手持宽带数字存储示波器的设计与实现  

Design and Implementation of a Hand-held Wide BandwidthDigital Storage Oscilloscope

作　　者：胡斌强[1] 苏绍璟[1] 王跃科[1] 

机构地区：[1]国防科学技术大学仪器科学与技术系,湖南长沙410073

出　　处：《计算机测量与控制》2006年第10期1423-1425,共3页Computer Measurement &Control

基　　金：国防科技大学人才基金资助项目(2006030301)

摘　　要：针对野外作业和生产现场测试需要,提出了一种手持宽带存储数字示波器的设计与实现方案,采用可程控宽带信号调理技术实现了200MHz的信号模拟通道设计和高速触发模块设计;采用多通道并列技术实现了200MSps的实时采样,采用基于参量模型的等效采样技术实现了10GSPs的等效采样;采用多任务软件技术实现对系统的管理和人机交互。采用可充电的锂电池给系统供电实现了示波器的便携和在无交流电环境下的测试;测试证明,该手持宽带存储数字示波器具有良好性能和广阔的应用前景。An design of wide bandwidth hand held digital storage oscilloscope is invented to meet the need of the measurement in the field engi neering. The programmed wide bandwidth signal conditioning technique is used to realize the 200MHz analog signal channel and the trigger circuit. The interleaving/multiplexing technique is adopted to realize a 200MS/s real time data acquisition system. The equivalent time sampling method based on parametric model estimation is used to realize 10GSps equivalent time sampling. The multitask system technique is adopted to realize the management of the oscilloscope and the man--machine conversation. The rechargeabale lithium battery is used in the oscilloscope to make it more portable, so that the oscilloscope can be used in the fields without alternating current. It was tested that The wide bandwidth hand-held digital storage oscilloscope has good performance and can be used in many fields.

关 键 词：数字存储示波器 宽带信号调理 实时采样 等效采样 

分 类 号：TM935.3[电气工程—电力电子与电力传动]