基于TMS320F2812变频电源的交流采样系统设计  

Design of AC Sampling System Based on TMS320F2812 Variable-Frequency Power Supply

作　　者：王荣海[1] 乔之勇[1] 

机构地区：[1]绵阳职业技术学院,四川绵阳621000

出　　处：《现代电子技术》2009年第24期189-191,共3页Modern Electronics Technique

摘　　要：详细介绍利用HCNR200及TMS320F2812内置ADC采集交流电压和负载电流信号的系统设计。HCNR200是一款专门用于模拟信号隔离采样的高精度线性光耦。它的使用能有效地将主电路与控制电路进行隔离,并具有较高的线性度,检测误差小。DSP内置ADC为12位转换器,具有转换精度高,转换时间短(12.5 MSPS),设计简单等优点。In this paper, the design of AC sampling system by linear optocoupler HCNR200 and TMS320F2812 ADC module is introduced in detail. HCNR200 is a high accuracy linear optocoupler witch is specially used in the analog signal isolation sampling. Its use can effectively isolate between the main circuit and the control circuit,and it has high linearity so that the measurement error is small. The inner ADO module is a 12-bit pipelined analog-to-digital converter,and its fast conversion time runs at 25 MHz.

关 键 词：HCNR200 TMS320F2812 模拟隔离 交流采样 

分 类 号：TP368.1[自动化与计算机技术—计算机系统结构]