公开(公告)号：US09360324B1

公开(公告)日：2016-06-07

申请号：US14804544

申请日：2015-07-21

Applicant: Texas Instruments Incorporated

Inventor： Jayawardan Janardhanan ,  Goutam Dutta ,  Varun Tripuraneni

IPC: G01C21/16 ,  G01C22/00

CPC classification number: G01C21/16 ,  G01C21/165 ,  G01C21/20 ,  G01C22/006

Abstract: A user-heading determining system (10) for pedestrian use includes a multiple-axis accelerometer (110) having acceleration sensors; a device-heading sensor circuit (115) physically situated in a fixed relationship to the accelerometer (110); an electronic circuit (100) operable to generate signals representing components of acceleration sensed by the accelerometer (110) sensors, and to electronically process at least some part of the signals to produce an estimation of attitude of a user motion with respect to the accelerometer, and further to combine the attitude estimation (750, α) with a device heading estimation (770, ψ) responsive to the device-heading sensor circuit, to produce a user heading estimation (780); and an electronic display (190) responsive to the electronic circuit (100) to display information at least in part based on the user heading estimation. Other systems, circuits and processes are also disclosed.

Abstract translation: 用于行人使用的用户航向确定系统（10）包括具有加速度传感器的多轴加速度计（110） 物理地位于与所述加速度计（110）固定关系的设备航向传感器电路（115）; 电子电路（100），其可操作以产生表示由所述加速度计（110）传感器感测到的加速度的分量的信号，并且电子处理所述信号的至少一部分以产生相对于所述加速度计的用户运动姿态的估计， 并且进一步将所述姿态估计（750，α）与响应于所述设备航向传感器电路的设备航向估计（770，ψ）组​​合以产生用户航向估计（780）; 以及响应于所述电子电路（100）至少部分地基于所述用户标题估计来显示信息的电子显示器（190）。 还公开了其它系统，电路和过程。

公开(公告)号：US20150219768A1

公开(公告)日：2015-08-06

申请号：US14686310

申请日：2015-04-14

Applicant: Texas Instruments Incorporated

Inventor： Goutam Dutta ,  Tarkesh Pande ,  Sandeep Rao ,  Deric W. Waters

IPC: G01S19/47 ,  G01S19/52 ,  G01S19/20 ,  G01S19/49

CPC classification number: G01S19/47 ,  G01C21/165 ,  G01S19/20 ,  G01S19/49 ,  G01S19/52

Abstract: Embodiments of the disclosure provide a cross coupled position engine architecture for sensor integration in a Global Navigation Satellite System. In one embodiment, a data processing engine for processing inertial sensor data within a positioning system receiver is disclosed. The data processing engine includes a first input for receiving the sensor data, and a second input for receiving a positioning data. The data processing system also includes a memory and a processor. The processor of the data processing system is coupled to the memory and to the first and second input. The processor of the data processing system is configured to calculate a net acceleration profile data from the inertial sensor data and from the positioning data. The net acceleration profile data calculated by the processor of the data processing system is used for the Global Positioning System (GPS) receiver to subsequently calculate a position and a velocity data.

Abstract translation: 本公开的实施例提供了用于全球导航卫星系统中的传感器集成的交叉耦合位置引擎结构。 在一个实施例中，公开了一种用于在定位系统接收器内处理惯性传感器数据的数据处理引擎。 数据处理引擎包括用于接收传感器数据的第一输入端和用于接收定位数据的第二输入端。 数据处理系统还包括存储器和处理器。 数据处理系统的处理器耦合到存储器和第一和第二输入端。 数据处理系统的处理器被配置为从惯性传感器数据和定位数据计算净加速度曲线数据。 由数据处理系统的处理器计算的净加速度曲线数据用于全球定位系统（GPS）接收机，以随后计算位置和速度数据。

