with phonetic function, it is control core that this system adopts single-chip microcomputer, be equipped with several parts such as sensor unit, demonstration, loud speaker, be connected with mobile phone by bluetooth equipment, realize when driving and answer or call.
But existing vehicle-mounted voice phone, the control of its volume is mainly the adjusting by manually realizing volume, need to realize volume adjusting by real key or touch-screen virtual key, at present, does not also have the vehicle-mounted voice phone of automatic regulating volume to occur.
Summary of the invention
The present invention proposes a kind of vehicle-mounted voice equipment, has solved the problem that realizes volume adjusting in prior art by button.
Technical scheme of the present invention is achieved in that
A kind of vehicle-mounted voice equipment, comprise: voice input device and audio output device, described voice input device is connected to loud speaker by audio amplifier circuit, loud speaker is exported the voice signal of another terminal equipment receiving to user, audio output device receives user's voice signal and it is transferred to another terminal equipment by mobile communications network, described voice input device is also connected to the first sample circuit, and the first sample circuit gathers the volume value of voice input device and is converted into corresponding the first magnitude of voltage;
Described audio output device is connected to the second sample circuit, and the second sample circuit gathers the volume value of audio output device and is converted into corresponding second voltage value;
The first comparator is hysteresis comparator, and the first magnitude of voltage and second voltage value are compared, and in the time that the difference of the first magnitude of voltage and second voltage value exceeds preset range, the first comparator output difference threshold voltage is to the first compensating circuit;
The first compensating circuit is on-off controller, according to the adjustable pulse signal of described difference voltage output duty cycle, controls turning on and off of switching tube in audio amplifier circuit, and regulation output is to the power of loud speaker;
Described audio amplifier circuit comprises:
Transformer, comprise former limit winding and secondary winding, former limit winding comprises first end and the second end, secondary winding comprises first end and the second end, former limit winding first end is connected to battery, secondary winding the second end is connected to secondary earth potential, and former limit winding first end and secondary winding the second end are Same Name of Ends;
The first switching tube, its source electrode is connected to transformer primary side winding the second end, and its drain electrode is connected to former limit earth potential, and its grid is connected to the first switch driver;
The first switch driver, comprise the first transistor and transistor seconds, the first transistor is NPN transistor, transistor seconds is PNP transistor, the base stage of the first transistor and transistor seconds links together as control end, and control end receives the pulse signal of described the first compensating circuit output, and the emitter of the first transistor and transistor seconds links together as output, the collector electrode of the first transistor is connected to described battery, and the collector electrode of transistor seconds is connected to former limit earth potential;
The first diode, its anodic bonding is to transformer secondary winding first end, and its negative electrode is connected to the first inductor;
The common port of the first inductor and the first capacitor is as output, and the other end of the first capacitor is connected to secondary earth potential.
The invention has the beneficial effects as follows:
By compensating circuit, the audio signal that is input to voice input device is carried out to power back-off, automatically regulate the volume of loud speaker according to the volume difference of the audio signal receiving and export, user's call is experienced comfortable, and the setting that can omit volume key, further improves user's experience.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the control block diagram of vehicle-mounted voice equipment of the present invention;
Fig. 2 is the circuit diagram of audio amplifier circuit.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, vehicle-mounted voice equipment of the present invention, comprise: voice input device 100 and audio output device 400, described voice input device 100 is connected to loud speaker 800 by audio amplifier circuit 700, loud speaker 800 is exported the voice signal of another terminal equipment receiving to user, audio output device 400 receives user's voice signal and it is transferred to another terminal equipment by mobile communications network, described voice input device 100 is also connected to the first sample circuit 200, the first sample circuit 200 gathers the volume value of voice input device 100 and is converted into corresponding the first magnitude of voltage, described audio output device 400 is connected to the second sample circuit 300, the second sample circuits 300 and gathers the volume value of audio output device and be converted into corresponding second voltage value, the first comparator 500 is hysteresis comparator, and the first magnitude of voltage and second voltage value are compared, and in the time that the difference of the first magnitude of voltage and second voltage value exceeds preset range, the first comparator output difference threshold voltage is to the first compensating circuit 600, the first compensating circuit 600 is on-off controller, according to the adjustable pulse signal of described difference voltage output duty cycle, controls turning on and off of switching tube in audio amplifier circuit 700, and regulation output is to the power of loud speaker.
As shown in Figure 2, described audio amplifier circuit comprises: transformer 51, comprise former limit winding and secondary winding, former limit winding comprises first end and the second end, secondary winding comprises first end and the second end, former limit winding first end is connected to battery as input, and secondary winding the second end is connected to secondary earth potential, and former limit winding first end and secondary winding the second end are Same Name of Ends; The first switching tube 52, its source electrode is connected to transformer primary side winding the second end, and its drain electrode is connected to former limit earth potential, and its grid is connected to the first switch driver 53; The first switch driver 53, comprise the first transistor and transistor seconds, the first transistor is NPN transistor, transistor seconds is PNP transistor, the base stage of the first transistor and transistor seconds links together as control end, the emitter of the first transistor and transistor seconds links together as output, and the collector electrode of the first transistor is connected to battery, and the collector electrode of transistor seconds is connected to former limit earth potential; The first diode 54, its anodic bonding is to transformer secondary winding first end, and its negative electrode is connected to the first inductor 55; The common port of the first inductor 55 and the first capacitor 56 is as output, and the other end of the first capacitor 56 is connected to secondary earth potential.
