CN101359006A - Intelligent power utilization monitoring device - Google Patents
Intelligent power utilization monitoring device Download PDFInfo
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- CN101359006A CN101359006A CNA2008101519513A CN200810151951A CN101359006A CN 101359006 A CN101359006 A CN 101359006A CN A2008101519513 A CNA2008101519513 A CN A2008101519513A CN 200810151951 A CN200810151951 A CN 200810151951A CN 101359006 A CN101359006 A CN 101359006A
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Abstract
The present invention relates to an intelligent electricity consumption monitoring device and comprises a casing, a current transformer, a connecting terminal and a control circuit which is arranged on the printed board; the control circuit is partially provided with an electric energy measuring circuit connected with a single chip; the single chip is respectively connected with a display, an infrared optical interface circuit, a communication interface, a memory, keys and a clock circuit; the power supply circuit is connected with each circuit unit to provide the working power; and the clock circuit is equipped with a backup battery. The device is characterized in that the detection circuit with the power supply signals is connected with the single chip to identify the diesel engine power generating signals and the commercial power supplying signals. The device can not only measure the commercial power supply, but also can measure the diesel engine power supply. And the device realizes the integrated measurement monitoring, makes full use of the existing resources, greatly saves the investment in the telecommunications base station and the engine room, effectively improves the working efficiency of the equipment, and provides scientific basis for evaluating the performance of the power-saving equipment of the base station through the measurement of a plurality of parameters of the power.
Description
Technical field
The present invention relates to electricity consumption monitoring equipment, particularly a kind of telecommunications or the multichannel electric energy metrical of other industry base station and machine room and intelligent power utilization monitoring device of electric parameter measurement of being applicable to.
Background technology
At present, along with the continuous development and perfection of mobile communications network, base station number is more and more, and it is more and more wider to distribute, and as the important content in the BTS management, the management of power use is along with base station number is on the increase, and management difficulty is increasing.
The current subject matter that exists is summarized as follows:
1, the base station, city is many near sub-district or the factories and miness power taking, and the IC-card electric energy meter is adopted in the part base station, the electricity charge that prestore, in the card out of funds after, force to have a power failure.In the face of the base station of One's name is legion, the mobile worker need pay close attention to electricity charge situation constantly, can take place unavoidably to renew the electricity charge and cause power-off of base station because of forgeing.
2, part base station ammeter is installed in outside the base station, some in addition be installed in the head of the mast, check the power consumption inconvenience; Take place by situations such as power stealings easily simultaneously.
3, after base station construction was finished substantially, the electricity charge occupied suitable proportion in the operation cost of base station, and commmunication company can not grasp overall electricity consumption situation at present in real time, lacked the statistics and the measurement means of science.
4, along with energy-saving device is constantly adopted by the base station, commmunication company can not verify the power savings of energy-saving device at present in real time.
When 5, having a power failure, need maintenance company to be responsible for generating, guarantee the base station operation, but can't examine, be unfavorable for cost control the generated energy of maintenance company in the base station.
6, current telecommunication department will address the above problem, and two electric power meters can only be installed, electric power meter metering mains-supplied electric energy, and another electric power meter metering hydro power generation electric energy can not efficent use of resources, and uses inconvenience.
In view of the above problems, how effectively utilizing existing resource, be convenient to enterprise and use and manage, for market provides a kind of intelligent power utilization monitoring device, will be one of the current urgency in this field problem to be solved.
Summary of the invention
The objective of the invention is to overcome above-mentioned weak point, a kind of reasonable in design, dependable performance, obvious results intelligent power utilization monitoring device are provided; Measure and monitor through electric energy and the electrical parameter of this intelligent power utilization monitoring device with an intelligent power utilization monitoring device to base station supply line.When base station power is multichannel civil power or multichannel hydro power generation, according to hydro power generation signal and mains-supplied characteristics of signals, identify the source of power supply, the multiple-way supply power supply is carried out electric energy metrical and parameter measurement respectively, and the electrical measurement data are uploaded in demonstration and communication.
