Design and Implementation of 2.45 GHz Passive SAW Temperature Sensors with BPSK Coded RFID Configuration
A surface acoustic wave based passive temperature sensor capable of multiple access is investigated. Binary Phase Shift Keying (BPSK) codes of eight chips were implemented using a reflective delay line scheme on a Y-Z LiNbO3 piezoelectric substrate. An accurate simulation based on the combined finit...
| Main Authors: | , , , , , , |
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| Format: | Article |
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MDPI AG
2017-08-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/17/8/1849 |
| _version_ | 1798002513856692224 |
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| author | Chen Fu Yabing Ke Min Li Jingting Luo Honglang Li Guangxing Liang Ping Fan |
| author_facet | Chen Fu Yabing Ke Min Li Jingting Luo Honglang Li Guangxing Liang Ping Fan |
| author_sort | Chen Fu |
| collection | DOAJ |
| description | A surface acoustic wave based passive temperature sensor capable of multiple access is investigated. Binary Phase Shift Keying (BPSK) codes of eight chips were implemented using a reflective delay line scheme on a Y-Z LiNbO3 piezoelectric substrate. An accurate simulation based on the combined finite- and boundary element method (FEM/BEM) was performed in order to determine the optimum design parameters. The scaling factor ‘s’ and time delay factor ‘τ’ were extracted using signal processing techniques based on the wavelet transform of the correlation function, and then evaluated at various ambient temperatures. The scaling factor ‘s’ gave a more stable and reliable response to temperature than the time delay factor ‘τ’. Preliminary results show that the sensor response is fast and consistent subject to ambient temperature and it exhibits good linearity of 0.9992 with temperature varying from 0 to 130 °C. |
| first_indexed | 2024-04-11T11:53:18Z |
| format | Article |
| id | doaj.art-ac338800abf345bbb489bfc10d83d0da |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T11:53:18Z |
| publishDate | 2017-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-ac338800abf345bbb489bfc10d83d0da2022-12-22T04:25:15ZengMDPI AGSensors1424-82202017-08-01178184910.3390/s17081849s17081849Design and Implementation of 2.45 GHz Passive SAW Temperature Sensors with BPSK Coded RFID ConfigurationChen Fu0Yabing Ke1Min Li2Jingting Luo3Honglang Li4Guangxing Liang5Ping Fan6Shenzhen Key Laboratory of Advanced Thin Films and Applications, College of Physics and Energy, Shenzhen University, Shenzhen 518060, ChinaInstitute of Acoustics, Chinese Academy of Sciences, Beijing 100190, ChinaShenzhen Key Laboratory of Advanced Thin Films and Applications, College of Physics and Energy, Shenzhen University, Shenzhen 518060, ChinaShenzhen Key Laboratory of Advanced Thin Films and Applications, College of Physics and Energy, Shenzhen University, Shenzhen 518060, ChinaInstitute of Acoustics, Chinese Academy of Sciences, Beijing 100190, ChinaShenzhen Key Laboratory of Advanced Thin Films and Applications, College of Physics and Energy, Shenzhen University, Shenzhen 518060, ChinaShenzhen Key Laboratory of Advanced Thin Films and Applications, College of Physics and Energy, Shenzhen University, Shenzhen 518060, ChinaA surface acoustic wave based passive temperature sensor capable of multiple access is investigated. Binary Phase Shift Keying (BPSK) codes of eight chips were implemented using a reflective delay line scheme on a Y-Z LiNbO3 piezoelectric substrate. An accurate simulation based on the combined finite- and boundary element method (FEM/BEM) was performed in order to determine the optimum design parameters. The scaling factor ‘s’ and time delay factor ‘τ’ were extracted using signal processing techniques based on the wavelet transform of the correlation function, and then evaluated at various ambient temperatures. The scaling factor ‘s’ gave a more stable and reliable response to temperature than the time delay factor ‘τ’. Preliminary results show that the sensor response is fast and consistent subject to ambient temperature and it exhibits good linearity of 0.9992 with temperature varying from 0 to 130 °C.https://www.mdpi.com/1424-8220/17/8/1849surface acoustic wave (SAW) devicepassiveradio frequency identification (RFID)temperature sensor |
| spellingShingle | Chen Fu Yabing Ke Min Li Jingting Luo Honglang Li Guangxing Liang Ping Fan Design and Implementation of 2.45 GHz Passive SAW Temperature Sensors with BPSK Coded RFID Configuration Sensors surface acoustic wave (SAW) device passive radio frequency identification (RFID) temperature sensor |
| title | Design and Implementation of 2.45 GHz Passive SAW Temperature Sensors with BPSK Coded RFID Configuration |
| title_full | Design and Implementation of 2.45 GHz Passive SAW Temperature Sensors with BPSK Coded RFID Configuration |
| title_fullStr | Design and Implementation of 2.45 GHz Passive SAW Temperature Sensors with BPSK Coded RFID Configuration |
| title_full_unstemmed | Design and Implementation of 2.45 GHz Passive SAW Temperature Sensors with BPSK Coded RFID Configuration |
| title_short | Design and Implementation of 2.45 GHz Passive SAW Temperature Sensors with BPSK Coded RFID Configuration |
| title_sort | design and implementation of 2 45 ghz passive saw temperature sensors with bpsk coded rfid configuration |
| topic | surface acoustic wave (SAW) device passive radio frequency identification (RFID) temperature sensor |
| url | https://www.mdpi.com/1424-8220/17/8/1849 |
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