基于线性滤波解调系统的GPRS数据传输系统研究  

Research on GPRS Data Transmission System Based on Linear Filtering Demodulation System

作　　者：徐文军[1] 杨尚明[1] 王中训[1] 

机构地区：[1]烟台大学,山东烟台264005

出　　处：《光电技术应用》2013年第2期40-43,70,共5页Electro-Optic Technology Application

基　　金：山东省省级攻关计划项目(WL10K28)

摘　　要：基于线性滤波器的解调系统是根据参考光路和滤波光路的比值改变来判断外界温度值的改变。实验中,通过对线性滤波器进行恒温控制消除了外界温度变化对其透过率的影响。对采集到的光信号进行光电转换并由AD采集模块进行采集,最后由在线监测系统经GPRS网络对两路光的比值及监测环境的图像或视频信息进行无线传输,将采集到的信息传输到主站上位机进行数据及图像信息显示和处理,从而实现解调系统对特殊环境下温度的远程实时在线监测。According to ratio changes of reference and filtering light paths, changes of outdoor temperature are estimated by a demodulation system based on linear filters. In experiments, the influence from changes of outdoor temperature on its transmittance is eliminated by constant temperature control on linear filters. Electro-optical con- version is performed to the collected optical signals and AD collection module is used to collect. Ratios of two light paths, images for monitoring environment and video information are transmitted in radio by on-line monitoring sys- tems through general packet radio service （GPRS） network finally. The collected information is transmitted to host PC for displaying and processing data and image information. And remote, real time and on-line monitoring on temperature in special environment is realized by the demodulation system.

关 键 词：光纤BRAGG光栅 解调系统 线性滤波器 GPRS ARM 

分 类 号：TN256[电子电信—物理电子学]