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11. 发明授权

US08564279B2 Device and method for measuring current and power in a plug or receptacle 失效
标题翻译：用于测量插头或插座中的电流和功率的装置和方法
公开(公告)号：US08564279B2
公开(公告)日：2013-10-22
申请号：US12941775
申请日：2010-11-08
申请人： Kevin M. Johnson , Greg Hunter , Matthew D Abelson
发明人： Kevin M. Johnson , Greg Hunter , Matthew D Abelson
IPC分类号： G01R15/18 , G01R1/22
CPC分类号： G01R1/22 , G01R15/183 , G01R21/06 , H01R13/6633
摘要： An aspect of the present disclosure relates to an electrical receptacle configured to receive a plug having two or more prongs and capable of being connected to an associated load. The electrical receptacle may include a housing and a housing cover mounted on the housing including apertures for receiving at least one of the prongs. In addition, the receptacle may include at least two electrical contacts for engaging the prongs positioned in the housing, a magnetic current sensor defining an opening, wherein the magnetic current sensor opening is operatively coupled to an opening defined by at least one of the apertures. Wherein when one of the prongs is inserted through one of the apertures, the prong extends through the magnetic current sensor and engages at least one of said electrical contacts.
摘要翻译：本公开的一个方面涉及被配置为接收具有两个或更多个插脚并且能够连接到相关负载的插头的电插座。电插座可以包括壳体和安装在壳体上的壳体盖，其包括用于容纳至少一个插脚的孔。此外，插座可以包括用于接合定位在壳体中的插脚的至少两个电触头，限定开口的磁流传感器，其中磁流传感器开口可操作地联接到由至少一个孔限定的开口。其中当其中一个插脚通过其中一个孔插入时，插脚延伸穿过磁流传感器并与至少一个所述电触点接合。

12. 发明申请

US20050184722A1 Clamp meter with dual display 有权
公开(公告)号：US20050184722A1
公开(公告)日：2005-08-25
申请号：US10783612
申请日：2004-02-20
申请人： James Gregorec
发明人： James Gregorec
IPC分类号： G01R1/22 , G01R1/04 , G09G5/00
CPC分类号： G01R1/04 , G01R1/22
摘要： A clamp type digital multimeter has one or more digital displays mounted so as to permit at least one of the displays to be read even when attachment of the clamp jaws about a conductor forces the display into an orientation that renders it inaccessible. The meter either has a single display that can be pivoted to an orientation convenient for viewing, or it has dual displays mounted on separate surfaces of the meter's housing. A protective flap may cover one or both of the displays when it is not needed for viewing.

13. 发明授权

US5825175A Magnetic sensors 失效
标题翻译：磁性传感器
公开(公告)号：US5825175A
公开(公告)日：1998-10-20
申请号：US669559
申请日：1996-09-17
申请人： Ahmet Selcuk
发明人： Ahmet Selcuk
IPC分类号： G01R33/07 , G01R1/18 , G01R1/22 , G01R15/20 , G01R33/00
CPC分类号： G01R1/18 , G01R1/22 , G01R15/207
摘要： The invention concerns magnetic sensors and, particularly, a magnetic sensor arrangement for use in an electrical measuring device. In the device, magnetic sensors are provided within recesses formed in the arms of the device. The recesses are typically formed within laminations and act so as to shield the magnetic sensors from interference, whilst enabling them to detect a magnetic field of an electrical conductor placed between the two arms.
摘要翻译： PCT No.PCT / GB95 / 00081 Sec。 371日期1996年9月17日 102（e）日期1996年9月17日PCT 1995年1月17日PCT PCT。 WO95 / 20167 PCT出版物日期1995年7月27日本发明涉及磁传感器，特别涉及用于电测量装置的磁传感器装置。在该装置中，磁性传感器设置在形成在装置的臂中的凹槽内。这些凹槽通常形成在叠片内并用于屏蔽磁性传感器免受干扰，同时使它们能够检测放置在两个臂之间的电导体的磁场。

