Siemens Aktiengesellschaft

Continental Automotive Gmbh

Oliver Nelles

Friedrich Graf

Gregor Probst

Alexander Fink

Walter Sassler

Mathias Deiml

Martin Lachmayr

Martin Manz

Tanja Roy

A method determines a direction of rotation of a rotating body about its axis of rotation by measuring two acceleration signals x and y with an acceleration sensor. The two acceleration signals x and y are at a 90&#xb0; angle to each other, are oriented not parallel to the axis of rotation, and both a centrifugal acceleration generated by a circular movement and a gravitational acceleration are taken into account. The measured acceleration signals x and y are differentiated mathematically. The differentiated x acceleration signal is differentiated a further time and correlated with a y signal that has been differentiated once for obtaining a correlation function. The differentiated y acceleration signal can be differentiated a further time and correlated with the x signal that has been differentiated once for obtaining a second correlation function. The method determines the direction of rotation of rotating tires of a motor vehicle.

Methods for determining the direction of rotation of rotating bodies

A data storage system for a motor vehicle has at least two control units () for controlling one or several vehicle components each, at least two memories () for storing data that characterize the route to be traveled on in future, and an interface () to a data source (). Every control unit () inquires with the data source () a subset of the route data contained therein via the interface () and stores the route data transmitted in response in the memory () associated with the respective control unit ().

Data storage system for a motor vehicle and method for storing data in a motor vehicle

Growing community of inventors

Siegen, Germany

Oliver Nelles