CN112687093A - Low-voltage centralized meter reading method and device - Google Patents
Low-voltage centralized meter reading method and device Download PDFInfo
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- CN112687093A CN112687093A CN202110154303.9A CN202110154303A CN112687093A CN 112687093 A CN112687093 A CN 112687093A CN 202110154303 A CN202110154303 A CN 202110154303A CN 112687093 A CN112687093 A CN 112687093A
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/22—Parsing or analysis of headers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
Abstract
The invention discloses a low-voltage centralized meter reading method and a low-voltage centralized meter reading device, which comprise the following steps: receiving a 645 message sent by the concentrator through a preset RS485 interface; 645 message is a message obtained by translating the acquisition instruction after the concentrator receives the acquisition instruction issued by the preset metering master station; unpacking the 645 message to obtain a communication address; issuing 645 messages to the electric meters corresponding to the communication addresses; receiving a response message returned by the ammeter based on the 645 message, and sending the response message to the concentrator; the concentrator is used for uploading a response message to the metering master station when receiving a meter reading instruction sent by the metering master station. According to the invention, the district communication converter is connected between the concentrator and the electric meter, different electric meter data are acquired through the district communication converter and are forwarded to the metering master station through the concentrator, so that the reading of the electric meter data by the metering master station is not influenced by different communication interfaces of the communication modules, and the reading of the electric meter data of the district heterogeneous PLC communication module is realized.
Description
The application claims priority from the application of Chinese patent application having application number 202011162905.0, which is filed 10/27/2020.
Technical Field
The invention relates to the technical field of low-voltage centralized meter reading, in particular to a low-voltage centralized meter reading method and device.
Background
In recent years, the construction of low-voltage meter reading of domestic power systems gradually realizes full coverage. The low-voltage centralized meter reading local communication technology is rapidly developed. At present, a field bus of low-voltage centralized meter reading mainly adopts a PLC communication technology, but there are various technical systems for PLC communication, such as a narrow-band Power Line Carrier (PLC), a micro-power wireless (RF), a micro-power + power line carrier dual mode (RF + PLC), a Broadband Power Line Carrier (BPLC), a high-speed power line carrier (HPLC), and the like.
At present, interconnection communication interface protocols are established in micropower wireless and broadband power line carrier technologies respectively, and plug-and-play and interchange communication of communication modules can be realized. However, in the existing low-storage-amount centralized meter reading local communication technology, interconnection and intercommunication cannot be realized among narrow-band power line carriers of different manufacturers and between narrow bands and wide bands, the transmission rate and the stability are poor, the increasing data and service expansion requirements are difficult to meet, and great difficulty is brought to field operation and maintenance.
In the existing low-voltage centralized meter reading system, communication schemes between a concentrator and a meter are diversified, the communication technical schemes of communication module manufacturers are basically independently researched and developed, a uniform technical standard does not exist, the situation that the communication schemes cannot be compatible is caused, and great difficulty is caused to operation and maintenance management of a transformer area. Communication modules of different manufacturers cannot be interconnected, intercommunicated and interchanged, a barrier between station area management is formed, and difficulty is caused to installation, debugging, operation and maintenance of field equipment.
In addition, the situation that the communication technology generated by load adjustment between adjacent distribution areas is mixed in the same distribution area is very common, and the data acquisition application of the low-voltage centralized meter reading system is seriously influenced.
Disclosure of Invention
The invention provides a low-voltage centralized reading method and device, which are used for solving the technical problem that a metering master station cannot correctly read ammeter data of heterogeneous PLC communication modules under the condition that the topology of the existing low-voltage distribution room comprises the PLC communication modules of different types.