The technical solution adopted in the present invention is for achieving the above object: a kind of intelligent power utilization monitoring device comprises the control circuit part that casing, current transformer, connection terminal and printed board are provided with; Control circuit partly is provided with ic for energy metering and is connected with single-chip microcomputer, and described single-chip microcomputer is connected with display, infrared optics interface circuit, communication interface, storer, button, clock circuit respectively; Described power circuit is connected with above-mentioned each circuit unit provides working power, and clock circuit sets backup battery; It is characterized in that being provided with the power supply signal testing circuit and be connected with single-chip microcomputer, identification detects hydro power generation signal and mains-supplied signal; At first outside three phase supply power supply inserts this intelligent power utilization monitoring device, and promptly three-phase supply passes through current transformer respectively, from intelligent power utilization monitoring device output, powers to base station supply line again; Intelligent power utilization monitoring device is input to ic for energy metering with the voltage of three-phase supply through attenuation network, and the output signal of three current transformers is input to ic for energy metering through current sampling circuit; The electric energy computation chip that described ic for energy metering adopts the metering that realizes the meritorious and reactive energy of supply line, power factor, peak power, three-phase voltage and three-phase current are measured; Described single chip circuit is gathered electric quantity signal, and according to the classification of hydro power generation signal and mains-supplied characteristics of signals identification externally fed power supply, electric quantity data is carried out respectively adding up accordingly and preserving.
The invention has the beneficial effects as follows: with an intelligent power utilization monitoring device, metering machine room (base station) mains-supplied electric energy, measure the hydro power generation electric energy simultaneously, only reached the effect that two electric power meters are installed with an intelligent power utilization monitoring device, save the equipment investment of telecomm base station and machine room, increased the performance of enterprises.By a novel digital intelligent power utilization monitoring device is installed in the base station, it is inserted present machine room (base station) power and environmental monitoring system, or directly be connected with computer system, promptly can realize the electricity consumption data in real time of base station is sent back Surveillance center and shows that on intelligent power utilization monitoring device the supvr can grasp the electricity consumption situation of base station in real time in Surveillance center simultaneously.By daemon software analysis and deal with data, provide the data of science for analyzing the base station operation cost, avoided artificial factor, improved work efficiency effectively; And provide the foundation of science for the performance of assessing in the future base station electricity saving equipment.
This intelligent power utilization monitoring device is gathered the correlation parameter of the quality of power supply fully by the GB requirement, have the reliability that works long hours, stronger execute-in-place and communication function, has the ability of non-volatile recording storage data simultaneously.This intelligent power utilization monitoring device effectively utilizes device resource, brings great convenience to the user, and the present invention is simple in structure, and is reasonable in design, and integrated design reduces cost; Use very extensively, market outlook are wide.
Description of drawings
Fig. 1 is apparatus of the present invention circuit connection structure block diagram,
Fig. 2 is apparatus of the present invention wiring block diagram,
Fig. 3 is apparatus of the present invention surface structure synoptic diagram;
Fig. 4 is apparatus of the present invention inner structure synoptic diagram.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, to details are as follows according to embodiment provided by the invention:
As shown in Figure 1 and Figure 2, a kind of intelligent power utilization monitoring device comprises the control circuit part that casing, current transformer, connection terminal and printed board are provided with; Control circuit partly is provided with ic for energy metering and is connected with single-chip microcomputer, and described single-chip microcomputer is connected with display, infrared optics interface circuit, communication interface, storer, button, clock circuit respectively; Described power circuit is connected with above-mentioned each circuit unit provides working power, and clock circuit sets backup battery; It is characterized in that being provided with the power supply signal testing circuit and be connected with single-chip microcomputer, identification detects hydro power generation signal and mains-supplied signal; At first outside three phase supply power supply inserts this intelligent power utilization monitoring device, and promptly A, B, C three-phase supply pass through current transformer respectively, from intelligent power utilization monitoring device output, powers to base station supply line again; Intelligent power utilization monitoring device is input to ic for energy metering with the voltage of three-phase supply through attenuation network, and the output signal of three current transformers is input to ic for energy metering through current sampling circuit; The electric energy computation chip that described ic for energy metering adopts the metering that realizes the meritorious and reactive energy of supply line, power factor, peak power, three-phase voltage and three-phase current are measured, electric energy computation chip is connected with three light emitting diodes as pilot lamp; Electric energy computation chip is connected with single chip circuit simultaneously, and described single chip circuit is gathered electric quantity signal, and according to hydro power generation signal and mains-supplied characteristics of signals, the classification of identification externally fed power supply carries out respectively adding up accordingly and preserving to electric quantity data.