The impulse circuit of described the first compensating circuit output is couple to the control end of the first switch driver 53, the turn-on and turn-off of control switch pipe.
Vehicle-mounted voice equipment of the present invention, by compensating circuit, the audio signal that is input to voice input device is carried out to power back-off, automatically regulate the volume of loud speaker according to the volume difference of the audio signal receiving and export, make user's call experience comfortable, and the setting that can omit volume key, further improve user's experience.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (1)
1. a vehicle-mounted voice equipment, comprise: voice input device and audio output device, described voice input device is connected to loud speaker by audio amplifier circuit, loud speaker is exported the voice signal of another terminal equipment receiving to user, audio output device receives user's voice signal and it is transferred to another terminal equipment by mobile communications network, it is characterized in that
Described voice input device is also connected to the first sample circuit, and the first sample circuit gathers the volume value of voice input device and is converted into corresponding the first magnitude of voltage;
Described audio output device is connected to the second sample circuit, and the second sample circuit gathers the volume value of audio output device and is converted into corresponding second voltage value;
The first comparator is hysteresis comparator, and the first magnitude of voltage and second voltage value are compared, and in the time that the difference of the first magnitude of voltage and second voltage value exceeds preset range, the first comparator output difference threshold voltage is to the first compensating circuit;
The first compensating circuit is on-off controller, according to the adjustable pulse signal of described difference voltage output duty cycle, controls turning on and off of switching tube in audio amplifier circuit, and regulation output is to the power of loud speaker;
Described audio amplifier circuit comprises:
Transformer, comprise former limit winding and secondary winding, former limit winding comprises first end and the second end, secondary winding comprises first end and the second end, former limit winding first end is connected to battery, secondary winding the second end is connected to secondary earth potential, and former limit winding first end and secondary winding the second end are Same Name of Ends;
The first switching tube, its source electrode is connected to transformer primary side winding the second end, and its drain electrode is connected to former limit earth potential, and its grid is connected to the first switch driver;
The first switch driver, comprise the first transistor and transistor seconds, the first transistor is NPN transistor, transistor seconds is PNP transistor, the base stage of the first transistor and transistor seconds links together as control end, and control end receives the pulse signal of described the first compensating circuit output, and the emitter of the first transistor and transistor seconds links together as output, the collector electrode of the first transistor is connected to described battery, and the collector electrode of transistor seconds is connected to former limit earth potential;
The first diode, its anodic bonding is to transformer secondary winding first end, and its negative electrode is connected to the first inductor;
The common port of the first inductor and the first capacitor is as output, and the other end of the first capacitor is connected to secondary earth potential.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410405017.5A CN104219365A (en) | 2014-08-15 | 2014-08-15 | Vehicular audio set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410405017.5A CN104219365A (en) | 2014-08-15 | 2014-08-15 | Vehicular audio set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104219365A true CN104219365A (en) | 2014-12-17 |
Family
ID=52100486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410405017.5A Pending CN104219365A (en) | 2014-08-15 | 2014-08-15 | Vehicular audio set |
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| Country | Link |
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| CN (1) | CN104219365A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104158969A (en) * | 2014-08-18 | 2014-11-19 | 青岛蓝图文化传播有限公司市南分公司 | Mobile phone volume adjusting device |
| CN104218911A (en) * | 2014-09-02 | 2014-12-17 | 青岛蓝图文化传播有限公司市南分公司 | Voice control system of vehicle-mounted equipment |
| CN111028800A (en) * | 2019-12-11 | 2020-04-17 | 成都中电熊猫显示科技有限公司 | Signal compensation method, device, system, electronic equipment and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000059110A2 (en) * | 1999-03-30 | 2000-10-05 | Qualcomm Incorporated | Method and apparatus for automatically adjusting speaker and microphone gains within a mobile telephone |
| CN101771390A (en) * | 2008-12-30 | 2010-07-07 | 英业达股份有限公司 | Sound output and input system and volume output adjusting method thereof |
| CN201699793U (en) * | 2010-06-29 | 2011-01-05 | 娄亚涛 | Automatic adjustor for sound volume of mobile phone |
| CN103002106A (en) * | 2012-10-16 | 2013-03-27 | 东莞宇龙通信科技有限公司 | Mobile terminal and method for adjusting volume thereof |
-
2014
- 2014-08-15 CN CN201410405017.5A patent/CN104219365A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000059110A2 (en) * | 1999-03-30 | 2000-10-05 | Qualcomm Incorporated | Method and apparatus for automatically adjusting speaker and microphone gains within a mobile telephone |
| CN101771390A (en) * | 2008-12-30 | 2010-07-07 | 英业达股份有限公司 | Sound output and input system and volume output adjusting method thereof |
| CN201699793U (en) * | 2010-06-29 | 2011-01-05 | 娄亚涛 | Automatic adjustor for sound volume of mobile phone |
| CN103002106A (en) * | 2012-10-16 | 2013-03-27 | 东莞宇龙通信科技有限公司 | Mobile terminal and method for adjusting volume thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104158969A (en) * | 2014-08-18 | 2014-11-19 | 青岛蓝图文化传播有限公司市南分公司 | Mobile phone volume adjusting device |
| CN104218911A (en) * | 2014-09-02 | 2014-12-17 | 青岛蓝图文化传播有限公司市南分公司 | Voice control system of vehicle-mounted equipment |
| CN111028800A (en) * | 2019-12-11 | 2020-04-17 | 成都中电熊猫显示科技有限公司 | Signal compensation method, device, system, electronic equipment and storage medium |
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Application publication date: 20141217 |
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