| 基于DSP的电能质量参数高速采集系统 |
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| 引用本文： | 李宏成,张全法,李磊,王庆峰. 基于DSP的电能质量参数高速采集系统[J]. 仪表技术与传感器, 2011, 0(10) |
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| 作者姓名： | 李宏成 张全法 李磊 王庆峰 |
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| 作者单位： | 郑州大学物理工程学院,河南郑州,450001 |
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| 摘 要： | 针对传统的电能质量参数采集系统处理速度慢、精度低等问题,设计了基于定点DSP芯片ADSP - BF548和高精度模数转换芯片AD7656的电能质量参数高速采集系统.系统采用锁相倍频技术实现同步采样,DSP通过增强型并行外围接口( EPPI)以DMA的方式对AD7656的转换数据进行16位高速并行采集.同时运用DSP芯片通用定时器的“捕捉”工作模式,实现对电网频率的测量.测试表明,该系统精度高,数据处理速度快,具有很高的实时性.
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| 关 键 词： | 电能质量 锁相倍频 数据采集 DSP AD7656 |
High-speed Power Quality Parameter Acquisition System Based on DSP |
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| LI Hong-cheng,ZHANG Quan-fa,LI Lei,WANG Qing-feng. High-speed Power Quality Parameter Acquisition System Based on DSP[J]. Instrument Technique and Sensor, 2011, 0(10) |
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| Authors: | LI Hong-cheng ZHANG Quan-fa LI Lei WANG Qing-feng |
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| Affiliation: | LI Hong-cheng,ZHANG Quan-fa,LI Lei,WANG Qing-feng(School of Physics and Engineering,Zhengzhou University,Zhengzhou 450001,China) |
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| Abstract: | To solve the problem that the traditional power quality parameter acquisition system's slow processing speed,low precision,this paper designed a high-speed power quality parameter acquisition system based on fixed-point DSP chip ADSP-BF548 and high-precision A/D conversion chip AD7656.The system used the phase-lock frequency multiplication technology to achieve synchronous sampling,and the data converted by AD7656 was collected by the DSP through EPPI in the DMA mode.The actual grid frequency achieves high-... |
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| Keywords: | power quality phase-lock frequency multiplication data acquisition DSP AD7656 |
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