CN113341215A - Double-core intelligent ammeter - Google Patents
Double-core intelligent ammeter Download PDFInfo
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- CN113341215A CN113341215A CN202110492048.9A CN202110492048A CN113341215A CN 113341215 A CN113341215 A CN 113341215A CN 202110492048 A CN202110492048 A CN 202110492048A CN 113341215 A CN113341215 A CN 113341215A
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- 238000004891 communication Methods 0.000 claims abstract description 27
- 230000004044 response Effects 0.000 claims description 70
- 238000012545 processing Methods 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 9
- 239000004973 liquid crystal related substance Substances 0.000 claims description 7
- 230000008014 freezing Effects 0.000 claims description 4
- 238000007710 freezing Methods 0.000 claims description 4
- 230000003993 interaction Effects 0.000 abstract description 10
- 238000005259 measurement Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- 230000002457 bidirectional effect Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- 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
Abstract
The invention relates to a double-core intelligent electric meter, which comprises: the metering core comprises a metering display unit; the management core comprises a communication module and a plurality of application modules, each application module is a basic application module and N expansion application modules, and N is a positive integer; each application module comprises a plurality of functional units, and one functional unit of the basic application module is a management display unit; the communication module comprises a virtual bus unit and a metering management unit, and each application module is in communication connection with the virtual bus unit so as to transmit data between two different application modules; the virtual bus unit is also in communication connection with the metering management unit, the metering management unit is also in communication connection with the metering display unit, and the management display unit is used for controlling the metering display unit to display. The double-core intelligent electric meter adopts the multi-thread task logic through the virtual bus unit, so that a plurality of tasks can be processed simultaneously, and the stable and reliable execution of data interaction tasks among all application modules is ensured.
Description
Technical Field
The invention relates to the technical field of electric energy metering, in particular to a double-core intelligent electric meter.
Background
With the rapid promotion and implementation of the construction of the smart power grid in China, the reserve of the smart power meter is continuously and rapidly increased as an important component of the electricity utilization link. The electric energy meter is taken as a typical legal measuring instrument, undertakes the electric power trade settlement task, has the functions of measuring basic electricity consumption of the traditional electric energy meter, and also has intelligent functions of bidirectional multi-rate measurement, user side control, bidirectional data communication in various data transmission modes, electricity larceny prevention and the like in order to adapt to the use of a smart grid and new energy.
The traditional intelligent electric meter adopts a single-thread programming mode for a plurality of application modules, so that when a plurality of tasks need to be processed, the next task can be processed only after one task is processed, and the phenomenon of blocking can be caused.
Disclosure of Invention
In view of the above, it is necessary to provide a two-core smart meter.
A dual core smart meter comprising:
the metering core comprises a metering display unit;
the management core comprises a communication module and a plurality of application modules, wherein each application module is a basic application module and N expansion application modules respectively, and N is a positive integer; each application module comprises a plurality of functional units, and one of the functional units of the basic application module is a management display unit; the communication module comprises a virtual bus unit and a metering management unit, and each application module is in communication connection with the virtual bus unit so as to perform data transmission between two different application modules; the virtual bus unit is also in communication connection with the metering management unit, the metering management unit is also in communication connection with the metering display unit, and the management display unit is used for controlling the metering display unit to display.
The double-core intelligent electric meter is different from the traditional single-thread task processing between the application modules, and adopts the multi-thread task logic through the virtual bus unit, so that a plurality of tasks can be processed simultaneously, and the stable and reliable execution of data interaction tasks between the application modules is ensured. And the management display unit, the rest of the functional units in the basic application module or the expansion application module and the metering display unit are interacted through the virtual bus unit and the metering management unit, the virtual bus unit has the function of sharing a memory, so that the metering display unit is prevented from directly acquiring data from the management display unit, the rest of the functional units in the basic application module or the expansion application module, the interaction between the management display unit, the rest of the functional units in the basic application module or the expansion application module and other functional units or other application modules is prevented from being influenced, and the accuracy of the display result of the dual-core intelligent electric meter can be ensured.
In one embodiment, the rest of the functional units of the basic application module comprise a time-sharing metering unit, a freezing unit and a fee control unit.
