Patent 9033114 was granted and assigned to Inventio on May, 2015 by the United States Patent and Trademark Office.
Elevator car position information can be determined based at least in part on readings from a sensor attached to the elevator car. The sensor readings provide movement information for the car. Some elevator installations are also configured with additional sensors for calibrating the sensor attached to the elevator car. The sensors can be used with, for example, an elevator installation that is being modernized.