WO2017107473A1

WO2017107473A1 - Method for controlling network access of intelligent instrument, master station and data concentration unit

Info

Publication number: WO2017107473A1
Application number: PCT/CN2016/090517
Authority: WO
Inventors: 罗文�; 丁玲玲
Original assignee: 华为技术有限公司
Priority date: 2015-12-26
Filing date: 2016-07-19
Publication date: 2017-06-29
Also published as: CN106920382B; CN106920382A

Abstract

A method for controlling network access of an intelligent instrument. The method comprises: a DCU receiving a network access request message sent by an intelligent instrument; when the address of an intelligent instrument does not exist in an access record, the DCU sending a file establishment request message comprising the instrument number of the intelligent instrument and an identifier of the DCU, and requesting that a master station establishes a file for the intelligent instrument; then, the DCU determining whether the intelligent instrument is allowed to access a network according to a file establishment result in a file establishment response message returned by the master station; and when it is determined that the file establishment result indicates failure, the intelligent instrument is prevented from accessing the network. In this way, a file is automatically established from bottom to top without manually inputting the file in a master station, thereby improving the flexibility and network access efficiency of the network access of the intelligent instrument.

Description

Method for controlling intelligent instrument network access, main station and data centralized unit

Technical field

The present invention relates to the field of communications technologies, and in particular, to a method, a primary station, and a data centralized unit for controlling a smart meter to access a network.

Background technique

Power Line Communication (PLC) technology is a communication method that uses power lines for data transmission. In smart meter systems deployed with Advanced Metering Infrastructure (AMI), PLC technology is commonly used. The main station performs data collection, management and control on the PLC meter through a data concentrating unit (DCU). To this end, the master station must maintain information about the DCU and the PLC meter, ie the file. Usually, the file is manually entered into the main station, and the main station saves the file and then sends it to the DCU. The PLC meter usually uses the automatic discovery mechanism to access the network, that is, access to the DCU according to the network access notification sent by the DCU. In this way, the meter may not have access to the DCU specified by the file, resulting in the meter not being recognized by the primary station.

Summary of the invention

The embodiment of the invention provides a method for controlling the intelligent instrument to enter the network, a main station and a data concentrating unit. According to the network access request of the smart meter, the main station is triggered to automatically create a file, which can solve the manual entry of the file at the main station, and the labor cost is high and artificial. Entering problems that are prone to errors increases the flexibility and network access efficiency of smart meters.

The first aspect provides a method for controlling a smart meter to access a network, where the DCU receives a network access request message sent by the smart meter, including a table number and an address of the smart meter; and the DCU queries the access record according to the address of the smart meter. And determining whether the smart meter is included in the access record;

When the address of the smart meter exists in the access record, indicating that the smart meter has previously entered the network from the DCU, the DCU directly accepts the network access request of the smart meter, allowing the Smart meter access network;

When the address of the smart meter does not exist in the access record, the DCU sends a file request message to the primary station, where the table number of the smart meter and the identifier of the DCU are included, requesting the primary station to be The smart meter establishes a file; then the DCU determines whether to allow the smart meter to enter the network according to the filing response message returned by the primary station, and the file response message returned by the primary station includes the table number and the filing result of the smart meter; When it is determined that the filing result is successful, the DCU adds the address of the smart meter in the access record, allowing the smart meter to enter the network; when determining that the filing result is a failure, the DCU may reject the Smart meters enter the network. In this way, after receiving the network access request of the smart meter, the DCU first requests the primary station to establish a file for the smart meter, and allows the smart meter to enter the network when the main station is successfully filed, thereby not only realizing automatic file creation from the bottom up, It improves the flexibility and network access efficiency of smart meter access, and can ensure the consistency of files. In this way, it is not necessary to manually send the DCU to the DCU in the main station, which can reduce labor costs and avoid the problem of manual entry.

With reference to the first aspect, in a possible implementation, the network access request message further includes additional information of the smart meter; and when the address of the smart meter exists in the access record, the DCU The DCU may further determine that the additional information of the smart meter is updated; when the additional information of the smart meter is updated, the DCU sends an archive update message to the primary station, where the identifier of the DCU is included, where the smart meter The table number, and additional information of the smart meter, to cause the primary station to update the additional information in the file of the smart meter. In this way, the file of the smart meter on the main station can be updated in time to ensure smooth communication between the main station, the DCU and the smart meter.

With reference to the first aspect or the foregoing possible implementation manner, in another possible implementation manner, before querying the access record according to the address of the smart meter, the DCU may first determine the number of smart meters accessing the DCU. Whether it is less than a preset access threshold; if the number of smart meters accessing the DCU is less than the preset accessible threshold, the DCU continues the step of querying the access record according to the address of the smart meter; The DCU may reject the network access request of the smart meter and end the flow of the method. In this way, it is determined whether the DCU is saturated by preset access thresholds, and the DCU can be prevented from accessing too many smart meters and overloading occurs. Case. Load balancing between DCUs can be achieved when multiple DCUs are deployed.

With reference to the first aspect or any one of the foregoing possible implementation manners, in another possible implementation manner, before the DCU receives the access request message sent by the smart meter, the DCU sends a broadcast message, including the The identifier of the DCU to notify the smart meter receiving the broadcast message that the network can be accessed from the DCU. Correspondingly, the network request message further includes an identifier of the DCU.

A second aspect provides a method for controlling a smart meter to access a network, where the primary station receives a filing request message sent by the DCU, where the identifier of the DCU and the table number of the first smart meter are included, and the primary station is according to the first The table number of the smart meter queries the archive to determine whether the first smart meter is included in the archive;

When the table number of the first smart meter does not exist in the archive, the first smart meter may enter the network for the first time, and the primary station establishes in the archive according to the filing request message. An archive of the first smart meter, including a correspondence between a table number of the first smart meter and an identifier of the DCU, and then sending a file response message to the DCU, including a table of the first smart meter And the result of the first filing, the first filing result is successful, indicating that the primary station establishes the file of the first smart meter successfully. In this way, when the first smart meter enters the network for the first time, the primary station establishes a file for the first smart meter according to the file request of the DCU, thereby realizing automatic file creation from the bottom up, and improving the smart instrument accessing the network. The flexibility and efficiency of the network, and the need to manually enter the file at the main station, can reduce labor costs, and can avoid manual error-prone problems.

When the number of the first smart meter exists in the archive, it indicates that the first smart meter is not the first time to enter the network, and includes the following two possible implementation manners:

In a possible implementation, the primary station may reject the file request of the DCU, and send a file response message to the DCU, where the file response response message includes the table number of the first smart meter. And the result of the second filing, the first filing result is a failure, indicating that the primary station fails to establish the file of the first smart meter. In this way, the smart meter can always enter the network from the same DCU, so that the network topology can be frequently changed due to the DCU connected by the smart meter replacement. However, the smart meter may have to send a network access request multiple times in order to access the DCU from the time of the first network access (for example) For example, the other DCUs mentioned above are connected to the network.

In another possible implementation manner, the primary station may update an archive of the first smart meter according to the filing request message, in other words, the primary station causes the file of the first smart meter to include the first Corresponding relationship between the table number of the smart meter and the identifier of the DCU, and then the primary station sends the filing response message to the DCU, including the table number of the first smart meter and the first filing result The first result of the filing is success. In this way, even if the smart meter has entered the network from other DCUs, by updating the file, the new DCU (the DCU) can still be connected to the network, so that the smart meter may have to try multiple times to enter the network, thereby improving the network access efficiency.

Further optionally, the primary station receives an archive update message sent by the DCU, where the file update message includes an identifier of the DCU, a table number of the second smart meter, and additional information of the second smart meter. When the archive of the second smart meter matching the table number of the second smart meter and the identifier of the DCU exists in the archive, the primary station is attached by the second smart meter The information updates the file of the second smart meter. In this way, when the information of the smart meter is updated, the main station can update the file of the smart meter in time to ensure smooth communication between the main station, the DCU and the smart meter.

The third aspect provides a method for controlling a smart meter to access a network, where the DCU receives a network access request message sent by the smart meter, including a table number and an address of the smart meter; and the DCU queries the access record according to the address of the smart meter. Determining whether the smart meter is included in the access record; when the address of the smart meter exists in the access record, indicating that the smart meter has previously entered the network from the DCU, the DCU accepts The network access request of the smart meter directly allows the smart meter to enter the network; when the address of the smart meter does not exist in the access record, the DCU adds the smart meter to the access record. An address, allowing the smart meter to enter the network, and sending a filing request message to the primary station, including a table number of the smart meter and an identifier of the DCU, so that the primary station establishes a location according to the filing request message The file of the smart meter. In this way, after receiving the network access request of the first smart meter, the DCU allows the first smart meter to access the DCU to access the network regardless of whether the first smart meter enters the network for the first time, and triggers the primary station to establish or update the synchronization. The file of the first smart meter. In this way, smart meters can be connected to the network from any DCU, avoiding smart meters to taste Try to enter the network multiple times. The real-time performance of smart meters entering the network is high, which improves the efficiency of network access. In addition, there is no need to manually send the DCU to the DCU in the main station, which can reduce labor costs and avoid the problem of manual entry.

With reference to the first aspect or the foregoing possible implementation manner, in another possible implementation manner, before querying the access record according to the address of the smart meter, the DCU may first determine the number of smart meters accessing the DCU. Whether it is less than a preset access threshold; if the number of smart meters accessing the DCU is less than the preset accessible threshold, the DCU continues the step of querying the access record according to the address of the smart meter; The DCU may reject the network access request of the smart meter and end the flow of the method. In this way, it is determined whether the DCU is saturated by presetting the accessible threshold, and the DCU can be prevented from accessing too many smart meters and an overload occurs. Load balancing between DCUs can be achieved when multiple DCUs are deployed.

