频移键控在单芯电缆通讯中的原理与实现  

Principle and Performance of FSK in Single-Core Cable Communication

作　　者：王丽 吴利华 朱亮 WANG Li;WU Lihua;ZHU Liang(NO.2 Oil Production Plant,PetroChina Huabei Oilfield Company,Bazhou,Hebei 065703,China;NO.3 Oil Production Plant,PetroChina Huabei Oilfield Company,Hejian,Hebei 062450,China;Guizhou Tianshi Energy Technology CO.LTD.,Guiyang,Guizhou 550009,China)

机构地区：[1]华北油田公司第二采油厂,河北霸州065703 [2]华北油田公司第三采油厂,河北河间062450 [3]贵州天石能源科技有限公司,贵州贵阳550009

出　　处：《测井技术》2020年第1期8-11,54,共5页Well Logging Technology

摘　　要：单芯电缆通讯是实现油田数控测井系统的基础技术。通过各种单芯电缆通讯方式对比分析,在实现单芯电缆通讯方案时,选择了一种在工业领域应用广泛、可靠性较高的通讯编码方式,即频移键控。介绍通过锁相环芯片及放大滤波等硬件电路实现频移键控调制解调的方法,在实际的单芯通讯中,有效避免了井下电机动作等因素造成的干扰,实现了高可靠的通讯。Single-core cable communication is the basic technology for realizing the digital control logging system in oilfields.Comparative analysis of various single-core cable communication schemes proves that frequency shift keying can be selected,which is widely used in industry and highly reliable.Introduces the method of realizing FSK modulation and demodulation by PLL chip and amplifying and filtering hardware.In field single-core communication,it effectively avoids the interference caused by the action of the underground motor and realizes highly reliable communication.

关 键 词：数控测井系统 单芯电缆 频移键控 调制 解调 锁相环 单片机 

分 类 号：P631.83[天文地球—地质矿产勘探]