基于单片机的无线温/湿度采集与控制系统

摘要

为了研究温/湿度的无线采集与控制,提出基于单片机AT89C52和AT89C2051作为微处理器的无线温/湿度采集与控制系统.由控制器模决、键盘模块、液晶显示模块、无线发射/接收模块、报警模块、空调系统组成.采用温度传感器DS18B20采集温度；采用线性频率输出集成湿度传感器HF3223采集相对湿度；采用键盘对目标温度进行人工设定；采用液晶显示器RT12864和LCD1602显示温度值和湿度值；采用PID算法产生的PWM波来实现对温度的控制；采用无线发射/接收模块实现温度值和湿度值的无线传输和显示.%In order to study the wireless acquisition and control of the temperature and humidity, this paper introduces the temperature and humidity acquisition and control system with SCM AT89C52 and AT89C2051 as microprocessors. The system includes control module, keyboard module, LCD module, wireless transmitting/receiving modules, alarm module and air-conditioning system. A temperature sensor DS18B20 is used to realize temperature acquisition, and a humidity sensor HF3223 integrated with linear frequency output is adopted for relative humidity acquisition. The keyboard is utilized to set the target temperature manually and the temperature and humidity value is displayed on the LCD RT12864 and LCD1602. The PWM wave produced by PID algorithm is used to achieve the temperature control and the temperature and humidity value is transmitted and displayed by the wireless transmitting/receiving module.