Real-time tunable incoherent spatial filtering: a two-pupil processing technique

1990 ◽  
Vol 29 (12) ◽  
pp. 1507 ◽  
Author(s):  
Jinwoo Park
Keyword(s):  
Real Time ◽  
Spatial Filtering ◽  
Processing Technique

scholarly journals Thermal Modulation of a High-Bandwidth Gas Sensor Array in Real-Time for Application on a Mobile Robot

Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 858 ◽  
Author(s):  
Timothy A. Vincent ◽  
Yuxin Xing ◽  
Marina Cole ◽  
Julian W. Gardner
Keyword(s):  
Signal Processing ◽  
Mobile Robot ◽  
Real Time ◽  
Low Cost ◽  
Processing Technique ◽  
Signal Processing Technique ◽  
Baseline Drift ◽  
Gas Sensor Array ◽  
Sensor Module ◽  
High Bandwidth

A new signal processing technique has been developed for resistive metal oxide (MOX) gas sensors to enable high-bandwidth measurements and enhanced selectivity at PPM levels (<50 PPM VOCs). An embedded micro-heater is thermally pulsed from 225 to 350 °C, which enables the chemical reactions in the sensor film (e.g., SnO2, WO3, NiO) to be extracted using a fast Fourier transform. Signal processing is performed in real-time using a low-cost microcontroller integrated into a sensor module. The approach enables the remove of baseline drift and is resilient to environmental temperature changes. Bench-top experimental results are presented for 50 to 200 ppm of ethanol and CO, which demonstrate our sensor system can be used within a mobile robot.

scholarly journals Understanding the Advanced Signal Processing Technique of Real-Time Adaptive Filters

2009 ◽  
Vol 25 (3) ◽  
pp. 145-160 ◽  
Author(s):  
Hilary Ahman ◽  
Lindsay Thompson ◽  
Amy Swarbrick ◽  
Julie Woodward
Keyword(s):  
Signal Processing ◽  
Real Time ◽  
Adaptive Filters ◽  
Processing Technique ◽  
Signal Processing Technique

In-line particle sizing for real-time process control by fibre-optical spatial filtering technique (SFT)

2011 ◽  
Vol 22 (2) ◽  
pp. 203-208 ◽  
Author(s):  
Petrak Dieter ◽  
Dietrich Stefan ◽  
Eckardt Günter ◽  
Köhler Michael
Keyword(s):  
Process Control ◽  
Real Time ◽  
Spatial Filtering ◽  
Particle Sizing ◽  
Time Process ◽  
Filtering Technique

Real Time Spatial Filtering And Pseudocoloring By Light Scattering

1985 ◽  
Author(s):  
L. R. Berriel-Valdos ◽  
E. Jara ◽  
S. Guel ◽  
J. Ibarra
Keyword(s):  
Light Scattering ◽  
Real Time ◽  
Spatial Filtering
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