作者：王彦东, 邵英, 王黎明, 肖雄波

作者单位：海军工程大学电气与信息工程学院, 湖北 武汉 430033

关键词：仪器仪表技术; 双同步测频法; FPGA; 频率

摘要：

为提高频率测试的精度和智能化程度,减少测试时间,提出一种基于FPGA的依据待测信号频率智能选择测试方案的频率测量方法。利用控制时钟和待测信号通过门电路延时产生的脉冲触发闸门信号,对待测信号频率精确测量进行理论分析、电路仿真以及FPGA硬件实现。仿真和测试结果表明:该方法能够依据待测信号自适应选择测试方案,提高测试精度,降低时间,很大程度上减少人工参与。

Design of intelligent precision frequency measurement based on FPGA

WANG Yan-dong, SHAO Ying, WANG Li-ming, XIAO Xiong-bo

Institute of Electrical and Information Engineering, Navy University of Engineering, Wuhan 430033, China

Abstract: For improving the accuracy and intellectualization of the frequency and minimizing test time, a method to measure the frequency based on the signal to be measured which can choose the testing program intelligently was proposed. By controlling the signal generated by the clock and the test signal through the gate delay combining FPGA and gates 74LS series, the frequency of the signal to be measured can conduct theoretical analysis, circuit simulation and FPGA hardware implementation. Simulation and test results show that this method can solve the problem of measurement accuracy and adaptively select testing program based on the measured signal for improving precision, reducing the time requirements, reducing the labor involved in largely.

Keywords: instrumentation technology; dual synchronous; FPGA; frequency

2014, 40(4): 119-123  收稿日期: 2013-7-29;收到修改稿日期: 2013-9-24

基金项目: 

作者简介: 王彦东(1990-),男,河南西华县人,硕士研究生,专业方向为电能质量检测。

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