In one embodiment, a pair of virtual read-write channels is respectively disposed between each application module and the virtual bus unit for data transmission, and the virtual bus unit is configured to receive channel data sent by the application module through the corresponding virtual read-write channel, analyze the channel data to obtain an address identifier and operation data included in the channel data, and send the operation data to the corresponding application module through the corresponding virtual read-write channel according to the address identifier;
the application module sending the channel data and the application module receiving the operation data obtained after the channel data are analyzed are different application modules.
In one embodiment, the virtual bus unit is further configured to send a preset command to a part of the application modules in an on-demand manner or send a preset command to all the application modules in a broadcast manner.
In one embodiment, the processing mode when the management display unit controls the metering display unit to display comprises a key triggering mode;
in the key triggering mode, the metering display unit acquires a key operation command and sends the key operation command to the metering management unit, and the virtual bus unit sends the key operation command to the management display unit through the corresponding virtual read-write channel; and the management display unit sends response data to the virtual bus unit according to the key operation command and forwards the response data to the metering display unit through the metering management unit so as to control the metering display unit to display.
In one embodiment, after the management display unit obtains the key operation command, a key display list is obtained according to the key operation command, display data is obtained according to identification information of the key display list, the display data is translated into a display virtual truth table, and response data is organized based on the display virtual truth table to obtain the response data.
In one embodiment, the processing mode when the management display unit controls the metering display unit to display comprises a timing trigger mode;
and in the timing trigger mode, the management display unit sends response data in the current key display mode or the current display-following mode to the virtual bus unit based on the timing time of the timing trigger mode, and forwards the response data to the metering display unit through the metering management unit so as to control the metering display unit to display.
In one embodiment, the management display unit acquires a key display list or a circular display list according to a current display mode in the timing trigger mode, obtains display data according to identification information of the key display list or the circular display list, translates the display data into a display virtual truth table, and organizes response data based on the display virtual truth table to obtain the response data.
In one embodiment, the metering display unit further generates response data after receiving the response data and sends the response data to the metering management unit, and the virtual bus unit sends the response data to the management display unit through the corresponding virtual read-write channel.
In one embodiment, the metering display unit comprises a liquid crystal display, and the management display unit controls the metering display unit to display through the liquid crystal display.
Drawings
FIG. 1 is a block diagram of a two-core smart meter according to an embodiment;
FIG. 2 is a system architecture diagram of a management core in one embodiment;
fig. 3 is a schematic diagram of a communication architecture of the dual-core smart meter according to an embodiment.
Description of reference numerals:
10. a management core; 20. a metering core; 11. a base application module; 12. expanding an application module; 13. a communication module; 111. a functional unit; 131. a virtual bus unit; 132. a metering management unit; 21. a measurement display unit; 111a, a management display unit; 111b, a time-sharing metering unit; 111c, a freezing unit; 111d, a fee control unit; 31. an application layer; 32. an intermediate layer; 33. a drive layer; 133. a virtual read-write channel; 331. a bottom layer driving unit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In one embodiment, referring to fig. 1, a dual-core smart meter is provided. The dual core smart meter includes a metering core 20 and a management core 10. The metering core 20 includes a metering display unit 21. The management core 10 includes a communication module 13 and a plurality of application modules. Each application module is a basic application module 11 and N expansion application modules 12, where N is a positive integer. Each application module includes a plurality of functional units 111. One of the functional units 111 of the basic application module 11 is a management display unit. The communication module 13 includes a virtual bus unit 131 and a metering management unit 132. Each application module is communicatively connected to the virtual bus unit 131 for data transfer between two different application modules. The virtual bus unit 131 is also connected to the metering management unit 132 in communication, the metering management unit 132 is also connected to the metering display unit 21 in communication, and the management display unit 111a is used to control the metering display unit 21 to display.
Specifically, the metering core 20 and the management core 10 of the two-core smart meter are independently arranged. The metering core 20 and the management core 10 may each include a Micro Controller Unit (MCU) to process tasks of the metering core 20 and tasks of the management core 10, respectively, so as to meet the current requirements for independent metering. The metering core 20 includes a metering display unit 21, and the metering display unit 21 may include a display device such as a display screen (e.g., a liquid crystal display screen) for displaying metering data, fee data and the like of the dual-core smart meter.
