Systems and methods for efficient characterization of acceleration events
First Claim
1. An acceleration characterization telematics system, comprising:
- an acceleration sensor;
a storage device, where the storage device stores an acceleration event characterization application; and
a processor;
wherein the acceleration event characterization application directs the processor to;
receive acceleration information by using the acceleration sensor wherein the received acceleration information comprises a signal comprising a first leading edge, a first trailing edge, and a first amplitude;
sample the acceleration sensor for acceleration information over a first time period by using a first moving average window having a window center point to generate short interval accelerometer filter information, wherein the short interval accelerometer filter information comprises a signal comprising a second leading edge, a second trailing edge, and a second amplitude;
sample the acceleration sensor for acceleration information over a second time period by using a second moving average window having the same window center point as the first moving average window to generate long interval accelerometer filter information, the second time period being longer than the first time period and that contains the first time period wherein the long interval accelerometer information comprises a signal comprising a third leading edge, a third trailing edge, and a third amplitude; and
characterize an acceleration event in the received acceleration information by calculating the intersection of the leading and trailing edges of the short interval accelerometer filter information and the leading and trailing edges of the long interval accelerometer filter information to identify the beginning and ending of the acceleration event in the received acceleration information.
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Abstract
Systems and methods for the efficient characterization of acceleration events in accordance embodiments of the invention are disclosed. In one embodiment of the invention, an acceleration characterization telematics system includes an acceleration sensor, a storage device, where the storage device is configured to store an acceleration event characterization application, and a processor, wherein the acceleration event characterization application configures the processor to receive acceleration information using the acceleration sensor, determine short interval filter information using the received acceleration information, determine long interval filter information using the received acceleration information, and characterize an acceleration event in the received acceleration information using the received acceleration information, the short interval filter information, and the long interval filter information.
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Citations
18 Claims
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1. An acceleration characterization telematics system, comprising:
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an acceleration sensor; a storage device, where the storage device stores an acceleration event characterization application; and a processor; wherein the acceleration event characterization application directs the processor to; receive acceleration information by using the acceleration sensor wherein the received acceleration information comprises a signal comprising a first leading edge, a first trailing edge, and a first amplitude; sample the acceleration sensor for acceleration information over a first time period by using a first moving average window having a window center point to generate short interval accelerometer filter information, wherein the short interval accelerometer filter information comprises a signal comprising a second leading edge, a second trailing edge, and a second amplitude; sample the acceleration sensor for acceleration information over a second time period by using a second moving average window having the same window center point as the first moving average window to generate long interval accelerometer filter information, the second time period being longer than the first time period and that contains the first time period wherein the long interval accelerometer information comprises a signal comprising a third leading edge, a third trailing edge, and a third amplitude; and characterize an acceleration event in the received acceleration information by calculating the intersection of the leading and trailing edges of the short interval accelerometer filter information and the leading and trailing edges of the long interval accelerometer filter information to identify the beginning and ending of the acceleration event in the received acceleration information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for characterizing acceleration events, the method comprising:
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receiving acceleration information wherein the received acceleration information comprises a signal comprising a first leading edge, a first trailing edge, and a first amplitude by using an acceleration characterization telematics system, the acceleration characterization telematics system comprising a processor, a memory connected to the processor, and an accelerometer; sampling the acceleration sensor for acceleration information over a first time period by using a first moving average window having a window center point to generate short interval accelerometer filter information that includes a signal comprising a second leading edge, a second trailing edge, and a second amplitude based on the received acceleration information; sampling the acceleration sensor for acceleration information by using a second moving average window having the same window center point as the first moving average window over a second time period to generate long interval accelerometer filter information that includes a signal comprising a third leading edge, a third trailing edge, and a third amplitude based on the received acceleration information, wherein the second time period is longer than the first time period and contains the first time period; and characterizing an acceleration event in the received acceleration information by calculating the intersection of the leading and trailing edges of the short interval accelerometer filter information and the leading and trailing edges of the long interval accelerometer filter information to identify the beginning and ending of the acceleration event in the received acceleration information. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification