"The front end of the guide rod is equipped with an ultrasonic ranging device, just like a radar. When the obstacle is less than one meter away, it will automatically remind the user. " Zhang Kai, the head of the development team of "Intelligent Blind Guide" and a fourth-year undergraduate student from the School of Information Engineering, China Geo University, said.

This "intelligent tour guide stick" has two other functions: first, it is equipped with a GPS positioning device, which is convenient for the families of the blind to use the mobile phone map to query the location of the blind; Second, when the blind person falls, the guide stick can immediately play the sound of "I fell, please help" repeatedly. If the fall time exceeds 15 seconds, the guide rod will automatically call the blind family.