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    • 3. 发明授权
    • Sensor-Net system and sensor node
    • 传感器网络系统和传感器节点
    • US08438249B2
    • 2013-05-07
    • US12068704
    • 2008-02-11
    • Takehiro UranoKeiro MuroToshiyuki OdakaMinoru OgushiYoshihiro Wakisaka
    • Takehiro UranoKeiro MuroToshiyuki OdakaMinoru OgushiYoshihiro Wakisaka
    • H06F15/16
    • G06F1/14H04J3/0638H04W74/06H04W88/08H04W88/16
    • A sensor-Net system includes sensor nodes which are in intermittent operation so as to save power by repeating activated state and inactivated state at a regular interval. Synchronization of time in the system is executed by aligning to the intermittent operation of the sensor nodes. A management server issues a setTime command for configuring the time to each gateway node at a specified interval. Each router node sets or corrects the time of it based on the time received from the gateway node and thereafter turns ON the time configuration flag for each sensor node in order to expand the setTime command to all of its sibling sensor nodes. The router node, upon reception of a polling, which is a command request, from the sensor node, obtains the time at that time, then uses the time to generate a setTime command to transmit to that sensor node.
    • 传感器网络系统包括间歇操作的传感器节点,以通过以规则间隔重复激活状态和非激活状态来节省功率。 通过对准传感器节点的间歇操作来执行系统中的时间同步。 管理服务器发出setTime命令,用于以指定的间隔配置每个网关节点的时间。 每个路由器节点基于从网关节点收到的时间来设置或更正它的时间,然后将每个传感器节点的时间配置标志置ON,以便将setTime命令扩展到其所有同级传感器节点。 路由器节点在接收到来自传感器节点的命令请求的轮询之后,获得该时刻的时间,然后使用时间来生成setTime命令以发送给该传感器节点。
    • 4. 发明申请
    • Sensor-net system and sensor node
    • 传感器网络系统和传感器节点
    • US20080307075A1
    • 2008-12-11
    • US12068704
    • 2008-02-11
    • Takehiro UranoKeiro MuroToshiyuki OdakaMinoru OgushiYoshihiro Wakisaka
    • Takehiro UranoKeiro MuroToshiyuki OdakaMinoru OgushiYoshihiro Wakisaka
    • G06F15/177
    • G06F1/14H04J3/0638H04W74/06H04W88/08H04W88/16
    • A sensor-Net system includes sensor nodes which are in intermittent operation so as to save power by repeating activated state and inactivated state at a regular interval. Synchronization of time in the system is executed by aligning to the intermittent operation of the sensor nodes. A management server issues a setTime command for configuring the time to each gateway node at a specified interval. Each router node sets or corrects the time of it based on the time received from the gateway node and thereafter turns ON the time configuration flag for each sensor node in order to expand the setTime command to all of its sibling sensor nodes. The router node, upon reception of a polling, which is a command request, from the sensor node, obtains the time at that time, then uses the time to generate a setTime command to transmit to that sensor node.
    • 传感器网络系统包括间歇操作的传感器节点,以通过以规则间隔重复激活状态和非激活状态来节省功率。 通过对准传感器节点的间歇操作来执行系统中的时间同步。 管理服务器发出setTime命令,用于以指定的间隔配置每个网关节点的时间。 每个路由器节点基于从网关节点收到的时间来设置或更正它的时间,然后将每个传感器节点的时间配置标志置ON,以便将setTime命令扩展到其所有同级传感器节点。 路由器节点在接收到来自传感器节点的命令请求的轮询之后,获得该时刻的时间,然后使用时间来生成setTime命令以发送给该传感器节点。