电子式电流互感器数据采集系统的设计  

Design on data acquisition system of electronic current transformer

作　　者：冯巧玲[1] 裴永占[1] 

机构地区：[1]郑州轻工业学院电气信息工程学院,河南郑州450002

出　　处：《郑州轻工业学院学报（自然科学版）》2013年第3期83-85,共3页Journal of Zhengzhou University of Light Industry:Natural Science

摘　　要：以STM32F107RB微控制器为控制核心,采用无源支柱式方案,设计了电子式电流互感器数据采集系统,该系统将信号通过电缆传至低压侧,以提高电子电路部分可靠性;根据多通道数据采集的思想,放大器采用集成芯片LMP2014MT对小信号进行不同增益的放大,以减小AD转换的量化误差,提高采集精度;硬件设计采用功能强大的STM32控制AD转换,传送信号至合并单元.该系统简化了采集器电子电路,在提高精度的同时增强了电路稳定性.With the STM32F107RB as the controller, and the scheme of passive pillar type as the design scheme, the data acquisition system of electronic current transformer was designed. The signal was transmitted to low voltage side through the cable to improve the reliability of electronic circuit. On the grounds of multi-channel data acquisition, integrated chip of LMP2014MT was taken as amplifier to amplify the small signal by different gains, so that the quantification error of AD conversion was reduced to improve the precision of the acquisition. Hardware design used powerful STM32 to control AD conversion and then to transmit signal to merging unit. This system can simplify electronic circuit and improve the precision while strengthening the stability of circuit.

关 键 词：电子互感器 AD转换器 STM32 数据采集系统 

分 类 号：TM452[电气工程—电器]