Patents by Inventor Carsten Landwehr
Carsten Landwehr has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8576707Abstract: A method and an apparatus are provided, which provide for single-channel bus coupling of safety-relevant processes. The method is distinguished in that a data record which is relevant for the safety-critical process is processed via at least two redundant processing channels, in particular on a protocol-specific basis, in accordance with identical laws for in each case one safe protocol and the redundant safety messages for single-channel bus coupling are joined together to form a common safe protocol, to be precise in that each of the processing channels accesses a common buffer register, with write authorization for each register location being allocated only once, in such a way that the common safe protocol is joined together in components by in each case writing in different components of the respective safety messages.Type: GrantFiled: August 17, 2005Date of Patent: November 5, 2013Assignee: Phoenix Contact GmbH & Co. KGInventors: Heinz-Carsten Landwehr, Viktor Oster, Rainer Esch
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Patent number: 8284531Abstract: A voltage protection arrangement for an electronic device, in particular for a control system in automation engineering has a great functionality, and also a greater range of applications, due to the fact that the arrangement has a switching-off unit and a voltage detection unit connected to the output of the switching-off unit, the switching-off unit having a voltage comparator and a normally electrically closed switch connected to the output of the voltage comparator, arranged between the input and the output of the switching-off unit, wherein the voltage detection unit has a voltage comparator and a switch output connected to the output of the voltage comparator for signaling an impermissible voltage, and wherein, in the event of an impermissible voltage occurring at the input of the switching-off unit, the electrical switch is opened and, in the event of a subsequent permissible voltage occurring, the switch is closed again.Type: GrantFiled: December 21, 2007Date of Patent: October 9, 2012Assignee: Phoenix Contact GmbH & Co. KGInventor: Heinz-Carsten Landwehr
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Patent number: 7945818Abstract: A method and an apparatus are disclosed for the coupling of a safety-critical process from a safe environment to an environment that is not safe or to an environment that is safe but has fewer processing channels. To this end, provision is made of a method which processes a data record that is relevant to the safety-critical process to form a respective safe protocol using at least two redundant processing channels in accordance with identical laws, and forms a common safe protocol taking into account at least two redundant safe coupling protocols. When writing at least elements of the common safety-based protocol using a processing channel with write authorization, another processing channel is used to check whether these elements are identical to one another. Access to a common buffer register for the purpose of storing these elements is enabled only when they are identical to one another.Type: GrantFiled: January 18, 2007Date of Patent: May 17, 2011Assignee: Phoenix Contact GmbH & Co. KGInventors: Viktor Oster, Heinz-Carsten Landwehr, Joachim Schmidt
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Publication number: 20100321844Abstract: A voltage protection arrangement for an electronic device, in particular for a control system in automation engineering has a great functionality, and also a greater range of applications, due to the fact that the arrangement has a switching-off unit and a voltage detection unit connected to the output of the switching-off unit, the switching-off unit having a voltage comparator and a normally electrically closed switch connected to the output of the voltage comparator, arranged between the input and the output of the switching-off unit, wherein the voltage detection unit has a voltage comparator and a switch output connected to the output of the voltage comparator for signaling an impermissible voltage, and wherein, in the event of an impermissible voltage occurring at the input of the switching-off unit, the electrical switch is opened and, in the event of a subsequent permissible voltage occurring, the switch is closed again.Type: ApplicationFiled: December 21, 2007Publication date: December 23, 2010Applicant: PHOENIX CONTACT GMBH & CO. KGInventor: Heinz-Carsten Landwehr
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Patent number: 7809449Abstract: Generally, a means for coupling widely differing fieldbus or network systems to their own respective safety mechanisms is provided, in such a way as to ensure the transmission of safety data between at least two bus/network systems with different safety mechanisms. A method and an apparatus are provided for coupling at least two (field)bus/network systems to respectively different safety mechanisms, in particular respective proprietary safety mechanisms, with safety data which is to be transmitted between the different system-based safety mechanisms being processed additionally using a safe data structure which is defined but is system-independent.Type: GrantFiled: March 3, 2006Date of Patent: October 5, 2010Assignee: Phoenix Contact GmbH & Co. KGInventors: Rainer Esch, Heinz-Carsten Landwehr
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Patent number: 7567095Abstract: The invention relates to an output circuit for an output module for switching at least one connected load. The task of the invention is to present a circuit for output-side switching of at least one connected load, especially a circuit that also satisfies the standards DIN EN 954-1 or IEC 61508. The invention proposes an output circuit for an output module for switching at least one connected load, especially an inductive load, which is distinguished by a one-channel peripheral terminal (PA) for connecting the one or more loads and which comprises at least two driver modules (101; 102), especially FET transistors, connected in series between a power-supply voltage and the peripheral terminal, wherein each of the driver modules is connected to a logic unit assigned to the output module for controlling the driver modules via a separate control channel (OUT_LK1, IC10; OUT_LK2; IC20).Type: GrantFiled: June 29, 2007Date of Patent: July 28, 2009Assignee: Phoenix Contact GmbH & Co. KGInventors: Viktor Oster, Carsten Landwehr
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Publication number: 20080012623Abstract: The invention relates to an output circuit for an output module for switching at least one connected load. The task of the invention is to present a circuit for output-side switching of at least one connected load, especially a circuit that also satisfies the standards DIN EN 954-1 or IEC 61508. The invention proposes an output circuit for an output module for switching at least one connected load, especially an inductive load, which is distinguished by a one-channel peripheral terminal (PA) for connecting the one or more loads and which comprises at least two driver modules (101; 102), especially FET transistors, connected in series between a power-supply voltage and the peripheral terminal, wherein each of the driver modules is connected to a logic unit assigned to the output module for controlling the driver modules via a separate control channel (OUT_LK1, IC10; OUT_LK2; IC20).Type: ApplicationFiled: June 29, 2007Publication date: January 17, 2008Applicant: PHOENIX CONTACT GMBH & CO. KGInventors: Viktor Oster, Carsten Landwehr
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Publication number: 20070180286Abstract: The invention relates to a method and to an apparatus, which has been adapted to carry out the method, for the coupling of a safety-critical process from a safe environment, which has at least two redundant processing channels, to an environment which is not safe or to an environment which is safe but has fewer processing channels.Type: ApplicationFiled: January 18, 2007Publication date: August 2, 2007Applicant: PHOENIX CONTACT GMBH & CO. KGInventors: Viktor Oster, Heinz-Carsten Landwehr, Joachim Schmidt
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Publication number: 20060229737Abstract: Generally, a means for coupling widely differing fieldbus or network systems to their own respective safety mechanisms is provided, in such a way as to ensure the transmission of safety data between at least two bus/network systems with different safety mechanisms. A method and an apparatus are provided for coupling at least two (field)bus/network systems to respectively different safety mechanisms, in particular respective proprietary safety mechanisms, with safety data which is to be transmitted between the different system-based safety mechanisms being processed additionally using a safe data structure which is defined but is system-independent.Type: ApplicationFiled: March 3, 2006Publication date: October 12, 2006Inventors: Rainer Esch, Heinz-Carsten Landwehr
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Publication number: 20060087967Abstract: The invention relates to a method and to an apparatus, which is adapted for carrying out the method, for single-channel bus coupling of safety-relevant processes. One object of the invention is to provide a new approach for the transition from multiple channels to a single channel for the safe bus coupling of safety-relevant processes.Type: ApplicationFiled: August 17, 2005Publication date: April 27, 2006Inventors: Heinz-Carsten Landwehr, Viktor Oster, Rainer Esch