Research On Vibration Measurement Technology And Vortex Flowmeter

With the spread of vibration test reliability in the field of product promotion, Vibration measurement applications are becoming increasingly important. But the charge amplifier connected as a vibration sensor and signal analysis of key devices is an indispensable part. Charge amplifier can be applied to Eclectics, Aerospace, Shipping and other important industry and it's also an indispensable important means of teaching and research. This paper had made a systematic exposition of the development of the charge amplifier and a detailed description of the key circuit and it also give out the corresponding circuit. As to the low-noise performance requirements of Charge amplifier, the paper introduces the charge amplifier noise analysis and the calculation method and put forward a method to reduce system noise of amplifier circuit. Against the charge amplifier is also used Vortex Flowmeter vibration measurement, this paper has discussed some ways to enhance Vortex flowmeter measurement accuracy and bring up Vortex flowmeter signal ZOOM-FFT spectrum analysis method.Papers main contents of the chapters are outlined below:The first chapter outlines the main vibration detection technology development background, the application of the charge amplifier in the Vibration measurement, describes the development state of the type of vibration instrumentation Vortex Flowmeter and brings out the main content of this paper.The second chapter discusses the development of the vibration measurement circuit, makes a detailed presentation to the key circuit and give out an actual circuit, and makes measurement and analysis to the noise of charge amplifier.The third chapter presents the vibration detection technology in the application to Vortex Flowmeter in which the Vortex vibration frequency detection by Charge amplifier is the most important.The fourth chapter describes the Application of spectral analysis method in the vortex flowmeters in which mostly introduces how to Increase the frequency resolving power with ZOOM-FFT.The fifth chapter is a brief summary to the full text and forecast the future research in this field.