A temperature and humidity real-time detector is designed. The detector uses 51 SCM as control core. Humidity is measured with HM1500 transducer and conversed with 0832 A/D converter. Temperature is measured with intelligent sensor DS18B20. The output is displayed with LCD 1602. The detector has functions such as alarm set by keyboard; sound and light alarm exceed the limit; relay output control and serial communication. The detector is simulated by software Proteus and the hardware debugging is simplified. The measured error is ÃÂñ0.1ÃÂðC of temperature and ÃÂñ3% of humidity for comparison of the experimental data and theoretical data. The detector has advantages of simple circuit, small volume and convenient carrying, and is suitable for online monitoring of 1~100% for humidity and -55~+125ÃÂðC for temperature.
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机译：设计了一种温湿度实时检测仪。该检测器使用51 SCM作为控制核心。湿度用HM1500传感器测量，并用0832 A / D转换器转换。温度通过智能传感器DS18B20测量。 LCD 1602显示输出。检测器具有诸如通过键盘设置警报的功能;声光报警超限;继电器输出控制和串行通讯。检测器由Proteus软件进行仿真，简化了硬件调试。为比较实验数据和理论数据，测得的误差为温度±℃±0.1°C和湿度±3％。该探测器具有电路简单，体积小，携带方便的优点，适用于在线监测湿度的1〜100％和温度的-55〜+ 125°C。
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