Showing papers on "Electricity meter published in 2001"
Patent•
09 Aug 2001
TL;DR: In this article, a system for remote monitoring of electricity consumption is described, in one embodiment the system may comprise a plurality of electric meters, a pluralityof communication devices having a unique address and defining a wireless communication network, and a site controller.
Abstract: A system for providing remote monitoring of electricity consumption is provided. Briefly described, in one embodiment the system may comprise a plurality of electric meters, a plurality of communication devices having a unique address and defining a wireless communication network, and a site controller. Each of the plurality of electric meters may be configured to measure the electricity consumption of a load attached to the electric meter. Each of the plurality of communication devices may be associated with one of the plurality of electric meters and configured to receive data related to the electricity consumption of the electric meter data and generate a transmit message using a predefined communication protocol being implemented by the wireless communication network. The transmit message may comprise the unique identifier and the data related to the electricity consumption of the electric meter.
106 citations
Patent•
29 Jun 2001
TL;DR: In this paper, a revenue accuracy electrical power meter provides a power supply utilizing high and low capacitive storage banks to supply sufficient energy to survive short duration power quality events which jeopardize the meter's operating power.
Abstract: Power quality detection, monitoring, reporting, recording and communication in a revenue accuracy electrical power meter is disclosed. All recorded and computed data is moved to non-volatile storage via direct memory access transfer in the event that a power quality event jeopardizes the operating power of the meter. The meter provides a power supply utilizing high and low capacitive storage banks to supply sufficient energy to survive short duration power quality events which jeopardize the meter's operating power. The power supply also enables the meter to initiate and complete a shut-down routine allowing the storage of he recorded and computed data. Further, a separate power supply utilizing a capacitive storage bank is utilized to operate a communications device when the operating power is lost. The communications device switches from the meter power supply to the alternate capacitive storage bank when an power outage occurs and then initiates a connection with an external network to report the loss of operating power and send the appropriate power management data.
71 citations
Patent•
29 Jun 2001
TL;DR: In this article, a radio frequency automated meter reading (AMR) device for determining quantities of a consumed utility product including electric, gas and water service is presented, which intermittently transmits utility product consumption as a modulated RF signal, and does not require complex polling and bi-directional communication.
Abstract: A radio frequency automated meter reading (AMR) device for determining quantities of a consumed utility product including electric, gas and water service. The present invention intermittently transmits utility product consumption as a modulated RF signal, and does not require complex polling and bi-directional communication. Data is obtained and formatted for transmission and is adapted to be received by a remote receiving device having an RF receiver. The present invention is adaptable to water meters, gas meters and electric meters, and has an IR programming module facilitating remote programming and diagnostic procedures. In the case of water and gas meters, an internal lithium battery provides an operational life of up to ten years. In the case of the electric meter, power is tapped directly from the electric service.
70 citations
Patent•
13 Apr 2001
TL;DR: An internet ready electronic power meter with automatic reporting capabilities is presented in this article, which periodically transmits utility usage reports to a remote site using internet and conventional protocols of the public or private computer network, with selective access of customer data by customers and others for determining usage and accounting matters.
Abstract: An internet ready electronic power meter with automatic reporting capabilities, the electronic power meter recording electrical power usage and other utility usage, and periodically transmitting utility usage reports to a remote site using internet and conventional protocols of the public or private computer network, with selective access of customer data by customers and others for determining usage and accounting matters, with added capabilities of site automation, site security and appliance controls providing new business models for revenue generation.
47 citations
Patent•
01 Jun 2001TL;DR: In this paper, the authors present an electronic electricity meter which includes voltage sensors configured to generate measurements of voltage at voltage elements, current sensors and current through current elements, and a microcomputer coupled to the current and voltage sensors and configured to control operation of the meter, including calibration constants to compensate for instrument transformer ratio and phase angle errors.
Abstract: The present invention, in one embodiment, is an electronic electricity meter which includes voltage sensors configured to generate measurements of voltage at voltage elements, current sensors configured to generate measurements of current through current elements, a microcomputer coupled to the current and voltage sensors and configured to control operation of the meter, and a memory coupled to the microcomputer including calibration constants to compensate for instrument transformer ratio and phase angle errors, the microcomputer configured to use the calibration constants, when so instructed, to correct for measurement errors that occur based upon instrument transformer ratios and phase angles, to correct metering quantities calculated by the microcomputer.
