摘要
随着对电磁辐射的不断研究,电磁干扰问题引起了人们的重视,其产生的危害也不容忽视,所以对周边居民环境电磁水平的检测成为首要解决的问题。在此设计了一种利用北斗定位技术进行的周边磁场强度的测量系统,详细地介绍了硬件原理和软件流程。该测量系统主要由新型带状线结构的近场磁场探头、混频电路、放大电路、A/D转换电路、单片机控制电路、北斗定位、显示器等模块组成。由探头采集高频信号,通过NE602混频芯片调制为中频信号,经AD620放大电路以及AD7793采样电路传输到80C51单片机,并读取北斗定位坐标传送给LCD12864显示,从而实现测量当地的电磁辐射水平。
With the research of electromagnetic radiation, electromagnetic interference problem has attracted people s attention, the harm of its also nots allow to ignore, so on surrounding residents environmental electromagnetic level detection become the primary problem. In this design a kind of using beidou positioning technology of the magnetic field intensity measuring system, this paper introduces the hardware principle and software flow in detail. The measurement system is mainly composed of new stripline structure of near field magnetic field probe, mixing circuit, amplifying c irc u it, A /D conversion c irc u it, single-chip microcomputer control c irc u it, beidou positioning, display module, etc. High frequency signal by the probe acquisition by NE602 mixer chip for intermediate frequency modulation signal, the AD620 amplifier circuit and AD7793 sampling circuit transmission to 80 c51, and reads the beidou positioning coordinates to LCD12864 display, so as to realize the electromagnetic radiation of measuring the local level.
出处
《科技创新导报》
2016年第22期79-82,共4页
Science and Technology Innovation Herald
基金
江苏省大学生创新项目资助(项目编号:201510300177)
关键词
电磁辐射
磁场探头
混频
STC89C51
北斗定位
Electromagneticradiation
Magneticfieldprode
Mixing
STC89C51
Beidou navigation and positioning
