High Frequency and Ultrahigh Frequency Radio Frequency Identification Passive Sensor Transponders for Humidity and Temperature Measurement Within Building Structures

This paper presents the development of passive high frequency (HF) and ultrahigh frequency (UHF) radio frequency identification (RFID) sensor transponders for humidity and temperature monitoring. The transponders use RFID integrated circuits with a digital interface for communicating with a ultralow...

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Bibliographic Details
Published in:IEEE transactions on instrumentation and measurement 2013-09, Vol.62 (9), p.2559-2566
Main Authors: Pursula, Pekka, Marttila, Ilkka, Nummila, Kaj, Seppa, Heikki
Format: Article
Language:English
Subjects:
Antenna measurements
Concrete
Environmental monitoring
Humidity
humidity measurement
radio frequency identification (RFID)
Radiofrequency identification
sensor RFID
sensor transponders
Temperature measurement
Transponders
UHF measurements
wireless sensors
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Summary:This paper presents the development of passive high frequency (HF) and ultrahigh frequency (UHF) radio frequency identification (RFID) sensor transponders for humidity and temperature monitoring. The transponders use RFID integrated circuits with a digital interface for communicating with a ultralow-power microprocessor. The microprocessor handles the measurement, either by charging sensor and reference capacitors, or by commanding a digital sensor. The read ranges of the sensor nodes are 5 cm and up to 40 cm at HF and UHF, respectively. The sensor nodes are demonstrated in concrete casts, where the HF node provides better than 5%RH-repeatability of the moisture measurements from sensor node to another. At UHF the repeatability is about 15%RH.
ISSN:0018-9456
1557-9662
DOI:10.1109/TIM.2013.2258763