短距电磁脉冲无线数字传输系统设计
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摘要
基于井下近钻头信息短距离有线传输安全性低,声波传输信息量小的问题,本文设计了短距电磁脉冲无线数字传输系统。该系统是采用SOPC技术,基于可编程逻辑器件FPGA内嵌NiosII软核处理器为核心的数字传输系统,包括电磁脉冲发送与电磁脉冲接收部分,接收电路中采用了高速低功耗的串行模数转换器,接收滤波器采用了FPGA设计分布式算法的高阶高速匹配滤波器,该滤波器可获得理论上最佳信噪比。实验结果表明:匹配滤波器滤波后较直接接收信号的信噪比提高了5 dB。该系统具有传输速率高,整体系统功耗低的优点。
The short distance wired transmission of near bit information is low security. Sound wave transmission rate is low. An electromagnetic pulse short-distance wireless digital communication system is designed in the paper. Based on SOPC technology,the CPU of system uses NiosII processor embedded IP core on FPGA. The system is composed of two parts: the transmitter part and the receiver part over drilling tools. An analog digital converter of high speed and low power is adopted for signal acquisition.Receiver filter is a high speed and high order matched filter designed with distributed arithmetic(DA)on FPGA. The experimental result shows that the signal to noise ratio of the direct received signal is improved by 5 dB after the matched filter. Advantages of the system are high transmission rate and low power.
The short distance wired transmission of near bit information is low security. Sound wave transmission rate is low. An electromagnetic pulse short-distance wireless digital communication system is designed in the paper. Based on SOPC technology,the CPU of system uses NiosII processor embedded IP core on FPGA. The system is composed of two parts: the transmitter part and the receiver part over drilling tools. An analog digital converter of high speed and low power is adopted for signal acquisition.Receiver filter is a high speed and high order matched filter designed with distributed arithmetic(DA)on FPGA. The experimental result shows that the signal to noise ratio of the direct received signal is improved by 5 dB after the matched filter. Advantages of the system are high transmission rate and low power.
引文
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[2]张天广.欠平衡钻井技术发展探析[J].化工管理,2016(5):152.
[3]谷峥.金属管道内短距离无线传输特性研究[D].成都:西南石油大学,2015.
[4]王加庆,张月霞.石油钻井井下短距离传输系统的设计与实现[J].北京信息科技大学学报:自然科学版,2016,31(5):64-67.
[5]刘青,徐婷,韩康康,等.电磁脉冲在地上及地下的传播规律[J].高压电器,2016,53(1):51-56.
[6]莫培旺,王力虎,刘明建,等.基于ADS1278的高精度微应变信号采集系统[J].电子设计工程,2013,21(23):80-82.
[7]纪春国,卢丹.基于AD9762和EP2C70的低功耗轻型化调制器设计与实现[J].电子设计工程,2016,24(3):109-111.
[8]潘松,黄继业.EDA技术实用教程:VHDL版[M].5版.成都:电子科技大学出版社,2013.
[9]佩德罗尼,著.VHDL数字电路设计教程[M].乔庐峰,王志功,译.北京:电子工业出版社,2013.
[10]刘严.基于LabVIEW匹配滤波器最佳接收机的仿真[J].电子设计工程,2013,32(5):72-74.
[11]贺钱琛,王丹.基于SystemView的匹配滤波器设计与仿真[J].现代工业经济与信息化,2016,115(7):98-99.
[12]文承淦,纪元法,孙希延,等.基于分段串行匹配滤波结合FFT的快速捕获方法研究与FPGA实现[J].科学技术与工程,2016,16(7):204-209.
[13]朱效效,蔡俊,陆伟.基于优化DA算法滤波器的设计及其FPGA实现[J].电子技术应用,2015,41(2):59-60.
[14]石立国,侯鸿杰,王竹刚,等.基于分布式算法的多项抽取滤波器设计[J].现代电子技术,2016,39(23):68-71.
[15]周云,冯金源.基于位并行DA结构的高速FIR滤波器[J].微电子学,2016,46(3):383-392.
[16]Pong P.Chu(著),金明录(译),门宏志(译)基于Nios2的嵌入式SoPC系统设计与Verilog开发实例[M].北京:电子工业出版社,2015.
[17]王侠郭,海涛.基于SOPC的定时器控制数码管显示[J].电子设计工程,2016,24(15):162-164.
[18]崔旭晶,李天雷.基于SOPC的UART IP核设计与驱动开发及系统移植[J].电子设计工程,2014,22(11):121-125.
[19]申礼斌,李立欣,冯浩.基于SOPC的便携式数字示波器设计与实现[J].电子设计工程,2014,22(18):65-68.