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    Methods for improved heading estimation
    21.
    发明授权
    Methods for improved heading estimation 有权

    公开(公告)号：US10393542B2

    公开(公告)日：2019-08-27

    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

    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.

    Collaborative creation of indoor maps
    22.
    发明授权
    Collaborative creation of indoor maps 有权

    公开(公告)号：US10352707B2

    公开(公告)日：2019-07-16

    申请号：US15650747

    申请日：2017-07-14

    Applicant: TRX SYSTEMS, INC.

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

    IPC: G01C21/20

    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.

    COLLABORATIVE CREATION OF INDOOR MAPS
    23.
    发明申请
    COLLABORATIVE CREATION OF INDOOR MAPS 审中-公开

    公开(公告)号：US20170370728A1

    公开(公告)日：2017-12-28

    申请号：US15650747

    申请日：2017-07-14

    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.

    Collaborative creation of indoor maps
    25.
    发明授权
    Collaborative creation of indoor maps 有权

    公开(公告)号：US09733091B2

    公开(公告)日：2017-08-15

    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.

    METHODS RESOLVING THE ELEVATION OF A TRACKED PERSONNEL OR ASSETS
    27.
    发明申请
    METHODS RESOLVING THE ELEVATION OF A TRACKED PERSONNEL OR ASSETS 有权
    解决追踪人员或资产的方法的方法

    公开(公告)号：US20130332106A1

    公开(公告)日：2013-12-12

    申请号：US13916024

    申请日：2013-06-12

    Applicant: TRX Systems, Inc.

    Inventor： John Karvounis ,  Jared Napora ,  Benjamin E. Funk ,  Dan Hakim ,  Christopher Giles ,  Carole Teolis

    IPC: G01C5/00

    CPC classification number: G01C5/06 ,  G01C5/00 ,  G01C21/206

    Abstract: Methods and systems are described for determining the elevation of tracked personnel or assets (trackees) that can take input from mounted sensors on each trackee (including barometric, inertial, magnetometer, radio frequency ranging and signal strength, light and GPS sensors), external constraints (including ranging constraints, feature constraints, and user corrections), and terrain elevation data. An example implementation of this method for determining elevation of persons on foot is described. But this method is not limited to computing elevation of personnel or to on foot movements.

    Abstract translation: 描述了用于确定跟踪人员或资产（跟踪者）的高度的方法和系统，可以从每个跟踪器上的安装的传感器（包括气压，惯性，磁力计，射频测距和信号强度，光和GPS传感器），外部约束 （包括测距约束，特征约束和用户校正）和地形高程数据。 描述了用于确定步行人员的仰角的该方法的示例性实现。 但这种方法并不限于人员的升高或脚步的运动。

    METHODS FOR IMPROVED HEADING ESTIMATION
    28.
    发明申请
    METHODS FOR IMPROVED HEADING ESTIMATION 有权
    改进的估计方法

    公开(公告)号：US20130332098A1

    公开(公告)日：2013-12-12

    申请号：US13915998

    申请日：2013-06-12

    Applicant: TRX Systems, Inc.

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

    IPC: G01C25/00

    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.

    Abstract translation: 通过将磁性传感器360度旋转以捕获磁数据来校准身体磨损的磁性传感器的方法; 如果旋转不能产生包含在x-y平面中的圆，将球体拟合到捕获的数据; 根据球体的中心确定偏移量; 并移除在z方向上的偏移。 通过确定传感器在一个位置的方向来计算磁传感器的磁道可靠性; 转换两个参考帧之间的方向; 测量与该地点的磁场有关的第一个矢量; 当检测到第二位置时，处理第一矢量以生成虚拟矢量; 测量与第二位置处的地球的磁场相关联的第二矢量; 以及基于所述虚拟矢量和所述第二矢量的比较来计算所述第二位置处的磁道的可靠性。

    VALIDATING AND UPDATING BUILDING MODELS WITH PATH DATA
    30.
    发明申请
    VALIDATING AND UPDATING BUILDING MODELS WITH PATH DATA 审中-公开

    公开(公告)号：US20200372707A1

    公开(公告)日：2020-11-26

    申请号：US16989287

    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.

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