CN110133338A - A kind of twin-core electric energy meter and display methods - Google Patents
A kind of twin-core electric energy meter and display methods Download PDFInfo
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- CN110133338A CN110133338A CN201910409908.0A CN201910409908A CN110133338A CN 110133338 A CN110133338 A CN 110133338A CN 201910409908 A CN201910409908 A CN 201910409908A CN 110133338 A CN110133338 A CN 110133338A
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- 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
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- 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
- G01R11/16—Adaptations of counters to electricity meters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
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Abstract
The invention discloses a kind of twin-core electric energy meters, belong to electric energy meter technical field, and the electric energy meter includes metering module and management module, and the management module is connected to the metering module by SPI communication interface；The metering module includes metering core, display and display button, and the management module includes management core；The metering core is internally provided with video memory, for caching all video memory frames for being output to the display；The metering core is connected to the display by the video memory, and the video memory is made of multiple metering video memory frames and multiple management video memory frames；The display button is connected to the display pin of the metering core, for switching the current video memory frame of the video memory.Electric energy meter of the present invention and display methods do not change twin-core electric energy meter server-client communication model, realize that management module data are flexibly shown in metering module, solve the problems, such as that installing pipe reason module is not unable to satisfy vertification regulation requirement.
Description
Technical field
The present invention relates to electric energy meter technical field, especially a kind of twin-core electric energy meter and display methods.
Background technique
JJG596 is regulation of the State Bureau of Quality Supervision by national standard calibrating electric energy meter.Including following 7 calibratings project: appearance
Inspection, AC voltage test, false actuation test, starting test, elementary error, instrument constant test, clock error of time of day.It is existing
Scheme is not able to satisfy vertification regulation requirement when lacking management module.It is specific as follows:
" visual examination " project needs to check that electricity is shown in regulation, removes after management module without display, is unsatisfactory for regulation
It is required that；
" instrument constant test " is also required to read display data in regulation, for recording the calibrating project beginning and end moment
Energy value.Remove after management module without display, is unsatisfactory for regulatory requirements；Existing design can only be by measuring RS485 port
Energy data is read, it is also infeasible that modification vertification regulation, which reads electric energy using communication, because electric energy meter communication protocol has very
It is a variety of, and always in evolution, vertification regulation can not determine specific communication protocol.
" clock error of time of day " is tested in regulation, and it will be " more that existing scheme, which is to send commands to metering core by managing core,
After function mouth output " is switched to second signal output, aptitude tests.It will be unable to calibrating " clock day timing mistake after removing management module
Difference ".
For existing scheme not display design in metering core, technical difficult points are will to show that design after metering core, is managed
Reason core related data will be unable to show.Although " Multifunctional mouth output " function is readily devised metering core, due to can not
By display design in metering core, even if " Multifunctional mouth output " Functional Design is become nonsensical to metering core.
Metering core and management core have many data to need to show, the traffic model of server-client between twin-core, certainly
Determine only to manage core actively from metering core access evidence, then data have been shown in management core.It can not achieve metering core actively
It is shown to management core access evidence, then data in metering core.And kilowatt meter reading-out system is by managing core to metering core number of request
According to so server, client role cannot be exchanged.In addition, the firmware of management core needs often to upgrade, management core is new
The data and final display bitmap data for increasing display are unpredictable for metering core.It needs while rising when updating and management core
Grade metering core, could correctly show.But metering core program cannot be upgraded by IR46 requirement.
Existing scheme, in order to keep display data real-time synchronous with metering core, management core needs inquiry metering in real time
Core data.Real-time query mode occupies too many management core resource and SPI communication bandwidth.Reduce management core obtain metering core its
The efficiency of his data and the efficiency for managing core itself.
Summary of the invention
In view of the above drawbacks of the prior art, it is an object of the invention to provide a kind of twin-core electric energy meters, realize management
Module data is flexibly shown in metering module；Realize that the electric energy meter of not installing pipe reason module can correctly measure electricity and display；It is real
After the electric energy meter management core program upgrading for now installing management module, even if management display data change, upgrading metering is not needed yet
Core program.Solve the problems, such as that installing pipe reason module is not unable to satisfy vertification regulation requirement.Solves management core program upgrading simultaneously
It is needed when needing to change display while upgrading metering core program and asking for requirement cannot be upgraded by being unsatisfactory for IR46 metering core program
Topic.
