Haptic Vision System with Ultrasonic Ability

A person is allowed to navigate hallways and around large objects without sight using this ultrasonic haptic vision system which utilizes an ultrasonic rangefinder that interfaces with the user through small vibrating motors mounted on the user’s head.

A sixth sensory system is demonstrated by this project which can easily interact with the body in a user friendly and intuitive manner. In order to provide feedback to a program running on the computer that keeps track of the sensory data taken from the mobile user mounted sensor system, RF transmission was implemented. This makes all the distances between the surrounding obstacles and the user wearing the hat to be observed by the person sitting at the computer.

For taking the sensory data at discrete points around the user, the rangefinder rotates on a motor on top of the hard hat. A DS1532 9V battery is used to power the required hardware and the hat to make this totally mobile and can serve its purpose due to the unrestricted movements by the wires length. The MCU easily reads the PWM output which produces digital signal. This avoids noise on the line to MCU.

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