Passive UHF RFID Tag for Multispectral Assessment
| Autor: | Pablo Escobedo, Miguel A. Carvajal, Luis F. Capitán-Vallvey, José Fernández-Salmerón, Antonio Martínez-Olmos, Alberto J. Palma |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | Sensors, Vol 16, Iss 7, p 1085 (2016) |
| Druh dokumentu: | article |
| ISSN: | 1424-8220 16071085 |
| DOI: | 10.3390/s16071085 |
| Popis: | This work presents the design, fabrication, and characterization of a passive printed radiofrequency identification tag in the ultra-high-frequency band with multiple optical sensing capabilities. This tag includes five photodiodes to cover a wide spectral range from near-infrared to visible and ultraviolet spectral regions. The tag antenna and circuit connections have been screen-printed on a flexible polymeric substrate. An ultra-low-power microcontroller-based switch has been included to measure the five magnitudes issuing from the optical sensors, providing a spectral fingerprint of the incident electromagnetic radiation from ultraviolet to infrared, without requiring energy from a battery. The normalization procedure has been designed applying illuminants, and the entire system was tested by measuring cards from a colour chart and sensing fruit ripening. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
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