SYSTEM AND METHOD FOR USE WITH AN ACCELEROMETER TO DETERMINE A FRAME OF REFERENCE
First Claim
1. A system for use with an accelerometer to determine a frame of reference, for subsequent use in assessing or monitoring a status of a vehicle or other equipment, or operator thereof, comprising:
- a data collection and assessment system comprising one or more data collection devices, including one or more accelerometers, that collects information from the one or more accelerometers as the vehicle or other equipment is moving; and
a frame determination module which samples or otherwise receives accelerometer data over a period of time, and also information from one or more other on-board devices, and uses this information to determine a rotation matrix that reflects the skew between the system'"'"'s orientation and understanding of direction, and the vehicle'"'"'s true orientation or direction in three-dimensions, and to determine a frame of reference for use in subsequently characterizing motions of the vehicle or other equipment in three dimensions.
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Accused Products
Abstract
A system and method for use with a device that includes an accelerometer, which can be used to determine a frame of reference for the device relative to a moving vehicle or other equipment, and which can be subsequently used in assessing or monitoring the status of the vehicle or an operator thereof. In accordance with an embodiment, by sampling accelerometer data over a period of time, the system can determine a rotation matrix or skew between the device/accelerometer'"'"'s orientation and understanding of direction, and the vehicle'"'"'s true orientation or direction in three-dimensions. The information can be used to provide corrections to the accelerometer data, and to more accurately determine the vehicle'"'"'s true orientation/direction and motion within a three-dimensional frame of reference.
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Citations
11 Claims
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1. A system for use with an accelerometer to determine a frame of reference, for subsequent use in assessing or monitoring a status of a vehicle or other equipment, or operator thereof, comprising:
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a data collection and assessment system comprising one or more data collection devices, including one or more accelerometers, that collects information from the one or more accelerometers as the vehicle or other equipment is moving; and a frame determination module which samples or otherwise receives accelerometer data over a period of time, and also information from one or more other on-board devices, and uses this information to determine a rotation matrix that reflects the skew between the system'"'"'s orientation and understanding of direction, and the vehicle'"'"'s true orientation or direction in three-dimensions, and to determine a frame of reference for use in subsequently characterizing motions of the vehicle or other equipment in three dimensions. - View Dependent Claims (2, 3, 4, 5)
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6. A method for use with an accelerometer to determine a frame of reference, for subsequent use in assessing or monitoring a status of a vehicle or other equipment, or operator thereof, comprising:
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using one or more accelerometers to collect information as the vehicle or other equipment is moving; and sampling or otherwise receiving the accelerometer data over a period of time, and information from one or more other on-board devices, and using this information to determine a rotation matrix that reflects the skew between the system'"'"'s orientation and understanding of direction, and the vehicle'"'"'s true orientation or direction in three-dimensions, and to determine a frame of reference for use in subsequently characterizing motions of the vehicle or other equipment in three dimensions. - View Dependent Claims (7, 8, 9, 10)
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11. A non-transitory computer readable medium, including instructions stored thereon which when read and executed by one or more computers cause the one or more computers to perform the steps comprising:
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using one or more accelerometers to collect information as the vehicle or other equipment is moving; and sampling or otherwise receiving the accelerometer data over a period of time, and information from one or more other on-board devices, and using this information to determine a rotation matrix that reflects the skew between the system'"'"'s orientation and understanding of direction, and the vehicle'"'"'s true orientation or direction in three-dimensions, and to determine a frame of reference for use in subsequently characterizing motions of the vehicle or other equipment in three dimensions.
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Specification