CN106324339A - Metering circuit - Google Patents
Metering circuit Download PDFInfo
- Publication number
- CN106324339A CN106324339A CN201610654511.4A CN201610654511A CN106324339A CN 106324339 A CN106324339 A CN 106324339A CN 201610654511 A CN201610654511 A CN 201610654511A CN 106324339 A CN106324339 A CN 106324339A
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- CN
- China
- Prior art keywords
- chip
- metering
- sampling circuit
- signal
- voltage signal
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/061—Details of electronic electricity meters
- G01R22/066—Arrangements for avoiding or indicating fraudulent use
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
- G01R11/24—Arrangements for avoiding or indicating fraudulent use
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The invention discloses a metering circuit, and the metering circuit comprises a metering module connected with a power frequency power supply. The metering module comprises a metering chip, a current sampling circuit, a voltage sampling circuit, and a pulse generation loop. The current sampling circuit and the voltage sampling circuit are connected with the power frequency power supply and the metering chip. The current sampling circuit collects a voltage signal of the power frequency power supply, and transmits the voltage signal to the metering chip. The voltage sampling circuit collects a current signal of the power frequency power supply, and transmits the current signal to the metering chip. The metering chip is connected with the pulse generation loop, converts the received voltage signal and current signal into pulses and transmits the pulses to the outside through the pulse generation loop. The metering chip carries out the monitoring of the current and voltage signals of the power frequency power supply, directly converts the signals into pulses through the metering module, transmits the pulses to a microcontroller, completes the following metering operation through the microcontroller, enables the circuit structure to be simple, and enables the function to be complete.
Description
[technical field]
The present invention relates to electric energy meter field, particularly relate to the metering circuit of a kind of simulation electric energy meter.
[background technology]
Along with the construction of intelligent grid, single, three-phase intelligent artificial intelligence electric energy meter obtains widely should in electric-power metering
With, but in use have also discovered problems, the on-the-spot bug list found directly changes table meter and by intelligent electric energy meter
Producer is responsible for process, because on-the-spot dress table connects electrician and the restriction of operation maintenance Personnel Skill Levels, it is impossible to intelligent electric energy meter
Fault do completely, the Trouble Report of system, therefore power system personnel and man of Watch Factory technical staff cannot be to intelligence Intelligent electrics
All kinds of faults that energy table occurs carry out in-depth study.Therefore to improve dress table to connect electrician and operation maintenance personnel's technology water
Flat, understand and be familiar with single, the operation principle of three-phase intelligent intelligent electric energy meter, can do when site intelligent table breaks down correct
Accident analysis and presentment system, complete Trouble Report, power system personnel and man of Watch Factory technical staff are by Trouble Report energy
All kinds of problems intelligent electric energy meter occur carry out in-depth study, are also that Ge Wang provincial electric power company is raw with intelligent electric energy meter simultaneously
Produce enterprise and provide substantial amounts of practical basis at aspects such as intelligent electric energy meter 6 application extension, technical research.WT-F56 intelligent simulation
Intelligent electric energy meter fault simulation actual training device, uses in conjunction with the on-the-spot existing typical electrical network operation event of electricity consumption and intelligent electric energy meter
In some typical faults on device, carry out analog demenstration and analysis, make Field Force understand, be familiar with on-the-spot fault, pass through
Training, study, understand and be familiar with single, the operation principle of three-phase intelligent intelligent electric energy meter.
The metering module of existing simulation electric energy meter, it is impossible to providing the function of measuring under stealing state, student cannot pass through
The study of simulation stage is to grasp the ability finding user's stealing.
[summary of the invention]
Problem to be solved by this invention provides a kind of metering circuit possessing detection stealing status function.
For reaching object defined above, the present invention uses following scheme: a kind of metering circuit, including the meter being connected with power frequency supply
Amount module, it is characterised in that: metering module comprises computation chip, current sampling circuit, voltage sample loop, pulse generation are returned
Road；Current sampling circuit and voltage sampling circuit are connected with power frequency supply and computation chip, and described current sampling circuit gathers work
The voltage signal of frequency power is also sent to described computation chip, and described voltage sampling circuit gathers the current signal of power frequency supply also
It is sent to described computation chip；Described computation chip is connected with pulse generation loop, and receives described voltage signal and described electricity
Stream signal is sent out through described pulse generation loop after being converted into pulse, and described pulse circuit includes receiving described pulse and putting
Big amplification module, also includes the rectification module being connected and carry out amplification afterpulse rectification with described amplification module；Metering electricity
Road is located in airtight shell, and described shell is made of plastics, and the diapire of described cabinet is provided with multiple strip projected parts, described
The sidewall of strip projected parts is provided with water guide rib, and described water guide rib stretches out from described diapire and width tapers into, described strip
Protruding top is provided with multiple tip of dripping.
