Design and Implementation of The Blind Navigation Aids Using Ultrasonic Sensor

Visually impaired navigational aids in general still use manual tools to be less effective for blind people to navigate. Visual aids for visually impaired people using ultrasonic sensors are considered a solution to make it easier for blind people to navigate. This system is designed to work when detecting objects at a distance of 200 cm. The system produces output in sound and vibration, which will have a more excellent value when detecting objects at close range and have a small value when seeing things at a distance. The system modules are placed in several positions on the user's body to help determine the position and approximate length. This navigation aid uses ultrasonic sensors as object detectors with buzzer and vibrator as actuators and Arduino pro mini as system microcontroller. The result of this research is that the system can detect obstacle objects at a predetermined distance and find out the obstacle object's position to assist users in navigating.