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公开(公告)号：KR101337915B1
公开(公告)日：2013-12-05
申请号：KR1020120031127
申请日：2012-03-27
Applicant: 숭실대학교산학협력단
Abstract: 광 송신기의 발광 각도 변화 장치 및 방법이 개시된다. 개시된 광 송신기의 발광 각도 변화 장치는 복수의 광 송신기에서 각각 측정되는 광 수신기로부터 전송된 신호대 간섭비(Signal to Noise Ratio, 이하 SNR) 정보의 수신세기 및 상기 SNR 정보를 상기 복수의 광 송신기로부터 수신하는 수신부; 상기 SNR 정보가 미리 설정된 임계치 값 이상인지 판단하는 판단부; 및 상기 SNR 정보가 상기 임계치 값 미만인 경우 상기 수신세기를 이용하여 상기 복수의 광 송신기 중 적어도 하나의 광 송신기의 발광 각도를 변화시키는 제어부를 포함할 수 있다. 본 발명에 따르면, 광 송신기의 발광 각도를 변화시킬 수 있으며 광 송신기의 발광 각도의 변화를 통해 가시광 무선 통신 시스템의 성능을 향상시킬 수 있다.
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Patent Agency Ranking22.发明公开무선 필드버스 시스템을 구성하는 서버장치 및 이를 이용한 무선 필드버스 시스템에서의 데이터 통신 방법 有权无线现场总线系统中包含的服务器设备和使用服务器的无线现场总线系统中的数据通信方法
公开(公告)号：KR1020130063698A
公开(公告)日：2013-06-17
申请号：KR1020110130205
申请日：2011-12-07
Applicant: 숭실대학교산학협력단
CPC classification number: H04B7/2656 , H04W72/0446 , H04W72/1257
Abstract: PURPOSE: A server device and a data communication method of a wireless field bus system using the same are provided to adaptively set the number of data time slots. CONSTITUTION: A searching unit(121) searches for a plurality of nodes executing data communication with a server device. A setting unit(122) sets the number of data time slots for transmitting data within a communication frame used in data communication of the nodes based on the number of the searched nodes. The searching unit searches for the nodes according to the set period. The setting unit repetitively sets the number of the data time slots according to the set period. [Reference numerals] (120) Server device; (121) Searching unit; (122) Setting unit; (123) Communication unit
Abstract translation: 目的：提供使用其的无线现场总线系统的服务器设备和数据通信方法，以自适应地设置数据时隙的数量。 构成：搜索单元（121）搜索与服务器设备执行数据通信的多个节点。 设置单元（122）基于搜索到的节点的数量，设置用于在节点的数据通信中使用的通信帧内发送数据的数据时隙的数量。 搜索单元根据设定的周期搜索节点。 设置单元根据设定的周期重复设定数据时隙的数量。 （附图标记）（120）服务器装置; （121）搜索单位; （122）设定单位; （123）通讯单元
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公开(公告)号：KR1020130059695A
公开(公告)日：2013-06-07
申请号：KR1020110125808
申请日：2011-11-29
Applicant: 숭실대학교산학협력단
CPC classification number: H04W4/02 , G01S3/46 , H04B10/502
Abstract: PURPOSE: A portable terminal, a positioning server, and a positioning method of a portable terminal using the same are provided to accurately measure the location of the portable terminal according to a TDoA(Time Difference of Arrival) method using a visible ray signal. CONSTITUTION: A control unit(221) controls the transmission of visible signals in a plurality of transmission devices. A location calculation unit(222) calculates the location of the portable terminal based on the time information of which a portable terminal receives a visible ray signal from each of the transmission devices. The control unit controls a plurality of transmission devices in order not to overlap the transmission time of the transmission devices. [Reference numerals] (210) Visible ray transceiving device; (211) Visible ray transmission unit; (212) Visible ray reception unit; (220) Positioning server; (221) Control unit; (222) Location calculation unit; (223) Communication unit; (224) Control message generation unit; (230) Mobile terminal; (231) Reception unit; (232) Time measurement unit; (233) Transceiving unit
Abstract translation: 目的：提供便携式终端，定位服务器和使用其的便携式终端的定位方法，以使用可见光线信号根据TDoA（到达时差）方法来精确地测量便携式终端的位置。 构成：控制单元（221）控制多个发送装置中的可视信号的发送。 位置计算单元（222）基于便携式终端从每个发送装置接收到可见光信号的时间信息来计算便携式终端的位置。 控制单元控制多个发送装置，以便不与发送装置的发送时间重叠。 （附图标记）（210）可见光收发装置; （211）可见光传输单元; （212）可见光线接收单元; （220）定位服务器; （221）控制单元; （222）位置计算单位; （223）通讯单元; （224）控制消息生成单元; （230）移动终端; （231）接待单位; （232）时间测量单位; （233）收发单位
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公开(公告)号：KR1020120119055A
公开(公告)日：2012-10-30
申请号：KR1020110036792
申请日：2011-04-20
Applicant: 숭실대학교산학협력단