The power supply signal testing circuit that described single-chip microcomputer connects is made as the hydro power generation signal deteching circuit, mains-supplied signal deteching circuit two-way is discerned respectively and detected hydro power generation signal and mains-supplied signal; Or the power supply signal testing circuit is connected with single-chip microcomputer by high-low level identification detection hydro power generation signal and mains-supplied signal.
The hydro power generation signal deteching circuit that described power supply signal testing circuit comprises, mains-supplied signal deteching circuit correspondence are made as two-way or more than the two-way.
The signal that described power supply signal testing circuit is detected is one of switching signal, voltage signal, current signal.
Described display circulation shows or shows according to the button stepping electrical parameter of mains-supplied and hydro power generation; The infrared optics interface circuit is used for and the communication of band infrared interface hander, and hander carries out the parameter setting and copies and accepts data intelligent power utilization monitoring device; Communication interface is connected with machine room (base station) power and environmental monitoring system by RS232, RS485, RS422 bus, or the direct and supervisory system communication by the GSM network, finishes the parameter setting of intelligent power utilization monitoring device and copies and accepts data; Storer is preserved the metering and the measurement parameter of mains-supplied and hydro power generation respectively; Key circuit is realized the operator checks intelligent power utilization monitoring device by button parameter setting and electrical measurement data; Clock circuit deadline and date calculate; Mains-supplied and hydro power generation input signal are input to single chip circuit after conversion process; Power circuit carries out voltage transformation and rectification, voltage stabilizing with the externally fed power supply, provides power supply to each element circuit in the intelligent power utilization monitoring device; When the line powering power interruption, backup battery provides power supply to clock circuit.
As shown in Figure 2, the A phase power supply of externally fed circuit, the 1. end of access intelligent power utilization monitoring device, the current transformer in this device is from 3. end output; The B phase power supply of externally fed circuit, the 4. end of access intelligent power utilization monitoring device, the current transformer in this device is from 6. end output; The C phase power supply of externally fed circuit, the 7. end of access intelligent power utilization monitoring device, the current transformer in this device is from 9. end output; If the three-phase and four-line power supply mode, the middle phase line of externally fed circuit, the 10. end of access intelligent power utilization monitoring device.The mains-supplied identification signal inserts (11) and (12) end of intelligent power utilization monitoring device; The hydro power generation identification signal inserts (13) and (14) end of intelligent power utilization monitoring device; The connection of RS422 inserts (15), (16), (17), (18) end of intelligent power utilization monitoring device.
