CN113406375B - Intelligent ammeter system sharing storage and display device and sharing method thereof - Google Patents
Intelligent ammeter system sharing storage and display device and sharing method thereof Download PDFInfo
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- CN113406375B CN113406375B CN202110770855.2A CN202110770855A CN113406375B CN 113406375 B CN113406375 B CN 113406375B CN 202110770855 A CN202110770855 A CN 202110770855A CN 113406375 B CN113406375 B CN 113406375B
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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
- G01R11/56—Special tariff meters
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1454—Digital output to display device ; Cooperation and interconnection of the display device with other functional units involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
Abstract
The invention relates to an intelligent ammeter system sharing a storage and display device and a sharing method thereof, wherein the intelligent ammeter system comprises at least two ammeter bodies and a display device, the ammeter bodies comprise first communication units, the display device comprises second communication units, the display device further comprises a storage module, the storage module is in wireless communication with the at least two ammeter bodies and is used for storing historical data of the at least two ammeter bodies before preset time, and the historical data sent to the display device is deleted by the at least two ammeter bodies simultaneously; the historical data is power consumption data before preset time. In the intelligent ammeter system, the ammeter body sends the historical data to the display device for storage, and meanwhile, the historical data sent to the display device is deleted, so that the storage space of the ammeter body can be continuously released, and the problem of insufficient data storage caused by the increase of time is solved.
Description
Technical Field
The invention relates to the technical field of meters, in particular to an intelligent electric meter system sharing a storage and display device and a sharing method thereof.
Background
The intelligent electric meter is a metering instrument used for metering the electricity consumption of a user and carrying out remote data transmission, such as remote meter reading. The intelligent electric meter comprises a general circuit part and a display part, wherein the display part is mainly used for displaying the electricity consumption data of a user.
In order to guarantee the privacy and property safety of users, the applicant proposes an intelligent electric meter with a privacy protection function in 31.8.2020, with the publication number of CN 112034249A. In the scheme, the electric meter body and the display part of each electric meter are separated and independent from each other, and the display part is installed in a user home, so that electricity data is prevented from being peeped by people, and the safety of the user is further guaranteed. However, this solution also has certain drawbacks, such as that each electricity meter is actually still provided with a display device, the utilization rate of each display device is low, and the cost of the electricity meter cannot be reduced.
All data of the traditional electric meter are stored in a storage module of the electric meter, and are called from the electric meter when a user needs to inquire past historical data. However, as time increases, the data of the electric meter is more and more, and the data stored in the storage module of the electric meter is more and more, so that the storage pressure of the electric meter is very large, and the data is likely to be distorted or missing due to the increase of the data volume, so that the problem of inaccurate data can occur when a user inquires historical data.
Disclosure of Invention
The invention aims to provide an intelligent ammeter system sharing a storage and display device and a sharing method thereof, so as to reduce the storage pressure of the ammeter, avoid excessively considering the storage capacity of the ammeter during the factory setting of the ammeter and reduce the production cost.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
the intelligent ammeter system comprises at least two ammeter bodies and a display device, wherein each ammeter body comprises a first communication unit, the display device comprises a second communication unit, the display device further comprises a storage module, the storage module is communicated with the at least two ammeter bodies and is used for storing historical data of the at least two ammeter bodies before preset time, and the historical data sent to the display device is deleted by the at least two ammeter bodies simultaneously; the historical data is power consumption data before preset time.
In the scheme, the ammeter body sends the historical data to the display device for storage, and meanwhile, the historical data sent to the display device are deleted, so that the storage pressure of the ammeter body can be continuously released. And when the ammeter body is produced in a factory, the design of the storage capacity of the ammeter body is not considered too much, and the production cost of the ammeter body is reduced.
Still further, the display device further includes a third communication unit for communicating with the power supply enterprise server.
In the above scheme, the display device may be connected to and communicate with all the electricity meter bodies, and may also be connected to and communicate with the power supply enterprise server, so as to send some related alarm instructions to the power supply enterprise server, and when the storage capacity of the display device reaches a certain amount, ask the power supply enterprise server whether to delete the stored electricity consumption data or upload the electricity consumption data to the power supply enterprise server.
Furthermore, the ammeter body further comprises a timing unit, wherein the timing unit is used for setting preset time, recording starting time and recording interval period, and sending historical data before the preset time to the display device.