公开(公告)号：US20160138923A1

公开(公告)日：2016-05-19

申请号：US14804544

申请日：2015-07-21

Applicant: Texas Instruments Incorporated

Inventor： Jayawardan Janardhanan ,  Goutam Dutta ,  Varun Tripuraneni

IPC: G01C21/16

CPC classification number: G01C21/16 ,  G01C21/165 ,  G01C21/20 ,  G01C22/006

Abstract: A user-heading determining system (10) for pedestrian use includes a multiple-axis accelerometer (110) having acceleration sensors; a device-heading sensor circuit (115) physically situated in a fixed relationship to the accelerometer (110); an electronic circuit (100) operable to generate signals representing components of acceleration sensed by the accelerometer (110) sensors, and to electronically process at least some part of the signals to produce an estimation of attitude of a user motion with respect to the accelerometer, and further to combine the attitude estimation (750, α) with a device heading estimation (770, ψ) responsive to the device-heading sensor circuit, to produce a user heading estimation (780); and an electronic display (190) responsive to the electronic circuit (100) to display information at least in part based on the user heading estimation. Other systems, circuits and processes are also disclosed.

Abstract translation: 用于行人使用的用户航向确定系统（10）包括具有加速度传感器的多轴加速度计（110） 物理地位于与所述加速度计（110）固定关系的设备航向传感器电路（115）; 电子电路（100），其可操作以产生表示由所述加速度计（110）传感器感测到的加速度的分量的信号，并且电子处理所述信号的至少一部分以产生相对于所述加速度计的用户运动姿态的估计， 并且进一步将所述姿态估计（750，α）与响应于所述设备航向传感器电路的设备航向估计（770，ψ）组​​合以产生用户航向估计（780）; 以及响应于所述电子电路（100）至少部分地基于所述用户标题估计来显示信息的电子显示器（190）。 还公开了其它系统，电路和过程。

公开(公告)号：US20150088419A1

公开(公告)日：2015-03-26

申请号：US14034486

申请日：2013-09-23

Applicant: Texas Instruments Incorporated

Inventor： Sachin Bhardwaj ,  Sriram Murali ,  Jaiganesh Balakrishnan ,  Jayawardan Janardhanan ,  Yogesh Shekar ,  Goutam Dutta

IPC: G01C21/16 ,  G01C21/20

CPC classification number: G01C21/165 ,  G01C21/16 ,  G01C21/20

Abstract: According to an aspect of the present disclosure, the relative attitude between an inertial measurement unit (IMU), present on a mobile device, and the frame of reference of the vehicle carrying mobile device is estimated. The estimated relative attitude is used to translate the IMU measurement to the vehicle frame of reference to determine the velocity and position of the vehicle. As a result, the vehicle position and velocity are determined accurately in the event of undocking and re-docking of the mobile device from a docking system in the vehicle. The relative attitude is estimated in terms of pitch, roll, and yaw angles.

Abstract translation: 根据本公开的一个方面，估计出现在移动设备上的惯性测量单元（IMU）与携带移动设备的车辆的参考系之间的相对姿态。 估计的相对姿态用于将IMU测量值转换为车辆参考系，以确定车辆的速度和位置。 结果，在移动设备从车辆中的对接系统脱离和重新对接的情况下，准确地确定车辆位置和速度。 根据俯仰角，俯仰角和偏航角估计相对姿态。

公开(公告)号：US20130131983A1

公开(公告)日：2013-05-23

申请号：US13745186

申请日：2013-01-18

Applicant: Texas Instruments Incorporated

Inventor： June Chul Roh ,  Deric Wayne Waters ,  Srinath Hosur ,  Goutam Dutta

IPC: G01S19/47 ,  G06F17/16 ,  G01C22/00

CPC classification number: G01S19/47 ,  G01C21/165 ,  G01C21/28 ,  G01C22/006 ,  G06F17/16

Abstract: Embodiments of the invention provide a step detection. An accelerometer measurement in the form of a multi-dimensional acceleration vector is obtained. The magnitude of the accelerometer measurement is filtered using a low pass filter. A threshold for a down-crossing is provided as is a threshold for an up-crossing. A step detection is triggered if the magnitude of the accelerometer measurement is greater than or equal to the threshold for an up-crossing.

