Current transformers for partial discharge detection on aircraft cables and wires
    2.
    发明申请
    Current transformers for partial discharge detection on aircraft cables and wires 失效
    用于飞机电缆和电线局部放电检测的电流互感器

    公开(公告)号:US20050134290A1

    公开(公告)日:2005-06-23

    申请号:US10745141

    申请日:2003-12-23

    摘要: A systems and methods are provided for detecting defects in aircraft wiring, and more particularly, for detecting partial discharges or arcing in wiring or cables. A high frequency current transformer (HFCT) is fixingly positioned in contact with a wire so that the wire is encircled by the HFCT. Partial discharges from a damaged wire so encircled will induce a current in the HFCT proportional to the current of the discharge. The HFCT comprises at least one conductive coil-like pattern formed onto a flexible insulating material, said insulating material having slits between each coil-turn of the coil-like pattern; and a core of flexible material fitted between the coil-turns through said slits.

    摘要翻译: 提供了用于检测飞机布线中的缺陷的系统和方法,更具体地,用于检测布线或电缆中的局部放电或电弧。 高频电流互感器(HFCT)固定地定位成与电线接触,使得电线被HFCT包围。 如此包围的受损电线部分放电将导致HFCT中的电流与放电电流成比例。 HFCT包括形成在柔性绝缘材料上的至少一个导电线圈状图案,所述绝缘材料在线圈状图案的每个线圈匝之间具有狭缝; 以及通过所述狭缝安装在线圈匝之间的柔性材料的芯。

    LOW CURRENT AC PARTIAL DISCHARGE DIAGNOSTIC SYSTEM FOR WIRING DIAGNOSTICS
    3.
    发明申请
    LOW CURRENT AC PARTIAL DISCHARGE DIAGNOSTIC SYSTEM FOR WIRING DIAGNOSTICS 有权
    用于接线诊断的低电流交流部分放电诊断系统

    公开(公告)号:US20060038573A1

    公开(公告)日:2006-02-23

    申请号:US10838474

    申请日:2004-05-04

    IPC分类号: G01R31/12 G01R31/08

    CPC分类号: G01R31/1272 G01R31/021

    摘要: A system and method for detecting partial discharges or arcing in wiring or cables is disclosed. The system employs a high-voltage AC power source to generate a high-voltage, low-current AC waveform, which is propagated through a selected wire, which in turn, produces the return signal. The return signal is processed using a signal processor and the analyzed for indications of the occurrence of a partial discharge. The method detects damage to a selected wire by utilizing high voltage, low current AC waveforms to induce partial discharges in a controlled manner and detecting a return signal resulting from the discharge.

    摘要翻译: 公开了一种用于检测布线或电缆中的局部放电或电弧的系统和方法。 该系统采用高压交流电源产生高电压,低电流交流波形,该波形通过所选择的导线传播,从而产生返回信号。 使用信号处理器处理返回信号,并分析了局部放电发生的指示。 该方法通过利用高电压,低电流AC波形来检测对所选导线的损坏,以受控方式诱发部分放电并检测由放电产生的返回信号。

    Detection of partial discharge or arcing in wiring via fiber optics
    4.
    发明申请
    Detection of partial discharge or arcing in wiring via fiber optics 失效
    通过光纤检测布线中的局部放电或电弧

    公开(公告)号:US20050134837A1

    公开(公告)日:2005-06-23

    申请号:US10745245

    申请日:2003-12-23

    摘要: A cable, system and method for detecting partial discharges or arcing in wiring or cables via fiber optics are provided. The cable for detecting partial discharges includes a conductor for carrying electrical signals; at least one fluorescent optical fiber for detecting light generated by a partial discharge; and a first transparent layer surrounding the conductor for supporting the at least one fluorescent optical fiber generally parallel to the conductor. By employing a fluorescent optical fiber, incident light generated by a partial discharge along a length of the optical fiber will be transmitted via the optical fiber to an optical receiver for determining a partial discharge has occurred.

    摘要翻译: 提供了一种用于通过光纤检测布线或电缆中的局部放电或电弧的电缆,系统和方法。 用于检测局部放电的电缆包括用于承载电信号的导体; 用于检测由局部放电产生的光的至少一个荧光光纤; 以及围绕所述导体的第一透明层,用于支撑所述至少一个与导体平行的荧光光纤。 通过使用荧光光纤,沿着光纤长度的局部放电产生的入射光将经由光纤传输到用于确定局部放电的光接收器。

    Homoepitaxial gallium nitride based photodetector and method of producing
    5.
    发明申请
    Homoepitaxial gallium nitride based photodetector and method of producing 有权
    同质外延氮化镓基光电探测器及其制造方法

    公开(公告)号:US20050029537A1

    公开(公告)日:2005-02-10

    申请号:US10932127

    申请日:2004-09-01

    摘要: A photodetector (100, 200, 300) comprising a gallium nitride substrate, at least one active layer (104, 302) disposed on the substrate (102, 202, 306), and a conductive contact structure (106, 210, 308) affixed to the active layer (104, 302) and, in some embodiments, the substrate (102, 202, 306). The invention includes photodetectors (100, 200, 300) having metal-semiconductor-metal structures, P-i-N structures, and Schottky-barrier structures. The active layers (104, 302) may comprise Ga1-x-yAlxInyN1-z-w PzAsw, or, preferably, Ga1-xAlxN. The gallium nitride substrate comprises a single crystal gallium nitride wafer and has a dislocation density of less than about 105 cm−2. A method of making the photodetector (100, 200, 300) is also disclosed.

    摘要翻译: 包括氮化镓衬底,设置在衬底(102,202,306)上的至少一个有源层(104,302)的光电探测器(100,200,300)和固定在衬底上的导电接触结构(106,210,308) 到有源层(104,302),并且在一些实施例中为衬底(102,202,306)。 本发明包括具有金属 - 半导体 - 金属结构,P-i-N结构和肖特基势垒结构的光电探测器(100,200,300)。 有源层(104,302)可以包括Ga1-x-yAlxInyN1-z-wPzAsw,或者优选地,Ga1-xAlxN。 氮化镓衬底包括单晶氮化镓晶片,并且具有小于约10 -5 cm -2的位错密度。 还公开了制造光电检测器(100,200,300)的方法。