摘要
针对管道、矿山和水下等特殊环境中的信息通讯与信号传输等问题,根据超长波(ELF Electromagnetic Wave)具有传播损耗小且相位稳定等特点,给出了超长波发射与接收系统的设计原理与实现过程。发射系统采用单片机控制,输出的信号经发射天线产生23 Hz超长波,接收系统对采集到的信号进行带通滤波及放大处理。工程实验表明,所设计的系统在锂电池供电状态下,具有发射功耗低(连续工作时间大于72 h)、发射功率大(传播距离大于10m)、且对接收的信号处理快速可靠(动态时滞小于5 s)等优点。
To the information communicating problems in special conditions such as pipeline and mine environment, considering the ELF electromagnetic wave with low transferring loss and stable phase position characteristics, a design method of the ELF electromagnetic wave emission and receiving system is proposed. The emission system is controlled by MCU, and the output signal makes the 23 Hz ELF electromagnetic wave through the antenna. The acquisition signal is band-pass filtered and amplified by the receiving system. The engineering experiment shows that the system powered by battery possesses the advantages such as low power consumption, high-power transmitting, quickly and reliably signal receiving capability.
出处
《控制工程》
CSCD
北大核心
2009年第3期338-341,370,共5页
Control Engineering of China
基金
国家863高技术研究计划基金资助项目(2006AA04Z205)
关键词
超长波
发射系统
低功耗
带通滤波
ELF electromagnetic wave
emission system
low power consumption
band-pass filter