35 citations
01 Mar 2001
TL;DR: A new electronic shifter based on stochastic signal processing is proposed, able to solve the algebraic equations involved in the calculations of reactive power and energy in the frequency-domain approach.
Abstract: There is not a universally recognised definition of reactive power which can be applied under non-sinusoidal conditions. In general, a 90/spl deg/ voltage shift is used by reactive meters. A new electronic shifter based on stochastic signal processing is proposed taht allows for simple and cost-effective digital implementation of a reactive power and energy meter. The proposed stochastic arithmetic is able to solve the algebraic equations involved in the calculations of reactive power and energy in the frequency-domain approach.
25 citations
Patent•
03 Aug 2001TL;DR: In this paper, the phase compensation on current transformers is applied to compensate for the non-linearity in the phase shift for the transformers, where the acquisition of one of the two samples for the current signals is delayed and time shifted averaged, such that the average of two signals provides a compensated signal.
Abstract: An electronic power meter for metering the consumption of electrical energy on power lines includes phase compensation on current transformers, whereby the acquisition of one of the two samples for the current signals is delayed and time shifted averaged, such that the average of the two signals provides a compensated signal. The amount of delay is determined from the phase lag the current transformers exhibit during the process of calibration for phase compensation. The amount of compensation that is applied varies with current, thus compensation for the non-linearity in the phase shift for the current transformers. The degree of non-linearity is computed which results in only two variables that define the phase lag at higher current and the degree of non-linearity. The technique helps in using inexpensive current transformers in the meter.
22 citations
Patent•
06 Jul 2001
TL;DR: In this article, the authors present an electricity meter assembly with a meter mounting device and a measurement meter, which includes a measurement circuit operable to receive measurement signals and generate energy consumption data therefrom.
Abstract: An electricity meter assembly has a meter mounting device and a measurement meter. The meter mounting device is operable to receive power lines of a load being metered, and includes a sensor circuit. The sensor circuit is operably connected to the power lines, and is operable to generate measurement signals representative of voltage and current signals on the power lines. The measurement meter includes a measurement circuit operable to receive measurement signals and generate energy consumption data therefrom. The measurement meter further includes a device that communicates information relating to the energy consumption data. The measurement meter is operable to be removably coupled to the meter mounting device such that the measurement circuit is operably connected to the sensor circuit to received the measurement signals when the measurement meter is coupled to the meter mounting device.
21 citations
Patent•
28 Feb 2001
TL;DR: In this article, the relay states and pulse counts are transmitted to the building unit, and the states of the relays and pulses are regenerated by the building units as outputs to the energy management system.
Abstract: A meter unit, co-located to an electric meter, and a building unit, co-located with an energy management system, cooperate to deliver electric meter relay pulses from the electric meter to an energy management system via a wireless link. Meter relay pulses are input to the meter unit from the electric meter, relay states and pulse counts are transmitted to the building unit, and the states of the relays and pulses are regenerated by the building unit as outputs to the energy management system. The pulses output from the building unit perform as though they were created by the meter originally, but without the traditional wired connection. The system provides for error correction should a pulse count transmission be lost, as well as repeating of an end-of-interval pulse so that the energy management system may synchronize its data collection and operation to the measurements from the meter.
15 citations
11 Dec 2001
TL;DR: In this article, a new meter named an "air power meter", which is under patent application, is proposed with the purpose of realizing air energy consumption management and promoting energy-saving activities in factories.
Abstract: Discusses pneumatic air power on the basis of an energy transformation analysis of an air compressor and actuator. The work-producing potential of compressed air is proposed to represent the air power, and the definition and calculation of air power are given. Some calculations of air power are also shown in various conditions of air pressure and temperature. Then, a new meter named an "air power meter", which is under patent application, is proposed with the purpose of realizing air energy consumption management and promoting energy-saving activities in factories. The design of the meter, including its measurement method and its configuration, is introduced. It is clear that air power should be measured by obtaining the air pressure, temperature and flow rate. Furthermore, the function of accumulation, dealing with air energy consumption over a period, is also suggested. Lastly, some applications of the air power meter are suggested. By using the air power meter, the monitoring of air energy consumption and its distribution in factories becomes possible and easy. It is expected that the air power meter will play an important role in compressed-air energy-saving activities in factories in the near future.
