Smart metering applications for monitoring the power usage of industrial or household appliances are rapidly increasing. At the same time, constraints such as the ease of installation and a long lifetime have boosted the interest in developing dedicated wireless sensor networks combined with energy harvesting systems and contact-less sensors. In this paper we present a hybrid circuit, tailored for wireless current meters, which performs current measurement and power supply extraction from the same non-invasive, clamp-on current transformer. A power saving MOSFET-based switch system (MSwS) connects the current sensor to the harvesting circuit during the node sleep time and to the measurement circuit when the node is active according to a proper operating duty-cycle. Experimental results show that the energy spent during the active phase can be totally recovered during the sleep time interval making the sensor node capable to self-sustain its operations and to operate without batteries indefinitely.

Clamp-and-measure forever: A MOSFET-based circuit for energy harvesting and measurement targeted for power meters

Brunelli, Davide;
2013-01-01

Abstract

Smart metering applications for monitoring the power usage of industrial or household appliances are rapidly increasing. At the same time, constraints such as the ease of installation and a long lifetime have boosted the interest in developing dedicated wireless sensor networks combined with energy harvesting systems and contact-less sensors. In this paper we present a hybrid circuit, tailored for wireless current meters, which performs current measurement and power supply extraction from the same non-invasive, clamp-on current transformer. A power saving MOSFET-based switch system (MSwS) connects the current sensor to the harvesting circuit during the node sleep time and to the measurement circuit when the node is active according to a proper operating duty-cycle. Experimental results show that the energy spent during the active phase can be totally recovered during the sleep time interval making the sensor node capable to self-sustain its operations and to operate without batteries indefinitely.
2013
Advances in Sensors and Interfaces (IWASI), 2013 5th IEEE International Workshop on
USA
ACM/IEEE
9781479900398
D., Porcarelli; Brunelli, Davide; L., Benini
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/33134
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 17
  • ???jsp.display-item.citation.isi??? 13
social impact