Systems and methods for crash determination with noise filtering
First Claim
1. A vehicle telematics system, comprising:
- a telematics device comprising at least one sensor having an accelerometer, a processor and a memory storing a crash determination application; and
a remote server system comprising a processor and a memory coupled to the processor and storing a crash analysis application and a class of the vehicle;
wherein the processor of the telematics device, on reading the memory, is directed to;
obtain sensor data from the at least one sensor;
calculate peak resultant data based on the sensor data, wherein the peak resultant data describes the acceleration of the vehicle over a first time period;
dynamically determine a set of crash curve data based on the class of the vehicle;
generate crash score data based on the peak resultant data and the set of crash curve data for the vehicle, wherein the crash score data describes the likelihood that the vehicle was involved in a crash based on the class of the vehicle and the sensor data; and
provide the obtained sensor data when the crash score data exceeds a crash threshold to the remote server system; and
wherein the processor of the remote server system, on reading the crash analysis application, is directed to;
in response to the crash source data exceeding the crash threshold, receive the obtained sensor data from the vehicle telematics device;
obtain vehicle identification data from the vehicle telematics device;
calculate resultant velocity change based on the obtained sensor data and the vehicle identification data;
calculate absolute speed change data based on the obtained sensor data; and
generate crash occurred data when the resultant velocity change exceeds a first threshold value and when the absolute speed change is below a second threshold value; and
generate a false positive non-crash event when an oscillating event is detected that decreases in magnitude over time and storing the obtained sensor data from the vehicle telematics device.
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Accused Products
Abstract
Embodiments of the invention include a vehicle telematics system including a telematics device and a remote server system, wherein the telematics device obtains sensor data from at least one sensor installed in a vehicle, calculates peak resultant data based on the sensor data, generates crash score data based on the peak resultant data and a set of crash curve data for the vehicle, and provides the obtained sensor data when the crash score data exceeds a crash threshold to the remote server system and the remote server system obtains vehicle sensor data and vehicle identification data from the vehicle telematics device, calculates resultant change data and absolute speed change data based on the obtained sensor data and/or the vehicle identification data, and generates crash occurred data when the resultant change data exceeds a first threshold value and when the absolute speed change data is below a second threshold value.
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Citations
20 Claims
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1. A vehicle telematics system, comprising:
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a telematics device comprising at least one sensor having an accelerometer, a processor and a memory storing a crash determination application; and a remote server system comprising a processor and a memory coupled to the processor and storing a crash analysis application and a class of the vehicle; wherein the processor of the telematics device, on reading the memory, is directed to; obtain sensor data from the at least one sensor; calculate peak resultant data based on the sensor data, wherein the peak resultant data describes the acceleration of the vehicle over a first time period; dynamically determine a set of crash curve data based on the class of the vehicle; generate crash score data based on the peak resultant data and the set of crash curve data for the vehicle, wherein the crash score data describes the likelihood that the vehicle was involved in a crash based on the class of the vehicle and the sensor data; and provide the obtained sensor data when the crash score data exceeds a crash threshold to the remote server system; and wherein the processor of the remote server system, on reading the crash analysis application, is directed to; in response to the crash source data exceeding the crash threshold, receive the obtained sensor data from the vehicle telematics device; obtain vehicle identification data from the vehicle telematics device; calculate resultant velocity change based on the obtained sensor data and the vehicle identification data; calculate absolute speed change data based on the obtained sensor data; and generate crash occurred data when the resultant velocity change exceeds a first threshold value and when the absolute speed change is below a second threshold value; and generate a false positive non-crash event when an oscillating event is detected that decreases in magnitude over time and storing the obtained sensor data from the vehicle telematics device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for determining if a vehicle has been involved in a crash, comprising:
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obtaining sensor data from at least one sensor installed in the vehicle by using a vehicle telematics device, wherein the at least one sensor includes an accelerometer, and wherein the vehicle telematics device comprises a processor and a memory storing a class of the vehicle; calculating peak resultant data based on the sensor data by using the vehicle telematics device, wherein the peak resultant data describes the acceleration of the vehicle over a first time period; dynamically determining a set of crash curve data based on the class of the vehicle; generating crash score data based on the peak resultant data and the set of crash curve data for the vehicle by using the vehicle telematics device, wherein the crash score data describes the likelihood that the vehicle was involved in a crash based on the class of the vehicle and the sensor data; providing the obtained sensor data when the crash score data exceeds a crash threshold to a remote server system using the vehicle telematics device, wherein the remote server system comprises a processor and a memory; obtaining vehicle sensor data from the vehicle telematics device by using the remote server system; obtaining vehicle identification data from the vehicle telematics device by using the remote server system; calculating resultant velocity change based on the obtained sensor data and the vehicle identification data by using the remote server system; calculating an absolute speed change based on the obtained sensor data by using the remote server system; and generating crash occurred data when the resultant velocity change exceeds a threshold value and when the absolute speed change is below a second threshold value by using the remote server system and; generating a false-positive non-crash event when an oscillating event is detected that decreases in magnitude over time and storing the obtained vehicle sensor data from the vehicle telematics device. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification