Its working principle involves sending a light beam incident from a light source through an optical fiber to a modulator, where it interacts with the modulator's internal and external measurement parameters to form a tunable optical signal. What are the usage methods and functions of digital fiber optic sensors?
I. How to Use Digital Fiber Optic Sensors
1. The SET button is used to set the sensitivity. The sensor works by using an optical fiber probe to sense the refractive index of different media, obtaining a digital signal, displaying it on the phone screen, and sending a switching value by comparing the displayed value with the set sensitivity value. 2. The indicator light brightens or dims when the sensor outputs a signal.
2. The "Set Sensitivity Value" option is displayed in green on the phone screen to show the currently set sensitivity value. When the value collected by the probe changes to this value, the sensor generates a signal.
II. The Role of Digital Fiber Optic Sensors
1. Water quantity and density measurement
The transmission power of a U-shaped optical fiber varies with the refractive index of the external medium. The light wave, acting as the information carrier, matches the positive charge ratio of the mixed fluid, and the flow pattern is independent of water quality. Based on this principle, fiber optic density sensors fundamentally solve the application problems of high water content, low resolution, and radioactive materials. For multiphase fluids like oil, where the refractive indices of water and gas differ, the refractive index of the mixed fluid varies with the ratio of oil, water, and gas. Therefore, this refractive index-modulated fiber optic sensor can measure not only the persistence of fluids but also their density with high accuracy.
2. Acoustic Measurement
Seismic waves propagate in different media, resulting in different seismic waveforms. Based on these different waveforms, it is possible to identify stratigraphic sequences and sedimentary structures, locate reservoirs, identify honeypots, detect casing damage and fractures, and determine perforation horizons and fluid flow.
What are the uses and functions of digital fiber optic sensors? Underground fiber optic three-component seismic surveying offers high sensitivity and directionality, producing high-precision spatial images. It can provide images not only near the wellbore but also of the surrounding geological formations, with a measurement range of thousands of kilometers. It can withstand environmental conditions, has no moving parts or lower-level electronic equipment, is highly impact-resistant, exhibits zero movement, and can be installed in complex, non-continuous, small spaces.
