CN206489195U - Intelligent electric energy meter - Google Patents
Intelligent electric energy meter Download PDFInfo
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- CN206489195U CN206489195U CN201621364364.9U CN201621364364U CN206489195U CN 206489195 U CN206489195 U CN 206489195U CN 201621364364 U CN201621364364 U CN 201621364364U CN 206489195 U CN206489195 U CN 206489195U
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Abstract
Intelligent electric energy meter, including MCU data processors, infrared communication circuit, signal circuit, line carrier communication interface circuit, liquid crystal display and backlight circuit, infrared communication circuit, signal circuit, line carrier communication interface circuit, liquid crystal display and backlight circuit are connected with MCU data processors respectively；The infrared communication circuit includes infrared transtation mission circuit and infrared receiving circuit and infrared receiving circuit, infrared receiving circuit, infrared receiving circuit are connected with MCU data processors respectively, the infrared receiving circuit includes IR signal reception pipe IR1, and infrared transtation mission circuit includes infrared signal transmitting tube IR2.This electric energy meter has infrared-ray communication, two kinds of communication patterns of electric line carrier communication, and component structure is simple, and electric energy meter stability is high, strong antijamming capability.
Description
Technical field
The invention belongs to electronic electricity meter technical field, and in particular to one kind has intelligent electric energy meter.
Background technology
Electric energy meter, for measuring the instrument of electric energy, business unit of everyday home and commercial use etc. is required for power consumption,
It is relatively time-consuming also laborious and power office needs by the way that manually meter reading is realized from house to house mostly, and there is essence in manual metering
Exactness is unreliable, has easily caused the error in statistics expense, over time, very big error can be brought, to user
Cause certain loss.Traditional electric energy meter is combined by single-chip microcomputer, computation chip and liquid crystal drive, circuit structure ratio
More complicated, communication mode is relatively simple, easily by electromagnetic interference, and the stability of a system of whole ammeter not enough, therefore gives pcb board
There is difficulty in making, because of the multiple hardware used, also result in the larger waste of material resources.
The content of the invention
The problem of the invention aims to solve current electric energy table function, has intelligent electric energy meter there is provided a kind of,
Improve the utilization ratio of electric energy and the meter reading efficiency of power office.
In order to reach foregoing invention purpose, the present invention uses following technical scheme：
A kind of intelligent electric energy meter, including MCU data processors, infrared communication circuit, signal circuit, power line carrier
Communication interface circuit, liquid crystal display and backlight circuit, the infrared communication circuit, signal circuit, power line carrier communication
Interface circuit, liquid crystal display and backlight circuit are connected with MCU data processors respectively；The infrared communication circuit includes infrared hair
Power transmission road and infrared receiving circuit, infrared transtation mission circuit, infrared receiving circuit are connected with MCU data processors respectively, described red
Outer receiving circuit includes IR signal reception pipe IR1, and the IR signal reception pipe IR1 pin of output OUT the 1st connect electric capacity C42 one end,
The IR signal reception pipe IR1 pin of power supply VCC the 3rd are connected respectively with resistance R75 one end, electric capacity C41 one end, and resistance R75 is another
Termination activities voltage VDD, electric capacity the C42 other end, the electric capacity C41 other ends, the IR signal reception pipe IR1 pin of ground connection GND the 2nd
All it is grounded；Infrared transtation mission circuit includes infrared signal transmitting tube IR2, and infrared signal transmitting tube IR2 uses light emitting diode, works
Voltage VDD is connected with PNP triode Q2 emitter stage, and PNP triode Q2 colelctor electrode is connected respectively with resistance R79, R78, electricity
Node between resistance R79, R78 is connected with infrared signal transmitting tube IR2 positive poles, infrared signal transmitting tube IR2 negative poles ground connection, PNP
Triode Q2 base stages are connected with resistance R80.
This electric energy meter includes two kinds of communication modes of infrared-ray communication and electric line carrier communication.Electric capacity C41, C42 are act as
Isolation moves back occasionally blocking and circulates AC influence signal to digitally, plays filter action.Infrared signal transmitting tube IR2 plays transmitting
Signal function.Resistance R79, R78 parallel connection plays that electric current in shunting action, circuit is larger, and single resistor power is limited, and shunting has
Protective resistance is hardly damaged.Resistance R80 is base electrode current-limiting resistance.Whole infrared communication circuit signal stabilization, transmission is smooth, resists
Interference is strong.
