Mobile asset data recorder and transmitter

A method for recording, processing and transmitting data from a mobile asset, comprising the steps of:

• a. at least one event data recorder, onboard the mobile asset, monitoring real-time status of at least one input sensor and logging data relating to the mobile asset;
• b. at least one digital video recorder onboard the mobile asset, recording still images, video and acoustics in real-time;
• c. 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;
• d. establishing an x-axis acceleration duration, a y-axis acceleration duration, and a z-axis acceleration duration;
• e. establishing an x-axis acceleration threshold, a y-axis acceleration threshold, and a z-axis threshold predefined thresholds in three axes;
• f. reading an x-axis raw acceleration value, a y-axis raw acceleration value, and a z-axis raw acceleration value data from the 3-axis accelerometer;
• g. reading an x-axis gauss value, a y-axis gauss value, and a z-axis gauss value from a 3-axis magnetometer;
• h. reading an x-axis angular acceleration value, a y-axis angular acceleration value, and a z-axis angular acceleration value from a 3-axis gyroscope;
• i. filtering the x-axis raw acceleration value, y-axis raw acceleration value and the z-axis raw acceleration value into an x-axis filtered acceleration value, a y-axis filtered acceleration value, and a z-axis filtered acceleration value;
• j. translating the axes of the inertial navigation sensor board to the axes of the mobile asset and determining an x-axis translated raw acceleration value by translating the x-axis raw acceleration value to the axes of the mobile asset, determining a y-axis translated raw acceleration value by translating the y-axis raw acceleration value to the axes of the mobile asset, and determining a z-axis translated raw acceleration value by translating the z-axis raw acceleration value to the axes of the mobile asset;
• k. translating the axes of the inertial navigation sensor board to the axes of the mobile asset and determining an x-axis translated filtered acceleration value by translating the x-axis filtered acceleration value to the axes of the mobile asset, determining a y-axis translated filtered acceleration value by translating the y-axis filtered acceleration value to the axes of the mobile asset, and determining a z-axis translated filtered acceleration value by translating the z-axis filtered acceleration value to the axes of the mobile asset;
• l. determining an x-axis filtered threshold value by adding the x-axis translated filtered acceleration value to the x-axis acceleration threshold;
• m. determining a y-axis filtered threshold value by adding the y-axis translated filtered acceleration value to the y-axis acceleration threshold:
• n. determining a z-axis filtered threshold value by adding the z-axis translated filtered acceleration value to the z-axis acceleration threshold;
• and
• o. continually comparing the x-axis filtered threshold value to the x-axis translated raw acceleration value, the y-axis filtered threshold value to the y-axis translated raw acceleration value, and the z-axis filtered threshold value to the translated raw acceleration value.