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Sensors 2011, 11(5), 4609-4621; doi:10.3390/s110504609
Article

An Electronic-Nose Sensor Node Based on a Polymer-Coated Surface Acoustic Wave Array for Wireless Sensor Network Applications

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Received: 3 February 2011; in revised form: 17 February 2011 / Accepted: 7 April 2011 / Published: 28 April 2011
(This article belongs to the Special Issue Direct and Indirect Sensing of Odor and VOCs and Their Control)
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Abstract: This study developed an electronic-nose sensor node based on a polymer-coated surface acoustic wave (SAW) sensor array. The sensor node comprised an SAW sensor array, a frequency readout circuit, and an Octopus II wireless module. The sensor array was fabricated on a large K2 128° YX LiNbO3 sensing substrate. On the surface of this substrate, an interdigital transducer (IDT) was produced with a Cr/Au film as its metallic structure. A mixed-mode frequency readout application specific integrated circuit (ASIC) was fabricated using a TSMC 0.18 μm process. The ASIC output was connected to a wireless module to transmit sensor data to a base station for data storage and analysis. This sensor node is applicable for wireless sensor network (WSN) applications.
Keywords: electronic nose; wireless sensor network; sensor node; SAW sensor array electronic nose; wireless sensor network; sensor node; SAW sensor array
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Tang, K.-T.; Li, C.-H.; Chiu, S.-W. An Electronic-Nose Sensor Node Based on a Polymer-Coated Surface Acoustic Wave Array for Wireless Sensor Network Applications. Sensors 2011, 11, 4609-4621.

AMA Style

Tang K-T, Li C-H, Chiu S-W. An Electronic-Nose Sensor Node Based on a Polymer-Coated Surface Acoustic Wave Array for Wireless Sensor Network Applications. Sensors. 2011; 11(5):4609-4621.

Chicago/Turabian Style

Tang, Kea-Tiong; Li, Cheng-Han; Chiu, Shih-Wen. 2011. "An Electronic-Nose Sensor Node Based on a Polymer-Coated Surface Acoustic Wave Array for Wireless Sensor Network Applications." Sensors 11, no. 5: 4609-4621.


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