Patents by Inventor Chellury R. Sastry
Chellury R. Sastry 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: 8552597Abstract: A radio frequency energy harvester harvests RF energy from the environment. The energy harvester may include a local power source. The energy harvester may have an associated crystal radio antenna that harvests AM radio waves ubiquitously. The radio frequency energy harvested may be stored via a super capacitor. The stored energy may power a self-contained processing unit directly when the level of the energy harvested remains above a threshold level. However, if the energy harvested drops below the threshold level, the processing unit, which may include a radio, may switch to the local power source and/or a low power mode of operation. The low power mode of operation may reduce the amount of processing and/or transmitting by the radio. The processing unit may be part of a network of radios. The energy harvester may supply energy for a variety of applications, including building automation, industrial automation, power generation, and healthcare.Type: GrantFiled: March 27, 2007Date of Patent: October 8, 2013Assignee: Siemens CorporationInventors: Zhen Song, Chellury R. Sastry
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Patent number: 8326465Abstract: A building system includes a communication network, a plurality of wireless nodes, a plurality of passive wireless devices, a plurality of sensors, and a processing circuit. The wireless nodes are disposed within a building and are operably coupled to the communication network. Each passive wireless device is affixed to an object within the building, and contains first information regarding at least one property of the object. Each the passive wireless device is configured to communicate wirelessly to the wireless nodes using power derived from communication signals detected in the passive wireless device. The sensors are configured to generate second information representative of sensed temperature throughout the building, each sensor operably connected to the communication network. The processing circuit is operably coupled to receive the first information from the wireless devices and the second information from the sensors.Type: GrantFiled: September 3, 2009Date of Patent: December 4, 2012Assignee: Siemens Industry, Inc.Inventors: Justinian Rosca, Osman Ahmed, Chellury R. Sastry, Richard John LeBlanc
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Patent number: 8315839Abstract: A building system includes a communication network, a plurality of wireless nodes, a plurality of passive wireless devices, and a processing circuit. The plurality of wireless nodes are disposed within a building operably and are coupled to the communication network. Each of the passive wireless devices is affixed to or within an object within the building. At least some of the objects constitute fixtures within the building. Each passive wireless device contains first information regarding at least one property of the object, and is configured to communicate wirelessly to at least one of the wireless nodes using power derived from communication signals detected in the passive wireless device. The processing circuit operably is coupled to receive the first information from the wireless devices, the processing circuit configured to update a model of at least a portion of a building based at least in part on the at least one property of the objects.Type: GrantFiled: September 3, 2009Date of Patent: November 20, 2012Assignee: Siemens Industry, Inc.Inventors: Justinian Rosca, Osman Ahmed, Chellury R. Sastry
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Publication number: 20120256492Abstract: A radio frequency energy harvester harvests RF energy from the environment. The energy harvester may include a local power source. The energy harvester may have an associated crystal radio antenna that harvests AM radio waves ubiquitously. The radio frequency energy harvested may be stored via a super capacitor. The stored energy may power a self-contained processing unit directly when the level of the energy harvested remains above a threshold level. However, if the energy harvested drops below the threshold level, the processing unit, which may include a radio, may switch to the local power source and/or a low power mode of operation. The low power mode of operation may reduce the amount of processing and/or transmitting by the radio. The processing unit may be part of a network of radios. The energy harvester may supply energy for a variety of applications, including building automation, industrial automation, power generation, and healthcare.Type: ApplicationFiled: March 27, 2007Publication date: October 11, 2012Applicant: SIEMENS CORPORATE RESEARCH, INC.Inventors: Zhen Song, Chellury R. Sastry
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Patent number: 8112381Abstract: Machine condition monitoring on a system utilizes a wireless sensor network to gather data from a large number of sensors. The data is processed using a multivariate statistical model to determine whether the system has deviated from a normal condition. The wireless sensor network permits the acquisition of a large number of distributed data points from plural system modalities, which, in turn, yields enhanced prediction accuracy and a reduction in false alarms.Type: GrantFiled: October 15, 2008Date of Patent: February 7, 2012Assignee: Siemens CorporationInventors: Chao Yuan, Claus Neubauer, Chellury R. Sastry, Stefan Galler
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Patent number: 7966104Abstract: A controller for controlling thermal sources affecting an air temperature in a space subjected to thermal variables, including a sensor network measuring the thermal variables; a feed forward controller generating a feed forward control signal based on an adaptive model including a model of the space and a model of the thermal sources, wherein the models are formed utilizing data from the sensor network; a feedback controller generating a feedback control signal based on a difference between an output of the feed forward controller and output from the space; and a combiner combining the feed forward and feedback control signals to produce a control signal for controlling the thermal sources to control the air temperatures of the space.Type: GrantFiled: March 25, 2008Date of Patent: June 21, 2011Assignee: Siemens CorporationInventors: Viraj Srivastava, Chellury R. Sastry, David H. Archer
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Publication number: 20100262298Abstract: A system and method for calibrating a set-point for climate control includes a sensor network having a plurality of sensors configured to report a climate condition. A database is configured to receive reports from the sensors and generate one or more profiles reflecting at least one of historic climate control information and occupant preferences. A controller is configured to receive information from the profiles to generate a set-point based upon an optimization program. The optimization program is implemented to balance competing goals to generate the set-point for controlling climate control equipment in accordance with the set-point.Type: ApplicationFiled: March 27, 2009Publication date: October 14, 2010Applicant: Siemens Energy & Automation, Inc.Inventors: Joseph Andrew Johnson, Chellury R. Sastry, Xu Ning, Amar Patel, Virag Srivastava