Patent•
13 Sep 2001
TL;DR: In this paper, the authors proposed a server integrated energy meter in which each domestic energy meter has a server function of accessing to an external network and an internal network, and according to the control information from the network center, the internal device is controlled.
Abstract: PROBLEM TO BE SOLVED: To provide a server integrated energy meter in which each domestic energy meter has a server function of accessing to an external network and an internal network. SOLUTION: A communication end office 11 of the energy meter server 1 communicates information between a network center 3 and an ASP 4 through a public communication line 2. An application program transmitted from the ASP 4 is downloaded to a memory of the energy meter server 1, information is communicated with an internal device such as a gas meter 5 and a water meter 6 through the communication end office 11, the server function 10 transmits the result of reading the energy meter 13, and according to the control information from the network center 3, the internal device is controlled.
Patent•
16 Aug 2001
TL;DR: In this paper, a fast response sensor is mounted close to the thermal detector, in such a location that it senses a part of the incident beam to be measured, such that response characteristics of the fast response sensors are impressed on the output of the thermal sensor.
Abstract: An optical power meter using a thermal detector, with improved response time, in which a fast response sensor is mounted close to the thermal detector, in such a location that it senses a part of the incident beam to be measured. The output signal of the fast response sensor, and the output signal of the thermal detector are electronically combined, such that response characteristics of the fast response sensor are impressed on the output of the thermal detector, thus providing a power meter combining the power handling ability and the accuracy of the thermal detector with a response characteristic of the fast response sensor. This method of combining fast and slow response sensors is also applicable to other measurements, whether physical, chemical or biological, such as those of flow, velocity, temperature, pressure, electrical, electronic, magnetic, thermal, optical, radiative, dimensional or acoustic properties of a material or article.
Patent•
12 Dec 2001
TL;DR: In this article, an intelligent electricity quantity collector, comprising an intelligent electric quantity collection host machine installed at the outside of an electric meter and composed of a main control CPU, a watchdog circuit, a power down protection circuit, data memory, and a real-time clock circuit, is connected with the electric meter data collection head.
Abstract: The utility model relates to an intelligent electricity quantity collector, comprising an intelligent electric quantity collection host machine installed at the outside of an electric meter and composed of a main control CPU, a watchdog circuit, a power down protection circuit, a data memory, and a real-time clock circuit and an electric meter data collection head with an electric quantity signal collection sensor. The intelligent electric quantity collection host machine is connected with the electric meter data collection head. A hand held meter reader which can realize swap data with the intelligent electric quantity collection host machine is provided. The utility model can be installed without opening an electric meter, and new calibration of an electric meter can be avoided. The utility model has the advantages of simple installation, a real-time clock is provided, electric quantity data can be recorded at a definite time, electric quantity can be recorded according to time intervals a peak valley time, multiple path collection can be realized, multiple electric meter measurement can be realized, and the utility model has the advantages of economy and utility.
Patent•
16 Nov 2001
TL;DR: In this paper, a power damper for a high power laser capable of preventing the power dammer from melting damage due to concentration of laser power locally on a laser light receiver, a laser power meter thereof and a laser measuring method with using the power meter is proposed, where the laser beam is inclined against a center axis and shifted to the direction perpendicular to the center axis.
Abstract: PROBLEM TO BE SOLVED: To provide a power damper for a high power laser capable of preventing the power damper from melting damage due to concentration of laser power locally on a laser light receiver, a laser power meter thereof and a laser power measuring method with using the power meter SOLUTION: The power damper which makes a light receiver absorb the laser power of laser beam irradiated inside light receiver having a hollow rectangular parallelepiped shape by converting to heat has a light receiver position controller for introducing the laser beam inclined against a center axis and shifted to the direction perpendicular to the center axis In the laser power measuring method, the laser beams proceeding after multiple reflection on the inner plane of the rectangular parallelepiped is made not to overlap to each other in the longitudinal direction for 15 times return or more
Patent•
06 Nov 2001
TL;DR: In this article, an electricity meter (302) that includes a sensor unit (102A) for measuring current and voltage of a distribution wire (307) of an electricity distribution system is described.
