引言光纤传感器在工业测量技术中的应用刚刚开始,目前几乎还没有这方面的现场经验。对于工业测量系统来说,其关键首先是在极端外界条件下的精确度、可靠性和长期稳定性。倘若对此能找到合适的技术途径,则光纤传感器绝对优于传统传感器。光纤传感器可作为纯光学传感器在电磁污染环境或防爆区域很好地使用。此外它不传输电势,而且在化学腐蚀环境中不受影响。本文介绍一种高精度非接触测距用光纤位移传感器。由于采用了调制相位差测量原理,从而确保其高的长期稳定性。即使在由于老化 Introduction The application of optical fiber sensor in industrial measurement technology has just begun, there is almost no field experience in this field at present. For industrial measurement systems, the key is first and foremost the accuracy, reliability and long-term stability under extreme external conditions. If you can find a suitable technology approach, the optical fiber sensor is definitely superior to the traditional sensor. Fiber optic sensors can be used as pure optical sensors in electromagnetically contaminated environments or explosion proof areas. In addition it does not transfer potential and is not affected in a chemically aggressive environment. This article describes a high-precision non-contact optical fiber with a displacement sensor. Due to the modulation phase difference measurement principle, to ensure its high long-term stability. Even after due to aging