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This project uses an HC-SR04 ultrasonic sensor to measure how close an object is. A buzzer and LED react depending on the distance, similar to a car parking sensor. < 10 cm → buzzer and LED stay on.

Abstract: Keeping a constant watch over prohibited areas for challenging. Getting people to watch over places manually might be cheaper, but it’s not always dependable for keeping an eye on big areas.

Abstract: Ultrasonic guided wave detection technology is one of the most effective damage identification methods in structural health monitoring (SHM), but external factors will cause errors during ...

Sonair, a developer of advanced sensing technology, announced it will ship ADAR (acoustic detection and ranging) to manufacturers in Asia, Europe and North America. ADAR features a sensor that uses ...

OSLO, Norway, Sept. 17, 2025 – As autonomous robots enter warehouses, hospitals and public spaces, the need for safe human-machine collaboration is growing fast. That’s exactly what Sonair’s ADAR ...