抗振型低功耗数字涡街流量计研制

doi:10.3969/j.issn.1000-1158.2013.05.08

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摘要针对双传感器涡街流量计,提出采用频域相减与频率方差计算相结合的方法来处理涡街流量传感器输出信号,并研制基于低功耗单片机为核心的处理系统,取得很好的实验效果。在涡街流量信号功率小于振动噪声功率的情况下,抗振型低功耗数字涡街流量计仍然能够准确地测量流量的频率,并且低功耗、两线制工作。

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	徐科军
	方敏
	罗清林
	王刚
	康一波
	石磊

关键词 ：计量学, 涡街流量计, 双传感器, 振动噪声, 频率方差, 低功耗

Abstract：An algorithm combing frequency-domain substation with frequency-variance calculation is proposed for the vortex flowmeter with two sensors. A signal processing system is developed with super-low power MCU, and a good experimental results are obtained. This type of flowmeter can measure the frequency of the flow-rate accurately even if the power of vortex flow signal is less than that of vibration noise, and can work in the mode of low-power and two-wire.

Key words： Metrology Vortex flowmeter Two piezoelectric sensors Vibration noise Frequency-variance Low power

基金资助:国家自然科学基金(61074164)

作者简介: 徐科军(1956-),男,江苏无锡人,合肥工业大学教授、博士生导师,主要从事传感器技术、自动化仪表和数字信号处理研究。dsplab@hfut.edu.cn

引用本文:

徐科军, 方敏, 罗清林, 王刚, 康一波, 石磊. 抗振型低功耗数字涡街流量计研制[J]. 计量学报, 2013, 34(5): 435-440.
XU Ke-jun, FANG Min, LUO Qing-lin, WANG Gang, KANG Yi-bo, SHI Lei. Development of Anti-vibration-type Vortex Flowmeter with Low Power and Digital Processing. Acta Metrologica Sinica, 2013, 34(5): 435-440.

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