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    METHODS FOR GENERATING AND UPDATING BUILDING MODELS
    31.
    发明申请
    METHODS FOR GENERATING AND UPDATING BUILDING MODELS 审中-公开

    公开(公告)号：US20200372706A1

    公开(公告)日：2020-11-26

    申请号：US16989212

    申请日：2020-08-10

    Applicant: TRX Systems, Inc.

    Inventor： Travis Young ,  Daniel Hakim ,  Daniel Franchy ,  Jared Napora ,  John Karvounis ,  Jonathan Fetter Degges ,  Tim Wang ,  Benjamin Funk ,  Carole Teolis ,  Carol Politi ,  Stuart Woodbury

    IPC: G06T17/05 ,  G06F30/13

    Abstract: Systems, methods and instructions for creating building models of physical structures is disclosed. The building model may be a collection of floors defined by outlines containing regions that may be offset relative to a main region, and a collection of connectors. Connectors may have connection points for tracking, routing and sizing. Connectors may indicate elevation changes through georeferenced structural features. Signal elements may also be features that provide corrections when tracking. Feature descriptors are data that describes the structural configuration and signal elements enabling them to be matched to previously collected data in a database. User interface elements assist a user of a tracking device in collecting floor information, structural features and signal features and validating certain collected information based on previously known information. The height of floors may also be inferred based on sensor data from the tracking device.

    Methods for improved heading estimation
    33.
    发明授权
    Methods for improved heading estimation 有权

    公开(公告)号：US10393543B2

    公开(公告)日：2019-08-27

    申请号：US15649571

    申请日：2017-07-13

    Applicant: TRX SYSTEMS, INC.

    Inventor： Benjamin E. Funk ,  Dan Hakim ,  John Karvounis ,  Travis Young ,  Carole Teolis

    IPC: G01C25/00 ,  G01C17/38

    Abstract: Methods for calibrating a body-worn magnetic sensor by spinning the magnetic sensor 360 degrees to capture magnetic data; if the spin failed to produce a circle contained in an x-y plane fit a sphere to the captured data; determining offsets based on the center of the sphere; and removing the offsets that are in the z-direction. Computing a magnetic heading reliability of a magnetic sensor by determining an orientation of the sensor at one location; transforming the orientation between two reference frames; measuring a first vector associated with the magnetic field of Earth at the location; processing the first vector to generate a virtual vector when a second location is detected; measuring a second vector associated with the magnetic field of Earth at the second location; and calculating the magnetic heading reliability at the second location based on a comparison of the virtual vector and the second vector.

    METHODS FOR IMPROVED HEADING ESTIMATION
    34.
    发明申请
    METHODS FOR IMPROVED HEADING ESTIMATION 审中-公开

    公开(公告)号：US20170307404A1

    公开(公告)日：2017-10-26

    申请号：US15649571

    申请日：2017-07-13

    Applicant: TRX SYSTEMS, INC.

    Inventor： Benjamin E. Funk ,  Dan Hakim ,  John Karvounis ,  Travis Young ,  Carole Teolis

    IPC: G01C25/00 ,  G01C17/38

    CPC classification number: G01C25/00 ,  G01C17/38

    Abstract: Methods for calibrating a body-worn magnetic sensor by spinning the magnetic sensor 360 degrees to capture magnetic data; if the spin failed to produce a circle contained in an x-y plane fit a sphere to the captured data; determining offsets based on the center of the sphere; and removing the offsets that are in the z-direction. Computing a magnetic heading reliability of a magnetic sensor by determining an orientation of the sensor at one location; transforming the orientation between two reference frames; measuring a first vector associated with the magnetic field of Earth at the location; processing the first vector to generate a virtual vector when a second location is detected; measuring a second vector associated with the magnetic field of Earth at the second location; and calculating the magnetic heading reliability at the second location based on a comparison of the virtual vector and the second vector.

    METHODS FOR IMPROVED HEADING ESTIMATION
    35.
    发明申请
    METHODS FOR IMPROVED HEADING ESTIMATION 审中-公开

    公开(公告)号：US20170307403A1

    公开(公告)日：2017-10-26

    申请号：US15647004

    申请日：2017-07-11

    Applicant: TRX SYSTEMS, INC.

