基于OMAP的光纤陀螺导航计算机硬件平台研究与设计

发布时间：2018-06-26 18:10

本文选题：光纤陀螺 + OMAP-L137　；参考：《哈尔滨工程大学》2014年硕士论文

【摘要】：随着光纤捷联系统在惯性导航应用领域的地位逐渐升高,其配套的导航计算机也向着多功能化、小型化和更加人性化的趋势发展。导航计算机的功能也不仅限于完成复杂的导航解算,还涉及系统控制,信息存储,冗余通信等多元化的功能。其内部结构日趋复杂,对核心处理器的运算能力和系统控制能力的要求也不断提高。因此,本文提出以双核异构芯片OMAP-L137为核心处理器的光纤陀螺导航计算机硬件平台的研究与设计方案。OMAP-L137为TI公司推出的一款低功耗双核异构处理器,具有ARM与浮点DSP的双重特性,可进行基于达芬奇构架的软件开发。处理器ARM内核为ARM926ej-s,可以利用其进行嵌入式Linux系统的移植,完成导航计算机的系统控制、外部通信、数据存储及显示等任务。DSP内核为TMS320C6747,是一款高性能定点/浮点处理器内核,可以利用其接收IMU数据并实现光纤捷联系统的导航解算。在此思路下,本课题首先根据光纤捷联系统对导航计算机的功能要求进行硬件平台的电路原理图设计及PCB设计,并完成硬件电路板的焊接工作。其次,进行导航计算机系统的软件设计。利用FPGA设计了基于VerilogHDL语言的通信程序。在CCS下利用C语言设计了 DSP核与ARM核各自的应用程序,实现了处理器双核的启动及数据交换。最后,通过搭建交叉开发环境,完成了系统基于ARM端的U-Boot及嵌入式Linux内核的设计和移植工作,并对导航计算机硬件平台的各个接口外设的基本功能以及与FPGA之间的通信功能进行测试和验证。
[Abstract]:With the increasing status of fiber-optic strapdown system in inertial navigation application field, its supporting navigation computer is developing towards multifunction, miniaturization and humanization. The function of navigation computer is not only limited to the complicated navigation solution, but also involves system control, information storage, redundant communication and so on. Its internal structure is becoming more and more complex, and the requirements for the computing power and system control ability of the core processor are also increasing. Therefore, this paper presents the research and design of the hardware platform of fog navigation computer based on OMAP-L137. OMAP-L137 is a low power dual-core heterogeneous processor developed by TI, which has the dual characteristics of arm and floating-point DSP. Software development based on da Vinci architecture can be carried out. Arm kernel is ARM926ej-s. it can be used to transplant embedded Linux system, complete system control of navigation computer, external communication, data storage and display. DSP kernel is TMS320C6747. it is a high performance fixed-point / floating-point processor kernel. It can be used to receive IMU data and realize navigation solution of fiber-optic strapdown system. According to the functional requirements of the fiber-optic strapdown system, the circuit schematic design and PCB design of the hardware platform are carried out, and the welding work of the hardware circuit board is completed. Secondly, the software design of navigation computer system is carried out. The communication program based on Verilog HDL is designed with FPGA. The application program of DSP core and arm core is designed by using C language under CCS. The dual core of processor is started and the data exchange is realized. Finally, the design and transplantation of U-Boot and embedded Linux kernel based on arm are completed by building cross-development environment. The basic functions of interface peripherals and the communication between FPGA and navigation computer hardware platform are tested and verified.
【学位授予单位】：哈尔滨工程大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN965.8

【参考文献】