First preferred version of the present invention is: described pulse is square-wave pulse.
Second preferred version of the present invention is: described computation chip includes and current sampling circuit, voltage sample loop, arteries and veins
Rush the first chip that generating loop connects and the second chip being connected with described first chip.
3rd preferred version of the present invention is:
One, the first chip controls voltage sample loop and the voltage signal of current sampling circuit Real-time Collection power frequency supply and
Current signal；
Two, when voltage signal is less than nominal voltage signal, the first chip starts the second chip operation and voltage signal
Pass to the second chip in real time with current signal, the second chip starts and records the startup time is the very first time, and every 10 points
Clock generates voltage signal, current signal, the Data-Link of time point and stores；
Three, when voltage signal is higher than nominal voltage signal, the first chip sends reading signal to the second chip；Second core
Sheet receives this reading signal and was recorded as the second time, then sends the very first time, the second time, at least one Data-Link to
One chip.
The present invention can reach following technique effect:
1. by the current signal of power frequency supply and voltage signal are monitored and are converted into by metering module
Pulse is sent out, to microcontroller, completing ensuing gage work by microcontroller so that this circuit structure simple and
Perfect in shape and function.
2. amplification module and the setting of rectification module, it is ensured that pulse will not cause bigger because of the interference of other circuit
Noise so that microprocessor cannot read.
3. individually stealing state is measured by the second chip, it is ensured that the accuracy of stealing status metric and can
By property.
These features of the present invention and advantage will be detailed in following detailed description of the invention, accompanying drawing exposure.
[accompanying drawing explanation]
The present invention is described further below in conjunction with the accompanying drawings:
Fig. 1 is the module diagram of the artificial intelligence ammeter of the embodiment of the present invention 1.
Fig. 2 is the module map of the electric energy meter mainboard of the embodiment of the present invention 1.
Fig. 3 is the theory diagram of the metering module of the embodiment of the present invention 1.
[detailed description of the invention]
The technical scheme of the embodiment of the present invention is explained and illustrated by the accompanying drawing below in conjunction with the embodiment of the present invention, but under
State embodiment and be only the preferred embodiments of the present invention, and not all.Based on the embodiment in embodiment, those skilled in the art
On the premise of not making creative work, obtained other embodiments, broadly fallen into protection scope of the present invention.
Embodiment 1.
Metering circuit is located in artificial intelligence electric energy meter, in order to express easily, and the most first structure to artificial intelligence electric energy meter
And operation principle is described, Details as Follows.
Referring to Fig. 1, a kind of artificial intelligence electric energy meter, including electric energy meter mainboard and the simulated failure that is connected with electric energy meter mainboard
Panel and communication conversion and control case, communication conversion and control case realizes communicating by RS485 with electric energy meter mainboard, makes communication change
The data of control chamber reading power meters mainboard, communication conversion and control case realizes communicating by RS485 with simulated failure panel, makes
Communication conversion and control case controls simulated failure panel and controls with the simulation realizing fault.
Metering circuit is located in artificial intelligence electric energy meter, in namely airtight shell is located at by artificial intelligence electric energy meter, and institute
Stating shell to be made of plastics, the diapire of described cabinet is provided with multiple strip projected parts, and the sidewall of described strip projected parts is provided with leads
Water muscle, described water guide rib stretches out from described diapire and width tapers into, and the top of described strip projected parts is provided with multiple
Water is most advanced and sophisticated.
Its workflow is: the communication conversion and control case energy information data by RS485 reading power meters mainboard, when needing
During simulated failure to be set, communication conversion and control case sends commands to simulated failure panel by RS485 so that simulated failure
Panel performs simulated failure to electric energy meter mainboard and controls, thus realizes simulated failure to be performed.