Abstract: Methods and apparatus for implementing a technique for measuring electricity consumption as shown in Figure 3. In general, in one aspect, the technique provides an electricity meter (302) that includes a sensor unit (102A) for measuring current and voltage of a distribution wire (307) of an electricity distribution system. The meter also includes a processor (104) electrically connected to receive input from the sensor unit, the processor calculating power consumed and generating messages that report the calculated power consumed. The meter also includes a radio transmitter electrically connected to receive and transmit the messages generated from the processor. The meter also includes a housing (200) for the sensor unit, the processor, and the radio transmitter.
Patent•
28 Jun 2001
TL;DR: In this article, the authors present a method for transmitting the data as short message service (SMS) information in the communication network of a coded speech communication system, where the data consumption data are transmitted at predetermined intervals.
Abstract: The method involves transmitting the data as short message service (SMS) information in the communication network of a coded speech communication system. Preferably, the data is transmitted in a GSM network. Preferably, the consumption data are transmitted at predetermined intervals. Preferably, the data are coded before transmission. The data-processing unit may transmit control data to the meter to control switch elements of the meter. An Independent claim is included for a device for implementing the method.
Patent•
17 Jan 2001
TL;DR: The electronic power meter consists of main control circuit, electric energy metering circuit, leakage detecting circuit, overvoltage detecting circuit and acoustooptical alarm, counter, self-correction circuit and other parts as discussed by the authors.
Abstract: The electronic power meter consists of main control circuit, electric energy metering circuit, electric leakage detecting circuit, overvoltage detecting circuit, acoustooptical alarm, counter, self-correction circuit and other parts. The electronic power metal mates in possible to thansmit the watt-hout amout of user to power department through relay point in community and via radio or wired modefor remote count, calculation and control. The electronic power meter is reliable and easy to correct and its use can raise the working efficiency of relevant management department.
Patent•
25 Apr 2001
TL;DR: The utility model as mentioned in this paper is a metrological verification calibration instrument used for the verification and calibration of a testing device for an electric energy meter, which can be matched with a corresponding voltage source and a current source to form high-precision electric energy or electric current measuring standard to measure twelve parameters, such as threephase current, voltage, leakage magnetic field, etc.
Abstract: The utility model provides a metrological verification calibration instrument used for the metrological verification and the calibration of a testing device for an electric energy meter. The utility model comprises a high-accuracy current-voltage transducer I/V, a voltage-voltage transducer V/V, an amplifier for an instrument, a frequency counter, an analog to digital converter A/D, and a microcomputer. The utility model can be matched with a corresponding voltage source and a current source to form high-precision electric energy or electric current measuring standard to measure twelve parameters, such as three-phase current, voltage, leakage magnetic field, etc. in the working field of the testing device for the electric energy meter. The utility model has the advantages of high measuring precision and multiple functions.
15 May 2001
TL;DR: In this paper, a PC based energy management system associated with automatic meter reading and various load control functions for load management of industrial and commercial customers was developed. But the performance of the entire system has not been evaluated.
Abstract: This paper has developed a PC based energy management system associated with automatic meter reading and various load control functions for load management of industrial and commercial customers. Automatic meter reading configured by a programmable logic controller and power meter supports the function of recording 20 power parameters retrieved from an academic substation. Load control functions; which consist of demand control, timer control, cycling on/off control and direct control, are designed to effectively reduce peak load and to save electrical energy. Several types of software program coded by Visual Basic, PLC ladder language, and partial Diamond package, are designed to integrate all hardware equipment in energy management system. The entire system has been installed and successfully operated since October 1997. Statistical data collected from 1997/10 to 1999/10 indicate that the proposed effect for peak load cutting and energy saving may be justified.