The invention provides a low-voltage centralized meter reading method which is applied to a low-voltage centralized meter reading system, wherein the low-voltage centralized meter reading system comprises a platform area communication converter, a concentrator communicated with the platform area communication converter and a plurality of electric meters; the method comprises the following steps:
receiving a 645 message sent by the concentrator through a preset RS485 interface; the 645 message is a message obtained by translating an acquisition instruction after the concentrator receives the acquisition instruction issued by a preset metering master station;
unpacking the 645 message to obtain a communication address;
the 645 message is issued to the ammeter corresponding to the communication address;
receiving a response message returned by the ammeter based on the 645 message, and sending the response message to the concentrator; and the concentrator is used for uploading the response message to the metering master station when receiving a meter reading instruction issued by the metering master station.
Optionally, the step of issuing the 645 message to the electric meter corresponding to the communication address includes:
when the communication address is an electric meter address, inquiring a serial port and an electric meter address corresponding table in a preset local memory, and acquiring a first communication serial port corresponding to the electric meter address;
and issuing the 645 message to the electric meter corresponding to the electric meter address through the first communication serial port.
Optionally, the step of issuing the 645 message to the electric meter corresponding to the communication address includes:
when the communication address is a broadcast address, inquiring a serial port and ammeter address corresponding table in a preset local memory, and acquiring ammeter addresses corresponding to a plurality of preset second communication serial ports;
and issuing the 645 messages to the electric meter addresses respectively corresponding to the plurality of second communication serial ports through the plurality of second communication serial ports.
Optionally, the platform area communication converter is configured with a three-phase PLC of multiple communication systems; the electric meter is configured with a single-phase PLC, and the method further comprises:
based on a preset serial port, issuing a networking instruction to a target single-phase PLC with the same communication system through the three-phase PLC, and establishing network connection with a target electric meter where the target single-phase PLC is located;
after the network connection is established, acquiring a target ammeter address of the target ammeter;
generating a corresponding relation between the target ammeter address and the preset serial port;
storing the corresponding relation in the serial port and ammeter address corresponding table;
and storing the serial port and electric meter address corresponding table in the preset local memory.
The invention also provides a low-voltage centralized meter reading device which is applied to a low-voltage centralized meter reading system, wherein the low-voltage centralized meter reading system comprises a transformer area communication converter, a concentrator communicated with the transformer area communication converter and a plurality of electric meters; the device comprises:
a 645 message receiving module, configured to receive a 645 message sent by the concentrator through a preset RS485 interface; the 645 message is a message obtained by translating an acquisition instruction after the concentrator receives the acquisition instruction issued by a preset metering master station;
the unpacking module is used for unpacking the 645 message to obtain a communication address;
a 645 message issuing module, configured to issue the 645 message to an electric meter corresponding to the communication address;
a response message receiving and forwarding module, configured to receive a response message returned by the electric meter based on the 645 message, and send the response message to the concentrator; and the concentrator is used for uploading the response message to the metering master station when receiving a meter reading instruction issued by the metering master station.
Optionally, the 645 message issuing module includes:
the first communication serial port acquisition submodule is used for inquiring a serial port and electric meter address corresponding table in a preset local memory when the communication address is an electric meter address, and acquiring a first communication serial port corresponding to the electric meter address;
and the first 645 message issuing sub-module is used for issuing the 645 message to the electric meter corresponding to the electric meter address through the first communication serial port.
Optionally, the 645 message issuing module includes:
the ammeter address acquisition submodule is used for inquiring a serial port and ammeter address corresponding table in a preset local memory when the communication address is a broadcast address, and acquiring ammeter addresses corresponding to a plurality of preset second communication serial ports;
and the second 645 message issuing sub-module is configured to issue the 645 messages to the electric meter addresses respectively corresponding to the plurality of second communication serial ports through the plurality of second communication serial ports.
