双音复频技术在井下数据传输中的应用  

Application on double audio frequency technology to data transmission in underground mine

作　　者：李阳铭[1] 韩江洪[1] 金浩[1] 

机构地区：[1]合肥工业大学计算机与信息学院,安徽合肥230009

出　　处：《煤炭科学技术》2005年第11期22-25,共4页Coal Science and Technology

基　　金：安徽省"十五"二期科技攻关项目(040120492)

摘　　要：针对矿井等工业生产环境中,对控制系统的可靠性、实时性要求高的情况,将双音复频技术应用于强噪声环境中低速率信号的远距离传输中。分析、论证了双音复频信号抵御环境噪声的能力,并以双音复频专用芯片MT8888为例,设计、实现了利用双音复频技术进行信号传输的方法。Base on the requirements of the reliability and actual time for the control system in mine and other industrial production environments, the double audio frequency technology has been applied to long distance transmission of the lower speed rate signal in the high noise environment. The paper analyzed and proved the ability of the double audio frequency signal to resist the environment noises. With the special chip MT8888 of the double audio frequency, the signal transmission method was designed and applied with the double audio frequency technology.

关 键 词：双音复频 噪声分析 低速率信号 远距离传输 

分 类 号：TN912.11[电子电信—通信与信息系统]