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

Pursula, Pekka; Marttila, Ilkka; Nummila, K. K.; Seppä, Heikki

doi:10.1109/tim.2013.2258763

Cited by 42 publications

(12 citation statements)

References 11 publications

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“…Also, planar inductorcapacitor (LC) circuits have been investigated as local, embedded moisture content sensors: the water content of the concrete could be remotely measured with a loop antenna, by tracking the changes in the sensors resonant frequency [13]. Furthermore, also passive radio frequency identification (RFId) sensor transponders have been developed for humidity monitoring in building structures; however, although they may last indefinitely, they require special packaging to protect them from saline water and grinding stones [14]. Additional methods for obtaining a moisture content profile of building structures include ground penetrating radar (GPR) [15], [16], evanescent field dielectrometry [17], and nuclear magnetic resonance [18]: these techniques are particularly important for Cultural Heritage buildings, where the use of non-destructive methods is essential.…”

Section: Introductionmentioning

confidence: 99%

Hydration Monitoring and Moisture Control of Cement-Based Samples Through Embedded Wire-Like Sensing Elements

2015

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In this paper, a time-domain reflectrometry (TDR)-based solution for monitoring moisture content in cement-based samples is presented. The proposed system employs a simple flexible bi-wire, which acts as a 'distributed' sensing element (as opposed to traditional, local moisture content sensors). Once embedded, the sensing element (SE) remains permanently inside the cement-based sample and can be used both for monitoring the hydration process of the sample structures (ex-ante monitoring) and, successively, for monitoring possible water infiltration during the service life of the structure (ex-post monitoring). In practical applications, the SE could be employed inside building structures at the time of construction, and it could be used for the aforementioned moisture content monitoring purposes. As a preliminary validation of the practical feasibility of the proposed system, in this work, two cement-based samples (made of mortar and concrete, respectively) were equipped with a SE, and their water content was monitored through TDR measurements, over a 28-day period (thus mimicking the ex-ante monitoring conditions). Furthermore, to verify the potential of the proposed method also for the ex-post monitoring, the air-dried mortar sample was intentionally subjected to wetting conditions and the resulting rising damp was observed through the proposed TDRbased system.

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Section: Introductionmentioning

confidence: 99%

Hydration Monitoring and Moisture Control of Cement-Based Samples Through Embedded Wire-Like Sensing Elements

2015

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“…This increases the cost of the tag and could require battery replacement. Concerning RFID architectures with sensors, microcontrollers can be used in combination with RFID chips and different types of sensors (e.g., temperature, light, and moisture content [4][5][6][7]; chemical sensing [8][9][10][11][12]; pressure [13]; general RFID platforms for different sensing applications [14][15][16]; surface acoustic wave (SAW) sensors [17] or built-in sensors; and typically temperature sensors [18]). There are also some examples of single chip architecture without a microcontroller unit [19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Read Range Enhancement of a Sensing RFID Tag by Photovoltaic Panel

et al. 2017

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An RFID tag with energy harvesting and sensing capabilities is presented in this paper. This RFID tag is based on an integrated circuit (SL900A) that incorporates a sensor front-end interface capable of measuring voltages, currents, resistances, and capacitances. The aim of this work is to improve the communication distance from the reader to the tag using energy harvesting techniques. Once the energy source and harvester are chosen according to the environment of work, the conditioning circuit for energy management has to be appropriately designed with respect to the nature of the transductor. As a proof of concept, a photovoltaic panel is used in this work to collect the energy from the environment that is managed by a DC-DC converter and stored in a capacitor acting as battery. Such energy is used to support the power system of the tag, giving autonomy to the device and allowing data logging. In particular, the developed tag monitors the ambient temperature and the power voltage. It would be possible to add external sensors without changing the architecture. An increase in the read range of more than 200% is demonstrated. This feature is especially interesting in environments where the access could be difficult.

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“…This is an attractive feature for wireless structural health monitoring (SHM) in the construction industry, as it leads to a reduction of servicing cycles of sensors. RFID‐based sensing with sensor‐integrated RFID tags has been used for monitoring temperature and humidity in concrete and to measure dynamic acceleration of structures for vibration‐based SHM . It is well known that the design of RFID tag antenna is crucial for the successful operation of any RFID‐based wireless monitoring system.…”

Section: Introductionmentioning

confidence: 99%

Construction material mountable UHF RFID tag antenna

Jayawardana

Kharkovsky

Liyanapathirana

2016

Micro & Optical Tech Letters

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This article presents a tag antenna for radio frequency identification (RFID)‐based wireless structural health monitoring systems. An ultra‐high frequency (UHF) microstrip patch tag antenna is designed with a new generation RFID tag chip for the Australian UHF RFID frequency band. Simulation studies with optimized slits demonstrate the ability of the antenna to tolerate the influence of construction materials such as concrete and metal on its resonant frequency, maximum gain, and read range. Noncontact measurement of the resonant frequency and experimental verification of the maximum gain of the fabricated tag antenna show good agreement with simulated performance. Read range measurements are conducted to verify the performance of the tag antenna on metal structures. It is also shown that the proposed tag antenna can be easily modified to operate in other UHF RFID frequency bands. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2231–2237, 2016

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

Cited by 42 publications

References 11 publications

Hydration Monitoring and Moisture Control of Cement-Based Samples Through Embedded Wire-Like Sensing Elements

Hydration Monitoring and Moisture Control of Cement-Based Samples Through Embedded Wire-Like Sensing Elements

Read Range Enhancement of a Sensing RFID Tag by Photovoltaic Panel

Construction material mountable UHF RFID tag antenna

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