|
|
Development of Anti-vibration-type Vortex Flowmeter with Low Power and Digital Processing |
XU Ke-jun1,2, FANG Min1, LUO Qing-lin1, WANG Gang3, KANG Yi-bo3, SHI Lei3 |
1School of Electrical and Automation Engineering, Hefei University of Technology, Hefei, Anhui 230009, China;
2Engineering Technology Research Center of Industrial Automation, Hefei, Anhui 230009, China;
3Chongqing Chuanyi Automation Co. Ltd., Chongqing 401121, China |
|
|
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.
|
|
|
|
|
[1] Pankanin Grzegorz L. The vortex flowmeter: various methods〖JP〗 of investigating phenomena [J].Measurement Science and Technology, 2005,16:R1-R16.
[2] Amdadi-Echendu J E, Zhu H J. Signal analysis applied to vortex flowmeters [J]. IEEE Trans on Instrumentation and Measurement,1992,41(6): 1001-1004.
[3] Xu K J, Wang A M. Adaptive Notch Filter-based Signal Processing Method and System for Vortex Flowmeter [J].Review of Scientific Instruments,2001, 72(4): 2219-2220.
[4] Clarke D W, Ghaoud T. A dual phase-locked loop for vortex flow metering [J]. Flow Measurement and Instrumentation,2003,14:1-11.
[5] Xu K J, Huang Y ZH, Lü X H, et al. Power-spectrum-analysis-based Signal Processing System for Vortex Flowmeters [J].IEEE Trans on Instrumentation and Measurement,2006, 55(3): 1006-1011.
[6] Schlatter Gerald L, Willian Douglas Barrett, Waers John F, et al. Signal processing method and apparatus for flowmeters [P]. International Patent, WO1990004230, 1990-04-19.
[7] 徐科军,朱志海. 抗强固定干扰的涡街流量计系统设计及信号处理方法研究 [J].计量学报,2011,32(6):505-510.
[8] 徐科军,刘三山. 基于数字频谱与模拟带通滤波组的两线制涡街流量计 [J].计量学报, 2011, 32(1): 25-30.
[9] 方敏,王沁,徐科军. 一种新型的电池供电的数字流体振荡式流量计 [J].计量学报, 2011, 32(6):511-516.
[10] 方敏,徐科军,刘三山. 低功耗数字涡街流量计硬件研制中的关键技术 [J]. 自动化仪表, 2011, 32(1): 26-29.
[11] 徐科军,罗清林. 涡街流量传感器信号的幅值和频率特征 [J].计量学报,2010, 31(6): 504-508.
[12] 罗清林,徐科军,刘三山. 基于快速傅里叶变换的低功耗两线制涡街流量计 [J].电子测量与仪表学报, 2010, 24(7): 692-697.
[13] 罗清林,徐科军. 基于频率特征的单涡街流量传感器抗强干扰信号处理方法 [J]. 仪器仪表学报, 2009, 30(6A): 339-343.
[14] Masanori Hondoh, Masami Wada, Tetsuo Andoh, et al. A vortex flowmeter with spectral analysis signal processing [C]// SIcon’01 Sensors for Industry Conference, Rosemont, Illinois,USA,2001:35-40.
[15] 罗清林,徐科军,朱志海.基于双传感器的抗强干扰涡街信号处理方法 [J]. 仪器仪表学报,2009,30(6): 354-359. |
|
|
|