Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Josep Jordana"'
Autor:
Manel Gasulla, Francesc J. Robert, Josep Jordana, Edgar Ripoll-Vercellone, Jordi Berenguer, Ferran Reverter
Publikováno v:
Proceedings, Vol 2, Iss 13, p 1049 (2018)
This paper presents the implementation of a high-efficiency radiofrequency (RF) harvester, which consists of a rectenna and a maximum power point tracker (MPPT). The rectenna was characterized from −30 dBm to −10 dBm at 808 MHz, achieving an effi
Externí odkaz:
https://doaj.org/article/45df67c419714ed7b1945fe7bf446e55
Publikováno v:
Sensors, Vol 17, Iss 8, p 1712 (2017)
Rectennas, which mainly consist of an antenna, matching network, and rectifier, are used to harvest radiofrequency energy in order to power tiny sensor nodes, e.g., the nodes of the Internet of Things. This paper demonstrates for the first time, the
Externí odkaz:
https://doaj.org/article/2b01c3d67d344f98b6a42b1b8f114a0b
Publikováno v:
Recercat. Dipósit de la Recerca de Catalunya
instname
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
instname
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
L-matching networks have been proposed for boosting the power efficiency of radiofrequency (RF) energy harvesters. This paper shows that power efficiency is maximized by fine-tuning the components of the L-matching network and the load. Simulations a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3067fc17754c3d25c2b50a32d4139452
https://doi.org/10.1016/j.proeng.2015.08.698
https://doi.org/10.1016/j.proeng.2015.08.698
Publikováno v:
Procedia Engineering. 87:1251-1254
This work proposes a fully-digital interface circuit for the measurement of inductive sensors using a low-cost microcontroller (μC) and without any intermediate active circuit. Apart from the μC and the sensor, the circuit just requires an external
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8c79d17bd843434c2799e6ca9d81f00a
Autor:
Ramon Pallas-Areny, Josep Jordana
Publikováno v:
Sensors and Actuators A: Physical. 127:69-73
Piezoresistive pressure sensors are currently available that could lead to a vast number of applications if they could be interfaced to microcontrollers using inexpensive circuits. Basic pressure sensors integrate four strain gages in a four-arm resi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e343b315d053731abc1c23868c36e62c
https://doi.org/10.1016/j.sna.2005.11.013
https://doi.org/10.1016/j.sna.2005.11.013
Publikováno v:
Sensors and Actuators A: Physical. 121:78-87
This paper analyses the accuracy and resolution of direct resistive sensor-to-microcontroller interfaces using theoretical and experimental methods. Three calibration techniques are evaluated: single-point, two-point and three-signal. This last metho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::858812ee8f74a3092f9e64f07b50d7bc
https://doi.org/10.1016/j.sna.2005.01.010
https://doi.org/10.1016/j.sna.2005.01.010
Publikováno v:
Review of Scientific Instruments. 75:5106-5111
Measurement devices and instruments must be calibrated after manufacture to correct for component and assembly tolerances, and periodically to correct for drift and aging effects. The number of reference inputs needed for calibration depends on the a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0c15a72ce0477373d385f8423006acc7
https://doi.org/10.1063/1.1818531
https://doi.org/10.1063/1.1818531
Publikováno v:
Sensors and Actuators A: Physical. 110:439-446
Microcontrollers with embedded counters offer a simple, compact interface for quasi-digital sensors whose output period depends on the measurand. However, as opposed to bench-top universal counters, manufacturers of microcontrollers do not specify th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1971a9befe19104532af6724410f10b1
https://doi.org/10.1016/j.sna.2003.09.003
https://doi.org/10.1016/j.sna.2003.09.003
Autor:
Josep Jordana, Ramon Pallas-Areny
Publikováno v:
Mathematical Geology. 36:127-141
This paper describes the use of a backprojection algorithm to reconstruct subsurface images of the electrical resistivity in horizontal planes parallel to the surface. The algorithm can be applied to detect buried objects such as tanks or pipes and p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d451c1798954541fda6264ed8849feb
https://doi.org/10.1023/b:matg.0000016233.09631.d7
https://doi.org/10.1023/b:matg.0000016233.09631.d7
Publikováno v:
IFAC Proceedings Volumes. 36:67-72
This paper analyses the effect of trigger noise and quantization on the uncertainty of time intervals measured with Timerl of the PIC16F874 microcontroller. The time intervals result from charging and discharging a capacitor through a resistive senso
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c1688e9625654bde69ba91eadefb4336
https://doi.org/10.1016/s1474-6670(17)33717-5
https://doi.org/10.1016/s1474-6670(17)33717-5