First embodiment of the invention provides a kind of twin-core electric energy meter, and the electric energy meter includes metering module and management module,
The metering module is connected to the management module by SPI communication interface；
The metering module includes metering core, display and display button, and the management module includes management core；
The metering core is internally provided with video memory, for caching all video memory frames for being output to the display；
The metering core is connected to the display by the video memory；
The video memory is made of multiple metering video memory frames and multiple management video memory frames；
The metering video memory frame is used to cache each framing bit figure of metering core internal data；
The management video memory frame is used for each framing bit figure of cache management core forward data；
The display button is connected to the display pin of the metering core, for switching the current video memory frame of the video memory.
Optionally, quantity of the metering video memory frame in the video memory is fixed, and the video memory frame in the metering video memory
It is total corresponding with most display screen number demands.
Optionally, the video memory frame in the video memory is provided with number.
Second embodiment of the invention proposes a kind of display methods of twin-core electric energy meter, and this method includes:
The video memory frame of video memory inside metering core is respectively allocated to metering module and management module；
Determine that management core will need the data for updating display to be converted to display bitmap simultaneously when needing to update display managing core
Metering core is issued by SPI communication mouth；
Determine that metering core will need the data for updating display to be converted to display bitmap simultaneously when needing to update display in metering core
The corresponding video memory of deposit metering display frame；
Metering core has detected whether to receive management core SPI communication write request, is receiving display bitmap that management core is sent
In the case of, the display bitmap deposit management that core is sent will be managed and show the corresponding video memory of frame.
Optionally, the data that update will be needed to be converted to display bitmap in metering core and to be stored in metering video memory frame corresponding aobvious
After depositing, or；
After managing the corresponding video memory of bitmap deposit management display frame that core is sent, this method also includes, in the aobvious of deposit
When to deposit frame be the video memory frame currently shown, metering core label display updates mark.
Optionally, this method also includes, and the aobvious time is taken turns in metering core setting, reach it is described take turns the aobvious time when, metering core will
The video memory frame of next number is set as current video memory frame in video memory, and juxtaposition display updates request flag.
Optionally, this method also includes to show key by pinch roller, the video memory frame of number next in video memory is arranged metering core
For current video memory frame, juxtaposition display updates request flag.
Optionally, before current video memory frame feeding display being shown, this method also includes described in metering core checks
Display updates request flag.
By adopting the above-described technical solution, the present invention has the advantage that:
1, do not change twin-core server-client communication model, do not change role of the twin-core in traffic model yet, realize
Management core data are flexibly shown in metering core；
2, meet the not upgradeable requirement of IR46 metering core program, after management core program upgrading, changing display not
It needs to upgrade metering core.
3, display and the same amount of data of existing scheme, SPI bandwidth occupancy reduce.
Other advantages, target and feature of the invention will be illustrated in the following description to a certain extent, and
And to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, Huo Zheke
To be instructed from the practice of the present invention.
Detailed description of the invention
Detailed description of the invention of the invention is as follows:
Fig. 1 is the structural block diagram of electric energy meter of the invention；
Fig. 2 is the electric energy meter display methods flow chart of the embodiment of the present invention；
Fig. 3 is the video memory data structure diagram of the embodiment of the present invention.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
As described in Figure 1, a kind of twin-core electric energy meter of the invention, the electric energy meter include metering module and management module, institute
It states metering module and the management module is connected to by SPI communication interface；
The metering module includes metering core, display and display button, and the management module includes management core；
The metering core is internally provided with video memory, for caching all video memory frames for being output to the display；
The metering core is connected to the display by the video memory；
The video memory is made of multiple metering video memory frames and multiple management video memory frames；
The metering video memory frame is used to cache each framing bit figure of metering core internal data；
The management video memory frame is used for each framing bit figure of cache management core forward data；
The display button is connected to the display pin of the metering core, for switching the current video memory frame of the video memory.
