公开(公告)号：US10088313B2

公开(公告)日：2018-10-02

申请号：US15677897

申请日：2017-08-15

Applicant: TRX SYSTEMS, INC.

Inventor： Travis Young ,  John Riley Miller ,  John Karvounis ,  Dan Hakim ,  Jared Napora ,  Benjamin Funk ,  Carole Teolis

IPC: G01C17/38 ,  G01S5/02 ,  G01S19/42

Abstract: A method for computing a correction to a compass heading for a portable device worn or carried by a user is described. The method involves determining a heading for the device based on a compass reading, collecting data from one or more sensors, determining if the device is indoors or outdoors based on the collected data, and correcting the heading based on the determination of whether the device is indoors or outdoors.

公开(公告)号：US09823068B2

公开(公告)日：2017-11-21

申请号：US15040996

申请日：2016-02-10

Applicant: TRX Systems, Inc.

Inventor： John Karvounis ,  Jared Napora ,  Dan Hakim ,  Carole Teolis ,  John Riley Miller ,  Benjamin E. Funk

IPC: G01C5/06

CPC classification number: G01C5/06

Abstract: A method for determining an environmental pressure change affecting a pressure sensor within a portable device to determine an elevation of the portable device is disclosed. The method involves estimating a location of the mobile device, estimating an atmospheric pressure associated with the mobile device at a server based on data indicative of atmospheric pressure received from the mobile device, and generating the elevation of the mobile device based on the atmospheric pressure associated with the mobile device and reference data indicative of an absolute elevation reference. The absolute elevation determined may be based on the estimated location of the mobile device and elevation data obtained from a reference map.

公开(公告)号：US09322648B1

公开(公告)日：2016-04-26

申请号：US14714209

申请日：2015-05-15

Applicant: TRX Systems, Inc.

Inventor： John Karvounis ,  Jared Napora ,  Dan Hakim ,  Carole Teolis ,  John Riley Miller ,  Benjamin E. Funk

IPC: G01C5/06

CPC classification number: G01C5/06

Abstract: A method for determining an environmental pressure change affecting a pressure sensor within a portable device to determine an elevation of the portable device is disclosed. The method involves sampling pressure data from at least one stationary pressure sensor in an area surrounding a location of the device, wherein the stationary pressure sensor in not within the portable device. The sampled pressure data is then interpolated to a time interval and a difference is computed between the interpolated pressure data over each time interval to determine a differential pressure. The location of the stationary pressure sensor is determined and the differential pressure is added to a pressure map affecting data near the location. The environmental pressure change is then computed over any interval at the location and subtracted from a pressure measurement of the pressure sensor before computing an elevation of the portable device.

Abstract translation: 公开了一种用于确定影响便携式设备内的压力传感器以确定便携式设备的高度的环境压力变化的方法。 该方法包括从围绕设备的位置的区域中的至少一个固定压力传感器采样压力数据，其中固定压力传感器不在便携式设备内。 然后将采样的压力数据内插到时间间隔，并且在每个时间间隔之间的内插压力数据之间计算差以确定差压。 确定固定压力传感器的位置，并将压差加到影响位置附近的数据的压力图上。 然后在该位置的任何间隔上计算环境压力变化，并在计算便携式设备的高程之前从压力传感器的压力测量中减去该压力变化。