Abstract translation: 本发明的实施例提供了步骤检测。 获得多维加速度矢量形式的加速度计测量。 使用低通滤波器对加速度计测量的幅度进行滤波。 提供了一个下划线的阈值，就像上一交叉口的阈值一样。 如果加速度计测量的幅度大于或等于上行阈值，则触发步进检测。

公开(公告)号：US20160290807A1

公开(公告)日：2016-10-06

申请号：US15151067

申请日：2016-05-10

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Jayawardan Janardhanan ,  Goutam Dutta ,  Varun Tripuraneni

IPC: G01C21/16

CPC classification number: G01C21/16 ,  G01C21/165 ,  G01C21/20 ,  G01C22/006

Abstract: A user-heading determining system (10) for pedestrian use includes a multiple-axis accelerometer (110) having acceleration sensors; a device-heading sensor circuit (115) physically situated in a fixed relationship to the accelerometer (110); an electronic circuit (100) operable to generate signals representing components of acceleration sensed by the accelerometer (110) sensors, and to electronically process at least some part of the signals to produce an estimation of attitude of a user motion with respect to the accelerometer, and further to combine the attitude estimation (750, α) with a device heading estimation (770, Ψ) responsive to the device-heading sensor circuit, to produce a user heading estimation (780); and an electronic display (190) responsive to the electronic circuit (100) to display information at least in part based on the user heading estimation. Other systems, circuits and processes are also disclosed.

Abstract translation: 用于行人使用的用户航向确定系统（10）包括具有加速度传感器的多轴加速度计（110） 物理地位于与所述加速度计（110）固定关系的设备航向传感器电路（115）; 电子电路（100），其可操作以产生表示由所述加速度计（110）传感器感测到的加速度的分量的信号，并且电子处理所述信号的至少一部分以产生相对于所述加速度计的用户运动姿态的估计， 并且进一步将所述姿态估计（750，α）与响应于所述设备航向传感器电路的设备航向估计（770，Ψ）组合，以产生用户航向估计（780）; 以及响应于所述电子电路（100）至少部分地基于所述用户标题估计来显示信息的电子显示器（190）。 还公开了其它系统，电路和过程。

公开(公告)号：US09383209B2

公开(公告)日：2016-07-05

申请号：US14034486

申请日：2013-09-23

Applicant: Texas Instruments Incorporated

Inventor： Sachin Bhardwaj ,  Sriram Murali ,  Jaiganesh Balakrishnan ,  Jayawardan Janardhanan ,  Yogesh Shekar ,  Goutam Dutta

IPC: G01C21/16 ,  G01C21/20

CPC classification number: G01C21/165 ,  G01C21/16 ,  G01C21/20

Abstract: According to an aspect of the present disclosure, the relative attitude between an inertial measurement unit (IMU), present on a mobile device, and the frame of reference of the vehicle carrying mobile device is estimated. The estimated relative attitude is used to translate the IMU measurement to the vehicle frame of reference to determine the velocity and position of the vehicle. As a result, the vehicle position and velocity are determined accurately in the event of undocking and re-docking of the mobile device from a docking system in the vehicle. The relative attitude is estimated in terms of pitch, roll, and yaw angles.

Abstract translation: 根据本公开的一个方面，估计出现在移动设备上的惯性测量单元（IMU）与携带移动设备的车辆的参考系之间的相对姿态。 估计的相对姿态用于将IMU测量值转换为车辆参考系，以确定车辆的速度和位置。 结果，在移动设备从车辆中的对接系统脱离和重新对接的情况下，准确地确定车辆位置和速度。 根据俯仰角，俯仰角和偏航角估计相对姿态。

公开(公告)号：US09360560B2

公开(公告)日：2016-06-07

申请号：US14686310

申请日：2015-04-14

Applicant: Texas Instruments Incorporated

Inventor： Goutam Dutta ,  Tarkesh Pande ,  Sandeep Rao ,  Deric W. Waters

IPC: G01S19/47 ,  G01C21/16 ,  G01S19/20 ,  G01S19/49 ,  G01S19/52

CPC classification number: G01S19/47 ,  G01C21/165 ,  G01S19/20 ,  G01S19/49 ,  G01S19/52

Abstract: Embodiments of the disclosure provide a cross coupled position engine architecture for sensor integration in a Global Navigation Satellite System. In one embodiment, a data processing engine for processing inertial sensor data within a positioning system receiver is disclosed. The data processing engine includes a first input for receiving the sensor data, and a second input for receiving a positioning data. The data processing system also includes a memory and a processor. The processor of the data processing system is coupled to the memory and to the first and second input. The processor of the data processing system is configured to calculate a net acceleration profile data from the inertial sensor data and from the positioning data. The net acceleration profile data calculated by the processor of the data processing system is used for the Global Positioning System (GPS) receiver to subsequently calculate a position and a velocity data.

