Research On SFT Algorithm Of Data Acquisition System

Construction of oilfield production of things is an important direction of information construction in oil field,in the current environment of information technology fields,domestic and foreign major oil companies have launched a new intelligent acquisition system to achieve energy management,for rod pumped wells to collect real-time data communication requirements also continues to improve,how to ensure the data real-time collection and transmission,how to reduce the rate in the process of communication,for oil system of information management,operation and decision has important significance.SFT(sparse Fourier transform)algorithm is through a series of steps to simplify the signal spectrum calculation process,first by certain rules will be long point DFT into short point DFT and spectral reconstruction finally constructed a set of time complexity and the length of the signal into sub line of the algorithm for real-time analysis of well logging data and lossy compression and transmission is of great significance.The main work of this paper is the design of SFT algorithm simulation and data acquisition hardware system.In the implementation of SFT algorithm,a simulation,first some theoretical knowledge of Fourier transform,elaborate,of SFT need theoretical part slightly profile and puts forward theoretical framework of the overall SFT,and design process and some key techniques,a summary to the reconstruction method.In the VC debugging environment to achieve the conversion of C code to get the correct results.In the design of hardware system,based on the existing F2833 x TI high performance floating-point microcontroller TMS320C28346 chip as the core processor,through the ADC acquisition of electrical parameters and Zigbee wireless network acquisition acceleration data.SFT algorithm is used to deal with the data of the collected data and the transmission of lossy compression is carried out in real time.The results of this study,in theory,the sparse Fourier transform algorithm were systematically and conversion for the C language code,engineering application,SFT hardware platform transplantation using SFT of electrical parameter spectrum transform and lossy compression transmission of optimization theory,effectively reduces the computation and improves the efficiency of data communication,and provided strong support for the oilfield electrical parameters real-time processing and transmission.