Vehicle-mounted radio control system

Abstract

The invention relates to a vehicle-mounted radio control system. The vehicle-mounted radio control system comprises an audio amplification module, a radio control system and a frequency synthesizer; the audio amplification module comprises a stereo decoder, a digitally controlled potentiometer and a power amplifier; a radio control module comprises a CXA1019 chip and a radio station latching module; the frequency synthesizer comprises a first phase-locked loop having a BU2614 as the core; the radio module is connected with the single chip microcomputer of the vehicle-mounted control system; the single chip microcomputer is electrically connected with an LED function selection and display module; and the single chip microcomputer is connected with a radio through the first phase-locked loop. The vehicle-mounted radio control system provided by the invention can precisely lock and latch radio stations; the sensitivity is high; the noise is reduced; the anti-interference performance is improved; and the listening experience of users is improved.

Description

technical field [0001] The technical field of the vehicle accessories of the present invention particularly relates to a vehicle radio control system. Background technique [0002] At present, with the development of automotive electronics technology, the vehicle-mounted central control system has been widely used in vehicles. The radio and electronic modules in the vehicle form a complete system. The function of the car radio is to convert the received high-frequency signal into an audio signal, and then play the audio signal through the speaker to meet the basic requirements of the user to listen to the audio station. Since the vehicle is in a public place during the movement, even sometimes in the garage, underground, or suburban areas, it is easily affected by various noises, thereby affecting the quality of the user's listening to the radio broadcast, and sometimes even wrongly recording the interference signal as an effective The radio station is not conducive to the ...

AI Technical Summary

Problems solved by technology

Since the vehicle is in a public place during the movement, even sometimes in the garage, underground, or suburban areas, it is easily affected by various noises, thereby affecting the quality of the user's listening to the radio broadcast, and sometimes even wrongly recording the interference signal as an effective The radio station is not conducive to the user's effective listening and reduces the listening efficiency

The existing technology uses increasing the volume of the radio, or attenuating high-frequency audio to reduce interference, but these processing methods will cause loss of sound information, poor clarity, dull sound, and poor noise reduction effect

[0003] At the same time, the car radio has the function of locking the radio station, and the search efficiency of the existing car radio is poor. Usually, the station search is realized through the judgment and identification of the output signal change; It may last for a few seconds or even tens of seconds; at the same time, when switching frequencies, users will obviously feel the sound or pause during channel switching

Aiming at the no-station phenomenon of the radio when the car owner crosses the region, it is often necessary to manually search for and lock the station. inconvenient

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