A Research Of Data Acquisition System And Automatic First Breaks Pick-up Based On ARM

With the development of computer technology and semiconductor technology,the embedded system becomes one of the focus in IT industry,and emerges a huge market demand.The embedded processors and embedded operating system are the core technology of The Embedded Systems.Because of its high speed,low power consumption,low-cost,strong function,unique 16/32 dual-instruction set and many other high-performance,ARM(Advanced RISC Machines)company's 32-bit RISC processor has become the first processor in mobile communications,handheld computing,Multimedia digital consumer and other embedded solutions.In various of embedded operating systems,Linux has the advantage of clear structure and open source code,so it has been widely applied in the embedded systems field such as data acquisition,instruments,control system,handheld devices and so on.In the study of seismic wave field,due to preliminary wave is traceable and easy to identify,preliminary wave information occupies very important position in the field of seismic exploration.The pickup of preliminary wave first arrival time is the basis of seismic digital signal processing,especially in Shallow refraction wave exploration and Tomographic imaging.The accuracy of preliminary wave first arrival time's pick up affects the results of subsurface structure directly.The picking up artificial preliminary wave takes up a large part of time in data processing,so the first arrival automatically pick up method is very necessary.The design of this project is a data acquisition and analysis platform based on S5PV210 which based on Cortex-A8.The hardware part of the platform is an ARM development board-X210V3 S manufactured by JIUDING and AD converter PCF8591.The system and the upper application of the platform are based on embedded Linux kernel 2.6.35.7 and embedded Qt5.6.0 technology.The preprocessing part of geophysical exploration is the research and realization of the energy ratio method in the characteristics of earthquake window characteristics.The software and hardware completed in the project are relatively stable during the testing process,which has a certain reference effect on the development of geophysical data acquisition platform.