CN201341139Y - Wireless audio-transmitting device for vehicle system - Google Patents
Wireless audio-transmitting device for vehicle system Download PDFInfo
- Publication number
- CN201341139Y CN201341139Y CNU2008201700792U CN200820170079U CN201341139Y CN 201341139 Y CN201341139 Y CN 201341139Y CN U2008201700792 U CNU2008201700792 U CN U2008201700792U CN 200820170079 U CN200820170079 U CN 200820170079U CN 201341139 Y CN201341139 Y CN 201341139Y
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- CN
- China
- Prior art keywords
- audio
- antenn audio
- wireless audio
- vehicle
- transmitter module
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a wireless audio-transmitting device for a vehicle system, comprising a wireless audio-transmitting module, a single chip for controlling the modulating frequency of the wireless audio-transmitting module and a power supply module, wherein the single chip is connected with the wireless audio-transmitting module by a serial interface; and the wireless audio-transmitting module transforms various wired audio signals into wireless signals and sends the wireless signals to a vehicle radio. The wireless audio-transmitting device sends sound with high quality made by portable audio-visual play equipment to the vehicle radio in an FM mode and then to professional sound equipment arranged on a vehicle, thereby improving the entertainment performance of the vehicle system.
Description
Technical field
The utility model relates to a kind of ANTENN AUDIO emitter, specifically is a kind of ANTENN AUDIO emitter that is used for onboard system.
Background technology
Along with the raising of rapid development of economy and people's living standard, automobile has been come into the huge numbers of families of China.On the other hand, increasing driver and crew wish can be in uninteresting route process can amusement once, such as listening to the music, see a film etc.Except traditional vehicle-mounted CD, outside the audio-visual playback equipment such as VCD, capacity is bigger, carry MP3 more easily, audio-visual playback equipment such as MP4 more and more is subjected to people's welcome, in addition, also integrated audio-video playing function in some car borne GPS navigation devices, but these portable equipments often its loud speaker tonequality lack perfection, can't satisfy the especially requirement of those Fanciers of some people, if can utilize mounted vehicle-mounted radio in the car, the audio frequency of portable audio-visual playback equipment is gone out by the FM wireless transmission, by vehicle-mounted radio accept that these audio-visual devices send stereo, give existing professional sound equipment on the car again, so just can improve the recreational of onboard system greatly.
Summary of the invention
The utility model provides a kind of ANTENN AUDIO emitter that is used for onboard system, the high-quality sound that portable audio-visual playback equipment sent is sent in the vehicle-mounted radio by the FM mode, be sent to the professional stereo set of installing on the car again, thereby improve the amusement performance of onboard system.
ANTENN AUDIO emitter of the present utility model comprises the audio frequency receiving interface, connects the ANTENN AUDIO transmitter module of this interface, the single-chip microcomputer and the power module of control wireless transmitter module modulating frequency, and single-chip microcomputer connects the ANTENN AUDIO transmitter module by serial line interface.The ANTENN AUDIO transmitter module is that wireless signal sends to vehicle-mounted radio with various wireline audio conversion of signals.
Described ANTENN AUDIO transmitter module comprises f-m stereo acoustic transmitter, crystal oscillator, filter circuit and antenna.
Described power module comprises DC/DC converter and low pressure difference linear voltage regulator, is to export to ANTENN AUDIO transmitter module and single-chip microcomputer behind the 3.3V with the 12V voltage transformation of vehicle power.
Described f-m stereo acoustic transmitter is the RS300A chip, and the frequency of described crystal oscillator is 19MHZ.
The utility model has the advantages that: simple in structure, easy to use, the audio signal of various portable equipments can be play by vehicle-mounted audio amplifier, improved the utilization ratio and the amusement performance of equipment.
Description of drawings
Fig. 1 is the module diagram of ANTENN AUDIO emitter of the present utility model.
Embodiment
As shown in Figure 1, ANTENN AUDIO emitter of the present utility model comprises the single-chip microcomputer 2 and the power module 3 of ANTENN AUDIO transmitter module 1, control ANTENN AUDIO transmitter module 1 modulating frequency, and single-chip microcomputer 2 connects ANTENN AUDIO transmitter module 1 by serial line interface.ANTENN AUDIO transmitter module 1 is that wireless signal sends to vehicle-mounted receipts unit by antenna 4 with various wireline audio conversion of signals.
Single-chip microcomputer 2 is provided with the FM modulating frequency of ANTENN AUDIO transmitter module 1 by serial line interface, ANTENN AUDIO transmitter module 1 will carry out FM modulation back by the simulated audio signal of audio frequency receiving interface 8 inputs and send in the air by antenna 4, be beneficial to vehicle-mounted FM receiver and receive.Power module 3 is powered vehicle-mounted standard 12V voltage step-down behind 3.3V to ANTENN AUDIO transmitter module 1 and single-chip microcomputer 2.
Described ANTENN AUDIO transmitter module 1 comprises f-m stereo acoustic transmitter 5, crystal oscillator 6, filter circuit 7 and antenna 4.F-m stereo acoustic transmitter 5 adopts the RS300A chip of Korea S Ramsway company, and the RS300A chip is finished the FM modulation work to input audio signal.The frequency of oscillation of crystal oscillator 6 is 19MHZ, for RS 300A chip provides local oscillations.7 of filter circuits are finished the filtering work of RS300A chip respective pin, and 4 on antenna is launched the FM signal that modulates.
Claims (4)
1, a kind of ANTENN AUDIO emitter that is used for onboard system, it is characterized in that: comprise the audio frequency receiving interface, connect the ANTENN AUDIO transmitter module of this interface, the single-chip microcomputer and the power module of control wireless transmitter module modulating frequency, single-chip microcomputer connects the ANTENN AUDIO transmitter module by serial line interface.
2, ANTENN AUDIO emitter according to claim 1 is characterized in that: described ANTENN AUDIO transmitter module comprises f-m stereo acoustic transmitter, crystal oscillator, filter circuit and antenna.
3, ANTENN AUDIO emitter according to claim 2, it is characterized in that: described power module comprises DC/DC converter and low pressure difference linear voltage regulator.
4, ANTENN AUDIO emitter according to claim 3 is characterized in that: described f-m stereo acoustic transmitter is the RS300A chip, and the frequency of described crystal oscillator is 19MHZ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201700792U CN201341139Y (en) | 2008-12-18 | 2008-12-18 | Wireless audio-transmitting device for vehicle system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201700792U CN201341139Y (en) | 2008-12-18 | 2008-12-18 | Wireless audio-transmitting device for vehicle system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201341139Y true CN201341139Y (en) | 2009-11-04 |
Family
ID=41236683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201700792U Expired - Fee Related CN201341139Y (en) | 2008-12-18 | 2008-12-18 | Wireless audio-transmitting device for vehicle system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201341139Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102207520A (en) * | 2011-03-31 | 2011-10-05 | 华立仪表集团股份有限公司 | Electrical metering system for electrical vehicle and metering method thereof |
| CN105898674A (en) * | 2015-10-21 | 2016-08-24 | 乐卡汽车智能科技（北京）有限公司 | Processing device, vehicle-mounted system and audio frequency data processing method |
-
2008
- 2008-12-18 CN CNU2008201700792U patent/CN201341139Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102207520A (en) * | 2011-03-31 | 2011-10-05 | 华立仪表集团股份有限公司 | Electrical metering system for electrical vehicle and metering method thereof |
| CN105898674A (en) * | 2015-10-21 | 2016-08-24 | 乐卡汽车智能科技（北京）有限公司 | Processing device, vehicle-mounted system and audio frequency data processing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20091104 Termination date: 20131218 |