公开(公告)号：US20160110931A1

公开(公告)日：2016-04-21

申请号：US14662338

申请日：2015-03-19

Applicant: Tata Consultancy Services Limited

Inventor： Arijit CHOWDHURY ,  Tapas CHAKRAVARTY ,  Balamuralidhar PURUSHOTHAMAN

IPC: G07C5/08 ,  G01S19/13

CPC classification number: G07C5/08 ,  B60R2021/0027 ,  B60R2021/01325 ,  G01M17/00 ,  G01S19/13 ,  G07C5/008 ,  G07C5/085 ,  G08G1/0112 ,  G08G1/0133 ,  H04N9/47

Abstract: A method and system for crash analysis of one or more vehicles involved in a crash is disclosed. The method may comprise capturing data samples such as a plurality of GPS samples and a plurality of acceleration samples. The method may further comprise generating a trajectory. Moreover, the method may comprise segmenting the trajectory into a macro level segment and further into a micro level segment. The method may further comprise computing at least one macro level score based on the plurality of acceleration samples and the GPS samples. Based on the at least one macro level score, the method may be configured to compute a crash responsibility score for ascertaining crash responsibility.

Abstract translation: 公开了一种涉及碰撞的一个或多个车辆的碰撞分析方法和系统。 该方法可以包括捕获诸如多个GPS样本和多个加速度样本之类的数据样本。 该方法还可以包括生成轨迹。 此外，该方法可以包括将轨迹分割成宏级别段并进一步分成微水平段。 该方法还可以包括基于多个加速度样本和GPS样本来计算至少一个宏级别得分。 基于至少一个宏观水平分数，该方法可以被配置为计算用于确定碰撞责任的碰撞责任分数。

公开(公告)号：US20160011228A1

公开(公告)日：2016-01-14

申请号：US14751749

申请日：2015-06-26

Applicant: Tata Consultancy Services Limited

Inventor： Tapas CHAKRAVARTY ,  Arijit CHOWDHURY ,  Balamuralidhar PURUSHOTHAMAN

IPC: G01P3/42 ,  G01P21/00 ,  G01S19/13

CPC classification number: G01P3/42 ,  G01P21/00 ,  G01S19/13 ,  G01S19/40 ,  G01S19/52

Abstract: A method and system for determining a speed of a vehicle based on a GPS speed captured from a Global Positioning System (GPS). A capturing module captures GPS speed Vx and a horizontal accuracy value corresponding to a time stamp Tx. A speed modification module modifies the GPS speed Vx corresponding to the time stamp Tx. A speed correcting module corrects the GPS speed Vx corresponding to the time stamp Tx. The GPS speed may be corrected by filtering an error in the GPS speed by using a Slope dependent averaging (SDA) filter in order to obtain a first corrected speed Vx′. Further, the first corrected speed is corrected by selecting one of a centre weight (CW) filter and an edge weight (EW) filter, based upon a pre-defined condition, in order to obtain a second corrected speed Vx″ indicating the speed of the vehicle.

Abstract translation: 一种用于基于从全球定位系统（GPS）捕获的GPS速度来确定车辆速度的方法和系统。 捕获模块捕获对应于时间戳Tx的GPS速度Vx和水平精度值。 速度修改模块修改对应于时间戳Tx的GPS速度Vx。 速度校正模块校正对应于时间戳Tx的GPS速度Vx。 可以通过使用斜率依赖平均（SDA）滤波器来过滤GPS速度中的误差来校正GPS速度，以获得第一校正速度Vx'。 此外，基于预定义条件，通过选择中心权重（CW）滤波器和边缘权重（EW）滤波器之一来校正第一校正速度，以便获得指示速度的第二校正速度Vx“ 机动车。