Patents by Inventor Christian Wietfeld
Christian Wietfeld 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: 10325506Abstract: A method for monitoring an airspace includes a first control and detection system and a second control and detection system. The first control and detection system has a first flying device and a first control and detection unit, and the second control and detection system has a second flying device and a second control and detection unit. An airspace monitoring system is different from the first control and detection unit and also from the second control and detection unit. First data relating to the first flying device is transmitted from the first control and detection unit to the airspace monitoring system, and data based on the first data is transmitted from the airspace monitoring system to the second control and detection unit. In this manner, the method allows a system-independent airspace monitoring process.Type: GrantFiled: April 8, 2015Date of Patent: June 18, 2019Assignee: TECHNISCHE UNIVERSITÄT DORTMUNDInventors: Niklas Goddemeier, Sebastian Rohde, Christian Wietfeld
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Patent number: 10017067Abstract: The present invention relates to a method for ensuring functional reliability of components (5), which participate in a charging operation, of the electromobility technology of an actuator (4) which is formed in particular as an electric vehicle or electric charging station, in connection with the charging operation or during a test, wherein at least one of the participating components (5) comprises a module (6) for the implementation of security functions in which a first assigned certificate of a technical test station (3) concerning a means for carrying out a self-diagnosis of the component (5) and a second assigned certificate (11) of a manufacturer (2) are stored, characterized by the following steps to be carried out in the participating components (5): (1a) activating a self-diagnosis, (1b) providing a result of the self-diagnosis of the component (5) with a signature by means of the second assigned certificate (11) of the manufacturer (2), (1c) transmitting to the technical test station (3) the resultType: GrantFiled: August 9, 2012Date of Patent: July 10, 2018Assignee: TECHNISCHE UNIVERSITAT DORTMUNDInventors: Sven Gröning, Jens Schmutzler, Christian Wietfeld
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Publication number: 20170025023Abstract: The invention relates to a method for monitoring an airspace, comprising a first control and detection system (100) and a second control and detection system (200). The first control and detection system (100) has a first flying device (110) and a first control and detection unit (120), and the second control and detection system (200) has a second flying device (210) and a second control and detection unit (220). According to the invention, an airspace monitoring system (300) which is different from the first control and detection unit (120) and the second control and detection unit (220) is provided; first data (130) relating to the first flying device (110) is transmitted from the first control and detection unit (120) to the airspace monitoring system (300), and data (310) based on the first data (130) is transmitted from the airspace monitoring system (300) to the second control and detection unit (210). In this manner, a method is provided which allows a system-independent airspace monitoring process.Type: ApplicationFiled: April 8, 2015Publication date: January 26, 2017Applicant: TECHNISCHE UNIVERSITÄT DORTMUNDInventors: NIKLAS GODDEMEIER, SEBASTIAN ROHDE, CHRISTIAN WIETFELD
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Patent number: 9374378Abstract: An access method for accessing a protected communication service via a public communication network by using a secure communication network, whereby the secure communication network is based on user groups, including defining an access group having access to the communication service based on the user groups of the secure communication network, generating a group key for all members of the access group, providing the group key to a member of the access group via the secure communication network, and accessing the communication service via the public communication network using the group key, is provided. A communication system including a secure communication network based on user groups, a public communication network, a protected communication service, and an access server for managing access rights to the communication service, whereby the communication system implements the above method is further provided.Type: GrantFiled: October 19, 2011Date of Patent: June 21, 2016Assignee: TECHNISCHE UNIVERSITÄT DORTMUNDInventors: Christian Wietfeld, Mohamad Sbeiti, Sebastian Subik, Andreas Wolff
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Publication number: 20160052416Abstract: The present invention relates to a method for ensuring functional reliability of components (5), which participate in a charging operation, of the electromobility technology of an actuator (4) which is formed in particular as an electric vehicle or electric charging station, in connection with the charging operation or during a test, wherein at least one of the participating components (5) comprises a module (6) for the implementation of security functions in which a first assigned certificate of a technical test station (3) concerning a means for carrying out a self-diagnosis of the component (5) and a second assigned certificate (11) of a manufacturer (2) are stored, characterised by the following steps to be carried out in the participating components (5): (1a) activating a self-diagnosis, (1b) providing a result of the self-diagnosis of the component (5) with a signature by means of the second assigned certificate (11) of the manufacturer (2), (1c) transmitting to the technical test station (3) the resultType: ApplicationFiled: August 9, 2012Publication date: February 25, 2016Inventors: Christian Wietfeld, Sven Gröning, Jens Schmutzler
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Publication number: 20150286759Abstract: The present invention relates to a computer-implemented method for a hybrid simulation of an electric power distribution network and an associated communication network connected therewith to determine a time delay between an event occurring in the power distribution network and a desired effect of a performed measure in the power distribution network, the measure having been decided on by means of a decision-making algorithm as a reaction to the event.Type: ApplicationFiled: July 11, 2013Publication date: October 8, 2015Inventors: Christian Rehtanz, Sven Christian Mueller, Kay Goerner, Christian Wietfeld, Kai Hanno Georg, Andreas Lewandowski, Christian Haegerling
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Patent number: 9035759Abstract: An approach warning system includes at least one marking module and a warning module. The at least one marking module comprises a marking module transmission unit configured to emit electromagnetic signals, and a motion detector configured to detect a motion. The at least one marking module is configured to emit presence signals as the electromagnetic signals when a motion is detected. The warning module comprises a reception unit configured to receive the electromagnetic signals emitted by the at least one marking module, and an output device configured to emit an approach warning. The warning module is configured to emit the approach warning via the output device dependent on a reception of the presence signals emitted by the at least one marking module.Type: GrantFiled: May 30, 2011Date of Patent: May 19, 2015Assignee: TECHNISCHE UNIVERSITAET DORTMUNDInventors: Christian Wietfeld, Andreas Lewandowski, Volker Koester
