【摘要】 介绍了以8031单片机为中央处理器的温／湿度测试仪的硬件电路结构和软件设计原理。该测试仪采用热／湿敏元件与555构成的振荡电路作为信号转换接口，用度间隔方式解决温／湿度测值与对应的振荡频率之间的非线性的矛盾，具有性能价格比高，用途广泛等特点。更多还原

【Abstract】 A temperature-humidity measuring instrument based on 8031 microcontroller is introduced. The hardware structure and principle of the software design of the instrument are given. A oscillation circuit consisted by heat/humidity sensitive element and 555 time based circuit is used as changeover signal interface, and non-linear contradiction between the measured values of temperature or humidity and the oscillation frequency is solved with the aid of a degreespacing method. The instrument has a good performance, low price and wide use.更多还原