Title:
KALMAN FILTER-BASED VORTEX FLOWMETER ANTI-TRANSIENT SHOCK INTERFERENCE SIGNAL PROCESSING METHOD AND SYSTEM
Document Type and Number:
WIPO Patent Application WO/2017/143649
Kind Code:
A1
Abstract:
A Kalman filter-based vortex flowmeter anti-transient shock interference signal processing system, comprising a forward input conditioning circuit module, a digital signal processing module, a system output module, a power conversion circuit module, and Kalman filter-based vortex flowmeter anti-transient shock interference signal processing method software. A vortex flow signal is converted by a piezoelectric sensor into a charge signal for outputting, the outputted signal sequentially goes through a charge amplifier, a voltage amplifier, a low-pass filter, and a voltage follower, then enters an ADC unit in a MSP430F5418 microcontroller, and then is sampled and converted by the ADC into a digital signal; the digital signal is processed by the MSP430F5418 microcontroller employing a Kalman filter-based vortex flowmeter anti-transient shock interference signal processing method to obtain the frequency of the vortex flow signal, thus obtaining the flow rate of a fluid; and then, the frequency of the vortex signal and the value of the flow rate are displayed in real-time on an LCD via the output module. Also provided is the Kalman filter-based vortex flowmeter anti-transient shock interference signal processing method.
Inventors:
XU KEJUN (CN)
SHAO CHUNLI (CN)
SHU ZHANGPING (CN)
SHAO CHUNLI (CN)
SHU ZHANGPING (CN)
Application Number:
PCT/CN2016/079350
Publication Date:
August 31, 2017
Filing Date:
April 15, 2016
Export Citation:
Assignee:
UNIV HEFEI TECHNOLOGY (CN)
International Classes:
G01F1/32
Foreign References:
| CN104729591A | 2015-06-24 | |||
| CN105181031A | 2015-12-23 | |||
| JPH08226836A | 1996-09-03 | |||
| JP2003149023A | 2003-05-21 |
Attorney, Agent or Firm:
SHENZHEN KEJIN INTELLECTUAL PROPERTY OFFICE (CN)
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