Development of TV-Digital Image Streak Camera

Research Project

Project/Area Number	62850006
Research Category	Grant-in-Aid for Developmental Scientific Research
Allocation Type	Single-year Grants
Research Field	物理計測・光学
Research Institution	KYUSHU UNIVERSITY
Principal Investigator	MURAKAMI Terutoshi Faculity of Engineering, KYUSHU UNIVERSITY, 工学部, 教授 (70037696)
Co-Investigator(Kenkyū-buntansha)	石川宗晴興和, 総合科学研究所, 研究員牧野美佐男興和, 調布研究所, 研究員 HATANO Sachiko Faculity of Engineering, KYUSHU UNIVERSITY, 工学部, 教務員 HARADA Yasuhiro Faculity of Engineering, KYUSHU UNIVERSITY, 工学部, 助手 (80198928) NAGAYAMA Kunihito Faculity of Engineering, KYUSHU UNIVERSITY, 工学部, 助教授 (20040446) MAKINO Misao Chofu Laboratories, KOWA ISHIKAWA Muneharu Kowa Research Institute, KOWA
Project Period (FY)	1987 – 1988
Project Status	Completed (Fiscal Year 1988)
Budget Amount *help	¥3,700,000 (Direct Cost: ¥3,700,000) Fiscal Year 1988: ¥1,100,000 (Direct Cost: ¥1,100,000) Fiscal Year 1987: ¥2,600,000 (Direct Cost: ¥2,600,000)
Keywords	Particle Measurement / Particle Motion / Streak Camera / ディジタル画像流しカメラ / ディジタルストリークカメラ / 微粒子運動
Research Abstract	The purpose of this project is the development of the TV-Streak camera System to measure the position of moving particles as a function of time continuously. In this system the time is read in terms of the line number of the scanning, and the one dimensional moving position is read on the scanning lines of the TV-system. The resulted relation between position and time is displayed as t(time) - x(position) diagram on the CRT, and the velocity and acceleration of the particle is obtained directly by a personal computer. Some types of conventional TV-camera are examined in the point of cost and easy handling, and the MOS type Solid State imaging Device is selected as the most appropriate camera for this aim. However, this camera encounter a porblem of sensitivity for measurement of small particle, because of the low energy light scattering. The high energy argon laser is used to irradiate the particle, then the stray light becomes necessarily larger, and the special technique is employed to get high SNR. An excellent performance is found in the use of MOS camera as that a sharp brilliant line for particle's trace is generated on the CRT image. This fact is very useful for analysis of the trajectory of particle motion, because it dispense with additional image processing. Theoretical analysis of of the whole of the measuring mechanism is performed. It is found that the accuracy of the measurements is affected by a number of solid elements, image persistency, smear effect, and matching of pixel number with memory number. As a new knowledge, the interference fringe is found in the resultant image, which is related to the size of the particle. The relation will be studied more precisely, and the simultaneous measurement of trace and size of the moving particle will be developed.