In the above scheme, the setting of the preset time is not limited, for example, in different regions or cells, the preset time may be set to be one month, one week, one day, etc. according to the actual needs of the user or the administrator, and a flexible historical data uploading manner is provided.
Furthermore, the historical data is stored in the display device in a list form, the list does not contain time information, the time information of the historical data is calculated by the position of the historical data stored in the list, and the starting time and the interval period of the display device for storing the historical data are calculated.
In the above scheme, no time sequence exists, that is, no matter how many electric meter bodies exist, no time information corresponding to the historical data exists, the time information is obtained by calculating the positions in the historical data storage and list, the starting time of the display device for storing the historical data and the interval period, so that the storage capacity of the historical data stored in the display device is reduced as much as possible.
Furthermore, the display device further comprises a display unit and an identification unit, wherein the identification unit is used for identifying the user identity information matched with each electric meter body and transmitting the user identity information to the corresponding electric meter body, and the display unit is used for displaying the information transmitted by the electric meter body and the historical data of the electric meter body.
Furthermore, the identification unit comprises an electric card socket and a card reading module, and the card reading module is used for reading information in an electric card inserted into the electric card socket and transmitting the read user identity information to the electric meter body; or the identification unit comprises a scanning head and an identification module, the scanning head is used for scanning codes provided by users, and the identification module is used for identifying user identity information from the codes and transmitting the user identity information to the electric meter body.
In the scheme, the identification unit can accurately distinguish which user's electric meter data needs to be displayed currently, so that data errors are avoided.
On the other hand, the invention also provides a sharing method of the smart meter system for sharing the storage and display device, which comprises the following steps:
the method comprises the steps that a display device sets preset time, records starting time and recording interval period, sends a communication parameter setting connection request to an ammeter body, sends the preset time, the recording starting time and the recording interval period to the ammeter body after connection is successful, the ammeter body starts to count the preset time, and the display device starts to count the preset time;
after the preset time is up, the display device sends a communication data uploading connection request to the ammeter bodies, after the connection is successful, a historical data uploading command is sent to each ammeter body in sequence, after the ammeter bodies receive the commands, the historical data before the preset time are sent to the display device to be stored, the ammeter bodies delete the historical data sent to the display device at the same time, and the timing of the preset time of the ammeter bodies is restarted; and after the historical data of the previous ammeter body is received, the display device sends a command of uploading the historical data to the next ammeter body.
In a further optimized scheme, the preset time is one month, the electric meter body sends the historical data which are sequentially stored at intervals before one month to the display device for storage, and the electric meter body deletes the historical data which are sent to the display device for storage.
In a further optimized scheme, the display device sends a synchronous clock command to the electric meter body periodically so as to ensure the timing accuracy of the electric meter body.
In a further optimized scheme, the display device is provided with a communication time threshold, and if the display device cannot receive historical data of the corresponding ammeter body within the communication time threshold, the display device gives an alarm and sends an exception report to the power supply enterprise server.
In the further optimized scheme, the ammeter body has a function of actively sending alarm information to the display device, and the display device receives the alarm information sent by the ammeter body and then sends the alarm information to the power supply enterprise server.
In a further optimized scheme, the power supply enterprise server sends a device state query command to the display device periodically, the display device sends device state information to an ammeter body in communication connection with the display device, if the ammeter body information is not received or the abnormal state information of the ammeter body is received, the ammeter body is judged to be abnormal, otherwise, the ammeter body is judged to be normal, and the ammeter body information and the state information of the display device are sent to the power supply enterprise server.
Compared with the prior art, the intelligent electric meter system provided by the invention has the following technical advantages:
1) the ammeter body sends the historical data to the display device for storage, and meanwhile, the historical data sent to the display device are deleted, so that the storage pressure of the ammeter body can be continuously released. And when the ammeter body is produced in a factory, the design of the storage capacity of the ammeter body is not considered too much, and the production cost of the ammeter body is reduced.
2) The time sequence of the historical data of each electric meter is not saved, and the calculation of the time sequence can be completed by recording the starting time, the storage position and the recording interval time. That is, no matter how many meter bodies exist, the time information of the historical data is cancelled, if there are n meter bodies, n groups of time sequences can be saved, and the historical data stored in the display device can be reduced in storage capacity as much as possible.
3) Through the display device shared by all the ammeter bodies, the display device displays the ammeter data of a plurality of users instead of the ammeter data of one user, so that the utilization rate of the display device is improved, and meanwhile, the cost of a large number of display devices is saved.
