Smart Stick for blind with features: Obstacle Detection, Water Sensing, Stick Searching & Smart Decision Making
This is an Arduino-based smart stick that assists blind people by providing four crucial features: Obstacle Detection, Water Sensing, Stick Searching, Smart Decision Making.
Credit: The idea to incorporate the aforementioned four features was inherited from the Ultrasonic Blind Walking Stick Project by Neon Projects. However, the arduino code and the working model shown in this repository is an indepedent work of the repository owner.
The stick rings a different type of buzzer to execute each of the below mentioned features:
Obstacle Detection : When an object is detected within 3 meter range of the stick, a buzzer rings. For this project, only a single HC-SR04 Ultrasonic Sensor Module was used. Thus, it can detect obstacle within 15 degree sector of the sensor. Video Link
Water Sensing : When the base of the stick touches any water or liquid element, a buzzer rings. This was done using the Soil Moisture Hygrometer Detection Module for Arduino. Video Link
Stick Searching : When the blind needs to search for his stick, he could press an IR Remote button. This will ring a ringtone at the active buzzer on the stick. The sound of this ringtone will enable the blind to search for his stick. Video Link
Smart Decision Making : If all three features need to be triggered at the same time then the priority is given as :
Stick Searching > Water Sensing > Obstacle Sensing Video Link
It is because before alarming the blind about a 3m distant object, it is more important to give him notice of the impending water. Moreover, if the blind wants to use Stick Searching feature then the rest two features will come in no use.