Mr. Isao Sato Profile

Isao Sato

at Keio Univ

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Proceedings Article | 25 October 2004 Paper

Noncontact respiration-monitoring system using fiber grating sensor

Isao Sato, Masato Nakajima

Proceedings Volume 5603, (2004) https://doi.org/10.1117/12.571022

KEYWORDS: Cameras, Sensors, Chest, Abdomen, CCD cameras, Projection systems, Fiber optics sensors, Motion measurement, Imaging systems, Infrared radiation

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In this research, the new non-contact breathing motion monitoring system using Fiber Grating 3-dimension Sensor is used to measure the respiratory movement of the chest and the abdomen and the shape of the human body simultaneously. Respiratory trouble during sleep brings about various kinds of diseases. Particularly, Sleep Apnea Syndrome (SAS), which restricts respiration during sleep, has been in the spotlight in recent years. However, present equipment for analyzing the blessing motion requires attaching various sensors on the patient's body. This system adopted two CCD cameras to measure the movements of projected infrared bright spots on the patient's body which measure the body form, breathing motion of the chest and breathing motion of the abdomen in detail. Since the equipment does not contact the patient's body, the patient feels incompatibility, and there is no necessity to worry about the equipment coming off. Sleep Apnea Syndrome is classified into three types by their respiratory pattern-Obstructive, Central and Mixed SAS based on the characteristic. This paper reports the method of diagnosing SAS automatically. It is thought that this method will be helpful not only for the diagnosis of SAS but also for the diagnosis of other kinds of complicated respiratory disease.

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