Further, the signal circuit includes computation chip electrical energy impulse signals transmission circuit, the survey of Multifunctional mouth
Try pulse transmission circuit, RS485 signal circuits, the computation chip electrical energy impulse signals transmission circuit, Multifunctional mouth
Test pulse transmission circuit, RS485 signal circuits are connected with MCU data processors respectively.
Further, the computation chip electrical energy impulse signals transmission circuit includes optocoupler OPT3, optocoupler OPT7, resistance
R38 is connected with the light emitting diode positive pole in optocoupler OPT7, the light emitting diode negative pole ground connection in optocoupler OPT7, optocoupler OPT7
Interior phototriode colelctor electrode connects phototriode emitter stage connecting resistance R47 one end in operating voltage VDD, optocoupler OPT7,
The resistance R47 other ends are grounded；Resistance R76 is connected with the light emitting diode negative pole in optocoupler OPT3, and luminous two in optocoupler OPT3
Colelctor electrode, the emitter stage that pole pipe positive pole connects the phototriode in operating voltage VDD, optocoupler OPT3 are connected to electric energy meter calibrating output
Terminal.Operating voltage VDD,
Further, the test pulse transmission circuit of the Multifunctional mouth includes optocoupler OPT4, resistance R43 and optocoupler OPT4
Light emitting diode positive pole connects photosensitive three pole in operating voltage VDD, optocoupler OPT4 in interior light emitting diode negative pole connection, optocoupler OPT4
Colelctor electrode, emitter stage connection electric energy meter pulse per second (PPS) or the period switching pulse output terminal of pipe.
Further, RS485 signal circuits include optocoupler OPT5, optocoupler OPT6, data receiver serial ports M RX and electricity
Resistance R28, electric capacity C53, the colelctor electrode of phototriode is connected respectively in optocoupler OPT5, and resistance R28 meets supply voltage DVDD, optocoupler
The emitter stage of phototriode, electric capacity C53 connect digitally in OPT5, and light emitting diode positive pole connects operating voltage in optocoupler OPT5
Light emitting diode negative pole, resistance R36, the pin MIC TX of MCU chip the 14th are sequentially connected in VDD, optocoupler OPT5；Data send serial ports
M TX are connected with light emitting diode negative pole in optocoupler OPT6, with optocoupler OPT6 luminous two after supply voltage DVDD connecting resistances R37
Pole pipe positive pole is connected, the colelctor electrode of phototriode and resistance R46 one end in optocoupler OPT5, electric capacity C28 one end, MCU chip the
13 pin MIC RX are connected respectively, emitter stage, the electricity of phototriode in resistance R46 another termination operating voltage VDD, optocoupler OPT5
Hold another termination simulation ground of C28.
Further, the MCU data processors use the chip of FM331X models.
Further, the liquid crystal display and backlight circuit include liquid crystal display LCD1 and transistor BG1, the liquid crystal
Show that device LCD1, transistor BG1 are connected with MCU data processors.
Further, the liquid crystal display LCD1 uses SDH-m11218s03-HP4 models, and the transistor BG1 is adopted
With the MDK-6431W1A0 backlight models of WR81063031WH0 111.
Further, single-phase electricity 220VAC is output as supply voltage DVDD and front end electricity of different sizes after transformer pressure-reducing
VDCC, front voltage VDCC is pressed to obtain operating voltage VDD after being changed through power supply DC/DC change-over circuits.
Further, the line carrier communication interface circuit includes J1 interfaces and J2 interfaces, and the J1 interfaces are single
Needle interface, the J2 interfaces be double needle interface, EVENTOUT2 pin connecting resistance R31 one end of the J2 interfaces, J2 interfaces
RST4 pin connecting resistance R30 one end, TXD8 pin connecting resistance R49 one end, resistance R34 one end of J2 interfaces, the RXD5 pin of J2 interfaces connect
Resistance R29 one end, 3 pin connecting resistance R50 one end, resistance R48 one end of J2 interfaces, resistance R50 one end, resistance R48 one end are another
The pin of+12V 12 of termination activities voltage VDD, J2 interface connect electric capacity C19 one end, electric capacity C20 one end, the electric capacity C19 other ends, electricity
Hold C20 other ends ground connection.
Compared with prior art, beneficial effect is the present invention：This electric energy meter has infrared-ray communication, electric line carrier communication
Two kinds of communication patterns, component structure is simple, and electric energy meter stability is high, strong antijamming capability.