4) Through separately independent separately with display device and ammeter body for the user need not to look over ammeter data again through opening ammeter case, consequently can be with ammeter case closed management, can avoid then that illegal user steals electricity through modes such as the private cable that connects in ammeter body department.
5) The display device and the ammeter body are separated and independent, and ammeter data and historical data can be checked only under the condition that user identity information is correctly given, so that the ammeter data can only be checked by a user, and the user can only check the ammeter data and the historical data of the user, thereby avoiding illegal behaviors such as burglary and the like caused by judging whether people live or not by checking the ammeter data by illegal personnel.
6) The display device displays the ammeter data of a plurality of users, so that the energy consumption of all display devices during working can be reduced, and energy conservation and environmental protection are realized.
7) Data communication is carried out on a power supply enterprise server through a display device, and the problems that the conventional meter reading technologies such as the current power carrier meter reading scheme and the NB-IOT meter reading technology face the complex and communication pressure for sequentially communicating with each intelligent electric meter body are solved.
8) Through the historical data of a plurality of smart electric meters of a display device centralized storage, can not realize carrying out the capacity upgrade to the storage module in the display device to the ammeter body operation of unpacking.
Other technical advantages of the present invention will be set forth in the following examples.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural diagram of a smart meter system sharing a storage and display device according to an embodiment;
FIG. 2 is a schematic view showing a structure of a display device according to one embodiment;
FIG. 3 is a schematic structural diagram of a display device according to another embodiment;
fig. 4 is a schematic structural diagram of a display device according to still another embodiment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The devices of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present embodiment provides an intelligent electric meter system sharing a storage and display device, including n electric meter bodies and a display device, where n is an integer greater than or equal to 2, the electric meter body includes a first communication unit, and the display device includes a second communication unit, so that the n electric meter bodies and the display device are connected in a wireless network manner, so as to perform data transmission. The n meter bodies can be all arranged in one or more meter boxes, and the display device is independently arranged at other places, such as a public area convenient for all users to reach.
The ammeter body still includes measuring unit, the control unit, and measuring unit is used for carrying out the measurement of power consumption data and gathers, and the control unit is used for ensuring ammeter body normal work, for example control data acquisition, receiving and dispatching etc.. Certainly, the ammeter body also has a power supply unit, and the normal work of whole ammeter is provided the electric energy through external commercial power or built-in battery's mode.
In this scheme, as an improvement of the basic technical solution, please continue to refer to fig. 1, a storage module is arranged in the display device, and meanwhile, the display device sets a preset time, records an initial time and sets an interval period, and after the electric meter body and the display device establish a wireless communication connection, the display device sends the preset time, the initial time and the interval period to the electric meter body. The electric meter body starts to time according to the initial time, the display device starts to time according to the preset time, for example, the initial time is 9:00, the preset time is 9 hours, then the electric meter body starts to time 9 hours before 9:00, the preset time is 9 hours in a descending timing mode, and the historical data of the electric meter body is recorded to be 0. Assuming that the interval period is 10 minutes, the historical data recorded by the meter body is electricity utilization data of the time period of 10 minutes before 9 hours.
The preset time is counted in a descending mode until the preset time is 0, the display device sends a wireless communication data uploading connection request to the ammeter bodies, after the connection is successful, commands for uploading historical data are sent to the ammeter bodies in sequence, after the ammeter bodies receive the commands, the recorded historical data before the preset time are sent to the display device to be stored, and the ammeter bodies delete the historical data sent to the display device at the same time.
The timing of presetting time of ammeter body is when 0 from last time presetting time timing, begins to time again, and according to the circulation, the ammeter body will be uploaded all historical data of record to display device and save, constantly releases the memory capacity of self.
The starting time of each ammeter body is the same, but the display device sends a historical data uploading command to the next ammeter body after the historical data of the previous ammeter body is received. For example, the preset time of the existing n electric meter bodies is 10 days, the starting time is 9:00, the interval period is 10 minutes, and each electric meter body records 10-minute historical data 10 days before the starting time is 9: 00; after the preset time is up, namely the starting time, the display device sends a wireless communication data uploading connection request to all the ammeter bodies, after the connection is successful, the display device sends a historical data uploading command to the first ammeter body, and after the first ammeter body receives the command, the historical data before the preset time is sent to the display device to be stored; after the historical data of the first ammeter body is received, the display device sends a historical data uploading command to the second ammeter body, and finally all the ammeter bodies receive the historical data uploading command sent by the display device. The display device does not simultaneously send the historical data uploading command to all the ammeter bodies, so that the communication channel of the display device is prevented from being blocked.
