基于555定时器的数字化测湿方法的研究

Digitized Relative Humidity Measuring Based on 555 Timer

本文介绍了采用电容式相对湿度传感器HS1101作为555定时器的充放电电容进行湿度测量的方案,并详细介绍了其硬件电路和软件设计的过程,且给出了由555定时器的输出频率计算环境湿度的方法。该方案简单可行,具有一定的参考价值。

This paper introduces a relative humidity measuring system by using the relative humidity sensor HS1101 as the charge and discharge capacity of 555 timer. The hardware and software design are discussed in detail, and the relative humidity calculating method based on the output frequency of 555 timer is also proposed.