基于DSP的直流电流采样系统设计  

Design of DC Sampling System Based on TMS320F2812

作　　者：龚思远[1] 杨鹏[1] 宋亮[1] 刘俊峰[1] 李永富[1] 

机构地区：[1]河北工业大学自动化研究所,天津市300130

出　　处：《微计算机信息》2008年第5期145-146,共2页Control & Automation

基　　金：国家自然科学基金委"智能下肢假肢肌电信号识别与控制机理研究"(60575009)

摘　　要：本文详细介绍了基于TMS320F2812的电流采样系统的设计方法。根据直流电流信号产生特点和采集技术的基本要求,选用合适的电流传感器LTS25-NP,设计电压变换电路,采用TMS320F2812型DSP的片上模数转换模块进行模数转换。并编写了滤波算法程序,对电流采样值进行滤波。实验表明,该方法可以提高信噪比,减小噪声,拥有较高精度。Design of DC sampling system based on TMS320F2812 was detailedly discussed. According to the special character of DC and basic need of collection technology,it had chosen the correct current sensor LTS25-NP,designed voltage conditioning circuit. The TMS320F2812 on-chip analog to digital converter module and filtering algorithm was adopted. Experiments showed that the de-signs can improve ratio of signal and noise,and detect the DC signal effectively.

关 键 词：TMS320F2812 电流传感器 电压变换电路 

分 类 号：TP36[自动化与计算机技术—计算机系统结构]