Onderzoekers ontwikkelen sensoren die beweging detecteren zonder stroom of batterijen

Researchers at Georgia Tech have developed passive ultrasonic sensors that require no batteries or external power. The devices generate ultrasound signals by converting mechanical energy from physical contact or nearby motion through piezoelectric elements, allowing them to detect movement and characterize contact events. With zero power consumption during idle periods and the ability to function when embedded in walls or machinery, these sensors are particularly suited for structural health monitoring and industrial applications where maintenance access is limited.