CN2267462Y - Intelligent carrier wave data sampling device for electric meter - Google Patents

Intelligent carrier wave data sampling device for electric meter Download PDF

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Publication number
CN2267462Y
CN2267462Y CN 96202199 CN96202199U CN2267462Y CN 2267462 Y CN2267462 Y CN 2267462Y CN 96202199 CN96202199 CN 96202199 CN 96202199 U CN96202199 U CN 96202199U CN 2267462 Y CN2267462 Y CN 2267462Y
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carrier wave
chip microcomputer
circuit
collector
transtation mission
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Expired - Fee Related
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CN 96202199
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Chinese (zh)
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周淼森
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Abstract

The utility model relates to an intelligent carrier wave meter recording device used for automatically recording the electric power consumption for an electric energy meter, which has a collector which can collect the reading of the electric energy meter and a collecting center for receiving the data of the collector. In order to automatically record the electric power consumption of the electric energy meter at any time, the utility model is respectively provided with a carrier wave receiving circuit and a carrier wave transmitting circuit at collector and the collecting center. Compared with the prior art, the utility model has the advantages that the interference immunity is good, the condition of electric power consumption is mastered at any time, the value is kept when the electricity is cut off, etc.

Description

Intelligence carrier meter reading device
The utility model relates to a kind of intelligent carrier meter reading device that the electric energy meter power consumption is made a copy of automatically that is used for.
In the utility model patent instructions of publishing on October 26th, 1994, disclosing a kind of patent No. is 2L94200010.2 " a kind of contact watt-hour meter automatic meter number recorder ", it is mainly by photoelectric sensor, counter, digital collection and resident circuit and meter reading instrument constitute, photoelectric sensor is converted into pulse number with mechanical power energy meter rotating disk rotating cycle, pulse signal causes that by the input of counter clock input end counter adds up, simultaneously, digital collection and resident circuit, electric degree number under the counter records is stored, when checking meter, meter reading instrument is connected digital collection and resident circuit corresponding signal line, and meter reading instrument can automatically read in the electric energy meter reading.Its weak point, digital collection and resident circuit adopt powered battery, when powered battery is not enough, can not guarantees the data preservation, and when checking meter, also need to check meter from house to house, can not realize the robotization of the process of checking meter.
The purpose of this utility model is a kind of intelligent carrier meter reading instrument apparatus that can make a copy of the electric energy meter power consumption at any time automatically of design.
The utlity model has one and gather the collector of electric energy meter reading and the collection center of reception collector data, collector is attached in the electric energy meter, and it contains infrared photoelectric sensor, single-chip microcomputer.The rotating disk rotating cycle of mechanical power energy meter is converted into pulse number by photoelectric sensor, is input to by single-chip microcomputer sampling input end (RTCC) then and stores among the single-chip microcomputer IC7 and accumulative total; Also contain a single-chip microcomputer IC13 in the collection in the heart, single-chip microcomputer IC13 is connected with computing machine by the RS-232 interface chip.
In order to achieve the above object, the utility model also respectively is provided with carrier wave receiving circuit and carrier wave transtation mission circuit in the heart at collector with in gathering, the output terminal of the input end of carrier wave receiving circuit and carrier wave transtation mission circuit is connected with line of electric force, carrier wave receiving circuit 1 and 1 ' output terminal respectively with single-chip microcomputer IC7, the data input pin of IC13 (PA0) is connected with (PA1.0), carrier wave transtation mission circuit 2 and 2 ' input end respectively with single-chip microcomputer IC7, the data output end of IC13 (PA1) is connected with (PA1.1), carrier wave transtation mission circuit 2 and 2 ' the work control end respectively with single-chip microcomputer IC7, conversion and control end (PA2) among the IC13 is connected with (PA1.2).
