Abstract
An analog front-end of a fire detector, which is comprised of a smoke detector, a heat detector and an ADC, is proposed. The smoke detector with active pixel structure works by optical detection measuring the amount of IR LED light scattered by smoke particles. It achieves the reduction of the mismatch from process variation, the influence of dark current and the reset noise by correlated double sampling scheme. The heat detector is a voltage divider consisting of a negative temperature coefficient thermistor and two resistors.It outputs the voltage corresponding to ambient temperature.Each output voltage from the two detectors is alternately converted into an 8-bit code by a successive approximation ADC every 1 second. The test chip was fabricated in 0.35-μm CMOS process and tested in optical chamber. It can detect smoke density range from 4 %/m to 25 %/m with ± 1 %/m accuracy and ambient temperature range from 25 °C to 95 °C with ± 1 °C accuracy. Maximum power consumption is 71 μW.
| Original language | English |
|---|---|
| Title of host publication | 2008 IEEE Sensors, SENSORS 2008 |
| Pages | 772-775 |
| Number of pages | 4 |
| DOIs | |
| Publication status | Published - 2008 Dec 1 |
| Event | 2008 IEEE Sensors, SENSORS 2008 - Lecce, Italy Duration: 2008 Oct 26 → 2009 Oct 29 |
Publication series
| Name | Proceedings of IEEE Sensors |
|---|
Other
| Other | 2008 IEEE Sensors, SENSORS 2008 |
|---|---|
| Country | Italy |
| City | Lecce |
| Period | 08/10/26 → 09/10/29 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering
Cite this
}
An analog front-end of a fire detection SoC for a fire alarm system. / Cheon, Jimin; Lee, Inhee; Lee, Jeonghwan; Chae, Youngcheol; Han, Gunhee; Yoo, Youngsin.
2008 IEEE Sensors, SENSORS 2008. 2008. p. 772-775 4716555 (Proceedings of IEEE Sensors).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
TY - GEN
T1 - An analog front-end of a fire detection SoC for a fire alarm system
AU - Cheon, Jimin
AU - Lee, Inhee
AU - Lee, Jeonghwan
AU - Chae, Youngcheol
AU - Han, Gunhee
AU - Yoo, Youngsin
PY - 2008/12/1
Y1 - 2008/12/1
N2 - An analog front-end of a fire detector, which is comprised of a smoke detector, a heat detector and an ADC, is proposed. The smoke detector with active pixel structure works by optical detection measuring the amount of IR LED light scattered by smoke particles. It achieves the reduction of the mismatch from process variation, the influence of dark current and the reset noise by correlated double sampling scheme. The heat detector is a voltage divider consisting of a negative temperature coefficient thermistor and two resistors.It outputs the voltage corresponding to ambient temperature.Each output voltage from the two detectors is alternately converted into an 8-bit code by a successive approximation ADC every 1 second. The test chip was fabricated in 0.35-μm CMOS process and tested in optical chamber. It can detect smoke density range from 4 %/m to 25 %/m with ± 1 %/m accuracy and ambient temperature range from 25 °C to 95 °C with ± 1 °C accuracy. Maximum power consumption is 71 μW.
AB - An analog front-end of a fire detector, which is comprised of a smoke detector, a heat detector and an ADC, is proposed. The smoke detector with active pixel structure works by optical detection measuring the amount of IR LED light scattered by smoke particles. It achieves the reduction of the mismatch from process variation, the influence of dark current and the reset noise by correlated double sampling scheme. The heat detector is a voltage divider consisting of a negative temperature coefficient thermistor and two resistors.It outputs the voltage corresponding to ambient temperature.Each output voltage from the two detectors is alternately converted into an 8-bit code by a successive approximation ADC every 1 second. The test chip was fabricated in 0.35-μm CMOS process and tested in optical chamber. It can detect smoke density range from 4 %/m to 25 %/m with ± 1 %/m accuracy and ambient temperature range from 25 °C to 95 °C with ± 1 °C accuracy. Maximum power consumption is 71 μW.
UR - http://www.scopus.com/inward/record.url?scp=67649921914&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=67649921914&partnerID=8YFLogxK
U2 - 10.1109/ICSENS.2008.4716555
DO - 10.1109/ICSENS.2008.4716555
M3 - Conference contribution
AN - SCOPUS:67649921914
SN - 9781424425808
T3 - Proceedings of IEEE Sensors
SP - 772
EP - 775
BT - 2008 IEEE Sensors, SENSORS 2008
ER -