Title :
Solar-Powered Wireless Temperature Sensor Based on UWB RFID With Self-Calibration
Author :
Ramos, Angel ; Girbau, David ; Lazaro, Antonio ; Collado, Ana ; Georgiadis, Apostolos
Author_Institution :
Dept. of Electron., Electrics & Autom. Control Eng., Univ. Rovira i Virgili, Tarragona, Spain
Abstract :
This paper presents a solar-powered wireless temperature sensor based on time-coded ultrawideband (UWB) radio frequency identification. A negative temperature coefficient resistor acts as the sensing element. It controls the current of a PIN diode connected to a UWB scattering antenna. The wireless sensor is self-calibrated using a narrowband tone, making its performance independent of the distance or orientation between the reader and the sensor. A consumption of 82 μA is demonstrated. An error under 0.6 °C within a 35 °C-70 °C temperature range is obtained for most of the cases.
Keywords :
calibration; electromagnetic wave scattering; p-i-n diodes; radiofrequency identification; temperature sensors; ultra wideband communication; wireless sensor networks; PIN diode; UWB scattering antenna; current 82 muA; current control; negative temperature coefficient resistor; self-calibration; solar powered wireless temperature sensor; temperature 35 degC to 70 degC; time coded UWB RFID; ultrawideband radio frequency identification; Antennas; Calibration; Current measurement; Photovoltaic cells; Temperature measurement; Temperature sensors; NTC; PIN diode; Ultra-wideband; Ultra-wideband,; energy harvesting; solar cell;
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2015.2399972