Referring to fig. 1 and 2, the management core 10 may be configured in a modular hierarchical manner, and may specifically include a driver layer 33, an intermediate layer 32, and an application layer 31. The driving layer 33 may include a bottom layer driving unit 331 for bottom layer driving. The virtual bus unit 131 and the metering management unit 132 may be provided to the middle layer 32. Each Application module (APP) may be located in the Application layer 31. The functional units 111 included in the basic application module 11 and the N extension application modules 12 may be different from each other. One of the functional units 111 in the basic application module 11 may be a management display unit 111a, and the other functional units 111 may be a time-sharing metering unit 111b, a freezing unit 111c, a fee control unit 111d, and the like. The functional units 111 in each extended application module 12 can be set according to specific requirements.
The functional units 111 in the extension application module 12 may directly perform data transmission without using a communication medium, and the functional units 111 in the base application module 11 may also directly perform data transmission without using a communication medium. For example, inside the basic application module 11, the management display unit 111a may directly obtain the metering data of the time-sharing metering unit 111 b.
Each application module is in communication connection with the virtual bus unit 131 to perform data transmission between two different application modules, that is, when two application modules interact with each other, data needs to be transmitted to the virtual bus unit 131 first, and then the data needs to be forwarded to the corresponding application module by using the virtual bus unit 131. Data interaction tasks among a plurality of application modules can be simultaneously performed through the virtual bus unit 131, so that data interaction among the application modules does not interfere with each other. In the embodiment, unlike the traditional single-thread task processing between the application modules, a multi-thread task logic and a modular hierarchical design are adopted, so that a plurality of tasks can be processed simultaneously, and the stable and reliable execution of data interaction tasks between the application modules is ensured. When data interaction between the application modules is performed, data may be transmitted to all the functional units 111 in the application modules, or data may be transmitted to designated functional units 111 in the application modules, and the number of the designated functional units 111 may be one or more.
The virtual bus unit 131 is also communicatively connected to the metering management unit 132, and the virtual bus unit 131 may forward the received data to the metering management unit 132, and the metering management unit 132 may also forward the received data to the virtual bus unit 131. The metering management unit 132 is further in communication connection with the metering display unit 21, the management display unit 111a may transmit data to the virtual bus unit 131, the virtual bus unit 131 forwards the data to the metering management unit 132, and the metering management unit 132 forwards the data to the metering display unit 21, so as to control the metering display unit 21 to display. Specifically, the data displayed in the meter display unit 21, the display state, and the like may be controlled in accordance with the data sent from the management display unit 111 a. The display state may include a backlight of the display screen, a pull-out light peripheral, and the like.
In some examples, the management display unit 111a may obtain the metering data from other functional units 111 in the basic application module 11, such as the time-sharing metering unit 111b, and control the data displayed by the metering display unit 21.
In other examples, the management display unit 111a may acquire data from any one of the extended application modules 12 and control the metering display unit 21 to display the data.
In still other examples, the other functional units 111 or the extended application module 12 in the base application module 11 may directly transmit data to the virtual bus unit 131 and forward the data to the metering and displaying unit 21 through the metering management unit 132, and the management and displaying unit 111a may control the metering and displaying unit 21 to display the data.
In some examples, the metering display unit 21 may also send data to the metering management unit 132, and the metering management unit 132 forwards the data to the virtual bus unit 131, and the virtual bus unit 131 forwards the data to the management display unit 111 a. The processing mode of the management display unit 111a and the like may be controlled in accordance with the data sent from the metering display unit 21.
The double-core intelligent electric meter is different from the traditional single-thread task processing between the application modules, and adopts multi-thread task logic through the virtual bus unit 131, so that a plurality of tasks can be processed simultaneously, and the stable and reliable execution of data interaction tasks between the application modules is ensured. In addition, the management display unit 111a, the rest of the functional units 111 in the basic application module 11 or the extended application module 12 and the metering display unit 21 interact with each other through the virtual bus unit 131 and the metering management unit 132, and the virtual bus unit 131 has a function of "sharing a memory", so that the metering display unit 21 is prevented from directly acquiring data from the management display unit 111a, the rest of the functional units 111 in the basic application module 11 or the extended application module 12, and the interaction between the management display unit 111a, the rest of the functional units 111 in the basic application module 11 or the extended application module 12 and other functional units 111 or other application modules is prevented from being influenced, and the accuracy of the display result of the dual-core smart meter can be ensured.
