The ARM Of Lans Seismic Data Acquisition Software System Design

At present, the mainstream seismometers host development platform takes microcontroller, PC or industrial control computer (industrial PC) primarily . Such as DZQ48 instrument of high resolution seismographs production by Chongqing seismic instrument plant, although data processing industrial computer photoelectricity calculagraph ability strong, but their large size, power consumption is high, give a field work any inconvenience . Meanwhile mainstream seismometers host use is the Windows XP operating system, Windows XP, aiming at providing service more frequency is not too high industrial PC opportunity, and increase reduced host performance system power consumption, Windows XP is a non real-time operating system, to the earthquake data collection of real-time any inconvenience . Therefore, this paper based on the above several development platform and Windows XP operating system defects is proposed based on ARM development of lans seismic data acquisition software system designed to improve and enhance the comprehensive performance of host a seismograph.S3C2440 is samsung launched one of the ARM920T processor architecture based on low power consumption and high performance embedded SoC 400MHz processor, tiptop 533MHz, widely applied to PDA, portable media players, satellite navigators and other multimedia terminal. Based on S3C2440 and Windows CE operating system provides services comparison, and according to the actual streamline demand services tailored, can completely meet the host of performance requirements. A seismograph on the design of the program, this paper use is Visual Studio 2008, it is a widely used program development platform, with flexible program mode and rich underlying operating method, is realizing complex, efficient human-computer exchange interface platform strong tool.This paper by analyzing the seismic data format, combined with the particularity of Windows CE operating system, the software of proper treatment realized the fast show seismic wave. In order to meet the intelligent and humanized system software, software integration operation requirements with the optional stop frequency filters (low-pass,high-pass filter, trapped waves) and spectral analysis, and other functions .Thesis mainly made the following several innovations: developed Windows CE underlying driver (SPI, IIC) relevant procedure; the collected seismic data of converted to a common SEG - 2 file format realized the earthquake data reading, and accurately seismic wave; dynamic display data preprocessing of earthquake is analyzed, including FIR digital filter and spectrum analysis, and in the light of FIR digital filtering compiled the relevant procedure; developed based on Windows CE operating system collection control, collection, transmission, processing for the integration of seismic data acquisition control software.