公开(公告)号：US20090103437A1

公开(公告)日：2009-04-23

申请号：US12149255

申请日：2008-04-29

申请人： Se Han Kim ,  Kyeseon Lee ,  Chong-Ho Yoon ,  Gang-Ho Byun ,  Nae-Soo Kim ,  Cheol Sig Pyo

发明人： Se Han Kim ,  Kyeseon Lee ,  Chong-Ho Yoon ,  Gang-Ho Byun ,  Nae-Soo Kim ,  Cheol Sig Pyo

IPC分类号： G01R31/08

CPC分类号： H04W74/0808 ,  H04L7/041 ,  H04W52/0216 ,  H04W74/002 ,  Y02D70/166

摘要： Provided is a method of transmitting/receiving data in a sensor node for reducing overhearing of sensor nodes, and a sensor network which implements the method. A sender node having transmission data from among a plurality of nodes which perform a low power listening (LPL) operation in an asynchronous manner at predetermined time intervals, generates a long preamble including short preambles, each having information including a destination address of the transmission data, a remainder of the long preamble, and a length of the transmission data, and sequentially transmits the second preamble and the transmission data. A receiver node from among the plurality of nodes determines whether a valid signal is sensed during an active state in the LPL operation. If it is determined that the valid signal is sensed, the receiver node receives the short preamble transmitted from the sender node. The receiver node determines a duration time of a deactivated state of the receiver node based on the received first preamble, thereby reducing overhearing in the sensor network.

摘要翻译： 提供了一种在传感器节点中发送/接收数据以减少传感器节点的窃听的方法，以及实现该方法的传感器网络。 具有以预定时间间隔以异步方式执行低功率监听（LPL）操作的多个节点的发送数据的发送方节点生成包括短前导码的长前导码，每个具有包含发送数据的目的地地址的信息 ，长前导码的剩余部分和发送数据的长度，并顺序发送第二前同步码和发送数据。 多个节点中的接收器节点确定在LPL操作中的活动状态期间是否感测到有效信号。 如果确定感测到有效信号，则接收器节点接收从发送器节点发送的短前置码。 接收机节点基于接收到的第一前导码来确定接收机节点的去激活状态的持续时间，从而减少传感器网络中的窃听。

公开(公告)号：US20080136708A1

公开(公告)日：2008-06-12

申请号：US11932968

申请日：2007-10-31

申请人： Se Han Kim ,  Ji Eun Kim ,  Nae Soo Kim ,  Cheol Sig Pyo

发明人： Se Han Kim ,  Ji Eun Kim ,  Nae Soo Kim ,  Cheol Sig Pyo

IPC分类号： H04B7/00 ,  H04L12/56

CPC分类号： H04W52/16 ,  H04W52/325 ,  H04W74/08 ,  H04W84/18

摘要： A Ubiquitous Sensor Network (USN) system using multi-channel having differential radio power and a method of configuring the USN system are provided. The USN system and the method include a sink node performing a communication with a sensor node using at least one or more frequency signal having differential outputs; and a sensor node performing the communication with the sink node using the at least one or more frequency signal. The USN system and the method simultaneously use a control frequency signal having a high output power and a data frequency signal having an output power lower than that of the control frequency signal, thereby reducing a beacon transmission delay, enabling time synchronization between the sensor nodes, and preventing collisions between beacons due to beacon relays among the sensor nodes, so as to configure a more efficient sensor field.

摘要翻译： 提供了使用具有差分无线电功率的多信道的无处不在的传感器网络（USN）系统和配置USN系统的方法。 USN系统和方法包括使用具有差分输出的至少一个或多个频率信号执行与传感器节点的通信的汇聚节点; 以及传感器节点，使用所述至少一个或多个频率信号来执行与所述汇聚节点的通信。 USN系统和该方法同时使用具有高输出功率的控制频率信号和具有低于控制频率信号的输出功率的输出功率的数据频率信号，从而减少信标传输延迟，从而实现传感器节点之间的时间同步， 并且防止由于传感器节点之间的信标中继引起的信标之间的冲突，以便配置更有效的传感器场。

公开(公告)号：US20070103298A1

公开(公告)日：2007-05-10

申请号：US11595456

申请日：2006-11-09

申请人： Se-Han Kim ,  Yoon-Mee Doh ,  Cheol-Sig Pyo

发明人： Se-Han Kim ,  Yoon-Mee Doh ,  Cheol-Sig Pyo

IPC分类号： G08B1/08

CPC分类号： G08B25/009 ,  G08B25/10 ,  G08B27/005

摘要： Provided is a distributional alert system using a ubiquitous sensor network (USN). When a disaster occurs, the distributional alert system detects it in a sensor node, informs the area where the disaster occurs of danger through an actuator, such as siren, or informs a management system of the danger through a wired/wireless network. The distributional alert system includes: a first sensor node for generating sense data by sensing surroundings with a sensor therein, determining whether a disaster occurs by analyzing the sense data, and creating and transmitting emergency data based on the determination result, while forming a sensor network; and an alerting node for receiving emergency data from the first sensor node on the sensor network, and outputting disaster circumstantial information to a sensor field of the sensor network upon receipt of the emergency data.

摘要翻译： 提供了使用普遍存在的传感器网络（USN）的分布式警报系统。 当发生灾难时，分布式警报系统会在传感器节点中检测到故障，通过执行器（如警笛）告知灾害发生的危险区域，或通过有线/无线网络通知管理系统危险。 所述分配警报系统包括：第一传感器节点，用于通过在其中传感器感测环境来产生感测数据;通过分析感测数据来确定是否发生灾难;以及在形成传感器网络的同时，基于确定结果创建并发送紧急数据 ; 以及用于从所述传感器网络上的所述第一传感器节点接收紧急数据的报警节点，并且在接收到所述紧急数据时将所述灾害环境信息输出到所述传感器网络的传感器场。