STC89C52单片机无线大棚温度监测系统设计+电路图+源程序
毕业论文关键词: 单片机STC89C52; 温度传感器DS18B20；液晶显示器LCD1602; 无线模块 NRF2401; 报警器。
The design of wireless temperature monitoring system for greenhouse
ABSTRACT
With the improvement of agricultural production scale, the old temperature control method has been more limitations for the large scale and large amount of greenhouse.. So, in the modern greenhouse management, the temperature automatic control and monitoring system, in order to meet the production needs of the modernization. This paper mainly describes the design principle and the design of the hardware and software of the wireless greenhouse temperature monitoring system which is based on the STC89C52 single chip microcomputer. The design of this system I use temperature sensor DS18B20 to collect temperature information, STC89C52 microcontroller as the host and from the machine control chip, nRF2401 wireless communication module is responsible for the host and from between the machine and the information transmission, the LCD1602 LCD as the display to display the received data greenhouse temperature information in real-time. When the indoor temperature of the greenhouse exceeds the preset temperature, the system will take the alarm processing of the bee. Such words will be able to use the user without the need to visit the greenhouse, just sitting in the control room, you can know the temperature of the greenhouse, to provide a convenient management greenhouse.
Keywords：Single Chip STC89C52; Sensor DS18B20; LCD LCD1602; Wireless Module NRF2401; A burglar alarm
目 录
无线大棚温度监测系统设计 1
摘 要 1
ABSTRACT 2
目 录 3
第一章 绪 论 5
1.1 课题研究背景 5
1.2国内外研究概况 5
1.2.1国外研究概况 5
1.2.2国内研究概况 6
1.3选题的现实意义 6
1.4课题主要研究内容与目标 7
第二章 设计方案论证 8
2.1设计思想 8
2.2要实现的功能 8
2.3 硬件方案的选择 8
2.3.1 主控制芯片的选泽 8
2.3.2 显示模块的选择 9
2.3.3 温度传感器的选泽 9
2.3.4 电源电路的比较与选择 9
2.3.5 数据发送接收电路选择 10
2.4方案可行性论证 10
第三章 系统硬件电路设计 12
3.1系统无线发射端硬件电路设计 12
3.1.1 STC89C52单片机最小系统设计 12
3.1.2 DS18B20温度传感器电路设计 14
3.1.3 电源电路设计 16
3.1.4无线发射模块电路设计 16