现场数采设备的抗干扰措施

The Anti-Interference Measures For The Wellsite Data Units

消除信号干扰是石油勘探现场数采设备在研制和使用中必须解决的问题,它也是体现其运行可靠性和数据采集准确性的重要标志。该文从现场信号干扰来源、传播方式及影响因素的分析入手,论述了其干扰方式主要为电、磁及共阻抗干扰。文章重点阐述了干扰信号的消除方法和措施,提出了设备安装、使用中应采取的措施及注意事项;研制中硬件抗干扰方案,包括光电隔离法、稳压法,软件措施有消尖峰法、数字滤波法、加权递推平均法、RC仿真法、全部平均法和综合消除法。

Eliminating the signal interference is a problem which must be solved in the development and application of the data units in the exploration wellsites.It is an important sign indicating the availability and accuracy of the data acquisition.In view of the interference sources,transmission way and affecting factors of the signals,the paper deals with that its interference ways are mainly the electric,magnetic and common impedance interaction.It discusses the ways and measures to eliminate the interference signals and presents the adopted measures and notes in the unit installation and application and the anti-interference methods which include optical and electric isolation way and voltage stabilization way.The sofeware anti-interference methods are the ways of sharp peak elimination,digit filtration,weighted recursion average,RC emulation,all-average and integrated elimination.