With reference to the first aspect or any one of the foregoing possible implementation manners, in another possible implementation manner, before the DCU receives the access request message sent by the smart meter, the DCU sends a broadcast message, including the An identifier of the DCU, the broadcast message is used to notify the smart meter that the network can be accessed from the DCU. Correspondingly, the network request message further includes an identifier of the DCU. In this way, any smart meter that receives the broadcast message can request to access the network from the DCU.

The fourth aspect provides a method for controlling a smart meter to access a network, where the primary station receives a filing request message sent by the DCU, where the identifier of the DCU and the table number of the first smart meter are included; the primary station is according to the first The meter number of the smart meter queries the archive to determine whether the file is included in the archive a smart meter; when the number of the first smart meter does not exist in the archive, the first smart meter may enter the network for the first time, and the main station is in the file according to the filing request message. Establishing a file of the first smart meter in the library, where the correspondence between the table number of the first smart meter and the identifier of the DCU is included; when the table number of the first smart meter exists in the archive And the primary station updates the file of the first smart meter according to the filing request message, in other words, the primary station causes the file of the first smart meter to include the table number of the first smart meter and the The correspondence between the IDs of the DCUs. In this way, whether the first smart meter enters the network for the first time or has entered the network from another DCU, according to the DCU's filing request, the primary station directly establishes or updates the file of the first smart meter, thereby improving the network access efficiency of the smart meter.

Optionally, the primary station sends a file response response message to the DCU after completing the establishing or updating the file of the first smart meter, where the file response response message includes the table number of the first smart meter. So that the DCU knows that the primary station has established or updated the file of the first smart meter, and ensures the consistency of the files on the primary station and the DCU.

In a fifth aspect, a DCU is provided, where the DCU has the function of implementing the foregoing DCU in the method for controlling the smart meter to access the network, and the function may be implemented by hardware or by executing corresponding software by hardware, where the hardware or software includes One or more modules corresponding to the above functions.

According to a sixth aspect, a primary station is provided, where the primary station has a function of implementing a primary station in a method for controlling a smart meter to access the network, and the function may be implemented by using hardware or by executing corresponding software by hardware, where the hardware is implemented. Or the software includes one or more modules corresponding to the functions described above.

According to a seventh aspect, a computer storage medium is provided, wherein a program is stored in the computer storage medium Code, the program code comprising instructions for implementing the method of the first aspect above.

In an eighth aspect, a computer storage medium is provided, the program storage medium storing program code, the program code including instructions for implementing the method of the second aspect.

According to a ninth aspect, there is provided a computer storage medium having program code stored therein, the program code including instructions for implementing the method of the third aspect.

According to a tenth aspect, there is provided a computer storage medium having program code stored therein, the program code including instructions for implementing the method of the fourth aspect.

In an eleventh aspect, a system for controlling a smart meter to access a network, comprising a smart meter, a DCU implementing the method of the first aspect described above, and a primary station implementing the method of the second aspect described above are provided.

The DCU receives the network access request message sent by the smart meter, including the table number and address of the smart meter, and the DCU queries the access record according to the address of the smart meter to determine whether the smart record includes the smart record. When the address of the smart meter exists in the access record, the DCU directly accepts the network access request of the smart meter, allowing the smart meter to enter the network; when the smart record does not exist in the access record At the address of the meter, the DCU sends a filing request message to the primary station, including the table number of the smart meter and the identifier of the DCU.

The primary station queries the archive according to the table number of the first smart meter to determine whether the first smart meter is included in the archive; when the number of the first smart meter does not exist in the archive And the primary station establishes the file of the first smart meter in the archive according to the filing request message, and then sends a file response message including the result of the file creation to the DCU. When the table number of the first smart meter exists in the archive, the primary station may reject the filing request of the DCU, and send a filing response message including the failure of the filing result to the DCU; Or the primary station may update the file of the first smart meter according to the filing request message, and send a file response response message including the result of the establishment of the file to the DCU.

Determining, by the DCU, whether the smart meter is allowed to enter the network according to the result of the filing in the filing response message returned by the primary station. When determining that the filing result is successful, the DCU adds the smart meter to the access record. Address, allowing the smart meter to enter the network; when it is determined that the result of the filing is a failure, the The DCU can reject the smart meter to access the network.

In an eleventh aspect, a system for controlling a smart meter to access a network, comprising a smart meter, a DCU implementing the method of the third aspect, and a primary station implementing the method of the fourth aspect described above are provided.

The DCU receives the network access request message sent by the smart meter, including the table number and address of the smart meter, and the DCU queries the access record according to the address of the smart meter to determine whether the smart record includes the smart record. When the address of the smart meter exists in the access record, the DCU directly accepts the network access request of the smart meter, allowing the smart meter to enter the network; when the smart record does not exist in the access record When the address of the meter is sent, the DCU sends a file request message to the primary station, which includes the table number of the smart meter and the identifier of the DCU, so that the primary station establishes or updates the file of the first smart meter.

The primary station queries the archive according to the table number of the first smart meter to determine whether the first smart meter is included in the archive; when the number of the first smart meter does not exist in the archive And the primary station establishes an archive of the first smart meter in the archive according to the filing request message; when the table number of the first smart meter exists in the archive, the main The station updates the file of the first smart meter according to the filing request message.

DRAWINGS

FIG. 1 is a schematic diagram of a smart meter reading system according to an embodiment of the present application;

2 is a flowchart of a method for controlling a smart meter to access a network according to an embodiment of the present application;

FIG. 3 is a flowchart of another method for controlling a smart meter to access a network according to an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a DCU according to an embodiment of the present disclosure;

FIG. 5 is another schematic structural diagram of a DCU according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of a primary station according to an embodiment of the present application;

FIG. 7 is another schematic structural diagram of a primary station according to an embodiment of the present disclosure;

FIG. 8 is a schematic structural diagram of another DCU according to an embodiment of the present disclosure;

FIG. 9 is another schematic structural diagram of another DCU according to an embodiment of the present disclosure;

FIG. 10 is a schematic structural diagram of another primary station according to an embodiment of the present disclosure;

FIG. 11 is another schematic structural diagram of another primary station according to an embodiment of the present disclosure;

FIG. 12 is a schematic structural diagram of a system for controlling a smart meter to access a network according to an embodiment of the present disclosure;

FIG. 13 is a schematic structural diagram of another system for controlling a smart meter to access a network according to an embodiment of the present disclosure.

detailed description

The technical solution for controlling the intelligent instrument network access provided by the application is used for controlling the smart instrument to enter the network in the intelligent meter reading system based on PLC technology deployed by AMI as shown in FIG. 1 . The system shown in Figure 1 includes a primary station, a DCU, and a smart meter. The smart meter is connected to (accessed) the DCU, and the PLC technology is used to communicate with the DCU, and the DCU and the main station can communicate through a wired or wireless network. The smart meter in this application refers to a meter device such as a smart meter or a smart water meter that supports PLC technology.

The method for controlling the intelligent instrument to enter the network provided by the application is generated by the DCU according to the accessed smart meter information, and is sent to the main station for storage, thereby automatically generating files from the bottom up, which can solve the problem that the manual input file is large and error-prone. And the crosstalk problem generated by the smart instrument randomly entering the network, thereby improving the success rate of the intelligent instrument network access and the networking efficiency of the system.

The technical solutions of the present application are described in detail below with reference to the accompanying drawings and specific embodiments.

Referring to FIG. 2, the present application provides a method for controlling a smart meter to access a network, including:

201. The DCU sends a broadcast message.

The broadcast message is used to notify a smart meter on the power line that the network can be accessed from the DCU. The broadcast message includes an identifier of the DCU.

Specifically, the broadcast message destination address is a broadcast address defined in the PLC technology, for example, 0xAAAAAAAAAAAA.

The first smart meter sends an incoming network request message to the DCU according to the broadcast message; the network access request message includes a table number of the first smart meter and an address of the first smart meter;

The address of the first smart meter is used to uniquely identify the first smart meter in a network communication process, for example, a Media Access Control (MAC) address, and an Internet Protocol (IP). address. The table number of the first smart meter may uniquely identify the first smart meter during management, control, and data collection of the first smart meter, for example, may be a string of numbers, or letters and numbers combination.

The network access request message may further include additional information of the first smart meter, for example, a model number, authentication information, and the like.

203. The DCU receives the network access request message, and queries whether an address of the first smart meter exists in the access record.

The DCU maintains an access record for recording smart meters that access the DCU. The access record includes an address of the smart meter; of course, the table number of the smart meter may also be included. Initially, the access record may be empty. As the smart meter enters the network, the address of each smart meter is added to the access record, for example, the address of the smart meter 1, the address of the smart meter 2, and the like.

The access record may also be set in a whitelist form, so that the access record may be used to control the access of the smart meter while recording the accessed smart meter, that is, allowing the smart meter in the white list to directly Network access.

Specifically, the DCU receives the network access request message sent by the first smart meter, obtains an address of the first smart meter from the network access request message, and queries the location according to the address of the first smart meter. The access record is used to determine whether the address of the first smart meter exists in the access record; if the address of the first smart meter does not exist in the access record, steps 204-210 are performed. If the address of the first smart meter exists in the access record, step 211 is performed.

204. When the first smart meter does not exist in the access record, the DCU sends a file request message to the primary station, where the file request message includes the identifier of the DCU and the first smart The meter number of the meter;

The filing request message may further include an address of the first smart meter; further, The file request message may further include additional information of the first smart meter, and the additional information includes a model number, authentication information, and the like.