Abstract translation: 本公开的实施例提供了用于全球导航卫星系统中的传感器集成的交叉耦合位置引擎结构。 在一个实施例中，公开了一种用于在定位系统接收器内处理惯性传感器数据的数据处理引擎。 数据处理引擎包括用于接收传感器数据的第一输入端和用于接收定位数据的第二输入端。 数据处理系统还包括存储器和处理器。 数据处理系统的处理器耦合到存储器和第一和第二输入端。 数据处理系统的处理器被配置为从惯性传感器数据和定位数据计算净加速度曲线数据。 由数据处理系统的处理器计算的净加速度曲线数据用于全球定位系统（GPS）接收机，以随后计算位置和速度数据。

公开(公告)号：US20150247739A1

公开(公告)日：2015-09-03

申请号：US14712450

申请日：2015-05-14

Applicant: Texas Instruments Incorporated

Inventor： Goutam Dutta

IPC: G01C25/00 ,  G01C17/02

CPC classification number: G01C25/005 ,  G01C17/02 ,  G01C17/28 ,  Y10T29/49826

Abstract: An electronic circuit includes an electronic compass having e-compass sensors mounted on different axes and operable to supply e-compass sensor data, memory circuitry, and an electronic processor coupled to said e-compass sensors and to said memory circuitry, said electronic processor operable to execute an electronic ellipse-fitting procedure responsive to the e-compass sensor data to generate at least one signal related to an ellipse tilt angle (ξ), and store the at least one signal in said memory circuitry as a tilt calibration parameter for the e-compass. Processes for calibrating an e-compass, as well as electronic circuits and processes for correcting measured heading, and processes of manufacture are also disclosed.

Abstract translation: 电子电路包括电子罗盘，其具有安装在不同轴上的电子罗盘传感器，并且可操作以提供电子罗盘传感器数据，存储器电路和耦合到所述电子罗盘传感器和所述存储器电路的电子处理器，所述电子处理器可操作 响应于所述电子罗盘传感器数据执行电子椭圆拟合过程以产生与椭圆倾斜角（＆amp; xgr）相关的至少一个信号，并且将所述至少一个信号存储在所述存储器电路中作为倾斜校准参数 电子指南针。 还公开了用于校准电子罗盘的过程，以及用于校正测量的航向的电子电路和过程以及制造过程。

公开(公告)号：US20140236479A1

公开(公告)日：2014-08-21

申请号：US14180488

申请日：2014-02-14

Applicant: Texas Instruments Incorporated

Inventor： Jayawardan Janardhanan ,  Goutam Dutta ,  Varun Tripuraneni

IPC: G01C21/16

CPC classification number: G01C21/16 ,  G01C21/165 ,  G01C21/20 ,  G01C22/006

Abstract: A user-heading determining system (10) for pedestrian use includes a multiple-axis accelerometer (110) having acceleration sensors; a device-heading sensor circuit (115) physically situated in a fixed relationship to the accelerometer (110); an electronic circuit (100) operable to generate signals representing components of acceleration sensed by the accelerometer (110) sensors, and to electronically process at least some part of the signals to produce an estimation of attitude of a user motion with respect to the accelerometer, and further to combine the attitude estimation (750, α) with a device heading estimation (770, ψ) responsive to the device-heading sensor circuit, to produce a user heading estimation (780); and an electronic display (190) responsive to the electronic circuit (100) to display information at least in part based on the user heading estimation. Other systems, circuits and processes are also disclosed.

Abstract translation: 用于行人使用的用户航向确定系统（10）包括具有加速度传感器的多轴加速度计（110） 物理地位于与所述加速度计（110）固定关系的设备航向传感器电路（115）; 电子电路（100），其可操作以产生表示由所述加速度计（110）传感器感测到的加速度的分量的信号，并且电子处理所述信号的至少一部分以产生相对于所述加速度计的用户运动姿态的估计， 并且进一步将所述姿态估计（750，α）与响应于所述设备航向传感器电路的设备航向估计（770，ψ）组​​合以产生用户航向估计（780）; 以及响应于所述电子电路（100）至少部分地基于所述用户标题估计来显示信息的电子显示器（190）。 还公开了其它系统，电路和过程。