CN205545229U

CN205545229U - Novel digital frequency modulation radio

Info

Publication number: CN205545229U
Application number: CN201620328341.6U
Authority: CN
Inventors: 陶琴; 姚诗颖; 洪丹阳; 李鹏; 杨光义
Original assignee: Wuhan University WHU
Current assignee: Wuhan University WHU
Priority date: 2016-04-19
Filing date: 2016-04-19
Publication date: 2016-08-31
Anticipated expiration: 2026-04-19

Abstract

The utility model provides a novel digital frequency modulation radio, its characterized in that: including the main control module, peripheral hardware module, frequency modulation module, the enlarged module of audio power and power module, the main control module connects the frequency modulation module, and the frequency modulation module is connected audio power and is enlargied the module, and power module connects the main control module, frequency modulation module and audio power respectively and enlargies the module, the peripheral hardware module includes button, LCD, temperature sensor, serial ports level conversion ware, and the main control module is connected respectively to button, LCD, temperature sensor, serial ports level conversion ware. The utility model discloses simple structure implements to make things convenient for, provides support system software upgrade's interface, still has the characteristics of broadband, low -power consumption, low price, function abundance, stable performance simultaneously.

Description

A kind of new digital FM receiver

Technical field

This utility model relates to radio devices technical field, particularly to a kind of new digital FM receiver.

Background technology

FM receiver is used to receive the radio of frequency modulation broadcasting program, and high-fidelity radio and stereo receiver are all FM receiver.Frequency-modulatd high-frequency signal is demodulated by this radio descriminator, has capacity of resisting disturbance strong, and the feature that audio band is wide is therefore good than AM receiver.

Digital communication in recent years develops rapidly and promotes, and for the problem that analog tuner formula radio is not good enough in radio reception effect, digital FM radio receiver is used widely.Along with the development of science and technology, the requirement of hardware equipment function is constantly promoted by people, buys wireless function limited, it is impossible to meet people in future to more multi-functional demand.

Utility model content

The purpose of this utility model is the shortcoming simple, not upgradeable for radio function on Vehicles Collected from Market, it is provided that a kind of new digital FM receiver.

The technical solution of the utility model is a kind of new digital FM receiver, including main control module, peripheral module, FM module, audio power amplification module and power module, main control module connects FM module, FM module connects audio power amplification module, and power module connects main control module, FM module and audio power amplification module respectively；Peripheral module includes button, liquid crystal display, temperature sensor, serial port level changer, and button, liquid crystal display, temperature sensor, serial port level changer connect main control module respectively.

And, main control module uses single-chip microcomputer STC89C52, keyboard, temperature sensor, instruction input the single-chip microcomputer STC89C52, single-chip microcomputer STC89C52 of serial port level changer to export FM module and the control command of liquid crystal display.

And, FM module uses RDA5807SP chip.

And, voice signal power amplifier module uses TS4963 chip, two potentiometers regulating left and right acoustic channels respectively in parallel before TS4962 chip.

And, the input power of power module is+7.4V lithium battery or+9V/+12V power supply adaptor.

And, the program of system upgrade is through the serial ports of serial port level changer input main control module.

This utility model simple in construction, it is convenient to implement, the interface supporting system software upgrading is provided, uses the new digital FM radio function that the utility model proposes to solve problem of the prior art very well, the most also there is the feature of broadband, low-power consumption, low price, feature richness, stable performance.

Accompanying drawing explanation

Fig. 1 is the system construction drawing of this utility model embodiment.

Fig. 2 is the power module structure figure of this utility model embodiment.

Detailed description of the invention

Below in conjunction with embodiment and accompanying drawing, the technical solution of the utility model is described in further detail.

See Fig. 1, a kind of frequency-shift keying radio that this utility model provides, including main control module, peripheral module, FM module, audio power amplification module, power module, main control module connects FM module, FM module connects audio power amplification module, and power module connects main control module, FM module and audio power amplification module respectively.Peripheral module includes button, liquid crystal display, temperature sensor, serial port level changer, and button, liquid crystal display, temperature sensor, serial port level changer connect main control module respectively.

