TY - GEN
T1 - Ultra low-cost sensors using RFID standards for data collection, for IoT systems in food production and logistics
AU - Arnaud, Alfredo
AU - Costa, Guillermo
N1 - Publisher Copyright:
© 2020 IEEE.
PY - 2020/2
Y1 - 2020/2
N2 - In this work, RFID based sensors are introduced, which means very low-cost sensing nodes and loggers utilizing the hardware and protocols of traditional passive RFID transponders and readers for the short distance wireless sensor readout. Classic frequencies bands include LF ~125kHz, HF ~13.56MHz, and UHF ~900MHz. While HF and UHF off-the-shelf ICs and available IP exist to implement sensor transponders, is not the case of LF. In this work, an ASIC is presented to enhance the reading distance of a semi-active LF sensor transponder up to a few meters. The ASIC includes a 134.2kHz-centered band-pass amplifier, a ~50ms pulse detector, and a HV H-bridge to drive the antenna coil. It was fabricated in a 0.6μm HV-CMOS technology and tested. It was capable to detect the presence of a portable reader, up to a 5m distance, corresponding to an input signal as low as 40μVp in the antenna, with a continuous-time current consumption < 3μA.
AB - In this work, RFID based sensors are introduced, which means very low-cost sensing nodes and loggers utilizing the hardware and protocols of traditional passive RFID transponders and readers for the short distance wireless sensor readout. Classic frequencies bands include LF ~125kHz, HF ~13.56MHz, and UHF ~900MHz. While HF and UHF off-the-shelf ICs and available IP exist to implement sensor transponders, is not the case of LF. In this work, an ASIC is presented to enhance the reading distance of a semi-active LF sensor transponder up to a few meters. The ASIC includes a 134.2kHz-centered band-pass amplifier, a ~50ms pulse detector, and a HV H-bridge to drive the antenna coil. It was fabricated in a 0.6μm HV-CMOS technology and tested. It was capable to detect the presence of a portable reader, up to a 5m distance, corresponding to an input signal as low as 40μVp in the antenna, with a continuous-time current consumption < 3μA.
KW - IoT
KW - RFID
KW - active sensor
KW - low-frequency
UR - http://www.scopus.com/inward/record.url?scp=85084310572&partnerID=8YFLogxK
U2 - 10.1109/LASCAS45839.2020.9068972
DO - 10.1109/LASCAS45839.2020.9068972
M3 - Contribución a la conferencia
AN - SCOPUS:85084310572
T3 - 2020 IEEE 11th Latin American Symposium on Circuits and Systems, LASCAS 2020
BT - 2020 IEEE 11th Latin American Symposium on Circuits and Systems, LASCAS 2020
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 11th IEEE Latin American Symposium on Circuits and Systems, LASCAS 2020
Y2 - 25 February 2020 through 28 February 2020
ER -