LXI信号发生器软件设计与实现

发布时间：2018-05-13 17:34

  本文选题：信号发生器 + 监控软件　； 参考：《电子科技大学》2014年硕士论文

【摘要】：信号发生器又称为信号源,用于产生被测电路所需特定参数的电测试信号,是电子测量领域中被广泛应用的重要电子仪器之一。随着计算机技术和微电子行业的快速发展,直接数字频率合成DDS技术成为高性能数字信号发生器设计的主要趋势,具有精度高、任意可调制波形等特点。在网络技术的持续高速发展下,基于LAN总线技术的LXI仪器也得到大力发展和应用。本论文的研究内容是基于DSP BF531处理器和DDS技术的C类LXI数字信号发生器的设计。在本论文中,LXI信号发生器的设计主要由信号发生器固件和LXI通信接口模块两个部分组成。论文从软件设计角度,详细阐述了LXI信号发生器的软件设计与实现过程。信号发生器固件程序包括BF531芯片的基本配置、通信接口,人机交互界面的逻辑设计,串口通信和SPI口仪器按键控制,同时设计基于CPLD EPM240T100C5的键盘板。LXI通信接口模块,硬件平台是基于嵌入式处理器的DM9000芯片,软件部分通过在固件程序中移植嵌入式uip协议栈,并在应用层开发程序实现,包括VXI-11、ONC/RPC和PORTMAP协议的移植、SCPI命令解释器、Webserver的搭建和CGI的开发等等。在论文的最后,对信号发生器的功能进行了系统性的测试。本论文对仪器软件设计的主要成果进行总结,为相关研究、功能扩展提出了设想和计划。
[Abstract]:Signal generator, also called signal source, is one of the important electronic instruments widely used in the field of electronic measurement, which is used to generate electrical test signal with specific parameters required by the circuit under test. With the rapid development of computer technology and microelectronics industry, direct digital frequency synthesizer (DDS) technology has become the main trend of high performance digital signal generator design, with the characteristics of high precision, arbitrary modulation waveform and so on. With the continuous rapid development of network technology, LXI instruments based on LAN bus technology have also been developed and applied. The research content of this thesis is the design of C class LXI digital signal generator based on DSP BF531 processor and DDS technology. In this paper, the design of LXI signal generator is mainly composed of two parts: the firmware of signal generator and the LXI communication interface module. From the point of view of software design, the software design and implementation of LXI signal generator are described in detail. The firmware program of the signal generator includes the basic configuration of the BF531 chip, the communication interface, the logic design of the man-machine interface, the serial port communication and the key control of the SPI port instrument. At the same time, the keyboard board. LXI communication interface module based on CPLD EPM240T100C5 is designed. The hardware platform is DM9000 chip based on embedded processor. The software is realized by transplanting embedded uip protocol stack in firmware and developing program in application layer. Including VXI-11ONC / RPC and PORTMAP protocol porting SCPI command interpreter to build the Web server and develop CGI and so on. At the end of the paper, the function of signal generator is tested systematically. This paper summarizes the main achievements of instrument software design, and puts forward some ideas and plans for related research and function expansion.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM935
，

本文编号：1884145