Optionally, the platform area communication converter is configured with a three-phase PLC of multiple communication systems; the ammeter is equipped with single-phase PLC, the device still includes:
the network connection establishing module is used for issuing a networking instruction to a target single-phase PLC with the same communication system through the three-phase PLC based on a preset serial port and establishing network connection with a target ammeter where the target single-phase PLC is located;
the target electric meter address acquisition module is used for acquiring the target electric meter address of the target electric meter after the network connection is established;
the corresponding relation generating module is used for generating the corresponding relation between the target ammeter address and the preset serial port;
the corresponding relation storage module is used for storing the corresponding relation in the serial port and electric meter address corresponding table;
and the serial port and electric meter address corresponding table storage module is used for storing the serial port and electric meter address corresponding table in the preset local memory.
The invention also provides an electronic device comprising a processor and a memory:
the memory is used for storing program codes and transmitting the program codes to the processor;
the processor is configured to execute the low voltage meter reading method according to instructions in the program code.
The invention provides a computer readable storage medium for storing program code for performing a low voltage gather reading method as described in any one of the above.
According to the technical scheme, the invention has the following advantages: the invention provides a low-voltage centralized meter reading method, which comprises the following steps: receiving a 645 message sent by the concentrator through a preset RS485 interface; 645 message is a message obtained by translating the acquisition instruction after the concentrator receives the acquisition instruction issued by the preset metering master station; unpacking the 645 message to obtain a communication address; issuing 645 messages to the electric meters corresponding to the communication addresses; receiving a response message returned by the ammeter based on the 645 message, and sending the response message to the concentrator; the concentrator is used for uploading a response message to the metering master station when receiving a meter reading instruction sent by the metering master station. According to the invention, the district communication converter is connected between the concentrator and the electric meter, different electric meter data are acquired through the district communication converter and are forwarded to the metering master station through the concentrator, so that the reading of the electric meter data by the metering master station is not influenced by different communication interfaces of the communication modules, and the reading of the electric meter data of the district heterogeneous PLC communication module is realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a typical PLC-hybrid communication topology;
FIG. 2 is a flowchart illustrating steps of a low-voltage meter reading method according to an embodiment of the present invention;
fig. 3 is a communication topology structure of a low-voltage meter reading system according to an embodiment of the present invention;
FIG. 4 is a flowchart illustrating steps of a low-voltage meter reading method according to another embodiment of the present invention;
fig. 5 is an interaction diagram of a platform communication switch according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a data acquisition process of the cell communication converter;
fig. 7 is a block diagram of a low-voltage meter reading device according to an embodiment of the present invention.
Detailed Description
Referring to fig. 1, fig. 1 illustrates a typical PLC-hybrid communication topology, including a concentrator, an electric meter, and a power line A, B, C, N. Wherein, a three-phase PLC communication module is arranged in the concentrator; the electric meter is provided with a single-phase PLC communication module (such as PLC1, PLC2 and the like). Under the same low-voltage transformer area, the concentrator cannot communicate with some electric meters easily due to load adjustment or manual operation and maintenance of adjacent transformer areas. Originally, be isomorphic network between the single-phase PLC communication module of three-phase PLC communication module of concentrator and the ammeter, can the mutual network communication (the three-phase PLC communication module and the single-phase PLC communication module of label PLC1 in the picture), but including behind the PLC module of non-the same type in the district topology (the label is PLC2 in the picture), can lead to the measurement master station can't correctly copy the ammeter data of the heterogeneous PLC module.
The embodiment of the invention provides a low-voltage centralized reading method and a low-voltage centralized reading system, which are used for solving the technical problem that a metering master station cannot correctly read ammeter data of heterogeneous PLC communication modules under the condition that the topology of the existing low-voltage distribution room comprises the PLC communication modules of different types.
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 2, fig. 2 is a flowchart illustrating steps of a low-voltage meter reading method according to an embodiment of the present invention.
