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    • 9. 发明申请
    • SNAP CONNECTING INNER MODULES FOR AN ELECTRIC UTILITY METER
    • SNAP连接电力实用程序的内部模块
    • WO0237125A9
    • 2003-04-24
    • PCT/US0148501
    • 2001-10-30
    • SCHLUMBERGER RESOURCE MAN SERV
    • BALLARD HENRY
    • G01R11/04G01R1/04G01R1/00
    • G01R22/065
    • Improved electric utility meter with an integrated structure (50) uses a minimum number of parts without requiring the use of screws, clips or other additional parts that make meter disassembly a tedious procedure. Meter casing includes a baseplate (64), at least two inner covers (52, 54) for housing and protecting electronic components of electric utility meter, an outer cover (62), and pluralities of projections extending from the covers for interconnection of casing components and stabilization of the integrated casing structure. The various electronic components of the meter includes electronic circuit boards (56) and current transformers (60). Casing module is secured and stabilized by interconnecting the outer cover (62) with other inner covers (52, 54), thus safeguarding against possible snap deflection. The additional use of cantilever springs and containment ribs (66) helps to ensure that the inner casing components will not move within the overall casing structure.
    • 具有集成结构(50)的改进型电力仪表使用最少数量的部件,而不需要使用螺丝,夹子或其他附加部件,使电表拆卸成为一个繁琐的过程。 仪表外壳包括底板(64),至少两个内盖(52,54),用于容纳和保护电力仪表的电子部件,外盖(62)和从盖子延伸的多个凸起,用于壳体部件 并整合了套管结构。 仪表的各种电子部件包括电子电路板(56)和电流互感器(60)。 通过将外盖(62)与其它内盖(52,54)相互连接来固定和稳定套管模块,从而防止可能的卡扣偏转。 额外使用悬臂弹簧和密封肋(66)有助于确保内壳部件不会在整个套管结构内移动。
    • 10. 发明申请
    • ARRANGEMENT FOR DETECTING THE CURRENT BY MEANS OF A PRECISION RESISTOR OF A LOAD CURRENT CIRCUIT
    • 安排用于检测流经测量电阻负载电路
    • WO00052482A2
    • 2000-09-08
    • PCT/DE2000/000532
    • 2000-02-25
    • G01R19/165G01R1/00
    • G01R19/16571
    • The invention relates to an arrangement for detecting the current by means of a precision resistor of a load current circuit. Said arrangement comprises an operational amplifier. The voltage drop at the precision resistor can be fed to said operational amplifier which emits an output signal at the output, whereby said signal is proportional to the detected current. Current measuring is made independent from the offset voltage of the operational amplifier by including the precision resistor in an additional voltage divider. A driving voltage for the operational amplifier can be picked up when the load current circuit is switched off. Said driving voltage is greater than the maximum offset voltage of the operational amplifier. The occurring output voltage of the operational amplifier is fed to a microcomputer which allocates said output voltage to the current value zero by the precision resistor. The driving voltage at the operational amplifier increases due to the voltage drop at the precision resistor when the load current circuit is closes. The microcomputer emits an output signal that is proportional to the voltage increase.
    • 本发明涉及一种装置,用于通过一个负载电路的测量电阻与一个运算放大器感测所述电流,在测量电阻器上的电压降可以被供给并且它提供了一个正比于输出检测到的电流输出信号。 电流测量由此制成独立于运算放大器的偏移电压的,该测量电阻被包括在附加的电压分压开关关断的负载电路的运算放大器的控制电压可在可挖比其最大偏置电压大于所述运算放大器的所述从而发生Ausgansgsspannung 被提供给微型计算机,其分配此输出电压由测量电阻器的零的电流值,并且在通过在测量电阻器上的电压降闭合负载电路在运算放大器增加了控制电压和微型计算机输出的电压上升成比例的输出信号。