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    • 5. 发明申请
    • SYSTEM AND METHOD FOR LOCATING PHYSICAL ASSETS
    • 用于定位物理资产的系统和方法
    • WO2011101717A1
    • 2011-08-25
    • PCT/IB2011/000148
    • 2011-02-01
    • TRACKER ASIA LIMITEDLEWIS-EVANS, Jonathan, PhilipKEY, Alexander, John
    • LEWIS-EVANS, Jonathan, PhilipKEY, Alexander, John
    • G01S1/08B60R25/00H04W84/02
    • H04W64/00B60R25/1025B60R25/2072B60R2325/304G01S5/0072G01S19/16G01S19/21G01S19/48H04W4/02H04W8/22H04W84/02H04W84/12H04W88/06
    • A stolen asset locating and recovery system comprises: a first locating device (LD) associated with a first asset. The first LD has a first wireless communication unit comprising a public mobile radio network (PMRN) enabled communication unit for communicating over a PMRN such as a GSM/GPRS network with any of: an operations control centre; a second LD associated with a second asset; or a mobile location tracking system. The first LD has a second wireless communication unit. The second wireless communication unit uses a different wireless technology or protocol to that of the PMRN enabled communication unit. In the case where the second communication unit is a private radio frequency network (PRFN) operated by the asset location system service provider, the first LD is configured to use said second communication unit to communicate directly over said PRFN with the second LD in order to convey information such as a preprogrammed sequence of signals which assists locating and recovering said asset. In the event that the second communication unit is enabled for communication on a public radio network (PRN), the first LD is configured to communicate with any of the operations control centre, the second LD, or the mobile location tracking system on a PRN such as an IEEE802.11 enabled wireless local area network (WLAN) or an IEEE802.16 enabled wireless metropolitan area network when it is determined at the first LD that the communication cannot be transmitted between said first LD and any of the operations control centre, the second LD, or the mobile location tracking system using the PMRN.
    • 被盗资产定位和恢复系统包括:与第一资产相关联的第一定位设备(LD)。 第一LD具有第一无线通信单元,其包括通过PMRN(例如GSM / GPRS网络)通过以下任何一种通信的公共移动无线电网络(PMRN)使能通信单元:操作控制中心; 与第二资产相关联的第二LD; 或移动位置跟踪系统。 第一LD具有第二无线通信单元。 第二无线通信单元使用与启用PMRN的通信单元不同的无线技术或协议。 在第二通信单元是由资产定位系统服务提供商操作的专用射频网络(PRFN)的情况下,第一LD被配置为使用所述第二通信单元通过所述PRFN直接与第二LD进行通信,以便 传送信息,例如辅助定位和恢复所述资产的预编程信号序列。 在第二通信单元被允许在公共无线电网络(PRN)上进行通信的情况下,第一LD被配置为与PRN上的任何操作控制中心,第二LD或移动位置跟踪系统通信,例如 作为支持IEEE802.11的无线局域网(WLAN)或IEEE802.16的无线城域网,当在第一LD确定无法在所述第一LD和任何操作控制中心之间传送通信时, 第二LD或使用PMRN的移动位置跟踪系统。
    • 8. 发明申请
    • SUPERCONDUCTING SWITCH OPERATION
    • 超导开关操作
    • WO2009048877A2
    • 2009-04-16
    • PCT/US2008079092
    • 2008-10-07
    • VARIAN INCZHANG SHAOHAIMARSHALL ALEXANDER JOHNIOANNIDES A C
    • ZHANG SHAOHAIMARSHALL ALEXANDER JOHNIOANNIDES A C
    • H02H7/00
    • H02H7/001H01F6/02H01L39/16Y02E40/68Y10T307/76
    • A method of operating a superconducting switch system to protect against quenching in a superconducting magnet circuit is provided. The system comprises a magnet circuit, a main superconducting switch and an auxiliary superconducting switch connected in parallel thereto by low resistance connecting parts. In an initial magnet energisation procedure, after establishing superconducting flow in the circuit, the main and auxiliary switches are closed to cause current to persist in the circuit without further power input. If the main switch quenches, the current will transfer to the auxiliary switch through the resistive connecting parts. Upon restoring the main switch to the superconducting state, the voltage drop through the resistive connecting parts will drive the current back through the main switch. A preconditioning procedure is carried out as part of the magnet energisation procedure to ensure that opening the main switch will establish superconducting current through the auxiliary switch.
    • 提供了一种操作超导开关系统以防止在超导磁体电路中淬火的方法。 该系统包括磁电路,主超导开关和通过低电阻连接部分与其并联的辅助超导开关。 在初始磁体激励过程中,在电路中建立超导流动之后,主开关和辅助开关闭合,以使电流在电路中保持不变,而不需要进一步的电力输入。 如果主开关熄灭,电流将通过电阻连接部件传输到辅助开关。 在将主开关恢复到超导状态时,通过电阻连接部件的电压降将驱动电流回到主开关。 作为磁体激励程序的一部分执行预处理过程,以确保打开主开关将建立通过辅助开关的超导电流。