精密时间间隔测量系统方案设计  

Scheme of Precise Time-interval Measurement System

作　　者：范晓东[1] 刘光斌[1] 

机构地区：[1]第二炮兵工程学院,陕西西安710025

出　　处：《无线电工程》2010年第9期55-57,共3页Radio Engineering

摘　　要：精密时间间隔测量技术在许多研究和应用领域都有十分重要的地位。基于数字信号处理(DSP)和现场可编程门阵列(FPGA)技术,将脉冲计数法和时间延展法相结合,设计了一个精密时间间隔测量方案。该方案测量范围由计数器决定,分辨率则由时间延展单元决定,分辨率为100ps,量程为650μs。该方法具有设计简单灵活、集成度高等优点,可广泛应用于时间、频率测量领域。Precise time-interval measurement plays an important role in many research and application fields. Based on DSP and FPGA, this paper designs a scheme of precise time interval measurement with the methods of pulse counting and time magnifying. The resolution of this module, decided by the time stretching, is lOOps, and the measurement range, decided by the counters, reaches 650us. With the advantages of simple design, agility and high integration, etc, this method can be widely used in the field of time and frequency measurement.

关 键 词：脉冲计数法 时间延展法 DSP FPGA 

分 类 号：TP216[自动化与计算机技术—检测技术与自动化装置]