Patents by Inventor Chaojun Xu
Chaojun Xu 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: 11501036Abstract: A system model creating and simulation device for a process control system obtains description files of process modules including inputs, outputs and process control devices therebetween, where each description file specifies, for the corresponding module, connection terminals in the form of inputs and outputs, the process control devices and the interconnection of process control devices between the connection terminals, analyses of the description files, having determining a connection terminal of a first process module matching a connection terminal of a second process module, determines connections between the process modules based on the analysis, having determining a connection between the matching connection terminals, selecting simulation objects corresponding to the process control devices of the process modules, interconnecting the simulation objects according to data in the description files as well as through the connections determined between the process modules for forming a simulation model, anType: GrantFiled: March 20, 2019Date of Patent: November 15, 2022Assignee: ABB Schweiz AGInventors: Axel Haller, Chaojun Xu, Mario Hoernicke, Rainer Drath
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Publication number: 20220360944Abstract: Methods and apparatus for sensor selection for localization and tracking are provided. A method (300) performed at an access point (101, 101a, 101b, 101c, 901, 902, 903) comprises: determining, a detectability of the access point (101, 101a, 101b, 101c, 901, 902, 903) for localization for a target device (102), based on channel state information of a radio link between the target device (102) and the access point (101, 101a, 101b, 101c, 901, 902, 903) (302); and determining whether the access point (101, 101a, 101b, 101c, 901, 902, 903) is to be used for position estimation of the target device (102) or not based on the detectability (304). A localization server (103) may further eliminate access points (101, 101a, 101b, 101c, 901, 902, 903) at poor positions from position estimation, by using a predefined weighted-kernel approach.Type: ApplicationFiled: September 25, 2019Publication date: November 10, 2022Inventors: Fei GAO, Chaojun XU, Gang SHEN
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Patent number: 11327146Abstract: Embodiments of the present disclosure relate to a method, a device and a computer readable medium for determining a location of a communication device. According to the embodiments of the present disclosure, a network device determines a location of a terminal device relative to a network device using signals received from the terminal device via a reference antenna and a switchable antenna array, thereby improving precision of determining the location of the terminal device.Type: GrantFiled: October 9, 2018Date of Patent: May 10, 2022Assignee: Alcatel LucentInventors: Fei Gao, Chaojun Xu, Gang Shen
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Publication number: 20220061013Abstract: There is provided a method comprising receiving at least one measured signal characteristic from a user equipment, the user equipment being located at a user equipment location; comparing the at least one measured signal characteristic to at least one of a plurality of signal characteristics, each signal characteristic being associated with a respective measurement point; and determining, based on the comparing, a probability that the user equipment location is a first location.Type: ApplicationFiled: September 17, 2018Publication date: February 24, 2022Inventors: Jun WANG, Gang SHEN, Liuhai LI, Liang CHEN, Kan LIN, Zhihua WU, Chaojun XU, Jiexing GAO
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Patent number: 11178511Abstract: Embodiments of the disclosure provide a method and device for positioning a communication device. According to embodiments of the present disclosure, the communication device may determine, without phase information of the signals, a direction of other communication device based on an association between strength levels of signals received from the other communication device and angles at which the signals are received for better accuracy. According to embodiments of the present disclosure, the communication device may determine the direction of the other communication device without phase information of the received signals based on MUSIC algorithm. According to the embodiments of the present disclosure, the method may also be implemented in a multipath scenario.Type: GrantFiled: November 17, 2017Date of Patent: November 16, 2021Assignee: NOKIA TECHNOLOGIES OYInventors: Fei Gao, Jinxing Lu, Chaojun Xu, Gang Shen
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Publication number: 20210296775Abstract: In accordance with some embodiments, there is provided an apparatus. The apparatus includes a conductive loop; a first conductive member electromagnetically coupled to the conductive loop and galvanically coupled to a radio frequency circuit; a second conductive member arranged across and electromagnetically coupled to the conductive loop; and a third conductive member arranged across and electromagnetically coupled to the conductive loop, the third conductive member being spaced apart from the second conductive member and electromagnetically coupled to the first conductive member.Type: ApplicationFiled: August 2, 2018Publication date: September 23, 2021Inventors: Fei GAO, Chaojun XU, Gang SHEN
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Publication number: 20210199746Abstract: Embodiments of the present disclosure relate to a method, a device and a computer readable medium for determining a location of a communication device. According to the embodiments of the present disclosure, a network device determines a location of a terminal device relative to a network device using signals received from the terminal device via a reference antenna and a switchable antenna array, thereby improving precision of determining the location of the terminal device.Type: ApplicationFiled: October 9, 2018Publication date: July 1, 2021Applicant: Alcatel LucentInventors: Fei Gao, Chaojun Xu, Gang Shen
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Publication number: 20200314594Abstract: Embodiments of the disclosure provide a method and device for positioning a communication device. According to embodiments of the present disclosure, the communication device may determine, without phase information of the signals, a direction of other communication device based on an association between strength levels of signals received from the other communication device and angles at which the signals are received for better accuracy. According to embodiments of the present disclosure, the communication device may determine the direction of the other communication device without phase information of the received signals based on MUSIC algorithm. According to the embodiments of the present disclosure, the method may also be implemented in a multipath scenario.Type: ApplicationFiled: November 17, 2017Publication date: October 1, 2020Inventors: Fei GAO, Jinxing LU, Chaojun XU, Gang SHEN
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Patent number: 10606247Abstract: A process module is automatically configured for operation in a plant. During the operation of the process module in a first phase in a first operational environment, operational data that is related to the process module is received by a computer data system. In a second phase, when the process module is connected to a second operational environment, operational data is received again. The computer data system has a reply function that receives and processes a query and provides a response. Processing the query includes processing the operational data that was received during the first and second phases. The process module is then configured by using configuration parameters that are derived from the response.Type: GrantFiled: November 16, 2015Date of Patent: March 31, 2020Assignee: ABB Schweiz AGInventors: Mario Hoernicke, Chaojun Xu, Axel Haller, Rainer Drath