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Patent number: 8917188Abstract: The present invention relates to a method for detecting and warning against wrong-way drivers, the method comprising the following steps: a) establishing a radio field over a roadway section to be monitored and at least substantially transversely to a predetermined correct driving direction of the roadway section, the radio field having at least two radio field sections that are spaced apart when viewed in the driving direction and have associated reception field strengths; b) detecting attenuations of the reception field strengths of the radio field sections that occur due to radio shadowing during driving through the roadway section; c) determining the sequence of the radio field sections in which an attenuation of the respectively associated reception field strengths has been detected; d) comparing the determined attenuation sequence with the correct driving direction; and e) initiating at least one warning signal if the attenuation sequence runs opposite to the correct driving direction.Type: GrantFiled: June 28, 2011Date of Patent: December 23, 2014Assignees: Wilhelm Schroeder GmbH, Technische Universitaet DortmundInventors: Christian Wietfeld, Andreas Lewandowski, Kai Okulla
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Publication number: 20140282953Abstract: The present invention relates to an access method for accessing a protected communication service via a public communication network by means of a secure communication network, whereby the secure communication network is based on user groups, comprising the steps of defining an access group having access to the communication service based on the user groups of the secure communication network, generating a group key for all members of the access group, providing the group key to a member of the access group via the secure communication network, and accessing the communication service via the public communication network using the group key. The present invention further relates to a communication system comprising a secure communication network based on user groups, a public communication network, a protected communication service, and an access server for managing access rights to the communication service, whereby the communication system is adapted to execute the above method.Type: ApplicationFiled: October 19, 2011Publication date: September 18, 2014Applicant: TECHNISCHE UNIVERSITÄT DORTMUNDInventors: Christian Wietfeld, Mohamad Sbeiti, Sebastian Subik, Andreas Wolff
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Publication number: 20130176144Abstract: An approach warning system includes at least one marking module and a warning module. The at least one marking module comprises a marking module transmission unit configured to emit electromagnetic signals, and a motion detector configured to detect a motion. The at least one marking module is configured to emit presence signals as the electromagnetic signals when a motion is detected. The warning module comprises a reception unit configured to receive the electromagnetic signals emitted by the at least one marking module, and an output device configured to emit an approach warning. The warning module is configured to emit the approach warning via the output device dependent on a reception of the presence signals emitted by the at least one marking module.Type: ApplicationFiled: May 30, 2011Publication date: July 11, 2013Applicant: TECHNISCHE UNIVERSITAET DORTMUNDInventors: Christian Wietfeld, Andreas Lewandowski, Volker Koester
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Publication number: 20130147639Abstract: The present invention relates to a method for detecting and warning against wrong-way drivers, the method comprising the following steps: a) establishing a radio field over a roadway section to be monitored and at least substantially transversely to a predetermined correct driving direction of the roadway section, the radio field having at least two radio field sections that are spaced apart when viewed in the driving direction and have associated reception field strengths; b) detecting attenuations of the reception field strengths of the radio field sections that occur due to radio shadowing during driving through the roadway section; c) determining the sequence of the radio field sections in which an attenuation of the respectively associated reception field strengths has been detected; d) comparing the determined attenuation sequence with the correct driving direction; and e) initiating at least one warning signal if the attenuation sequence runs opposite to the correct driving direction.Type: ApplicationFiled: June 28, 2011Publication date: June 13, 2013Applicants: TECHNISCHE UNIVERSITAET DORTMUND, WILHELM SCHROEDER GMBHInventors: Christian Wietfeld, Andreas Lewandowski, Kai Okulla
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Publication number: 20050091370Abstract: Monitoring data transmissions in a telecommunication network between a service user computer belonging to a service user and a service computer. A service request message from the service user computer prompts an intermediate node in the telecommunication network, which intermediate node is arranged between the service user computer and the service computer providing the requested service, to transmit an intermediate-node service request message to the service computer. The intermediate node then receives a service message from the service computer, which service message includes user data for the requested service and a service use parameter associated with the service, and the intermediate node reads the service use parameter from the service message and transmits it to a central parameter storage system in the telecommunication network. The parameter storage system stores the service use parameter on a user related basis, and the intermediate node transmits the user data to the service user computer.Type: ApplicationFiled: June 4, 2004Publication date: April 28, 2005Applicant: Siemens AktiengesellschaftInventor: Christian Wietfeld
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Publication number: 20040133681Abstract: Method for creating or changing subscriber-related entries in a first database of a service which is implemented using HTTP. According to the method, a previously implemented trigger is activated on the basis of an HTTP proxy platform when the service is called. User-entered service-related and subscriber-related data is called from a second database and is created or modified in the first database and after installation is complete. The trigger in the platform is deactivated on a subscriber-related basis.Type: ApplicationFiled: October 7, 2003Publication date: July 8, 2004Applicant: Siemens AGInventor: Christian Wietfeld
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Publication number: 20020009990Abstract: A method for setting up a telephone conference between more than two subscribers of a telecommunication network in a simple ergonomic way in that, when a telephone conference is requested by a subscriber of a telecommunication network, subscribers stored in a list are connected together via a bridge to form a telephone conference together with the subscriber requesting the telephone conference.Type: ApplicationFiled: June 20, 2001Publication date: January 24, 2002Applicant: Mannesmann AG Siemens AGInventors: Stephan Kleier, Frank Timphus, Christian Wietfeld, Christian Herzog