Design On Dataacquisition System For Digital Amplitude Modulation MW Broadcast Transmitter

With the development of computer technology,communication technology,network technology,as well as the appearance of new components, broadcasting undertaking has achieved rapid development.A new generation of radio transmitter, show a feature of all solid state, automation,digital. In some large radio launch stations, some daily works has been automation and informationization.But in many small and medium-sized stations, mountain launch stations, the work environment is relatively tough,daily work of checking-up machines is artificial,on duty personnel working strength is big, the efficiency is low.In order to improve the informationization level of small and medium-sized launch stations,this design mainly discusses how to use the ARM microprocessor to get the data collection of all solid state digital am medium wave transmitter(Digital Amplitude Modulation).The PLC data acquisition system of the medium wave transmitters is expensive,shortcomings,and so on.In order to overcome these questions,this article embarks from the radio transmitting station actual demand,this paper discusses the functions of the data acquisition system, the hardware and software.As electromagnetic environment of the data acquisition system is very complex, so the more effective antiinterference measures for system design is necessary.The microprocessor is samsung 32 bit microprocessor S3C44B0 X chip.The analog acquisition of transmitters, uses the multi-channel analog switch and A/D analog-todigital converter connected method.Switch input and output adopted EPM240 chip.Communication mode including USB bus, Ethernet, UART, etc.