电子学报2012，Vol.40Issue(9)：1889-1892,4.DOI:10.3969/j.issn.0372-2112.2012.09.30
CPT原子频标数字温控系统优化设计与实现
Optimization and Realization of Digital Temperature Control System for CPT Atomic Frequency Standard
摘要
Abstract
Coherent population trapping (CPT) atomic frequency standards are small-size and low-power consumption atomic frequency standards emerged in recent years.The frequency stability of a CPT atomic frequency heavily depends on the performance of its temperature control system. This article presents our optimization design scheme of the digital temperature control system. In the system the instrumentation amplifier is used to increase the resolution of the temperature measurement, the wavelet analysis de-noise method is used for signal de-noise process, the pulse width modulation (PWM) square wave is precisely modulated through △-Σ algorithm, the output resolution is increased,and the harmonic interference is reduced.The realized temperature control system is a small size low power consumption circuit with good performance. With the improved circuit the frequency stability of the CPT atomic frequency standard is improved.This developed temperature control system specially suits for applications in small-size and low-power consumption CPT atomic frequency standards.关键词
数字温控/小波分析去噪/△-∑算法/脉冲宽度调制/原子频标Key words
digital temperature control system/ wavelet analysis de-noise/ △-Σ algorithm/ pulse width modulation/ atomic frequency standard分类
信息技术与安全科学引用本文复制引用
邓威,张奕,陈杰华,田原,吴红卫,顾思洪..CPT原子频标数字温控系统优化设计与实现[J].电子学报,2012,40(9):1889-1892,4.基金项目
国家自然科学基金(No.10927403) （No.10927403）
