Blind umbrella / health care

This is a bind umbrella.It is an trutch and an umbrella.When the blind man walk in a sunny day,he can rotating the umbrella’s handle, the umbrella’s cloth will be removed. When the blind man walk in a rainy day, it can be a umbrella. This blind umbrella’s handle built-in a ultrasonic sensors,
it through the vibration speed to sensing object and near the far distance to themselves.Besides,the handle have a GPS, the blind man can use it to give a signal to their family.By the way, the umbrella’s cloth is made up of 3M reflective material. This blind umbrella can help the blind man walk in any weather and protect their safety