Insert intelligent power utilization monitoring device 1., 4., 7. supply voltage, be input to ic for energy metering through attenuation network, simultaneously, the output signal of each phase current mutual inductor also is input to ic for energy metering through current sampling circuit; Ic for energy metering is finished the measurement of active energy, reactive energy, power factor, each phase voltage, each phase current, directly exports active energy pulse CF1, reactive energy pulse CF2 and inversion signal REVP whether, the driving LED light emitting diode.Single-chip microcomputer reads the value of active energy, reactive energy, power factor, each phase voltage, each phase current from ic for energy metering, and carries out corresponding calculating; It is effective that single-chip microcomputer detects the mains-supplied identification signal, the aforementioned calculation value is saved in city's power consumption relative data area, and shows; If it is effective to detect the hydro power generation identification signal, the aforementioned calculation value is saved in the dynamo-electric amount of oil relative data area, and shows.By the infrared optics interface circuit, the parameter of intelligent power utilization monitoring device can be set and read measurement data with band infrared interface hander.Be connected by RS232, RS422 or RS485 interface and machine room (base station) power and environmental monitoring system or other computer control system, the parameter of intelligent power utilization monitoring device be set and read measurement data.Storer is preserved the electric energy measurement data, and when power cut-off, does not also lose.Button operation can be checked the electricity consumption monitoring device in proper order on display parameter and measurement data.Clock circuit deadline and calendar function when power cut-off, provide power supply by backup battery.Power circuit with the electricity consumption monitoring device 1., 4., 7. three-phase supply input through the transformer conversion, rectifying and voltage-stabilizing offers each element circuit voltage more earlier.
As shown in Figure 3, Figure 4, the casing that comprises of apparatus of the present invention structure division is made of loam cake 8, drain pan 4, terminal box 7 and terminal lid 11; Be provided with current transformer 10 in the casing, wave filter 6 and printed board assembly 5; Printed board assembly 5 is provided with LCD 1, infrared pilot lamp 2, keyswitch 3; On terminal box 7, be provided with lead sealing 12; At loam cake 8 installed inside panels 9.
Intelligent power utilization monitoring device is realized major function:
1, multichannel electric parameter measurement
(1) electric parameter measurement during mains-supplied
Meritorious electric quantity metering, the capacity of idle power metering, power factor, peak power,, measurements such as three-phase voltage, three-phase current.
Electric parameter measurement when (2) oily machine is powered
Meritorious electric quantity metering, the capacity of idle power metering, power factor, peak power,, measurements such as three-phase voltage, three-phase current.
2, monitoring function
An intelligent power utilization monitoring device measures the civil power power consumption when mains-supplied; At mains failure, during oil start, metering hydro power generation amount accomplishes that an intelligent power utilization monitoring device finishes the multiple electric quantity metering and the power monitoring function of machine room.
(1) the meritorious electric quantity metering of base station mains-supplied is as the reference frame to the electric system charge calculation.
(2) when the mains failure of base station, the electric weight of automatic gauge hydro power generation is for the clearing with maintenance company provide accurate data.
(3) whether normal the metering of base station power consumption total amount as the Monitoring Data of equipment electricity consumption in the base station.
(4) power factor and the capacity of idle power of real-time metering circuit are to weigh plant efficiency height in the base station, reduce the power consumption and electricity charge expenditure, and valid data are provided.
(5) can measure and preserve maximum electric power, when the base station equipment multiplexing electric abnormality, can pinpoint the problems early.
(6) measure three phase supply voltage in real time,, send warning message when phase shortage or overtension or low excessively.
(7) measure the three phase supply electric current in real time, excessive or three-phase current is serious when uneven when supply current, sends warning message.
3, data communication protocol
Intelligent power utilization monitoring device is supported the front end intelligent equipment protocol of " communication bureau's (station) power supply, air-conditioning and environment centralized supervision management system ", is connected with machine room (base station) power and environmental monitoring system by RS232, RS422 or RS485 interface.
4, the scene is provided with and copies and accepts data
Can use band infrared interface hander intelligent power utilization monitoring device to be carried out the initial truth of a matter (power office's ammeter reading) setting by the infrared optics interface, like this, meritorious electric quantity metering data and power office's ammeter reading of intelligent power utilization monitoring device are consistent, and are convenient to the electric quantity data settlement management.In addition also can be by every data of band infrared interface hander copy reading intelligent power utilization monitoring device.
