便携数字式相关器设计  

Design of portable digital correlator

作　　者：高猛[1] 李文军[1] 

机构地区：[1]中国计量学院计量测试工程学院,浙江杭州310018

出　　处：《传感器与微系统》2017年第1期71-74,共4页Transducer and Microsystem Technologies

摘　　要：介绍了一种便携数字式相关器。相关器由MCU处理器EP4CE6E22C8N,USB 2.0接口CY7C68013A、高速光纤收发器HFBR—2526/1527、模/数转换电路等组成。论述了系统工作原理,阐述了硬软件搭建方案和核心器件的实现过程。利用该相关器对峰峰值为0.8 n V的微弱量子电压正弦信号进行了放大、相关、数据存储及计算。结果表明:该数字式相关器数据传输速度快,可用于实现微弱信号的检测。A portable digital correlator is introduced. It consists of MCU processor EP4CE6E22C8N, USB 2.0 interface chip CY7C68013A, high-speed optical transmitter and receiver HFBR-＇2526/1527, analog to digital conversion circuit, and so on. Working principle of device is described, configuration of hardware, design of software and realization of main device. Weak quantum voltage sinusoidal signal Whose peak-to-peak value is 0.8 nV is amplified correlated, data storage and calculated by digital correlator. The results show that the data- transmission speed of digital eorrelator is high and can be used for detection of faint signal.

关 键 词：噪声电压 微弱信号 互相关 数字式相关器 USB接口 

分 类 号：TB942[一般工业技术—计量学]