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Publication number: 20100121613Abstract: A building system includes a communication network, a plurality of wireless nodes, a plurality of passive wireless devices, and a processing circuit. The plurality of wireless nodes are disposed within a building operably and are coupled to the communication network. Each of the passive wireless devices is affixed to or within an object within the building. At least some of the objects constitute fixtures within the building. Each passive wireless device contains first information regarding at least one property of the object, and is configured to communicate wirelessly to at least one of the wireless nodes using power derived from communication signals detected in the passive wireless device. The processing circuit operably is coupled to receive the first information from the wireless devices, the processing circuit configured to update a model of at least a portion of a building based at least in part on the at least one property of the objects.Type: ApplicationFiled: September 3, 2009Publication date: May 13, 2010Inventors: Justinian Rosca, Osman Ahmed, Chellury R. Sastry
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Publication number: 20100114383Abstract: A building system includes a communication network, a plurality of wireless nodes, a plurality of passive wireless devices, a plurality of sensors, and a processing circuit. The wireless nodes are disposed within a building and are operably coupled to the communication network. Each passive wireless device is affixed to an object within the building, and contains first information regarding at least one property of the object. Each the passive wireless device is configured to communicate wirelessly to the wireless nodes using power derived from communication signals detected in the passive wireless device. The sensors are configured to generate second information representative of sensed temperature throughout the building, each sensor operably connected to the communication network. The processing circuit is operably coupled to receive the first information from the wireless devices and the second information from the sensors.Type: ApplicationFiled: September 3, 2009Publication date: May 6, 2010Inventors: Justinian Rosca, Osman Ahmed, Chellury R. Sastry
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Publication number: 20090119243Abstract: Machine condition monitoring on a system utilizes a wireless sensor network to gather data from a large number of sensors. The data is processed using a multivariate statistical model to determine whether the system has deviated from a normal condition. The wireless sensor network permits the acquisition of a large number of distributed data points from plural system modalities, which, in turn, yields enhanced prediction accuracy and a reduction in false alarms.Type: ApplicationFiled: October 15, 2008Publication date: May 7, 2009Applicant: Siemens Corporate Research, Inc.Inventors: Chao Yuan, Claus Neubauer, Chellury R. Sastry, Stefan Galler
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Publication number: 20090005912Abstract: A controller for controlling thermal sources affecting an air temperature in a space subjected to thermal variables, including a sensor network measuring the thermal variables; a feed forward controller generating a feed forward control signal based on an adaptive model including a model of the space and a model of the thermal sources, wherein the models are formed utilizing data from the sensor network; a feedback controller generating a feedback control signal based on a difference between an output of the feed forward controller and output from the space; and a combiner combining the feed forward and feedback control signals to produce a control signal for controlling the thermal sources to control the air temperatures of the space.Type: ApplicationFiled: March 25, 2008Publication date: January 1, 2009Applicant: Siemens CorporationInventors: Viraj Srivastava, Chellury R. Sastry, David H. Archer
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Patent number: 7418305Abstract: A computer-implemented method for generating a description of a component of an automation system comprises describing the component as a plurality of inputs and outputs, generating a vendor-independent component description file based on a description of the component as the plurality of inputs and outputs, updating the vendor-independent component description file to include vendor-specific hardware information and hardware control logic, and creating the component based on an updated vendor-specific component description.Type: GrantFiled: October 18, 2005Date of Patent: August 26, 2008Assignee: Siemens Corporate Research, Inc.Inventors: Ralph Buesgen, Edwin Anthony Prince, Chellury R. Sastry, Peng Zhao, Georg Biehler, Richard Miceli
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Patent number: 6871318Abstract: A system for authoring, distributing, and replaying derivative hypermedia content comprises an authoring system for recording dynamic annotations and a distribution system for distributing the recorded dynamic annotations. The present system includes a playing system for playing the dynamic annotations which have been distributed. The system is applicable to the Internet or World-Wide Web (WWW) and/or to Intranet use.Type: GrantFiled: December 18, 1998Date of Patent: March 22, 2005Assignee: Siemens Corporate Research, Inc.Inventors: Michael Wynblatt, Arturo Pizano, Arding Hsu, Daniel C. Benson, Chellury R. Sastry, Vivek Agrawala
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Patent number: 6687877Abstract: A web-based call center and a method for its operation include multiple agent and customer terminals connected to a web server. The agent terminals and the customer terminals include a web browser for accessing web documents from the web server and annotation plug-in software for recording and replaying static and dynamic annotations on web documents. An HTML document registration tool formats web documents prior to storage on the web server, so that the web documents are formatted for annotation. An annotation server includes a database for storing annotated documents received from agent and customer terminals. Indexing software associated with the annotation server extracts key information from annotations received from customer terminals as part of callback requests. The extracted key information is indicative of a skills set which is required by an agent in order to handle the callback request. An ACD server utilizes the key information to route callback requests to qualified call center agents.Type: GrantFiled: February 17, 1999Date of Patent: February 3, 2004Assignees: Siemens Corp. Research Inc., Siemens Information & Communication Networks, Inc.Inventors: Chellury R. Sastry, Darrin P. Lewis, Arturo Pizano, Uwe Wrede, Michael Sassin, Shmuel Shaffer