The invention provides a low-voltage centralized meter reading method which is applied to a low-voltage centralized meter reading system, wherein the low-voltage centralized meter reading system comprises a transformer area communication converter, a concentrator communicated with the transformer area communication converter and a plurality of electric meters; the connection relation is as shown in fig. 3, the concentrator performs data interaction with the district communication converter through the RS485 interface, the district communication converter communicates with the electric meter through the power line A, B, C, N, and the electric meter is connected to the power line through the local communication module, namely the single-phase PLC1 and the single-phase PLC 2. The communication rate of the platform area communication converter and an RS485 interface of the concentrator is not lower than 115200bps, and the communication rate of the platform area communication converter and TTL serial ports of different PLC modules is 2400bps or 9600 bps.
The concentrator is a central management device and a control device of a remote centralized meter reading system and is responsible for regularly reading terminal data, transmitting system commands, communicating data, managing a network, recording events, transversely transmitting data and the like.
The platform area communication converter can convert various types of free port protocols into standard Modbus _ RTU protocols, communicates with standard products such as a PLC (programmable logic controller) and a touch screen, can convert the standard Modbus _ RTU protocols into free protocols corresponding to other equipment, and the realization of functions completely depends on software programs.
The ammeter is short for the electric energy meter. An electric energy meter is an instrument for measuring electric energy, also called watt-hour meter, fire meter, kilowatt-hour meter, and refers to instruments for measuring various electric quantities.
PLC is a programmable logic controller, which is a digital arithmetic operation electronic system designed specifically for use in an industrial environment. It uses a programmable memory, in which the instructions for implementing logical operation, sequence control, timing, counting and arithmetic operation are stored, and utilizes digital or analog input and output to control various mechanical equipments or production processes.
The method can comprise the following steps:
in practical application, when the metering master station issues an acquisition instruction to the concentrator, the concentrator translates the acquisition instruction into a 645 message and issues the 645 message to the transformer area communication converter through the RS485 interface.
after receiving the 645 message, the transformer area communication converter unpacks the 645 message to obtain a communication address.
after the communication address is obtained, the electric meter corresponding to the communication address is determined, and a message can be issued 645 to the electric meter to indicate the electric meter to upload electric meter data.
After receiving the response message returned by the electric meter based on the 645 message, the district communication converter can transmit the response message to the concentrator, and after receiving the 645 message, the concentrator analyzes and temporarily stores the data. After the concentrator receives a meter reading instruction sent by the metering master station, the data collected by the concentrator previously is uploaded, and then the whole data collection process can be completed.
According to the invention, the district communication converter is connected between the concentrator and the electric meter, different electric meter data are acquired through the district communication converter and are forwarded to the metering master station through the concentrator, so that the reading of the electric meter data by the metering master station is not influenced by different communication interfaces of the communication modules, and the reading of the electric meter data of the district heterogeneous PLC communication module is realized.
Referring to fig. 4, fig. 4 is a flowchart illustrating a low-voltage meter reading method according to another embodiment of the present invention. The method specifically comprises the following steps:
in the embodiment of the invention, the platform area communication converter is provided with a three-phase PLC with various communication systems; the electric meter is configured with a single phase PLC.
In the embodiment of the invention, the platform area communication converter operates the three-phase PLC module to issue the networking instruction through the TTL serial port, so that the electric meter conforming to the three-phase PLC communication system establishes network connection with the platform area communication converter through the networking instruction.
In one example, as shown in fig. 5, the platform communication converter generates a networking command by the CPU, and operates the three-phase PLC and the single-phase PLC to perform networking through the TTL serial port. Taking the three-phase PLC1 as an example, the platform area communication converter operates the three-phase PLC1 through a TTL serial port to issue a networking command, and establishes network connection with the single-phase PLC1 of the electric meter with the same communication system. Accordingly, the station area communication converter may perform the same operation as the three-phase PLC1 through the three-phase PLC2 and the three-phase PLC3, and correspondingly establish a network connection with the single-phase PLC2 and the single-phase PLC 3.
