| 基于FFT与STM32 MCU的涡街信号处理系统设计 |
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| 引用本文： | 蒋莉,胡建人,秦会斌.基于FFT与STM32 MCU的涡街信号处理系统设计[J].杭州电子科技大学学报,2010,30(5):5-8. |
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| 作者姓名： | 蒋莉 胡建人 秦会斌 |
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| 作者单位： | 杭州电子科技大学电子信息学院; |
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| 基金项目： | 浙江省自然科学基金资助项目 |
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| 摘 要： | 该文针对涡街传感器输出信号的特点和低流速时涡街流量计测量精度受限的问题,设计了一种基于STM32芯片的数字涡街信号处理方法与系统,将涡街传感器输出信号通过低噪声前置放大电路,可采集低流速下的涡街信号,再通过频谱分析法FFT准确计算出涡街信号频率,有效提高了测量精度。
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| 关 键 词： | 涡街流量计 测量精度 频谱分析 傅里叶变换 |
Design of Vortex Signal Processing System Based on FFT & STM32 MCU |
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| JIANG Li,HU Jian-ren,QIN Hui-bin.Design of Vortex Signal Processing System Based on FFT & STM32 MCU[J].Journal of Hangzhou Dianzi University,2010,30(5):5-8. |
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| Authors: | JIANG Li HU Jian-ren QIN Hui-bin |
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| Affiliation: | JIANG Li,HU Jian-ren,QIN Hui-bin(School of Electronics Information,Hangzhou Dianzi University,Hangzhou Zhejiang 310018,China) |
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| Abstract: | Vortex flow meter based on vibration is widely used to measure gas or liquid flow.It is designed a digital vortex signal processing system and method based on STM32 MCU,aimed at signal characteristics and measuring accuracy by vortex sensor at low-flow.The weak sensor output signal amplifies by preamplifier.It calculates accurately by the spectral analysis method FFT.It gets base frequency from the signal,and filters other frequency noise or interrupt,especial very slowly flow.It improves the measurement ac... |
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| Keywords: | vortex flow meter measure accuracy spectral analysis FFT |
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