In this example, the starting time may be a time required to send the history data to the display device for the first time after the electric meter body is put into use, and the starting time may be reset after the display device or the electric meter body is reinitialized. In addition, the setting of the preset time and the interval period is not limited to the limitation of the embodiment, and can be set according to the actual use condition.
After the historical data of each ammeter body is sent to the display device, the historical data are stored in a list mode, the list does not contain time information, and the traditional storage mode is shown in table 1:
TABLE 1
The traditional storage mode is that not only the historical data of each ammeter body needs the corresponding time information, but also all the ammeter bodies are arranged to send the historical data to the display device at the same time, so that data congestion can be caused when the historical data are uploaded simultaneously, and the time information in the list can occupy the memory of the display device.
The list stored in the display device of the present embodiment does not include time information, and the storage form of table 2 can be referred to:
TABLE 2
Table 2 the list has a lower memory footprint than table 1, as compared to table 1, with a reduction of 100 sets in time sequence. And according to the position of each piece of historical data in the list, the starting time and the interval period of the electric meter data, calculating the time information corresponding to the piece of historical data.
In the improved scheme, the data storage pressure of each electric meter body can be fully relieved, so that the storage capacity of the electric meter body does not need to be considered intentionally when the electric meter body is manufactured, and the production cost is reduced. The traditional mode is that data in the ammeter body is uploaded to a power supply enterprise server, but in the uploading process of the data, once the number of the ammeter bodies is increased, the bandwidth of the uploaded data is limited, so that a large amount of data cannot be completely or successfully and completely uploaded to the power supply enterprise server.
In a further aspect, the display device is connected to the cloud power supply enterprise server through the third communication unit, and after a certain amount of historical data has been stored in the storage module of the display device, for example, 80% of the historical data has been stored, a request is issued to the power supply enterprise server to instruct the display device to delete the oldest historical data or upload the oldest historical data to the power supply enterprise server, so as to release the storage capacity of the display device.
And the display device is provided with a communication time threshold, if the display device cannot receive the historical data of the corresponding ammeter body within the communication time threshold, the display device gives an alarm, sends an abnormal report to the power supply enterprise server, and then sends a command of uploading the historical data to the next ammeter body.
The display device further comprises a display unit and an identification unit, wherein the identification unit is mainly used for identifying the user identity information matched with each electric meter body and transmitting the user identity information to the corresponding electric meter body, and the transmission mode can be broadcasting or directional transmission. After the ammeter body receives the user identity information, ammeter data are called out according to the user identity information and transmitted to the display device, and the display unit can display the ammeter data transmitted by the ammeter body. If the user needs to inquire the historical data, the corresponding inquiry key is clicked, the time needing to be inquired is input, the display device retrieves the historical data from the storage module, and the historical data are displayed through the display unit.
The historical data is the electricity consumption data of the electric meter, and the electric meter data called out according to the user identity information is also the electricity consumption data of the electric meter. The user needs to verify the identity information first and then can obtain the electric meter data and the historical data.
There are many ways for the identification unit to identify the user identity information, and 3 simple possible ways are listed below:
as shown in fig. 2, in one structure, the identification unit includes an electric card socket and a card reading module, and the card reading module is configured to read information in an electric card inserted into the electric card socket and transmit the read user identity information to the electric meter body. The structure is actually the structure of a display part in the existing electric meter, and a user can read the number of the electric card by inserting the electric card.
As shown in fig. 3, in another structure, the identification unit includes a scanning head and an identification module, the scanning head is used for scanning a code provided by a user, and the identification module is used for identifying user identity information from the code and transmitting the user identity information to the electricity meter body. The code can be a bar code, a two-dimensional code or other code patterns. In particular, the code may be an electronic code or may be printed on paper. In a new generation of smart electric meter, in order to further facilitate users, the electronic code is preferably adopted to replace the current electric card, and the users only need to display the electronic code through a mobile phone without carrying the electric card, so that the cost of the electric card can be reduced.
As shown in fig. 4, in another structure, the identification unit includes an input module for inputting user identification information and transmitting the user identification information to the electricity meter body. The input module can be a hardware keyboard or a touch keyboard, and keys contained in the keyboard are different based on different expression modes of the user identity information, such as only numeric keys, combination of the numeric keys and English character keys, or combination of the numeric keys, the symbol keys and the English character keys. In this structure, the input module preferably further includes a confirm key and a delete key, so as to facilitate the user to modify the input error and confirm the input error. This approach is not user friendly, but is relatively less costly.