205. The primary station receives the filing request message, and queries whether the table number of the first smart meter exists in the archive.

The master station usually maintains an archive for storing the files of each smart meter. Initially, the archive may be empty, and subsequent files of each smart meter may be created according to the filing request message from each DCU, for example, the file of the smart meter 1, the file of the smart meter 2, and the like. The file of the smart meter includes the table number of the smart meter and the identifier of the accessed DCU; of course, it may also include the address of the smart meter, additional information of the smart meter, and the like.

Specifically, the primary station obtains the table number of the first smart meter from the filing request message, and queries the archive according to the table number of the first smart meter to determine whether the archive exists in the archive. a table number of the first smart meter; when the table number of the first smart meter does not exist in the archive, step 206 is performed; when the table number of the first smart meter exists in the archive, Step 207 or 208 is performed.

206. When the table number of the first smart meter does not exist in the archive, the primary station establishes the file of the first smart meter in the archive according to the filing request message, and Sending a file response message to the DCU, where the file response message includes a table number of the first smart meter and a first file result (success);

When the number of the first smart meter does not exist in the archive, the situation is generally that the first smart meter first enters the network, and the primary station automatically searches for the file according to the filing request message. The file of the first smart meter is established in the library, that is, the first correspondence relationship between the table number including the first smart meter and the identifier of the DCU is saved in the archive.

The file of the first smart meter may further include an address of the first smart meter, additional information of the first smart meter, and the like.

After processing the filing request message, the primary station sends a filing response message to the DCU, and responds to the DCU's filing request to notify the DCU to file (establish the first intelligence) The file of the instrument) success or failure.

The first filing result is used to indicate that the primary station establishes the file of the first smart meter successfully.

207. When the table number of the first smart meter exists in the archive, the primary station rejects the file request of the DCU, and sends a file response message to the DCU, where the file response message is sent. The table number of the first smart meter and the second filing result (failure) are included therein;

The second filing result is used to indicate that the primary station fails to establish the file of the first smart meter.

When the number of the first smart meter exists in the archive, it may be that the first smart meter is not the first time to enter the network, and the primary station has maintained the file of the first smart meter, for example, the The first smart meter has previously entered the network from other DCUs, and the primary station maintains the existing correspondence between the table number of the first smart meter and the identifiers of other DCUs. The primary station rejects the filing request of the DCU, so that the DCU rejects the smart meter to access the network. In this way, the smart meter can always enter the network from the same DCU, so that the network topology can be frequently changed due to the DCU connected by the smart meter replacement. However, the smart meter may need to send the network access request multiple times to enter the network from the DCU (for example, the other DCUs mentioned above) that is accessed when the network is first accessed, so the network access efficiency of the smart meter is relatively low.

208. When the table number of the first smart meter exists in the archive, the primary station updates the file of the first smart meter according to the filing request message, and sends a file response to the DCU. a message, the file response message includes a table number of the first smart meter and the first file result (success);

When the number of the first smart meter exists in the archive, it may be that the first smart meter is not the first time to enter the network, and the primary station has maintained the file of the first smart meter, for example, the The first smart meter has previously entered the network from other DCUs, and the primary station maintains the existing correspondence between the table number of the first smart meter and the identifiers of other DCUs. The primary station may update the identifiers of the other DCUs in the existing correspondence in the archive to the identifiers of the DCUs. (Of course, if the address, additional information, etc. of the first smart meter are different, the primary station may also be updated simultaneously. Or the primary station may delete the existing correspondence in the archive, and then save the first correspondence including the table number of the first smart meter and the identifier of the DCU. In this way, even if the smart meter has been connected to the network from other DCUs, By updating the file, this time, the new DCU (the DCU) can still be connected to the network, so that the smart meter may have to try multiple times to enter the network, thereby improving the network access efficiency.

The foregoing steps 207 and 208 are two alternative implementations, and the implementation manner of step 207 or the implementation manner of step 208 may be selected according to network size, or system performance requirements, or customer requirements.

209. The DCU receives the filing response message, and when determining that the result of the filing is the first filing result (success), the DCU adds an address of the smart meter to the access record, allowing the Smart meter access network;

210. The DCU receives the filing response message, and when determining that the filing result is a second filing result (failure), the DCU rejects the smart meter to access the network.

In this embodiment, in order to avoid the file consistency of the first smart meter between the DCU and the primary station, and ensuring network access accuracy, the DCU receives the file response message, and the result of the file is When successful, the first smart meter is allowed to enter the network.

211. When the address of the first smart meter exists in the access record, the DCU allows the first smart meter to enter the network.

Specifically, when the address of the first smart meter exists in the access record, the first smart meter may not be first accessed (the network has been previously accessed from the DCU), and the DCU allows the first smart Instrument access (into the network). Of course, it is also possible that the manual or the primary station has previously configured the address of the first smart meter in the white list.

Further, when the first smart meter exists in the access record, the DCU may further determine whether the additional information of the first smart meter is updated. If the additional information of the first smart meter is updated, the DCU may send an archive update message to the primary station, where the file update message includes an identifier of the DCU and a table number of the first smart meter. An additional information of the first smart meter is further included to cause the primary station to update additional information in an archive of the first smart meter (ie, the first correspondence).

The filing request message, the filing response message, and the file update message in the embodiment of the present application can pass The device language message specification (DLMS) message is implemented. Of course, new messages can be customized. The implementation of the DLMS protocol message in FIG. 1 is taken as an example and is not a limitation on the implementation of the present application.

Optionally, before the access record is queried according to the address of the first smart meter in step 203, the method may further include:

The DCU determines whether the number of smart meters accessing the DCU is less than a preset access threshold.

If it is determined that the number of smart meters accessing the DCU is less than a preset access threshold, the DCU proceeds to step 203;

If it is determined that the number of smart meters accessing the DCU is not less than the preset accessible threshold, the DCU may reject the first smart meter access and end the process.

In this way, it is determined whether the DCU is saturated by presetting the accessible threshold, and the DCU can be prevented from accessing too many smart meters and an overload occurs. In this way, load balancing between DCUs can also be achieved when multiple DCUs are deployed.

The method for controlling the access of the smart meter provided by the embodiment of the present application, after receiving the network access request of the smart meter, the DCU requests the master station to establish a file for the smart meter, and allows the smart meter to enter the network when the master station successfully files the file, and realizes Automatic file creation from the bottom up not only improves the flexibility and network access efficiency of smart meters, but also ensures the consistency of files. In this way, it is not necessary to manually send the DCU to the DCU in the main station, which not only avoids manual entry errors, but also reduces labor costs.

Referring to FIG. 3, the present application provides another method for controlling a smart meter to access a network, including:

301. The DCU sends a broadcast message.

302. The first smart meter sends an incoming network request message to the DCU according to the broadcast message. The network access request message includes a table number of the first smart meter and an address of the first smart meter.

The network access request message may further include a model, an authentication information, and the like of the first smart meter.

303. The DCU receives the network access request message, and determines whether the number of smart meters accessing the DCU is less than a preset access threshold.

If it is determined that the number of smart meters accessing the DCU is less than the preset access threshold, proceed to step 304;

If it is determined that the number of smart meters accessing the DCU is not less than a preset access threshold, the first smart meter access is denied, and the entire process is ended.

It is judged whether the DCU is saturated by the preset access threshold, and the DCU can be prevented from accessing too many smart meters, and an overload situation occurs. In this way, load balancing between DCUs can be achieved when multiple DCUs are deployed.

When the number of the smart meters that are connected to the DCU is less than the preset access threshold, the DCU queries whether the address of the first smart meter exists in the access record.

The DCU maintains an access record for recording smart meters that access the DCU. The access record includes an address of the smart meter; of course, the table number of the smart meter may also be included.

The access record may also be set in a whitelist format for controlling the network access of the smart meter.

Specifically, the DCU obtains an address of the first smart meter from the network access request message, and queries the access record according to an address of the first smart meter to determine whether the access record includes The first smart meter is configured; if the address of the first smart meter does not exist in the access record, steps 305-308 are performed. If the address of the first smart meter exists in the access record, step 309 is performed.

305. When the first smart meter does not exist in the access record, the DCU adds an address of the smart meter to the access record, allows the smart meter to enter the network, and sends the smart meter to the primary station. File request message;

The filing request message includes an identifier of the DCU and a table number of the first smart meter.

306. The primary station receives the filing request message, and queries whether the table number of the first smart meter exists in the archive.

The master station usually maintains an archive for storing the files of each smart meter. The file of the smart meter includes the table number of the smart meter and the identifier of the accessed DCU; of course, it may also include the address of the smart meter, additional information of the smart meter, and the like.

Specifically, the primary station obtains the table number of the first smart meter from the filing request message, and queries the archive according to the table number of the first smart meter to determine whether the file library is An archive containing the first smart meter. When the table number of the first smart meter does not exist in the archive, step 307 is performed; when the table number of the first smart meter exists in the archive, step 308 is performed.

307. When the table number of the first smart meter does not exist in the archive, the primary station establishes an archive of the first smart meter in the archive according to the filing request message.

After completing the establishment of the file of the first smart meter, the primary station may send a file response message to the DCU, where the file response response message includes a table number of the first smart meter in response to the DCU filing request.

308. When the table number of the first smart meter exists in the archive, the primary station updates the file of the first smart meter according to the filing request message.

When the number of the first smart meter exists in the archive, the first smart meter may be The table is not the first time to enter the network, the primary station has maintained the file of the first smart meter, for example, the first smart meter has previously entered the network from other DCUs, and the primary station maintains the table of the first smart meter The existing relationship between the number and the ID of other DCUs. The primary station may update the identifiers of the other DCUs in the existing correspondence in the archive to the identifiers of the DCUs. (Of course, if the address, additional information, etc. of the first smart meter are different, the primary station may also be updated simultaneously. Or the primary station may delete the existing correspondence in the archive, and then save the first correspondence including the table number of the first smart meter and the identifier of the DCU.