Need copy the number of degrees of a certain electric energy meter when power department, when being the data of certain collector, owing to there is the address code of each collector that the collection center comprised in the computing machine, send instruction by computing machine and pass through the RS-232 interface chip to the collection center, require to gather the data of certain collector, in the collection in the heart single-chip microcomputer IC13 conversion and control end (PA1.2) by carrier wave transtation mission circuit 2 ' work control end R '/T ' to carrier wave transtation mission circuit 2 ' provide high level signal, make carrier wave transtation mission circuit 2 ' work, at this moment, single-chip microcomputer IC13 is the command signal of computing machine, by data output end T ' .D ' (PA1.1) by carrier wave transtation mission circuit input end be input to carrier wave transtation mission circuit 2 ', through carrier modulation, frequency division, power amplification, output to line of electric force then, enter carrier wave receiving circuit 1 input end in the collector by power line transmission, mixing through carrier wave receiving circuit 1, filtering, detection, and low frequency amplifies, output signal sends the data input pin R of single-chip microcomputer IC7 to, D (PA0), when single-chip microcomputer IC7 receives with this address code conforms to instruction, provide high level signal by conversion and control end R/T (PA2) to carrier wave transtation mission circuit 2, make the work of carrier wave transtation mission circuit, simultaneously, single-chip microcomputer IC7 inputs to carrier wave transtation mission circuit 2 to electric energy meter accumulative total and self address code of storing by data output end T.D (PA1), carrier modulation through carrier wave transtation mission circuit 2, frequency division, power amplification sends data by line of electric force to the collection center.The collection center is receiving data, through carrier wave receiving circuit 1 ' mixing, filtering, amplitude limit amplification, detection and low frequency amplify, output signal sends single-chip microcomputer IC13 to, through the RS-232 interface chip, data are mail to Computer Processing, reach the purpose that to make a copy of the electric energy meter power consumption at any time automatically, realized the robotization of the whole process of checking meter.
Be described in further detail below in conjunction with one, two pairs of the utility model of drawings and Examples.
Fig. 1 is the circuit block diagram of embodiment one in the utility model.
Fig. 2 is the circuit block diagram of embodiment two in the utility model.
Fig. 3 is a carrier wave transtation mission circuit block scheme among the embodiment one in the utility model.
Fig. 4 is the collector circuit theory diagrams among the utility model embodiment one.
Fig. 5 is the collection central circuit schematic diagram among the utility model embodiment one.
Fig. 6 is the collector circuit theory diagrams among the utility model embodiment two.
Fig. 7 is the collection central circuit schematic diagram among the utility model embodiment two.
Embodiment one
As Fig. 1, shown in Figure 4, present embodiment one gathers the collector of electric energy meter reading by one and the collection center of reception collector data is formed, and wherein reception, the transtation mission circuit at the collector and the center of collection are made of separate module.Collector is made of photoelectric sensor, single-chip microcomputer IC7, carrier wave receiving circuit IC1, carrier wave transtation mission circuit (IC2, IC3, IC4), relay J 1, input isolating transformer ZP1, carrier frequency bandpass filter, wherein, photoelectric sensor is converted into pulse number with the rotating disk rotating cycle of mechanical power energy meter, is input to by single-chip microcomputer sampling input end (RTCC) then and stores among the single-chip microcomputer IC7 and accumulative total; Putting detuner IC1 in the frequency modulation that the carrier wave receiving circuit is made up of CMOS or PMOS integrated circuit constitutes; As shown in Figure 3, the carrier wave transtation mission circuit is made of modulator G1 and carrier-frequency oscilaltor IC2, tri-frequency divider IC3, a power amplifier IC4 who is made up of CMOS or PMOS integrated circuit, and the carrier frequency bandpass filter is made of capacitor C 1 and telefault L1 series connection.
In the carrier wave receiving circuit, the mixing input end of IC1 is connected by the secondary coil centre tap of capacitor C 3 with input isolating transformer ZP1 on the one hand, a secondary coil two ends capacitor C 2 in parallel, isolating transformer ZP1 primary coil one end is connected with the line of electric force zero line, the other end is connected with relay J 1 normally opened contact, and the center-side of relay J 1 is connected with the line of electric force live wire by carrier frequency bandpass filter C1L1; On the other hand, the mixing output terminal of IC1 is connected with I.F.T. ZP2 primary coil centre tap by capacitor C 4, its coil two ends shunt capacitance C5, wherein an end joins with+5V power supply and links to each other with ZP2 level of transformer one end, the secondary coil other end is connected with the amplitude limit input end of IC1 by capacitor C 6, the two decoupling end shunt capacitance C7 of IC1, and at one end by capacitor C 8 ground connection, the end of the amplitude limit output termination seisline circle L2 of IC1, two ends shunt capacitance C9, another termination+5V power supply, the detuner output terminal connecting resistance R1 of IC1, resistance R 1 another termination capacitor C 10, C11, capacitor C 10 other end ground connection, the low input end of putting of capacitor C 11 another terminations is lowly put output terminal and is connected with the data input pin R.D (PA0) of single-chip microcomputer IC7.