It should be noted that the number of the three-phase PLCs on the transformer area communication converter is not limited to three, and the three-phase PLCs can be designed into pluggable modules, so that field replacement is facilitated, and the flexibility of field operation and maintenance is improved. The connection process of the platform area communication converter and the corresponding electric meters is established in series through the three-phase PLC, the platform area communication converter cannot be connected with the plurality of electric meters simultaneously, and communication failure caused by same frequency interference is avoided. And the concentrator and the CPU carry out data interaction through an RS485 interface.
after the network connection between the transformer area communication converter and the electric meter is established, the electric meter address of the electric meter can be obtained, the corresponding relation with the corresponding serial port is established, the serial port and electric meter address corresponding table is generated based on the corresponding relation between different three-phase PLCs and corresponding single-phase PLCs, and the serial port and electric meter address corresponding table is kept in the local memory.
in practical application, when the metering master station issues an acquisition instruction to the concentrator, the concentrator translates the acquisition instruction into a 645 message and issues the 645 message to the transformer area communication converter through the RS485 interface.
after receiving the 645 message, the transformer area communication converter unpacks the 645 message to obtain a communication address.
in one example, step 408 may include:
when the communication address is an ammeter address, inquiring a serial port and an ammeter address corresponding table in a preset local memory, and acquiring a first communication serial port corresponding to the ammeter address;
and issuing 645 messages to the electric meter corresponding to the electric meter address through the first communication serial port.
Specifically, when the communication address is the electric meter address, the locally maintained serial port and the electric meter address corresponding table may be queried, and the 645 message is issued to the electric meter from the corresponding serial port.
In another example, step 408 may include:
when the communication address is a broadcast address, inquiring a serial port and ammeter address corresponding table in a preset local memory, and acquiring ammeter addresses corresponding to a plurality of preset second communication serial ports;
and issuing 645 messages to the electric meter addresses respectively corresponding to the plurality of second communication serial ports through the plurality of second communication serial ports.
Specifically, when the communication address is a broadcast address, messages may be sequentially issued 645 from a plurality of TTL serial ports.
After receiving the response message returned by the electric meter based on the 645 message, the district communication converter can transmit the response message to the concentrator, and after receiving the 645 message, the concentrator analyzes and temporarily stores the data. After the concentrator receives a meter reading instruction sent by the metering master station, the data collected by the concentrator previously is uploaded, and then the whole data collection process can be completed.
For ease of understanding, please refer to fig. 6, fig. 6 is a schematic diagram of a data acquisition process of the cell communication converter. The method specifically comprises the following steps:
1. the transformer area communication converter is self-networked with an electric meter PLC1, a PLC2 and a PLC 3;
2. the metering master station issues an acquisition instruction to the concentrator through a remote communication protocol;
3. the concentrator translates and collects the order and issues 645 messages to the area communication converter;
4. the station area communication converter judges a TTL serial port issued by data;
5. issuing 645 messages to an electric meter PLC (such as an electric meter PLC2) through a serial port;
6. receiving a response message aiming at the 645 message;
7. forwarding the response message to the concentrator;
8. the concentrator temporarily stores data;
9. and when the metering master station issues a meter reading instruction, the concentrator uploads the temporarily stored data to the metering master station.
According to the invention, the district communication converter is connected between the concentrator and the electric meter, different electric meter data are acquired through the district communication converter and are forwarded to the metering master station through the concentrator, so that the reading of the electric meter data by the metering master station is not influenced by different communication interfaces of the communication modules, and the reading of the electric meter data of the district heterogeneous PLC communication module is realized.
Referring to fig. 7, fig. 7 is a block diagram of a low voltage meter reading device according to an embodiment of the present invention.
