LI Xiao-jing. Extending measured value of vortex flowmeter at lower velocity by using quadratic cross correlation algorthm[J]. 2008, (1): 25-26+29. DOI: 10.13873/j.1000-97872008.01.004.
The filter principle and the implement method of vortex flowmeter signals with serious noises are introduced by using quadratic cross correlation algorithm.The signal and noise conditions of vortex flowmeter at the lower velocity are analyzied
and quadratic cross correlation algorithm is applied to digital filtering.The specific computation method and the rule of choosing a value to several major parameters are given.The good results are achieved in practical application.