Serial data bus, motion system and method for the event-driven transmission of messages

• US 20070189323A1
• Filed: 09/21/2004
• Published: 08/16/2007
• Est. Priority Date: 09/29/2003
• Status: Abandoned Application

• Current Assignee: Berghof Automationstechnik GmbH, Eisenmann Maschinenbau GmbH & Co. KG.
• Original Assignee: Berghof Automationstechnik GmbH, Eisenmann Maschinenbau GmbH & Co. KG.
• Inventors: Swoboda, Werner, Ott, Franz, Arnold, Friedrich, Hagel, Benno
• Application Number:
  US10/574,042
• Publication Number:
  US 20070189323A1
• Time in Patent Office: Days
• US Class Current: 370/451
• CPC Class Codes: H04B 5/48 Transceivers
• CPC Class Codes: H04L 12/4015 by scheduling the transmission of messages at the communication node
• CPC Class Codes: H04L 12/4135 using bit-wise arbitration
• CPC Class Codes: H04L 2012/40215 Controller Area Network CAN
• CPC Class Codes: H04L 2012/40273 the transportation system being a vehicle
• CPC Class Codes: H04L 25/0266 Arrangements for providing Galvanic isolation, e.g. by means of magnetic or capacitive coupling

Abstract

The invention relates to a serial data bus including a data line for transmitting electrical signals representing bit states and a plurality of multi-master subscribers between which messages can be exchanged via the data line in an event-driven manner according to the broadcast principle. At least two subscribers have a transceiver head, inductively connected to the data line, via which contactless electrical signals are picked up from the data line or transferred thereto. An amplifier (is galvanically connected to the data line and is adapted to receive electrical signals that have been inductively transferred by the at least two subscribers to the data line and to feed them back to the data line once amplified. Due to its inductive connection, the data bus is especially low-maintenance and also suitable for hazardous surroundings. The contactless connection makes the data bus especially suitable for use in transport systems in production engineering and generally for use in systems having parts that are mobile relative one another and between which a data exchange is desired.

Claims