TY - GEN
T1 - A 50mW CMOS wind sensor with ±4% speed and ±2° direction error
AU - Wu, Jianfeng
AU - Chae, Youngcheol
AU - Van Vroonhoven, Caspar P.L.
AU - Makinwa, Kofi A.A.
PY - 2011
Y1 - 2011
N2 - This paper describes a smart CMOS wind sensor that measures wind speed and direction without moving parts. It combines a 2-D thermal flow sensor and the required readout circuitry on a standard CMOS chip. The flow-dependent heat distribution in the chip is controlled and digitized by two thermal delta-sigma (TΔΣ) modulators. Both wind speed and direction can then be determined from their bitstream outputs. For wind speeds ranging from 1 to 25m/s, the sensor's error is less than ±4% (speed) and ±2° (direction), while consuming 9x less power than a previous design [1].
AB - This paper describes a smart CMOS wind sensor that measures wind speed and direction without moving parts. It combines a 2-D thermal flow sensor and the required readout circuitry on a standard CMOS chip. The flow-dependent heat distribution in the chip is controlled and digitized by two thermal delta-sigma (TΔΣ) modulators. Both wind speed and direction can then be determined from their bitstream outputs. For wind speeds ranging from 1 to 25m/s, the sensor's error is less than ±4% (speed) and ±2° (direction), while consuming 9x less power than a previous design [1].
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U2 - 10.1109/ISSCC.2011.5746239
DO - 10.1109/ISSCC.2011.5746239
M3 - Conference contribution
AN - SCOPUS:79955713133
SN - 9781612843001
T3 - Digest of Technical Papers - IEEE International Solid-State Circuits Conference
SP - 106
EP - 107
BT - 2011 IEEE International Solid-State Circuits Conference - Digest of Technical Papers, ISSCC 2011
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2011 IEEE International Solid-State Circuits Conference, ISSCC 2011
Y2 - 20 February 2011 through 24 February 2011
ER -