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 […]
Sonar
What sensors are in a smart cane? Pt 1
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 […]
What types of sensors are used in underwater navigation and exploration? (Part 1 of 2)
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 […]
