The Design And Implementation Of Micro-controller System For Radio Transmitter

With the development of the science and technology,,radio technique developedby leaps and bound radio stations make high demands to Broadcasting system.Digitization, information and networked era has come, autoimmunization andintelligence demands of radio transmitter are proposed．Under the whole environment,the transmitter's controller, the core of a radio machine,has become one of the focalstudy points.The scheme of radio transmitter's micro-controller was designed according todemands of transmitter's micro-controller. This paper describes that how dosetransmitter work. Combined with characteristics of radio transmitter, the function ofthe system was analyzed. This paper mainly expounds how to design themicro-controller of the radio machine from coming up wholly. Then, we divide thewhole system into five parts include main controller, I/O, operator and machineexchange, memory, communication module. This paper also has narrated the choice ofrelevant devices according to the demands of system. Later the design of hardware andsoftware were introduced in detail.To satisfy the broadcasting's characteristics of low price and strong real-time,this system use the ATmega128 as the controller. In order to improve the stability thespecial technologies in hardware was used and the digital filter was used in software. ALCD module is applied in the micro．controller for operator and machine exchangeinformation．And with specific software we can operate the radio transmitter freely．The system adopts C language to develop the application of real—time monitor underthe CVAVR．...