VIBRATION DISPLACEMENT CALCULATION SYSTEM AND METHOD THEREOF, ENABLING EXACT MEASUREMENT OF VIBRATION DISPLACEMENT THROUGH DIRECT MEASUREMENT OF VIBRATION DISPLACEMENT OF VIBRATING BODY

摘要

PURPOSE: A vibration displacement calculation system and a method thereof are provided to facilitate manufacture while simplifying structure and reducing the cost of a circuit, and to measure exact vibration displacement by directly measuring the vibration displacement of a vibrating body without using a statistical method. CONSTITUTION: A vibration displacement calculation system comprises a plate(410) vibrating in a state of being attached to a vibrating body(400); a light-emitting part(420) installed to a position spaced apart from the plate, to illuminate light toward the plate; a light-receiving part(430) parallel with the light-emitting part, to receive the light reflected from reflecting parts of the plate and to output a current pulse signal corresponding to the quantity of light received; and a vibration displacement calculation unit(440) calculating the vibration displacement of the vibrating body via the use of the current pulse signal output from the light-receiving part. Shadow parts and the reflecting parts are alternately formed to the plate.