Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2011.07a
- /
- Pages.1680-1681
- /
- 2011
Large areal particle counting system with CMOS image sensor
CMOS 이미지 센서를 이용한 광영역 입자 계수기
- Lee, Seung-Jun (School of Electrical Engineering and Computer Science, Seoul National University) ;
- Seo, Yeong-Tai (School of Electrical Engineering and Computer Science, Seoul National University) ;
- Ko, Yul (School of Electrical Engineering and Computer Science, Seoul National University) ;
-
Ji, Chang-Hyeon
(School of Electronics Engineering, Ewha Womans University) ;
-
Kim, Yong-Kweon
(School of Electrical Engineering and Computer Science, Seoul National University)
- 이승준 (서울대학교 전기컴퓨터 공학부) ;
- 서영태 (서울대학교 전기컴퓨터 공학부) ;
- 고율 (서울대학교 전기컴퓨터 공학부) ;
-
지창현
(이화여자대학교 전자공학과) ;
-
김용권
(서울대학교 전기컴퓨터 공학부)
- Published : 2011.07.20
Abstract
In this paper, particle counting system using a CMOS image sensor is demonstrated. The system utilizes a linear photodetector array as a detection element. Therefore, the particles are detected by large detection region, in contrast to a single detector in conventional particle counting devices, while maintaining the sensitivity. The advantage of proposed system is that particles are detected in a relatively large area without using the particle focusing method. Also, proposed system can be easily integrated with a microfluidic chip by attaching the device underneath the bottom plate of the microfluidic chip. Detection of polystyrene microbeads has been tested at a flow rate of 4.89mm/s. For 21 measurements, proposed system showed an average count error of 7.29% and a standard deviation of 4.74%. Potentially, the proposed system can detect even smaller particles simply by utilizing a higher resolution CMOS image sensor.
Keywords