5, data are preserved
Data such as the meritorious electric quantity metering of mains-supplied and hydro power generation, capacity of idle power metering and maximum electric power are not lost when outage, and data can be preserved more than 10 years.
Above-mentioned with reference to the detailed description of embodiment to this intelligent power utilization monitoring device, be illustrative rather than determinate; Therefore in the variation and the modification that do not break away under the general plotting of the present invention, should belong within protection scope of the present invention.
Claims (4)
1, a kind of intelligent power utilization monitoring device comprises the control circuit part that casing, current transformer, connection terminal and printed board are provided with; Control circuit partly is provided with ic for energy metering and is connected with single-chip microcomputer, and described single-chip microcomputer is connected with display, infrared optics interface circuit, communication interface, storer, button, clock circuit respectively; Described power circuit is connected with above-mentioned each circuit unit provides working power, and clock circuit sets backup battery; It is characterized in that being provided with the power supply signal testing circuit and be connected with single-chip microcomputer, identification detects hydro power generation signal and mains-supplied signal; At first outside three phase supply power supply inserts this intelligent power utilization monitoring device, and promptly three-phase supply passes through current transformer respectively, from intelligent power utilization monitoring device output, powers to base station supply line again; Intelligent power utilization monitoring device is input to ic for energy metering with the voltage of three-phase supply through attenuation network, and the output signal of three current transformers is input to ic for energy metering through current sampling circuit; The electric energy computation chip that described ic for energy metering adopts the metering that realizes the meritorious and reactive energy of supply line, power factor, peak power, three-phase voltage and three-phase current are measured; Described single chip circuit is gathered electric quantity signal, and according to the classification of hydro power generation signal and mains-supplied characteristics of signals identification externally fed power supply, electric quantity data is carried out respectively adding up accordingly and preserving.
2, intelligent power utilization monitoring device according to claim 1 is characterized in that the power supply signal testing circuit that described single-chip microcomputer connects is made as the hydro power generation signal deteching circuit, mains-supplied signal deteching circuit two-way is discerned respectively and detected hydro power generation signal and mains-supplied signal; Or the power supply signal testing circuit is connected with single-chip microcomputer by high-low level identification detection hydro power generation signal and mains-supplied signal.
3, intelligent power utilization monitoring device according to claim 2 is characterized in that hydro power generation signal deteching circuit, mains-supplied signal deteching circuit correspondence that described power supply signal testing circuit comprises are made as two-way or more than the two-way.
4,, it is characterized in that the signal that described power supply signal testing circuit is detected is one of switching signal, voltage signal, current signal according to claim 1 or 2 or 3 described intelligent power utilization monitoring devices.
