公开(公告)号：KR101304849B1

公开(公告)日：2013-09-05

申请号：KR1020120097604

申请日：2012-09-04

Applicant: 숭실대학교산학협력단 ,  한국전기연구원

Inventor： 신요안 ,  이원철 ,  장형민 ,  임이랑 ,  강지명 ,  이순우 ,  박영진 ,  김관호

IPC: G01S1/02 ,  G06K17/00

Abstract: PURPOSE: A wireless location measurement server using clock offset correction and a wireless location measurement method using the same are provided to minimize errors of a location estimate result by clock offset by measuring a relative clock frequency rate between beacons and compensating each beacon clock frequency. CONSTITUTION: Compensation pulse information including a clock count number of a first compensation pulse and a second compensation pulse is received from multiple beacons (200) which receive the first compensation pulse and the second compensation pulse from a step node. A relative clock frequency rate for clock offset compensation between the multiple beacons is calculated according to the beacon using a compensation pulse. The multiple beacons receive a location pulse from a tag of a location measurement target and receive location pulse information including the clock count number of the location pulse. A reception time point of the second compensation pulse in which the multiple beacons receive is synchronized with a same time point. Clock count information is calculated according to the beacon using the relative clock frequency rate corresponding to the synchronized time point. [Reference numerals] (1) Compensation pulse; (100) Compensation node; (3) Compensation pulse information packet; (300) Tag; (4) Location pulse; (400) Device (server); (5) Location pulse information packet

Abstract translation: 目的：提供使用时钟偏移校正的无线位置测量服务器和使用其的无线位置测量方法，以通过测量信标之间的相对时钟频率和补偿每个信标时钟频率来最小化由时钟偏移造成的位置估计结果的误差。 构成：从从步骤节点接收第一补偿脉冲和第二补偿脉冲的多个信标（200）接收包括第一补偿脉冲和第二补偿脉冲的时钟计数数的补偿脉冲信息。 使用补偿脉冲根据信标计算多个信标之间的时钟偏移补偿的相对时钟频率。 多个信标从位置测量目标的标签接收位置脉冲，并接收包括定位脉冲的时钟计数数的位置脉冲信息。 多个信标接收的第二补偿脉冲的接收时间点与相同的时间点同步。 使用对应于同步时间点的相对时钟频率，根据信标计算时钟计数信息。 （附图标记）（1）补偿脉冲; （100）补偿节点; （3）补偿脉冲信息包; （300）标签; （4）定位脉冲; （400）设备（服务器）; （5）定位脉冲信息包

公开(公告)号：KR101244936B1

公开(公告)日：2013-03-20

申请号：KR1020120026736

申请日：2012-03-15

Applicant: 숭실대학교산학협력단 ,  한국전기연구원

Inventor： 신요안 ,  이원철 ,  장형민 ,  임이랑 ,  강지명 ,  이순우 ,  박영진 ,  김관호

IPC: G01S1/02 ,  G01S5/02

Abstract: PURPOSE: A clock offset compensation method and an apparatus thereof are provided to minimize an error problem of a location estimation result due to clock offset by compensating a clock frequency of each beacon. CONSTITUTION: A compensation pulse information reception unit(410) receives compensation pulse information from beacons which receive a first compensation pulse and a second compensation pulse from a compensation node. The compensation pulse information includes a clock count number of the first compensation pulse and the second compensation pulse. A location pulse information reception unit(420) receives location pulse information from a plurality of beacons receiving a location pulse from a tag corresponding to a positioning target. A clock offset compensation unit(430) calculates a relative clock frequency ratio by beacon for clock offset compensation between beacons using the compensation pulse information. A clock count compensation unit(440) calculates compensated clock count information between a beacon and a tag by each beacon using the each clock count number and the each relative clock frequency ratio about the first compensation pulse, the second compensation pulse and the location pulse. [Reference numerals] (410) Compensation pulse information reception unit; (420) Location pulse information reception unit; (430) Clock offset compensation unit; (440) Clock count compensation unit

Abstract translation: 目的：提供时钟偏移补偿方法及其装置，以通过补偿每个信标的时钟频率来最小化由于时钟偏移引起的位置估计结果的误差问题。 构成：补偿脉冲信息接收单元（410）从补偿节点接收第一补偿脉冲和第二补偿脉冲的信标接收补偿脉冲信息。 补偿脉冲信息包括第一补偿脉冲和第二补偿脉冲的时钟计数。 位置脉冲信息接收单元（420）从与定位对象相对应的标签接收位置脉冲的多个信标中接收位置脉冲信息。 时钟偏移补偿单元（430）通过使用补偿脉冲信息的信标之间的时钟偏移补偿的信号来计算相对时钟频率比。 时钟计数补偿单元（440）使用每个时钟计数数和关于第一补偿脉冲，第二补偿脉冲和位置脉冲的每个相对时钟频率比，由每个信标计算信标和标签之间的补偿时钟计数信息。 （附图标记）（410）补偿脉冲信息接收单元; （420）位置脉冲信息接收单元; （430）时钟偏移补偿单元; （440）时钟计数补偿单元