MINUTE MOVEMENT SENSING DEVICE USING INFRARED SENSOR AND SPATIAL FILTER

摘要

PURPOSE: A minute movement sensing device using an infrared sensor and a spatial filter is provided, which can sense a minute movement of an object radiating an infrared ray without other units like a chopper. CONSTITUTION: The minute movement sensing device comprises an infrared ray sensor part(100) and a spatial filter(200) in a shape of a plate which is arranged in the front of the sensor part and has a number of holes. A sensing control part(300) discriminates a minute movement of an object radiating an infrared ray by processing an electrical signal from the sensor part. An output part outputs a sensing result according to a control signal of the sensing control part, and a power supply part supplies a power to each part. The infrared sensor part is constituted with a pyroelectric infrared sensor.