Electronic electricity meters
    1.
    发明授权
    Electronic electricity meters 失效
    电子电表

    公开(公告)号:US5742512A

    公开(公告)日:1998-04-21

    申请号:US565464

    申请日:1995-11-30

    CPC分类号: G01R21/133 G01R22/00

    摘要: An electronic energy meter is described. The meter includes, in one form, voltage and current sensors having their outputs coupled to an analog to digital converter. The digital signals output by the converter are supplied to a digital signal processor (DSP) which outputs digitized metering quantities to a microcomputer. Using the metering quantities supplied by the DSP, the microcomputer performs additional metering calculations and functions. In one aspect, the present invention is directed to a method for determining whether an option board is being used and, if so, controlling meter operations in accordance with the coupled option board. In another aspect, the present invention is directed to a high function option board which, when enabled, operates as a master and the meter microcomputer automatically switches from its normal master mode to slave mode. In yet another aspect, the present invention is directed to converting the functionality of the electronic electricity meter from a first mode of operation to a second mode of operation. In still another aspect, the present invention is directed to a structure for avoiding, or minimizing, the loss of billing data when converting, or upgrading (or downgrading), meter operations.

    摘要翻译: 描述了一种电子式电能表。 该仪表以一种形式包括其输出耦合到模数转换器的电压和电流传感器。 由转换器输出的数字信号被提供给数字信号处理器(DSP),数字信号处理器(DSP)将数字化的计量量输出到微型计算机。 使用由DSP提供的计量数量,微型计算机执行附加的计量计算和功能。 一方面,本发明涉及一种用于确定是否正在使用选件板的方法,如果是,则根据所耦合的选件板来控制仪表操作。 在另一方面,本发明涉及一种高功能选项板,当使能时,其作为主机操作,并且仪表微计算机自动从其正常主模式切换到从模式。 在另一方面,本发明涉及将电子电表的功能从第一操作模式转换到第二操作模式。 另一方面,本发明涉及一种用于在转换或升级(或降级)仪表操作时避免或最小化计费数据丢失的结构。

    Demand meter having load profile recording capabilities
    3.
    发明授权
    Demand meter having load profile recording capabilities 失效
    需求量表具有负荷曲线记录功能

    公开(公告)号:US5924051A

    公开(公告)日:1999-07-13

    申请号:US954419

    申请日:1997-10-20

    IPC分类号: G01R21/133 G01R11/63

    CPC分类号: G01R21/133

    摘要: A demand electronic electricity meter having load profile recording capabilities is presented. Load profile recording requires memory for storing the recorded information, whereby either on-board memory or external memory is required. Load profile parameters include the number of channels (e.g., 1, 2 or more channels), interval size (e.g., 1, 5, 10, 15, 30 or 60 minutes), quantities to be recorded (e.g., kWh and kvarh, kVAh, or Qh) and channel scalar/divisor (e.g., for each channel, a 2 byte divisor and a 2 byte scalar). With two channels, only two quantities are available for recording, kWh and the one other quantity that the meter has been configured to record, (e.g., kvarh, KVAh, or kQh). For each quantity selected, snapshots of the corresponding total accumulator; (i.e. total kWh and total kvarh, kVAh or kQh) are automatically maintained.

    摘要翻译: 提出了一种具有负荷曲线记录功能的需求电子电表。 负载配置文件记录需要用于存储记录信息的存储器,由此需要板载存储器或外部存储器。 负载曲线参数包括通道数(例如,1,2个或更多个通道),间隔大小(例如,1,5,10,15,30或60分钟),要记录的数量(例如,kWh和kvarh,kVAh ,或Qh)和通道标量/除数(例如,对于每个通道,2字节除数和2字节标量)。 使用两个通道,只有两个数量可用于记录,kWh和仪表已配置为记录的其他数量(例如kvarh,KVAh或kQh)。 对于所选择的每个数量,相应的总累加器的快照; (即总kWh和总kvarh,kVAh或kQh)被自动维持。

    Methods and apparatus for updating firmware in an electronic electricity meter
    4.
    发明授权
    Methods and apparatus for updating firmware in an electronic electricity meter 失效
    用于更新电子电表中固件的方法和装置

