基于FPGA 的移相时钟数字内插TDC电路设计与实现

大气与环境光学学报 ›› 2021, Vol. 16 ›› Issue (6): 553-560.

• 光电技术 • 上一篇

基于FPGA 的移相时钟数字内插TDC电路设计与实现

刘景岩1;2, 路美娜1, 王羿1, 蔡伟杰1;2, 宋茂新1∗, 洪津1

1 中国科学院合肥物质科学研究院安徽光学精密机械研究所, 中国科学院通用光学定标与表征技术重点实验室, 安徽合肥 230031; 2 中国科学技术大学, 安徽合肥 230031

收稿日期:2020-06-03 修回日期:2021-09-15 出版日期:2021-11-28 发布日期:2021-11-28
通讯作者: E-mail: smx0369@aiofm.ac.cn E-mail:lumeina@aiofm.ac.cn
作者简介:刘景岩 (1995 - ), 河北沧州人, 硕士研究生, 主要从事测试测量技术方面的研究。 E-mail: jyliu18@mail.ustc.edu.cn
基金资助:
Supported by National Key Research and Development Project (国家重点研发计划, 2016YFE0201400), Key Project of Hefei Institute of Physical Sciences, Chinese Academy of Sciences (中国科学院合肥物质科学研究院重点项目, Y73H9P1801)

Design and Implementation of Phase Shift Clock Digital Interpolation TDC Circuit Based on FPGA

LIU Jingyan1;2, LU Meina1, WANG Yi1, CAI Weijie1;2, SONG Maoxin1∗, HONG Jin1

1 Key Laboratory of Optical Calibration and Characterization, Anhui Institute of Optics and Fine Mechanics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China; 2 University of Science and Technology of China, Hefei 230031, China

Received:2020-06-03 Revised:2021-09-15 Published:2021-11-28 Online:2021-11-28

摘要/Abstract

摘要： 为实现高精度航天设备时序信号的地面检测, 设计了一套基于现场可编程逻辑门阵列 (FPGA) 的专用地面检测系统, 时间数字转换电路 (TDC) 是该系统的关键部件。该电路采用数字内插技术, 使用高频时钟直接计数进行“粗”测保证检测系统量程, 再利用待测信号跳变沿锁存移相时钟电平状态进行“细”测提高测量精度。分析了测量误差来源并提出了相应解决办法。实验结果表明, 该电路测量分辨率满足 0.2 ns 设计值, 重复性引起的测量不确定度小于 0.1 ns。

关键词: 地面检测, 时间间隔测量, 现场可编程逻辑门阵列, 时间数字转换电路

Abstract: In order to achieve high-precision ground detection of time sequential signals of aerospace equipment, a special ground test system based on field programmable gate array (FPGA) is designed, and time-to-digital converers (TDC) is the key component of the system. The circuit adopts digital interpolation technology, where high-frequency clock is used to directly count for “coarse” measurement to ensure the measuring system range, and “fine” measurement is achieved by latching the phase shift clock level at the edge of the signal to be measured to improve the measurement accuracy. The sources of measurement errors is analyzed and the corresponding solutions are put forward. Through experimental verification, it is shown that the measurement resolution of the circuit meets the design value of 0.2 ns, and the measurement uncertainty caused by the repeatability is less than 0.1 ns. The circuit has high measurement accuracy, good flexibility and convenient design, and can meet the application requirements of related detection systems.

Key words: ground test system, time interval measurement, field programmable gate array, time-to-digital conversion circuit

中图分类号:

P414

刘景岩, 路美娜, 王羿, 蔡伟杰, 宋茂新∗, 洪津. 基于FPGA 的移相时钟数字内插TDC电路设计与实现[J]. 大气与环境光学学报, 2021, 16(6): 553-560.

LIU Jingyan, LU Meina, WANG Yi, CAI Weijie, SONG Maoxin∗, HONG Jin. Design and Implementation of Phase Shift Clock Digital Interpolation TDC Circuit Based on FPGA[J]. Journal of Atmospheric and Environmental Optics, 2021, 16(6): 553-560.

参考文献 7

[1]	Yang Hongchun. On-orbit Calibration of Particulate Matter Polarimetry Suits [D]. Hefei: University of Science and Technology
	of China, 2019.
	杨洪春. 大气颗粒物监测仪在轨定标研究 [D]. 合肥: 中国科学技术大学, 2019.
[2]	Zhang Guangming. The Study and Realize of Ground Test Equipment for Optical Calibration Equipment On-Board [D]. Hefei:
	Anhui University, 2015.
	张光明. 星载光学定标装置地面检测设备的研究与实现 [D]. 合肥: 安徽大学, 2015.
[3]	Hao Fengda. Ground Test Equipment Design for Spaceborne Image Compression System [D]. Xi′an: Xidian University, 2018.
	郝丰达. 面向星载图像压缩系统的地面检测设备设计 [D]. 西安: 西安电子科技大学, 2018.
[4]	He Xiaoxuan. Research on Precision Time Interval Measurement Technology Based on FPGA [D]. Harbin: Harbin Institute of
	Technology, 2018.
	赫小萱. 基于 FPGA 的精密时间间隔测量技术研究 [D]. 哈尔滨: 哈尔滨工业大学, 2018.
[5]	Bai Xuefei, Feng Di, Qin Chuan, et al. Design and experimental study of high precision pulsed laser ranging system [J]. Laser
	Journal, 2019, 40(10): 6-10.
	白雪菲, 冯迪, 秦川, 等. 高精度脉冲激光测距系统设计与实验研究 [J]. 激光杂志, 2019, 40(10): 6-10.
[6]	Song Jian. Research on Precision Time-to-Digital Conversion Circuit Based on FPGA [D]. Hefei: University of Science and
	Technology of China, 2006.
	宋健. 基于 FPGA 的精密时间―数字转换电路研究 [D]. 合肥: 中国科学技术大学, 2006.
[7]	Zhong Chun, Wang Fei, Chen Juan. Design of precise time measurement system based on FPGA [J]. Electronic Measurement

基于FPGA 的移相时钟数字内插TDC电路设计与实现

Design and Implementation of Phase Shift Clock Digital Interpolation TDC Circuit Based on FPGA

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献 7

相关文章 3

编辑推荐

Metrics

本文评价

[1]	甘戈, 熊伟∗, 吴洋, 刘占才, 刘景岩, 朱双双, . 基于FPGA 的双通道旋转变压器测角系统设计[J]. 大气与环境光学学报, 2021, 16(4): 365-372.
[2]	甘戈, 熊伟, 陈迪虎, 许智龙, 金伟, . 基于PXI总线的星载单机地面检测通用接口卡设计[J]. 大气与环境光学学报, 2020, 15(3): 234-240.
[3]	胡开付王双保. 基于FPGA的CCD光积分时间大范围实时自调节系统[J]. 大气与环境光学学报, 2012, (5): 376-384.