Design and performance of wireless sensors for structural health monitoring

Watters, D. G.; Jayaweera, Palitha; Bahr, A. J.; Huestis, D. L.

doi:10.1063/1.1472901

Cited by 27 publications

(15 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moisture in the sponge detunes the tag's antenna, allowing approximation of humidity level from the read range of the tag. Finally, a custom tag for sensing high temperatures in food products used a fuse that melts above a particular threshold to enable or disable the tag [8]. These passive tags based on physical properties (e.g., a fuse that melts above a particular temperature) can "sense" while away from a reader but most are extremely limited in what they can report and are not reusable.…”

Section: Background and Related Workmentioning

confidence: 99%

Wirelessly-Charged UHF Tags for Sensor Data Collection

Yeager

Powledge

Prasad

et al. 2008

2008 IEEE International Conference on RFID

102

View full text Add to dashboard Cite

We present the WISP Passive Data Logger (PDL), an RFID sensor data logging platform that relies on a new, wirelessly-charged power model. A PDL has no battery yet (unlike a passive sensor tag) is able to collect data while away from an RFID reader. A PDL senses and logs data using energy stored in a capacitor; the capacitor can be wirelessly recharged (unlike active tags), and data can be uploaded whenever the PDL is near a reader. Standard EPC Generation 2 readers are used for WISP-PDL charging, ID-reading, and sensor data transfer. This allows WISP-PDLs to operate using commercial RFID readers as the only support infrastructure (for both data and power), and allows WISP-PDLs to co-exist with standard RFID tags. We describe the design and implementation of a prototype WISP-PDL, and report results from a short demonstration study that shows it can monitor the temperature and fullness of a milk carton as it is used over the course of a day.

show abstract

Section: Background and Related Workmentioning

confidence: 99%

Wirelessly-Charged UHF Tags for Sensor Data Collection

Yeager

Powledge

Prasad

et al. 2008

2008 IEEE International Conference on RFID

102

View full text Add to dashboard Cite

show abstract

“…For instance, power for sensors was scavenged from bridge vibrations in [5], while in another scenario an air core coil was connected to a voltage doubler to collect power in [6]. RFID technology was employed in [7][8][9] to transfer power by inductive coupling between master and sensor magnetic coils. In addition, the effects of concrete's dielectric constant and loss tangent to the radiation pattern and gain of a microstrip patch antenna were studied in [10].…”

Section: Introductionmentioning

confidence: 99%

Efficient wireless powering of sensors embedded in concrete via magnetic resonance

Jonah

Georgakopoulos

2011

2011 IEEE International Symposium on Antennas and Propagation (APSURSI)

View full text Add to dashboard Cite

Wireless power propagation via Strongly CoupledMagnetic Resonance (SCMR) by helical resonators through a non-homogenous interface, such as, air-concrete, is analyzed here. The power transfer mechanism consists of two self-resonant coils and two single loops in contrast to the two resonant loops traditionally used in RFID systems. The efficiency of wireless power transmission from a source in air to a sensor embedded in concrete via strongly coupled magnetic resonance is simulated as well as measured. The concrete material is modeled for various humidity levels using the extended Debye's model. The efficiency of the SCMR is also analyzed for different depths inside the concrete.

show abstract

“…Another approach uses a custom tag with a built in fuse for sensing high temperatures in food products. The fuse melts above a particular threshold which enables or disables the tag (Watters et al, 2002). These passive tags based on physical properties are extremely limited in what they can report and are not reusable.…”

Section: Prior Workmentioning

confidence: 99%