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温湿度检测控制短信报警系统由单片机最小系统、温湿度传感器检测模块DHT11、按键模块、液晶显示模块、GSM模块和电源部分。以STC89C52单片机最小系统作为核心控制电路,温湿度传感器检测环境的温度和湿度经过单片机计算处理后在LCD1602液晶上把温度和湿度显示出来。当实际温度和湿度大于设置的温度和湿度的上限值或者实际温度和湿度小于设置的温度和湿度的下限值时,蜂鸣器和发光二极管发出声光报警并通过GSM模块发送至指定手机。温度和湿度的报警设置参数可以通过按键进行设置。长按可以实现连加和连减功能,具有上下限报警功能。
Temperature and humidity detection and control SMS alarm system consists of the smallest single-chip system, temperature and humidity sensor detection module DHT11, key module, LCD module, GSM module and power section. To STC89C52 microcontroller system as the core of the smallest control circuit, temperature and humidity sensor to detect the environment temperature and humidity after the single-chip computer processing LCD1602 LCD temperature and humidity on the show. When the actual temperature and humidity is greater than the upper limit of the set temperature and humidity or the actual temperature and humidity is less than the lower limit of the set temperature and humidity, the buzzer and light emitting diode sound and light alarm and sent to the designated phone through the GSM module . Alarm and setting parameters of temperature and humidity can be set by keys. Long press can be even plus and minus function, with upper and lower alarm.