Collision prevention
Hardware solution to prevent collisions based on piezoelectric sensors
(Text in Englisch)
Knock sensor
Operation principle of piezoelectric sensors explained through teh example of a knock sensor (in Englisch)
Ultrasound sensors
Application and products introduced by SNT Sensortechnik AG
(in German)
Acoustic monitoring of bearing
Timely recognition of bearing damages and lack of lubricatione agents by using an ultrasound measuring system
Flow measurement
Principle of operation explained by ENDRESS + HAUSER
(in English)
Nondestructive Testing
Biomedical imaging
explanation of the technology
(in English)
https://www.nibib.nih.gov/science-education/science-topics/ultrasound

Ultrasound biometric sensor
The Technology, see
www.sonavation.com/ultrasound-biometric-sensor/
Touch Sensor Under Glass Technology
www.sonavation.com/touch-under-glass/