After completing the file update of the first smart meter, the primary station may send a file response message to the DCU, where the file response response message includes a table number of the first smart meter in response to the DCU filing request.

Optionally, in order to ensure that the primary station receives the foregoing filing request message, establishing or updating an archive of the first smart meter, the DCU may initiate a timing after sending the filing request message to the primary station. And setting a response threshold, if the filing response message returned by the primary station is not received within the response threshold time, the DCU may send the filing request message to the primary station again until receiving The filing response message returned to the primary station. In this way, the consistency of the files on the primary station and the DCU can be ensured to ensure smooth communication between the subsequent primary station, the DCU and the smart meter.

309. When the address of the first smart meter exists in the access record, the DCU allows the first smart meter to enter the network.

Specifically, when the first smart meter is included in the access, the first smart meter may have previously entered the network from the DCU, and the DCU allows the first smart meter to access (incoming network). Of course, it is also possible that the manual or the primary station has previously configured the address of the first smart meter in the access record.

Further, when the address of the first smart meter exists in the access record, the DCU may further determine whether the additional information of the first smart meter, such as a model, an authentication information, or the like, is updated. If the additional information of the first smart meter is updated, the DCU may send an archive update message to the primary station, where the file update message includes an identifier of the DCU and the first smart The meter number of the meter further includes additional information of the first smart meter to cause the primary station to update the additional information in the file of the first smart meter (ie, the first correspondence).

In the embodiment of the present application, the filing request message, the filing response message, and the file update message may be implemented by using a DLMS message, and of course, a new message may be customized.

In the embodiment of the present application, the DCU receives the network access request of the first smart meter, and can immediately add the address of the first smart meter to the access record, permitting the first smart meter to enter the network, and then Triggering the primary station to establish or update the file of the first smart meter. In this way, the smart meter can enter the network from any DCU, avoiding the situation that the smart meter may have to try multiple times to enter the network, and the real-time access to the network is high, thereby improving the network access efficiency.

Referring to FIG. 4, a DCU 400 is provided for implementing the function of the DCU in the method for controlling the smart meter accessing as shown in FIG. 2, and the DCU 400 includes: a sending module 401, a receiving module 402, and processing. Module 403;

The receiving module 402 is configured to receive a network access request message sent by the first smart meter, where the network access request message includes a table number of the first smart meter and an address of the first smart meter;

The processing module 403 is configured to query, according to an address of the first smart meter, whether an address of the first smart meter exists in an access record; when an address of the first smart meter exists in the access record And allowing the first smart meter to enter the network; when the address of the first smart meter does not exist in the access record, sending a filing request message to the primary station, where the filing request message includes the first The meter number of the smart meter and the identifier of the DCU;

The sending module 401 is configured to send the filing request message;

The filing request message may further include an address of the first smart meter; further optionally, the filing request message further includes additional information of the first smart meter.

The processing module 403 is specifically configured to obtain an address of the first smart meter from the network access request message, and query the access record according to an address of the first smart meter to determine the access record. Whether to include the address of the first smart meter.

Before the receiving module 402 receives the network access request message sent by the first smart meter, the sending module 401 is further configured to send a broadcast message, where the broadcast message includes an identifier of the DCU 400; the broadcast message is used to notify the power line The smart meter on it can be connected to the network from the DCU 400.

The DCU 400 may further include a storage module, configured to store the access record, where the access record is used to record a smart meter that accesses the DCU. The access record may be set in the form of a white list for controlling the smart meter to access the network. The address of the smart meter may be included in the access record; of course, the table number of the smart meter may also be included.

The receiving module 402 is further configured to receive a filing response message returned by the primary station, where the filing response message includes a table number and a filing result of the first smart meter;

The result of the setting includes: a first filing result (success) for indicating that the primary station establishes the file of the first smart meter is successful; and a second filing result (failure) for indicating the establishment of the primary station The file of the first smart meter failed.

The processing module 403 is further configured to: when the result of the filing is successful, add an address of the first smart meter to the access record, allowing the first smart meter to enter the network; When the result is a failure, the first smart meter is denied access to the network.

The main station usually maintains an archive for storing the files of the various smart meters. The file of the smart meter includes the table number of the smart meter and the identifier of the connected DCU; of course, the address of the smart meter can also be included, the smart meter Additional information, etc. The file of the first smart meter includes a first correspondence between the table number of the first smart meter and the identifier of the DCU, and may further include an address, additional information, and the like of the first smart meter.

In this way, the DCU allows the first smart meter to enter the network when receiving the filing response message returned by the primary station, and the result of the file creation is successful, and the first between the DCU and the primary station can be avoided. The file of a smart meter is inconsistent, ensuring the accuracy of network access.

Optionally, the network access request message may further include additional information of the first smart meter, for example, a model number, authentication information, and the like. When the first smart meter is included in the access record, the processing module 403 is further configured to:

Determining whether the additional information of the first smart meter is updated; if the additional information of the first smart meter is updated, sending an archive update message to the primary station, where the file update message includes the identifier of the DCU 400 And a table number of the first smart meter and additional information of the first smart meter, so that the primary station updates the additional information in the file of the first smart meter. In this way, the file consistency of the first smart meter between the DCU and the primary station can be guaranteed.

The sending module 401 is further configured to send the file update message.

In the embodiment of the present application, the filing request message, the filing response message, and the file update message may be implemented by extending the DLMS protocol message. Of course, the new message may be customized.

Optionally, the DCU 400 further includes a threshold determining module, configured to determine whether the number of smart meters accessing the DCU 400 is less than a preset access threshold; and determining that the number of smart meters accessing the DCU is less than a preset If the threshold value is reached, the processing module 403 continues to query the access record according to the address of the first smart meter; if it is determined that the number of smart meters accessing the DCU is not less than a preset access threshold, the method rejects The first smart meter accesses and ends the entire operation.

The DCU 400 can be prevented from being connected to the smart meter and the overload occurs due to the preset accessibility threshold. In this way, load balancing between DCUs can be achieved when multiple DCUs are deployed.

Referring to FIG. 5, a DCU 500 is provided for implementing the function of the DCU in the method for controlling the smart meter accessing as shown in FIG. 2, the DCU 500 includes: a processor 501, a memory 502, and a communication interface. 503;

The processor 501, the memory 502 and the communication interface 503 can be connected to each other through a bus 504; the bus 504 can be a peripheral component interconnect (PCI) bus or an extended industry standard structure ( Extended industry standard architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 5, but it does not mean that there is only one bus or one type of bus.

The memory 502 is configured to store an access record maintained by the processor 501 for the DCU 500, where the access record is used to record a smart meter that accesses the DCU 500. The access record may be set in the form of a white list for controlling the smart meter to access the network. The address of the smart meter may be included in the access record; of course, the table number of the smart meter may also be included.

The memory 502 may include a volatile memory (English: volatile memory), such as a random access memory (English: random-access memory, abbreviation: RAM); the memory 502 may also include a non-volatile memory (English: non- Volatile memory), such as flash memory (English: flash memory), hard disk (English: hard disk drive, abbreviated: HDD) or solid state drive (English: solid-state drive, abbreviation: SSD); memory 502 can also include the above categories a combination of memory.

The processor 501 is configured to send a broadcast message, where the broadcast message includes an identifier of the DCU 500, and receive a network access request message sent by the first smart meter, where the network access request message includes an address of the first smart meter and Determining an access record of the first smart meter according to the address of the first smart meter, and determining whether an address of the first smart meter exists in the access record;

The processor 501 is further configured to allow the first smart meter to enter the network when the address of the first smart meter exists in the access record;

The processor 501 is further configured to: when determining that the address of the first smart meter does not exist in the access record, send a filing request message to the primary station, where the filing request message includes the first a table number of the smart meter and an identifier of the DCU; receiving a file response message returned by the primary station, where the file response response message includes a table number and a file creation result of the first smart meter; When the result of the file is successful, the address of the first smart meter is added to the access record, and the first smart meter is allowed to enter the network; when the result of the file creation is a failure, the first smart meter is denied access to the network. .

The processor 501 specifically sends the broadcast message through the communication interface 503, and passes the The communication interface 503 receives the incoming request message.

In the embodiment of the present application, the communication interface 503 represents an interface for the DCU to communicate with other devices in the network, for example, a primary station, a smart meter, etc., and may be one or more. For convenience of description, the communication is used in the present application. The interface 503 is not limited to the technical solution of the present application.

The communication interface 503 includes a power line interface in communication with the smart meter; a wired communication access port in communication with the primary station, a wireless communication interface, or a combination thereof; wherein the wired communication interface can be, for example, an Ethernet interface. The Ethernet interface can be an optical interface, an electrical interface, or a combination thereof. The wireless communication interface can be a WLAN interface, a cellular network communication interface, or a combination thereof.

The processor 501 is configured to obtain an address of the first smart meter from the network access request message, and query the access record according to an address of the first smart meter to determine the access record. Whether to include the address of the first smart meter.

Optionally, the network access request message further includes additional information of the first smart meter, for example, a model number, authentication information, and the like. When the first smart meter is included in the access record, the processor 501 is further configured to: determine whether the additional information of the first smart meter is updated; and determine additional information of the first smart meter And updating, sending an archive update message to the primary station, where the file update message includes an identifier of the DCU 500, a table number of the first smart meter, and additional information of the first smart meter, so that The primary station updates additional information in an archive of the first smart meter (ie, the first correspondence). This can ensure that the first between the DCU and the primary station The file consistency of a smart meter.

