Patents by Inventor Young Hwan Ham
Young Hwan Ham 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: 11747835Abstract: The present invention relates to a self-powered remote control system for a smart valve, the system comprising: a smart valve for regulating the flow of a fluid in a pipe; a sensing module for sensing the flow rate, pressure, and temperature of the fluid in the pipe; a power generation module for generating power according to the flow of the fluid; a control module for controlling the lifting or lowering of the opening/closing plate of the smart valve according to the flow rate, pressure, or temperature state sensed by the sensing module; and an administrator terminal for transmitting and receiving control signals to and from the control module, wherein the power generation module comprises: a conical fluid guide member provided in a direction in which the fluid is supplied; and a rotating member rotated by the fluid guided through the fluid guide member, whereby the operation of the smart valve can be controlled by manipulating the administrator terminal at a remote location, so as to supply the fluid into tType: GrantFiled: December 3, 2019Date of Patent: September 5, 2023Assignee: DONGHAE ECO ENERGY LTD.Inventor: Young Hwan Ham
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Publication number: 20220317709Abstract: The present invention relates to a self-powered remote control system for a smart valve, the system comprising: a smart valve for regulating the flow of a fluid in a pipe; a sensing module for sensing the flow rate, pressure, and temperature of the fluid in the pipe; a power generation module for generating power according to the flow of the fluid; a control module for controlling the lifting or lowering of the opening/closing plate of the smart valve according to the flow rate, pressure, or temperature state sensed by the sensing module; and an administrator terminal for transmitting and receiving control signals to and from the control module, wherein the power generation module comprises: a conical fluid guide member provided in a direction in which the fluid is supplied; and a rotating member rotated by the fluid guided through the fluid guide member, whereby the operation of the smart valve can be controlled by manipulating the administrator terminal at a remote location, so as to supply the fluid into tType: ApplicationFiled: December 3, 2019Publication date: October 6, 2022Inventor: Young Hwan HAM
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Patent number: 8364457Abstract: Provided are a simulation apparatus and method used to simulate a sensor network. A sensor node of a real node is reflected in a simulation, and bidirectional communication is performed between a real node and a virtual node, in order to reflect a real environment and a simulation environment in each other and make the real node and the virtual node consistent with each other, thereby performing simulation.Type: GrantFiled: February 5, 2009Date of Patent: January 29, 2013Assignee: Electronics and Telecommunications Research InstituteInventors: Young Bag Moon, Sang Joon Park, Young Hwan Ham
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Publication number: 20120191428Abstract: An apparatus and method are provided, which predict total nitrogen using general water quality data measured in real time. The total nitrogen prediction apparatus may include a regression model selection unit to select a regression model comprising general data of at least one water quality based on a correlation coefficient of the general data of at least one water quality, a quality-of-fit evaluation unit to evaluate quality of fit of the selected regression model, a regression model change unit to determine whether to change the regression model based on the quality of fit and change the regression model according to the determination result, and a total nitrogen prediction unit to predict total nitrogen of a body of water based on the regression model.Type: ApplicationFiled: January 23, 2012Publication date: July 26, 2012Applicants: KOREA ENVIRONMENT CORPORATION, Electronics and Telecommunications Research InstituteInventors: Chang Won LEE, Gwan Joong Kim, Nae Soo Kim, Pil Gyu Choi, Gun Bum Song, Hoon Jeong, Young Hwan Ham
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Patent number: 8223784Abstract: A network having a hierarchical structure includes a plurality of clusters. Each of the clusters includes a plurality of nodes and a cluster head connected to the nodes in a mesh format. Each of the nodes is connected to other clusters via the cluster head.Type: GrantFiled: October 23, 2008Date of Patent: July 17, 2012Assignees: Electronics and Telecommunications Research Institute, Fumate Co., LtdInventors: Hyeon Park, Young Hwan Ham, Sang Joon Park, Jeong Man Woo
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Publication number: 20120179373Abstract: Provided are a method and a system for measuring total phosphorus that may predict total phosphorus of a river valley using multi-parameter water quality that are measured in real time through a multi-parameter water quality measuring unit and the like, and may increase the accuracy thereof. The total phosphorus measuring method according to the present disclosure includes: computing a correlation between the multi-parameter water quality and the total phosphorus using multi-parameter water quality data and total phosphorus data measured for a predetermined period; selecting upper parameters having a high correlation from among the multi-parameter water quality based on the computation result; generating a total phosphorus prediction model through a regression analysis between the upper parameters and the total phosphorus; measuring the multi-parameter water quality; and predicting the total phosphorus by replacing the total phosphorus prediction model with the measured multi-parameter water quality.Type: ApplicationFiled: January 11, 2012Publication date: July 12, 2012Applicants: University of Seoul Industry Cooperation Foundation, Electronics and Telecommunications Research InstituteInventors: Chang Won LEE, Gwan Joong KIM, Nae Soo KIM, Hoon JEONG, Young Hwan HAM, Hyun Ook KIM
