Qualifying Automatic Vehicle Crash Emergency Calls to Public Safety Answering Points
First Claim
1. A method comprising:
- receiving accelerometer data indicating a change in a motor vehicle velocity;
processing the accelerometer data to determine a preliminary crash detection decision indicating that the motor vehicle may have experienced a crash based on an accelerometer crash pulse;
processing at least one of microphone data obtained from a microphone during a time associated with the motor vehicle crash to determine a sound amplitude measurement data and velocity data of the motor vehicle obtained during the time associated with the motor vehicle crash;
comparing the accelerometer crash pulse to at least one of the sound amplitude measurement data and the velocity data; and
determining the motor vehicle has been in a crash based on the comparing of the accelerometer crash pulse to at least one of the sound amplitude measurement data and the velocity data.
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Accused Products
Abstract
The present application provides methods for in-vehicle emergency telematics devices and systems to automatically qualify vehicle crash events before directly placing a 3-digit emergency call from an in-vehicle TCU to a local PSAP operator. The qualification is performed in two stages. The first stage produces a qualified crash detection decision wherein a preliminary crash detection based on impact sensors is qualified by crash related non-impact sensors and vehicle telemetry data. The second stage uses an injury severity prediction algorithm to score the detected crash and produces a decision as to whether the crash warrants an emergency call to the PSAP operator.
61 Citations
20 Claims
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1. A method comprising:
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receiving accelerometer data indicating a change in a motor vehicle velocity; processing the accelerometer data to determine a preliminary crash detection decision indicating that the motor vehicle may have experienced a crash based on an accelerometer crash pulse; processing at least one of microphone data obtained from a microphone during a time associated with the motor vehicle crash to determine a sound amplitude measurement data and velocity data of the motor vehicle obtained during the time associated with the motor vehicle crash; comparing the accelerometer crash pulse to at least one of the sound amplitude measurement data and the velocity data; and determining the motor vehicle has been in a crash based on the comparing of the accelerometer crash pulse to at least one of the sound amplitude measurement data and the velocity data. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus comprising:
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a receiver configured to receive accelerometer data indicating a change in a motor vehicle velocity; and a processor configured to process the accelerometer data to determine a preliminary crash detection decision indicating that the motor vehicle may have experienced a crash based on an accelerometer crash pulse, process at least one of microphone data obtained from a microphone during a time associated with the motor vehicle crash to determine a sound amplitude measurement data and velocity data of the motor vehicle obtained during the time associated with the motor vehicle crash, compare the accelerometer crash pulse to at least one of the sound amplitude measurement data and the velocity data, and determine the motor vehicle has been in a crash based on the comparing of the accelerometer crash pulse to at least one of the sound amplitude measurement data and the velocity data. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A non-transitory computer readable storage medium configured to store instructions that when executed causes a processor to perform:
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receiving accelerometer data indicating a change in a motor vehicle position; processing the accelerometer data to determine a preliminary crash detection decision indicating that the motor vehicle may have experienced a crash based on an accelerometer crash pulse; processing at least one of microphone data obtained from a microphone during a time associated with the motor vehicle crash to determine a sound amplitude measurement data and velocity data of the motor vehicle obtained during the time associated with the motor vehicle crash; comparing the accelerometer crash pulse to at least one of the sound amplitude measurement data and the velocity data; and determining the motor vehicle has been in a crash based on the comparing of the accelerometer crash pulse to at least one of the sound amplitude measurement data and the velocity data. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification