Automatic crash detection
First Claim
1. A mobile computing device comprising:
- an accelerometer configured to measure acceleration of at least one axis of the accelerometer;
communication circuitry configured to wirelessly communicate with other devices;
a processor; and
memory storing computer-executable instructions that, when executed by the processor, cause the processor of the mobile computing device to;
determine whether a trigger event has occurred;
after determining that the trigger event has occurred, initiate a time window for measuring acceleration using the accelerometer, wherein the time window comprises a time duration;
during the time duration, receive, from the accelerometer, a plurality of acceleration measurements measured by the accelerometer;
after the time duration, determine, based on the plurality of acceleration measurements measured by the accelerometer and received during the time duration, a number of acceleration events occurring during the time window;
when the number of acceleration events occurring during the time window does not exceed a threshold number of acceleration events, determine that a vehicle associated with the mobile computing device was not involved in a crash and determine that the mobile computing device was dropped or the vehicle was involved in a braking event; and
transmit, via the communication circuitry and to a server, data corresponding to the number of acceleration events occurring during the time window and indicating that the vehicle was not involved in a crash.
3 Assignments
0 Petitions
Accused Products
Abstract
Systems and methods are disclosed for determining whether or not a crash involving a vehicle has occurred. The acceleration of the vehicle may be measured using, for example, an accelerometer of a mobile device, which may be located inside the vehicle. The system may determine the magnitude of each accelerometer measurement and whether the magnitude exceeds one or more acceleration magnitude thresholds. The system may also determine the number of accelerometer events within a time window and whether the number exceeds one or more count thresholds. The system may determine whether a crash involving the vehicle has occurred based on the magnitudes of acceleration, number of acceleration events, and various thresholds. In some examples, the system may confirm that a crash has occurred based on, for example, the location of the mobile device.
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Citations
20 Claims
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1. A mobile computing device comprising:
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an accelerometer configured to measure acceleration of at least one axis of the accelerometer; communication circuitry configured to wirelessly communicate with other devices; a processor; and memory storing computer-executable instructions that, when executed by the processor, cause the processor of the mobile computing device to; determine whether a trigger event has occurred; after determining that the trigger event has occurred, initiate a time window for measuring acceleration using the accelerometer, wherein the time window comprises a time duration; during the time duration, receive, from the accelerometer, a plurality of acceleration measurements measured by the accelerometer; after the time duration, determine, based on the plurality of acceleration measurements measured by the accelerometer and received during the time duration, a number of acceleration events occurring during the time window; when the number of acceleration events occurring during the time window does not exceed a threshold number of acceleration events, determine that a vehicle associated with the mobile computing device was not involved in a crash and determine that the mobile computing device was dropped or the vehicle was involved in a braking event; and transmit, via the communication circuitry and to a server, data corresponding to the number of acceleration events occurring during the time window and indicating that the vehicle was not involved in a crash. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method comprising:
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determining, by a processor of a mobile computing device, whether a trigger event has occurred; after determining that the trigger event has occurred, initiating, by the processor of the mobile computing device, a time window for measuring acceleration using an accelerometer, wherein the time window comprises a time duration; during the time duration, receiving, by the processor of the mobile computing device and from the accelerometer, a plurality of acceleration measurements measured by the accelerometer; after the time duration, determining, by the processor of the mobile computing device and based on the plurality of acceleration measurements measured by the accelerometer and received during the time duration, a number of acceleration events occurring during the time window; when the number of acceleration events occurring during the time window does not exceed a threshold number of acceleration events, determining, by the processor of the mobile computing device, that a vehicle associated with the mobile computing device was not involved in a crash and determining that the mobile computing device was dropped or the vehicle was involved in a braking event; and transmitting, by the mobile computing device, via communication circuitry associated with the mobile computing device, and to a server, data corresponding to the number of acceleration events occurring during the time window and indicating that the vehicle was not involved in a crash. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A non-transitory computer readable medium storing instructions that, when read by a processor of a mobile computing device, cause the processor of the mobile computing device to:
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determine whether a trigger event has occurred; after determining that the trigger event has occurred, initiate a time window for measuring acceleration using an accelerometer, wherein the time window comprises a time duration; during the time duration, receive, from the accelerometer, a plurality of acceleration measurements measured by the accelerometer; after the time duration, determine, based on the plurality of acceleration measurements measured by the accelerometer and received during the time duration, a number of acceleration events occurring during the time window; when the number of acceleration events occurring during the time window does not exceed a threshold number of acceleration events, determine that a vehicle associated with the mobile computing device was not involved in a crash and determine that the mobile computing device was dropped or the vehicle was involved in a braking event; and transmit, via communication circuitry associated with the mobile computing device and to a server, data corresponding to the number of acceleration events occurring during the time window and indicating that the vehicle was not involved in a crash. - View Dependent Claims (20)
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Specification