摘要
针对目前普遍使用由继电器组成的倒换控制器存在的缺陷,本文用单片机控制原理,提出一种检测同轴开关在整个历程中的逻辑控制电路,实现了中波发射信号传输到天线和假负载的倒换,包括单片机电路、联锁电路、倒换控制电路、假负载电路、显示屏电路部分。本文基于Lab VIEW软件平台和单片机硬件相结合,实现中波天线同轴开关倒换系统设计,虚拟仪器技术与单片机可编程技术有力地推进了中波发射系统倒换智能化的应用。
In view of the flaws of the switch controller composed of relays which are widely used at present,this paper proposes a detection coaxial switch state in the process of logic control circuit by using the control principle of a single--chip computer,which realizes the medium wave emission signal transmission to the antenna and the rearrangement of dummy load,including single-chip circuit,interlock circuit,rearrangement of the circuit,dummy load circuit,display circuit parts.In this paper,based on the combination of the LabVIEW software platform and SCM hardware,the coaxial switching system design of a medium-wave antenna is realized.Virtual instrument technology and SCM programmable technology effectively promote the intelligent application of medium wave transmitting system switching.
作者
何吉祥
He Jixiang(Zhongshan Medium-wave Broadcasting Station of Guangdong Province,Guangdong 528400,China)
出处
《广播与电视技术》
2022年第12期109-112,共4页
Radio & TV Broadcast Engineering
