Abstract: Damage caused by accidents that occur during autonomous driving of a motor vehicle should be reliably detected. For this purpose, a transport facility with a driving area which can be autonomously driven by a motor vehicle, has a detection device for detecting a first state of the motor vehicle in an entrance area outside the driving area and for detecting a second state in an exit area located within the driving area. In addition, transport facility has an evaluation device for determining a possible difference between the second state and the first state relating to damage of the motor vehicle.
Abstract: A global positioning system (GPS) receiver and high accuracy low power time source (HAL) are disclosed. The HAL provides a time source having an accuracy which is high enough for the receiver to achieve fast direct Y-code acquisition. The HAL includes an oscillator adapted to provide an uncompensated frequency signal at a desired frequency. Frequency conversion circuitry receives the uncompensated frequency signal and a control signal as inputs, and provides as an output a compensated frequency signal having an average compensated frequency which is closer to the desired frequency than is the average uncompensated frequency. A temperature sensor provides an output indicative of a temperature of the oscillator. Frequency error determining circuitry determines an error value, as a function of the temperature sensor output, which is indicative of a quantity of frequency error over time in the uncompensated frequency signal.
Type:
Grant
Filed:
September 30, 1997
Date of Patent:
August 17, 1999
Assignee:
Rockwell International Corporation
Inventors:
Daniel C. Forseth, Paul G. Jagnow, Mark W. Johnson, F. Britt Snodgrass, Larry D. Vittorini