A design of blind-guide crutch based on multi-sensors

This paper designed a blind-guide system based on the principle of the ultrasonic distance measurement, using a STC15F2K60S2 microcontroller as the core control device. It can detect obstacles overhead, in front, in right front and in left front using three ultrasonic ranging modules. Acquiring and processing the distance information by the MCU, it alarms the user through the voice and the vibration. The system improves the timeliness and accuracy of alarm, and can assist the visual impaired in avoiding obstacles, walking safely and faster.