CN206332678U - A kind of ethernet receiver of multichannel FM broadcast - Google Patents

Abstract

The utility model discloses a kind of ethernet receiver of multichannel FM broadcast, communication module is received including N number of FM, N number of FM receives communication module by being connected after A/D modular converters with single-chip microcomputer, single-chip microcomputer is connected further through SPI communication with ethernet control chip, ethernet control chip is connected to human-computer interaction terminal by ICP/IP protocol, FM receives communication module, single-chip microcomputer, ethernet control chip is also associated with power module, it is RDA5820 chips that FM, which receives communication module, including 32.768KHz crystal oscillators, the I2C interfaces that FM receives communication module are connected with the I/O of the single-chip microcomputer, the FXOUT interfaces that FM receives communication module are connected with A/D modular converters, the utility model solves broadcast system present in prior art can not be while the problem of playing different content in the same time.

Description

A kind of ethernet receiver of multichannel FM broadcast

Technical field

The utility model belongs to the interleaving techniques field of radio communication and ethernet communication, and in particular to a kind of multichannel FM is wide The ethernet receiver broadcast.

Background technology

Wired broadcasting China development course nearly 50 years, although renewal of the equipment is after several times such as：Sound amplifier From electron tube to transistor, loudspeaker is from piezoelectric loudspeaker to armature loudspeaker, moving-coil loudspeaker etc.；Although all these all promote Enter the development of broadcasting industry, but these improved should say all are nonessential, because it is former without fundamentally change Some broadcast operational modes.Using dumb, not convenient.With developing rapidly for modern science and technology and information, also greatly promote and Drive the fast development of various transmission medias, and this present situation of existing broadcast system, it is clear that it far can not meet and work as Modern the needs of the times.For example：In modern teaching system, each grade different professional trainings, (listening English) are broadcast notice, opened On-the-spot meeting etc., is often required that in same instructional blocks of time while play the different contents of courses, and present broadcast system is then This is seemed helpless, this will undoubtedly limit the application of broadcast significantly.Carry out strict power and impedance matching Calculate, transmission line still uses aerial line mode, by demand of technical standard：A generaI investigation is needed every year, checked comprehensively within 3 years one, but by Field is chronically exposed in loudspeaker, audio-frequency transformer etc., causes directly to damage enlarger so still occurring short circuit etc. unavoidably Export the failure of power amplifier part etc..

And frequency modulation broadcasting uses the method that frequency modulation is modulated, audio signal is carried on high frequency carrier and carries out audio signal Transmission, is changed with the frequency change description audio signal of high frequency carrier.Different carrier frequencies can carry different sounds simultaneously 87-108MHz is divided into frequency modulation broadcasting frequency range by frequency program, China.Closed in China city broadcast at this stage, cable TV network Broadcast all by the way of FM frequency modulation broadcastings on road.It is the main development direction that China extends broadcast coverage rate from now on.Wireless frequency modulation Transmission means：Its advantage is that construction is simple, broadcasted simultaneously without wiring, cheap, achievable multichannel.

Utility model content

The purpose of this utility model is to provide a kind of ethernet receiver of multichannel FM broadcast, solves and deposits in the prior art Broadcast system the same time can not play different content simultaneously the problem of.

The technical scheme that the utility model is used is that a kind of ethernet receiver of multichannel FM broadcast, including N number of FM connect Communication module is received, N number of FM receives communication module by being connected after A/D modular converters with single-chip microcomputer, and single-chip microcomputer is logical further through SPI Letter is connected with ethernet control chip, and ethernet control chip is connected to human-computer interaction terminal by ICP/IP protocol, and FM is received Communication module, single-chip microcomputer, ethernet control chip are also associated with power module.

The characteristics of the utility model, also resides in,

FM receives communication module for RDA5820 chips, including 32.768KHz crystal oscillators, and FM receives the I2C interfaces of communication module It is connected with the I/O of the single-chip microcomputer, the FXOUT interfaces that FM receives communication module are connected with A/D modular converters.

Single-chip microcomputer is C8051F340 single-chip microcomputers.

Ethernet control chip model CH395.

The quantity that FM receives communication module is up to 6.

The beneficial effects of the utility model are that a kind of ethernet receiver of multichannel FM broadcast passes through general purpose I/O port mould Intend the drawbacks of I2C solves single-chip microcomputer C8051F340 Master control chips original only one of which I2C interfaces, realize the letter of 6 tunnels broadcast Number input is acquired, and realizes 6 circuit-switched data acquisition channels, and TCP/IP is used in single-chip microcomputer and ethernet module data transfer Agreement carries out network data transmission, can ensure that message transmission rate is fast using ICP/IP protocol, reliability is high, and TCP/IP Agreement independent of any specific computer hardware or operating system there is provided open consensus standard, even if not considering Internet, ICP/IP protocol also obtain extensive support, use Ethernet chip, make common broadcast radiated and ether Net, which integrates with, more adapts to the demand in epoch, and broadcast is merged with network, using internet broadcast message digitizing technique with At high speed, the new and high technology such as Fibre Optical Communication Technology and interaction technique of high power capacity, can overcome the weakness of traditional broadcast, across when Empty limitation, greatly expands spread scope, changes the mode propagated, a brand-new road is provided for the development of broadcast.