Referring to Fig. 2, electric energy meter mainboard include microprocessor, metering circuit, communication module, display module, expense control module, time
Clock module, multi-functional output module and power module, wherein, microprocessor is led to communication conversion and control case by communication module
Letter, microprocessor through bus shows the display function of electric energy meter with display module communication, and microprocessor passes through with metering circuit
Serial bus communication completes the function of measuring of electric energy meter, and microprocessor through bus controls to take control module and realizes expense control function, micro-
Processor obtains clock information, microprocessor and the many merits of clock module co-controlling with clock module by serial bus communication
Can realize multifunctional pulse output by output module, power module provides power supply for electric energy meter mainboard.
Simulated failure panel comprises main control unit, communication unit, relay control unit, relay matrix list
Unit.When simulated failure function to be realized, communication conversion and control case sends commands to simulated failure panel by RS485, life
Order can be then transferred to main control unit by communication unit, after main control unit analyzing and processing order, by controlling relay
Control unit, thus relay matrix unit is performed operation, thus realize simulated failure function.Concrete simulated failure realizes
Mode is: on electric energy meter, power supply circuits and the signal circuit of each module are provided with multiple switch.Relay control unit can
To control aforesaid plurality of to switch on-off, needs simulate certain module break down time, the power supply circuits of drop corresponding module
Or signal output apparatus.
With reference to Fig. 3, the metering circuit in electric energy meter mainboard comprises metering module, and metering module comprises computation chip, electric current
Sampling circuit, voltage sample loop, pulse generation loop；Current sampling circuit and voltage sampling circuit and power frequency supply and metering
Chip connects, and described current sampling circuit gathers the voltage signal of power frequency supply and is sent to described computation chip, described voltage
Sample circuit gathers the current signal of power frequency supply and is sent to described computation chip；Described computation chip and pulse generation loop
Connect, and receive described voltage signal and described current signal is converted into after square-wave pulse through described pulse generation loop to outgoing
Send；Microprocessor comprises single-chip microcomputer, and single-chip microcomputer receives described square-wave pulse the energy information data process preservation being converted into；Single
The energy information that sheet machine will show is sent to display module by bus, thus realizes the information display function of electric energy meter.Institute
State the amplification module that pulse circuit includes receiving described pulse and amplifying, also include being connected with described amplification module and to amplifying after
Pulse carries out the rectification module of rectification.
When communication conversion and control case by RS485 electric energy meter mainboard carried out information mutual time, data pass through communication unit
Then single-chip microcomputer is arrived, after single-chip microcomputer processes the information received and analyzes and processes, through RS485 communication unit by information back
To communication conversion and control case；When single-chip microcomputer receives the control cx order that communication conversion and control case sends, single-chip microcomputer judges control
After system order is legal, single-chip microcomputer can control expense control unit and realize expense control function；By single-chip microcomputer by universal serial bus and clock module
Communication, thus obtain clock information；Power module realizes being converted into alternating current the function of DC source needed for electric energy meter.
Aforementioned computation chip includes and current sampling circuit, voltage sample loop, loop-coupled first core of pulse generation
Sheet and the second chip being connected with described first chip, wherein first chip gage work in course of normal operation, the
Two chips gage work under stealing state, specific works flow process is as follows:
One, the first chip controls voltage sample loop and the voltage signal of current sampling circuit Real-time Collection power frequency supply and
Current signal；
Two, when voltage signal is less than nominal voltage signal, the first chip starts the second chip operation and voltage signal
Pass to the second chip in real time with current signal, the second chip starts and records the startup time is the very first time, and every 10 points
Clock generates voltage signal, current signal, the Data-Link of time point and stores；
Three, when voltage signal is higher than nominal voltage signal, the first chip sends reading signal to the second chip；Second core
Sheet receives this reading signal and was recorded as the second time, then sends the very first time, the second time, at least one Data-Link to
One chip；
Four, the first chip is sent to microprocessor after obtaining the aforementioned very first time, the second time, at least one Data-Link；
Five, microprocessor receives the aforementioned very first time, the second time, at least one Data-Link and stores, and controls display
The module display very first time, the second time；
Six, aforementioned microprocessor is connected with external server by communication conversion and control case, and transmit the described very first time,
Second time, at least one Data-Link and ammeter are numbered and are stored to external server.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited thereto, and is familiar with
This those skilled in the art should be understood that the present invention includes but not limited to accompanying drawing and interior described in detailed description of the invention above
Hold.Any it is intended to be included in the scope of claims without departing from the function of the present invention and the amendment of structural principle.
