SYSTEM AND METHOD FOR ESTIMATING SPEED OF A VEHICLE
First Claim
1. A method for estimating speed of a vehicle, the method comprising:
- recording, by a processor, a speed of a vehicle using a first sensor at a time interval of a plurality of time intervals;
recording, by the processor, an acceleration of the vehicle using a second sensor, and wherein the acceleration is recorded at each sub-interval of the time interval;
obtaining, by the processor, a forward speed and a backward speed, of the vehicle at each sub-interval based upon the acceleration at each sub-interval;
assigning, by the processor, a pre-defined weight to the forward speed and the backward speed at each sub-interval;
calculating, by the processor, a corrected speed of the vehicle at each sub-interval based upon the predefined weight, the forward speed and the backward speed;
determining, by the processor, a slope associated with the speed of the vehicle, wherein the slope indicates change in the speed of the vehicle between the plurality of time intervals; and
estimating, by the processor, the speed of the vehicle at a sub-interval based upon the slope, wherein the speed is estimated using one ofthe corrected speed at the sub-interval,minimum of the forward speed and the backward speed in the time interval, andmaximum of the forward speed and the backward speed in the time interval.
1 Assignment
0 Petitions
Accused Products
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.
10 Citations
11 Claims
-
1. A method for estimating speed of a vehicle, the method comprising:
-
recording, by a processor, a speed of a vehicle using a first sensor at a time interval of a plurality of time intervals; recording, by the processor, an acceleration of the vehicle using a second sensor, and wherein the acceleration is recorded at each sub-interval of the time interval; obtaining, by the processor, a forward speed and a backward speed, of the vehicle at each sub-interval based upon the acceleration at each sub-interval; assigning, by the processor, a pre-defined weight to the forward speed and the backward speed at each sub-interval; calculating, by the processor, a corrected speed of the vehicle at each sub-interval based upon the predefined weight, the forward speed and the backward speed; determining, by the processor, a slope associated with the speed of the vehicle, wherein the slope indicates change in the speed of the vehicle between the plurality of time intervals; and estimating, by the processor, the speed of the vehicle at a sub-interval based upon the slope, wherein the speed is estimated using one of the corrected speed at the sub-interval, minimum of the forward speed and the backward speed in the time interval, and maximum of the forward speed and the backward speed in the time interval. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A system for estimating speed of a vehicle, the system comprising:
-
a processor; and a memory coupled to the processor, wherein the processor executes program instructions stored in the memory, to; record a speed of a vehicle using a first sensor at a time interval of a plurality of time intervals; record an acceleration of the vehicle using a second sensor, and wherein the acceleration is recorded at each sub-interval of the time interval; obtain a forward speed and a backward speed, of the vehicle at each sub-interval based upon the acceleration at each sub-interval; assign a predefined weight to the forward speed and the backward speed at each sub-interval; calculate a corrected speed of the vehicle at each sub-interval based upon the predefined weight, the forward speed and the backward speed; determine a slope associated with the speed of the vehicle, wherein the slope indicates change in the speed of the vehicle between the plurality of time intervals; and estimate the speed of the vehicle at a sub-interval based upon the slope, wherein the speed is estimated using one of the corrected speed at the sub-interval, minimum of the forward speed and the backward speed in the time interval, and maximum of the forward speed and the backward speed in the time interval. - View Dependent Claims (7, 8, 9, 10)
-
-
11. A non-transitory computer readable medium embodying a program executable in a computing device for estimating speed of a vehicle, the program comprising:
-
a program code for recording a speed of a vehicle using a first sensor at a time interval of a plurality of time intervals; a program code for recording an acceleration of the vehicle using a second sensor, and wherein the acceleration is recorded at each sub-interval of the time interval; a program code for obtaining a forward speed and a backward speed, of the vehicle at each sub-interval based upon the acceleration at each sub-interval; a program code for assigning a predefined weight to the forward speed and the backward speed at each sub-interval; a program code for calculating a corrected speed of the vehicle at each sub-interval based upon the predefined weight, the forward speed and the backward speed; a program code for determining a slope associated with the speed of the vehicle, wherein the slope indicates change in the speed of the vehicle between the plurality of time intervals; and a program code for estimating the speed of the vehicle at a sub-interval based upon the slope, wherein the speed is estimated using one of the corrected speed at the sub-interval, minimum of the forward speed and the backward speed in the time interval, and maximum of the forward speed and the backward speed in the time interval.
-
Specification