Abstract: PURPOSE: A location and reception angle estimation apparatus of a light receiver and method thereof are provided to estimate the location and reception angle of a light receiver by measuring light emitted from a visible light emission apparatus. CONSTITUTION: A candidate position computation unit(505) computes candidate locations of a light receiver using one of the measured reception strengths. An analysis unit(507) predicts the reception strengths of visible light according to the first reception angle variation of the light receiver in the candidate locations. The analysis unit analyzes the first variation estimation of the predicted reception strengths. An estimation unit(509) measures a second reception angle and the location of the light receiver using the second variation estimation of the measured reception strengths and the first variation estimation of the candidate locations. [Reference numerals] (102) Light receiver; (501) Estimated information request unit; (503) Reception strength reception unit; (505) Candidate location calculation unit; (507) Analysis unit; (509) Estimation unit; (510) Estimation reception angle transmission unit; (511) Linear distance calculation unit; (513) Candidate location coordinate calculation unit; (515) Direction recognition unit; (521) Reception strength prediction unit; (523) Trend curve creation unit; (531) Trend curve selection unit; (533) Light receiver location estimation unit; (535) Light receiver reception angle estimation unit; (AA) Light receiver location/ reception angle estimation apparatus
Abstract translation: 目的：提供一种光接收器的位置和接收角度估计装置及其方法，用于通过测量从可见光发射装置发出的光来估计光接收器的位置和接收角度。 构成：候选位置计算单元（505）使用所测量的接收强度之一来计算光接收器的候选位置。 分析单元（507）根据候选位置中的光接收器的第一接收角度变化来预测可见光的接收强度。 分析单元分析预测的接收强度的第一变化估计。 估计单元（509）使用测量的接收强度的第二变化估计和候选位置的第一变化估计来测量第二接收角度和光接收机的位置。 （附图标记）（102）光接收器; （501）估计信息请求单元; （503）接收强度接收单元; （505）候选位置计算单位; （507）分析单位; （509）估计单位; （510）估计接收角传输单元; （511）线性距离计算单元; （513）候选位置坐标计算单位; （515）方向识别单元; （521）接收强度预测单元; （523）趋势曲线创建单元; （531）趋势曲线选择单位; （533）光接收机位置估计单元; （535）光接收机接收角度估计单元; （AA）光接收器位置/接收角度估计装置
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公开(公告)号：KR1020120049006A
公开(公告)日：2012-05-16
申请号：KR1020100110550
申请日：2010-11-08
Applicant: (주) 엠엠씨 테크놀로지 , 숭실대학교산학협력단
CPC classification number: H04L41/06 , H04B10/0773
Abstract: PURPOSE: An automatic manufacturing system error detection and automatic report system is provided to secure safety of a product through an automatic manufacturing system through an error sensing system construction. CONSTITUTION: A VLC(Visible Light Communications) transceiving modem transceives data through VLC wireless communication. A server collects data which is transmitted from a machine control unit. The server supplies the collected data to a central management and monitoring system. A lighting control sensor is attached inside an indoor lighting device. The lighting control sensor changes the color of the light.
Abstract translation: 目的：提供自动制造系统错误检测和自动报告系统，通过自动制造系统通过误差传感系统结构确保产品的安全。 构成：VLC（可见光通信）收发调制解调器通过VLC无线通信收发数据。 服务器收集从机器控制单元发送的数据。 服务器将收集的数据提供给中央管理和监控系统。 照明控制传感器安装在室内照明装置的内部。 照明控制传感器改变光的颜色。
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公开(公告)号：KR1020110032930A
公开(公告)日：2011-03-30
申请号：KR1020090090695
申请日：2009-09-24
Applicant: (주) 엠엠씨 테크놀로지 , 숭실대학교산학협력단
Abstract: PURPOSE: A multi-hop collection based routing method in order to supply stable routing in the ad-hoc wireless network without increasing network overhead is provided to collect resource information in a multi-hop relay method by including resource information within a hello message field. CONSTITUTION: Each node collects multi hop resources while broadcasting a hello message to a neighbor node(S10). Each node calculates quantified path stability value through a signal strength arithmetic mean value and a signal strength variation based on the signal strength of a collected Hello message(S20). Each node searches for the most stabilized routing path to a reception node through internal and external path search processes of an area(S30).
Abstract translation: 目的：提供一种基于多跳收集的路由方法，以便在不增加网络开销的情况下在ad-hoc无线网络中提供稳定的路由，通过在hello消息字段内包含资源信息，在多跳中继方法中收集资源信息。 构成：每个节点在向邻居节点广播一个hello消息时收集多跳资源（S10）。 每个节点通过信号强度算术平均值和基于所收集的Hello消息的信号强度的信号强度变化来计算量化路径稳定性值（S20）。 每个节点通过区域的内部和外部路径搜索过程搜索到接收节点的最稳定的路由路径（S30）。
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