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Patent number: 8121080Abstract: Provided are a beacon scheduling system and method for preventing beacon overlapping in a ZigBee network including routers each with a beacon slot number according to a specific time slot. The system includes: a first router periodically transmitting beacons at a beacon interval according to a specific time slot; and a second router finding the beacon interval by scanning the beacons transmitted by the first router and transmitting beacons within the beacon interval in consideration of a superframe period for transmitting data. When a router in a sensor network operates, the router can efficiently select the beacon transmission time, and a sink node manages beacon overlapping between all the routers. Therefore, stable, low-energy consumption, and excellent performance sensor networking environments can be established in a beacon mode.Type: GrantFiled: November 29, 2007Date of Patent: February 21, 2012Assignee: Electronics and Telecommunications Research InstituteInventors: Young-Hwan Ham, Sun-Joong Kim, Cheol-Sig Pyo
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Publication number: 20110176521Abstract: Provided is an apparatus and method of transmitting a packet of a node in a wireless sensor network. The apparatus includes a plurality of priority queues, wherein packets to be transmitted to neighboring nodes are stored in each of the priority queues according to transmission priority, and the packets are transmitted according to the priority of each priority queue. Accordingly, a delay of a packet that requires real-time transmission is minimized by using priority queues in a node.Type: ApplicationFiled: May 12, 2009Publication date: July 21, 2011Inventors: Hyeon Park, Young-Hwan Ham, Sang-Joon Park
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Publication number: 20100054234Abstract: Provided are a simulation apparatus and method used to simulate a sensor network. A sensor node of a real node is reflected in a simulation, and bidirectional communication is performed between a real node and a virtual node, in order to reflect a real environment and a simulation environment in each other and make the real node and the virtual node consistent with each other, thereby performing simulation.Type: ApplicationFiled: February 5, 2009Publication date: March 4, 2010Applicant: Electronics and Telecommunications Research InstituteInventors: Young Bag Moon, Sang Joon Park, Young Hwan Ham
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Patent number: 7640585Abstract: An intrusion detection system and method of a wireless network providing wireless communication to one or more wireless terminal, and an intrusion detection sensor capable of detecting attacks against wireless network are provided. The intrusion detection system of a wireless network includes: an access point providing wireless communication to a wireless terminal; and an intrusion detection sensor examining packets transmitted and received between the access point and a wireless terminal according to a predetermined detection rule. The access point transmits confirmation information on whether or not an event packet, including critical information on whether or not a wireless line connection between the access point and the wireless terminal is established, is transmitted, to the intrusion detection sensor, and the intrusion detection sensor examines an event packet by using the confirmation information.Type: GrantFiled: November 29, 2005Date of Patent: December 29, 2009Assignee: Electronics and Telecommunications Research InstituteInventors: Sok Joon Lee, Kyung Hee Oh, Sin Hyo Kim, Young Hwan Ham, Byung Ho Chung, Kyo Il Chung
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Publication number: 20090154482Abstract: Provided is a routing method capable of expanding a conventional tree routing to perform the efficient and safe key management in a sensor network environment that requires the symmetric key based key management. Each sensor node transmits a Route Reverse message to a sink node to set a reverse tree routing path. Therefore, it is possible to provide efficient and safe key management mechanism and communication environment by providing a bidirectional communication between a sink node and sensor nodes through an expanded tree routing such that a user is provided with a safe sensor network.Type: ApplicationFiled: December 16, 2008Publication date: June 18, 2009Inventors: Young Hwan Ham, Hyeon Park, Sang Joon Park, Cheol Sig Pyo
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Publication number: 20090154395Abstract: A network having a hierarchical structure includes a plurality of clusters. Each of the clusters includes a plurality of nodes and a cluster head connected to the nodes in a mesh format. Each of the nodes is connected to other clusters via the cluster head.Type: ApplicationFiled: October 23, 2008Publication date: June 18, 2009Applicants: Electronics and Telecommunications Research Institute, FUMATE CO., LTDInventors: Hyeon PARK, Young Hwan HAM, Sang Joon PARK, Jeong Man WOO
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Publication number: 20080137599Abstract: Provided are a beacon scheduling system and method for preventing beacon overlapping in a ZigBee network including routers each with a beacon slot number according to a specific time slot. The system includes: a first router periodically transmitting beacons at a beacon interval according to a specific time slot; and a second router finding the beacon interval by scanning the beacons transmitted by the first router and transmitting beacons within the beacon interval in consideration of a superframe period for transmitting data. When a router in a sensor network operates, the router can efficiently select the beacon transmission time, and a sink node manages beacon overlapping between all the routers. Therefore, stable, low-energy consumption, and excellent performance sensor networking environments can be established in a beacon mode.Type: ApplicationFiled: November 29, 2007Publication date: June 12, 2008Applicant: Electronics and Telecommunications Research InstituteInventors: Young Hwan HAM, Sun Joong Kim, Cheol Sig Pyo