CN210246747U - Automobile navigation box audio transmission system based on frequency modulation technology - Google Patents
Automobile navigation box audio transmission system based on frequency modulation technology Download PDFInfo
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- CN210246747U CN210246747U CN201921980496.8U CN201921980496U CN210246747U CN 210246747 U CN210246747 U CN 210246747U CN 201921980496 U CN201921980496 U CN 201921980496U CN 210246747 U CN210246747 U CN 210246747U
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Abstract
The utility model discloses a car navigation box audio transmission system based on frequency modulation technology, which comprises an audio receiving module and an audio transmitting module, wherein the audio transmitting module comprises an FM audio collecting module, an FM audio coding module, an FM data storage module and a wireless transmitting module, the audio receiving module comprises an FM audio playing module, an FM audio storage module, an FM audio decoding module and a wireless receiving module, the FM audio collecting module consisting of an audio signal source, a pre-filter and a converter is better when transmitting audio signals, internal signals can be well collected through the audio signal source, unnecessary audio is filtered out through the pre-filter, the transmission quality of the audio signals is improved to a certain extent when in use, the speed of the external part receiving the audio signals is faster, the audio signals are converted into the transmitted audio signals through the converter, thus, the audio signal is transmitted more quickly when the audio signal is transmitted.
Description
Technical Field
The utility model belongs to the technical field of relevant car navigation box audio transmission system, concretely relates to car navigation box audio transmission system based on frequency modulation technique.
Background
At present, an original car screen upgrading navigation box in a car is basically provided with a low-power loudspeaker, the power is low, the tone quality is poor, and meanwhile, audio in the original car screen upgrading navigation box cannot be transmitted to other modules. With the development of embedded technology and network technology in recent years, audio communication has been widely applied, and with the continuous improvement of living standard of people, the requirement for the real-time performance of music is higher and higher. Nowadays, most of audio is transmitted through a wire, and the wire transmission not only affects security but also is limited by a place, so bluetooth transmission, WiFi transmission, infrared transmission, and the like have appeared.
The prior audio transmission system technology of the automobile navigation box has the following problems: the practicability of the existing audio transmission system of the automobile navigation box is not good, the quality and the speed of audio transmission are not good, and the equipment cost needs to be increased if the quality and the speed need to be increased, so that the transmission cost is increased to a certain extent.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a car navigation box audio transmission system based on frequency modulation technique to the practicality of solving the current car navigation box audio transmission system who proposes in the above-mentioned background art is not fine, and in audio transmission, audio transmission's quality and speed are not fine problem.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a car navigation box audio transmission system based on frequency modulation technique, includes audio frequency receiving module and audio frequency transmitting module, audio frequency transmitting module includes FM audio acquisition module, FM audio coding module, FM data storage module and wireless transmitting module, audio frequency receiving module includes FM audio playback module, FM audio storage module, FM audio decoding module and wireless receiving module, car navigation box audio transmission system still includes navigation module, MCU treater, power module and bluetooth module.
Preferably, the FM audio acquisition module includes an audio signal source, a pre-filter and a converter, the audio signal source is connected to the pre-filter, the pre-filter is connected to the converter, and the pre-filter and the converter are respectively connected to the MCU processor.
Preferably, the wireless receiving module includes an audio collector, an audio processor and a frequency converter, the audio collector is connected to the audio processor, and the audio processor is connected to the frequency converter.
Preferably, the bluetooth module is used for wireless communication service, and the MCU processor is used for controlling signal transmission and set processing.
Preferably, the audio receiving module and the audio transmitting module are connected through a wireless signal channel.
Preferably, the MCU processor is an MCS-51 singlechip.
Preferably, the wireless transmitting module comprises an audio amplifier, a modulator and a carrier oscillator, and the audio amplifier and the carrier oscillator are both connected with the modulator.
Preferably, the power supply module is connected with the external 13.5V-14.5V.