As shown in Figure 1, twin-core table includes metering core and management core two subsystems, SPI mouthfuls are used between two subsystems
Connection.It is communicated with client-server model, wherein metering core is server, and Xiang Guanli core provides reading data and sets
The service of setting.Management core is client, initiates to request from management core to metering core, and metering core is responded, and metering core cannot be actively
Request is initiated to management core.
Metering bobbin subsystem includes metering chip, metering single-chip microcontroller, metering memory, metering RS485 port, clock core
Piece, Clock battery, super capacitor, multi-functional output, display, display button, infrared communication mouth etc..
Managing bobbin subsystem includes management single-chip microcontroller, management memory, safety chip, management RS485 port, load control
System.
Optionally, quantity of the metering video memory frame in the video memory is fixed, and the video memory frame in the metering video memory
It is total corresponding with most display screen number demands.
Optionally, the video memory frame in the video memory is provided with number.
As shown in Fig. 2, metering core inner part meets the video memory array of demand maximum display screen number in future, front face with one
Divide video memory fixed allocation to show to metering core data to use, since metering core program is not upgradeable, which is solid
Change.Aft section video memory is distributed to management core and is used, when management core shows that data screen is less, video memory tail portion null data.
Current screen serial number is the position indicator pointer that a current display uses that video memory, when key wheel is aobvious or self-timing wheel is aobvious, when
Preceding screen serial number adds 1, moves down, switching display content, when current screen serial number reaches the last one management core video memory, is circulated back to
1st screen display is deposited.
On the basis of previous embodiment, twin-core electric energy meter system power supply uses the transformer of electrical isolation in the present embodiment
The mode of multiple-channel output winding provides the power supply being mutually isolated to metering module and management module, management module power supply damage respectively
The bad normal work for not interfering with metering module.
As shown in Figure 1, metering module includes voltage sample, current sample, metering chip, metering core, metering memory, meter
Measure RS485 port, clock chip, Clock battery, super capacitor, multi-functional output, display, display button, infrared communication
Mouthful etc..
Voltage sampling circuit connects the AD sampling pin of metering chip with current sampling circuit, and metering chip passes through the pin
The analog quantitys such as sampled voltage, electric current, frequency；
Metering chip is connect with metering core by UART, and FM33G045 metering core is used in the present embodiment, and metering chip will
Sampling analog quantity is filtered, amplifies, AD conversion, after digital operation, by the voltage being calculated, electric current, frequency, power, function
The electric parameters such as rate factor and electric energy data send metering core to by the UART port.
Metering core is connect with metering memory using I2C and spi bus, and metering core adds up electric flux, calculates school
Metering memory is stored in after testing.
Clock battery and super capacitor are powered to clock chip jointly using 2 diode unilateral conduction characteristics, system electricity
It is charged by diode unilateral conduction characteristic to super capacitor in source.
When twin-core electric energy meter system power supply normal power supply, twin-core electric energy meter system power supply charges to super capacitor, super electricity
Hold voltage and be higher than cell voltage, so being powered by super capacitor to clock chip.
When having a power failure, when battery has electricity, the first stage is powered by diode to clock chip by super capacitor, the
Two-stage when super-capacitor voltage is equal to cell voltage, is powered to clock chip jointly by super capacitor and battery.
When sending power failure, when dead battery, first stage second stage is powered by super capacitor, can maintain clock 2
More than it.
Metering core is connect with clock chip by I2C bus, and metering core reads the clock number of clock chip by I2C bus
According to.
Metering core is connect with display by I2C bus, and metering core needs electric parameter, electric flux, clock etc. to be shown
Data are converted to and are stored in corresponding video memory as video memory frame after bitmap, and by video memory data by I2C bus be sent to display into
Row display.
Display button is connected to the input pin of metering core, and metering core detects the decline that the input pin is generated due to key
Display for switching video memory frame number, and is refreshed in edge.
Infrared communication mouth is connected to management core by UART；
Multi-functional delivery outlet is by the multi-functional open-drain delivery outlet of metering core and clock chip second signal open-drain output mouth line with after
Connection；
Management core is connect by spi bus with metering core, and core is managed in the present embodiment using FM33A048 and manages core, management
Core reads the data such as electric parameter, electric flux and the clock that metering core generates by the spi bus.It simultaneously will by the spi bus
Management core needs data display bitmap to be shown to be sent to metering core.
