Abstract:
The present invention discloses an apparatus for estimating a pedestrian direction by using pattern recognition and a method for estimating a direction by using this apparatus. An embodiment of the present invention includes a database that stores behavior pattern information for user behavior pattern determination and direction pattern information for estimating a user movement direction; a sensor unit that senses acceleration information, three-axis terrestrial magnetism information, and rotation information from a behavior of the moving user; a behavior pattern determination unit that determines one behavior pattern corresponding to the behavior of the moving user in the behavior pattern information stored in the database based on the sensing result; and a direction estimation unit that estimates the user movement direction by comparing the three-axis terrestrial magnetism information and the rotation information with respect to the determined behavior pattern to the direction pattern information stored in the database.
Abstract:
본 발명은 고도 측정이 가능한 휴대 단말 및 이를 이용한 고도 측정 방법에 관한 것이다. 본 발명에 따른 고도 측정이 가능한 휴대 단말은, 기압 정보를 수신받는 기압정보 수신부; 상기 기압정보 수신부에서 수신된 기압 정보에 의해 바이어스 기압을 산출하는 기압 보정부; 및 상기 바이어스 기압이 적용된 보정 기압이 출력되는 기압센서;를 포함한다.
Abstract:
The present invention relates to a method for measuring altitude using virtual calibration, capable of obtaining accurate information on a floor where a portable device is positioned in a high-rise building by measuring the altitude using an atmospheric pressure sensor installed in the user device without a network like an existing way, and a portable device performing the same. The objective of the present invention can be achieved by providing the method for measuring the altitude of a portable device using virtual calibration comprising (a) a step of receiving a satellite navigation signal; (b) a step of determining whether or not a user enters the dead area of satellite navigation while tracking the position of the user using the satellite navigation; (c) a step of storing an initial altitude value and an initial atmospheric pressure value at the start position of the dead area of the satellite navigation; and (d) a step of estimating the altitude of the user through the variation of an atmospheric pressure value measured by the atmospheric pressure sensor of the user terminal based on the initial altitude value and the initial atmospheric value.