Design Criteria for Full Passive Long Range UHF RFID Sensor for Human Body Temperature Monitoring

Pardo, D.; Vaz, António Guedes; Gil, Sang Keun; Gómez, Javier V.; Ubarretxena, Aritz; Puente, David; Morales-Ramos, R.; Garcia-Alonso, A.; Berenguer, Roc

doi:10.1109/rfid.2007.346162

Cited by 45 publications

(20 citation statements)

References 6 publications

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“…The block diagram of the modulator (Figure 8) shows the principle of the proposed simple backscatter modulator. An example on how to design load modulators can be found in Pardo et al (2007). However, the incoming spreaded data stream is low-pass filtered to limit forms the interface between the logic data and the backscattered HF wave.…”

Section: For Details)mentioning

confidence: 99%

Using CDMA as Anti-Collision Method for RFID - Research & Applications

Loeffler¹

2011

Current Trends and Challenges in RFID

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Section: For Details)mentioning

confidence: 99%

Using CDMA as Anti-Collision Method for RFID - Research & Applications

Loeffler¹

2011

Current Trends and Challenges in RFID

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“…In our outdoor monitoring application, an active RFID system operating in the Ultra-High-Frequency (UHF) range provides the necessary function, since it allows querying the tags from longer ranges than other lower frequencies. Additionally, RFID and sensor hardware convergence, which has already been realized in end products [22,23], enables the use of RFID-enabled sensors. When VSNs are improved with these additional sensing mechanisms, not only video frames but also physiological information will be of much importance.…”

Section: Healthcare Monitoring With Rfid-enhanced Vsnsmentioning

confidence: 99%

Wireless Healthcare Monitoring with RFID-Enhanced Video Sensor Networks

Alemdar

Durmus

Ersoy

2010

International Journal of Distributed Sensor Networks

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In pervasive healthcare systems, WSNs provide rich contextual information and alerting mechanisms against odd conditions with continuous monitoring. Furthermore, they minimize the need for caregivers and help the chronically ill and elderly to survive an independent life. In this paper, we propose an outdoor monitoring environment and evaluate the capabilities of video sensor networks for healthcare monitoring in an outdoor setting. The results exhibit that their capabilities are limited. For this reason, we proposed several enhancements for reducing the traffic load on the network for better performance. RFID is a very mature technology that has already been used in many areas. The RFID-enhanced video sensor networks reduce the network traffic load. Moreover, the proximity of the healthcare professionals who are also moving in the surveillance area is also used for better balancing the network load. Finally, for assuring the reporting of the emergency events with low latencies, we propose an emergency frame based queuing mechanism and evaluated its performance through simulations.

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“…Assuming that the reader is continuously sending a continuous wave (CW), the maximum communication distance between a passive RFID tag and the reader is mainly limited by two factors related to the tag's power consumption: the input power in the tag, and the voltage at the input of the voltage multiplier (Pardo et al, 2007;De Vita et al, 2005).…”

Section: Communication Rangementioning

confidence: 99%

“…Voltage at the input of the voltage multiplier According to (Pardo et al 2007), there is another constraint due to the minimum voltage at the input of the voltage multiplier. If the threshold voltage required to switch on the voltage multiplier is not achieved, the tag will not start working, no matter the available input power.…”

Section: Input Power In the Tagmentioning

confidence: 99%