| 基于IPC控制系统的实时高精度测频方法 |
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| 引用本文： | 张予生,王明武,王永华.基于IPC控制系统的实时高精度测频方法[J].微计算机信息,2007,23(10):108-109. |
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| 作者姓名： | 张予生 王明武 王永华 |
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| 作者单位： | 1. 450002,河南郑州,州轻工业学院后勤保障处
2. 450002,河南州,州轻工业学院,河南省信息化电器重点实验室 |
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| 摘 要： | 针对IPC控制系统中流量计高精度的实时测频问题,分析了PCI-1712L和KPCI-714的测频原理和实际测试结果;通过PLC高速计数功能完成了对流量计的测频,实现了实时流量的高精度测量;利用平均值滤波算法修正了误差,使得精度进一步提高。该方法测到的频率精度达到0.4%,采集速度为20次/秒。
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| 关 键 词： | IPC控制系统 流量计频率测定 PLC高速计数通道 |
| 文章编号： | 1008-0570(2007)04-1-0108-02 |
| 修稿时间： | 2007年2月13日 |
A real-time frequency measuring method with high accuracy based on IPC control system |
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| ZHANG YUSHENG,WANG MINGWU,WANG YONGHUA.A real-time frequency measuring method with high accuracy based on IPC control system[J].Control & Automation,2007,23(10):108-109. |
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| Authors: | ZHANG YUSHENG WANG MINGWU WANG YONGHUA |
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| Affiliation: | ZHANG YUSHENG WANG MINGWU WANG YONGHUA |
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| Abstract: | To solve real-time frequency measuring problem of flow meter with high accuracy in the IPC control system, analyzed the frequency measuring principium and actual results of PCI-1712L and KPCI-714. By using high speed counter of PLC, measured the frequency of flow meter at high accuracy. Adopted the average filtering algorithm to modify error and improve data precision. The precision of frequency parameter can reach 0.4 % and the sampling speed can reach to 20 times/sec by using this method. |
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| Keywords: | PCI-1712L KPCI-7414 |
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