SHORT DISTANCE ESTIMATION DEVICE USING PLURAL SENSORS, AND THE METHOD THEREOF

摘要

The present invention relates to a device and a method thereof to measure a close distance by using a plurality of sensors. The purpose of the present invention is to receive a Bluetooth signal and a sound wave transmitted from a transmitting device and measure a distance between a receiving part and the transmitting device based on the sound wave and the Bluetooth signal but measure the distance based on the identity of a frequency in case of the sound wave and measure the distance based on electric intensity in case of the Bluetooth signal. The device includes the receiving part receiving the Bluetooth signal and the sound wave from the transmitting part.