14. 发明授权

US5488304A Method and apparatus for judging active/dead status of communication cable 失效
标题翻译：用于判断通信电缆的活动/死亡状态的方法和装置
公开(公告)号：US5488304A
公开(公告)日：1996-01-30
申请号：US252950
申请日：1994-06-02
申请人： Toshiharu Hamade , Masaichi Shiotani , Yukio Shimo , Munehiko Higashikata
发明人： Toshiharu Hamade , Masaichi Shiotani , Yukio Shimo , Munehiko Higashikata
IPC分类号： G01R1/22 , G01R15/18 , G01R19/15 , G01R19/25 , G01R23/16 , G01R31/12
CPC分类号： G01R1/22 , G01R19/15 , G01R15/186 , G01R19/25 , G01R23/16
摘要： A scheme for judging an active/dead status of a communication cable, which is capable of making an accurate judgement quickly for each cable laid at a working site. In this scheme, data representing a frequency spectrum of signals on a communication cable measured in a state in which the communication cable is known to be active/dead is stored in advance, and the data representing the frequency spectrum of the signals on a communication cable to be judged is measured by detecting signals on the communication cable to be judged while electromagnetically coupling a probe to the communication cable to be judged. Then, the active/dead status of the communication cable to be judged is judged according to a result of comparing a prescribed threshold with a difference of the data representing the frequency spectrum stored in advance and the data representing the frequency spectrum measured by the probe.
摘要翻译：用于判断通信电缆的活动/死亡状态的方案，其能够对在工作现场的每个电缆进行快速准确的判断。在该方案中，预先存储表示在通信电缆已知有效/死亡的状态下测量的通信电缆上的信号的频谱的数据，并且表示通信电缆上的信号的频谱的数据通过在将探头电磁耦合到要判断的通信电缆的同时检测要判断的通信电缆上的信号来测量。然后，根据将预定阈值与表示预先存储的频谱的数据的差异与表示由探测器测量的频谱的数据进行比较的结果来判断要判断的通信电缆的活动/死亡状态。

15. 发明授权

US4841237A Current-measuring device 失效
标题翻译：电流测量装置
公开(公告)号：US4841237A
公开(公告)日：1989-06-20
申请号：US82543
申请日：1987-08-07
申请人： Bernard Landre
发明人： Bernard Landre
IPC分类号： G01R1/22 , G01R15/18 , H01F38/28 , H01F38/30
CPC分类号： G01R1/22 , H01F38/30 , H01F2038/305
摘要： A current-measuring device in accordance with the invention comprises an annular magnetic circuit having separate first and second magnetic circuit portions (1, 2) with ends suitable for coming face-to-face to form a closed magnetic circuit, a housing (5) surrounding at least the first portion (1) of the magnetic circuit, magnetic flux detection apparatus (12) for detecting a magnetic flux in the magnetic circuit, and locking apparatus for locking the two magnetic circuit portions against each other; the device is characterized in that the locking apparatus comprise a bearing member (7) carried by the housing and pivot apparatus (7) enabling at least one of the magnetic circuit portions to pivot relative to the housing, in such a manner that during pivoting the second magnetic portion comes into contact with the bearing member and is firmly held against the first magnetic circuit portion thereby.
摘要翻译：根据本发明的电流测量装置包括环形磁路，其具有分开的第一和第二磁路部分（1,2），其端部适于面对面地形成闭合磁路，壳体（5）至少围绕磁路的第一部分（1），用于检测磁路中的磁通量的磁通量检测装置（12）和用于将两个磁路部分彼此锁定的锁定装置; 该装置的特征在于，锁定装置包括由壳体和枢转装置（7）承载的支承构件（7），使得至少一个磁路部分能够相对于壳体枢转，使得在枢转第二磁性部分与轴承部件接触并由此牢固地保持在第一磁路部分上。

16. 发明授权

US4829239A Multimeter 失效
标题翻译：万用表
公开(公告)号：US4829239A
公开(公告)日：1989-05-09
申请号：US137535
申请日：1987-12-01
申请人： Jorg Holstein , Lothar Rapp
发明人： Jorg Holstein , Lothar Rapp
IPC分类号： G01R1/22 , G01R15/12 , G01R21/08
CPC分类号： G01R1/22 , G01R15/125 , G01R21/08
摘要： A multimeter comprising a clip-on device (12) and a Hall-effect measuring circuit (5) for measuring either a direct or an alternating current I. Moreover, the multimeter comprises a voltage-measuring circuit (2) for measuring either a d.c. or an a.c. voltage U as applied to two input/output combination sockets (3, 4). By means of a function transformer (30), a digitizing unit (19), a digital unit (25) and further circuit components which also include a battery-operated power-supply unit (1), the measured current and/or voltage values, by taking into due consideration any stored correcting values as well as such correcting values which result from adjusting measurements, and any circuit-specific constants as already previously stored by the manufacturer, are processed in accordance with predetermined rules for proportioning into display signal-waveform-independent values relating to the current I, the voltage U, the apparent power Ps, the real power Pw, the power factor, the frequency f, and further values.
摘要翻译： PCT No.PCT / EP87 / 00191 Sec。 371 1987年12月1日第 102（e）1987年12月1日PCT PCT 1987年4月8日提交PCT公布。公开号WO87 / 06352 日期：1987年10月22日。一种万用表，包括夹持装置（12）和用于测量直流或交流电流I的霍尔效应测量电路（5）。此外，万用表包括电压测量电路 2）用于测量直流电或a.c. 电压U应用于两个输入/输出组合插座（3,4）。通过功能变压器（30），数字化单元（19），数字单元（25）和还包括电池供电单元（1）的另外的电路组件，测量的电流和/或电压值通过适当考虑，根据预定的规则处理任何存储的校正值以及由调整测量产生的校正值以及制造商先前存储的任何电路特定常数，以便与比例显示信号波形 - 与电流I，电压U，视在功率Ps，有功功率Pw，功率因数，频率f和其他值有关的独立值。