Patent•
19 Jul 2001
TL;DR: In this article, an open-type electricity meter having an open type communication module is described. The module comprises a power line communication unit for separating a high-frequency power line communications signal from a power-line signal, a packet-connecting unit for transmitting the communication signal received into the power linecommunication unit according to frame type to a corresponding processing unit as data, and packets data from a higher processing unit to provide the same to the powerline communication unit; a low speed data processing unit being initialized to the packet connecting unit and installing a TCP/IP protocol engine to
Abstract: Disclosed an open type electricity meter having an open type communication
module. The module comprises a power line communication unit for separating a high
frequency power line communication signal from a power line signal; a packet
connecting unit for transmitting the communication signal received into the power line
communication unit according to frame type to a corresponding processing unit as data,
and packets data from a higher processing unit according to frame type to provide the
same to the power line communication unit; a low speed data processing unit being
connected to the packet connecting unit and installing a TCP/IP protocol engine to
perform a remote measurement communication; a high speed data processing unit for
performing a communication with the power line communication unit to transmit high
speed data to an indoor communication terminal and to transmit the high speed data to
an outdoor communication terminal through the packet connecting unit; and a telephony
processing unit connected to an external audio processing unit for coding an audio
signal from the audio processing unit to be provided to the packet connecting unit and
decoding the coded audio signal from the packet connecting unit to be provided to the
external audio processing unit. A low voltage distribution network can be applied as
communication and subscriber networks to enhance the efficiency of the data
communication.
Patent•
09 May 2001
TL;DR: The utility model as mentioned in this paper relates to a calibrated apparatus for an electric meter, comprising a calibrating apparatus, a power line, a signal line and a photometer head, which can very conveniently adopts an adsorption mode and is connected with the dial of the calibration apparatus.
Abstract: The utility model relates to a calibrating apparatus for an electric meter, comprising a calibrating apparatus, a power line, a signal line and a photometer head. A sucker is installed on the photometer head, and the utility model can very conveniently adopts an adsorption mode and is connected with the dial of the calibrating apparatus. The utility model has the advantages of easy use and firm adsorption. Work efficiency can be enhanced, and the utility model has the advantage of portability.
Patent•
28 Nov 2001
TL;DR: In this article, the authors propose a logic control device used for a combined test of the safety performance of household appliances, which belongs to the field of electric meter testing and controlling devices.
Abstract: The utility model relates to a logic control device used for a combined test of the safety performance of household appliances, which belongs to the field of electric meter testing and controlling devices. The device is composed of a master control device PLC, an external extension PLCC board, a relay control JR board, a front panel, a back panel, etc. The device can realize a manual or automatic test control of an earth resistor, an insulating resistor, leakage current, cold/hot state voltage resistance, voltage current power and low-voltage starting. When the utility model is externally matched with a printer or a PC computer, the utility model can print test data or upload the test data to the PC computer. The utility model can improve the reliability of a system, forms a test system very conveniently and realizes the safety test requirement of household appliances.
Patent•
26 Oct 2001
TL;DR: In this paper, the authors proposed an automatic meter reading system capable of sufficiently reducing costs by suppressing costs to be imposed on the meter reading of a measuring unit such as a power meter, especially, labor costs.
Abstract: PROBLEM TO BE SOLVED: To provide an automatic meter-reading system capable of sufficiently reducing costs by suppressing costs to be imposed on the meter-reading of a measuring unit such as a power meter, especially, labor costs. SOLUTION: A host device 11 requests the transmission of a measured value to a terminal station 24, and at the time of receiving the measured value from the terminal station 24, prepares claim information based on the received measured value, and transmits it to the terminal station 24. The terminal station 24 transfers bill information transmitted from the host device 11 to a portable telephone 5 of a user 4 in response to a request from the portable telephone 5. Therefore, it is possible to eliminate any labor to be imposed on the meter- reading work or any labor to be imposed on the mailing of a bill or receipt to the user. Therefore, it is possible to sufficiently reduce operation costs. COPYRIGHT: (C)2003,JPO
Patent•
19 Dec 2001
TL;DR: In this article, a current sensor for an apparatus includes a conductor having a slit and at least one Hall effect device inserted at least partially within the slit, and the Hall effect is configured to detect the pre-determined shape and generate an output.
Abstract: A current sensor for an apparatus includes a conductor having a slit and at least one Hall effect device inserted at least partially within the slit. The conductor is configured to generate a magnetic field having a pre-determined shape, and the Hall effect device is configured to detect the pre-determined shape and generate an output.
Patent•
11 Oct 2001
TL;DR: In this article, a satellite-mounted receiving antenna pattern acquisition problem is solved by using a saturation-time detection processing part to compute the saturated electric power flux density computed at each altered and set attitude of the satellite.