Manage bobbin subsystem include management core, management memory, safety chip, management RS485 port, load control system,
Uplink module, downstream module and bluetooth module.
Management memory is connect by I2C and spi bus with management core；
Safety chip passes through ISO7816 mouthfuls of connection management cores；RS485 port is managed by passing through after light-coupled isolation
UART connection management core；
Load control system by operate a switch, two pins that close a floodgate are connected to management core；
Uplink module, downstream module, bluetooth module pass through UART respectively and are connected to management core；
The second object of the present invention is to provide a kind of display methods of twin-core electric energy meter, twin-core server-client is not changed
Machine traffic model does not change role of the twin-core in traffic model yet, realizes that management core data are flexibly shown in metering core, this hair
Bright method includes:
This method includes:
The video memory frame of video memory inside metering core is respectively allocated to metering module and management module；
Determine that management core will need the data for updating display to be converted to display bitmap simultaneously when needing to update display managing core
Metering core is issued by SPI communication mouth；
Determine that metering core will need the data for updating display to be converted to display bitmap simultaneously when needing to update display in metering core
The corresponding video memory of deposit metering display frame；
Metering core has detected whether to receive management core SPI communication write request, is receiving display bitmap that management core is sent
In the case of, the display bitmap deposit management that core is sent will be managed and show the corresponding video memory of frame.
Optionally, the data that update will be needed to be converted to display bitmap in metering core and to be stored in metering video memory frame corresponding aobvious
After depositing, or；
After managing the corresponding video memory of bitmap deposit management display frame that core is sent, this method also includes, in the aobvious of deposit
When to deposit frame be the video memory frame currently shown, metering core label display updates mark.
Optionally, this method also includes, and the aobvious time is taken turns in metering core setting, reach it is described take turns the aobvious time when, metering core will
The video memory frame of next number is set as current video memory frame in video memory, and juxtaposition display updates request flag.
Optionally, this method also includes to show key by pinch roller, the video memory frame of number next in video memory is arranged metering core
For current video memory frame, juxtaposition display updates request flag.
Optionally, before current video memory frame feeding display being shown, this method also includes described in metering core checks
Display updates request flag.
As shown in figure 3, for the invention shows method flow diagram,
Manage core process:
1, client's machine testing display updates, to determine the need for sending data to metering core；
2, the data of core update are managed after last time being sent display bitmap data and state all collects；
3, the data being collected into and state are converted to the bitmap data that can directly issue display；
4, bitmap data is issued into metering core；
Metering core process:
1, last time is updated into the metering core data updated after metering video memory and state collection；
2, the metering core data and state that are collected into are converted into bitmap data, are stored in metering core correlation video memory, and mark
The video memory updates mark.
3, it checks whether and receives the management new bitmap data of core, if there is new data, be stored in management core correlation video memory, and mark
Remember that the video memory updates mark.
4, it handles display button message and timing wheel shows the time, if desired switching display, then be switched to next screen serial number.
5, it checks that preceding step generates current video memory more new logo or is switched to next screen, then send corresponding video memory content
Enter display to show.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
Finally it should be noted that: the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, to the greatest extent
Invention is explained in detail referring to above-described embodiment for pipe, it should be understood by those ordinary skilled in the art that: still
It can be with modifications or equivalent substitutions are made to specific embodiments of the invention, and without departing from any of spirit and scope of the invention
Modification or equivalent replacement, should all cover within the scope of the claims of the present invention.
Claims (8)
1. a kind of twin-core electric energy meter, which is characterized in that the electric energy meter includes metering module and management module, the metering module
The management module is connected to by SPI communication interface；
The metering module includes metering core, display and display button, and the management module includes management core；
The metering core is internally provided with video memory, for caching all video memory frames for being output to the display；
The metering core is connected to the display by the video memory；
The video memory is made of multiple metering video memory frames and multiple management video memory frames；
The metering video memory frame is used to cache each framing bit figure of metering core internal data；
The management video memory frame is used for each framing bit figure of cache management core forward data；
The display button is connected to the display pin of the metering core, for switching the current video memory frame of the video memory.
