CN202095072U - High-sound-quality intelligent vehicle-mounted terminal equipment capable of being used for Internet of Things and Internet of Vehicles - Google Patents
High-sound-quality intelligent vehicle-mounted terminal equipment capable of being used for Internet of Things and Internet of Vehicles Download PDFInfo
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- CN202095072U CN202095072U CN2011202033425U CN201120203342U CN202095072U CN 202095072 U CN202095072 U CN 202095072U CN 2011202033425 U CN2011202033425 U CN 2011202033425U CN 201120203342 U CN201120203342 U CN 201120203342U CN 202095072 U CN202095072 U CN 202095072U
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- intelligent vehicle
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Abstract
The utility model discloses high-sound-quality intelligent vehicle-mounted terminal equipment capable of being used for the Internet of Things and the Internet of Vehicles, which comprises an intelligent vehicle-mounted terminal equipment body. A voltage increasing module which is used for increasing voltage to the required voltage for the working of an audio power amplifier module, an audio decoding module which is used for converting digital audio signals into analog audio signals, a power amplifier module which is used for amplifying the analog audio signals output by an audio module and a speaker which is used for outputting sound are arranged in the intelligent vehicle-mounted terminal equipment body, wherein the voltage increasing module, the audio decoding module and the speaker are respectively connected with the power amplifier module. Since the voltage increasing module, the audio decoding module and the two-channel power amplifier module are used and devices such as metal oxide semiconductor (MOS) tube, an inductor and a diode are added in the voltage increasing module, a power supply circuit is stabilized to supply stable drive voltage to the power amplifier module, the dual-channel power amplifier module can keep power amplification distortion to be small and the sound quality of the intelligent vehicle-mounted terminal equipment can be greatly improved.
Description
Technical field
The utility model relates to a kind of can the monitoring in real time and the informationalized vehicle electronic device of realization car operation by support unit, particularly a kind of high tone quality intelligent vehicle mounted terminal equipment that can be used for Internet of Things and car networking.
Background technology
Car-mounted terminal equipment has the function of sound broadcast, has made things convenient for the passenger to recognize the position at own place in real time, in time reminds the passenger to get off, and great convenience also is provided for simultaneously the debugging of vehicle.Along with the continuous development of Bus informationization, the application of intelligent bus monitoring and dispatching patcher more and more widely, this makes that the requirement of car-mounted terminal equipment is also more and more higher, particularly at the requirement of car-mounted terminal equipment tonequality.
Traditional car-mounted terminal equipment all adopts monophony simulation or digital power amplifier, and its distortion is bigger, make tonequality also general, and power circuit is fairly simple, can't provide the dual track high power amplifier required operating voltage.
Thereby prior art is still waiting to improve and improve.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art part, the purpose of this utility model is to provide a kind of high tone quality intelligent vehicle mounted terminal equipment that can be used for Internet of Things and car networking, can improve the tonequality of intelligent vehicle mounted terminal equipment.
In order to achieve the above object, the utility model has been taked following technical scheme:
A kind of high tone quality intelligent vehicle mounted terminal equipment that can be used for Internet of Things and car networking, it comprises the intelligent vehicle mounted terminal apparatus body, wherein, in described intelligent vehicle mounted terminal apparatus body, be provided with: the boost module that is used for voltage is increased to audio frequency power amplifier module work required voltage; Be used for digital audio and video signals is converted to the audio decoder module of simulated audio signal; Be used for the power amplifier module that the simulated audio signal with audio-frequency module output amplifies; The loudspeaker that are used for output sound; Described boost module, audio decoder module and loudspeaker are connected with power amplifier module respectively.
The described high tone quality intelligent vehicle mounted terminal equipment that can be used for Internet of Things and car networking, wherein, described boost module comprises switching power source chip, metal-oxide-semiconductor, first inductance L 1 and the diode; The VIN port of described switching power source chip is connected with the anode of diode by described first inductance L 1, and the negative electrode of diode is connected with power amplifier module; The grid of described metal-oxide-semiconductor is connected with the DR port of switching power source chip, and drain electrode is connected source ground with the anode of diode.