    公开(公告)号:US07065457B1

    公开(公告)日:2006-06-20

    申请号:US09606554

    申请日:2000-06-29

    IPC分类号: G01R19/00

    CPC分类号: G01R21/133

    摘要: The present invention, in one embodiment, is a method for operating an electronic electric meter having current and voltage sensors configured to generate measurements of current and voltage, respectively; a microcomputer coupled to the current and voltage sensors and having on-chip masked read only memory (ROM); and a nonvolatile, alterable memory coupled to the microcomputer. The method includes steps of: storing vectors pointing to program portions of the ROM in the non-volatile memory; and using the stored vectors to operate the microcomputer to execute the program portions stored in the ROM to control operation of the meter.

    摘要翻译: 本发明在一个实施例中是一种用于操作电子电表的方法,该电子电表具有分别产生电流和电压测量值的电流和电压传感器; 耦合到电流和电压传感器并具有片上掩蔽的只读存储器(ROM)的微型计算机; 以及耦合到微型计算机的非易失性可变存储器。 该方法包括以下步骤:将指向ROM的程序部分的向量存储在非易失性存储器中; 并使用存储的矢量来操作微型计算机以执行存储在ROM中的程序部分,以控制仪表的操作。

    Vector electricity meters and associated vector electricity metering
methods
    7.
    发明授权
    Vector electricity meters and associated vector electricity metering methods 失效
    矢量电表和相关矢量电计量方法

    公开(公告)号:US5854995A

    公开(公告)日:1998-12-29

    申请号:US872033

    申请日:1997-06-10

    IPC分类号: G01R21/133 G01R25/00

    CPC分类号: G01R21/1331

    摘要: Line voltage and line current signals are sensed on a power line having at least one conducting path. The sensed line voltages and line currents are converted into a digital signal. A phase-to-neutral voltage signal and phase current signal are computed from the digital signal to thereby define a phase of the power line. An interval of orthogonality is determined from the sensed voltage and current signals, coinciding with passage of an integral number of cycles of a fundamental frequency reference signal which is computed from the computed phase-to-neutral voltage signal. A vector metering quantity is computed for the determined interval of orthogonality from the computed phase-to-neutral voltage signal and the computed phase current signal. The vector metering quantities to be computed may be identified and computed based upon an associated detent. The vector metering quantity is also computed based on an identified circuit topology.

    摘要翻译: 在具有至少一个导电路径的电力线上检测线电压和线电流信号。 感测到的线路电压和线路电流被转换为数字信号。 从数字信号计算出相电压中性点电压信号和相电流信号,从而定义电力线的相位。 从感测的电压和电流信号确定正交性的间隔,其与从计算出的相电压信号计算的基频信号的整数倍的循环相一致。 根据计算的相电压信号和计算出的相电流信号,计算确定的正交间隔的向量计量量。 可以基于相关联的制动器来识别和计算要计算的矢量计量量。 也可以基于所识别的电路拓扑来计算矢量测量量。

    Method and apparatus for executing a command in a plurality of
electrical metering devices
    8.
    发明授权
    Method and apparatus for executing a command in a plurality of electrical metering devices 失效
    用于在多个电计量装置中执行命令的方法和装置

    公开(公告)号:US5995022A

    公开(公告)日:1999-11-30

    申请号:US744131

    申请日:1996-11-05

    摘要: A method and apparatus for executing a command in a number of electrical metering devices of a power distribution system provides each metering device with a command having a predetermined execution time and subsequently executes the command in each of the metering devices once the present time value equals or exceeds the predetermined execution time. Each electrical metering device includes a clock for providing the present time value as well as a memory device for receiving and storing the command. Each electrical metering device also includes at least one controller or microprocessor for monitoring or comparing the present time value with the predetermined execution time of the stored command and for executing the stored command once the present time value is at least as large as the predetermined execution time. A command may thus be provided to each electrical metering device of a power distribution system at various prior arbitrary times. The command may subsequentially be executed simultaneously in each of the electrical metering devices at the predetermined execution time.

