基于单片机的超级电容（本科）毕业论文设计.docVIP

超级电容测试系统 摘 要 近年来，随着工农业的迅速发展，世界能源消耗速度急剧增加。因此，新能源和节能技术的开发已经成为世界各国科技工作者的当务之急。而机车制动能量回收系统是目前国内外节能技术方面研究的热点之一。对超级电容电压检测方案的研究和对超级电容时域模型的研究，将为超级电容的电压均衡方案和超级电容的电参数分析提供支持，从而为整个能量回收系统的控制策略提供理论依据。 本文首先对超级电容的发展及应用进行了探讨，主要针对串联超级电容组的充放电电压随时间变化的曲线设计了一个基于单片机的超级电容测试系统，可对超级电容在各种状态下的输出电压变化曲线进行测试 。该系统的设计思想是从超级电容组的各个单体电容两端采集电压信号，并通过电阻降压网络和多路开关通道切换电路将电压信号送至A/D转换器，单片机接收来自A/D转换器的数据，并通过程序控制在显示电路中显示，系统还设计了上位机部分，可对采集到的电压数据进行分析和保存等处理。系统的软硬件设计都基于模块化思想，硬件部分设计有采样电路、A/D转换电路、显示电路等，软件可分为上位机和下位机两部分，上位机基于Visual C++ 6.0设计了一个可视化界面，方便操作，下位机有A/D转换、 LED显示等子程序，各个部分相互独立，方便主程序调用，便于修改，也简化了程序设计工作。 论文设计的基于AT89C51的超级电容测试系统可对超级电容在各种情况下的电压变化情况进行测试，并收集数据送至上位机分析处理，这对于超级电容的研究和应用都具有非常重要的作用。 关键词：超级电容，电压检测，proteus ，Visual C++ Super capacitor test system ABSTRACT In recent years, with the rapid development of industry and agriculture, world energy consumption rate increased dramatically. Therefore, the development of new energy and energy-saving technology has become a science and technology workers of the worlds top priority. And locomotive braking energy recovery system at home and abroad and energy saving technology is one of the hot spot in the research,Studies of supercapacitor voltage detection scheme and on time-domain model of super capacitor, supercapacitor voltage balancing of electrical parameter analysis of programmes and Super capacitors to provide support, so as to control strategy provides the theoretical basis for the entire energy recovery system. Therefore these two studies will be throughout the core content of the paper. In this paper, first, the development and application of super capacitor is discussed, mainly in series super capacitor group of charging and discharging voltage changing with time curve based on single chip design a testing system, the super capacitor can be super capacitance in various states of the output voltage changing curves under test. Design ideas of the system of super capacitor group from every single capacitor voltage signal, and ends acquisition by resistance step-down