Optionally, the processor 501 is further configured to determine whether the number of smart meters that access the DCU is less than a preset access threshold; if the number of smart meters that access the DCU is determined to be less than a preset access threshold And continuing the operation of querying the access record according to the address of the first smart meter; and if the number of smart meters accessing the DCU is not less than a preset access threshold, rejecting the first smart meter access And end the whole operation.

The preset accessibility threshold is used to determine whether the DCU is saturated, and the DCU can be prevented from accessing too many smart meters and overloaded. In this way, load balancing between DCUs can be achieved when multiple DCUs are deployed.

The processor 501 may be a central processing unit (English: central processing unit, abbreviated: CPU), a network processor (English: network processor, abbreviated: NP) or a combination of a CPU and an NP. The processor 501 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (abbreviated as PLD), or a combination thereof. The above PLD can be a complex programmable logic device (English: complex programmable logic device, abbreviation: CPLD), field-programmable gate array (English: field-programmable gate array, abbreviation: FPGA), general array logic (English: generic array Logic, abbreviation: GAL) or any combination thereof.

Optionally, the memory 502 is further configured to store program instructions; the processor 501 may invoke program instructions stored in the memory 502 to perform one or more steps of the DCU in the embodiment shown in FIG. 2, or In the implementation manner, the method for controlling the smart meter to enter the network shown in FIG. 2 is implemented.

The first type of DCU provided by the embodiment of the present application, after receiving the network access request of the smart meter, requests the primary station to establish a file for the smart meter, and allows the smart meter to enter the network when the main station is successfully filed, thereby achieving the bottom-up Automatic file creation not only improves the flexibility and network access efficiency of smart meters, but also ensures the consistency of files between the DCU and the main station. In addition, the problem of high labor cost and error-prone caused by manually entering the file at the main station is also avoided.

Referring to FIG. 6, a primary station 600 is provided for implementing the function of a primary station in a method for controlling a smart meter to enter the network as shown in FIG. 2. The primary station 600 includes: a receiving module 601, and a sending module. 602 and processing module 603;

The receiving module 601 is configured to receive a filing request message sent by the DCU, where the filing request message includes an identifier of the DCU and a table number of the first smart meter;

The processing module 603 is configured to query, according to the table number of the first smart meter, whether the table number of the first smart meter exists in the archive; when the table of the first smart meter does not exist in the archive And establishing, according to the filing request message, an archive of the first smart meter in the archive, the file of the first smart meter including a table number of the first smart meter and the DCU Corresponding relationship, and sending a first filing response message to the DCU, where the first filing response message includes a table number of the first smart meter and a first filing result (success);

The processing module 603 is specifically configured to obtain the table number of the first smart meter from the filing request message, query the archive according to the table number of the first smart meter, to determine whether the file library is There is a table number of the first smart meter.

When the number of the first smart meter exists in the archive, the processing module 603 is further configured to:

Rejecting the file request of the DCU, and sending a second file response message to the DCU, where the second file response message includes the table number of the first smart meter and the second file result (failure) In this way, it can ensure that a smart meter always enters the network from the same DCU, avoiding frequent changes of the network topology due to the DCU connected by the smart meter replacement, thereby improving network management efficiency. or,

Updating the file of the first smart meter according to the filing request message, and sending the first file response message to the DCU; thus, the smart meter can quickly enter the network, has high real-time performance, and improves network access efficiency.

The sending module 602 is further configured to send the first filing response message or the second filing response message.

The first result of the setting is used to indicate that the primary station establishes the file of the first smart meter successfully; and the second file is used to indicate that the primary station fails to establish the file of the first smart meter.

The primary station 600 may further include a storage module for storing the archive; the archive is used to store files of each smart meter, and the file of the smart meter includes the table number of the smart meter and the accessed DCU. Identification; of course, it can also include the address of the smart meter, additional information of the smart meter, and the like.

The file of the first smart meter includes a first correspondence between the table number of the first smart meter and the identifier of the DCU, and may further include an address, additional information, and the like of the first smart meter.

The receiving module 601 is further configured to receive an archive update message sent by the DCU, where the file update message includes an identifier of the DCU, a table number of the second smart meter, and additional information of the second smart meter. ;

The processing module is further configured to: when the file of the second smart meter matching the table number of the second smart meter and the identifier of the DCU exists in the archive, use the second smart The additional information of the meter updates the file of the second smart meter. Specifically, when there is a file in the archive, the file includes a second correspondence between the table number of the second smart meter and the identifier of the DCU, that is, the file library is considered to exist and The file of the second smart meter whose table number of the second smart meter matches the identifier of the DCU updates the additional information in the file with the additional information of the second smart meter.

Referring to FIG. 7, the present application provides a primary station for implementing the function of a primary station in a method for controlling a smart meter to enter the network as shown in FIG. 2, the primary station includes: a processor 701, a memory 702, and a communication interface 703;

The processor 701, the memory 702 and the communication interface 703 may be connected to each other through a bus 704; the bus 704 may be a PCI bus or an EISA bus. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 7, but it does not mean that there is only one bus or one type of bus.

The memory 702 is configured to store an archive maintained by the processor for the primary station; The file library is used to store the files of the smart meters. The file of the smart meter includes the table number of the smart meter and the identifier of the accessed DCU; of course, the address of the smart meter and the additional information of the smart meter may also be included.

The memory 702 can include volatile memory, such as RAM; the memory 702 can also include non-volatile memory, such as flash memory, HDD or SSD; the memory 702 can also include a combination of the types of memory described above.

The processor 701 is configured to receive a file request message sent by the DCU, where the file request message includes an identifier of the DCU and a table number of the first smart meter, and is queried according to the table number of the first smart meter. Whether the table number of the first smart meter exists in the archive; when the table number of the first smart meter does not exist in the archive, establishing the location in the archive according to the filing request message The file of the first smart meter is sent, and the first file response message is sent to the DCU, where the first file response message includes the table number of the first smart meter and the first file result (success).

The processor 701 is configured to obtain a table number of the first smart meter from the filing request message, query an archive according to a table number of the first smart meter, to determine whether the file library is There is a table number of the first smart meter.

When the table number of the first smart meter exists in the archive, the processor 701 is further configured to:

The filing request message may further include an address of the first smart meter; and optionally, may further include additional information of the first smart meter, such as a model number, authentication information, and the like.

The processor 701 is further configured to receive an archive update message sent by the DCU, where the file update message includes an identifier of the DCU, a table number of the second smart meter, and additional information of the second smart meter. When the archive of the second smart meter matching the table number of the second smart meter and the identifier of the DCU exists in the archive, updating the information with the additional information of the second smart meter The file of the second smart meter.

Specifically, when there is a file in the archive, the file includes a second correspondence between the table number of the second smart meter and the identifier of the DCU, that is, the file library is considered to exist and The file of the second smart meter whose table number of the second smart meter matches the identifier of the DCU updates the additional information in the file with the additional information of the second smart meter.

The processor 701 receives the filing request message and the file update message through the communication interface 703, and sends the first filing response message or the second filing response message through the communication interface 703.

In the embodiment of the present application, the communication interface 703 represents an interface between the primary station and other devices in the network, for example, DCU(s), and may be one or more. For convenience of description, the communication interface is used in this application. 703 indicates that it is not intended to limit the technical solution of the present application.

The communication interface 703 can be a wired communication access port, a wireless communication interface, or a combination thereof, wherein the wired communication interface can be, for example, an Ethernet interface. The Ethernet interface can be an optical interface, an electrical interface, or a combination thereof. The wireless communication interface can be a WLAN interface, a cellular network communication interface, or a combination thereof.

The processor 701 can be a CPU, an NP, or a combination of a CPU and an NP. The processor 701 may further include a hardware chip. The above hardware chip may be an ASIC, a PLD, or a combination thereof. The above PLD may be a CPLD, an FPGA, a GAL, or any combination thereof.

Optionally, the memory 702 is further configured to store program instructions; the processor 701 can be invoked. The program instructions stored in the memory 702 perform one or more steps of the primary station in the embodiment shown in FIG. 2, or an optional implementation thereof, to implement the method for controlling the smart meter to access the network shown in FIG. 2.

The primary station provided by the embodiment of the present application determines whether to establish a file for the smart meter according to the filing request message sent by the DCU, and feeds back the successful or failed file creation to the DCU to control whether the smart meter can access the network from the DCU. In this way, the file can be automatically created from the bottom up, and the consistency of the file is ensured, and the flexibility of the smart meter to access the network and the efficiency of accessing the network are improved. In addition, since there is no need to manually enter files in the main station, labor costs can be reduced, and manual error-prone problems can be avoided.

Referring to FIG. 8 , another DCU 800 provided by the embodiment of the present application is used to implement the function of the DCU in the method for controlling the smart meter to enter the network as shown in FIG. 3 . The DCU 800 includes: a sending module 801, a receiving module 802, and Processing module 803;

The receiving module 802 is configured to receive a network access request message sent by the first smart meter, where the network access request message includes a table number of the first smart meter and an address of the first smart meter;

The processing module 803 is configured to query an access record according to an address of the first smart meter; when the address of the first smart meter exists in the access record, allowing the first smart meter to enter the network; When the address of the first smart meter does not exist in the access record, the address of the first smart meter is added to the access record, and the first smart meter is allowed to enter the network, and is sent to the primary station. a file request message, where the file request message includes a table number of the first smart meter and an identifier of the DCU;

The sending module 801 is configured to send the filing request message.

Before the receiving module 802 receives the network access request message sent by the first smart meter, the sending module 801 is further configured to send a broadcast message, where the broadcast message includes an identifier of the DCU 800; the broadcast message is used to notify the power line The smart meter on it can be connected to the network from the DCU 800.

