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基于TDC7201芯片的高精度激光脉冲飞行时间测量模块研究
投稿时间:2018-03-07  修订日期:2018-03-07  点此下载全文
引用本文:汪佳佳,刘鸿彬,李铭,张冰娜.基于TDC7201芯片的高精度激光脉冲飞行时间测量模块研究[J].红外,2018,39(5):13~19
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作者单位E-mail
汪佳佳 中国科学院空间主动光电技术重点实验室 wangjiajia_ecnu@163.com 
刘鸿彬 中国科学院空间主动光电技术重点实验室  
李铭 中国科学院空间主动光电技术重点实验室  
张冰娜 中国科学院空间主动光电技术重点实验室 zhang_bn@mail.sitp.ac.cn 
中文摘要:设计了一种高精度、高线性度、轻小型激光脉冲飞行时间测量模块。结合TDC7201芯片在时间测量方面的优势,将其作为时间测量核心部分,并将STM32F103RET6微控制器作为主控芯片来控制整个模块的工作。实验结果表明,该模块在12 ns~100 μs时间间隔范围内的时间测量精度最高可达4.1 ps;测量结果的线性拟合相关系数为1,且能够测量激光脉冲主波与5个回波之间的时间间隔。该模块可满足基于硅光电倍增管(Silicon Photomultiplier, SiPM)的脉冲式激光测距系统的高精度、高线性度、多回波、轻量化等实际应用需求。
中文关键词:TDC7201  时间测量  高精度  高线性度  多回波
 
Research on High Precision Laser Pulse Time Measurement Module Based on TDC7201
Abstract:A high precision, high linearity, light and small module for measuring time of flight of laser pulses is designed. Because the TDC7201 chip has advantages in time measurement, it is used as the core for time measurement. The STM32F103RET6 microcontroller is used as the main control chip for controlling the whole module. The experimental results show that the module has its time measurement accuracy up to 4.1 ps in the time interval range from 12 ns to 100 μs. The linear fitting correlation coefficient of the measurement result is 1. It can measure the time intervals between the main laser pulse and five echoes. This module can meet the practical application requirements of high precision, high linearity, multi-echo and lightweight of the pulsed laser ranging systems based on SiPM.
keywords:TDC7201  measurement of time intervals  high precision  high linearity  multiple echoes
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