FPGA的双时间法在变粘度油流量装置上的应用  

Two-time method based on FPGA applied to the oil flow standard device with variable-viscosity

作　　者：梁华锋[1] 梁国伟[1] 马文涛[1] 孙斌[1] 

机构地区：[1]中国计量学院计量测试工程学院,浙江杭州310018

出　　处：《中国计量学院学报》2011年第4期327-331,共5页Journal of China Jiliang University

基　　金：国家科技支撑计划课题协作项目(No.26-09042KF)

摘　　要：由于变粘度油流量标准装置标准器容积较小,检定时间短,容易产生较大的计时计数误差.现根据双时间脉冲插值计数原理,以现场可编程门阵列(FPGA)为主要硬件研制了高精度计数系统,用于解决检定过程记录脉冲个数不足的问题,实现对检定时间和标准体积管及被检表发送脉冲数的精确记录.实验结果表明,脉冲插值效果良好.As the oil flow standard device with variable-viscosity had a little volume tube and the calibrate time is short there will be a greater error of timing and counting.Based on the principle of two-time pulse interpolation counting method,we developed a high precision counting system with FPGA as the main hardware,in order to solve the problem that not enough pulses number were recorded during the certification process,and achieve the test time and the number of pulses sent by the standard volume tube and flow meter.The experimental results show that the pulse interpolation brought about a striking effect.

关 键 词：脉冲插值 标准体积管 双时间法 

分 类 号：TB99[一般工业技术—计量学]