CN203251305U

CN203251305U - RDS frequency modulation broadcast addressable front terminal

Info

Publication number: CN203251305U
Application number: CN 201320270299
Authority: CN
Inventors: 彭铸; 蒋雪梅; 何诚
Original assignee: Sichuan Xinpengyuan Guangtong Science & Technology Co Ltd
Current assignee: Sichuan Xinpengyuan Guangtong Science & Technology Co Ltd
Priority date: 2013-05-17
Filing date: 2013-05-17
Publication date: 2013-10-23
Anticipated expiration: 2023-05-17

Abstract

The utility model relates to an RDS frequency modulation broadcast addressable front terminal, which is characterized by comprising a microprocessor, a touch LCD, an RDSFM receiving module group, an RDSFM modulation module group, a GSM remote telephone broadcast module group, an emergency switch, an audio line input terminal 1, an audio line input terminal 2, an audio line input terminal 3, a microphone preamplifier, an audio frequency level display, a radio frequency output terminal, a radio frequency input terminal, an audio frequency amplifier, and a machine monitoring horn. Compared with the prior art, the RDS frequency modulation broadcast addressable front terminal provided by the utility model has advantages of simple operation, concentrated functions, international standard achieved, stable performance and convenience for popularization.

Description

A kind of RDS FM broadcasting addressable front end

Technical field

The utility model relates to a kind of FM broadcasting addressable headend equipment, particularly a kind of RDS FM broadcasting addressable front end.

Background technology

There are some drawbacks in existing broadcast system addressable front end: 1. mostly adopt computer to carry out addressable device control in addressable broadcast system, but some device display panels are smaller, can not show abundant information, utilize panel button to be difficult to implement the operation of more heterogeneous pass; 2. the addressable device function singleness that has the parts of bulk deposition and the connecting line of relevant winding often occur when setting up front end, brings inconvenience to installment work; 3. existing broadcasting addressable front end adopts subcarrier coding (the Subsidiary Communication Authorization in the f-m multiplex technology mostly, SCA) realize addressable control, but SCA does not have standard encoding and decoding rule, circuit system is complicated, cost is high, and easy break-down, because above technical problem, under many circumstances, existing addressable front end can't be widely applied.

Summary of the invention

The purpose of this utility model is the technical problem for existing broadcast system addressable front end, provide a kind of simple to operate, function is concentrated, meet international standard, stable performance, the RDS FM broadcasting addressable front end being convenient to popularize.

A kind of RDS FM broadcasting addressable front end, it is characterized in that, its structure comprises that microprocessor, touch LCD display, RDS FM receive module, RDS FM modulation module, GSM remote phone module, emergency switch, voice band line input 1, voice band line input 2, voice band line input 3, microphone preamplifier, audio level display, radio frequency output port, rf inputs mouth, audio frequency amplifier, the machine monitoring loudspeaker formation.

Microprocessor is connected with RDS FM reception module, audio switch, GSM remote phone broadcasting module, emergency switch, touch LCD display, RDS FM modulation module respectively; Audio switch is connected with voice band line input 1, voice band line input 2, voice band line input 3, microphone preamplifier, GSM remote phone broadcasting module, audio level display, RDS FM modulation module, audio frequency amplifier, microprocessor; The rf inputs mouth receives module with RDS FM and is connected; Radio frequency output port is connected with RDS FM modulation module.Wherein, RDS FM reception module is to be made of FM demodulator, audio demodulator, RDS decoder, signal level detecter, data buffer and numerical control audio frequency amplifier; RDS FM modulation module is to be made of FM modulator, RDS encoder, numerical control radio frequency amplifier and data buffer.

Compared with prior art, the utility model has the advantage of:

1. adopt the touch-screen of large panel, simple and efficient to handle, be user-friendly to greatest extent.