In some examples, a pair of virtual read-write channels is respectively disposed between each application module and the virtual bus unit 131 for data transmission. The virtual bus unit 131 is configured to receive channel data sent by the application module through the corresponding virtual read-write channel, analyze the channel data to obtain an address identifier and operation data included in the channel data, and send the operation data to the corresponding application module through the corresponding virtual read-write channel according to the address identifier. The application module for sending the channel data and the application module for receiving the operation data obtained after the analysis of the channel data are different application modules.
Specifically, referring to fig. 1 and fig. 3 (fig. 3 only shows a pair of virtual read/write channels 133 between the N expansion application modules 12 and the virtual bus unit 131), the number of the virtual read/write channels 133 may be equal to and correspond to the number of the application modules one to one. The pair of virtual read and write channels 133 may include a virtual read channel and a virtual write channel. Each application module may send channel data to the virtual bus unit 131 through the corresponding virtual read channel, and the virtual bus unit 131 may send channel data to the corresponding application module through the virtual write channel. Each pair of virtual read-write channels 133 may have a corresponding address identification. The channel data may contain address identification and operation data. The address identifier in the channel data may include an address identifier of a virtual read/write channel 133 corresponding to the application module that needs to be sent, so that the virtual bus unit 131 may analyze the channel data after receiving the channel data to obtain the address identifier and the operation data, and send the operation data to the corresponding application module through the corresponding virtual read/write channel 133 according to the address identifier. In other examples, the address identifier may further include an address identifier of the virtual read-write channel 133 that sends the channel data, so that the virtual bus unit 131 may identify which application module sent the channel data according to the address identifier. In this embodiment, each application module corresponds to a pair of virtual read/write channels 133, so that interaction between each application module and the virtual bus unit 131 is not interfered with each other.
In some examples, the virtual bus unit 131 is further configured to send the preset command to a part of the application modules in an on-demand form or to send the preset command to all the application modules in a broadcast form.
Specifically, in the on-demand mode, the virtual bus unit 131 may send the same preset command to a part of the application modules through the corresponding virtual read/write channel 133 according to the control command. In the broadcast mode, the virtual bus unit 131 may send the same preset command to all the application modules through all the virtual read/write channels 133. In this embodiment, each application module has a pair of corresponding virtual read-write channels 133, so that in a click mode or a broadcast mode, the virtual bus unit 131 can simultaneously send a preset command to a part of the application modules or all the application modules, thereby improving the processing efficiency and reducing the error rate.
In some examples, the processing mode when the management display unit 111a controls the display of the metering display unit 21 includes a key trigger mode. In the key triggering mode, the metering display unit 21 obtains a key operation command and sends the key operation command to the metering management unit 132, and the virtual bus unit 131 sends the key operation command to the management display unit 111a through the corresponding virtual read/write channel 133. The management display unit 111a transmits the response data to the virtual bus unit 131 according to the key operation command, and forwards the response data to the metering display unit 21 through the metering management unit 132 to control the metering display unit 21 to display.
Specifically, in the key trigger mode, the management display unit 111a is in the slave mode. The metering display unit 21 may comprise a touch screen or comprise a display screen and input devices such as a mouse, keyboard, etc. An operator can input a key operation command through a touch screen or an input device, so that the metering display unit 21 can obtain the key operation command, and the metering display unit 21 can encode the key operation command to form a metering core key request message and send a serial port request to the metering management unit 132. After receiving the serial port request frame, the metering management unit 132 forwards the metering core key request message to the virtual bus unit 131. The measurement core key request message may include address identification information of the virtual read/write channel 133. The virtual bus unit 131 may select a corresponding virtual read/write channel 133 according to the address identification information, thereby sending the measurement core key request message to the management display unit 111 a. The management display unit 111a may decode the measurement core key request message to obtain a key operation command.