In the carrier wave transtation mission circuit, the grid of field effect transistor G1 in the modulator is connected with single-chip microcomputer IC7 data output end T.D (PA1), source ground, drain electrode connects capacitor C 12, the other end of capacitor C 12: 1. the Sheffer stroke gate output terminal with the IC2 carrier-frequency oscilaltor connects, and 2. joins with capacitor C 13, capacitor C 13 other end ground connection, 3. be connected with IC3 tri-frequency divider input end, 4. be connected, 5. be connected with feedback resistance R2 with crystalline quartz oscillator SJ1; The Sheffer stroke gate input end of IC2 carrier-frequency oscilaltor: 1. be connected, 2. join, 3. join capacitor C 14 other end ground connection with capacitor C 14 with the crystalline quartz oscillator SJ1 other end with resistance R 2 other ends; The transmitting-receiving conversion and control end R/T (PA2) of another input end of the Sheffer stroke gate of IC2 carrier-frequency oscilaltor and single-chip microcomputer IC7 joins.Tri-frequency divider IC3 output terminal joins by the primary coil centre tap of capacitor C 15 with sine wave shaper ZP3, reshaper ZP3 parallel connection of primary windings capacitor C 16, an and end ground connection, the input negative terminal of secondary coil one termination power amplifier IC4, input anode and the ground connection of another termination IC4, the IC4 output terminal is connected with the line of electric force live wire by normally closed contact, L1, the C1 wave filter of relay J 1.Coil one end of relay J 1 is connected other end ground connection with the conversion and control end R/T (PA2) of single-chip microcomputer IC7.
As shown in Figure 4, the single-chip microcomputer IC7 outage detection input end (PB7) in the collector is connected with live wire by a half-wave rectification bleeder circuit that is made of diode D1, resistance R 3, R4, capacitor C 17, the PB4 among the single-chip microcomputer IC7, PB5 two ends and E 2SDA, the SDL two ends of PROM memory IC8 are connected, in a single-chip microcomputer IC7 working power input end capacitor C 18 in parallel.Power supply just often, the PB7 end has the high level input and operate as normal, when outage, this pin is promptly reduced to low level in the 50ms, a because single-chip microcomputer IC7 power input big capacitor C 18 in parallel, still can keep more than the 100ms, thereby make single-chip microcomputer IC7 that the operation that preserves value of enough time be arranged, it sends instant cumulative data into E by PB4 and PB5 two ends 2PROM memory IC8, its value preserving is eternal.Behind service restoration, single-chip microcomputer IC7 retrieves data from memory IC8, continues to carry out numeration.
As shown in Figure 5, the collection center is made of single-chip microcomputer IC13, relay J 2, input isolating transformer ZP4, carrier wave receiving circuit IC9, carrier wave transtation mission circuit (IC10, IC11, IC12), its intermediate power amplifier IC12 output signal is by output isolation transformer B1 coupling, send into line of electric force through two normally closed contacts of J2, capacitor C 19, C20, the RX.D of single-chip microcomputer IC13, TX.D two ends are connected with computing machine by the RS-232 interface chip, and all the other each several part compositions and connected mode are identical with collector.
Need copy the number of degrees of a certain electric energy meter when power department, it is the data (see figure 5) of certain collector, owing to there is the address code of each collector that the collection center comprised in the computing machine, when sending instruction, computing machine passes through the RS-232 interface chip to the collection center, require to gather the data of certain collector, in the heart single-chip microcomputer IC13 conversion and control end R '/T ' (PA1 in the collection, 2) the carrier-frequency oscilaltor IC10 in relay J 2 control coils and carrier wave transtation mission circuit sends signal simultaneously, the one, make relay J 2 adhesives, make line of electric force and carrier wave receiving circuit disconnected and connect with the carrier wave transtation mission circuit, two provide high level gives carrier-frequency oscilaltor IC10, make it work, at this moment, single-chip microcomputer IC13 (PA1.1) is input to the grid of field effect transistor G2 to computing machine binary code level instruction by data output end T ' .D ', when instruction is high level, field effect transistor G2 conducting, the resonant tank that capacitor C 31 is incorporated the crystalline quartz oscillator into descends carrier frequency to some extent, when instruction is low level, field effect transistor G2 ends, capacitor C 31 breaks away from the resonant tank of crystal oscillator SJ2 and carrier frequency is gone up to some extent, so, single-chip microcomputer IC13 data output end T ' .D ' level (PA1.1) changes the variation that just changes into carrier frequency, thereby realized carrier modulation, carrier wave after the modulation is via the IC11 three frequency division, become centre frequency and be the positive square wave about 151.2KHz, transformer ZP6 is elementary in capacitor C 34 is coupled to again, so, the waveform that secondary induction comes out just becomes sine wave, this sine wave is through the IC12 power amplification, output isolation transformer B1 coupling, and after the normally closed contact of relay J 2, capacitor C 19, C20 sends on the line of electric force.This signal is through the carrier frequency band-pass filter of the C1L1 of collector series resonance and the input isolating transformer ZP1 isolation (see figure 4) to the 220V AC signal, improved the signal to noise ratio (S/N ratio) of 151.2KHZ carrier wave, enter the mixing input end of IC1 by capacitor C 3 through coupling, after the mixing, through