Title :
Towards low-cost resolution optimized passive UHF RFID light sensing
Author :
Amin, Emran Md ; Bhattacharyya, R. ; Kumar, Sudhakar ; Sarma, Sridevi ; Karmakar, Nemai C.
Author_Institution :
Massachusetts Inst. of Technol. (MIT), Cambridge, MA, USA
Abstract :
This paper presents a low-cost, fully passive UHF RFID light sensor. We demonstrate how our design makes use of off-the-shelf photoresistors and LC components to establish a power frequency dependence which is used for improved sensor precision. Preliminary results show we can successfully identify 4 light intensity states between 0 to 1000 lux.
Keywords :
LC circuits; UHF detectors; microwave detectors; optical sensors; photodetectors; radiofrequency identification; LC components; light intensity state identification; off-the-shelf photoresistors; passive UHF RFID light sensor; power frequency dependence; Antenna measurements; Frequency measurement; Impedance; Prototypes; Radiofrequency identification; UHF measurements;
Conference_Titel :
Wireless and Microwave Technology Conference (WAMICON), 2014 IEEE 15th Annual
Conference_Location :
Tampa, FL
DOI :
10.1109/WAMICON.2014.6857769