The management display unit 111a may obtain corresponding response data according to the key operation command, encode the response data to form a response message, and send the response message to the virtual bus unit 131 through the corresponding virtual read/write channel 133. A virtual read-write channel may also be established between the virtual bus unit 131 and the metering management unit 132 to transmit data, the virtual bus unit 131 may forward the response message to the metering management unit 132 through the virtual read-write channel, and the metering management unit 132 sends the response message to the metering display unit 21. The measurement display unit 21 may decode the response packet to obtain response data, i.e. display data. When sending the response message to the metering display unit 21, the metering management unit 132 may issue the response message in a preset frame format, such as 645 frame format. Under the key triggering mode, the display of the metering display unit 21 is controlled by the key display request command response, and the display timeliness and accuracy can be ensured.
In some examples, after the management display unit 111a obtains the key operation command, the management display unit obtains the key display list according to the key operation command, obtains display data according to the identification information of the key display list, translates the display data into a display virtual truth table, and organizes response data based on the display virtual truth table to obtain response data.
Specifically, the management display unit 111a may determine a key operation according to the key operation command, and then complete the switching of the key display mode, the acquisition of the key display data, and the processing of the status characters according to the key operation. Then, the data of the rest functional units in the basic application module 11 can be acquired according to the identification information of the key display list of the switched key display mode or the data of the extended application module 12 can be acquired by using the virtual bus unit. The management display unit 111a may store a format of a virtual truth table, translate the acquired display data into a display virtual truth table according to the format of the virtual truth table, and organize response data based on the display virtual truth table to obtain response data.
In other examples, the processing mode when the management display unit 111a controls the display of the metering display unit 21 includes a time trigger mode. In the time triggered mode, the management display unit 111a transmits response data in the current key display mode or the current display-by-display mode to the virtual bus unit 131 based on the time of the time triggered mode, and forwards the response data to the metering display unit 21 through the metering management unit 132 to control the metering display unit 21 to display.
Specifically, in the timer trigger mode, the management display unit 111a is in the master mode. The key display mode may be the key activation mode in the above-described embodiment. And in the display circulation mode, various display data can be circularly displayed. In the time triggered mode, the management display unit 111a may store therein a time, such as ten am, a number one per month, and the like. When the timing time arrives, the management display unit 111a encodes the response data in the current key display mode or the display-following mode to form a push message, and may form a display push command frame by displaying the push command, so that the push message is sent to the virtual bus unit 131 through the corresponding virtual read-write channel 133. A virtual read-write channel may also be established between the virtual bus unit 131 and the metering management unit 132 to transmit data, the virtual bus unit 131 may forward the push message to the metering management unit 132 through the virtual read-write channel, and the metering management unit 132 sends the push message to the metering display unit 21. The metering display unit 21 may decode the push packet to obtain response data, i.e. push data. When sending the push message to the metering display unit 21, the metering management unit 132 may issue the push message in a preset frame format, such as 645 frame format.
In this embodiment, in the timing trigger mode, the display management unit 111a may push the response data to the metering display unit 21 in a display push manner to control the metering display unit 21 to display, and may control the metering display unit 21 to actively display without an operator performing a key operation, so as to meet the requirements of a new generation of dual-core smart meters, and ensure stable and reliable execution of the display of the metering display unit 21.
In some examples, the management display unit 111a acquires a key display list or a circular display list according to a current display mode in the timing trigger mode, obtains display data according to the key display list or the circular display list, translates the display data into a display virtual truth table, and organizes response data based on the display virtual truth table to obtain response data.
Specifically, the management display unit 111a may first determine the current display mode, then obtain a response data list (a key display list or a circular display list) according to the current display mode, and obtain data of the remaining functional units 111 in the basic application module 11 according to the response data list or obtain display data of the extended application module 12 by using the virtual bus unit 131. The management display unit 111a may store a format of a virtual truth table, translate the acquired display data into a display virtual truth table according to the format of the virtual truth table, and organize response data based on the display virtual truth table to obtain response data.
In some examples, the metering display unit 21 further generates response data after receiving the response data and transmits the response data to the metering management unit 132, and the virtual bus unit 131 transmits the response data to the management display unit 111a through the corresponding virtual read-write channel 133.
Specifically, the metering display unit 21 may generate response data after receiving the response data and encode the response data to obtain a response message. The metering management unit 132 may receive the response message through a serial port or other communication modes, and forward the response message to the virtual bus unit 131 through the virtual read-write channel. The response reply message may include an address identifier corresponding to the virtual read/write channel 133 of the basic application module 11, and the virtual bus unit 131 selects the corresponding virtual read/write channel 133 according to the address identifier, so as to send the response reply message to the management display unit 111 a. The management display unit 111a may analyze the response message to obtain response data, and may analyze whether the metering display unit 21 receives correct response data according to the response data.
