Research And Design Of Medium Wave Transmitter Monitoring System Based On Embedded System

As one of the most common media in people's daily life,broadcast has a vast market with its extensive coverage,transmission rate,the simple ways to listen and other traditional advantage.Broadcast transmitter is the entire broadcasting system of the signal emission source.The quality of its running state is directly affected by the broadcast.With the development of science and technology,computer is used in more and more system monitoring and management.Medium wave transmitter is a type of radio transmitter.The progress of science and technology makes the amplification device medium wave transmitter was achieved in the from all the tubes to solid-state transformation,monitoring system used to monitor and control the transmitter will constantly improve and perfect.With the continuous development of the embedded technology,the embedded technology is used in medium wave transmitter monitoring system,to research and design the realization of intelligent monitoring system of radio transmitter.It has the vital significance to guarantee the medium wave transmitter transmitting quality and promotes the automation and intelligent development of medium wave broadcast transmitter.This paper is based on a certain project.According to the user demand,this design of medium wave transmitter monitoring system is divided into two parts.They are the front data acquisition board and the terminal monitoring.The front data acquisition board is based on high performance STM32 processor as the core of data signal processing;terminal control is the control center to Samsung S5PV210 processor.It includes the design of power supply circuit,data acquisition,fault detection input,control output and communication interface.Terminal embedded system for Linux and a graphics application development uses the high performance GUI system development called Qt/Embedded.The front acquisition system and terminal monitoring data transmit through the serial communication.The design of system terminal software adopts the idea of hierarchical and modular.Use object oriented design method and the Qt/Embedded rich class,to complete the data acquisition,data processing,data display,data storage,data query control command output and other functions.Eventually the visualization management,graphical user interface,friendly interface,and simple operation are all realized.Aiming at the possible interference,a method of anti-interference is given.At the same time,the research of real time and reliability of Linux is carried out.By adding the improved LSF algorithm and file immune algorithm,the performance of the whole system is improved.Finally this article has carried on the system function and performance testing.The results show that the system is stable and reliable,and meets the demand of the customers.