Brief description of the drawings
Fig. 1 is MCU data processor circuit figures；
Fig. 2 is infrared communication circuit figure；
Fig. 3 is signal circuit figure；
Fig. 4 is line carrier communication interface circuit diagram；
Fig. 5 is liquid crystal display and backlight circuit figure.
Embodiment
Explanation is further described to technical scheme below by specific embodiment.
As shown in Figure 1-2, the electric energy meter communicated with multipath, including MCU data processors, infrared communication circuit, letter
Number transmission circuit, line carrier communication interface circuit, liquid crystal display and backlight circuit, the infrared communication circuit, signal are passed
Transmission of electricity road, line carrier communication interface circuit, liquid crystal display and backlight circuit are connected with MCU data processors respectively；It is described
Infrared communication circuit include infrared transtation mission circuit and infrared receiving circuit, infrared transtation mission circuit, infrared receiving circuit respectively with MCU
Data processor is connected, and the infrared receiving circuit includes IR signal reception pipe IR1, and the pin of IR signal reception pipe IR1 the 1st connect
The 17th pin, the electric capacity C42 of MCU chip, IR signal reception pipe IR1 the 3rd pin are connected respectively with resistance R75, electric capacity C41, resistance
R75 meets operating voltage VDD, and electric capacity C42, electric capacity C41, the pin of IR signal reception pipe IR1 the 2nd are all grounded；Infrared transtation mission circuit bag
Infrared signal transmitting tube IR2 is included, operating voltage VDD is connected with PNP triode Q2 emitter stage, PNP triode Q2 colelctor electrode
It is connected respectively with resistance R79, R78, the node between resistance R79, R78 is connected with infrared signal transmitting tube IR2 positive poles, infrared letter
Number transmitting tube IR2 negative poles ground connection, the 18th pin of PNP triode Q2 base resistance R80, MCU chips is sequentially connected.At MCU data
Manage the chip that device uses FM331X models.
IR signal reception pipe IR1 uses HM638R-L-W W0038HL-26-30 HS138M-W models, and resistance R75 is adopted
1000PF 10%0603 is used with 51R 5%0603, electric capacity C4110UF 10%0805 16V X5R, electric capacity C42.Infrared letter
Number transmitting tube IR2 uses VAT205 HS205 L5IR5-45 models, and resistance R80 uses 2K 5%0603, PNP triode Q2 to adopt
With 2SA812 SOT-23 models.
As shown in figure 3, signal circuit includes computation chip electrical energy impulse signals transmission circuit, the test of Multifunctional mouth
Pulse transmission circuit, RS485 signal circuits, the computation chip electrical energy impulse signals transmission circuit, the survey of Multifunctional mouth
Examination pulse transmission circuit, RS485 signal circuits are connected with MCU data processors respectively.
Computation chip electrical energy impulse signals transmission circuit is included in optocoupler OPT3, optocoupler OPT7, resistance R38 and optocoupler OPT7
The connection of light emitting diode positive pole, the light emitting diode negative pole ground connection in optocoupler OPT7, the phototriode collection in optocoupler OPT7
Electrode connects phototriode emitter stage connecting resistance R47 one end in operating voltage VDD, optocoupler OPT7, another terminations of resistance R47
Phototriode emitter stage in ground, optocoupler OPT7 is connected with the pin of MCU chip the 27th；The pin of MCU chip the 28th and resistance R76, light
Light emitting diode negative pole in coupling OPT3 is sequentially connected, and the light emitting diode positive pole in optocoupler OPT3 connects operating voltage, optocoupler
Colelctor electrode, the emitter stage of phototriode in OPT3 are connected to electric energy meter calibrating lead-out terminal.
Computation chip electrical energy pulse AP is transferred to the 27th pin CF IN of MCU chip by optocoupler OPT7, is divided by MCU
Exported, then transmitted to optocoupler OPT3 front end, all the way to electrical energy pulse indicator lamp by 68 pin CPLL of MCU chip after processing
LED3, all the way to exporting to plug receptacle or electric energy meter calibrating lead-out terminal after optocoupler.
The test pulse transmission circuit of Multifunctional mouth includes light emitting diode in optocoupler OPT4, resistance R43 and optocoupler OPT4
Negative pole is connected, in optocoupler OPT4 light emitting diode positive pole connect the colelctor electrode of phototriode in operating voltage VDD, optocoupler OPT4,
Emitter stage connects electric energy meter pulse per second (PPS) or period switching pulse output terminal.Multifunctional mouth test pulse (clock pulse per second (PPS)/when
The pulse of section switching) exported by MCU 79 pin TM.