17. 发明授权

US4806855A System for rating electric power transmission lines and equipment 失效
公开(公告)号：US4806855A
公开(公告)日：1989-02-21
申请号：US61342
申请日：1987-06-12
申请人： Murray W. Davis
发明人： Murray W. Davis
IPC分类号： G01R15/14 , G01R19/15 , H02J13/00 , G01R1/22
CPC分类号： G01R19/15 , G01R15/14 , H02J13/0086 , G01R1/22 , Y02E60/727 , Y02E60/74 , Y04S10/26 , Y04S10/30
摘要： A system for determining the current carrying capability of one or more overhead power transmission lines monitors one or more spans of each line on real-time basis and identifies the span having the lowest current carrying capacity which in turn establishes the maximum capacity of the entire line. The thermal state of each monitored line span is determined by measuring the conductor temperature, line current, solar radiation, ambient temperature, and in some cases wind speed and wind direction. These parameters are monitored by a sensor-transmitter unit that may be removably clamped on the line conductor which may range in size from one to several inches in diameter, and includes a radio transmitter for transmitting sensed data to a receiving substation. The data from the sensor-transmitter is multiplexed and transmitted by a telecommunications link to a computer which automatically determines line capacity using the real-time data and also calculates the time required for the "critical span" having the lowest current capacity to reach its maximum safe temperature based on any of a number of step changes in load demands. Each sensor-transmitter may include sensors for monitoring the current level, conductor temperature, solar radiation impinging on the conductor, ambient temperature, wind direction and velocity and conductor sag. These sensors and the transmitter are enclosed in a corona-free housing and are powered by a power supply that includes a transformer core which surrounds and is inductively coupled with the monitored conductor. The core is formed in an upper and lower portion which are shiftable relative to each other upon opening and closing a pair of conductor clamping jaws in order to permit the conductor to be introduced into and withdrawn from the core and to allow the clamping jaws to fit a range of conductor diameters while maintaining constant air gaps between the upper and lower core portions.

18. 发明授权

US4728887A System for rating electric power transmission lines and equipment 失效
标题翻译：电力输电线路和设备评级系统
公开(公告)号：US4728887A
公开(公告)日：1988-03-01
申请号：US623842
申请日：1984-06-22
申请人： Murray W. Davis
发明人： Murray W. Davis
IPC分类号： G01R15/14 , G01R19/15 , H02J13/00 , G01R1/22
CPC分类号： G01R15/14 , G01R19/15 , H02J13/0086 , Y02E60/727 , Y04S10/26
摘要： A system for determining the current carrying capability of one or more overhead power transmission lines monitors one or more spans of each line on real-time basis and identifies the span having the lowest current carrying capacity which in turn establishes the maximum capacity of the entire line. The thermal state of each monitored line span is determined by measuring the conductor temperature, line current, solar radiation, ambient temperature, and in some cases wind speed and wind direction. These parameters are monitored by a sensor-transmitter unit that may be removably clamped on the line conductor which may range in size from one to several inches in diameter, and includes a radio transmitter for transmitting sensed data to a receiving substation. The data from the sensor-transmitter is multiplexed and transmitted by a telecommunications link to a computer which automatically determines line capacity using the real-time data and also calculates the time required for the "critical span" having the lowest current capacity to reach its maximum safe temperature based on any of a number of step changes in load demands. Each sensor-transmitter may include sensors for monitoring the current level, conductor temperature, solar radiation impinging on the conductor, ambient temperature, wind direction and velocity and conductor sag. These sensors and the transmitter are enclosed in a corona-free housing and are powered by a power supply that includes a transformer core which surrounds and is inductively coupled with the monitored conductor.
摘要翻译：用于确定一个或多个架空电力传输线的当前承载能力的系统实时监测每条线路的一个或多个跨度，并且识别具有最低载流能力的跨度，其进而确定整个线路的最大容量。每个监测线路跨度的热状态是通过测量导体温度，线路电流，太阳辐射，环境温度，以及在某些情况下测量风速和风向来确定的。这些参数由传感器 - 发射器单元监测，传感器 - 发射器单元可以可拆卸地夹紧在线路导体上，直径范围可以在1至几英寸之间，并且包括用于将感测数据发送到接收变电站的无线电发射机。来自传感器 - 发射器的数据通过电信链路复用并发送到计算机，该计算机使用实时数据自动确定线路容量，并且还计算具有最低电流容量达到其最大值的“临界跨度”所需的时间基于负载需求中的任何阶跃变化中的任何一个的安全温度。每个传感器 - 发射器可以包括用于监测当前水平的传感器，导体温度，照射在导体上的太阳辐射，环境温度，风向和速度以及导体垂度。这些传感器和变送器被封装在无电晕的外壳中，并且由一个电源供电，该电源包括一个变压器铁心，该变压器铁芯围绕并与被监测的导体感应耦合。

