Multi-meter centralized reading method and system, intelligent electric meter and storage medium

Abstract

The invention relates to the technical field of meter reading, in particular to a multi-meter centralized reading method, which comprises the following steps of: acquiring metering information of each meter in a plurality of meters; based on an Internet of Things protocol MQTT, converting the metering information of each meter into MQTT information of each meter; the MQTT information of each meter is sent to a management system corresponding to each meter through a gateway of the intelligent electric meter, and the management system comprises an agent component of an MQTT protocol. According to the method, the data information of various types of meters is uniformly collected and then reported to the corresponding management system, so that resource waste caused by repeated construction of meter reading channels can be reduced, the meter reading process is simplified, the meter reading efficiency and the information transmission efficiency of the multiple meters are improved, the meter reading cost of the multiple meters is reduced, and resource waste is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of meter reading, and in particular to a multi-meter centralized meter reading method, system, smart meter and storage medium based on the Internet of Things protocol MQTT. Background Art

[0002] At present, the data information of meters such as electricity meters, water meters, gas meters, and heat meters is first reported to the power department through the power line, and then distributed to the corresponding electricity meter department, water meter department, gas meter department, heat meter department, etc. The data information of each meter consumes a lot of manpower in the process of transmission, distribution, and statistics, and the process is cumbersome. However, meters such as electricity meters, water meters, gas meters, and heat meters have many similarities in the meter reading process, but the data information of each meter on site is collected through an independent network. In addition, due to the limitations of the working environment, the metering data of various types of meters cannot be easily collected and reported, so manual collection of metering data is required. Therefore, multiple meters have the problems of low meter reading efficiency and high meter reading cost. Summary of the invention

[0003] The embodiments of the present application provide a multi-meter centralized meter reading method, system, smart meter and storage medium, thereby solving the technical problems of low meter reading efficiency and high meter reading cost of multiple meters in the prior art, and realizing unified collection of data information of various types of meters and then reporting it to the corresponding management system, which can not only reduce the waste of resources caused by repeated construction of meter reading channels, but also simplify the meter reading process, improve the meter reading efficiency and information transmission efficiency of multiple meters, reduce the cost of multi-meter meter reading, avoid waste of resources and other technical effects.

[0004] In a first aspect, an embodiment of the present invention provides a multi-meter centralized reading method, which is applied to a smart meter in a multi-meter centralized reading system, and the method includes:

[0005] Collecting metering information of each meter in a plurality of meters;

[0006] Based on the Internet of Things protocol MQTT, the metering information of each meter is converted into the MQTT information of each meter;

[0007] The MQTT information of each meter is sent to a management system corresponding to each meter through the gateway of the smart meter, and the management system includes a proxy component of the MQTT protocol.

[0008] Preferably, the metering information of each meter includes: metering information protocol type, meter address, target management system address, metering information control code, metering information data content and metering information checksum;

[0009] The method of converting the metering information of each meter into the MQTT information of each meter based on the Internet of Things protocol MQTT also includes:

[0010] For the metering information of each meter, obtaining a metering information checksum of the metering information;

[0011] If the metering information checksum of the metering information can be parsed through the protocol corresponding to the metering information, the metering information is converted into MQTT information, and the target management system address of the metering information is set to the target management system address of the MQTT information;

[0012] The metering information of each meter performs the above-mentioned acquisition operation and conversion operation to obtain the target management system address of the MQTT information of each meter and the MQTT information of each meter.

[0013] Preferably, converting the metering information of the meter into MQTT information of the meter includes:

[0014] Using the metering information protocol type of the metering information as the topic name of the MQTT information;

[0015] Using the metering information control code and metering information data content of the metering information as the payload of the MQTT information;

[0016] Using the meter address of the metering information as the client identifier;

[0017] The MQTT information is obtained according to the topic name, payload and client identifier of the MQTT information.

[0018] Preferably, after obtaining the checksum of the measurement information, the method further includes:

[0019] If each protocol of the smart meter fails to parse the checksum of the metering information, the metering information is discarded.

