Method and device for bus arbitration, converter and production facility

US8639867B2 · kind B2 · utility

Assignee

• SEW-EURODRIVE GMBH & CO. KG · DE

Inventors

• Zhidong Hua · Bruchsal, DE
• Olaf Simon · Weingarten, DE
• Wenwang Zhou · Stuttgart, DE
• Cornelius Mertzlufft-Paufler · Freiburg im Breisgau, DE

Key dates

• Filing date: Oct 18, 2007
• Grant date: Jan 28, 2014
• Expiry date: Dec 15, 2030

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04W74/00
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

A method for bus arbitration is for use when working with multi-carrier modulation methods. Each user on a bus is assigned a unique address which identifies the user and which is transmitted upon each initiation of communication. The address is represented as a sequence of binary numerals, the number of bits of the binary numerals being equal to the number of carriers used in the multi-carrier modulation method. This sequence of binary numerals is transmitted successively for the arbitration via the multi-carrier modulation method, a user being eliminated from the arbitration when a further user at the same time has transmitted a binary numeral having higher priority. The transmission of the binary numeral may be repeated if the arbitration of the numeral does not lead to a result in one step. The method for bus arbitration may be used advantageously in a system for contactless energy supply. A redundant sending of phase-shifted signals reduces the failure rate because of random destructive interference.