the filtering of ZP2 I.F.T., be coupled into the amplitude limit input end of IC1 by capacitor C 6, amplify through the inner amplitude limit of IC1, detection, again through resistance R 1, capacitor C 10 filtering, giving low frequency by capacitor C 11 couplings amplifies, output signal is sent into the data receiver R.D (PA0) of single-chip microcomputer IC7, when single-chip microcomputer IC7 receives when conforming to instruction with this address code, by conversion and control end R/T (PA2) transmission of the IC2 carrier-frequency oscilaltor in relay J 1 and carrier wave transtation mission circuit simultaneously signal, the one, make relay J 1 adhesive that line of electric force and carrier wave receiving circuit are disconnected and connect with the carrier wave transtation mission circuit, two provide high level gives the IC2 carrier-frequency oscilaltor, makes it work.Simultaneously, single-chip microcomputer IC7 inputs to the carrier wave transtation mission circuit to electric energy meter accumulative total and self address code of storing by data output end T.D (PA1), carrier modulation through the carrier wave transtation mission circuit, frequency division, sine wave shaped, power amplification, send data-signal by line of electric force to the collection center, the collection center is the data-signal that receives, through carrier wave receiving circuit 1 ' mixing, filtering, amplitude limit amplifies, detection and low frequency amplify, output signal sends the R.D end of single-chip microcomputer IC13 to, IC13 is by the RS-232 interface chip, data dispatch computer is handled, reached the purpose that to make a copy of the electric energy meter power consumption at any time automatically.
Embodiment two
As shown in Figure 2, present embodiment two also gathers the collector of electric energy meter reading by one and the collection center of reception collector data is formed, wherein collector and gather in the heart carrier wave receiving circuit and carrier wave transtation mission circuit, the modulator-demodular unit IC15 (IC16) that is made up of the ST7537 special module constitutes, its collection carrier wave receives and is sent in one, under normal conditions, this circuit is in the carrier wave accepting state.
When sending instruction, computing machine passes through the RS-232 interface chip to the center of collection (see figure 7), require to gather the data of certain collector, in the heart single-chip microcomputer IC13 conversion and control end R '/T ' (PA1.2) goes out low level signal to 20 human hair combing wastes of IC16 in the collection, the IC16 integrated circuit enters sending mode, single-chip microcomputer IC13 (PA1.1) exports computer instruction by data output end T ' .D ', 22 pin of input IC16, enter in the ST7537 integrated circuit and modulate, harmonic wave composition in internal pass band filter filtering data-signal again, amplify through amplifier again, 7 pin by IC16 are exported the complementary output driver of being made up of G9~G14 to drive of recommending, then through C52, L3 filtering sends to line of electric force through the B3 coupling, when data-signal on the line of electric force enters (see figure 6) in the collector, be coupled by transformer B2, C41, L2 filtering enters 3 pin of IC15, is in accepting state because work as IC11, G3~G8 ends, and driving circuit quits work.This signal is after the band-pass filter of IC15 inside, amplify 20db by amplifier, make large-signal be subjected to symmetrical limiting, be lowered into intermediate frequency by mixing then, intermediate-freuqncy signal after the mixing is the if bandpas filter filtering of 5.4KHZ through centre frequency, signal is coupled to 27 pin by the 26 foot meridian capacitor C40 of IC15 then, send into detuner demodulation filtering again, send into the data input pin R.D (PA0) of single-chip microcomputer IC7 by the output of 23 pin, when single-chip microcomputer IC7 receives with this address code conforms to instruction, the R/T of IC7 (PA2) promptly goes out low level signal to 20 human hair combing wastes of IC15, make IC15 enter sending mode, then IC7 the power consumption of electric energy meter and self address code data by T, D (PA1) is input to 22 pin of IC15, the process of transmitting of IC15 is the same with the process of transmitting of IC16, this signal is received by the IC16 at the center of gathering through line of electric force again, IC16 repeats the receiving course of above-mentioned IC15, received signal is sent into (PA1.0) of the IC13 at collection center by 23 pin of IC16, then IC13 with the data-signal that receives through the RS-232 interface chip, issue Computer Processing, finished the whole process of checking meter of electric energy meter.
In sum, the utility model compared with prior art has following advantage:
1, owing to adopt the low-voltage power line transmission, manual metering is from house to house become automatically Check meter, save a large amount of manpowers.
2, original mechanical power energy meter can continue to use, and repacking is convenient, greatly reduces cost.
3, the used electric degree number of certain electric energy meter can regularly be checked meter or at any time inquire about to computer.
4, can carry out the peak according to the regulation of various places Utilities Electric Co., the calculating of the different electricity prices of paddy electricity.
5, can grasp the electricity consumption situation at any time.
6, anti-interference is good.
7, the function that has the outage value preserving.