The described high tone quality intelligent vehicle mounted terminal equipment that can be used for Internet of Things and car networking, wherein, described audio decoder module comprises audio decoder chip, first resistance and second resistance; The ROUT2 port of described audio decoder chip is connected with power amplifier module by first resistance, and the LOUT2 port of audio decoder chip is connected with power amplifier module by second resistance.
The described high tone quality intelligent vehicle mounted terminal equipment that can be used for Internet of Things and car networking, wherein, described power amplifier module comprises power amplifier chip, second inductance, the 3rd inductance, first electric capacity, second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity and the 6th electric capacity; Described power amplifier chip+In B port is connected with the audio decoder module with first electric capacity by second inductance successively, and-In B port passes through the 3rd inductance successively and is connected with the audio decoder module with second electric capacity; The out A port of described power amplifier chip is connected with the left channel signals input of loudspeaker with the 4th electric capacity by the 3rd electric capacity successively, and the out B port of described power amplifier chip is connected with the right-channel signals input of loudspeaker with the 6th electric capacity by the 5th electric capacity successively.
The described high tone quality intelligent vehicle mounted terminal equipment that can be used for Internet of Things and car networking, wherein, it is the integrated chip of LM3478 that described switching power source chip adopts model.
The described high tone quality intelligent vehicle mounted terminal equipment that can be used for Internet of Things and car networking, wherein, it is the integrated chip of WM8978 that described audio decoder chip adopts model.
The described high tone quality intelligent vehicle mounted terminal equipment that can be used for Internet of Things and car networking, wherein, it is the integrated chip of LM4766 that described power amplifier chip adopts model.
A kind of high tone quality intelligent vehicle mounted terminal equipment that can be used for Internet of Things and car networking that the utility model provides, adopted the power amplifier module of boost module, audio decoder module and dual track, devices such as metal-oxide-semiconductor, voltage, diode in boost module, have been increased, make power circuit stabilize to power amplifier module stable driving voltage is provided, adopt the power amplifier module of dual track to make that the distortion of power amplifier is little, thereby improved the tonequality of intelligent vehicle mounted terminal equipment greatly.
A kind of high tone quality intelligent vehicle mounted terminal equipment that can be used for Internet of Things and car networking that the utility model provides has tonequality grace, the high characteristics of fidelity, has improved the competitiveness of product on market.
Description of drawings
The Facad structure schematic diagram of the intelligent vehicle mounted terminal equipment that Fig. 1 provides for the utility model embodiment.
The circuit structure block diagram of the intelligent vehicle mounted terminal equipment that Fig. 2 provides for the utility model embodiment.
The circuit theory diagrams of the intelligent vehicle mounted terminal equipment that Fig. 3 provides for the utility model embodiment.
Embodiment
The utility model provides a kind of intelligent vehicle mounted terminal equipment, and is clearer, clear and definite for making the purpose of this utility model, technical scheme and effect, below with reference to accompanying drawing and give an actual example the utility model is further described.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
The high tone quality intelligent vehicle mounted terminal equipment that the utility model embodiment provides can be used for the vehicle GPS intelligent scheduling of Internet of Things and car networking and automatic speech field such as call out the stops.See also Fig. 1 and Fig. 2, described intelligent vehicle mounted terminal equipment comprises intelligent vehicle mounted terminal apparatus body 11, is provided with boost module, audio decoder module, power amplifier module and loudspeaker in intelligent vehicle mounted terminal apparatus body 11.Described boost module, audio decoder module and loudspeaker are connected with power amplifier module respectively.
Wherein, described boost module is used for supply voltage is increased to audio frequency power amplifier module work required voltage, powers to power amplifier module.The audio decoder module is used for converting digital audio and video signals to simulated audio signal, and power amplifier module is used for simulated audio signal with audio-frequency module output and amplifies and output to loudspeaker, by the outside output sound of loudspeaker.
See also Fig. 3, described boost module comprises switching power source chip U1, metal-oxide-semiconductor Q1, first inductance L 1 and diode D1.Wherein, it is the integrated chip of LM3478 that described switching power source chip U1 adopts model, the VIN port of this switching power source chip U1 (being the 8th pin of switching power source chip U1) is connected with the anode of diode D1 by described first inductance L 1, and the negative electrode of diode D1 is connected with power amplifier module.The grid of described metal-oxide-semiconductor Q1 is connected with the DR port (being the 6th pin of switching power source chip U1) of switching power source chip U1, and drain electrode is connected source ground with the anode of diode D1.
