基于单片机的粮仓温湿控制系统设计.docVIP

PAGE 关键词：AT89S52;DS18B20;HS1100/HS1101;PC机;人机接口 Abstract : The paper develops a temperature and humidity controlling system for grain depot .The system is based on a chip microprocessor AT89S52,uses one-line type digitaltemperature sensor DS18B20 and the capacitance humidity sensor HS1100/HS1101 to collect humiture data,realizes the collecting of remote data as well as the setting of measuring and controlling order parameter.The system has the following advantages:its interface is friendly,it is controlled easily,its hardware system is integrated highly,the circuitry is simple,its function is strong,it has good performance,the cost is lower and so on.The system settles many defects of traditional humiture testing equipments as well as manual dewetting and cooling.Meanwhile,the system realizes the measuring and controlling of multiple-point humiture parameters. Keywords: AT89S52;DS18B20;HS1100/HS1101;PC; personal digital assistant(PDA) 目录 TOC \o \h \z \u HYPERLINK \l _Toc264043857 1.系统功能说明 PAGEREF _Toc264043857 \h 1 HYPERLINK \l _Toc264043858 2.系统总体设计 PAGEREF _Toc264043858 \h 1 HYPERLINK \l _Toc264043859 2.1.系统硬件结构设计 PAGEREF _Toc264043859 \h 1 HYPERLINK \l _Toc264043860 2.2.通信方案选择 PAGEREF _Toc264043860 \h 1 HYPERLINK \l _Toc264043861 3.系统硬件设计 PAGEREF _Toc264043861 \h 2 HYPERLINK \l _Toc264043862 3.1.数据采集电路设计 PAGEREF _Toc264043862 \h 2 HYPERLINK \l _Toc264043863 3.1.1.温度采集接口电路 PAGEREF _Toc264043863 \h 2 HYPERLINK \l _Toc264043864 .DS18B20介绍： PAGEREF _Toc264043864 \h 2 HYPERLINK \l _Toc264043865 .接口电路 PAGEREF _Toc264043865 \h 4 HYPERLINK \l _Toc264043866 3.1.2.湿度采集电路 PAGEREF _Toc264043866 \h 5 HYPERLINK \l _Toc264043867 .HS1100/HS1101湿度传感器介绍： PAGEREF _Toc264043867 \h 5 HYPERLINK \l _Toc264043868 ．多路湿度检测信号的实现 PAGEREF _Toc264043868 \h 5 HYPERLINK \l _Toc264043869 3.1.3.多路开关介绍 PAGEREF _Toc264043869 \h 6 HYPERLINK \l _Toc264043870 3.2.单片机系统设计 PAGEREF _Toc264043870 \h 7 HYPERLINK \l _Toc264043871 3.3.其它外围接口电路设计 PAGEREF _Toc264043871 \h 8