2. a kind of twin-core electric energy meter according to claim 1, it is characterised in that: the metering video memory frame is in the video memory
Quantity fix, and it is described metering video memory in video memory frame sum it is corresponding with most display screen number demands.
3. a kind of twin-core electric energy meter according to claim 2, it is characterised in that: the video memory frame in the video memory is provided with volume
Number.
4. a kind of display methods of twin-core electric energy meter, which is characterized in that this method includes:
The video memory frame of video memory inside metering core is respectively allocated to metering module and management module；
Determine that management core will need the data for updating display to be converted to display bitmap and pass through when needing to update display managing core
SPI communication mouth issues metering core；
Determine that metering core will need the data for updating display to be converted to display bitmap and be stored in when needing to update display in metering core
The corresponding video memory of metering display frame；
Metering core has detected whether to receive management core SPI communication write request, the case where receiving the display bitmap that management core is sent
Under, the display bitmap deposit management that core is sent will be managed and show the corresponding video memory of frame.
5. a kind of display methods of twin-core electric energy meter according to claim 4, which is characterized in that will be needed more in metering core
After new data are converted to display bitmap and are stored in the corresponding video memory of metering video memory frame, or；
After managing the corresponding video memory of bitmap deposit management display frame that core is sent, this method also includes, in the video memory frame of deposit
For currently show video memory frame when, metering core label display update mark.
6. a kind of display methods of twin-core electric energy meter according to claim 5, which is characterized in that this method also includes to count
Measure core setting and take turns the aobvious time, reach it is described take turns the aobvious time when, metering core sets the video memory frame of number next in video memory to
Current video memory frame, juxtaposition display update request flag.
7. a kind of display methods of twin-core electric energy meter according to claim 6, which is characterized in that this method also includes to press
Pinch roller shows key, and the video memory frame of number next in video memory is set current video memory frame by metering core, and juxtaposition display updates request
Mark.
8. a kind of display methods of twin-core electric energy meter according to claim 6 or 7, which is characterized in that by current video memory frame
Before feeding display is shown, this method also includes that metering core checks that the display updates request flag.
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Cited By (5)
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| CN112098924A (en) * | 2020-11-04 | 2020-12-18 | 南方电网数字电网研究院有限公司 | Interactive function testing method and device based on double-core intelligent electric meter |
| CN112305305A (en) * | 2020-02-21 | 2021-02-02 | 贵州电网有限责任公司 | Isolation processing system between two cores of modular electric energy meter |
| CN112698068A (en) * | 2020-12-08 | 2021-04-23 | 烟台科大正信电气有限公司 | Internet of things modular electric energy meter capable of monitoring temperature of terminal block |
| CN112858993A (en) * | 2021-02-20 | 2021-05-28 | 南方电网数字电网研究院有限公司 | Double-core electric energy meter test system |
| CN114764959A (en) * | 2021-01-13 | 2022-07-19 | 辽宁思凯科技股份有限公司 | Double-core intelligent water meter |
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| 王立州 等: "基于IＲ46 标准的新型智能双芯电表设计", 《自动化仪表》 * |
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| CN112305305A (en) * | 2020-02-21 | 2021-02-02 | 贵州电网有限责任公司 | Isolation processing system between two cores of modular electric energy meter |
| CN112098924A (en) * | 2020-11-04 | 2020-12-18 | 南方电网数字电网研究院有限公司 | Interactive function testing method and device based on double-core intelligent electric meter |
| CN112698068A (en) * | 2020-12-08 | 2021-04-23 | 烟台科大正信电气有限公司 | Internet of things modular electric energy meter capable of monitoring temperature of terminal block |
| CN114764959A (en) * | 2021-01-13 | 2022-07-19 | 辽宁思凯科技股份有限公司 | Double-core intelligent water meter |
| CN112858993A (en) * | 2021-02-20 | 2021-05-28 | 南方电网数字电网研究院有限公司 | Double-core electric energy meter test system |
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