Patents Assigned to International Technological University
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Patent number: 10321209Abstract: An improved data packet design that can be used in a variety of data communication standards used in smart meter systems is disclosed. In an embodiment a smart meter system that comprises of a local server, a coordinator and a plurality of smart meters in the many-to-one data communication system configuration. The smart meter uses a variety of types of radio frequency data packets. The data packets contain the commands, parameters, and data for system control and data transmission. The data packet designs are disclosed for a route discovery command, a get parameter command, a set parameter command, a get data command, a reset command, a relay command, a start command, and a calibration command that are used in the smart meter system.Type: GrantFiled: March 8, 2017Date of Patent: June 11, 2019Assignee: International Technological UniversityInventor: Karl L. Wang
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Publication number: 20190137539Abstract: Various embodiments of the invention allow for improving measurement accuracy of monitoring devices, for example, to accurately determine speed from motion data measured by an accelerometer. In certain embodiments, this is accomplished by applying a classification process that resembles a random forest classification to recorded sample data to detect similarities to features associated with data for a known speed type, classifying sample data into speed types, and finally averaging the speed types to obtain a high accuracy estimate value for a final speed.Type: ApplicationFiled: November 7, 2017Publication date: May 9, 2019Applicant: International Technological University Foundation, Inc.Inventors: Karl Lin WANG, Jingya XU
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Publication number: 20180372781Abstract: Described herein are systems and methods for low-power voltage sensor circuits and current sensor circuits using an optically coupled isolator. In various embodiments, opto-couplers replace bulky transformers that are used in common designs. In embodiments, an optically coupled isolator is used as a power gate to reduce power consumption. Further power savings may be obtained by selecting appropriate phototransistors and adjustable bias resistors to set the forward current of a photodiode as small as functionally possible to reduce battery discharge while providing sufficient gain for the optical transistor. In certain embodiments, the bias voltage point may be chosen to be at the turn-on voltage of the photodiode. In embodiments, power consumption of the voltage and current sensors may be adjusted by adjusting the frequency of a power-gating control signal, which may be controlled by a microcontroller.Type: ApplicationFiled: September 28, 2017Publication date: December 27, 2018Applicant: International Technological University Foundation, Inc.Inventor: Karl Lin WANG
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Patent number: 9612133Abstract: An improved data packet design that can be used in a variety of data communication standards used in smart meter systems is disclosed. In an embodiment a smart meter system that comprises of a local server, a coordinator and a plurality of smart meters in the many-to-one data communication system configuration. The smart meter uses a variety of types of radio frequency data packets. The data packets contain the commands, parameters, and data for system control and data transmission. The data packet designs are disclosed for a route discovery command, a get parameter command, a set parameter command, a get data command, a reset command, a relay command, a start command, and a calibration command that are used in the smart meter system.Type: GrantFiled: July 14, 2014Date of Patent: April 4, 2017Assignee: International Technological UniversityInventor: Karl L. Wang
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Patent number: 9383223Abstract: A smart meter system architecture comprises of a local server, a coordinator, and a plurality of smart meters in a one-to-many data communication system configuration is disclosed. The invention discloses the architecture for a coordinator-server interface control register, data registers, routing table, non-volatile memory, parameter register, non-interruptible battery backup subsystem, and a low-power energy calculation and calibration method for resistive loads.Type: GrantFiled: July 14, 2014Date of Patent: July 5, 2016Assignee: INTERNATIONAL TECHNOLOGICAL UNIVERSITYInventor: Karl L. Wang
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Patent number: 9377490Abstract: A transformer-less method and system for voltage and current sensing using voltage drops across resistors is disclosed. Using optically coupled isolators, the sensed voltages in the high voltage power lines are optically coupled and electrically isolated to the low voltage circuits. The circuit designs for voltage and current sensing's and electrical isolation are disclosed.Type: GrantFiled: January 22, 2015Date of Patent: June 28, 2016Assignee: INTERNATIONAL TECHNOLOGICAL UNIVERSITYInventor: Karl L. Wang
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Patent number: 9000753Abstract: A transformer-less method and system for voltage and current sensing using voltage drops across resistors is disclosed. Using optically coupled isolators, the sensed voltages in the high voltage power lines are optically coupled and electrically isolated to the low voltage circuits. The circuit designs for voltage and current sensing's and electrical isolation are disclosed.Type: GrantFiled: July 14, 2014Date of Patent: April 7, 2015Assignee: International Technological UniversityInventor: Karl L. Wang
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Publication number: 20130159940Abstract: A method of controlling an information board comprises the steps of sensing a gesture using a gesture capturing controller, determining a type of action having provided the gesture expression from the gesture capturing controller, where the type of command is one of a navigation request. Depending on the determined type of gesture, user interface elements of a spatial configuration are displayed.Type: ApplicationFiled: August 20, 2012Publication date: June 20, 2013Applicant: International Technological UniversityInventors: Mikel Duffy, Taiheng (Matthew) Jin, May Huang, Barbara Jill Hecker