Design And Implementation Of Wave-height Data Acquisition System Based On LabVIEW

In order to make more efficient and rational use of China's rich marine resources,the state has been constantly encouraging and guiding the development of marine disciplines in recent years.Especially after the national marine strategy put forward,China's marine development-related engineering technology is to enter the fast lane of development.In the process of ocean development,it is very important to analyze the influencing factors such as wave,wind and flow in the marine environment.And the need to analyze these factors must first obtain their specific data.In order to solve the problem of wave data acquisition problem,this paper designed and developed a set of data acquisition system based on Lab VIEW.This part of the system consists of hardware part and software part.The hardware part mainly includes wave height sensor and analog voltage signal processing circuit.The software part mainly includes four modules: data acquisition,data playback,data storage and instrument calibration.In this paper,the background of the research,the data acquisition technology and the virtual instrument technology are briefly introduced.The future development trend of the data acquisition and the advantages of the virtual instrument technology are analyzed.Then we introduce the overall design of this data acquisition system based on LabVIEW.And then introduced the various parts of the specific design and working principle of the system from the hardware and software aspects.Not only Hardware aspect of the wave height sensor technology and circuit design principles are introduced,but also the voltage amplification circuit and specific filter circuit,while the PCB board design and production also made a more detailed description.The software aspect mainly introduces the Lab VIEW development environment,the software controled data acquisition card and the specific programming process of several different function modules.Finally,rely on the existing resources of the laboratory we tested our data acquisition system.Through the collected wave data curve,we can see that the system achieves the original design goal.