    Inventor： Benjamin E. Funk ,  Dan Hakim ,  John Karvounis ,  Travis Young ,  Carole Teolis

    IPC: G01C25/00 ,  G01C17/38

    CPC classification number: G01C25/00 ,  G01C17/38

    Abstract: Methods for calibrating a body-worn magnetic sensor by spinning the magnetic sensor 360 degrees to capture magnetic data; if the spin failed to produce a circle contained in an x-y plane fit a sphere to the captured data; determining offsets based on the center of the sphere; and removing the offsets that are in the z-direction. Computing a magnetic heading reliability of a magnetic sensor by determining an orientation of the sensor at one location; transforming the orientation between two reference frames; measuring a first vector associated with the magnetic field of Earth at the location; processing the first vector to generate a virtual vector when a second location is detected; measuring a second vector associated with the magnetic field of Earth at the second location; and calculating the magnetic heading reliability at the second location based on a comparison of the virtual vector and the second vector.

    Method to scale inertial location data using directional and/or scale confidence constraints
    39.
    发明授权
    Method to scale inertial location data using directional and/or scale confidence constraints 有权
    使用定向和/或缩放置信约束来缩放惯性位置数据的方法

    公开(公告)号：US08990014B2

    公开(公告)日：2015-03-24

    申请号：US14212529

    申请日：2014-03-14

    Applicant: TRX Systems, Inc.

    Inventor： Benjamin Funk ,  Dan Hakim ,  John Karvounis ,  Carole Teolis

    IPC: G01C21/16 ,  G01C21/08

    CPC classification number: G01C21/165 ,  G01C21/08

    Abstract: Methods, systems, and computer readable storage media are presented for directional scaling of inertial path data to satisfy ranging constraints. The presented techniques take into account scaling confidence information. In addition to bounding potential scale corrections based on the reliability of the inertial path and the magnetic heading confidence, the techniques bound potential scale parameters based on constraints and solve for directional scale parameters.

    Abstract translation: 呈现方法，系统和计算机可读存储介质用于方向缩放惯性路径数据以满足测距约束。 所提出的技术考虑到置信信息的扩展。 除了基于惯性路径的可靠性和磁标题置信度的边界潜在尺度校正之外，这些技术基于约束约束了潜在的尺度参数，并且解决了定向尺度参数。

    COLLABORATIVE CREATION OF INDOOR MAPS
    40.
    发明申请
    COLLABORATIVE CREATION OF INDOOR MAPS 有权
    室内合作创作

    公开(公告)号：US20140278060A1

    公开(公告)日：2014-09-18

    申请号：US14178605

    申请日：2014-02-12

    Applicant: TRX Systems, Inc.

    Inventor： Kamiar Kordari ,  Benjamin Funk ,  Carole Teolis ,  Jared Napora ,  John Karvounis ,  Dan Hakim ,  Christopher Giles ,  Carol Politi

    IPC: G01C21/20

    CPC classification number: G01C21/206

    Abstract: This disclosure provides techniques for the creation of maps of indoor spaces. In these techniques, an individual or a team with no mapping or cartography expertise can contribute to the creation of maps of buildings, campuses or cities. An indoor location system can track the location of contributors in the building. As they walk through indoor spaces, an application may automatically create a map based on data from motion sensors by both tracking the location of the contributors and also inferring building features such as hallways, stairways, and elevators based on the tracked contributors' motions as they move through a structure. With these techniques, the process of mapping buildings can be crowd sourced to a large number of contributors, making the indoor mapping process efficient and easy to scale up.

    Abstract translation: 本公开提供了用于创建室内空间地图的技术。 在这些技术中，没有绘图或制图专业知识的个人或团队可以帮助创建建筑物，校园或城市的地图。 室内定位系统可以跟踪建筑物中贡献者的位置。 当他们穿过室内空间时，应用程序可以通过跟踪贡献者的位置来自动地创建基于运动传感器的数据的地图，并且基于跟踪的贡献者的运动来推断建筑特征，例如走廊，楼梯和电梯，因为它们 移动通过一个结构。 通过这些技术，建筑物映射过程可以大量来源于大量的贡献者，使室内映射过程更加高效，易于扩展。

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