# A single-chip CMOS smoke and temperature sensor for an intelligent fire detector

Jimin Cheon, Jeonghwan Lee, Inhee Lee, Youngcheol Chae, Youngsin Yoo, Gunhee Han

Research output: Contribution to journalArticle

27 Citations (Scopus)

### Abstract

A single-chip CMOS smoke and temperature sensor for use as an intelligent fire detector is proposed. The proposed smoke sensor measures smoke density based on the light-scattering method. The temperature sensor is integrated with the smoke sensor not only to sense heat from a fire but also to compensate for the temperature dependency of the smoke sensor. The prototype chip includes an on-chip photodiode (PD), pixel circuit, correlated double sampling (CDS) circuit, and analog-to-digital converter (ADC). The prototype chip was fabricated using a 0.35-$\mu$ m CMOS process and was placed inside the smoke detection chamber, while the thermistor for the temperature sensor is placed outside the chamber. The measurement results show $\pm$ 1% smoke detection accuracy over the range 4% $\sim$ 25% and $\pm 1~^{\circ}\hbox{C}$ temperature-sensing accuracy over the range $25~^{\circ}\hbox{C}\sim 95~^{\circ}\hbox{C}$. The power consumption of the prototype chip is 220 nW, excluding the infrared light-emitting diode (IR LED).

Original language English 5153565 914-921 8 IEEE Sensors Journal 9 8 https://doi.org/10.1109/JSEN.2009.2024703 Published - 2009 Aug 1

### Fingerprint

Fire detectors
smoke
temperature sensors
Temperature sensors
Smoke
CMOS
chips
sensors
detectors
prototypes
Sensors
chambers
Thermistors
thermistors
Networks (circuits)
analog to digital converters
Digital to analog conversion
Photodiodes
Light scattering
photodiodes

### All Science Journal Classification (ASJC) codes

• Instrumentation
• Electrical and Electronic Engineering

### Cite this

Cheon, Jimin ; Lee, Jeonghwan ; Lee, Inhee ; Chae, Youngcheol ; Yoo, Youngsin ; Han, Gunhee. / A single-chip CMOS smoke and temperature sensor for an intelligent fire detector. In: IEEE Sensors Journal. 2009 ; Vol. 9, No. 8. pp. 914-921.
@article{e066b86bb0da4e81aab6012dcccbf048,
title = "A single-chip CMOS smoke and temperature sensor for an intelligent fire detector",
abstract = "A single-chip CMOS smoke and temperature sensor for use as an intelligent fire detector is proposed. The proposed smoke sensor measures smoke density based on the light-scattering method. The temperature sensor is integrated with the smoke sensor not only to sense heat from a fire but also to compensate for the temperature dependency of the smoke sensor. The prototype chip includes an on-chip photodiode (PD), pixel circuit, correlated double sampling (CDS) circuit, and analog-to-digital converter (ADC). The prototype chip was fabricated using a 0.35-$\mu$ m CMOS process and was placed inside the smoke detection chamber, while the thermistor for the temperature sensor is placed outside the chamber. The measurement results show $\pm$ 1{\%} smoke detection accuracy over the range 4{\%} $\sim$ 25{\%} and $\pm 1~^{\circ}\hbox{C}$ temperature-sensing accuracy over the range $25~^{\circ}\hbox{C}\sim 95~^{\circ}\hbox{C}$. The power consumption of the prototype chip is 220 nW, excluding the infrared light-emitting diode (IR LED).",
author = "Jimin Cheon and Jeonghwan Lee and Inhee Lee and Youngcheol Chae and Youngsin Yoo and Gunhee Han",
year = "2009",
month = "8",
day = "1",
doi = "10.1109/JSEN.2009.2024703",
language = "English",
volume = "9",
pages = "914--921",
journal = "IEEE Sensors Journal",
issn = "1530-437X",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "8",

}

A single-chip CMOS smoke and temperature sensor for an intelligent fire detector. / Cheon, Jimin; Lee, Jeonghwan; Lee, Inhee; Chae, Youngcheol; Yoo, Youngsin; Han, Gunhee.

In: IEEE Sensors Journal, Vol. 9, No. 8, 5153565, 01.08.2009, p. 914-921.

Research output: Contribution to journalArticle

TY - JOUR

T1 - A single-chip CMOS smoke and temperature sensor for an intelligent fire detector

AU - Cheon, Jimin

AU - Lee, Jeonghwan

AU - Lee, Inhee

AU - Chae, Youngcheol

AU - Yoo, Youngsin

AU - Han, Gunhee

PY - 2009/8/1

Y1 - 2009/8/1

N2 - A single-chip CMOS smoke and temperature sensor for use as an intelligent fire detector is proposed. The proposed smoke sensor measures smoke density based on the light-scattering method. The temperature sensor is integrated with the smoke sensor not only to sense heat from a fire but also to compensate for the temperature dependency of the smoke sensor. The prototype chip includes an on-chip photodiode (PD), pixel circuit, correlated double sampling (CDS) circuit, and analog-to-digital converter (ADC). The prototype chip was fabricated using a 0.35-$\mu$ m CMOS process and was placed inside the smoke detection chamber, while the thermistor for the temperature sensor is placed outside the chamber. The measurement results show $\pm$ 1% smoke detection accuracy over the range 4% $\sim$ 25% and $\pm 1~^{\circ}\hbox{C}$ temperature-sensing accuracy over the range $25~^{\circ}\hbox{C}\sim 95~^{\circ}\hbox{C}$. The power consumption of the prototype chip is 220 nW, excluding the infrared light-emitting diode (IR LED).

AB - A single-chip CMOS smoke and temperature sensor for use as an intelligent fire detector is proposed. The proposed smoke sensor measures smoke density based on the light-scattering method. The temperature sensor is integrated with the smoke sensor not only to sense heat from a fire but also to compensate for the temperature dependency of the smoke sensor. The prototype chip includes an on-chip photodiode (PD), pixel circuit, correlated double sampling (CDS) circuit, and analog-to-digital converter (ADC). The prototype chip was fabricated using a 0.35-$\mu$ m CMOS process and was placed inside the smoke detection chamber, while the thermistor for the temperature sensor is placed outside the chamber. The measurement results show $\pm$ 1% smoke detection accuracy over the range 4% $\sim$ 25% and $\pm 1~^{\circ}\hbox{C}$ temperature-sensing accuracy over the range $25~^{\circ}\hbox{C}\sim 95~^{\circ}\hbox{C}$. The power consumption of the prototype chip is 220 nW, excluding the infrared light-emitting diode (IR LED).

UR - http://www.scopus.com/inward/record.url?scp=67749109993&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=67749109993&partnerID=8YFLogxK

U2 - 10.1109/JSEN.2009.2024703

DO - 10.1109/JSEN.2009.2024703

M3 - Article

VL - 9

SP - 914

EP - 921

JO - IEEE Sensors Journal

JF - IEEE Sensors Journal

SN - 1530-437X

IS - 8

M1 - 5153565

ER -