An optical sensor for monitoring of dissolved oxygen based on phase detection

2013 ◽  
Vol 15 (5) ◽  
pp. 055502 ◽  
Author(s):  
Weiwei Feng ◽  
Na Zhou ◽  
Lingxin Chen ◽  
Bowei Li
Keyword(s):  
Dissolved Oxygen ◽  
Optical Sensor ◽  
Phase Detection

Scanning optical sensor for the measurement of dissolved oxygen and BOD

1994 ◽  
Vol 21 (2) ◽  
pp. 143-149 ◽  
Author(s):  
Xiang-Ming Li ◽  
Fu-Chang Ruan ◽  
Wing-Yan Ng ◽  
Kwok-Yin Wong
Keyword(s):  
Dissolved Oxygen ◽  
Optical Sensor

A composite thin film optical sensor for dissolved oxygen in contaminated aqueous environments

2005 ◽  
Vol 545 (2) ◽  
pp. 189-194 ◽  
Author(s):  
R.N. Gillanders ◽  
M.C. Tedford ◽  
P.J. Crilly ◽  
R.T. Bailey
Keyword(s):  
Thin Film ◽  
Dissolved Oxygen ◽  
Optical Sensor ◽  
Composite Thin Film ◽  
Aqueous Environments

Optical sensor based on fluorescent quenching and pulsed blue LED excitation for long-term monitoring of dissolved oxygen in NASA space bioreactors

2005 ◽  
Vol 10 (5) ◽  
pp. 054005 ◽  
Author(s):  
Frank G. Gao ◽  
James M. Fay ◽  
Grace Mathew ◽  
Antony S. Jeevarajan ◽  
Melody M. Anderson
Keyword(s):  
Dissolved Oxygen ◽  
Optical Sensor ◽  
Blue Led ◽  
Fluorescent Quenching ◽  
Long Term Monitoring ◽  
Term Monitoring

A hand-held optical sensor for dissolved oxygen measurement

2003 ◽  
Vol 14 (6) ◽  
pp. 862-867 ◽  
Author(s):  
Dan Xiao ◽  
Yuanyao Mo ◽  
Martin M F Choi
Keyword(s):  
Dissolved Oxygen ◽  
Optical Sensor ◽  
Oxygen Measurement

CMOS integrated optical sensor using phase detection

2004 ◽  
Author(s):  
V.P. Chodavarapu ◽  
S.P. Khanolkar ◽  
E.C. Tehan ◽  
A.H. Titus ◽  
A.N. Cartwright ◽  
...  
Keyword(s):  
Optical Sensor ◽  
Phase Detection ◽  
Integrated Optical ◽  
Integrated Optical Sensor

scholarly journals Oxygen sensors for flow reactors – measuring dissolved oxygen in organic solvents

2019 ◽  
Vol 4 (12) ◽  
pp. 2081-2087 ◽  
Author(s):  
Philipp Sulzer ◽  
René Lebl ◽  
C. Oliver Kappe ◽  
Torsten Mayr
Keyword(s):  
Dissolved Oxygen ◽  
Organic Solvents ◽  
Optical Sensor ◽  
Oxygen Sensors ◽  
Flow Reactors ◽  
Micro Flow

We are demonstrating a solvent resistant optical sensor for measuring dissolved oxygen in pressurized micro flow reactors.

An In Situ Dissolved Oxygen Monitoring System Based on Fluorescence Quenching Phase Detection

2012 ◽  
Vol 588-589 ◽  
pp. 968-973 ◽  
Author(s):  
Tao Zhang ◽  
Shu Ming Ye ◽  
Ji Yu Han ◽  
Jun Feng Liu
Keyword(s):  
Fluorescence Quenching ◽  
Power Consumption ◽  
Dissolved Oxygen ◽  
Low Power ◽  
High Precision ◽  
Low Power Consumption ◽  
Phase Detection ◽  
Oxygen Monitoring ◽  
Dissolved Oxygen Monitoring

As a major indicator in marine life research and geochemistry, the in-situ monitoring of dissolved oxygen has become increasingly important in the assessment of marine ecosystem. It has been proved that fluorescence quenching may result in shorter fluorescence lifetime. Based on it, this paper proposes an in-situ dissolved oxygen monitoring system of high precision and low power consumption applicable to long-term monitoring of complex marine environment. Using phase detecting method, an AC analog amplification channel on Precision photoelectric detection, and used digital phase detection method and three order integral average method to detect the phase offset. The ultralow-power microcontroller was used to control system. The experiments results show that the system has high stability, high precision(0.02mg/L), quick response time(≤40s), low power consumption(peak current ≤10mA), strong anti interference ability.

Multiplex bacterial growth monitoring in 24-well microplates using a dual optical sensor for dissolved oxygen and pH

2008 ◽  
Vol 100 (3) ◽  
pp. 430-438 ◽  
Author(s):  
Anna S. Kocincová ◽  
Stefan Nagl ◽  
Sarina Arain ◽  
Christian Krause ◽  
Sergey M. Borisov ◽  
...  
Keyword(s):  
Dissolved Oxygen ◽  
Bacterial Growth ◽  
Optical Sensor ◽  
Growth Monitoring
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