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    METHODS FOR GENERATING AND UPDATING BUILDING MODELS
    11.
    发明申请
    METHODS FOR GENERATING AND UPDATING BUILDING MODELS 有权

    公开(公告)号：US20220139031A1

    公开(公告)日：2022-05-05

    申请号：US17475935

    申请日：2021-09-15

    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.

    Mapping complex building models
    12.
    发明授权
    Mapping complex building models 有权

    公开(公告)号：US10740965B2

    公开(公告)日：2020-08-11

    申请号：US16428519

    申请日：2019-05-31

    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
    14.
    发明授权
    Methods for improved heading estimation 有权

    公开(公告)号：US09739635B2

    公开(公告)日：2017-08-22

    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 ,  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.

    Reducing elevation error with environmental pressure anomaly compensation
    16.
    发明授权
    Reducing elevation error with environmental pressure anomaly compensation 有权
    降低高程误差与环境压力异常补偿

    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。

    METHOD TO SCALE INERTIAL LOCATION DATA USING DIRECTIONAL AND/OR SCALE CONFIDENCE CONSTRAINTS
    17.
    发明申请
    METHOD TO SCALE INERTIAL LOCATION DATA USING DIRECTIONAL AND/OR SCALE CONFIDENCE CONSTRAINTS 审中-公开
    使用方向和/或规模的信任约束来定量实际位置数据的方法

    公开(公告)号：US20140278080A1

    公开(公告)日：2014-09-18

    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

    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。

    SYSTEMS AND METHODS FOR REDUNDANT INTEGRITY MONITORING
    18.
    发明申请
    SYSTEMS AND METHODS FOR REDUNDANT INTEGRITY MONITORING 有权

    公开(公告)号：US20230065658A1

    公开(公告)日：2023-03-02

    申请号：US17894660

    申请日：2022-08-24

    Applicant: TRX Systems, Inc.

    Inventor： Jonathan Fetter-Degges ,  John Karvounis ,  Carole Teolis

    IPC: G01S19/21 ,  G01S19/08 ,  G01S19/37

    Abstract: System, computer program products, and methods for detecting and compensating for sensor interference. Sensor interference may result from environmental interference or from electronic signal interference. Sensor location input may be adapted or rejected when interference is detected. The system can monitor the accuracy, as well as the integrity, of all navigation sensors. The system can also automatically eliminate the faulty or compromised data from a final navigation solution.

    Fusion of sensor and map data using constraint based optimization
    20.
    发明授权
    Fusion of sensor and map data using constraint based optimization 有权

    公开(公告)号：US10571270B2

    公开(公告)日：2020-02-25

    申请号：US15670881

    申请日：2017-08-07

    Applicant: TRX SYSTEMS, INC.

    Inventor： Daniel Hakim ,  Christopher Giles ,  John Karvounis ,  Benjamin Funk ,  Jared Napora ,  Carole Teolis

    IPC: G01C21/12 ,  G01S5/02 ,  G01C21/16 ,  G01C21/20 ,  H04W64/00

    Abstract: Disclosed herein are methods and systems for fusion of sensor and map data using constraint based optimization. In an embodiment, a computer-implemented method may include obtaining tracking data for a tracked subject, the tracking data including data from a dead reckoning sensor; obtaining constraint data for the tracked subject; and using a convex optimization method based on the tracking data and the constraint data to obtain a navigation solution. The navigation solution may be a path and the method may further include propagating the constraint data by a motion model to produce error bounds that continue to constrain the path over time. The propagation of the constraint data may be limited by other sensor data and/or map structural data.

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