用于钻柱振动加速度测量的电路设计  

Circuit Design for Vibration Acceleration Measurement of Drill String

作　　者：程晶晶[1] 高双[1] 孟祥隆 孙豫斌 

机构地区：[1]华中科技大学自动化学院,湖北武汉430074

出　　处：《仪表技术与传感器》2017年第1期54-57,83,共5页Instrument Technique and Sensor

基　　金：高等学校博士学科点专项科研基金(20130142120065)

摘　　要：基于石油钻井钻柱的振动测量需求,研制了一种加速度测量电路,对井下钻柱的实时振动情况进行监测。由1个三轴加速度传感器单元和该测量电路组成的加速度测量组件,可向随钻测量仪器系统提供振动加速度过载报警信号和实时的加速度测量数据。基于反熔丝可编程逻辑器件A3P1000和32位定点DSP器件TMS320F2812设计的测量电路满足了钻柱振动加速度测量的高精度、高可靠性、与主控系统实时通讯等要求。单轴随机振动(10~100 Hz,5 g)测试表明,加速度功率频谱密度测量误差小于5%,满足石油钻井钻柱的振动测量需求。Vibration measurement based on the demand of oil drilling, an acceleration measurement circuit is developed to monitor the real-time vibration of drill string in downhole.The acceleration measuring assembly is composed of a three-axis accel- eration sensor unit and the measuring circuit,which can provide the vibration acceleration overload alarming signal and the real- time acceleration measurement data.Based on the antifuse field programmable gate array device of A3P1000 and 32-bit fixed- point DSP device of TMS320F2812 can meet the requirements of drilling string vibration acceleration measurement of high preci- sion, high reliability, and the real time communication with main controlling system.The random vibration of single axis（ 10 ～ 100 Hz,5g） test shows that the error of acceleration power spectrum density（PSD） is less than 5% ,which meets the demand of vibra- tion measurement of oil drilling.

关 键 词：钻柱 随机振动 加速度测量 测量电路 

分 类 号：TE242[石油与天然气工程—油气井工程]