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Sonar

How do time-of-flight sensors work?

March 8, 2022 By Randy Frank

Using the time-of-flight (ToF) principle, a ToF sensor measures the distance between the sensor and an object. The sensor emits a signal that is reflected off an object and then detects the time for a round trip to occur. Typically, either light or sound waves can provide the transmitted signal.  In either case, the distance […]

Filed Under: Distance, Featured, Frequently Asked Question (FAQ), Image sensing, Infrared, laser, RADAR/LiDAR, Sonar, Time-of-Flight, Ultrasonic Tagged With: time-of-flight

What sensors are in a smart cane? Pt 1

February 7, 2022 By Randy Frank

Blind or visually impaired individuals have to rely on other senses and typically have heightened capability – especially for hearing and touch. Using a white cane provides feedback in both of these areas. World Health Organization (WHO) data says that there are more than 253 million visually impaired people worldwide. Many of these individuals rely […]

Filed Under: Featured, Frequently Asked Question (FAQ), Infrared, Sonar, Ultrasonic Tagged With: torch-it

What types of sensors are used in underwater navigation and exploration? (Part 1 of 2)

May 22, 2019 By Randy Frank

Unlike land or airborne vehicles that can use radar and cameras to locate and identify objects underwater navigation and exploration present greater challenges. If underwater visibility is good, cameras provide a good source of information. Increasing resolution and the number of cameras are among the improvements that have been made in the recent past to […]

Filed Under: Featured, Frequently Asked Question (FAQ), RADAR/LiDAR, Sonar, Time-of-Flight Tagged With: J W Fishers

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