温度传感器的粮库温度检测系统的研究.doc

温度传感器的粮库温度检测系统的研究

摘要
粮仓管理中最重要的问题是监测粮堆中的温、湿度变化。国家为粮食储藏每年支付很高的费用，主要是因为监测设备成本较高，管理方式不够先进。在理论研究和实地考察实验的基础上，进行了粮食仓库温度和湿度实时在线巡回监测与控制系统的设计和研制。温度和湿度的检测与控制对防止粮食霉变有着重要的意义，讨论粮堆温度和湿度变化的主要原因以及粮食仓库中温度和湿度的允许变化范围。探讨在线测量，计算和控制粮食仓库温度和湿度的原理和方法，基本消灭了粮食霉变事故，同时也节省了大量人力和物力，减轻了粮仓管理的工作强度，提高了粮库管理效率，使粮食管理得到了安全可靠的保障。
正目前,粮库中的温湿度检测,基本上是人工检测,劳动强度大,繁琐,由于检测报警不及时,造成库储粮食损失的现象时有发生,于是,设计并研制性能价格比较高的粮库温湿度自动检测系统迫在眉睫。由于大型粮库分布广、储量大，粮库的管理和监测难度大，基于粮库粮情检测系统上的计算机管理软件的设计，由每个粮仓中配置的下位机将粮情数据通过无线数传模块发送给上位机，上位机将下位机的数据以曲线和表格的形式表示出来，清晰直观地显示出各仓内温湿度状况，由上位机对粮仓进行监视，管理人员在控制室就可以看到实时粮情数据，对粮情数据进行分析，实现粮仓管理自动化、智能化。

关键字：温湿度 粮仓 检测系统 设计

ABSTRACT
 Barn management of the most important issue is monitoring the grain heap temperature and humidity changes. countries for grain storage to pay high fees each year, mainly due to high cost of monitoring equipment, management methods were not advanced enough in the theoretical study and field visits on the basis of experiments carried out a food storage temperature and humidity, real-time monitoring and control system circuit design and development. the temperature and humidity measurement and control to prevent mildew food of great significance to discuss the grain heap the main reason for the temperature and humidity changes as well as food storage temperature and humidity range allowed explore on-line measurement, calculation and control of food storage temperature and humidity, the principles and methods, and basic elimination of food mildew accident, but also save a lot of manpower and material resources, thereby reducing the intensity of granary management work to improve the efficiency of management of the granary, so that food management has been a safe and reliable protection
Are present, the grain depots in the temperature and humidity testing is basically a manual inspection, labor-intensive, cumbersome, due to not timely detection and alarm, resulting in the loss of library storage of food phenomena have occurred, so the design and development of the higher cost performance granary temperature and humidity automatic detection systems is urgent. because large granary widely distributed, large reserves and grain storage management and monitoring difficult, based on intelligence grain depot detection system on the design of computer management software, configured by each granary-bit machines will pay under the circumstances the number of data via wireless transmission module sends to the host computer, host computer the next bit plane data in the form of curves and tables that come out, clear and intuitive display of temperature and humidity conditions within the warehouse by the host computer to the granary to monitor, manage personnel in the control room can be real-time intelligence data to see food on the food situation analysis of the data to achieve granary management automation, intelligent.

KEY WORDS：humiture granary detecing system desing

目   录
摘要 I
ABSTRACT II
目   录 III
第一章 引言 1
1.1 粮仓温室度检测技术的发展现状 1
1.2 课题的提出及研究的意义 3
1.3 本文的设计思路及预期结果 3
1.3.1 本文的设计思路 3
1.3.2 预期结果 4
第二章 粮仓温湿度监测系统设计基础知识 5
2.1 温湿度检测技术 5
2.1.1 湿度的相关概念 5
2.1.2 湿度传感器的分类及特点 6
2.1.3 温度的相关概念 8
2.1.4 温度传感器的分类及特点 8
2.2器件及模块的选择 10
2.2.1处理器 10
2.2.2转换器 10
2.2.3温度传感器 11
2.2.4湿度传感器 11
2.2.5测控模块 12
2.2.6显示模块 12
2.2.7报警模块 13
第三章 粮仓温室度检测系统的具体设计 15
3.1设计结构 15
3.2单片机在系统中的工作的原理（过程） 16
3.3 ATC0809转换器 18
3.4热电偶温度传感器 19
3.4.1补偿电桥 19
3.5湿度传感器 20
3.6 系统附带电路及元件设计 21
3.6.1系统时钟电路设计 21
3.6.2按键与按钮的设计 22
3.6.3 电源的设计 22
3.7系统软件部分 23
3.7.1显示设计 23
3.7.2报警模块 24
第四章 系统调试及结果分析 25
4.1 软件调试 25
4.1.1调试方法 25
4.1.2调试步骤 25
4.2系统测试结果 26
4.3系统完成 26
参考文献 28
附录 29
致谢 32