I want to invent a magical headset
I want to invent a guide headset. Nature has given mankind a lot of inspiration, and mankind has invented and created something as a result. For example, human imitating birds invented airplanes, and imitating fish invented submarines. Inventions are not just for scientists. I also want to invent something. Recently, I read in a book that blind people have lost their eyes and cannot see what is happening around them. Accidents are prone to occur when crossing the road. Although some blind people have guide dogs, the transformation of a guide dog from an ordinary dog ??to a well-trained guide dog is not only a waste of money, but also time-consuming and labor-intensive. The guide earphones I want to invent are cheap and very practical. , whenever the owner turns on the switch, it starts to work. The guiding earphone first emits ultrasonic waves to the surroundings. The ultrasonic waves push forward like waves. When encountering danger, it is immediately transmitted to the receiver of the guiding earphone, and the guiding earphone immediately informs Its owner: "Please change the route if there is danger ahead!" This greatly reduces the possibility of accidents for the blind man. The invention of guide earphones is all thanks to bats. More than a hundred years ago, scientists discovered that bats could fly at night. After a series of explorations, the term "ultrasound" was born. I hope that in the future I will invent a machine similar to what I imagine now to benefit mankind, allowing blind friends to walk as conveniently as us.