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Patent number: 10528042Abstract: A system for monitoring a modular process plant complex having a plurality of interconnected process modules each of which includes a plurality of interconnected physical control objects. The physical control objects and their interconnections inside a physical process module are displayed together with associated control parameters as stylized control objects on an operator display screen with four different zooming levels: a first zooming level displaying diagrams of aggregated key performance indicators of the plant complex; a second zooming level displaying diagrams of the key performance indicators; a third zooming level displaying process modules associated with a plant area of the second zooming level; and a fourth zooming level displaying one or more physical control objects included in a process module of the third zooming level together with the associated control parameters and interconnections as stylized control objects on the operator screen display.Type: GrantFiled: August 2, 2017Date of Patent: January 7, 2020Assignee: ABB Schweiz AGInventors: Axel Haller, Chaojun Xu, Mario Hoernicke, Rainer Drath, Ralf Jeske
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Publication number: 20190303516Abstract: A system model creating and simulation device for a process control system obtains description files of process modules including inputs, outputs and process control devices therebetween, where each description file specifies, for the corresponding module, connection terminals in the form of inputs and outputs, the process control devices and the interconnection of process control devices between the connection terminals, analyses of the description files, having determining a connection terminal of a first process module matching a connection terminal of a second process module, determines connections between the process modules based on the analysis, having determining a connection between the matching connection terminals, selecting simulation objects corresponding to the process control devices of the process modules, interconnecting the simulation objects according to data in the description files as well as through the connections determined between the process modules for forming a simulation model, anType: ApplicationFiled: March 20, 2019Publication date: October 3, 2019Inventors: Axel Haller, Chaojun Xu, Mario Hoernicke, Rainer Drath
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Patent number: 10409248Abstract: A configuration system and method for process automation configured to access structural process diagrams representing process components. Each process component includes interconnections between process components. Each interconnection represents a physical connection. The system has at least one processor configured to generate corresponding process object instances for process components wherein a particular component type defines at least an interlock property and/or an operating condition.Type: GrantFiled: November 2, 2015Date of Patent: September 10, 2019Assignee: ABB Schweiz AGInventors: Mario Hoernicke, Chaojun Xu, Axel Haller, Rainer Drath, Ralf Jeske
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Publication number: 20180329398Abstract: A process module (110) is automatically configured for operation in a plant (B). During the operation of the process INmodule (110) in a first phase (1) in a first operational environment (A), operational data (DATA) that is related to the process module (110) is received by a computer data system (120). In a second phase (2), when the process module (110) is connected to a N second operational environment (B), operational data (DATA) is received again. The computer data system (120) has a reply function that receives and processes a query (Q.) and provides a response (R). Processing comprises to process the operational data (DATA) that was received during in the first and second phases. The process module (110) is then configured by using configuration parameters (150) that are derived from the response (R).Type: ApplicationFiled: November 16, 2015Publication date: November 15, 2018Inventors: Mario Hoernicke, Chaojun Xu, Axel Haller, Rainer Drath
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Publication number: 20180314222Abstract: A configuration system and method for process automation configured to access structural process diagrams representing process components. Each process component includes interconnections between process components. Each interconnection represents a physical connection. The system has at least one processor configured to generate corresponding process object instances for process components wherein a particular component type defines at least an interlock property and/or an operating condition.Type: ApplicationFiled: November 2, 2015Publication date: November 1, 2018Inventors: Mario Hoernicke, Chaojun Xu, Axel Haller, Rainer Drath, Ralf Jeske
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Publication number: 20180039261Abstract: A system for monitoring a modular process plant complex having a plurality of interconnected process modules each of which includes a plurality of interconnected physical control objects. The physical control objects and their interconnections inside a physical process module are displayed together with associated control parameters as stylized control objects on an operator display screen with four different zooming levels: a first zooming level displaying diagrams of aggregated key performance indicators of the plant complex; a second zooming level displaying diagrams of the key performance indicators; a third zooming level displaying process modules associated with a plant area of the second zooming level; and a fourth zooming level displaying one or more physical control objects included in a process module of the third zooming level together with the associated control parameters and interconnections as stylized control objects on the operator screen display.Type: ApplicationFiled: August 2, 2017Publication date: February 8, 2018Inventors: Axel Haller, Chaojun Xu, Mario Hoernicke, Rainer Drath, Ralf Jeske
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Publication number: 20110285284Abstract: The present invention relates to a light emitting device using AC, comprising: at least one LED chip and an AC driving circuit chip, wherein the AC driving circuit chip comprises a substrate and a rectifying circuit integrated on the substrate. The LED chip is flipped and bonded on the AC driving circuit chip by flip-chip technology and electrically connected to the rectifying circuit, and the AC driving circuit chip converts the AC into DC for supply to the LED chip. The present invention further relates to a method of manufacturing the light emitting device using AC, comprising the following steps of: (1) forming an LED chip; (2) integrating a rectifying circuit on a substrate, forming two power source connecting terminals on the substrate, and forming an AC driving circuit chip; and (3) flip-chip bonding the LED chip on the AC driving circuit chip and in electrical connection with the rectifying circuit on the substrate.Type: ApplicationFiled: October 25, 2010Publication date: November 24, 2011Applicant: APT Electronics Ltd.Inventors: Yugang Zhou, Zhaoming Zeng, Yin Hing Lai, Chi Wing Keung, Chaojun Xu, Ruizhen Wang, Guowei David Xiao