FALLING OBJECT SENSING DEVICE AND METHOD

摘要

Disclosed are a falling object sensing device and a sensing method for improving safety for an user. According to an embodiment of the present invention, the falling object sensing device includes: a transmitting unit for transmitting an nth falling object sensing signal (provided that n is a natural number); a receiving unit for receiving the nth falling object sensing signal; a controlling unit for generating an nth time differences information using the transmitting time and the receiving time of the nth falling object sensing signal, and sensing an falling object using a sequential value of the nth time differences information.