RS485 signal circuits include optocoupler OPT5, optocoupler OPT6, data receiver serial ports M RX and resistance R28, electric capacity
The colelctor electrode of phototriode is connected respectively in C53, optocoupler OPT5, and resistance R28 connects light in supply voltage DVDD, optocoupler OPT5
Light emitting diode positive pole is connect in operating voltage VDD, optocoupler OPT5 in the emitter stage of quick triode, electric capacity C53 ground connection, optocoupler OPT5
Light emitting diode negative pole, resistance R36, the pin MIC TX of MCU chip the 14th are sequentially connected；Data send serial ports M TX and optocoupler OPT6
It is connected after interior light emitting diode negative pole connection, supply voltage DVDD connecting resistances R37 with light emitting diode positive pole in optocoupler OPT6,
The colelctor electrode of phototriode and resistance R46 one end, electric capacity C28 one end, RX points of the 13rd pin MIC of MCU chip in optocoupler OPT5
Do not connect, emitter stage, the electric capacity C28 other ends of phototriode in resistance R46 another termination operating voltage VDD, optocoupler OPT5
Ground connection.Single-phase electricity is converted to supply voltage DVDD after voltage stabilizing chip IC2 voltage stabilizings, and voltage stabilizing chip IC2 selects 78L05SOT-89
The model of long electricity.Then single-phase electricity is converted to operating voltage VDD through rectified bridge heap rectification through amplifier chip IC4.Rectifier bridge stack
BD1 selects MB10S MBS models, and IC4 uses LV2842XLVDDCR SOT6 chips.
Data receiver serial ports M RX, data send serial ports M TX and digital serial port the 14th, 13 pin M TX, M of MCU chip
RX passes through optocoupler OPT5, optocoupler OPT6 connections, and optocoupler plays a part of forceful electric power and light current isolation.
Optocoupler OPT3, optocoupler OPT7, optocoupler OPT5, optocoupler OPT6, optocoupler OPT4 use 816D models, resistance R76, electricity
Hinder R43, resistance R28, resistance R46, resistance R38, resistance R47 and use 2K 5%0603, R36, R37 use 1K 5%0603, electricity
Hold C35, electric capacity C28 and select 20PF 5%0603.
As shown in figure 5, liquid crystal display and backlight circuit include liquid crystal display LCD1 and transistor BG1, the liquid crystal
Show that device LCD1, transistor BG1 are connected with MCU data processors.The liquid crystal display LCD1 uses SDH-m11218s03-
HP4 models, the transistor BG1 uses WR81063031WH0 111MDK-6431W1A0 backlight models.Single-phase electricity 220VAC
It is supply voltage DVDD after transformer pressure-reducing, supply voltage DVDD obtains work after being changed through power supply DC/DC change-over circuits electric
Press VDD.Transformer uses HY-B35-1301 models.
As shown in figure 4, carrier communication interface circuit includes the interface circuit centered on double-row needle carrier interface J2, it is double
Pin carrier interface J2 the 2nd pin, resistance R31 connections are followed by the pin of MCU chip the 38th；Double-row needle carrier interface J2 the 3rd pin and electricity
Resistance R48, resistance R50 are connected respectively, and resistance R48 meets operating voltage VDD；Double-row needle carrier interface J2 the 4th pin and resistance R30
Connection, double-row needle carrier interface J2 the 8th pin is connected with resistance R29, double-row needle carrier interface J2 the 5th pin and resistance R34, electricity
Resistance R49 is connected respectively, and resistance R34 meets operating voltage VDD；Double-row needle carrier interface J2 the 12nd pin and electric capacity C19 in parallel, electricity
Hold and be grounded after C21 connections.Wherein, resistance R50 connects the pin of MCU chip the 35th, and resistance R30 connects the pin of MCU chip the 36th, and resistance R29 connects
The pin of MCU chip the 40th, resistance R49 connects the pin of MCU chip the 39th.
Resistance R29, resistance R30, resistance R31, resistance R49, resistance R50 select 100R 5%0805, resistance R48, resistance
R34 selects 5.1K 5%0805, and electric capacity C19, electric capacity C21 select the 16V X5R of 10UF 10%0805.