Claims (4)
1. a metering circuit, including the metering module being connected with power frequency supply, it is characterised in that: metering module comprises metering core
Sheet, current sampling circuit, voltage sample loop, pulse generation loop；Current sampling circuit and voltage sampling circuit and power frequency electric
Source and computation chip connect, and described current sampling circuit gathers the voltage signal of power frequency supply and is sent to described computation chip,
Described voltage sampling circuit gathers the current signal of power frequency supply and is sent to described computation chip；Described computation chip and pulse
Generating loop connects, and receive described voltage signal and described current signal be converted into after pulse through described pulse generation loop to
Outer transmission, described pulse circuit includes the amplification module receiving described pulse and amplifying, and also includes being connected with described amplification module
And amplification afterpulse is carried out the rectification module of rectification；Metering circuit is located in airtight shell, and described shell is made of plastics,
The diapire of described cabinet is provided with multiple strip projected parts, and the sidewall of described strip projected parts is provided with water guide rib, described water guide rib from
Described diapire stretches out and width tapers into, and the top of described strip projected parts is provided with multiple tip of dripping.
Metering circuit the most according to claim 1, it is characterised in that: described pulse is square-wave pulse.
Metering circuit the most according to claim 1, it is characterised in that: described computation chip includes and current sampling circuit, electricity
Pressure sampling circuit, loop-coupled first chip of pulse generation and the second chip being connected with described first chip.
Metering circuit the most according to claim 3, it is characterised in that:
One, the first chip controls voltage sample loop and the voltage signal of current sampling circuit Real-time Collection power frequency supply and electric current
Signal；
Two, when voltage signal is less than nominal voltage signal, the first chip starts the second chip operation and voltage signal and electricity
Stream signal passes to the second chip in real time, and the second chip starts and records the startup time is the very first time, and every life in 10 minutes
Become voltage signal, current signal, the Data-Link of time point and store；
Three, when voltage signal is higher than nominal voltage signal, the first chip sends reading signal to the second chip；Second chip connects
Receive this reading signal and be recorded as the second time, then sending the very first time, the second time, at least one Data-Link to the first core
Sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610654511.4A CN106324339A (en) | 2016-08-11 | 2016-08-11 | Metering circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610654511.4A CN106324339A (en) | 2016-08-11 | 2016-08-11 | Metering circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106324339A true CN106324339A (en) | 2017-01-11 |
Family
ID=57740156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610654511.4A Pending CN106324339A (en) | 2016-08-11 | 2016-08-11 | Metering circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106324339A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111505561A (en) * | 2020-04-29 | 2020-08-07 | 内蒙古电力(集团)有限责任公司 | Metering simulation circuit and IR46 electric energy meter working condition simulation device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203080814U (en) * | 2013-01-23 | 2013-07-24 | 山东鑫达鲁鑫防水材料有限公司 | Plastic protective drain board |
| CN204516037U (en) * | 2015-02-15 | 2015-07-29 | 西安信龙电子科技有限公司 | Intelligent meter data recording machine |
| CN105785117A (en) * | 2016-04-08 | 2016-07-20 | 国网浙江省电力公司培训中心 | Metering circuit |
| CN105785118A (en) * | 2016-04-08 | 2016-07-20 | 国网浙江省电力公司培训中心 | Simulated intelligent electric energy meter |
-
2016
- 2016-08-11 CN CN201610654511.4A patent/CN106324339A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203080814U (en) * | 2013-01-23 | 2013-07-24 | 山东鑫达鲁鑫防水材料有限公司 | Plastic protective drain board |
| CN204516037U (en) * | 2015-02-15 | 2015-07-29 | 西安信龙电子科技有限公司 | Intelligent meter data recording machine |
| CN105785117A (en) * | 2016-04-08 | 2016-07-20 | 国网浙江省电力公司培训中心 | Metering circuit |
| CN105785118A (en) * | 2016-04-08 | 2016-07-20 | 国网浙江省电力公司培训中心 | Simulated intelligent electric energy meter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111505561A (en) * | 2020-04-29 | 2020-08-07 | 内蒙古电力(集团)有限责任公司 | Metering simulation circuit and IR46 electric energy meter working condition simulation device |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170111 |
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| RJ01 | Rejection of invention patent application after publication |