The embodiment of the invention provides a low-voltage centralized meter reading device which is applied to a low-voltage centralized meter reading system, wherein the low-voltage centralized meter reading system comprises a transformer area communication converter, a concentrator communicated with the transformer area communication converter and a plurality of electric meters; the device comprises:
a 645 message receiving module 701, configured to receive a 645 message sent by the concentrator through a preset RS485 interface; 645 message is a message obtained by translating the acquisition instruction after the concentrator receives the acquisition instruction issued by the preset metering master station;
the unpacking module 702 is configured to unpack the 645 message to obtain a communication address;
a 645 message issuing module 703, configured to issue 645 messages to the electric meter corresponding to the communication address;
the response message receiving and forwarding module 704 is configured to receive a response message returned by the electric meter based on the 645 message, and send the response message to the concentrator; the concentrator is used for uploading a response message to the metering master station when receiving a meter reading instruction sent by the metering master station.
In this embodiment of the present invention, the 645 message issuing module 703 includes:
the first communication serial port acquisition submodule is used for inquiring a serial port and ammeter address corresponding table in a preset local memory when the communication address is an ammeter address, and acquiring a first communication serial port corresponding to the ammeter address;
and the first 645 message issuing submodule is used for issuing 645 messages to the electric meter corresponding to the electric meter address through the first communication serial port.
In this embodiment of the present invention, the 645 message issuing module 703 includes:
the electric meter address acquisition submodule is used for inquiring a serial port and electric meter address corresponding table in a preset local memory when the communication address is a broadcast address, and acquiring electric meter addresses corresponding to a plurality of preset second communication serial ports;
and the second 645 message issuing sub-module is configured to issue 645 messages to the electric meter addresses respectively corresponding to the plurality of second communication serial ports through the plurality of second communication serial ports.
In the embodiment of the invention, the platform area communication converter is provided with a three-phase PLC with various communication systems; the single-phase PLC of ammeter configuration, the device still includes:
the network connection establishing module is used for issuing a networking instruction to a target single-phase PLC with the same communication system through a three-phase PLC based on a preset serial port and establishing network connection with a target ammeter where the target single-phase PLC is located;
the target electric meter address acquisition module is used for acquiring a target electric meter address of a target electric meter after network connection is established;
the corresponding relation generating module is used for generating the corresponding relation between the target ammeter address and a preset serial port;
the corresponding relation storage module is used for storing the corresponding relation in a serial port and ammeter address corresponding table;
and the serial port and electric meter address corresponding table storage module is used for storing the serial port and electric meter address corresponding table in a preset local memory.
The invention also provides an electronic device comprising a processor and a memory:
the memory is used for storing the program codes and transmitting the program codes to the processor;
the processor is configured to execute the low voltage gather method of embodiments of the present invention according to instructions in the program code.
The invention also provides a computer readable storage medium for storing program codes for executing the low-voltage meter reading method of the embodiment of the invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of implementing the solution of the present embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a 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 stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A low-voltage centralized meter reading method is characterized by being applied to a low-voltage centralized meter reading system, wherein the low-voltage centralized meter reading system comprises a platform area communication converter, a concentrator communicated with the platform area communication converter and a plurality of electric meters; the method comprises the following steps:
receiving a 645 message sent by the concentrator through a preset RS485 interface; the 645 message is a message obtained by translating an acquisition instruction after the concentrator receives the acquisition instruction issued by a preset metering master station;
unpacking the 645 message to obtain a communication address;
the 645 message is issued to the ammeter corresponding to the communication address;
receiving a response message returned by the ammeter based on the 645 message, and sending the response message to the concentrator; and the concentrator is used for uploading the response message to the metering master station when receiving a meter reading instruction issued by the metering master station.
2. The method according to claim 1, wherein the step of issuing the 645 message to the electric meter corresponding to the communication address includes:
when the communication address is an electric meter address, inquiring a serial port and an electric meter address corresponding table in a preset local memory, and acquiring a first communication serial port corresponding to the electric meter address;
and issuing the 645 message to the electric meter corresponding to the electric meter address through the first communication serial port.
