TY - GEN
T1 - Dual Measurement of Current and Temperature Using a Single Tunneling Magnetoresistive Sensor
AU - Liu, Xuyang
AU - Pong, Philip W.T.
AU - Liu, Chunhua
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/12/26
Y1 - 2018/12/26
N2 - This paper presents a sensitive and high cost-effective dual-parameter measurement technique, which is capable of measuring current and temperature based on Johnson noise thermometry (JNT) with the single tunneling magnetoresistive (TMR) sensor. The key is to utilize a TMR sensor with high sensitivity of 250 mV/V/mT to measure the current as well as temperature. Also, an ultra-low noise preamplifier with the equivalent noise as 3.1 nV/√Hz (@ 1 kHz) and a precise 10 μA constant current source are designed to implement the JNT and current measurement. Furthermore, a high-speed FPGA combined with ADC modules is used to carry out the signal processing algorithm and finally to calculate out the parameters of current and temperature. Finally, the dual-parameter sensing is verified by measuring current in the range of ±10 A and temperature ranging from -40 °C to 160 °C, respectively.
AB - This paper presents a sensitive and high cost-effective dual-parameter measurement technique, which is capable of measuring current and temperature based on Johnson noise thermometry (JNT) with the single tunneling magnetoresistive (TMR) sensor. The key is to utilize a TMR sensor with high sensitivity of 250 mV/V/mT to measure the current as well as temperature. Also, an ultra-low noise preamplifier with the equivalent noise as 3.1 nV/√Hz (@ 1 kHz) and a precise 10 μA constant current source are designed to implement the JNT and current measurement. Furthermore, a high-speed FPGA combined with ADC modules is used to carry out the signal processing algorithm and finally to calculate out the parameters of current and temperature. Finally, the dual-parameter sensing is verified by measuring current in the range of ±10 A and temperature ranging from -40 °C to 160 °C, respectively.
KW - Dual-parameter sensor
KW - Johnson noise thermometry
KW - TMR sensor
KW - Ultra-low noise preamplifier
UR - http://www.scopus.com/inward/record.url?scp=85060887121&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85060887121&partnerID=8YFLogxK
U2 - 10.1109/ICSENS.2018.8589743
DO - 10.1109/ICSENS.2018.8589743
M3 - Conference contribution
AN - SCOPUS:85060887121
T3 - Proceedings of IEEE Sensors
BT - 2018 IEEE SENSORS, SENSORS 2018 - Conference Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 17th IEEE SENSORS Conference, SENSORS 2018
Y2 - 28 October 2018 through 31 October 2018
ER -