Abstract: PROBLEM TO BE SOLVED: To acquire a satellite-mounted receiving antenna pattern in an orbit with higher precision. SOLUTION: A satellite 1 whose attitude is controlled by an attitude control processing part 41 sends an electric power value and a helix current value outputted from a traveling-wave tube amplifier 27 according to an unmodulated RF signal 37 received by a receiving antenna 2 for communication from an earth station 3 as a telemetry signal 38 to the earth station 3 through a command-receiving/telemetry- transmitting antenna 31. A saturation-time detection processing part 42 once detecting both the sent output electric power value and helix current value of the traveling-wave tube amplifier 27 being in saturated states, computes the saturated electric power flux density of the traveling-wave tube amplifier 27 according to the transmitting electric power value of the RF signal measured by a power meter 11 for up-link power measurement at the point of time of the saturation detection. Then the pattern map of the communication receiving antenna 2 mounted on the satellite is computed according to the saturated electric power flux density computed at each altered and set attitude of the satellite 1. COPYRIGHT: (C)2003,JPO
Patent•
19 Jul 2001
TL;DR: In this article, an electricity meter comprises a current path and a calibration device for influencing a mean current flowing through the current path, and the calibration device comprises a switching device (10) which, with a ratio of conducting time to non-conducting time, influences the mean current.
Abstract: An electricity meter comprises a current path and a calibration device for influencing a mean current flowing through the current path. The calibration device comprises a switching device (10) which, with a ratio of conducting time to non-conducting time, influences the mean current in the current path.
Patent•
09 May 2001
TL;DR: In this article, an instantaneous acquiring and transmission system of remote passive data for non-electric meter is composed of nonelectric meter, data acquiring device, repeat box and data indicating box.
Abstract: An instantaneous acquiring and transmission system of remote passive data for non-electric meter is composed of non-electric meter, data acquiring device, repeat box and data indicating box. The pointer for meter is modified to be reflectable. The infrared ray from infrared tube acts on said pointer and then is reflected to infrared receiver. The data on graduation of meter is converted to electric signals, which are transmitted to data indicating box, where it is converted to digital information by logic judge circuit. Said information is then transmitted via modem, standard communication port and bus to computer or monitor system.
Patent•
06 Jun 2001
TL;DR: The utility model relates to an assemblage type electricity meter box assembly which comprises a plurality of electricity meter boxes for mounting electricity meters, and switch box bodies for mounting switch modules as discussed by the authors.
Abstract: The utility model relates to an assemblage type electricity meter box assembly which comprises a plurality of electricity meter box bodies for mounting electricity meters, and switch box bodies for mounting switch modules, wherein the electricity meter box bodies and the switch box bodies are orderly spliced into a whole by detachable connectors. The utility model is favorable for people to splice and combine previously according to the actual number of inhabitants on a floor, so that the utility model brings convenience to the field installation and construction.
Patent•
29 Aug 2001
TL;DR: In this article, the authors proposed a data treatment device for a user energy meter, which is characterized by an energy dosage counter of each user with a data collector, and an electric box of the data collector is provided with a computer processor; an output connection foot of the computer processor is linked and provided with an impedance setting device which is composed of an inductance L and a capacitor C which are connected in parallel and is connected in series with user loads R so as to transmit information which is obtained by the collector from power supply lines to the computer Processor by low voltage power network carrier
Abstract: The utility model relates to a data treatment device for a user energy meter, which is characterized in that an energy dosage counter of each user is provided with a data collector, and an electric box of the data collector is provided with a computer processor; an output connection foot of the computer processor is linked and provided with an impedance setting device which is composed of an inductance L and a capacitor C which are connected in parallel and is connected in series with user loads R so as to transmit information which is obtained by the data collector from power supply lines to the computer processor by low voltage power network carrier wave technique; then, the impedance setting device can transmit the information to the center of a distal electric pipe through the power supply lines so that the center of the electric pipe can monitor and control the use state of each user, such as electricity, water, natural gas, etc. in a remote distance mode and act an automatic fee collecting announcer. The utility model has the advantages of high reliability, low cost, convenient use, and strong adaptability.