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| CNA2008101519513A CN101359006A (en) | 2008-09-28 | 2008-09-28 | Intelligent power utilization monitoring device |
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| CNA2008101519513A CN101359006A (en) | 2008-09-28 | 2008-09-28 | Intelligent power utilization monitoring device |
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| CN101907655A (en) * | 2010-07-07 | 2010-12-08 | 江苏斯菲尔电气股份有限公司 | Electric energy metering instrument for multi-power supply system |
| CN101968504A (en) * | 2010-09-16 | 2011-02-09 | 浙江永昌仪表有限公司 | Electricity stealing detecting comparison meter, power supply network capable of detecting electricity stealing and electricity stealing detection method |
| CN102495279A (en) * | 2011-12-23 | 2012-06-13 | 无锡博欧电子科技有限公司 | Metering device for multipath alternating current electric quantities |
| CN102539859A (en) * | 2011-12-31 | 2012-07-04 | 成都国腾实业集团有限公司 | Anti-electricity-stealing detecting system and method for communication base stations |
| CN101750561B (en) * | 2010-01-08 | 2012-10-03 | 江苏大学 | Electrical energy quality monitoring and evaluating system |
| CN102789753A (en) * | 2011-05-16 | 2012-11-21 | 福建富顺电子有限公司 | Light-emitting diode (LED) sport competition countdown displayer capable of dimming |
| CN103135503A (en) * | 2011-11-22 | 2013-06-05 | 江苏省紫光智能系统有限公司 | Generator room intelligent physical union blending monitoring system and monitoring method thereof |
| CN103852634A (en) * | 2012-12-06 | 2014-06-11 | 苏州工业园区新宏博通讯科技有限公司 | Electric supply oil engine electric energy meter |
| CN104122824A (en) * | 2014-07-28 | 2014-10-29 | 四川中智恒源电气有限公司 | Intelligent industrial tablet management machine |
| CN104122825A (en) * | 2014-07-28 | 2014-10-29 | 四川中智恒源电气有限公司 | Intelligent electric quantity sampling device |
| CN104155495A (en) * | 2013-05-13 | 2014-11-19 | 苏州工业园区新宏博通讯科技有限公司 | Commercial power and oil engine power meter |
| CN104251927A (en) * | 2013-06-28 | 2014-12-31 | 苏州工业园区新宏博通讯科技有限公司 | Oil machine mains electricity meter software implementing method and oil machine mains electricity meter |
| CN104316884A (en) * | 2014-11-04 | 2015-01-28 | 张海呈 | Oil engine electricity generation monitoring terminal based on FFT spectral analysis |
| CN104620115A (en) * | 2012-05-13 | 2015-05-13 | 格里德2020公司 | Power monitoring system and method |
| CN104698241A (en) * | 2015-04-05 | 2015-06-10 | 黄燕云 | Intelligent electric meter |
| CN105445544A (en) * | 2015-12-15 | 2016-03-30 | 中国移动通信集团安徽有限公司 | Power supply quantity subentry metering system and method |
| CN105699765A (en) * | 2016-03-28 | 2016-06-22 | 无锡智谷锐拓技术服务有限公司 | Intelligent electric energy meter for detecting door-and-window state of staircase |
| CN108811306A (en) * | 2018-06-30 | 2018-11-13 | 宁波三星医疗电气股份有限公司 | A kind of novel electric power terminal |
| CN108918995A (en) * | 2018-06-12 | 2018-11-30 | 六盘水金星机电设备有限公司 | A kind of portable three-phase power load monitor |
| CN109188070A (en) * | 2018-09-21 | 2019-01-11 | 广东嘉同达科技有限公司 | A kind of monthly power factor prediction technique and system |
| CN111537792A (en) * | 2020-05-19 | 2020-08-14 | 广东电网有限责任公司东莞供电局 | Multi-power-supply electricity metering device and method |
| CN112994240A (en) * | 2021-03-04 | 2021-06-18 | 湖北泰和电气有限公司 | Power supply monitoring equipment |
| CN113138316A (en) * | 2020-05-19 | 2021-07-20 | 吴沁莹 | User side electric energy data monitoring device and method |
| CN117269658A (en) * | 2023-11-23 | 2023-12-22 | 江苏安世朗智能科技有限公司 | Intelligent electricity consumption monitor capable of accurately collecting parameters of each line and installation method |
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2008
- 2008-09-28 CN CNA2008101519513A patent/CN101359006A/en active Pending