The DCU 800 may further include a storage module, configured to store the access record, where the access record is used to record a smart meter that accesses the DCU. The access record may be set in the form of a white list for controlling the smart meter to access the network. The access record may include an address of the smart meter; It can also include the meter number of the smart meter.

The receiving module 802 is further configured to receive a filing response message returned by the primary station, where the filing response message includes a table number of the first smart meter.

The main station usually maintains an archive for storing the files of the various smart meters. The file of the smart meter includes the table number of the smart meter and the identifier of the connected DCU; of course, the address of the smart meter can also be included, the smart meter Additional information, etc. The file of the first smart meter includes a first correspondence between the table number of the first smart meter and the identifier of the DCU, and may further include an address, additional information, and the like of the first smart meter. The DCU may determine that the file of the first smart meter has been established by the primary station according to the filing response message returned by the primary station.

Optionally, the DCU 800 further includes a retransmission module, configured to send the filing request message to the primary station again when the filing response message returned by the primary station is not received within a response time threshold Until the receipt of the filing response message returned by the primary station. In this way, the primary station can ensure that the above-mentioned filing request message is received, and the file of the first smart meter is created or updated according to the request, so as to ensure the consistency of the files on the primary station and the DCU, so as to ensure the subsequent main The communication between the station, the DCU and the smart meter is smooth.

The retransmission module may determine, by means of a timer, whether the response threshold is reached.

Optionally, the network access request message may further include additional information of the first smart meter, for example, a model number, authentication information, and the like. When the first smart meter is included in the access record, the processing module 803 is further configured to:

Determining whether the additional information of the smart meter is updated; if the additional information of the first smart meter is updated, sending an archive update message to the primary station, where the file update message includes the identifier of the DCU 800, And a table number of the first smart meter, and additional information of the first smart meter, so that the primary station updates the additional information in the file of the first smart meter. In this way, the file consistency of the first smart meter between the DCU and the primary station can be guaranteed.

The sending module 801 is further configured to send the file update message.

Optionally, the DCU 800 further includes a threshold determination module, configured to determine access to the DCU. Whether the number of the smart meters is less than the preset access threshold; if it is determined that the number of the smart meters accessing the DCU is less than the preset access threshold, the processing module 803 continues to query the access according to the address of the first smart meter. Recording operation; if it is determined that the number of smart meters accessing the DCU is not less than a preset access threshold, the first smart meter access is rejected, and the entire operation is ended.

It is determined whether the DCU 800 is saturated by the preset accessibility threshold, and the DCU 800 can be prevented from accessing too many smart meters and an overload condition occurs. In this way, load balancing between DCUs can be achieved when multiple DCUs are deployed.

Referring to FIG. 9, another DCU 900 provided by the embodiment of the present application is used to implement the function of the DCU in the method for controlling the smart meter accessing as shown in FIG. 3. The DCU 900 includes: a processor 901, a memory 902, and a communication. Interface 903;

The processor 901, the memory 902 and the communication interface 903 may be connected to each other through a bus 904; the bus 904 may be a PCI bus or an EISA bus or the like. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 9, but it does not mean that there is only one bus or one type of bus.

The memory 902 is configured to store an access record maintained by the processor 901 for the DCU 900, where the access record is used to record a smart meter that accesses the DCU 900. The access record may be set in the form of a white list for controlling the smart meter to access the network. The address of the smart meter may be included in the access record; of course, the table number of the smart meter may also be included.

The memory 902 can include volatile memory, such as RAM; the memory 902 can also include non-volatile memory, such as flash memory, HDD or SSD; the memory 902 can also include a combination of the types of memory described above.

The processor is configured to send a broadcast message, where the broadcast message includes an identifier of the DCU 900, and receive a network access request message sent by the first smart meter, where the network access request message includes a table number of the first smart meter and An address of the first smart meter; querying the access record according to an address of the first smart meter; and allowing the first smart meter when an address of the first smart meter exists in the access record Entering the network; when the address of the first smart meter does not exist in the access record, Adding an address of the first smart meter to the access record, allowing the first smart meter to enter the network, and sending a file request message to the primary station, where the file request message includes the first smart meter The table number and the identification of the DCU 900.

The processor 901 specifically sends the broadcast message through the communication interface 903, and receives the network access request message through the communication interface 903.

In the embodiment of the present application, the communication interface 903 represents one or more interfaces of the DCU and other devices in the network, for example, a primary station, a smart meter, etc., and is used for communication in the present application. The interface 903 is not limited to the technical solution of the present application.

The communication interface 903 includes a power line interface in communication with the smart meter; a wired communication access port in communication with the primary station, a wireless communication interface, or a combination thereof; wherein the wired communication interface can be, for example, an Ethernet interface. The Ethernet interface can be an optical interface, an electrical interface, or a combination thereof. The wireless communication interface can be a WLAN interface, a cellular network communication interface, or a combination thereof.

Optionally, the network access request message further includes additional information of the first smart meter, for example, a model number, authentication information, and the like. When the address of the smart meter exists in the access record, the processor 901 is further configured to determine whether the additional information of the first smart meter is updated; determining additional information of the first smart meter And updating, sending an archive update message to the primary station, where the file update message includes an identifier of the DCU 900, a table number of the first smart meter, and additional information of the first smart meter, so that The primary station updates additional information in an archive of the first smart meter (ie, the first correspondence). In this way, the file consistency of the first smart meter between the DCU and the primary station can be guaranteed.

The DCU can be avoided by determining whether the DCU is saturated by a preset access threshold. Access too many smart meters, overload. In this way, load balancing between DCUs can be achieved when multiple DCUs are deployed.

Optionally, the processor 901 is further configured to: determine whether the filing response message returned by the primary station is received in response to the threshold time; and not receiving the return of the primary station within the response threshold time When the file responds to the message, the filing request message is sent again to the primary station until the filing response message returned by the primary station is received. In this way, the primary station can ensure that the above-mentioned filing request message is received, and the file of the first smart meter is created or updated according to the request, so as to ensure the consistency of the files on the primary station and the DCU, so as to ensure the subsequent main The communication between the station, the DCU and the smart meter is smooth.

The processor 901 can initiate a timer to determine whether the response threshold is reached.

The processor 901 can be a CPU, an NP, or a combination of a CPU and an NP. The processor 901 may further include a hardware chip. The above hardware chip may be an ASIC, a PLD, or a combination thereof. The above PLD may be a CPLD, an FPGA, a GAL, or any combination thereof.

Optionally, the memory 902 is further configured to store program instructions; the processor 901 may invoke program instructions stored in the memory 902 to perform one or more steps of the DCU in the embodiment shown in FIG. 3, or In the implementation manner, the method for controlling the smart meter to enter the network shown in FIG. 3 is implemented.

Referring to FIG. 10, another primary station 1000 provided by the embodiment of the present application is configured to implement the function of a primary station in a method for controlling a smart meter to enter the network as shown in FIG. 3. The primary station 1000 includes: a receiving module 1001 and processing. Module 1002;

The receiving module 1001 is configured to receive a filing request message sent by the DCU, where the filing request message includes an identifier of the DCU and a table number of the first smart meter;

The processing module 1002 is configured to query, according to the table number of the first smart meter, whether the table number of the first smart meter exists in the archive; when the table of the first smart meter does not exist in the archive And establishing, according to the filing request message, an archive of the first smart meter in the archive, the file of the first smart meter including a table number of the first smart meter and the DCU Corresponding relationship of the identifier; when the table number of the first smart meter exists in the archive, according to the file The message is updated to update the file of the first smart meter.

Optionally, the primary station 1000 further includes a storage module 1003, configured to store the archive; the archive is used to store files of each smart meter, and the file of the smart meter includes the table number and the location of the smart meter. The ID of the access to the DCU; of course, it may also include the address of the smart meter, additional information of the smart meter, and the like.

Optionally, the primary station 1000 further includes a sending module 1004, configured to send a filing response message to the DCU, where the filing response message includes a table number of the first smart meter.

Optionally, the receiving module 1001 is further configured to receive an archive update message sent by the DCU, where the file update message includes an identifier of the DCU, a table number of the second smart meter, and the second smart Additional information of the meter;

The processing module 1002 is further configured to: when the file of the second smart meter matching the table number of the second smart meter and the identifier of the DCU exists in the archive, use the second The additional information of the smart meter updates the file of the second smart meter. Specifically, when there is a file in the archive, the file includes a second correspondence between the table number of the second smart meter and the identifier of the DCU, that is, the file library is considered to exist and The file of the second smart meter whose table number of the second smart meter matches the identifier of the DCU updates the additional information in the file with the additional information of the second smart meter.

Referring to FIG. 11, another primary station 1100 is provided to implement the function of a primary station in a method for controlling a smart meter to enter the network as shown in FIG. 3. The primary station 1100 includes:

a processor 1101, a memory 1102 and a communication interface 1103;

The processor 1101, the memory 1102 and the communication interface 1103 may be connected to each other through a bus 1104; the bus 1104 may be a PCI bus or an EISA bus or the like. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 11, but it does not mean that there is only one bus or one type of bus.

The memory 1102 is configured to store an archive maintained by the processor for the primary station; the archive is used to store files of each smart meter, and the file of the smart meter includes a table number and a connection of the smart meter The ID of the DCU; of course, it can also include the address of the smart meter, additional information of the smart meter, and so on.

The memory 1102 can include volatile memory, such as RAM; the memory 1102 can also include non-volatile memory, such as flash memory, HDD or SSD; the memory 1102 can also include a combination of the types of memory described above.

