Distributed Liquid Level Measurement with High Sensitivity and Large Sensing Range Based on ϕ-OTDR

2020 ◽  
Author(s):  
Qi Liu ◽  
Tao Liu ◽  
Tao He ◽  
Hao Li ◽  
Zhijun Yan ◽  
...  
Keyword(s):  
High Sensitivity ◽  
Liquid Level ◽  
Sensing Range ◽  
Level Measurement ◽  
Liquid Level Measurement

scholarly journals High resolution and large sensing range liquid level measurement using phase-sensitive optic distributed sensor

2021 ◽  
Vol 29 (8) ◽  
pp. 11538
Author(s):  
Qi Liu ◽  
Tao Liu ◽  
Tao He ◽  
Hao Li ◽  
Zhijun Yan ◽  
...  
Keyword(s):  
High Resolution ◽  
Liquid Level ◽  
Distributed Sensor ◽  
Sensing Range ◽  
Level Measurement ◽  
Liquid Level Measurement ◽  
Phase Sensitive

Liquid Level Measurement System Design Based on Laser Displacement Sensor

2013 ◽  
Vol 333-335 ◽  
pp. 37-40
Author(s):  
Wei Na Liu ◽  
Wen Bo Xu ◽  
Li Feng Yang
Keyword(s):  
Virtual Instrument ◽  
High Speed ◽  
Liquid Level ◽  
Displacement Sensor ◽  
Survey Method ◽  
Laser Displacement Sensor ◽  
Level Measurement ◽  
Real Time Measurement ◽  
Liquid Level Measurement ◽  
Measurement Experiment

In order to improve precision, outdated measurement method, complicated structure and weak anti-jam ability in liquid level measurement, a set of liquid level system was designed with the core of high-precision laser displacement sensor. The system adopted non-contact laser trigonometric survey method and powerful virtual instrument techniques. It could conduct online and real-time measurement to infinitesimal displacement on liquid level with high speed and precision. Through measurement experiment, its accuracy and practical applicability is verified.

Real-Time System for Liquid Level Measurement

2013 ◽  
Vol 441 ◽  
pp. 356-359
Author(s):  
Wei Wei ◽  
Hai Ying Jiang ◽  
Qin Jian Sun ◽  
Qiang Huang ◽  
Zhi Wei Wang
Keyword(s):  
Harmonic Oscillation ◽  
High Sensitivity ◽  
Capacitive Sensor ◽  
Liquid Level ◽  
Capacitance Measurement ◽  
Measurement Circuit ◽  
Real Time System ◽  
Level Measurement ◽  
Sensor Structure ◽  
Level Height

A small level measurement system is designed by installing a compact capacitive level sensor in the small container. By analyzing the capacitive sensor structure, a sensor measurement circuit is designed with high sensitivity, measuring stability and good repeatability. Capacitance measurement circuit makes use of multiple harmonic oscillation principle. The microcomputer measures the oscillation frequency of the multivibrator, and calculates the liquid level height based on the monotonic function about the liquid level height and frequency.

Continuous liquid level measurement using a linear electrode array

2007 ◽  
Vol 18 (7) ◽  
pp. 1859-1866 ◽  
Author(s):  
Ramon Casanella ◽  
Oscar Casas ◽  
Ramon Pallàs-Areny
Keyword(s):  
Electrode Array ◽  
Liquid Level ◽  
Level Measurement ◽  
Liquid Level Measurement
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