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本科生毕业论文(设计)
题目:微生物燃料电池数据采集系统设计与实现
学院电子信息工程学院
学科门类工学
专业电气工程及其自动化
学号 2009445023
姓名师学勇
指导教师候顺艳
2013年5月16日
微生物燃料电池数据采集系统设计与实现
摘要
微生物燃料电池是一种重要的清洁能源,在阳极厌氧环境下,有机物经过微生物的分解释放出电子和质子,电子在生物组分和阳极之间流动,并通过外电路流动到阴极形成电流。分析微生物产电的效能时, 需要实时观测微生物电池的输出电压, 并分析电池的输出电压变化曲线,而这个是一个非常枯燥耗时的工作,因此提出设计一个装置来自动地获取电池的输出电压。本文基于单片机的数据采集系统的硬件设计,数据采集系统是连接模拟域与计算机之间的桥梁,它在实际应用中有很重要的作用。
本设计的硬件部分以单片机STC89C52为核心,还有模数转换模块、显示模块、串口通信模块、电源模块等。微生物燃料电池的输出电压通过模数转换器件ADC0809进行模数装换,从而实现采集电压信号由模拟量到数字量的转换,然后单片机接受数据并对其进行处理,将测量得到的电压值用三位数码管显示,最后该系统根据上位机的控制信号将电压值通过MAX232发送到上位机进行存储、处理。
关键词:STC89C51;ADC0809;数据采集;串口通信
The Design and Implementation of Data Acquisition System of Microbial Fuel Cell
ABSTRACT
Microbial fuel cell is an important clean energy,in the anode anaerobic conditions,microbial position anic matter by releasing electrons and protons,electrons flow between the ponents and the anode,and through the external circuit to the cathode current flow. Analysis of microbial electrogenesis performance,we need to real-time observe the output voltage of microbial cells,and analyze the output voltage curve of is very boring and time-consuming,so we proposed a design of an apparatus to automatically derive the output voltage of cell.
This paper introduces the hardware design of data acquisition system based on acquisition system is a bridge between the analog domain puter ,it has a very important role in practical application. The hardware part of the design of the MCU as the core,in addition to the analog-to-digital conversion module,display module,munication module etc.. Voltage of the microbial fuel cell transforms through a digital-to-analog converter ADC0809,realize the acquisition of signal from the analog to digital the MCU for data processing,and the voltage measured using digital tube display. Finally the system according to the control signal of PC will voltage value is sent to the puter by MAX232 for storage,processing.
Key words:STC89C51;AD