    摘要翻译: 用于在配电系统的多个电计量装置中执行命令的方法和装置为每个计量装置提供具有预定执行时间的命令,并且随后在每个计量装置中执行命令,一旦当前时间值等于或等于 超过预定执行时间。 每个电计量装置包括用于提供当前时间值的时钟以及用于接收和存储该命令的存储装置。 每个电计量装置还包括至少一个控制器或微处理器,用于监视或比较当前时间值与所存储的命令的预定执行时间,并且一旦当前时间值至少与预定执行时间一样大,则执行存储的命令 。 因此,可以在各种先前的任意时间向配电系统的每个电计量装置提供命令。 在预定执行时间,可以在每个电计量装置中顺序执行该命令。

    Method of serially processing binary characters asynchronously received
by an electrical energy meter
    9.
    发明授权
    Method of serially processing binary characters asynchronously received by an electrical energy meter 失效
    串行处理由电能表异步接收的二进制字符的方法

    公开(公告)号:US5469153A

    公开(公告)日:1995-11-21

    申请号:US968948

    申请日:1992-10-30

    CPC分类号: H04Q9/14 H02J13/00

    摘要: A method of processing binary characters received by an electrical energy meter includes the step of generating a clock signal internal to the meter so that asynchronously received serial data can be processed, even though a synchronization clock signal does not accompany the serial data. The method includes the steps of detecting receipt of a first of a string of binary input characters at a serial input/output port of the meter, and then sampling the detected first character by generating a respective first clock signal which is phase-synchronized with a least significant bit of the first character. These steps are then repeated in sequence for each subsequently received character in the string. The sampled characters can be temporarily stored in meter hardware such as a register and written to memory such as programmable read-only or random-access memory. Phase-synchronization between the sampling clock signals and each of the respective characters is achieved even though the data rate of the binary string (e.g., 9600 bits/sec) is unequal to an integer fraction of the frequency of the main crystal oscillator of the meter (e.g., 4.19 MHz), which controls meter operations.

    摘要翻译: 一种处理由电能表接收的二进制字符的方法包括产生仪表内部的时钟信号的步骤,即使同步时钟信号不伴随串行数据,也可以处理异步接收的串行数据。 该方法包括以下步骤:检测在仪表的串行输入/输出端口处的一串二进制输入字符的接收,然后通过产生与第一个时钟信号相同步的相应的第一时钟信号来对所检测的第一个字符进行采样 第一个字符的最低有效位。 然后,对于字符串中随后接收的每个字符,依次重复这些步骤。 采样字符可以临时存储在诸如寄存器的仪表硬件中,并写入诸如可编程只读或随机存取存储器之类的存储器。 即使二进制串的数据速率(例如,9600比特/秒)不等于仪表的主晶体振荡器的频率的整数分数,也可以实现采样时钟信号和各个字符之间的相位同步 (例如,4.19 MHz),可控制仪表运行。

    Method and apparatus for sharing passwords
    10.
    发明授权
    Method and apparatus for sharing passwords 失效
    用于共享密码的方法和设备

    公开(公告)号:US5428351A

    公开(公告)日:1995-06-27

    申请号:US998064

    申请日:1992-12-28

    摘要: The method and apparatus for sharing passwords includes an electronic meter comprising a metering unit, a register unit, an optical port, and a communications unit. An external reading device, such as a handheld reading device or a personal computer, is coupled to the communication board via the optical port. The method and apparatus for sharing passwords provides that both the meter register and the communications unit have the same security code. In addition, the communications unit is able to distinguish between a security code for the communications unit and a security code for the meter register, and the communications unit will not interfere with communications between the external reading device and the meter register.

    摘要翻译: 用于共享密码的方法和装置包括一个包括计量单元,寄存器单元,光学端口和通信单元的电子仪表。 诸如手持读取装置或个人计算机的外部读取装置经由光学端口耦合到通信板。 用于共享密码的方法和装置提供了仪表寄存器和通信单元具有相同的安全码。 此外,通信单元能够区分用于通信单元的安全代码和用于仪表寄存器的安全代码,并且通信单元不会干扰外部读取设备和仪表寄存器之间的通信。