[0020] Preferably, sending the MQTT information of each meter to a management system corresponding to each meter includes:

[0021] According to the target management system address of the MQTT information of each meter, the MQTT information of each meter is transparently transmitted to the corresponding management system.

[0022] Preferably, it also includes:

[0023] Get the message message of the management system;

[0024] Parse the message message through the Internet of Things protocol MQTT to obtain the message message protocol type, management system address, target meter address, message message control code, and message message data content of the message message;

[0025] According to the message protocol type, reorganize the management system address, the target meter address, the message control code and the message data content to obtain a device message;

[0026] According to the target meter address, the device message is sent to the meter corresponding to the message message.

[0027] Preferably, it also includes:

[0028] When there is an intelligent gateway in the multi-meter centralized meter reading system, the MQTT information of each meter is sent to the intelligent gateway, so that the intelligent gateway transmits the MQTT information of each meter to the corresponding management system according to the target management system address of the MQTT information of each meter.

[0029] Based on the same inventive concept, in a second aspect, the present invention also provides a multi-meter centralized meter reading system, comprising: a plurality of management systems, a smart meter and a plurality of meters;

[0030] One end of the smart meter is connected to the multiple meters, and the other end is connected to the multiple management systems. The smart meter is used to execute the steps of the multi-meter centralized reading method described in the first aspect.

[0031] Based on the same inventive concept, in a third aspect, the present invention provides a smart electric meter, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of a multi-meter centralized meter reading method when executing the program.

[0032] Based on the same inventive concept, in a fourth aspect, the present invention provides a storage medium for a smart meter, wherein the computer-readable storage medium stores a computer program, and when the program is executed by a processor, the steps of the multi-meter centralized meter reading method are implemented.

[0033] One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:

[0034] The embodiment of the present invention provides a multi-meter centralized reading method, which first collects the metering information of each meter in a plurality of meters. Then, based on the Internet of Things protocol MQTT (Message Queuing Telemetry Transport, message queue telemetry transmission), the metering information of each meter is converted into the MQTT information of each meter. Then, through the gateway of the smart meter, the MQTT information of each meter is sent to the management system corresponding to each meter. Therefore, the multi-meter centralized reading method of this embodiment performs data conversion and data transmission through the MQTT protocol, and transmits the metering information of each meter to the corresponding management system, so that the method has high efficiency, reliability, low power consumption, scalability, security and real-time performance. In addition, the data information of each type of meter is uniformly collected and then reported to the corresponding management system, which can not only reduce the waste of resources caused by the repeated construction of meter reading channels, but also simplify the meter reading process, improve the meter reading efficiency and information transmission efficiency of multiple meters, reduce the cost of multi-meter meter reading, and avoid waste of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Also, throughout the accompanying drawings, the same reference figures are used to represent the same components. In the drawings:

[0036] Figure 1 A schematic diagram of the steps of the multi-meter centralized meter reading method in an embodiment of the present invention is shown;

[0037] Figure 2 A schematic diagram of the structure of a multi-meter centralized meter reading system in an embodiment of the present invention is shown;

[0038] Figure 3 A schematic diagram showing the structure of an MQTT message in an embodiment of the present invention is shown;

[0039] Figure 4 A schematic diagram of the structure of a fixed header in an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0040] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0041] Embodiment 1

[0042] The first embodiment of the present invention provides a multi-meter centralized reading method, which is applied to a smart meter in a multi-meter centralized reading system, such as Figure 1 As shown, the method includes:

[0043] S101, collecting metering information of each meter in a plurality of meters;

[0044] S102, based on the Internet of Things protocol MQTT, converting the metering information of each meter into MQTT information of each meter;

[0045] S103, sending the MQTT information of each meter to the management system corresponding to each meter through the gateway of the smart meter, and the management system includes a proxy component of the MQTT protocol.