J2 is the jack interface of carrier module, and correspondence pin connects the pin of the corresponding mark of MCU chip.J1 interfaces directly connect civil power
Live wire and zero line.That is low voltage power line carrier signalling channel.
It is above the preferred embodiment of the present invention, protection scope of the present invention is not limited, for people in the art
Deformation and improvement that member makes according to the mentality of designing of the present invention, should all be considered as within protection scope of the present invention.
Claims (10)
1. intelligent electric energy meter, including MCU data processors, infrared communication circuit, signal circuit, power line carrier communication connect
Mouth circuit, liquid crystal display and backlight circuit, the infrared communication circuit, signal circuit, line carrier communication interface electricity
Road, liquid crystal display and backlight circuit are connected with MCU data processors respectively；The infrared communication circuit includes infrared transtation mission circuit
And infrared receiving circuit, infrared transtation mission circuit, infrared receiving circuit be connected with MCU data processors respectively, the infrared receiver
Circuit includes IR signal reception pipe IR1, and the IR signal reception pipe IR1 pin of output OUT the 1st connect electric capacity C42 one end, infrared letter
Number reception pipe IR1 pin of power supply VCC the 3rd are connected respectively with resistance R75 one end, electric capacity C41 one end, another termination works of resistance R75
Make voltage VDD, the electric capacity C42 other ends, the electric capacity C41 other ends, the IR signal reception pipe IR1 pin of ground connection GND the 2nd are all grounded；
Infrared transtation mission circuit includes infrared signal transmitting tube IR2, and infrared signal transmitting tube IR2 uses light emitting diode, operating voltage VDD
It is connected with PNP triode Q2 emitter stage, PNP triode Q2 colelctor electrode is connected respectively with resistance R79, R78, resistance R79,
Node between R78 is connected with infrared signal transmitting tube IR2 positive poles, infrared signal transmitting tube IR2 negative poles ground connection, PNP triode
Q2 base stages are connected with resistance R80.
2. intelligent electric energy meter according to claim 1, it is characterised in that the signal circuit includes computation chip electricity
Energy impulse signal circuit, the test pulse transmission circuit of Multifunctional mouth, digital serial port circuit, the computation chip electric energy arteries and veins
Signal circuit, the test pulse transmission circuit of Multifunctional mouth, digital serial port circuit is rushed respectively with MCU data processors to connect
Connect.
3. intelligent electric energy meter according to claim 2, it is characterised in that the computation chip electrical energy impulse signals transmission electricity
Road includes optocoupler OPT3, optocoupler OPT7, and resistance R38 is connected with the light emitting diode positive pole in optocoupler OPT7, in optocoupler OPT7
Light emitting diode negative pole is grounded, and the phototriode colelctor electrode in optocoupler OPT7 connects photosensitive in operating voltage VDD, optocoupler OPT7
Transistor emitter connecting resistance R47 one end, resistance R47 other ends ground connection；Light emitting diode in resistance R76 and optocoupler OPT3 is born
Pole is connected, and the light emitting diode positive pole in optocoupler OPT3 connects the current collection of the phototriode in operating voltage VDD, optocoupler OPT3
Pole, emitter stage are connected to electric energy meter calibrating lead-out terminal.
4. intelligent electric energy meter according to claim 2, it is characterised in that the test pulse transmission circuit of the Multifunctional mouth
Including optocoupler OPT4, resistance R43 is connected with light emitting diode negative pole in optocoupler OPT4, and light emitting diode positive pole connects in optocoupler OPT4
The colelctor electrode of phototriode, emitter stage connection electric energy meter pulse per second (PPS) or period switching pulse in working power VDD, optocoupler OPT4
Lead-out terminal.
5. intelligent electric energy meter according to claim 2, it is characterised in that digital serial port circuit includes optocoupler OPT5, optocoupler
OPT6, data receiver serial ports M RX are connected respectively with the colelctor electrode of phototriode in resistance R28, electric capacity C53, optocoupler OPT5,
Resistance R28 meets the emitter stage of phototriode, electric capacity C53 in supply voltage DVDD, optocoupler OPT5 and connect digitally, in optocoupler OPT5
Light emitting diode positive pole meets light emitting diode negative pole in operating voltage VDD, optocoupler OPT5, resistance R36, the pin MIC of MCU chip the 14th
TX is sequentially connected；Data send serial ports M TX and are connected with light emitting diode negative pole in optocoupler OPT6, supply voltage DVDD connecting resistances
It is connected after R37 with light emitting diode positive pole in optocoupler OPT6, the colelctor electrode of phototriode and resistance R46 mono- in optocoupler OPT5
End, electric capacity C28 one end, the pin MIC RX of MCU chip the 13rd are connected respectively, another termination operating voltage VDD, optocoupler of resistance R46
Another termination simulation ground of the emitter stage of phototriode, electric capacity C28 in OPT5.