Brief description of the drawings

Fig. 1 is a kind of structural representation of the ethernet receiver of multichannel FM broadcast of the utility model.

In figure, 1.FM receives communication module, 2. single-chip microcomputers, 3. power modules, 4. ethernet control chips, 5. man-machine interactions Terminal, 6.A/D modular converters.

Embodiment

The utility model is described in detail with reference to the accompanying drawings and detailed description.

A kind of ethernet receiver of multichannel FM broadcast of the utility model, structure including N number of FM as shown in figure 1, receive logical Believe module 1, N number of FM receives communication module 1 by being connected after A/D modular converters 6 with single-chip microcomputer 2, and single-chip microcomputer 2 is further through SPI Communication is connected with ethernet control chip 4, and ethernet control chip 4 is connected to human-computer interaction terminal 5, FM by ICP/IP protocol Receive communication module 1, single-chip microcomputer 2, ethernet control chip 4 and be also associated with power module 3, wherein, FM receives communication module 1 For RDA5820 chips, including 32.768KHz crystal oscillators, the I2C interfaces that FM receives communication module 1 are connected with the I/O of single-chip microcomputer 2, FM The FXOUT interfaces for receiving communication module 1 are connected with A/D modular converters 6, and single-chip microcomputer 2 is C8051F340 single-chip microcomputers, ether network control The model CH395 of coremaking piece 4, the quantity that FM receives communication module 1 is up to 6.

A kind of ethernet receiver of multichannel FM broadcast of the utility model, using C8051F340 single chip control modules certainly The AD of band replaces common A/D chip, can both realize the collection to 6 tunnel analog broadcasting voice signals, high speed SPI can be provided again and is connect Mouthful, programming is convenient；Human-computer interaction terminal includes model selection (while selection (most six channels) of several channels), broadcast frequency The selection in road, switching on and shutting down, volume.C8051F340 single-chip microcomputers include setting broadcast module pattern by the I2C interfaces simulated Put, RDA5820 supports 2 kinds of communication patterns, SPI and IIC, MODE pin meet GND, and RDA5820 enters I2C patterns, now SCLK I2C SCL is served as, SDIO serves as I2C SDA.By setting CHIP_FUNC [3:0] it is=0 that definable current operation mode is FM reception patterns.In this mode, we are that FM radio functions can be achieved.By setting CHIP_FUNC [3:0]=1 Definition current operation mode is FM sending modes, in this mode, and we are the function that FM radio station can be achieved.Power module 3 leads to Crossing computer USB interface, it is powered to one-chip computer module, and then other modules are also powered by wire.Power module 3 and ethernet control chip 4 include the data that transmit single-chip microcomputer 2 and host computer, CH395 be transferred to by ICP/IP protocol Ethernet protocol chip is 200KB/s or so with the C8051F340 single-chip microcomputers speed that Ethernet data is transmitted under Single-Input Single-Output, For the reliability of experiment, and we broadcast be divided into upload and under pass two parts, so can only MAXIMUM SELECTION by accurate calculate Six RDA5820FM broadcast modules, so while can ensure that data transfer is accurate, it is ensured that the maximization of data transfer.

A kind of ethernet receiver of multichannel FM broadcast of the utility model, can conveniently realize the different network users simultaneously Different broadcasting channels are received, while parameter setting can be carried out., can be with when user need not receive so multichannel From few broadcast module, resource can be so saved, while realizing same machine adapts to different broadcast recipients Different receive channels.

Claims (4)

1. a kind of ethernet receiver of multichannel FM broadcast, it is characterised in that receive communication module (1), N number of FM including N number of FM Communication module (1) is received be connected with single-chip microcomputer (2) afterwards by A/D modular converters (6), single-chip microcomputer (2) further through SPI communication and Ethernet control chip (4) is connected, and ethernet control chip (4) is connected to human-computer interaction terminal (5), institute by ICP/IP protocol State FM reception communication modules (1), single-chip microcomputer (2), ethernet control chip (4) and be also associated with power module (3), the FM connects It is RDA5820 chips to receive communication module (1), including 32.768KHz crystal oscillators, FM receive the I2C interfaces of communication module (1) with it is described The I/O connections of single-chip microcomputer (2), the FXOUT interfaces that FM receives communication module (1) are connected with the A/D modular converters (6).

2. a kind of ethernet receiver of multichannel FM broadcast according to claim 1, it is characterised in that the single-chip microcomputer (2) it is C8051F340 single-chip microcomputers.

3. a kind of ethernet receiver of multichannel FM broadcast according to claim 1, it is characterised in that the ether network control Coremaking piece (4) model CH395.

4. the ethernet receiver of a kind of multichannel FM broadcast according to claim 1, it is characterised in that the FM receives logical The quantity of letter module (1) is up to 6.