[0046] The multi-meter collective reading method of this embodiment is applied to a multi-meter collective reading system, especially to smart meters in a multi-meter collective reading system. Figure 2 As shown, the multi-meter centralized reading system includes: multiple management systems, smart meters and multiple meters. Multiple management systems include but are not limited to: gas meter management system, electricity meter management system, water meter management system. Multiple meters include but are not limited to: gas meters, electricity meters, water meters. One end of the smart meter is connected to multiple meters, and the other end is connected to multiple management systems. The smart meter and the management system are connected through a low-voltage power line high-speed carrier communication channel. The smart meter is connected to multiple meters through wireless communication. Meters of various types no longer need to transmit data through cables or other physical channels. Wireless communication technology does not require wires for data transmission, and wireless technology has high communication security, and wireless signals are difficult to be eavesdropped or interfered with. The various types of meters mentioned in this embodiment can report metering information to the smart meter through wireless communication technology, which not only reduces the waste of resources caused by repeated construction of meter reading channels, but also ensures the security of data transmission.

[0047] The multi-meter centralized reading system also includes: an intelligent gateway. In the presence of an intelligent gateway, the smart meter is connected to the management system through the intelligent gateway, and the smart meter and the intelligent gateway are connected to each other through a low-voltage power line high-speed carrier communication channel. In this embodiment, the low-voltage power line high-speed carrier communication channel adopts the MQTT communication protocol for transmission, further improving the efficiency, security and reliability of data transmission. The management system, smart meter and intelligent gateway are all equipped with an MQTT broker component. The functions of the management system, smart meter and meter are explained in the specific implementation steps of the following multi-meter centralized reading method.

[0048] It should be noted that the Internet of Things protocol MQTT (Message Queuing Telemetry Transport) is a message transmission protocol based on a client-server architecture. It uses a publish / subscribe message model to provide one-to-many message publishing, and also provides network connections based on TCP / IP, supporting QoS service quality levels. MQTT has low overhead, can use the will mechanism to notify the client of abnormal disconnection, and supports the heartbeat mechanism. MQTT Broker is the core component of the MQTT protocol, that is, the proxy component of the MQTT protocol. It is a lightweight, publish / subscribe message transmission protocol that is widely used in IOT (Internet of Things) and M2M (Machine to Machine) communications.

[0049] In this embodiment, the metering information of each meter in the multiple meters is first collected. Then, based on the Internet of Things protocol MQTT (Message Queuing Telemetry Transport), the metering information of each meter is converted into the MQTT information of each meter. Then, through the gateway of the smart meter, the MQTT information of each meter is sent to the management system corresponding to each meter. Therefore, the multi-meter collection method of this embodiment performs data conversion and data transmission through the MQTT protocol, and transmits the metering information of each meter to the corresponding management system, so that the method has high efficiency, reliability, low power consumption, scalability, security and real-time performance. In addition, the data information of each type of meter is uniformly collected and then reported to the corresponding management system, which can not only reduce the waste of resources caused by the repeated construction of meter reading channels, but also simplify the meter reading process, improve the meter reading efficiency and information transmission efficiency of multiple meters, reduce the cost of multi-meter meter reading, and avoid waste of resources.

[0050] Next, combine Figure 1 The specific implementation steps of the multi-meter centralized reading method provided in this embodiment are introduced in detail:

[0051] First, step S101 is executed to collect metering information of each meter among a plurality of meters.

[0052] Specifically, the smart meter collects the metering information reported by each meter through wireless communication technology. The metering information of each meter includes: metering information protocol type, meter address, target management system address, metering information control code, metering information data content and metering information checksum. The metering information protocol type is the protocol type adopted by the meter, such as the 645 protocol or 698 protocol adopted by the electric meter, the water meter protocol adopted by the water meter, and the gas meter protocol adopted by the gas meter. The target management system address is the address where the meter sends the metering information to the target management system, such as the gas meter sends its metering information to the gas meter management system, and the address of the gas meter management system is the target management system address of the metering information of the gas meter. The metering information control code is used to indicate the operation of the metering information, for example, the metering information control code indicates that the metering information is an operation of writing data, or an operation of reading data. The metering information data content is the data content under the operation of the metering information control code, for example, the metering information control code indicates that the metering information is an operation of writing data, and the data written is the metering information data content. These data items of the metering information of each meter constitute complete metering information.