Compared with the prior art, the utility model provides a car navigation box audio transmission system based on frequency modulation technique possesses following beneficial effect:
the utility model discloses car navigation box audio transmission system based on frequency modulation technique passes through audio signal source, the FM audio acquisition module that prefilter and converter are constituteed is better when transmitting audio signal, when using, through the inside signal of collection that audio signal source can be fine, and filter out unnecessary audio frequency through the prefilter, thereby make audio signal transmission quality obtain certain improvement when using, make the outside speed of accepting audio signal processing faster, be converted into the audio signal who launches through the converter like this, when transmitting audio signal like this, make audio signal transmission more swift.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description, do not constitute a limitation of the invention, in which:
fig. 1 is the utility model provides a car navigation box audio transmission system schematic diagram based on frequency modulation technique.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution:
the utility model provides a car navigation box audio transmission system based on frequency modulation technique, including audio frequency receiving module and audio frequency transmitting module, audio frequency transmitting module includes FM audio acquisition module, FM audio encoding module, FM data storage module and wireless transmitting module, audio frequency receiving module includes FM audio playback module, FM audio frequency storage module, FM audio decoding module and wireless receiving module, car navigation box audio transmission system still includes navigation module, MCU treater, power module and bluetooth module.
Further, FM audio acquisition module includes audio signal source, prefilter and converter, audio signal source connects the prefilter, the prefilter connects the converter, the MCU treater is connected respectively to prefilter and converter, when using, through the inside signal of collection that audio signal source can be fine, and filter out unnecessary audio through the prefilter, thereby make audio signal transmission quality obtain certain improvement when using, make the outside speed of accepting audio signal processing faster, be converted into the audio signal who launches through the converter like this, when transmitting audio signal like this, make audio signal transmission more swift.
Further, wireless receiving module includes the audio collector, audio processor and converter, and the audio collector connects the audio processor, and the converter is connected to the audio processor, and when accepting outside signal, through the collection outside audio signal that the audio collector can be fine, and the audio signal of collection carries out fast processing and transmission through the audio processor, and the audio signal at the transmission carries out audio signal's change through the converter to it is more convenient when making the post processing broadcast.
Furthermore, the Bluetooth module is used for wireless communication service, the MCU processor is used for controlling signal transmission and set processing, so that the Bluetooth module is more convenient to use, and the MCU processor is used for controlling signal transmission and set processing, so that the Bluetooth module is more convenient to process signals.
Furthermore, the audio receiving module and the audio transmitting module are connected through a wireless signal channel, so that transmission of internal signals can be well received when the mobile phone is used, and the mobile phone is more convenient to use.
Furthermore, the MCU processor is an MCS-51 single chip microcomputer, so that audio processing and control can be effectively carried out, and the use is more efficient.
Further, wireless transmitting module includes audio amplifier, modulator, and carrier oscillator, and audio amplifier and carrier oscillator all connect the modulator, and like this when transmitting signal, carry out the amplification of signal through audio amplifier for audio signal transmission is farther, and audio amplifier and carrier oscillator all connect the modulator, and like this when signal transmission, signal transmission quality is higher.
Further, the power supply module is connected with the external 13.5V-14.5V, so that the automobile is more convenient to use when being connected and the use is more convenient.
