Institutional Repository
Technical University of Crete
Technical University of Crete
EN
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EL
| URI | http://purl.tuc.gr/dl/dias/99D6619A-8AE0-49C5-A677-5C34DCFF193B | - |
| Identifier | https://doi.org/10.26233/heallink.tuc.20218 | - |
| Language | en | - |
| Extent | 71 pages | en |
| Title | Scatter radio sensor network with analog frequency modulation principles | en |
| Creator | Kabianakis Eleftherios | en |
| Creator | Καμπιανακης Ελευθεριος | el |
| Contributor [Thesis Supervisor] | Bletsas Aggelos | en |
| Contributor [Thesis Supervisor] | Μπλετσας Αγγελος | el |
| Contributor [Committee Member] | Dollas Apostolos | en |
| Contributor [Committee Member] | Δολλας Αποστολος | el |
| Contributor [Committee Member] | Koutroulis Eftychios | en |
| Contributor [Committee Member] | Κουτρουλης Ευτυχιος | el |
| Publisher | Technical University of Crete | en |
| Publisher | Πολυτεχνείο Κρήτης | el |
| Academic Unit | Πολυτεχνείο Κρήτης::Σχολή Ηλεκτρονικών Μηχανικών και Μηχανικών Υπολογιστών | el |
| Content Summary | Scatter radio communication is implemented with very simple, low-power and low-cost front-ends that only consist of a single radio frequency (RF) switch. This work develops a bistatic scatter radio wireless sensor network (WSN) with analog energy-assisted tags that monitor relative humidity percentage (%RH) and consume less than 1 mWatt power. Particularly, the tags em- ploy a capacitance-to-frequency converter, that is implemented with a 555 timer and modulates the capacitance of the HCH-1000 %RH sensor. The frequency-modulated pulses are routed to the tag’s RF front-end which is designed to increase communication range. In order to convert the out- put frequency of the tags to %RH, a transfer function is estimated using careful polynomial surface fitting calibration and including the ambient tem- perature. Frequency division multiple access (FDMA) networking is im- plemented with the utilization of different passive components on each tag. Moreover the receiver that is implemented on a software defined radio (SDR) platform exploits carefully designed software filters based on histogram and Savitsky-Golay smoothing techniques. The achieved communication range is over 130 meters at an end-to-end root mean squared error (RMSE) of less than 5 %RH. For the network evaluation, a testbed is calibrated and deployed in a tomato greenhouse demonstrating a novel analog bistatic scatter radio WSN. Finally, an over the air programmable (OTAP) testbed was developed, employing nodes that utilize both an active radio front-end and scatter radio front-end in order to facilitate remote monitoring and debugging. | en |
| Type of Item | Μεταπτυχιακή Διατριβή | el |
| Type of Item | Master Thesis | en |
| License | http://creativecommons.org/licenses/by/4.0/ | en |
| Date of Item | 2014-07-25 | - |
| Date of Publication | 2014 | - |
| Subject | Motes (Wireless sensor nodes) | en |
| Subject | Sensor nodes, Wireless | en |
| Subject | wireless sensor nodes | en |
| Subject | motes wireless sensor nodes | en |
| Subject | sensor nodes wireless | en |
| Bibliographic Citation | Eleftherios Kabianakis, "Scatter radio sensor network with analog frequency modulation principles", Master Thesis, School of Electronic and Computer Engineering, Technical University of Crete, Chania, Greece, 2014 | en |
| Bibliographic Citation | Ελευθέριος Καμπιανάκης, "Scatter radio sensor network with analog frequency modulation principles", Μεταπτυχιακή Διατριβή, Σχολή Ηλεκτρονικών Μηχανικών και Μηχανικών Υπολογιστών, Πολυτεχνείο Κρήτης, Χανιά, Ελλάς, 2014 | el |
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