The identification unit can send the user identity information to all the ammeter bodies connected with the identification unit in a broadcasting mode after identifying the user identity information, the ammeter bodies judge whether the user identity information is matched with the ammeter bodies or not after receiving the user identity information, ammeter data are called out if the user identity information is matched with the ammeter bodies, the ammeter data are transmitted to the display device, and the user identity information is ignored if the user identity information is not matched with the ammeter bodies, and no processing is performed.
Because the demand of the user for displaying the electric meter data is random, the display device needs to be in a working or standby state all the time to be capable of starting the identification unit to identify the user identity information, but in practice, the demand of the user is relatively less, and some users even have no such demand, so that even if one display device is connected with a plurality of electric meter bodies, the display task of the display device is relatively less, and most of the time is in the standby state. Therefore, in order to save power consumption of the display device, the display device may further comprise an activation button, as shown in fig. 4, which when activated (e.g. pressed) enters an operational mode.
The electricity meter body is preferably connected to the display device in a wireless manner, but embodiments in which the electricity meter body is connected to the display device in a wired manner are not excluded. For example, the electric meter body and the display device are respectively provided with a data interface, and the electric meter body is connected with the display device through a cable.
In order to reduce the power consumption of the electricity meter body, the first communication module of the electricity meter body can be provided with a standby mode and an operating mode, the standby mode is provided with an operating window T0, the first communication module operates for a T1 time period within a T0 time period, whether a communication request signal of the display device exists or not is periodically checked, and the operating mode is started after the communication request signal of the display device is received; in the T2 time period under the working mode, after the first communication module of the ammeter body does not receive any communication request signal, the communication module enters a standby mode.
Based on the above smart meter system, this embodiment further provides a sharing method of a smart meter system sharing a storage and display device, including the following steps:
step S1: the display device sets preset time, records initial time and records interval period, sends a communication parameter setting connection request to the ammeter body, sends the preset time, the initial time and the interval period to the ammeter body after the connection is successful, the ammeter body starts to time the preset time, and the display device starts to time the preset time.
The preset time is one month, the electric meter body sends the historical data which are stored in sequence at intervals before one month to the display device for storage, and the electric meter body deletes the historical data which are sent to the display device for storage.
The display device stores the historical data in a list form, the list does not contain time information, and the time information corresponding to the historical data can be calculated according to the position, the starting time and the interval time of the historical data in the list.
Step S2: after the preset time is up, the display device sends a wireless communication data uploading connection request to the ammeter bodies, after the connection is successful, a historical data uploading command is sent to each ammeter body in sequence, after the ammeter bodies receive the commands, the historical data before the preset time are sent to the display device to be stored, the ammeter bodies delete the historical data sent to the display device at the same time, and the timing of the preset time of the ammeter bodies is restarted; and the display device sends a command of uploading the historical data to the next ammeter body after the historical data of the previous ammeter body is received.
Step S3: the display device is provided with a communication time threshold, and if the display device cannot receive historical data of the corresponding ammeter body within the communication time threshold, the display device gives an alarm and sends an abnormal report to the power supply enterprise server.
As an example, an operator sets a preset time T, a recording start time T1 and a recording interval period Δ T on a display device, wherein the preset time T refers to the time when the ammeter body records historical electricity consumption data; the recorded starting time T1 is the recorded starting time of all the ammeter bodies is unified, so that the ammeter body A is prevented from recording electricity data at the time a, and the ammeter body B is prevented from recording electricity data at the time a plus delta T; the interval period Δ T indicates how often electricity consumption data is recorded.
Firstly, the display device sends a communication parameter setting connection request to the ammeter body, after the connection is successful, the set preset time T, the starting time T1 and the interval period delta T are sent to the ammeter body, the ammeter body starts to count the preset time, the time counting is counted down in a time decreasing mode, if the counted time is 0, the current historical data record corresponding to the ammeter body is completed, and the display device is waited to send a historical data uploading command. Meanwhile, when the display device starts to preset time, the display device and the ammeter body are ensured to be synchronously timed, and when the display device counts down to 0, the ammeter body also counts the time to 0.
