A motion monitor using coherent or partially coherent light passing through an optical fiber which is in contact or close to an object whose motion is to be monitored. An optical speckle pattern is formed near the output of the optical fiber which pattern changes as the fiber moves in response to the motion of the object being monitored. An optical detector monitors all or a part of the speckle pattern and electronically processes the optical detector's electrical output signals to derive information on the status of the object being monitored.
* 8206324 Method for monitoring living body activities, and optical fiber type flat shaped body sensor, garment styled optical fiber type flat shaped body sensor and human body fitted optical fiber type flat shaped body sensor used for the same
* 2008/0221,488 METHOD FOR MONITORING LIVING BODY ACTIVITIES, AND OPTICAL FIBER TYPE FLAT SHAPED BODY SENSOR, GARMENT STYLED OPTICAL FIBER TYPE FLAT SHAPED BODY SENSOR AND HUMAN BODY FITTED OPTICAL FIBER TYPE FLAT SHAPED BODY SENSOR USED FOR THE SAME
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