毕业设计（论文）-基于AT89C51单片机的水塔水位控制系统设计_精品.doc

摘要 温度测量与控制在社会的发展而广泛的使用。利用单片机技术的温度测控系统以其体积小，可靠性高而被广泛采用。本文对该测控系统进行了分析设计。 首先，设计针对系统所使用的单片机的性能和发展情况做了简单介绍；对系统使用的模/数转换芯片ADC0809做了性能方面的简单说明；同时对测量温度在-55～150之间的集成型恒流测温元件AD590做了介绍。 其次，论文重点对测控硬件、软件的组成进行了分项、模块化逐步分析设计。对各部分的电路一一进行了介绍，最终实现了该系统的硬件电路。绘制了电路原理图，绘制了印制电路板图，并将制成的线路板焊接上了元件，完成了硬件调试。根据硬件的设计和测控系统所要实现的功能，本设计对软件也进行了一一设计，并经过反复的模拟运行、调试，修改简化了软件系统，最后形成了一套完整的程序系统。 关键词： 单片机、ADC0809、AD590、软件系统、硬件系统 Abstract The temperature survey and the control in profession and so on industry, agriculture, national defense has the widespread application. Using monolithic integrated circuit technology temperature observation and control system by its volume small, the reliability is high but is widely used. This article has carried on the analysis design to this observation and control system. First, this article the monolithic integrated circuit performance and the development situation which used in view of the system has made the simple introduction; To system use mold/Number transformation chip ADC0809 has given the performance aspect simple explanation; Meanwhile to surveyed the temperature to make the introduction in -55 ～150 between integration constant flow temperature element AD590. Next, this article key to observe and controlled the hardware, the software composition carries on the sub-item, the modulation has analyzed the design gradually. 11 has carried on the introduction to each part of electric circuits, finally has realized this system hardware electric circuit. Has drawn up the electric circuit schematic diagram, has drawn up the printed circuit board chart, and will make in the line board welding the part, has completed the hardware debugging. Function must realize which according to the hardware design and the observation and control system, this design has also carried on 11 designs to the software, and after the repeatedly simulation run, the debugging, the revision simplified the software system, finally has formed set of complete software. Key words： MCU, ADC08