介绍了湿度传感器的现有技术,提出了使用激光扫描技术实现湿度检测的新方案。通过扫描检测水在1.36 μm处的吸收峰,实现了长期稳定湿度检测,避免了检测误差和漂移。整套系统采用全光纤设计,实现了远程检测。由于探头以及信号传输部分均不需要供电,因此增强了系统的安全性能。采用不易受温度、应力影响的光学器件,使得系统可以在高温高压环境中稳定工作。对设计的湿度检测技术进行了详细说明,并实现了一套湿度检测系统,达到了10-6量级湿度检测。

The humidity sensors of existing technologies are described,and the use of laser scanning technology for humidity detecting new programs is proposed. By scanning the water in the absorption peak at 1.36 μm,a long-term stable detection of humidity is achieved,and the errors and drift can be avoided. The entire system with all-fiber design,achieves a long-range detection. As the probe and signal transmission do not require electricity,the system′s security features are enhanced. The system uses optical devices less susceptible to temperature and stress,making the system more stable even in the high temperature and pressure environment. The design of the humidity detection technology is described in detail,and a humidity detection system is achieved. It reaches the detection of 10-6 -level moisture.