| 摘要 |
An infrared sensor module using a rotary ultrasonic motor is disclosed. The infrared sensor module using a rotary-type ultrasound motor, according to one embodiment of the present invention, comprises: an infrared sensor for detecting an object which radiates infrared rays; a piezoelectric diaphragm having an electrode structure partitioned into a pinwheel shape on a plate body formed from a piezoelectric material; the rotary ultrasonic motor including a ring-shaped rotator driven by torsional vibrations generated along the side surfaces of the piezoelectric diaphragm; a Fresnel lens rotatably provided by being coupled to the rotator so as to intermittently control the infrared rays incident in the front direction of the infrared sensor; an oscillation unit for outputting square waves required for the rotary ultrasonic motor; and a control unit for controlling the oscillation unit by using a signal detected by the infrared sensor and controlling the driving of the rotary ultrasonic motor. |