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| CN101750561B (en) * | 2010-01-08 | 2012-10-03 | 江苏大学 | Electrical energy quality monitoring and evaluating system |
| CN101907655A (en) * | 2010-07-07 | 2010-12-08 | 江苏斯菲尔电气股份有限公司 | Electric energy metering instrument for multi-power supply system |
| CN101968504A (en) * | 2010-09-16 | 2011-02-09 | 浙江永昌仪表有限公司 | Electricity stealing detecting comparison meter, power supply network capable of detecting electricity stealing and electricity stealing detection method |
| CN102789753A (en) * | 2011-05-16 | 2012-11-21 | 福建富顺电子有限公司 | Light-emitting diode (LED) sport competition countdown displayer capable of dimming |
| CN103135503A (en) * | 2011-11-22 | 2013-06-05 | 江苏省紫光智能系统有限公司 | Generator room intelligent physical union blending monitoring system and monitoring method thereof |
| CN102495279A (en) * | 2011-12-23 | 2012-06-13 | 无锡博欧电子科技有限公司 | Metering device for multipath alternating current electric quantities |
| CN102539859A (en) * | 2011-12-31 | 2012-07-04 | 成都国腾实业集团有限公司 | Anti-electricity-stealing detecting system and method for communication base stations |
| CN104620115A (en) * | 2012-05-13 | 2015-05-13 | 格里德2020公司 | Power monitoring system and method |
| CN103852634A (en) * | 2012-12-06 | 2014-06-11 | 苏州工业园区新宏博通讯科技有限公司 | Electric supply oil engine electric energy meter |
| CN104155495A (en) * | 2013-05-13 | 2014-11-19 | 苏州工业园区新宏博通讯科技有限公司 | Commercial power and oil engine power meter |
| CN104251927A (en) * | 2013-06-28 | 2014-12-31 | 苏州工业园区新宏博通讯科技有限公司 | Oil machine mains electricity meter software implementing method and oil machine mains electricity meter |
| CN104122824A (en) * | 2014-07-28 | 2014-10-29 | 四川中智恒源电气有限公司 | Intelligent industrial tablet management machine |
| CN104122825A (en) * | 2014-07-28 | 2014-10-29 | 四川中智恒源电气有限公司 | Intelligent electric quantity sampling device |
| CN104316884A (en) * | 2014-11-04 | 2015-01-28 | 张海呈 | Oil engine electricity generation monitoring terminal based on FFT spectral analysis |
| CN104698241A (en) * | 2015-04-05 | 2015-06-10 | 黄燕云 | Intelligent electric meter |
| CN104698241B (en) * | 2015-04-05 | 2017-05-10 | 国网山东省电力公司东营市垦利区供电公司 | Intelligent electric meter |
| CN105445544A (en) * | 2015-12-15 | 2016-03-30 | 中国移动通信集团安徽有限公司 | Power supply quantity subentry metering system and method |
| CN105699765A (en) * | 2016-03-28 | 2016-06-22 | 无锡智谷锐拓技术服务有限公司 | Intelligent electric energy meter for detecting door-and-window state of staircase |
| CN108918995A (en) * | 2018-06-12 | 2018-11-30 | 六盘水金星机电设备有限公司 | A kind of portable three-phase power load monitor |
| CN108811306A (en) * | 2018-06-30 | 2018-11-13 | 宁波三星医疗电气股份有限公司 | A kind of novel electric power terminal |
| CN109188070A (en) * | 2018-09-21 | 2019-01-11 | 广东嘉同达科技有限公司 | A kind of monthly power factor prediction technique and system |
| CN109188070B (en) * | 2018-09-21 | 2020-11-20 | 广东嘉盛达科技有限公司 | Monthly power factor prediction method and system |
| CN111537792A (en) * | 2020-05-19 | 2020-08-14 | 广东电网有限责任公司东莞供电局 | Multi-power-supply electricity metering device and method |
| CN113138316A (en) * | 2020-05-19 | 2021-07-20 | 吴沁莹 | User side electric energy data monitoring device and method |
| CN112994240A (en) * | 2021-03-04 | 2021-06-18 | 湖北泰和电气有限公司 | Power supply monitoring equipment |
| CN117269658A (en) * | 2023-11-23 | 2023-12-22 | 江苏安世朗智能科技有限公司 | Intelligent electricity consumption monitor capable of accurately collecting parameters of each line and installation method |
| CN117269658B (en) * | 2023-11-23 | 2024-02-02 | 江苏安世朗智能科技有限公司 | Intelligent electricity consumption monitor capable of accurately collecting parameters of each line and installation method |
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