172876 ⎘
Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves; Systems of measurement, based on relative movement of the target; Discriminating between fixed and moving objects or between objects moving at different speeds for presence detection by comparing echos in different sonar periods
METHOD AND SYSTEM FOR IDENTIFYING A STATIONARY TARGET WITH ULTRASOUND
#2HUMAN PRESENCE DETECTION
#3OBJECT DETECTION DEVICE
#4METHOD AND A DEVICE FOR EXAMINING THE ENVIRONMENT OF A VEHICLE USING ULTRASONIC SIGNALS
#5Method and apparatus for detecting a moving object and object counting system
#6Method for avoiding noise in an apparatus for space monitoring by using sound signal
#7Computational noise compensation for ultrasonic sensor systems
#8Method and system for smart navigation for the visually impaired
#9Ultrasonic testing device, method, program, and ultrasonic testing system
#10Proximity detection
#11Motion detector
#12Real-time warning for distracted pedestrians with smartphones
#13Object detection method using ultrasonic waves and object detection apparatus
#14Integrated motion detection using changes in acoustic echo path
#15Ultrasonic motion detection
#16Security system and method using measurement of acoustic field variation
#17Method and System for Detecting an Occupant Using Reflected Signals
#18System and method for detecting obstacles for vehicles
#19Movement and presence detection systems and methods using sonar