19. 发明授权

US4626778A Active current sensor with primary reducing winding 失效
标题翻译：有源电流传感器，带初级减速绕组
公开(公告)号：US4626778A
公开(公告)日：1986-12-02
申请号：US509447
申请日：1983-06-09
申请人： Richard Friedl
发明人： Richard Friedl
IPC分类号： G01R1/22 , G01R15/18 , H01F38/28 , H01F40/06 , G01R15/02
CPC分类号： H01F38/28 , G01R15/185
摘要： The current to be measured (I) within a conductor (1), is branched into two conductors (3, 4) of the same conductor material, which have a resistance differing relatively little from one another and at opposite winding direction form the primary winding of an active current transducer. The secondary current (i) is determined by the resistance ratio of the two individual conductors (3, 4). Through mechanical, and therewith thermal contact between the two individual conductors (3, 4), their resistance-ratio is also maintained at high temperature coefficients and at higher conductor temperatures.
摘要翻译： PCT No.PCT / EP82 / 00225 Sec。 371日期：1983年6月9日 102（e）日期1983年6月9日PCT提交1982年10月12日PCT公布。第WO83 / 01535号公报日期：1983年4月28日。在导体（1）内待测量的电流（I）分支为相同导体材料的两个导体（3,4），其具有彼此相对较小的电阻和相反的缠绕方向形成有源电流传感器的初级绕组。二次电流（i）由两个单独导体（3,4）的电阻比确定。通过两个单独的导体（3,4）之间的机械和热接触，它们的电阻比也保持在高温系数和更高的导体温度。

20. 发明授权

US4513246A Clamp-on ammeter 失效
标题翻译：夹紧电流表
公开(公告)号：US4513246A
公开(公告)日：1985-04-23
申请号：US422223
申请日：1982-09-23
申请人： Aurele Blain
发明人： Aurele Blain
IPC分类号： G01R1/22 , G01R19/00
CPC分类号： G01R1/22
摘要： A clamp-on ammeter for measuring current flows in a conductor is described. The ammeter is of a type comprising a magnetic core which can be located about a conductor and an indicator which responds to the magnetic flux consequently generated in the magnetic core to produce a signal indicative of the magnitude of the conductor current. Means are provided for restoring the magnetic core to a predetermined magnetic state for each measurement. The resetting means include a coil wound about the core and a coil energizing circuit which can be activated to produce in the core a residual magnetic flux substantially identical to that produced in the core when unmagnetized by a DC conductor current of predetermined magnitude, which represents the maximum value of any DC current which can be measured by the ammeter. The ammeter includes another coil and energizing circuitry which then produce in the core an offsetting magnetic flux equal in magnitude but opposite in direction to the residual magnetic flux, thereby eliminating any offset which would otherwise be generated by the indicator in response to the residual magnetic flux. To adapt the ammeter for AC measurements, another coil is wound on the core and is electrically shorted when the magnetic flux cutting the windings of the coil changes direction from that of the residual magnetic flux. The shorting of the coil tends to reduce the magnitude of the magnetic flux in the core to substantially zero. By emplying an indicator responsive to a time average magnitude of the core magnetic flux a signal indicative of the magnitude of an alternating current carried by a conductor is produced.
摘要翻译：描述了用于测量导体中的电流流动的夹紧电流表。电流表是一种类型，其包括可以围绕导体定位的磁芯和响应于在磁芯中产生的磁通量的指示器，以产生指示导体电流的大小的信号。提供了用于每次测量将磁芯恢复到预定磁状态的装置。复位装置包括缠绕在芯上的线圈和一个线圈通电电路，该线圈激励电路可以被激活以在芯中产生与通过预定大小的直流导体电流进行非磁化时基本相同的剩余磁通量，可通过电流表测量的任何直流电流的最大值。电流表包括另一个线圈和激励电路，然后在磁芯中产生一个量值相等但与残余磁通相反方向的偏置磁通量，从而消除了响应于剩余磁通量而由指示器产生的任何偏移。为了使电流表适应于交流测量，当切断线圈绕组的磁通量从残余磁通量的方向改变方向时，另一线圈缠绕在芯上并被电短路。线圈的短路倾向于将芯中的磁通量的大小减小至基本为零。通过应用响应于核心磁通量的时间平均幅度的指示器，产生指示由导体携带的交流电流的大小的信号。

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