[0053] In this embodiment, various types of meters no longer need to transmit data through cables or other physical channels. Wireless communication technology does not require wires for data transmission, and wireless technology has high communication security, and wireless signals are difficult to be eavesdropped or interfered with. Various types of meters mentioned in this embodiment can report metering information to smart meters through wireless communication technology, which not only reduces the waste of resources caused by repeated construction of meter reading channels, but also ensures the security of data transmission.

[0054] Next, step S102 is executed to convert the metering information of each meter into MQTT information of each meter based on the Internet of Things protocol MQTT.

[0055] Specifically, for the metering information of each meter, the metering information checksum is obtained. If the metering information checksum of the metering information can be parsed through the protocol corresponding to the metering information, it means that each data item of the metering information can be parsed through the corresponding protocol, then the metering information is converted into MQTT information, and the target management system address of the metering information is set to the target management system address of the MQTT information. For example, the electric meter uses the 645 protocol. If the parsed checksum corresponding to a metering information is the 645 protocol, the metering information can be parsed through the parsing method of the 645 protocol. Then the metering information contains the metering information protocol type, meter address, target management system address, metering information control code, metering information data content, etc. The metering information is converted into MQTT information, and the target management system address of the metering information is set to the target management system address of the MQTT information.

[0056] If each protocol of the smart meter fails to parse the checksum of the metering information, it means that the smart meter cannot parse the metering information, there is an error in the metering information or the metering information is received by mistake, and the metering information is discarded.

[0057] The metering information of each meter performs the above acquisition operation and conversion operation to obtain the target management system address of the MQTT information of each meter and the MQTT information of each meter.

[0058] The process of converting the metering information of the meter into the MQTT information of the meter is:

[0059] The metering information protocol type of the metering information is used as the topic name of the MQTT information. The metering information control code and the metering information data content of the metering information are used as the payload of the MQTT information. The metering table address of the metering information is used as the client identifier; according to the topic name, payload and client identifier of the MQTT information, the MQTT information is obtained.

[0060] It should be explained that MQTT information is an MQTT message, which includes a fixed header, a variable header and a payload connected in sequence. Figure 3 As shown in the figure, the fixed header is the unified format of each MQTT message. The variable header varies according to the message type in the fixed header. Each MQTT message type basically has its own variable header format. The payload represents the content of the MQTT message. Some MQTT messages have it, while some do not. Moreover, the message content also varies according to the message type. Figure 4 As shown in the figure, the fixed header is the beginning of the MQTT protocol, that is, the beginning of the MQTT message. The fixed header includes the flag bit, message type and remaining length. The remaining length indicates the length of the data after the fixed header. The flag bit and message type occupy 1 byte, and the remaining length is usually 1-4 bytes. Figure 4 As shown in the figure, the flag bit and the message type occupy the first byte of the fixed header, and the remaining length occupies the second byte of the fixed header. In the first byte of the fixed header, the first to fourth bits are the flag bit, and the fifth to eighth bits are the message type. In addition, the highest bit of each byte of the remaining length is a remaining length flag bit. The remaining length flag bit is used to indicate whether the next byte also belongs to the remaining length.

[0061] The data in the variable header varies depending on the message type in the fixed header, and generally contains data related to the message type. Each message type has a specific format. The payload content varies depending on the message type. For example, the message type of the fixed header of an MQTT message is the message type for connecting to the server, and the variable header of the MQTT message includes data items such as the protocol name and the length of the protocol name, the protocol level, the connection flag, and the connection maintenance. The payload of the MQTT message includes data items such as the client identifier, the survivor body, the survivor message, the user name, and the password. The specific description of the MQTT message type for connecting to the server is shown in Table 1.

