SYSTEMS AND METODS FOR MEASURING VEHICLE SPEED
First Claim
1. A system comprising:
- a processing module that generates time stamps when pulses are received from a sensor that senses a rotation of a device;
a sampling module that samples the time stamps during N predetermined intervals and that stores N of the time stamps that correspond to the N predetermined intervals, where N is an integer that is greater than 2;
a period determination module that determines a plurality of periods, wherein each one of the plurality of periods is based on a difference between two of the N time stamps; and
a speed determination module that determines a rotational speed of the device based on a difference between two of the plurality of periods.
8 Assignments
0 Petitions
Accused Products
Abstract
A system includes a processing module, a sampling module, a period determination module, and a speed determination module. The processing module generates time stamps when pulses are received from a sensor that senses a rotation of a device. The sampling module samples the time stamps during N predetermined intervals and stores N of the time stamps that correspond to the N predetermined intervals, where N is an integer that is greater than 2. The period determination module determines a plurality of periods, wherein each one of the plurality of periods is based on a difference between two of the N time stamps. The speed determination module determines a rotational speed of the device based on a difference between two of the plurality of periods.
9 Citations
20 Claims
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1. A system comprising:
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a processing module that generates time stamps when pulses are received from a sensor that senses a rotation of a device; a sampling module that samples the time stamps during N predetermined intervals and that stores N of the time stamps that correspond to the N predetermined intervals, where N is an integer that is greater than 2; a period determination module that determines a plurality of periods, wherein each one of the plurality of periods is based on a difference between two of the N time stamps; and a speed determination module that determines a rotational speed of the device based on a difference between two of the plurality of periods. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method comprising:
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generating time stamps when pulses are received from a sensor that senses a rotation of a device; sampling the time stamps during N predetermined intervals; storing N of the time stamps that correspond to the N predetermined intervals, where N is an integer that is greater than 2; determining a plurality of periods, wherein each one of the plurality of periods is based on a difference between two of the N time stamps; and determining a rotational speed of the device based on a difference between two of the plurality of periods. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A system comprising:
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a processing module that generates time stamps when pulses are received from a sensor that senses a rotation of a device; a period determination module that determines a plurality of periods, wherein each one of the plurality of periods is based on a difference between two of the time stamps; and a speed determination module that determines a rotational speed of the device based on a difference between two of the plurality of periods. - View Dependent Claims (18, 19, 20)
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Specification