【作者】 韩锋；

【导师】 马英杰；

【作者基本信息】 成都理工大学 ， 核资源与核勘查工程， 2008， 硕士

【摘要】 核地球物理勘探是集核探测技术、电子技术、计算机技术为一体,能够快速、准确地分析出核素的相关信息及参数的一门综合性很强的学科。目前已广泛应用于铀矿勘探、地质填图、油气勘测以及寻找各种金属和非金属矿产等诸多领域。其中核地球物理数据的采集和处理是核地球物理勘探研究的重要课题之一,它将直接对测量结果产生影响。本系统设计是架构在基于ARM7TDMI核的16/32位处理器S3C44BOX的硬件基础上,移植了嵌入式μCLinux操作系统、JFFS2文件系统、以及MiniGUI图形开发库。通过利用S3C44BOX处理器快速的运算速度、丰富的外围设备和嵌入式μCLinux操作系统及其丰富的软件资源,编写了系统引导代码、集成了LCD、MCA硬件设备的驱动程序、开发了GPS、GPRS应用程序。本论文研究成果主要有:1.研制了基于高端的16/32位ARM7TDMI处理器S3C44BOX为控制核心、外围电路带有LCD显示以及时钟和存储电路的核数据采集系统。该系统能够稳定运行在60MHz频率,无需上位机,用户就可与之进行交互工作,能够独立完成能谱数据的采集、分析、存储等功能。系统具有低功耗、小型化、高性价比等特点。2.实现了嵌入式μCLinux操作系统在采集系统上的移植。随着嵌入式系统的迅速发展,嵌入式操作系统在核仪器研制中的应用不仅能够提高系统的稳定性,而且通过充分利用Linux丰富的软件资源,能够快速的完成系统的定制和开发,构建复杂的软件系统。3.实现了基于μCLinux的JFFS2嵌入式文件系统的移植,安全可靠的管理了系统引导代码、μCLinux操作系统内核映象文件、谱处理程序和数据等。4.初步实现了GPS定位、GPRS数据无线传输的功能。更多还原

【Abstract】 Nuclear geophysical perambulation is a comprehensiveness subject,which involving nuclear detection technology,electronic technology and computer,can analyze the relevance information and parameter of nuclide accurately and fleetly.Presently,it has applied to the uranium mine perambulation,geological mapping, oil gas perambulation fields as well as seeking various metal and metalloid mineral and etc. Among them, collecting and processing nuclear geophysics data is one of important subjects of nuclear geophysics perambulation study. It will be having direct impact to accuracy and feasibility measuring result.The design of system,on the basis of S3C44B0X 16/32-bit RISC microprocessor with its ARM7TDMI core,migrates embedded uCLinux OS,JFFS2 file-system,and primarily migrates MiniGUI libraray.With the microprocessor rapid computing ability and the complete set of common system peripherals, uCLinux OS and abundant software resources based on Linux, introductory code of system are compiled,drivers of LCD’s and MCA’s hardware equipment are compiled and integrated,application of GPS and GPRS are developed.There are some advantages in the research result of this paper, as follows:1. The acquisition system of Nuclear data has the 16/32-bit ARM7TDMI as the controlling core, including LCD display, clock and memory circuit.The system can stably work at 60MHz,could control it to accomplish the process of data acquisition, calculating and analyse without computer. The system has some features, such as low power, miniaturization, high proportion of quality and price and etc.2. The design realized the migration of the embeddedμCLinux OS. With the development of embedded OS, the migration ofμCLinux OS and the aboundance software resources based on it.This can not only inhance the stablitiy of the system but also can rapidly achieve the developmnent of the nuclear instrument and a complitable spectra software.3. The design realizes the migration of jffs2 file system ported onμCLinux OS, safely and reliably manages bootloader program of the system, kernel image file of theμCLinux OS, the program and data of gamma spectra software.4. This design primarily realizes the function of GPS real-time orientation and GPRS data wireless transmission.更多还原