Mobile Asset Data Recorder and Transmitter
First Claim
1. A method for recording, processing and transmitting data from a mobile asset, comprising the steps of:
- a. at least one inertial navigation sensor board onboard the mobile asset, said board comprising a microcontroller communicating with and processing data from a 3-axis accelerometer;
b. reading raw acceleration data from the 3-axis accelerometer;
c. filtering the raw acceleration data into filtered acceleration values; and
d. translating the axes of the inertial navigation sensor board to the axes of the mobile asset using at least one of the raw acceleration data and the filtered acceleration values.
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Accused Products
Abstract
An acceleration-based mobile asset data recorder and transmitter equipped with a wireless processing unit, an event recorder, a digital video recorder, a fuel level sensor, and an inertial navigation sensor board. The inertial navigation sensor board includes a 3-axis gyroscope, a 3-axis accelerometer, a 3-axis magnetometer, and a microcontroller. The data recorder and transmitter allows for automatic orientation, automatic compass calibration, fuel compensation with pitch and roll, emergency brake application with impact detection, rough operating condition detection, engine running detection, and inertial navigation of a mobile asset. Users can use the normal operation of their mobile assets to locate and alert, in real-time, areas where their assets are encountering rough operating environments, to provide for quicker emergency response, and to validate the effectiveness of repairs and rerouting.
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Citations
58 Claims
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1. A method for recording, processing and transmitting data from a mobile asset, comprising the steps of:
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a. at least one inertial navigation sensor board onboard the mobile asset, said board comprising a microcontroller communicating with and processing data from a 3-axis accelerometer; b. reading raw acceleration data from the 3-axis accelerometer; c. filtering the raw acceleration data into filtered acceleration values; and d. translating the axes of the inertial navigation sensor board to the axes of the mobile asset using at least one of the raw acceleration data and the filtered acceleration values. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 46, 47, 48, 49, 55, 56)
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25. A system for recording, processing, and transmitting data from a mobile asset, comprising:
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a. a wireless processing unit; b. at least one inertial navigation sensor board onboard the mobile asset, said board comprising a microcontroller communicating with and processing data from a 3-axis accelerometer; c. firmware, running on the microcontroller, for reading raw acceleration data from the 3-axis accelerometer, calculating pitch and roll using the data from the 3-axis accelerometer, determining the occurrence of trigger events, sending trigger event messages to the wireless processing unit, and sending periodic data messages containing a predefined set of values to the wireless processing unit every second; and d. a software application running on the wireless processing unit for communicating with the inertial navigation sensor board, automatically calibrating a compass of the mobile asset, automatically orienting the axes of the wireless processing unit to the axes of the mobile asset, and gathering data from other software applications running on the wireless processing unit. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 50, 51, 52, 53, 57, 58)
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54. A method for recording, processing and transmitting data from a mobile asset, comprising the steps of:
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a. establishing predefined durations in three axes; b. establishing predefined thresholds in three axes; c. reading data from an accelerometer; d. reading data from a magnetometer; e. reading data from a gyroscope; and f. comparing all of said data to said predefined thresholds and to said predefined durations.
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Specification