基于虚拟仪器串口采集的模拟钻柱动态力测量  

Channel Characteristic Analysis of Periodic Pipes Based on VirtualInstrument Serial Acquisition

作　　者：王德桂[1] 李成[2] 常金凤 

机构地区：[1]中联煤层气有限责任公司,北京102200 [2]北京航空航天大学"新型惯性仪表与导航系统技术"国防重点学科实验室,北京100191

出　　处：《新型工业化》2014年第1期23-27,共5页The Journal of New Industrialization

基　　金：国家自然科学基金资助项目(50905095)

摘　　要：虚拟仪器串行通信具有方便易行和节省信道成本等特点,但采用VISA的方法存在循环查询、响应慢和挤占大量线程时间的不足。为此,结合虚拟仪器的I/O子系统设置和数据同步,研究了基于MSComm控件实现串口中断采集的多线程设计方法,研制了一种基于虚拟仪器平台的模拟钻柱动态力无线测量装置,用于模拟钻柱旋转过程中轴向力、侧向力和扭矩的多线程检测。不同钻压和井斜角条件下底部钻柱组合的动态力学特性实验结果表明,该装置能够实现实验室内模拟钻柱的动态力实时测量,为理论分析底部钻具组合的井斜控制机理提供实验基础。Although virtual instrument-based serial data acquisition is characteristic of easy running and cost saving,the common method using LabVIEW VISA（Virtual Instrument Software Architecture） is unfit for real-time measurement because of the disadvantages of recurrent serial port inquiry, slow responses and much thread time. A multithread serial communication method using MSComm controller is analyzed in accordance with I/O system parameter setting and data synchronization. Then, a virtual instrument-based dynamic force wireless measurement device of simulated drillstring is developed to detect the axial forces,radial forces and torsional moments for rotating simulated drilstring multithreadedly in the laboratory. The dynamic force parameters of bottom-hole assembly,composed of simulated drillstrings,are measured under different weight on bit loads and deviation angles. The results show that the developed device can perform the on-line measurements in the laboratory and provide experiment basis for the theoretical analyses of the hole deviation control mechanism of bottom-hole assembly.

关 键 词：虚拟仪器 串口采集 MSCOMM控件 模拟钻柱 动态力 

分 类 号：TP216[自动化与计算机技术—检测技术与自动化装置]