3. The method according to claim 1, wherein the step of issuing the 645 message to the electric meter corresponding to the communication address includes:
when the communication address is a broadcast address, inquiring a serial port and ammeter address corresponding table in a preset local memory, and acquiring ammeter addresses corresponding to a plurality of preset second communication serial ports;
and issuing the 645 messages to the electric meter addresses respectively corresponding to the plurality of second communication serial ports through the plurality of second communication serial ports.
4. The method according to claim 2 or 3, wherein the platform area communication converter is configured with a three-phase PLC of a plurality of communication systems; the electric meter is configured with a single-phase PLC, and the method further comprises:
based on a preset serial port, issuing a networking instruction to a target single-phase PLC with the same communication system through the three-phase PLC, and establishing network connection with a target electric meter where the target single-phase PLC is located;
after the network connection is established, acquiring a target ammeter address of the target ammeter;
generating a corresponding relation between the target ammeter address and the preset serial port;
storing the corresponding relation in the serial port and ammeter address corresponding table;
and storing the serial port and electric meter address corresponding table in the preset local memory.
5. A low-voltage centralized meter reading device is applied to a low-voltage centralized meter reading system, wherein the low-voltage centralized meter reading system comprises a platform area communication converter, a concentrator communicated with the platform area communication converter and a plurality of electric meters; the device comprises:
a 645 message receiving module, configured to receive a 645 message sent by the concentrator through a preset RS485 interface; the 645 message is a message obtained by translating an acquisition instruction after the concentrator receives the acquisition instruction issued by a preset metering master station;
the unpacking module is used for unpacking the 645 message to obtain a communication address;
a 645 message issuing module, configured to issue the 645 message to an electric meter corresponding to the communication address;
a response message receiving and forwarding module, configured to receive a response message returned by the electric meter based on the 645 message, and send the response message to the concentrator; and the concentrator is used for uploading the response message to the metering master station when receiving a meter reading instruction issued by the metering master station.
6. The apparatus of claim 5, wherein the 645 message issuing module comprises:
the first communication serial port acquisition submodule is used for inquiring a serial port and electric meter address corresponding table in a preset local memory when the communication address is an electric meter address, and acquiring a first communication serial port corresponding to the electric meter address;
and the first 645 message issuing sub-module is used for issuing the 645 message to the electric meter corresponding to the electric meter address through the first communication serial port.
7. The apparatus of claim 5, wherein the 645 message issuing module comprises:
the ammeter address acquisition submodule is used for inquiring a serial port and ammeter address corresponding table in a preset local memory when the communication address is a broadcast address, and acquiring ammeter addresses corresponding to a plurality of preset second communication serial ports;
and the second 645 message issuing sub-module is configured to issue the 645 messages to the electric meter addresses respectively corresponding to the plurality of second communication serial ports through the plurality of second communication serial ports.
8. The apparatus according to claim 6 or 7, wherein the platform area communication converter is configured with a three-phase PLC of a plurality of communication systems; the ammeter is equipped with single-phase PLC, the device still includes:
the network connection establishing module is used for issuing a networking instruction to a target single-phase PLC with the same communication system through the three-phase PLC based on a preset serial port and establishing network connection with a target ammeter where the target single-phase PLC is located;
the target electric meter address acquisition module is used for acquiring the target electric meter address of the target electric meter after the network connection is established;
the corresponding relation generating module is used for generating the corresponding relation between the target ammeter address and the preset serial port;
the corresponding relation storage module is used for storing the corresponding relation in the serial port and electric meter address corresponding table;
and the serial port and electric meter address corresponding table storage module is used for storing the serial port and electric meter address corresponding table in the preset local memory.
9. An electronic device, comprising a processor and a memory:
the memory is used for storing program codes and transmitting the program codes to the processor;
the processor is configured to execute the low voltage gather method of any one of claims 1-4 according to instructions in the program code.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium is configured to store program code for performing the low voltage gather method of any of claims 1-4.
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| CN112365700A (en) | 2021-02-12 |
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