公开(公告)号：US09639999B2

公开(公告)日：2017-05-02

申请号：US14658702

申请日：2015-03-16

Applicant: Tata Consultancy Services Limited

Inventor： Arijit Chowdhury ,  Tapas Chakravarty ,  Balamuralidhar Purushothaman

IPC: G01C21/16 ,  G07C5/08 ,  G01P3/00 ,  B60W40/107 ,  B60W40/105 ,  G01P3/50 ,  G01P7/00

CPC classification number: G07C5/0841 ,  B60W40/105 ,  B60W40/107 ,  G01C21/16 ,  G01C21/165 ,  G01P3/00 ,  G01P3/50 ,  G01P7/00

Abstract: System and method for estimating speed of a vehicle is disclosed. Speed of a vehicle is recorded using a first sensor at a time interval of a plurality of time intervals. Further, an acceleration of the vehicle may be recorded using a second sensor at each sub-interval of the time interval. At each sub-interval, a forward speed and a backward speed, of the vehicle are obtained based upon the acceleration at each sub-interval. After obtaining the forward speed and the backward speed, a predefined weight may be assigned to the forward speed and the backward speed at each sub-interval. Subsequently, a corrected speed of the vehicle at each sub-interval is calculated based upon the predefined weight, the forward speed and the backward speed. Further, a slope associated with the speed of the vehicle is determined Based upon the slope, the speed of the vehicle at a sub-interval may be estimated.

公开(公告)号：US20150258993A1

公开(公告)日：2015-09-17

申请号：US14619462

申请日：2015-02-11

Applicant: Tata Consultancy Services Limited

Inventor： Tapas Chakravarty ,  Arijit Chowdhury ,  Balamuralidhar Purushothaman

IPC: B60W30/14

CPC classification number: B60W30/143 ,  B60W30/20 ,  B60W2520/105 ,  B60W2550/147 ,  B60W2550/402 ,  B60W2720/10

Abstract: A method and system for controlling a speed of a vehicle. Acceleration data comprising acceleration samples of the vehicle on a segment of the road is captured. Jerk energy values associated with the vehicle on the segment is computed based upon the acceleration samples. Median jerk energy of the vehicle on the segment may be determined based upon the jerk energy values. Predictive median jerk energy of the vehicle on the segment is computed using a statistical equation. A score associated with the segment is calculated based upon the median jerk energy, the predictive median jerk energy, and a standard deviation (σ). The segment is classified into one of a first set of categories and a second set of categories based upon the score. A feedback signal indicative of controlling the speed of the vehicle is transmitted to a controller based upon the classification.

Abstract translation: 一种用于控制车辆速度的方法和系统。 捕获包括在道路的段上的车辆的加速度样本的加速度数据。 基于加速度采样计算与车辆在段上相关联的冲击能量值。 可以基于加加斯能量值来确定车辆在该段上的中位冲击能量。 使用统计方程计算车辆在段上的预测中值加加斯能量。 根据中值加加斯能量，预测中值加加斯能量和标准偏差（＆sgr）计算与分段相关的分数。 该分段根据分数被分类为第一组类别和第二组类别之一。 基于分类，将指示控制车辆速度的反馈信号发送到控制器。

公开(公告)号：US20150019067A1

公开(公告)日：2015-01-15

申请号：US14327211

申请日：2014-07-09

Applicant: Tata Consultancy Services Limited

Inventor： Tapas Chakravarty ,  Avik Ghose ,  Arijit Chowdhury ,  Chirabrata Bhaumik ,  Balamuralidhar Purushothaman

IPC: G06Q40/08 ,  G07C5/00 ,  G07C5/08

CPC classification number: G06Q40/08 ,  B60W40/09 ,  G05B23/0232 ,  G07C5/008 ,  G07C5/085

Abstract: Disclosed are a device, system and methods for detecting an anomaly associated with driving of a vehicle. Z-axis acceleration data is determined at the device. Based on the Z-axis acceleration data, jerk energies are computed and transmitted to the system for analysis. Further, the jerk energies are received for a plurality of trips at the system. Further, at the system, statistical analysis is performed on the jerk energies for determining a hazard rate for each trip of the plurality of trips. Then based on the hazard rate determined for each of the plurality of trips, a trend analysis is performed. Based on the trend analysis, any anomaly associated with the driving of the vehicle is detected. Further, the anomaly detected may be notified to a person associated with the device or with a monitoring terminal.

Abstract translation: 公开了一种用于检测与车辆驾驶有关的异常的装置，系统和方法。 在设备上确定Z轴加速度数据。 基于Z轴加速度数据，计算冲击能量并将其传输到系统进行分析。 此外，在系统处接收多次跳闸的冲击能量。 此外，在该系统中，对用于确定多次旅行中的每个行程的危险率的冲击能量进行统计分析。 然后，基于为多个行程中的每一个确定的危险率，进行趋势分析。 根据趋势分析，检测到与车辆行驶有关的任何异常情况。 此外，检测到的异常可以被通知给与设备相关联的人或与监视终端。