Patent Title
Infrared sensor module using rotating ultrasonic motor
Operation principle
ntermittent infrared impinging on the infrared sensor makes enable continuous detection by rotating the Fresnel lens at a low speed using our rotating ultrasonic motor. This is the only sensor in the world that solves the problems of conventional infrared sensor that can’t detect the person who does not move.
Characteristics
- An infrared sensor using a low-speed ultrasonic motor in order to prevent the noise of the infrared signal
- No heat is generated when the ultrasonic motor drive
- Low-power rotating motor (<0.5W)
- Low noise
- No EMI noise
- Expandable application range by integrated module manufacturing
- Continuous detection is available when heat source does not move
- Activity can be detected
Applications
- Entrance hall sensors, street lights, underground parking fluorescent lamps
- Active surveillance system in conjunction with CCTV
Structure of RT-PIR sensor
Comparison of conventional PIR sensors and our REAL-TIME PIR sensor
conventional PIR sensor
Click video
- As you can see in the above video, the output signal occurs when PIR sensor gets the body signal
- However, when a man does not move, the signal is extinguished and PIR sensor can’t detect him
Real-time PIR sensor
Click video
- As the experimental results described above video, it is possible to continuous detect a body signal using real time PIR sensor developed by our company.
- Activity change is detectable by the signal change according to the amount of body motion.