In the present embodiment, described switching power source chip U1 is a speed-sensitive switch power supply chip, and the metal-oxide-semiconductor Q1 that itself and High speed and low resistance resist is combined into booster power supply circuit of the present utility model, for power amplifier module provides suitable voltage and current.During circuit working, power unit (part of promptly boosting) is realized boosting by metal-oxide-semiconductor Q1, first inductance L 1 and diode D1; When metal-oxide-semiconductor Q1 conducting, first inductance L, 1 storage power, when metal-oxide-semiconductor Q1 ends, first inductance L 1 induces the negative right positive voltage in a left side, this voltage is superimposed upon the voltage that forms 30V on the input voltage of 12V, to load (being power amplifier module) power supply, make output voltage through diode D1, form the booster switcher power supply greater than input voltage.
Please continue to consult Fig. 2 and Fig. 3, described audio decoder module comprises audio decoder chip U2, first resistance R 1 and second resistance R 2.Wherein, it is the integrated chip of WM8978 that described audio decoder chip U2 adopts model, the ROUT2 port of this audio decoder chip (being the 23rd pin of audio decoder chip) is connected with power amplifier module by first resistance R 1, and the LOUT2 port of this audio decoder chip (being the 25th pin of audio decoder chip) is connected with power amplifier module by second resistance R 2.
In the present embodiment, described audio decoder chip U2 mainly converts the digital audio and video signals of its input side to the module audio signal for the power amplifier module processing and amplifying.
Please consult Fig. 2 and Fig. 3 once more, described power amplifier module comprises power amplifier chip U3, second inductance L 2, the 3rd inductance L 3, first capacitor C 1, second capacitor C 2, the 3rd capacitor C 3, the 4th capacitor C 4, the 5th capacitor C 5 and the 6th capacitor C 6.
It is the integrated chip of LM4766 that described power amplifier chip U3 adopts model, this power amplifier chip U3+In B port is connected with first resistance R 1 in the audio decoder module by second inductance L 2 and first capacitor C 1 successively, power amplifier chip U3-In B port passes through the 3rd inductance L 3 and second capacitor C 2 successively and is connected with second resistance R 2 in the audio decoder module.The out A port of described power amplifier chip U3 is connected with the left channel signals input of loudspeaker with the 4th capacitor C 4 by the 3rd capacitor C 3 successively, and the out B port of described power amplifier chip U3 is connected with the right-channel signals input of loudspeaker with the 6th capacitor C 6 by the 5th capacitor C 5 successively.
In the present embodiment, model provides the supply voltage of 30V to drive its work for the power amplifier chip of LM4766 by boost module, and this power amplifier chip is the chip with dual track power amplification, and its audio distortion is less than 0.06%.When circuit working, amplify by the simulated audio signal of power amplifier chip the output of audio decoder chip, output to 4～8 Ω loudspeaker, thereby realize the high-power power amplifier control of single supply.
In a further embodiment, on high tone quality intelligent vehicle mounted terminal apparatus body 11, also be provided with a USB interface (not marking among the figure), the mainboard of this USB interface and high tone quality intelligent vehicle mounted terminal equipment electrically connects, thereby can play graceful music by reading the audio file of storing in the USB flash disk.
In sum, a kind of high tone quality intelligent vehicle mounted terminal equipment that can be used for Internet of Things and car networking that the utility model provides, adopted the power amplifier module of boost module, audio decoder module and dual track, devices such as metal-oxide-semiconductor, voltage, diode in boost module, have been increased, make power circuit stabilize to power amplifier module stable driving voltage is provided, adopt the power amplifier module of dual track to make that the distortion of power amplifier is little, thereby improved the tonequality of intelligent vehicle mounted terminal equipment greatly.
A kind of high tone quality intelligent vehicle mounted terminal equipment that can be used for Internet of Things and car networking that the utility model provides has tonequality grace, the high characteristics of fidelity, has improved the competitiveness of product on market.
Be understandable that; for those of ordinary skills; can be equal to replacement or change according to the technical solution of the utility model and utility model design thereof, and all these changes or replacement all should belong to the protection range of the appended claim of the utility model.
