基于单片机的波形记录器_毕业设计论文2012年6月.docVIP

毕 业 设 计（论 文） 题目：单片机波形记录器 Title: Chip waveform recorder 学生姓名: 专 业: 学 号: 指导教师: 2012年6月 GRADUATION DESIGN (DISSERTATIONS) English Title: Chip waveform recorder Name: FuKailiang Student number: Teacher: LiHongjun Professional: Electronic June In 2012摘 要 波形记录在教学科研和地质勘测等方面有着广泛的应用。波形的记录也方便我们后期对图形分析运算，频谱分析，曲线相关性分析等操作。路、控制电路输出电路 The waveform recording has been widely used in the teaching scientific research, the geological research and so on. Waveform recording is also convenient for our later on graphical analysis and calculation, spectrum analysis, correlation analysis and other operation curve. Universal electronic oscilloscope low prices, we are equipped with conventional instruments, but does not have the signal recording function, therefore, to design a signal waveform recorder, which can combine with general electronic oscilloscope, to observe the non repetitive signal waveform, is of great practical significance. This paper is based on the single chip microcomputer and the design of the waveform recorder, waveform storage system equipped with a A/D converter, data memory, using bipolar output prosperity D/A converter device. The system has eight input channels, using partition stored waveform. At the same time to the external data memory configured to drop the electricity protection circuit, can be long-term preservation of data. The design of using top-down method, the system has four modules: input circuit, keyboard and display circuit, control circuit and the storage circuit and an output circuit. The design enables the waveform record and electronic together well, has the very strong practical. Keywords: Single chip microcomputer; Waveform recording; Practicability  目 录 摘要 Ⅰ ABSTRACT Ⅱ 第1章 绪 论 1 1.1 课题背景与研究现状 1 1.2 课题的意义 2 第2章 系统总体设计 3 2.1 系统功能分析 3 2.2 总体设计思想 4 第3章 系统的硬件设计 5 3.1 输入电路的设计 5 3.1.1 A/D转换器的选择 5 3.1.2 缓冲