In some examples, the response data is divided into two portions, on-screen main display area data and real-time status area data. The data of the main display area of the screen display can confirm whether the display data is legal or not according to the response data list and the data identification of the display data, and then the data of the screen display which needs to be displayed is converted into a virtual truth table according to the data format of the main display area. The real-time status region data may perform corresponding status character processing according to the running status characters and the parameters configuring the display status, which are obtained from the relevant status characters sent by the basic application module 11 or the extended application module 12, and according to the issued functional units 111 and the status characters, to form a virtual truth table of the real-time status portion.
In some examples, the metering display unit 21 includes a liquid crystal display. The management display unit 111a is used to control the metering display unit 21 to perform display through the liquid crystal display.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A two-core smart meter, comprising:
the metering core comprises a metering display unit;
the management core comprises a communication module and a plurality of application modules, wherein each application module is a basic application module and N expansion application modules respectively, and N is a positive integer; each application module comprises a plurality of functional units, and one of the functional units of the basic application module is a management display unit; the communication module comprises a virtual bus unit and a metering management unit, and each application module is in communication connection with the virtual bus unit so as to perform data transmission between two different application modules; the virtual bus unit is also in communication connection with the metering management unit, the metering management unit is also in communication connection with the metering display unit, and the management display unit is used for controlling the metering display unit to display.
2. The two-core smart meter of claim 1, wherein the remaining functional units of the base application module comprise a time-sharing metering unit, a freezing unit and a fee control unit.
3. The two-core smart electric meter according to claim 1, wherein a pair of virtual read-write channels is respectively disposed between each of the application modules and the virtual bus unit for data transmission, and the virtual bus unit is configured to receive channel data sent by the application modules through the corresponding virtual read-write channels, analyze the channel data to obtain an address identifier and operation data included in the channel data, and send the operation data to the corresponding application module through the corresponding virtual read-write channel according to the address identifier;
the application module sending the channel data and the application module receiving the operation data obtained after the channel data are analyzed are different application modules.
4. The two-core smart meter of claim 3, wherein the virtual bus unit is further configured to send a preset command to some of the application modules on demand or to all of the application modules in broadcast.
5. The two-core smart meter according to claim 3, wherein the processing mode of the management display unit when controlling the metering display unit to display comprises a key triggering mode;
in the key triggering mode, the metering display unit acquires a key operation command and sends the key operation command to the metering management unit, and the virtual bus unit sends the key operation command to the management display unit through the corresponding virtual read-write channel; and the management display unit sends response data to the virtual bus unit according to the key operation command and forwards the response data to the metering display unit through the metering management unit so as to control the metering display unit to display.
6. The dual-core smart meter according to claim 5, wherein after the management display unit obtains the key operation command, a key display list is obtained according to the key operation command, display data is obtained according to identification information of the key display list, the display data is translated into a display virtual truth table, and response data is organized based on the display virtual truth table to obtain the response data.
7. The two-core smart meter according to claim 3, wherein the processing mode of the management display unit when controlling the metering display unit to display comprises a timing trigger mode;
and in the timing trigger mode, the management display unit sends response data in the current key display mode or the current display-following mode to the virtual bus unit based on the timing time of the timing trigger mode, and forwards the response data to the metering display unit through the metering management unit so as to control the metering display unit to display.
8. The two-core smart meter according to claim 7, wherein the management display unit obtains a key display list or a circular display list according to a current display mode in the timing trigger mode, obtains display data according to identification information of the key display list or the circular display list, translates the display data into a display virtual truth table, and organizes response data based on the display virtual truth table to obtain the response data.
9. The two-core smart meter according to claim 5 or 7, wherein the metering display unit further generates response data after receiving the response data and sends the response data to the metering management unit, and the virtual bus unit sends the response data to the management display unit through the corresponding virtual read-write channel.
10. The two-core smart meter of claim 1, wherein the metering display unit comprises a liquid crystal display, and the management display unit controls the metering display unit to display through the liquid crystal display.
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