Claims (7)
1. high tone quality intelligent vehicle mounted terminal equipment that can be used for the networking of Internet of Things and car, it comprises the intelligent vehicle mounted terminal apparatus body, it is characterized in that, is provided with in described intelligent vehicle mounted terminal apparatus body:
Be used for voltage is increased to the boost module of audio frequency power amplifier module work required voltage;
Be used for digital audio and video signals is converted to the audio decoder module of simulated audio signal;
Be used for the power amplifier module that the simulated audio signal with audio-frequency module output amplifies;
The loudspeaker that are used for output sound;
Described boost module, audio decoder module and loudspeaker are connected with power amplifier module respectively.
2. the high tone quality intelligent vehicle mounted terminal equipment that can be used for Internet of Things and car networking according to claim 1 is characterized in that described boost module comprises switching power source chip, metal-oxide-semiconductor, first inductance L 1 and the diode; The VIN port of described switching power source chip is connected with the anode of diode by described first inductance L 1, and the negative electrode of diode is connected with power amplifier module; The grid of described metal-oxide-semiconductor is connected with the DR port of switching power source chip, and drain electrode is connected source ground with the anode of diode.
3. the high tone quality intelligent vehicle mounted terminal equipment that can be used for Internet of Things and car networking according to claim 1 is characterized in that described audio decoder module comprises audio decoder chip, first resistance and second resistance; The ROUT2 port of described audio decoder chip is connected with power amplifier module by first resistance, and the LOUT2 port of audio decoder chip is connected with power amplifier module by second resistance.
4. the high tone quality intelligent vehicle mounted terminal equipment that can be used for Internet of Things and car networking according to claim 1, it is characterized in that described power amplifier module comprises power amplifier chip, second inductance, the 3rd inductance, first electric capacity, second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity and the 6th electric capacity; Described power amplifier chip+In B port is connected with the audio decoder module with first electric capacity by second inductance successively, and-In B port passes through the 3rd inductance successively and is connected with the audio decoder module with second electric capacity; The out A port of described power amplifier chip is connected with the left channel signals input of loudspeaker with the 4th electric capacity by the 3rd electric capacity successively, and the out B port of described power amplifier chip is connected with the right-channel signals input of loudspeaker with the 6th electric capacity by the 5th electric capacity successively.
5. the high tone quality intelligent vehicle mounted terminal equipment that can be used for Internet of Things and car networking according to claim 2 is characterized in that it is the integrated chip of LM3478 that described switching power source chip adopts model.
6. the high tone quality intelligent vehicle mounted terminal equipment that can be used for Internet of Things and car networking according to claim 3 is characterized in that it is the integrated chip of WM8978 that described audio decoder chip adopts model.
7. the high tone quality intelligent vehicle mounted terminal equipment that can be used for Internet of Things and car networking according to claim 4 is characterized in that it is the integrated chip of LM4766 that described power amplifier chip adopts model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202033425U CN202095072U (en) | 2011-06-16 | 2011-06-16 | High-sound-quality intelligent vehicle-mounted terminal equipment capable of being used for Internet of Things and Internet of Vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202033425U CN202095072U (en) | 2011-06-16 | 2011-06-16 | High-sound-quality intelligent vehicle-mounted terminal equipment capable of being used for Internet of Things and Internet of Vehicles |
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| Publication Number | Publication Date |
|---|---|
| CN202095072U true CN202095072U (en) | 2011-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202033425U Expired - Fee Related CN202095072U (en) | 2011-06-16 | 2011-06-16 | High-sound-quality intelligent vehicle-mounted terminal equipment capable of being used for Internet of Things and Internet of Vehicles |
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| CN (1) | CN202095072U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102752009A (en) * | 2012-06-29 | 2012-10-24 | 惠州天缘电子有限公司 | Intelligent vehicle internet vehicle-mounted terminal based on fourth generation mobile communication technology |
-
2011
- 2011-06-16 CN CN2011202033425U patent/CN202095072U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102752009A (en) * | 2012-06-29 | 2012-10-24 | 惠州天缘电子有限公司 | Intelligent vehicle internet vehicle-mounted terminal based on fourth generation mobile communication technology |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111228 Termination date: 20130616 |