原子能科学技术2017，Vol.51Issue(10)：1893-1897,5.DOI:10.7538/yzk.2016.youxian.0773
基于FPGA的时间间隔测量设计与实现
Design and Realization of High Precision Time-interval Measurement Based on FPGA
摘要
Abstract
A time-to-digital converter (TDC)with high precision based on field-programmable gate array (FPGA)was presented in this paper.The method combining coarse counting and fine time measurement was adopted in the design.The coarse counting depended on a good performance binary counter and the fine time measurement was realized by using a fast carry chain to implement the time interpolation.For improving measure resolu-tion,the method of Wave-Union was also employed in the design to divide the ultra-wide bin width.Various tests were implemented to check the performance of TDC,and some excellent results were achieved.The test results show that the time resolution (FWHM)of TDC is less than 50 ps within a wide dynamic range greater than 200 ms. The differential non-linearity (DNL)is in the range of - 1-1.5 LSB,and the integral non-linearity (INL)is in the range of -1.5-1.5 LSB.The TDC will be used in In-beam position emission tomography (PET)equipment for time-of-flight measurement.关键词
时间-数字转换器/FPGA/进位链/Wave-UnionKey words
TDC/FPGA/carry chain/Wave-Union分类
信息技术与安全科学引用本文复制引用
魏煜秦,孔洁,杨海波,赵红赟,千奕,佘乾顺,陈金达,李良辉,苏弘..基于FPGA的时间间隔测量设计与实现[J].原子能科学技术,2017,51(10):1893-1897,5.基金项目
国家自然科学基金资助项目(11605265,11475233,11475234) （11605265,11475233,11475234）
