1、课程设计题目：冷库单片机控制系统课程设计题目：冷库单片机控制系统 摘要摘要 随着现代工业的逐步发展，在工业生产中，温度、压力、流量和液位是种最常见的过程变 量。其中，温度是一个非常重要的过程变量。例如：在冶金工业、化工工业、电力工业、机械 工业和食品工业等许多领域，都需要对各种加热炉、热处理炉、反应炉和锅炉的温度进行控制。 然而，用常规的控制方法，潜力是有限的，难以满足较高的性能要求。利用单片机 8031 对中型 冷库进行自动化改造，使得控制系统自动化程度大大提高，温度控制精确，节约了能源，提高 了库存产品质量，降低了值班人员的工作强度。 冷库单片机控制系统，是利用单片机 8031 作为系统的
2、主控制器，测量电路中的温度反馈信 号经 A/D 变换后，送入单片机中进行处理，经过一定的算法和比较运算后，由单片机的输出来 控制继电器的动作，从而控制执行元件以达到对电阻阀和压缩机进行驱动控制，最终实现对冷 库温度的控制。 本冷库单片机控制系统的技术指标是，对冷库冷藏温度控制范围为 50.50；冷冻间： .；温度显示精度：.，控制能力：通道制冷控制，实际路控制。控制方 式：降温，快速，恒温，自然升温。软件设计须能进行人机对话和结果轮流显示。 关键词关键词： 单片机、 冷库、 自动化、 改造 Abstract Along with the gradual modern industrial de
3、vejopment,in industrial production, temperature, pressure, flow and level four is the most common process variables. Within this total, the temperature is a very important process variables. For example: in the metallurgical industry, chemical industry, power industry, machinery processing, and food
4、 processing and many other areas, the need for various furnace, heat treatment furnace, furnace and boiler temperature control. However, the use of the conventional control methods, the potential is limited, to meet higher performances. Using singlechip-8031 to carry on automational reform for the m
5、oderate model cold-storeroom, which improves the level of control-systems automation, also the precision of temperatural control,save on the resouce, enhance the quantity of product in the storeroom, boost the work-condition and decrease the labor strength of the watch. The control system of cold-st
6、oreroom singlechip, which use singlechip by way of the principal controller in the system, to measure the temperatural feedback signal, after which via A/D converser carry on tackle in singlechip, pass definite arithmetic and compare operation, make the result of singlechips export to control the act of the relay, thereby control the execute element to realize the drival control of the resistance valve and compressor, consequently realize the control of the cold-storeroom. The r