The utility model discloses a theory of operation and use flow: the utility model discloses after having installed, just can use. When in use, the automobile navigation box is arranged at a designated position, so that the power supply module is connected with an automobile variable voltage power supply. When the automobile navigation box audio transmission system based on the frequency modulation technology is used, an external signal can be effectively received through the internal navigation module, so that the external signal is processed through the internal MCU processor, the use is more accurate, the internal Bluetooth module is used for wireless communication service, and the automobile navigation box audio transmission system can be well connected with external equipment for use. When the automobile navigation box audio transmission system is used, the audio receiving module and the audio transmitting module of the automobile navigation box audio transmission system based on the frequency modulation technology are connected through a wireless signal channel, so that transmission of internal signals can be well received when the automobile navigation box audio transmission system is used, the automobile navigation box audio transmission system is more convenient to use, the audio transmitting module is formed by an FM audio collecting module, an FM audio coding module, an FM data storage module and a wireless transmitting module, and the audio receiving module is formed by an FM audio playing module, an FM audio storage module, an FM audio decoding module and a wireless receiving module. And car navigation box audio transmission system based on frequency modulation technique passes through audio signal source, the FM audio acquisition module that prefilter and converter are constituteed is when using, through the inside signal of collection that audio signal source can be fine, and filter out unnecessary audio frequency through the prefilter, thereby make audio signal transmission quality obtain certain improvement when using, make the outside speed of accepting audio signal processing faster, be converted into the audio signal who transmits through the converter like this, when transmitting audio signal through wireless transmitting module, make audio signal transmission more swift like this. The wireless transmitting module is composed of an audio amplifier, a modulator and a carrier oscillator, so that when a signal is transmitted, the audio amplifier is used for amplifying the signal, the audio signal is further transmitted, and the audio amplifier and the carrier oscillator are both connected with the modulator, so that when the signal is transmitted, the signal transmission quality is higher.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a car navigation box audio transmission system based on frequency modulation technique, includes audio frequency receiving module and audio frequency emission module, its characterized in that: the audio frequency transmitting module comprises an FM audio frequency collecting module, an FM audio frequency coding module, an FM data storage module and a wireless transmitting module, the audio frequency receiving module comprises an FM audio frequency playing module, an FM audio frequency storage module, an FM audio frequency decoding module and a wireless receiving module, and the automobile navigation box audio frequency transmission system further comprises a navigation module, an MCU processor, a power module and a Bluetooth module.
2. The audio transmission system of car navigation box based on frequency modulation technology as claimed in claim 1, wherein: the FM audio acquisition module comprises an audio signal source, a pre-filter and a converter, wherein the audio signal source is connected with the pre-filter, the pre-filter is connected with the converter, and the pre-filter and the converter are respectively connected with the MCU processor.
3. The audio transmission system of car navigation box based on frequency modulation technology as claimed in claim 1, wherein: the wireless receiving module comprises an audio collector, an audio processor and a frequency converter, wherein the audio collector is connected with the audio processor, and the audio processor is connected with the frequency converter.
4. The audio transmission system of car navigation box based on frequency modulation technology as claimed in claim 1, wherein: the Bluetooth module is used for wireless communication service, and the MCU processor is used for controlling signal transmission and set processing.
5. The audio transmission system of car navigation box based on frequency modulation technology as claimed in claim 1, wherein: the audio receiving module and the audio transmitting module are connected through a wireless signal channel.
6. The audio transmission system of car navigation box based on frequency modulation technology as claimed in claim 1, wherein: the MCU processor is an MCS-51 singlechip.
7. The audio transmission system of car navigation box based on frequency modulation technology as claimed in claim 1, wherein: the wireless transmitting module comprises an audio amplifier, a modulator and a carrier oscillator, wherein the audio amplifier and the carrier oscillator are connected with the modulator.
8. The audio transmission system of car navigation box based on frequency modulation technology as claimed in claim 1, wherein: the power supply module is connected with the external 13.5V-14.5V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921980496.8U CN210246747U (en) | 2019-11-16 | 2019-11-16 | Automobile navigation box audio transmission system based on frequency modulation technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921980496.8U CN210246747U (en) | 2019-11-16 | 2019-11-16 | Automobile navigation box audio transmission system based on frequency modulation technology |
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| Publication Number | Publication Date |
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| CN210246747U true CN210246747U (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921980496.8U Active CN210246747U (en) | 2019-11-16 | 2019-11-16 | Automobile navigation box audio transmission system based on frequency modulation technology |
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| Country | Link |
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| CN (1) | CN210246747U (en) |
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2019
- 2019-11-16 CN CN201921980496.8U patent/CN210246747U/en active Active
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