6. intelligent electric energy meter according to claim 1, it is characterised in that the MCU data processors use FM331X types
Number chip.
7. intelligent electric energy meter according to claim 1, it is characterised in that the liquid crystal display and backlight circuit include liquid crystal
Display lcd 1 and transistor BG1, the liquid crystal display LCD1, transistor BG1 are connected with MCU data processors.
8. intelligent electric energy meter according to claim 7, it is characterised in that the liquid crystal display LCD1 uses SDH-
M11218s03-HP4 models, the transistor BG1 uses the MDK-6431W1A0 backlight models of WR81063031WH0 111.
9. intelligent electric energy meter according to claim 1, it is characterised in that single-phase electricity 220VAC is exported after transformer pressure-reducing
For supply voltage DVDD and front voltage VDCC of different sizes, front voltage VDCC is after the conversion of power supply DC/DC change-over circuits
Obtain operating voltage VDD.
10. intelligent electric energy meter according to claim 1, it is characterised in that the line carrier communication interface circuit bag
J1 interfaces and J2 interfaces are included, the J1 interfaces are single needle interface, and the J2 interfaces are double needle interface, the J2 interfaces
EVENTOUT2 pin connecting resistance R31 one end, RST4 pin connecting resistance R30 one end of J2 interfaces, the TXD8 pin connecting resistances R49 of J2 interfaces
One end, resistance R34 one end, RXD5 pin connecting resistance R29 one end of J2 interfaces, STA3 pin connecting resistance R50 one end of J2 interfaces, resistance
R48 one end, resistance R50 one end ,+12V12 pin of another termination operating voltage VDD, the J2 interface in resistance R48 one end meet electric capacity C19
One end, electric capacity C20 one end, the electric capacity C19 other ends, electric capacity C20 other ends ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621364364.9U CN206489195U (en) | 2016-12-13 | 2016-12-13 | Intelligent electric energy meter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621364364.9U CN206489195U (en) | 2016-12-13 | 2016-12-13 | Intelligent electric energy meter |
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| CN206489195U true CN206489195U (en) | 2017-09-12 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107064580A (en) * | 2016-12-13 | 2017-08-18 | 浙江恒业电子有限公司 | Intelligent electric energy meter |
| CN107797088A (en) * | 2017-11-06 | 2018-03-13 | 广东省计量科学研究院（华南国家计量测试中心） | Collect the rechargeable type photoelectric trigger device of wideband filtering and infrared receiver function |
| CN112213556A (en) * | 2020-09-08 | 2021-01-12 | 杭州涂鸦信息技术有限公司 | Load monitoring method and system for intelligent electric meter |
-
2016
- 2016-12-13 CN CN201621364364.9U patent/CN206489195U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107064580A (en) * | 2016-12-13 | 2017-08-18 | 浙江恒业电子有限公司 | Intelligent electric energy meter |
| CN107797088A (en) * | 2017-11-06 | 2018-03-13 | 广东省计量科学研究院（华南国家计量测试中心） | Collect the rechargeable type photoelectric trigger device of wideband filtering and infrared receiver function |
| CN107797088B (en) * | 2017-11-06 | 2023-12-12 | 广东省计量科学研究院（华南国家计量测试中心） | Chargeable photoelectric trigger device integrating broadband filtering and infrared receiving functions |
| CN112213556A (en) * | 2020-09-08 | 2021-01-12 | 杭州涂鸦信息技术有限公司 | Load monitoring method and system for intelligent electric meter |
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Address after: No. 1818, Xingping 1st Road, Pinghu Economic Development Zone, Pinghu City, Jiaxing City, Zhejiang Province Patentee after: Zhejiang Hengye Electronics Co.,Ltd. Address before: No. 1818, Xingping 1st Road, Pinghu Economic Development Zone, Pinghu City, Jiaxing City, Zhejiang Province Patentee before: ZHEJIANG HENGYE ELECTRONIC Co.,Ltd. |
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