2. the function integration is high, and the establishment of broadcasting addressable front end is oversimplified, and is convenient to popularize.The integrated RDS FM of the utility model receives module, is convenient to higher level's signal and receives and turn and the forwarding of RDS control code; Integrated RDS FM modulation module is realized RDS coding and FM modulation; The integrated multi-channel audio frequency control is selected voice-grade channel automatically, realizes unattended operation; Integrated GSM remote phone broadcasting module is convenient to carry out urgent broadcast.

3. the RDS data system of adopting international standards, the encoding and decoding with standard are regular, and the circuit integration that relates to is high, and circuit is simple, and dependable performance is convenient to produce and is promoted.

Description of drawings

Fig. 1 is RDS FM broadcasting addressable front end operation principle block diagram of the present utility model.

Embodiment

Consult shown in the accompanying drawing embodiment, the utility model is explained in further detail.

RDS FM broadcasting addressable front end as shown in Figure 1, it is characterized in that, its structure comprises that microprocessor, touch LCD display, RDS FM receive module, RDS FM modulation module, GSM remote phone broadcasting module, emergency switch, voice band line input 1, voice band line input 2, voice band line input 3, microphone preamplifier, audio level display, radio frequency output port, rf inputs mouth, audio frequency amplifier, the machine monitoring loudspeaker formation.

The embodiment of the utility model RDS FM broadcasting addressable front end is:

1. have three voice band line inputs and a microphone preamplifier, equipment is according to the touch panel setting, the source of sound of the input of automaticallying switch.When not having higher level's signal and crisis phone only broadcasting, equipment can be broadcasted automatically according to working hour, broadcast address and the input source of sound passage of touch-screen setting.

2. the RDS FM in the equipment receives the control information that module is used for receiving the decode upper level audio signal and RDS the inside, when the broadcasting of upper level signal is arranged in the system, microprocessor can the instruction audio switch switch to RDS FM modulation module to voice-grade channel, microprocessor transfers to RDS FM system module to the RDS control code that receives simultaneously, RDS FM modulation module is modulated to the audio signal of upper level and RDS control information on the radio frequency again, transfer to wireless frequency modulation network or HFC cable TV network by radio frequency output port, play the effect that automatic folding turns upper level broadcasting.

3.GSM remote phone broadcasting module is connected on the audio switch and microprocessor on, because equipment acquiescence telephone-broadcast is the override level, so as long as the incoming call of telephone-broadcast is at any time arranged, at once instruction audio switch of microprocessor switches to telephone-broadcast, simultaneously the address code of telephone-broadcast input is modulated to radio frequency by RDS FM modulation module, be transferred in the system by radio frequency output port and distinguish, play the effect of emergent broadcast.

4. the emergency switch in the equipment is connected with microprocessor, and when being in a state of emergency, as long as open emergency switch, microprocessor will send the total system start-up command, implements instruction by RDS modulation module, and the whole system terminal will enter operating state immediately.

The above; it only is the better embodiment of the utility model; but the scope that comprises of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; be equal to replacement or change according to the technical solution of the utility model and utility model design thereof, all should be encompassed within the protection range of the present utility model.

Claims

1. RDS FM broadcasting addressable front end, it is characterized in that, its structure comprises microprocessor, the touch LCD display, RDS FM receives module, RDS FM modulates module, GSM remote phone broadcasting module, emergency switch, voice band line input 1, voice band line input 2, voice band line input 3, microphone preamplifier, the audio level display, radio frequency output port, the rf inputs mouth, audio frequency amplifier, the machine is monitored loudspeaker and is consisted of, and described microprocessor receives module with RDS FM respectively, audio switch, GSM remote phone broadcasting module, emergency switch, the touch LCD display, RDS FM modulation module is connected; Described audio switch is connected with voice band line input 1, voice band line input 2, voice band line input 3, microphone preamplifier, GSM remote phone broadcasting module, audio level display, RDS FM modulation module, audio frequency amplifier, microprocessor; Described rf inputs mouth receives module with RDS FM and is connected; Described radio frequency output port is connected with RDS FM modulation module.