Main control module selects single-chip microcomputer STC89C52, and it is strong that it has performance, feature low in energy consumption.Keyboard, temperature sensor, instruction input the single-chip microcomputer STC89C52, single-chip microcomputer STC89C52 of serial port level changer export FM module and the control command of liquid crystal display, and concrete control realization can use prior art.

FM module select RDA company RDA5807SP radio chip, this chip compatibility 76-108MHz whole world FM frequency range, can to antenna coupling come acoustical signal be mixed, frequency discrimination, power amplification operation, obtain voice signal.The RDA5807SP chip of single-chip microcomputer STC89C52 and FM module is connected by I2C bus.

Voice signal power amplifier module selects amplifier TS4962, and this amplifier is dual input, dual output stereo audio power amplifier.In voice signal power amplifier module, before amplifier TS4962, two potentiometers in parallel, can regulate left and right acoustic channels respectively.

Peripheral module includes button, liquid crystal display, temperature sensor and serial port level changer.The input of button instructs single-chip microcomputer STC89C52, by I2C bus, the control depositor of the RDA5807SP chip of FM module is written and read operation, to realize the selection of the manually or automatically frequency modulation to this new digital FM receiver.Liquid crystal display is driven by main control module single-chip microcomputer STC89C52, shows Current Temperatures, channel information.Temperature sensor uses DS18B20, and this temperature sensor gathers current room temperature, the incoming main control module of digital signal.The signal of PC is carried out level conversion by serial port level changer, is connected to the serial ports of main control module, by download program to main control module when being used for supporting using, thus realizes system software upgrading.

Seeing Fig. 2, in power module, therefore input power can be selected for lithium battery or power supply adaptor as external power supply in the range of 7.4-12v.In the power module of embodiment, 7.4-12v input power is sequentially connected with switch, resettable fuse mSMD150-12V, overvoltage crowbar and voltage stabilizing chip LT1086IT-5, obtains+5V voltage stabilizing output, it is provided that use to system.

Visible, when being embodied as, the new digital FM receiver using this utility model to provide, manually and automatically frequency modulation, display Current Temperatures, regulation left and right acoustic channels output volume can be supported, support that+7.4V lithium battery and+9V/+12V power supply adaptor are powered simultaneously.

When being embodied as, those skilled in the art utilize the provided device product of this utility model that prior art can be utilized voluntarily to arrange realization, and this utility model only provides and requires the improvement project of hardware aspect.

It should be noted that the present embodiment is only a part of embodiment of the present utility model rather than whole embodiment.Essence spirit based on the present embodiment, other embodiments that those of ordinary skill in the art is drawn on the premise of not making creative work, broadly fall into protection domain of the present utility model.

Claims

1. a new digital FM receiver, it is characterised in that: include main control module, peripheral module, FM module, audio frequency Power amplifier module and power module, main control module connects FM module, and FM module connects audio power amplification module, electricity Source module connects main control module, FM module and audio power amplification module respectively；Peripheral module includes button, liquid crystal display Device, temperature sensor, serial port level changer, button, liquid crystal display, temperature sensor, serial port level changer are respectively Connect main control module.

A kind of new digital FM receiver the most according to claim 1, it is characterised in that: main control module uses single-chip microcomputer STC89C52, keyboard, temperature sensor, the instruction input single-chip microcomputer STC89C52 of serial port level changer, single-chip microcomputer STC89C52 exports FM module and the control command of liquid crystal display.

A kind of new digital FM receiver the most according to claim 1, it is characterised in that: FM module uses RDA5807SP chip.

A kind of new digital FM receiver the most according to claim 1, it is characterised in that: voice signal power amplifier module Use TS4963 chip, two potentiometers regulating left and right acoustic channels respectively in parallel before TS4962 chip.

A kind of new digital FM receiver the most according to claim 1, it is characterised in that: the input power of power module is + 7.4V lithium battery or+9V/+12V power supply adaptor.

6. according to a kind of new digital FM receiver described in claim 1 or 2 or 3 or 4 or 5, it is characterised in that: system The program of upgrading is through the serial ports of serial port level changer input main control module.