After the preset time is up, namely when the preset time of the display device is 0, the display device sends a wireless communication data uploading connection request to the ammeter bodies, after the connection is successful, commands for uploading historical data are sequentially sent to the ammeter bodies, after the ammeter bodies receive the commands, the historical data recorded during the preset time are sent to the display device to be stored, and meanwhile, the ammeter bodies delete the historical data sent to the display device.
The timing of the preset time of the electric meter body is restarted, and the timing of the preset time of the display device is restarted. And after the historical data of the previous ammeter body is received, the display device sends a command of uploading the historical data to the next ammeter body. And repeating the circulation, and uploading the historical data of all the ammeter bodies to a display device for storage.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A smart meter system sharing a storage and display device comprises at least two meter bodies and a display device, wherein the meter bodies comprise a first communication unit, the display device comprises a second communication unit,
the electric meter comprises an electric meter body and is characterized by further comprising a timing unit, the display device sets preset time, records starting time and record interval period, sends a communication parameter setting connection request to the electric meter body, sends the preset time, the record starting time and the record interval period to the electric meter body after the connection is successful, the electric meter body starts to time the preset time, and the display device starts to time the preset time;
the display device further comprises a storage module, the storage module is communicated with the at least two electric meter bodies and used for storing historical data of the at least two electric meter bodies before preset time, and the historical data sent to the display device is deleted by the at least two electric meter bodies at the same time; the historical data is power consumption data before preset time;
after the preset time is up, the display device sends a wireless communication data uploading connection request to the ammeter bodies, after the connection is successful, a historical data uploading command is sent to each ammeter body in sequence, after the ammeter bodies receive the commands, the historical data before the preset time are sent to the display device to be stored, the ammeter bodies delete the historical data sent to the display device at the same time, and the timing of the preset time of the ammeter bodies is restarted;
and after the historical data of the previous ammeter body is received, the display device sends a command of uploading the historical data to the next ammeter body.
2. The smart meter system of claim 1, wherein the display device further comprises a third communication unit for communicating with a power supply enterprise server.
3. The smart meter system of claim 1, wherein the historical data is stored in the display device in a list, and the list does not include time information, the time information of the historical data is calculated from a position of the historical data stored in the list, and a starting time and an interval period of the display device storing the historical data.
4. The smart meter system of claim 2, wherein the display device further comprises a display unit and an identification unit, the identification unit is configured to identify the user identity information matched with each meter body and transmit the user identity information to the corresponding meter body, and the display unit is configured to display the information transmitted by the meter body and the historical data of the meter body.
5. The smart meter system sharing a storage and display device according to claim 4,
the identification unit comprises an electric card socket and a card reading module, and the card reading module is used for reading information in an electric card inserted into the electric card socket and transmitting the read user identity information to the electric meter body;
or the identification unit comprises a scanning head and an identification module, the scanning head is used for scanning codes provided by users, and the identification module is used for identifying user identity information from the codes and transmitting the user identity information to the electric meter body.
6. A sharing method of a smart meter system for sharing a storage and display device, comprising the steps of:
the method comprises the steps that a display device sets preset time, records starting time and recording interval period, sends a communication parameter setting connection request to an ammeter body, sends the preset time, the recording starting time and the recording interval period to the ammeter body after connection is successful, the ammeter body starts to count the preset time, and the display device starts to count the preset time;
after the preset time is up, the display device sends a wireless communication data uploading connection request to the ammeter bodies, after the connection is successful, a historical data uploading command is sent to each ammeter body in sequence, after the ammeter bodies receive the commands, the historical data before the preset time are sent to the display device to be stored, the ammeter bodies delete the historical data sent to the display device at the same time, and the timing of the preset time of the ammeter bodies is restarted; and after the historical data of the previous ammeter body is received, the display device sends a command of uploading the historical data to the next ammeter body.
7. The method as claimed in claim 6, wherein the predetermined time is one month, the meter body transmits the historical data sequentially stored at intervals one month ago to the display device for storage, and the meter body deletes the historical data transmitted to the display device for storage.
8. The method as claimed in claim 6, wherein the display device periodically sends a synchronous clock command to the meter body so as to ensure the timing accuracy of the meter body.
9. The method for sharing a smart meter system with a shared storage and display device of claim 6, further comprising the steps of: the display device is provided with a communication time threshold, and if the display device cannot receive historical data of the corresponding ammeter body within the communication time threshold, the display device gives an alarm and sends an abnormal report to the power supply enterprise server.
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