The processor 1101 is configured to receive a file request message sent by the DCU, where the file request message includes an identifier of the DCU and a table number of the first smart meter, and is queried according to the table number of the first smart meter. Whether the table number of the first smart meter exists in the archive; when the table number of the first smart meter does not exist in the archive, establishing the location in the archive according to the filing request message Archives of the first smart meter, the file of the first smart meter includes a correspondence between a table number of the first smart meter and an identifier of the DCU; when the first smart meter exists in the archive At the time of the table number, the file of the first smart meter is updated according to the filing request message.

Optionally, the processor 1101 is further configured to send a filing response message to the DCU, where the filing response message includes a table number of the first smart meter.

Optionally, the processor 1101 is further configured to receive an archive update message sent by the DCU, where the file update message includes an identifier of the DCU, a table number of the second smart meter, and the second smart Additional information of the meter; when there is an archive of the second smart meter matching the table number of the second smart meter and the identifier of the DCU in the archive, the additional use of the second smart meter The information updates the file of the second smart meter.

Specifically, when there is a file in the archive, the file includes a second correspondence between the table number of the second smart meter and the identifier of the DCU, that is, the file library is considered to exist and The file of the second smart meter whose table number of the smart meter matches the identifier of the DCU, Then, the additional information in the file is updated with the additional information of the second smart meter.

The processor 1101 receives the filing request message and the file update message through the communication interface 1103, and sends the filing response message through the communication interface 1103.

In the embodiment of the present application, the communication interface 1103 represents an interface between the primary station and other devices in the network, for example, DCU(s), and may be one or more. For convenience of description, the communication interface is used in the present application. 1103 indicates that it is not intended to limit the technical solution of the present application.

The communication interface 1103 can be a wired communication access port, a wireless communication interface, or a combination thereof; wherein the wired communication interface can be, for example, an Ethernet interface. The Ethernet interface can be an optical interface, an electrical interface, or a combination thereof. The wireless communication interface can be a WLAN interface, a cellular network communication interface, or a combination thereof.

The processor 1101 may be a CPU, an NP, or a combination of a CPU and an NP. The processor 1101 may further include a hardware chip. The above hardware chip may be an ASIC, a PLD, or a combination thereof. The above PLD may be a CPLD, an FPGA, a GAL, or any combination thereof.

Optionally, the memory 1102 is further configured to store program instructions; the processor 1101 may invoke program instructions stored in the memory 1102 to perform one or more steps of the primary station in the embodiment shown in FIG. 3, or In the selected implementation manner, the method for controlling the smart meter to enter the network shown in FIG. 3 is implemented.

The primary station provided by the embodiment of the present application establishes a file for each smart meter according to the filing request message sent by the DCU. It realizes the automatic creation of files from the bottom up, which improves the flexibility and network access efficiency of smart meters. In addition, since there is no need to manually enter files in the main station, labor costs can be reduced, and manual error-prone problems can be avoided.

The embodiment of the present application further provides a system 1200 for controlling smart meter access, including a primary station 1201, a DCU 1202, and a smart meter 1203. The smart meter 1203 and the DCU 1202 are connected by a power line, and adopt PLC technology. Communication.

The main station 1201 is used to implement the function of the main station in the method for controlling the smart meter to enter the network shown in FIG. 2 . For the structure and function, refer to the embodiment shown in FIG. 6 or FIG. 7 , and details are not described herein again.

The DCU 1202 is configured to implement the function of the DCU in the method for controlling the smart meter to enter the network shown in FIG. For the structure and function, refer to the embodiment shown in FIG. 4 or 5, and details are not described herein again.

The system 1200 can include a plurality of DCUs and a plurality of smart meters. When there are a large number of smart meters and DCUs in the system, the technical solution provided by the present application can significantly save labor costs and improve the efficiency of smart meter access.

The embodiment of the present application further provides another system 1300 for controlling smart meter access, including a primary station 1301, a DCU 1302, and a smart meter 1303. The smart meter 1303 and the DCU 1302 are connected by a power line, and the PLC is used. Technical communication.

The main station 1301 is configured to implement the function of the primary station in the method for controlling the smart meter to enter the network shown in FIG. 3. For the structure and function, refer to the embodiment shown in FIG. 10 or 11, and details are not described herein again.

The DCU 1302 is used to implement the function of the DCU in the method for controlling the smart meter to enter the network shown in FIG. 3. For the structure and function, refer to the embodiment shown in FIG. 8 or 9, and details are not described herein again.

The system 1300 can include a plurality of DCUs and a plurality of smart meters. When there are a large number of smart meters and DCUs in the system, the technical solution provided by the present application can significantly save labor costs and improve the efficiency of smart meter access.

In the several embodiments provided by the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division, and the actual implementation may have another division manner. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit. It is also possible that each unit physically exists alone, or two or more units may be integrated in one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application, in essence or the contribution to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or within the technical scope disclosed by the present invention. Alternatives are intended to be covered by the scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

A method for controlling a smart meter to access a network, comprising:

The data center unit DCU receives the network access request message sent by the smart meter, where the network access request message includes the table number of the smart meter and the address of the smart meter;

The DCU queries an access record according to an address of the smart meter;

When the address of the smart meter does not exist in the access record, the DCU sends a file request message to the primary station, where the file request message includes the table number of the smart meter and the identifier of the DCU. Receiving, by the DCU, a filing response message returned by the primary station, where the filing response message includes a table number and a filing result of the smart meter, and when determining that the filing result is successful, the DCU Adding an address of the smart meter to the access record, allowing the smart meter to access the network.
The method of claim 1 further comprising:

When the result of the filing is a failure, the DCU rejects the smart meter to access the network.
The method according to claim 1 or 2, wherein the network access request message further includes additional information of the smart meter;

When the address of the smart meter exists in the access record, the method further includes:

And when the DCU determines that the additional information of the smart meter is updated, sending an archive update message to the primary station, where the file update message includes an identifier of the DCU, a table number of the smart meter, and the Additional information for smart meters.
The method according to any one of claims 1 to 3, wherein before the DCU queries the access record according to the address of the smart meter, the method further includes:

The DCU determines that the number of smart meters accessing the DCU is less than a preset access threshold.
The method according to any one of claims 1 to 4, wherein before the DCU receives the access request message sent by the smart meter, the method further includes:

Sending, by the DCU, a broadcast message, where the broadcast message includes an identifier of the DCU;

Correspondingly, the network request message further includes an identifier of the DCU.
A method for controlling a smart meter to access a network, comprising:

The master station receives the filing request message sent by the DCU, where the filing request message includes the identifier of the DCU and the table number of the first smart meter;

The primary station queries the archive according to the table number of the first smart meter;

When the table number of the first smart meter does not exist in the archive, the primary station establishes an archive of the first smart meter in the archive according to the filing request message, where the The file of the smart meter includes a correspondence between the table number of the first smart meter and the identifier of the DCU, and sends a first file response message to the DCU, where the first file response message includes the The table number of the first smart meter and the first file result.
The method of claim 6 further comprising:

When the table number of the first smart meter exists in the archive, the primary station rejects the filing request of the DCU, and sends a second filing response message to the DCU, the second filing The response message includes a table number of the first smart meter and a second filing result.
The method of claim 6 further comprising:

When the table number of the first smart meter exists in the archive, the primary station updates the file of the first smart meter according to the filing request message, and sends the first built to the DCU File response message.
The method of any of claims 6 to 8, further comprising:

Receiving, by the primary station, an archive update message sent by the DCU, where the file update message includes an identifier of the DCU, a table number of the second smart meter, and additional information of the second smart meter;

When the archive of the second smart meter matching the table number of the second smart meter and the identifier of the DCU exists in the archive, the primary station uses additional information of the second smart meter Updating the file of the second smart meter.
A method for controlling a smart meter to access a network, comprising:

The data center unit DCU receives the network access request message sent by the smart meter, where the network access request message includes the table number of the smart meter and the address of the smart meter;

The DCU queries an access record according to an address of the smart meter;

When the address of the smart meter does not exist in the access record, the DCU adds an address of the smart meter to the access record, allows the smart meter to enter the network, and sends a file request to the primary station. The message requesting message includes the table number of the smart meter and the identifier of the DCU, so that the primary station establishes an archive of the smart meter according to the filing request message.
The method according to claim 10, wherein the network access request message further includes additional information of the smart meter;

When the address of the smart meter exists in the access record, the method further includes:

And when the DCU determines that the additional information of the smart meter is updated, sending an archive update message to the primary station, where the file update message includes an identifier of the DCU, a table number of the smart meter, and the Additional information for smart meters.
The method according to claim 10 or 11, wherein before the DCU queries the access record according to the address of the smart meter, the method further includes:

The DCU determines that the number of smart meters accessing the DCU is less than a preset access threshold.
A method for controlling a smart meter to access a network, comprising:

The master station receives the filing request message sent by the DCU, where the filing request message includes the identifier of the DCU and the table number of the first smart meter;

The primary station queries the archive according to the table number of the first smart meter;

When the table number of the first smart meter does not exist in the archive, the primary station establishes an archive of the first smart meter in the archive according to the filing request message, where the The file of a smart meter includes a correspondence between a table number of the first smart meter and an identifier of the DCU;

When the table number of the first smart meter exists in the archive, the primary station updates the file of the first smart meter according to the filing request message.
The method of claim 13 further comprising:

The primary station sends a filing response message to the DCU, where the filing response message includes a table number of the first smart meter.
The method of claim 13 or 14, further comprising:

Receiving, by the primary station, an archive update message sent by the DCU, where the file update message includes an identifier of the DCU, a table number of the second smart meter, and additional information of the second smart meter;

