A 25mW CMOS sensor for wind and temperature measurement

Jianfeng Wu; Caspar Van Vroonhoven; Youngcheol Chae; Kofi Makinwa

doi:10.1109/ICSENS.2011.6127204

A 25mW CMOS sensor for wind and temperature measurement

Jianfeng Wu, Caspar Van Vroonhoven, Youngcheol Chae, Kofi Makinwa

Department of Electrical and Electronic Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

31 Citations (Scopus)

Abstract

This work presents a thermal sensor that can simultaneously measure wind velocity and ambient temperature. It consists of a silicon chip that is heated slightly above ambient temperature and is exposed to, and thus, cooled by the wind. Wind speed and direction are determined via two thermal sigma-delta (TΣΔ) modulators, which control and digitize the 2-D heat distribution in the chip. Ambient temperature is determined by measuring the modulator's period of oscillation, which depends on the thermal diffusivity of silicon, and is a well-defined function of ambient temperature. For wind speeds ranging from 1m/s to 25m/s, the sensor's error is less than ±4% (speed), ±2° (direction) and ±1°C (temperature) for temperatures ranging from -40°C to 50°C.

Original language	English
Title of host publication	IEEE Sensors 2011 Conference, SENSORS 2011
Pages	1261-1264
Number of pages	4
DOIs	https://doi.org/10.1109/ICSENS.2011.6127204
Publication status	Published - 2011
Event	10th IEEE SENSORS Conference 2011, SENSORS 2011 - Limerick, Ireland Duration: 2011 Oct 28 → 2011 Oct 31

Publication series

Name	Proceedings of IEEE Sensors

Other

Other	10th IEEE SENSORS Conference 2011, SENSORS 2011
Country/Territory	Ireland
City	Limerick
Period	11/10/28 → 11/10/31

All Science Journal Classification (ASJC) codes

Electrical and Electronic Engineering

Access to Document

10.1109/ICSENS.2011.6127204

Cite this

@inproceedings{26a9195d45a849b69b477418616697b9,

title = "A 25mW CMOS sensor for wind and temperature measurement",

abstract = "This work presents a thermal sensor that can simultaneously measure wind velocity and ambient temperature. It consists of a silicon chip that is heated slightly above ambient temperature and is exposed to, and thus, cooled by the wind. Wind speed and direction are determined via two thermal sigma-delta (TΣΔ) modulators, which control and digitize the 2-D heat distribution in the chip. Ambient temperature is determined by measuring the modulator's period of oscillation, which depends on the thermal diffusivity of silicon, and is a well-defined function of ambient temperature. For wind speeds ranging from 1m/s to 25m/s, the sensor's error is less than ±4% (speed), ±2° (direction) and ±1°C (temperature) for temperatures ranging from -40°C to 50°C.",

author = "Jianfeng Wu and {Van Vroonhoven}, Caspar and Youngcheol Chae and Kofi Makinwa",

year = "2011",

doi = "10.1109/ICSENS.2011.6127204",

language = "English",

isbn = "9781424492886",

series = "Proceedings of IEEE Sensors",

pages = "1261--1264",

booktitle = "IEEE Sensors 2011 Conference, SENSORS 2011",

note = "10th IEEE SENSORS Conference 2011, SENSORS 2011 ; Conference date: 28-10-2011 Through 31-10-2011",

}

TY - GEN

T1 - A 25mW CMOS sensor for wind and temperature measurement

AU - Wu, Jianfeng

AU - Van Vroonhoven, Caspar

AU - Chae, Youngcheol

AU - Makinwa, Kofi

PY - 2011

Y1 - 2011

N2 - This work presents a thermal sensor that can simultaneously measure wind velocity and ambient temperature. It consists of a silicon chip that is heated slightly above ambient temperature and is exposed to, and thus, cooled by the wind. Wind speed and direction are determined via two thermal sigma-delta (TΣΔ) modulators, which control and digitize the 2-D heat distribution in the chip. Ambient temperature is determined by measuring the modulator's period of oscillation, which depends on the thermal diffusivity of silicon, and is a well-defined function of ambient temperature. For wind speeds ranging from 1m/s to 25m/s, the sensor's error is less than ±4% (speed), ±2° (direction) and ±1°C (temperature) for temperatures ranging from -40°C to 50°C.

AB - This work presents a thermal sensor that can simultaneously measure wind velocity and ambient temperature. It consists of a silicon chip that is heated slightly above ambient temperature and is exposed to, and thus, cooled by the wind. Wind speed and direction are determined via two thermal sigma-delta (TΣΔ) modulators, which control and digitize the 2-D heat distribution in the chip. Ambient temperature is determined by measuring the modulator's period of oscillation, which depends on the thermal diffusivity of silicon, and is a well-defined function of ambient temperature. For wind speeds ranging from 1m/s to 25m/s, the sensor's error is less than ±4% (speed), ±2° (direction) and ±1°C (temperature) for temperatures ranging from -40°C to 50°C.

UR - http://www.scopus.com/inward/record.url?scp=84863030692&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84863030692&partnerID=8YFLogxK

U2 - 10.1109/ICSENS.2011.6127204

DO - 10.1109/ICSENS.2011.6127204

M3 - Conference contribution

AN - SCOPUS:84863030692

SN - 9781424492886

T3 - Proceedings of IEEE Sensors

SP - 1261

EP - 1264

BT - IEEE Sensors 2011 Conference, SENSORS 2011

T2 - 10th IEEE SENSORS Conference 2011, SENSORS 2011

Y2 - 28 October 2011 through 31 October 2011

ER -

A 25mW CMOS sensor for wind and temperature measurement

Abstract

Publication series

Other

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this