AI Article Synopsis
- - An innovative artificial olfactory system features four chemical sensors using quartz crystal microbalances (QCMs) with room temperature ionic liquids (RTILs) to detect odors.
- - The system includes an odor generation unit capable of creating eight different scents and blending them in various concentrations using solenoid valves for precise control.
- - Two control algorithms, delta-sigma modulator and pulse width modulation (PWM), are researched and evaluated for optimizing the solenoid valves, along with an assessment of the odor generation system's accuracy.
Article Abstract
An artificial olfactory system coupled with an odor generation system is herein reported. The artificial olfactory system is composed of four chemical sensors consisting of quartz crystal microbalances (QCMs) coated with room temperature ionic liquids (RTILs). The sensors are interrogated by four vector network analyzers, which are used to measure the series resonant frequency and motional resistance. The odor generation system can generate eight different odors and mix them in any composition. Solenoid valves are used to switch the path and control the concentration of the different odors before blending. Two algorithms to control the solenoid valves, delta-sigma modulator, and simple pulse width modulation (PWM) are studied, optimized, and compared. Finally, the uncertainty of the odor generating system is calculated.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6767231 | PMC |
| http://dx.doi.org/10.3390/s19184009 | DOI Listing |
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