When the archive of the second smart meter matching the table number of the second smart meter and the identifier of the DCU exists in the archive, the primary station uses additional information of the second smart meter Updating the file of the second smart meter.
A data concentration unit DCU, comprising:

a receiving module, configured to receive a network access request message sent by the smart meter, where the network access request message includes a table number of the smart meter and an address of the smart meter;

a processing module, configured to query an access record according to an address of the smart meter; when an address of the smart meter does not exist in the access record, send a filing request message to the primary station, where the filing request message is Including the table number of the smart meter and the identifier of the DCU;

a sending module, configured to send the filing request message;

The receiving module is further configured to receive a filing response message returned by the primary station, where the filing response message includes a table number and a filing result of the smart meter;

The processing module is further configured to add an address of the smart meter to the access record when the result of determining the file creation is successful, and allow the smart meter to access the network.
The DCU of claim 16, wherein the processing module is further configured to reject the smart meter from entering the network when the filing result is a failure.
The DCU according to claim 16 or 17, wherein the network access request message further includes additional information of the smart meter;

The processing module is further configured to: when an address of the smart meter exists in the access record, determine whether the additional information of the smart meter is updated;

The sending module is further configured to: when the processing module determines that the additional information of the smart meter is updated, send an file update message to the primary station, where the file update message includes an identifier of the DCU, The meter number of the smart meter and the additional information of the smart meter.
The DCU according to any one of claims 16 to 18, further comprising a threshold The determining module is configured to determine whether the number of smart meters accessing the DCU is less than a preset access threshold.
A data centralized unit DCU, comprising: a processor and a memory;

The memory is configured to store an access record maintained by the processor for the DCU;

The processor is configured to receive a network access request message sent by the smart meter, where the network access request message includes a table number of the smart meter and an address of the smart meter; and querying the access according to the address of the smart meter Recording; when the address of the smart meter does not exist in the access record, sending a filing request message to the primary station, where the filing request message includes a table number of the smart meter and an identifier of the DCU; Receiving a filing response message returned by the primary station, where the filing response message includes a table number and a filing result of the smart meter, and when determining that the filing result is successful, in the access record Adding the address of the smart meter allows the smart meter to enter the network.
The DCU of claim 20, wherein the processor is further configured to reject the smart meter from entering the network when the filing result is a failure.
The DCU according to claim 20 or 21, wherein the network access request message further includes additional information of the smart meter;

When the address of the smart meter exists in the access record, the processor is further configured to send an file update message to the primary station when determining that the additional information of the smart meter is updated, the file The update message includes an identifier of the DCU, a table number of the smart meter, and additional information of the smart meter.
The DCU according to any one of claims 20 to 22, wherein the processor is further configured to determine the number of smart meters accessing the DCU before inquiring the access record according to the address of the smart meter. Less than the preset access threshold.
A primary station, comprising:

a receiving module, configured to receive a filing request message sent by the DCU, where the filing request message includes an identifier of the DCU and a table number of the first smart meter;

a processing module, configured to query an archive according to a table number of the first smart meter; when the table number of the first smart meter does not exist in the archive, according to the filing request message, in the file Library Establishing an archive of the first smart meter, the file of the first smart meter includes a correspondence between a table number of the first smart meter and an identifier of the DCU, and sending a first file response to the DCU a message, the first document response message includes a table number of the first smart meter and a first file creation result;

And a sending module, configured to send the first filing response message.
The primary station according to claim 24, wherein the processing module is further configured to reject the file request of the DCU when the table number of the first smart meter exists in the archive; Sending a second filing response message to the DCU, where the second filing response message includes a table number of the first smart meter and a second filing result;

The sending module is further configured to send the second filing response message.
The primary station according to claim 24, wherein said processing module is further configured to: when said table number of said first smart meter exists in said archive, said updating said said message according to said filing request message An archive of the first smart meter and transmitting the first filing response message to the DCU.
A primary station according to any one of claims 24 to 26, characterized in that

The receiving module is further configured to receive an archive update message sent by the DCU, where the file update message includes an identifier of the DCU, a table number of the second smart meter, and additional information of the second smart meter;

The processing module is further configured to: when the file of the second smart meter matching the table number of the second smart meter and the identifier of the DCU exists in the archive, use the second smart The additional information of the meter updates the file of the second smart meter.
A primary station, comprising: a processor and a memory;

The memory is configured to store an archive maintained by the processor for the primary station;

The processor is configured to receive a file request message sent by the DCU, where the file request message includes an identifier of the DCU and a table number of the first smart meter, and the file is queried according to the table number of the first smart meter. a library, when the file number of the first smart meter does not exist in the archive, the file of the first smart meter is established in the archive according to the filing request message, the first smart Instrument The file of the table includes a correspondence between the table number of the first smart meter and the identifier of the DCU, and sends a first file response message to the DCU, where the first file response message includes the first The meter number of the smart meter and the first file result.
The primary station according to claim 28, wherein the processor is further configured to reject the file request of the DCU when the table number of the first smart meter exists in the archive, and Sending a second filing response message to the DCU, where the second filing response message includes a table number of the first smart meter and a second filing result.
The primary station according to claim 28, wherein said processor is further configured to: when said table number of said first smart meter exists in said archive, said updating said said message according to said filing request message An archive of the first smart meter and transmitting the first filing response message to the DCU.
The primary station according to any one of claims 27 to 29, wherein the processor is further configured to receive an archive update message sent by the DCU, where the file update message includes an identifier of the DCU a table number of the second smart meter, and additional information of the second smart meter; when there is a second in the archive that matches a table number of the second smart meter and an identifier of the DCU When the file of the smart meter is used, the file of the second smart meter is updated with the additional information of the second smart meter.
A data concentration unit DCU, comprising:

a receiving module, configured to receive a network access request message sent by the smart meter, where the network access request message includes a table number of the smart meter and an address of the smart meter;

a processing module, configured to query an access record according to an address of the smart meter; when the address of the smart meter exists in the access record, allowing the smart meter to enter the network; when the access record does not exist When the address of the smart meter is described, the address of the smart meter is added to the access record, the smart meter is allowed to enter the network, and a filing request message is sent to the primary station, where the smart request message includes the smart The meter number of the meter and the identifier of the DCU;

And a sending module, configured to send the filing request message.
The DCU according to claim 32, wherein said network access request message is further included Include additional information of the smart meter;

The processing module is further configured to: when an address of the smart meter exists in the access record, determine whether the additional information of the smart meter is updated; when determining that the additional information of the smart meter is updated, The primary station sends a file update message, where the file update message includes an identifier of the DCU, a table number of the smart meter, and additional information of the smart meter

The sending module is further configured to send the file update message.
The DCU according to claim 32 or 33, wherein the processing module is further configured to determine whether the number of smart meters accessing the DCU is less than a preset access threshold.
A data centralized unit DCU, comprising: a processor and a memory;

The memory is configured to store an access record maintained by the processor for the DCU;

The processor is configured to receive a network access request message sent by the smart meter, where the network access request message includes a table number of the smart meter and an address of the smart meter; and querying the access according to the address of the smart meter Recording; when the address of the smart meter exists in the access record, allowing the smart meter to enter the network; when the address of the smart meter does not exist in the access record, adding in the access record The address of the smart meter allows the smart meter to enter the network, and the master station sends a file request message, where the file request message includes the table number of the smart meter and the identifier of the DCU.
The DCU according to claim 35, wherein the network access request message further includes additional information of the smart meter;

When the address of the smart meter exists in the access record, the processor is further configured to send an file update message to the primary station when determining that the additional information of the smart meter is updated, the file The update message includes an identifier of the DCU, a table number of the smart meter, and additional information of the smart meter.
The DCU according to claim 35 or claim 36, wherein the processor is further configured to determine whether the number of smart meters accessing the DCU is less than a pre-determination before the access record is queried according to the address of the smart meter. Set the access threshold.
A primary station, comprising:

a receiving module, configured to receive a filing request message sent by the DCU, where the filing request message includes an identifier of the DCU and a table number of the first smart meter;

a processing module, configured to query an archive according to a table number of the first smart meter; when the table number of the first smart meter does not exist in the archive, according to the filing request message, in the file Configuring an archive of the first smart meter in the library, the file of the first smart meter includes a correspondence between a table number of the first smart meter and an identifier of the DCU; When the meter number of the smart meter is updated, the file of the first smart meter is updated according to the filing request message.
A primary station according to claim 37, wherein:

The receiving module is further configured to receive an archive update message sent by the DCU, where the file update message includes an identifier of the DCU, a table number of the second smart meter, and additional information of the second smart meter;

The processing module is further configured to: when the file of the second smart meter matching the table number of the second smart meter and the identifier of the DCU exists in the archive, use the second smart The additional information of the meter updates the file of the second smart meter.
A primary station, comprising: a processor and a memory;

The memory is configured to store an archive maintained by the processor for the primary station;

The processor is configured to receive a file request message sent by the DCU, where the file request message includes an identifier of the DCU and a table number of the first smart meter, and the file is queried according to the table number of the first smart meter. a library, when the file number of the first smart meter does not exist in the archive, the file of the first smart meter is established in the archive according to the filing request message, the first smart The file of the meter includes a correspondence between the table number of the first smart meter and the identifier of the DCU; when the table number of the first smart meter exists in the archive, the update request is updated according to the file request message The file of the first smart meter.
The primary station according to claim 40, wherein the processor is further configured to receive an archive update message sent by the DCU, where the file update message includes an identifier of the DCU, and the second smart meter a table number, and additional information of the second smart meter; when there is an archive of the second smart meter in the archive that matches the table number of the second smart meter and the identifier of the DCU, Updating the file of the second smart meter with the additional information of the second smart meter.