基于FPGA的数字磁通计设计  

Design of digital fluxmeter based on FPGA

作　　者：朱玉玉[1] 罗卫军[1] 勾承君 

机构地区：[1]西南科技大学信息工程学院,四川绵阳621000 [2]四川泰裕机电有限公司,四川德阳618508

出　　处：《电测与仪表》2015年第3期107-111,共5页Electrical Measurement & Instrumentation

基　　金：四川省产业研究与开发基金(2013159)

摘　　要：介绍一种基于FPGA的数字磁通计的设计,利用FPGA控制同步采样ADC以固定频率进行采样,在FPGA内部实现了数字滤波、自动校准、自动量程选择、数字积分等功能。相比于模拟磁通计,简化了仪器的操作难度,提高了系统的稳定性。实验表明,其测量值无漂移,测量精度高于0.5%。This paper introduces a design of digital fluxmeter based on FPGA. In the paper,the sequence of synchronous ADC is controlled by FPGA sampling at a fixed frequency,which can realize functions such as digital filtering,automatic calibration,automatic range selection and digital integral. Compared with analog fluxmeter,the design simplifies the operation of instrument and improves the system stability. The experiment results indicate that the accuracy of the digital fluxmeter can reach the range of less than 0. 5% with zero drift.

关 键 词：FPGA 数字磁通计 数字积分算法 NIOS-II 

分 类 号：TM933[电气工程—电力电子与电力传动]