Research On Monitoring System Of Radio And Television Transmitting Station

In order to satisfy people's pursuit of entertainment life,the number of radio and television transmitting stations has been increasing in recent years.It is of great significance to realize the remote monitoring of the operating environment of the radio and television transmitting station room and the radio and television transmitting equipment to ensure the safe broadcasting of radio and television.The traditional way of monitoring the operating environment of the computer room and the status of transmitter equipment by manual timing can not meet the monitoring requirements of the radio and television industry that people stay behind and nobody is on duty.It is particularly important to realize the remote monitoring of the radio and television transmitter station by using the existing information network technology.Firstly,based on the analysis of the monitoring requirements of radio and television transmitters,this dissertation proposes a remote monitoring scheme of radio and television transmitters based on Lo Ra.Radio and TV transmitter monitoring system consists of monitoring node,repeater,concentrator,upper computer and device cloud App.Long-distance communication among monitoring nodes,repeaters and concentrators is carried out through Lo Ra network.The monitoring node controls the radio and television transmitter and collects station operation information.The relay forwards Lo Ra network signals.On the one hand,the concentrator uses the 4G module to connect the 4G base station,upload monitoring information to One NET cloud platform server,on the other hand,it uses RS-485 to communicate with the host computer serially.Secondly,this dissertation designs the communication protocol of the monitoring system and the software and hardware of the system equipment,completes the function realization of the host computer based on Lab VIEW,and uses the device cloud App to realize the mobile phone side view of the operation information of the radio and television transmitter.Then,aiming at the collision problem of data transmission in Lo Ra wireless network,based on the analysis of the existing anti-collision mechanism,a CSMA algorithm based on channel fair competition is proposed.The effectiveness of this algorithm in improving channel utilization,reducing average delay and reducing the probability of slot collision is verified by OPNET simulation platform.Finally,the system is tested.The test results show that the radio and television transmitter monitoring system designed in this dissertation has perfect functions,high efficiency and reliability of communication network,real-time and accurate alarm,and strong expansibility.It provides an effective solution to improve the level of intelligent monitoring of radio and television transmitter.