Claims (5)

1, a kind of intelligent carrier meter reading device, it has:
A collector of gathering the electric energy meter reading, attaching is in mechanical power energy meter, contain infrared photoelectric sensor, single-chip microcomputer IC7 in the collector, the rotating disk rotating cycle of mechanical power energy meter is converted into pulse number by photoelectric sensor, then by single-chip microcomputer sampling input end (RTCC), be input to and store among the single-chip microcomputer IC7 and accumulative total
Single-chip microcomputer IC13 is contained at the collection center of reception collector data in the heart in the collection, it is connected with computing machine by the RS-232 interface chip,
The utility model is characterised in that collector and collection center also respectively contain carrier wave receiving circuit and carrier wave transtation mission circuit, carrier wave receiving circuit 1,1 ' input end and carrier wave transtation mission circuit 2,2 ' output terminal be connected with line of electric force by AC coupling, carrier wave receiving circuit 1,1 ' output terminal respectively with single-chip microcomputer IC7, the data input pin of IC13 (PA0) is connected with (PA1.0), carrier wave transtation mission circuit 2,2 ' input end respectively with single-chip microcomputer IC7, the data output end of IC13 (PA1) is connected with (PA1.1), carrier wave transtation mission circuit 2 and 2 ' the work control end respectively with single-chip microcomputer IC7, conversion and control end (PA2) among the IC13 is connected with (PA1.2).
2, intelligent carrier meter reading device according to claim 1, it is characterized in that carrier wave receives and transtation mission circuit is made up of separate module, wherein put detuner IC1 (IC9) in the frequency modulation that collector and the carrier wave receiving circuit 1 (1 ') of gathering the center are made up of CMOS or PMOS integrated circuit and constitute the carrier-frequency oscilaltor IC2 (IC10) that carrier wave transtation mission circuit 2 (2 ') is made up of modulator G1 (G2), CMOS or PMOS integrated circuit, tri-frequency divider IC3 (IC11), power amplifier IC4 (IC12) formation.
3, intelligent carrier meter reading device according to claim 2, it is characterized in that carrier wave receiving circuit 1 input end in the collector is connected with line of electric force by relay J 1 with carrier wave transtation mission circuit 2 output terminals, the coil control end of relay J 1 is connected with the conversion and control end (PA2) of single-chip microcomputer IC7; In the heart carrier wave receiving circuit 1 ' input end is connected with line of electric force by relay J 2 with carrier wave transtation mission circuit 2 ' output terminal in the collection, the coil control end of relay J 2 is connected with the conversion and control end (PA1.2) of single-chip microcomputer IC13, is in by the switching decision-making circuit of relay J 1, J2 to receive or transmit status.
4, intelligent carrier meter reading device according to claim 1, it is characterized in that carrier wave receives and transtation mission circuit is made up of special module, collector and gather in the heart carrier wave receiving circuit and carrier wave transtation mission circuit, the modulator-demodular unit IC15 (IC16) that is made up of the ST7537 integrated circuit constitutes, its collection carrier wave receives and is sent in one, and it is coupled on the line of electric force by power amplifier 3 (4) and isolating transformer B2 (B3) respectively.
5,, it is characterized in that the single-chip microcomputer IC7 outage detection input end (PB7) in the collector is connected the PB4 among the single-chip microcomputer IC7, PB5 two ends and E with live wire by a half-wave rectification and voltage division circuit according to claim 3 or 4 described intelligent carrier meter reading devices 2The SDA of PROM memory, SDL two ends are connected, in a single-chip microcomputer IC7 working power input end capacitor C 18 in parallel.
CN 96202199 1996-01-29 1996-01-29 Intelligent carrier wave data sampling device for electric meter Expired - Fee Related CN2267462Y (en)

