激光汇聚原子系统中基于USB接口的数据采集  

Data acquisition based on USB interface in laser-focused atomic deposition

作　　者：张少真[1] 崔小虹[1] 殷聪[2] 钱进[2] 潘圆圆[3] 

机构地区：[1]北京理工大学光电学院,北京100081 [2]中国计量科学研究院纳米新材料计量研究所,北京100029 [3]国家知识产权局专利局专利审查协作北京中心,北京100080

出　　处：《电子测量技术》2015年第4期136-140,共5页Electronic Measurement Technology

摘　　要：在激光汇聚铬原子沉积研究中,需要用激光冷却铬原子,以压缩铬原子束的发散角。因此,必须将激光频率锁定在铬原子的7S37P40跃迁谱线上。为了实现对激光稳频状态的监测,设计了一套基于USB2.0接口的数据采集系统。系统选用EZ-USB FX2系列的CY7C68013作为USB控制芯片。利用LabVIEW开发了可视化界面。CY7C68013接受PC发出的指令,控制A/D转换电路采集稳频信号,并将其传输给PC。由PC完成数据的显示和存储。系统还设置了失锁报警功能,实现了对稳频的监测。The chromium atoms should be cooled to collimate the chromium atomic beam in the investigation of laser focusing chromium atoms deposition. Therefore, the frequency of the laser must be locked to the 7S3→7P40 transition of chromium atom. A data acquisition system based on USB communication is designed to monitor the state of frequency stabilization automatically. A Cypress＇s EZ-USB FX2, CY7C68013, is applied as the USB microcontroller and a visual interface is developed by LabVIEW. CY7C68013 accepts the instructions from the PC and controls the A/ D conversion circuit to collect the frequency stabilization signals and transform them to the PC. The signals are displayed and stored by PC. In addition, an alarm function is also included in the system to monitor the frequency stabilization.

关 键 词：数据采集 USB CY7C68013 激光汇聚原子沉积 激光 稳频 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]