Bus master for a bus for connection of sensors and/or ignition means

US7400641B2 · kind B2 · utility

Assignees

• Robert Bosch GmbH · DE
• Conti Temic microelectronic GmbH · DE
• Siemens Aktiengesellschaft · DE

Inventors

• Werner Nitschke · Ditzingen, DE
• Klaus-Dieter Meier · Leonberg, DE
• Knut Balzer · Beilstein, DE
• Ewald Mauritz · Rutesheim, DE
• Heiko Buehring · Oldenburg, DE
• Hans Bogenrieder · Ingolstadt, DE
• Bernd Pfaffeneder · Regensburg, DE
• Holger Wulff · Ingolstadt, DE

Key dates

• Filing date: Mar 28, 2002
• Grant date: Jul 15, 2008
• Expiry date: Jun 15, 2024

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60R2021/01286
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A bus master for a bus for connection of sensors and/or an ignition means device, which has at least two bus driver arrangements allowing data to be received independently of one another. For this purpose a polling operation, specifically using a multiplexer or a demodulator associated through one of the particular bus driver arrangements, is used. Furthermore, a state machine is provided, which also alternatingly determines the system status on the basis of the measured quantities determined on the bus conductor for the particular bus driver arrangement. In a refinement, a particular bus driver may have a dedicated processor for system status determination.