粮仓温度控制系统的设计与开发.docVIP

摘 要 随着单片机技术的飞速发展，单片机在各个领域得到了广泛的应用。粮食是人类生存的必需品，温度是保存好粮食的先决条件，储存大量的粮食对稳定国民经济的发展起到至关重要的作用。粮库一般较大，测量点会很多。粮仓温度测量方法以及相应的智能控制一直是粮食保存的一个重要问题。 该系统是以基于Keil uVision4编程并通过ISIS 7进行仿真模拟。该系统利用AT89C51单片机采集了各个温度点的温度，实现温度显示、报警等功能。它以AT89C51单片机为主控制芯片，采用数字温度传感器DS18B20与DHT11实现多路温度湿度的检测，利用LCD1602液晶显示器形象直观的显示测出的温度湿度值。 软件系统采用 AT89C51单片机作为控制核心，以智能温度传感器DS1820为温度测量元件，采用多个温度传感器对多点温度进行检测，通过中断实时上传温度及湿度数据并显示在液晶屏上。并可通过通过上位机对温度上、下限设置，超过及低于其温度设定值值则会报警。 粮仓温度控制系统在实际工作运行满足系统需求及设计要求。 关键词：单片机；温度传感器；温度控制 Abstract This dissertation expounds that Along with the single chip microcomputer technology rapid development, the microcontroller obtained the widespread application in each domain. The grain is the human survival essential item，the temperature is the precondition of preserving the grain well, storing up the massive grain plays a crucial role in the development of the stable national economy. Provision room is generally big, so there will be a lot of measurement points. Grain temperature measurement method and the corresponding intelligent control of food preservation has been an important issue. The system is based on AT89C51 single-chip and numerical temperature sensor DS18B20 and DHT11 Humidity sensor, which composite the core temperature control system. This system has gathered each temperature using AT89C51 monolithic integrated circuit, which realizes functions temperature display and alarm functions and so on. It takes AT89C51 monolithic integrated circuit as main control chip, which uses digit temperature sensor DS18B20 and Humidity sensor DHT11 to realize the multi-channel temperature detections. Temperature value which determines is displayed using the LCD1602 liquid-crystal in direct-viewing demonstration. Software system USES AT89C51 as control core, based on intelligent temperature sensor DS1820 temperature measuring element, using multiple temperature sensor to test the multipoint temperature, through the keyboard module of temperature upper and lower limit set, more than the temp