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Application Number Priority Date Filing Date Title
CN 96202199 CN2267462Y (en) 1996-01-29 1996-01-29 Intelligent carrier wave data sampling device for electric meter

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Application Number Priority Date Filing Date Title
CN 96202199 CN2267462Y (en) 1996-01-29 1996-01-29 Intelligent carrier wave data sampling device for electric meter

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CN2267462Y true CN2267462Y (en) 1997-11-12

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CN 96202199 Expired - Fee Related CN2267462Y (en) 1996-01-29 1996-01-29 Intelligent carrier wave data sampling device for electric meter

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101738519B (en) * 2008-11-07 2012-11-14 深圳市宝利达实业有限公司 Electricity consumption payment settlement system and implementation method thereof
CN104635195A (en) * 2013-11-13 2015-05-20 中国石油化工股份有限公司 Walking beam type pumping unit applied load power meter on-spot error tester
CN106788590A (en) * 2016-05-25 2017-05-31 熊慎勋 Remote automatic meter reading is realized using resident's supply network
CN111064497A (en) * 2019-11-15 2020-04-24 国网河南省电力公司驻马店供电公司 Acquisition, operation and maintenance system based on HPLC (high performance liquid chromatography) platform area

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101738519B (en) * 2008-11-07 2012-11-14 深圳市宝利达实业有限公司 Electricity consumption payment settlement system and implementation method thereof
CN104635195A (en) * 2013-11-13 2015-05-20 中国石油化工股份有限公司 Walking beam type pumping unit applied load power meter on-spot error tester
CN104635195B (en) * 2013-11-13 2017-09-08 中国石油化工股份有限公司 Beam pumping unit applied load electric energy meter error on-spot tester
CN106788590A (en) * 2016-05-25 2017-05-31 熊慎勋 Remote automatic meter reading is realized using resident's supply network
CN111064497A (en) * 2019-11-15 2020-04-24 国网河南省电力公司驻马店供电公司 Acquisition, operation and maintenance system based on HPLC (high performance liquid chromatography) platform area
CN111064497B (en) * 2019-11-15 2022-04-19 国网河南省电力公司驻马店供电公司 Acquisition, operation and maintenance system based on HPLC (high performance liquid chromatography) platform area

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