Daimler Chrysler Ag

Daimler Ag

Ulrich Ensslin

Norbert Niemczyk

Hans-Gerd Seib

Bärbel Gaiser

A receiving unit for a controller for reception of input data is disclosed. The input data is transmitted as optical signals in an optical bus system in a vehicle. The receiving unit is coupled to an optical bus system and has a means for conversion of optical signals to electrical signals. A measurement arrangement is provided which measures a characteristic variable for the optical received power. The receiving unit optimizes the dynamic control of the optical level. The measurement arrangement is in the form of a digital circuit. Furthermore, an output port is provided for passing on the digitized measurement data.

Detection of optical light power

The invention relates to a method for temperature management in a network () with ring topology, wherein control devices () exchange data via the network () by means of transmitting/receiving units. The object of the present invention is to find a method and a data bus system which increases the fail safety of a network () with ring topology. For this purpose, the temperature near to the transmitting/measuring unit of at least one control device () is measured. As soon as the temperature at the transmitting/receiving unit () of the control device exceeds a predefined critical temperature T, the transmitting/receiving unit is switched off and wakeup requests put onto the network () by the control devices () are blocked.

Temperature management in ring topology networks

Temperature-sensitive electrical and electronic components which are connected to a board by soldering during the installation process are protected from the heat during the soldering process in order to prevent permanent damage to the components. The solder connections of the component are thermally coupled to a protection apparatus during the soldering process, so that some of the heat which is introduced into the solder connections during the soldering process is passed to the protection apparatus. The protection apparatus also has a protection sleeve, which surrounds the component in places. The protection sleeve is advantageously composed of a thermally insulated material, and is provided with a coating with a high thermal reflection capability in places on its outer wall which faces away from the component.

Growing community of inventors

Stuttgart, Germany

Ulrich Ensslin