Sensor technologies have improved the everyday life of human beings through their
applications in almost all fields. Sensors are devices that detect changes in the …

The recent developed and applications of plastic fiber optic displacement sensors (FODSs)
based on intensity modulation technique are reviewed in this paper. In the evolvements of …

In the process of petroleum exploitation, liquid level is a significant parameter to determine
reasonable production of oil wells. In this paper a novel optical fiber based method is …

An intensity-based fiber-optic liquid-level gauge for continuous measurement is described.
The sensing principle is based on the total internal reflection of light within the fiber optic …

An optical fiber liquid-level sensor based on an extrinsic Fabry-Perot (FP) cavity is proposed
and demonstrated. The FP cavity consists of the end of the single-mode optical fiber and the …

A new technique for measuring liquid-level utilizing wedge wave is presented and
demonstrated through FEM simulation and a corresponding experiment. The velocities of …

Accurately predicting the dynamic liquid level is the key to energy efficient operation of oil
wells, however, the dynamic liquid level of oil wells in the same area varies widely, and the …

Composite resonant millimeter-sized piezoelectric cantilevers were fabricated and their
mass change sensitivity was evaluated using liquid evaporation experiments. The cantilever …

In this article, a simple intensity‐modulated fiber optic sensor for liquid level measurement is
presented. The sensor principle is based on frustrated total internal reflection effect caused …

We report a liquid-level sensor composed of a laser, prism, and photodiode array. The
sensor does not require components, such as a sensor head, inside the container that stores …