[0062] Table 1

[0063]

[0064] The fixed header message type of a certain MQTT message is the message type of the published message, and the variable header of the MQTT message includes data items such as the topic name and the message identifier. The payload of the MQTT message includes data items such as the application message. The specific description of the MQTT message of the message type of the published message is shown in Table 2.

[0065] Table 2

[0066]

[0067] It should be noted that the MQTT information converted from the metering information of each meter is an MQTT message of the message type for publishing messages.

[0068] In this embodiment, the smart meter is based on the MQTT protocol, and converts the metering information reported by the meter into a message type supported by the MQTT protocol, namely, an MQTT message, so that the MQTT information can be directly reported to the management system of each meter. The management system can also request the MQTT information of each meter from the smart meter. Through the transmission of MQTT information, this method has high efficiency, reliability, low power consumption, scalability, security and real-time performance. The direct interaction of MQTT information not only simplifies the process, but also eliminates the need for each management system to request information from the power system, greatly improves the efficiency of information aggregation, and improves the meter reading efficiency and information transmission efficiency of multiple meters. In addition, the data information of various types of meters is uniformly collected and then reported to the corresponding management system, which can reduce the waste of resources caused by repeated construction of meter reading channels, reduce the cost of multi-meter meter reading, and avoid waste of resources.

[0069] Then, step S103 is executed to send the MQTT information of each meter to the management system corresponding to each meter through the gateway of the smart meter. The management system includes a proxy component of the MQTT protocol.

[0070] Specifically, after the metering information of each meter performs the above acquisition and conversion operations, the target management system address of the MQTT information of each meter and the MQTT information of each meter are obtained, and the MQTT information of each meter is transparently transmitted to the corresponding management system according to the target management system address of the MQTT information of each meter. In this way, the MQTT information is directly reported to the management system according to the IP address of the management system corresponding to each meter, which shortens the time of information reporting and improves the efficiency of information reporting.

[0071] In this implementation, when there is an intelligent gateway in the multi-meter centralized reading system, the MQTT information of each meter is sent to the intelligent gateway, so that the intelligent gateway transmits the MQTT information of each meter to the corresponding management system according to the target management system address of the MQTT information of each meter. Specifically, after receiving the MQTT information of each meter reported by the smart meter, the intelligent gateway parses and obtains the target management system address of the MQTT information of each meter. Then, the target management system address of the MQTT information of each meter is matched with the IP address of each management system to match the IP address of the corresponding management system. Then, according to the IP address of the corresponding management system, the MQTT information of each meter is reported to the corresponding management system through the transparent transmission technology (i.e., transparent transmission technology).

[0072] After receiving the MQTT information of the meter uploaded by the smart gateway or smart meter, the management system will verify the target management system address of the MQTT information of the meter. If the verification is passed, it means that the MQTT information of the meter is sent correctly, that is, its target management system address is correct, and the MQTT information of the meter is retained and processed. If the verification fails, it means that the MQTT information of the meter is sent incorrectly, that is, the target management system address is incorrect, and the MQTT information of the meter is discarded.

[0073] In this implementation, after the management system sends a message message. The smart meter obtains the message message of the management system; and parses the message message through the Internet of Things protocol MQTT to obtain the message message protocol type, management system address, target meter address, message message control code, and message message data content of the message message; then, according to the message message protocol type, the management system address, target meter address, message message control code, and message message data content are reassembled to obtain the device message; according to the target meter address, the device message is sent to the meter corresponding to the message message. The process principle of the smart meter transmitting the message message of the management system to each meter can refer to the process principle of transmitting the metering information of the meter to the corresponding management system.

[0074] Therefore, this embodiment is based on the Internet of Things protocol MQTT (Message Queuing Telemetry Transport) to transmit information between each meter and each management system, so that the information transmission process has high efficiency, reliability, low power consumption, scalability, security and real-time performance. In addition, the data information of each type of meter is uniformly collected and then reported to the corresponding management system, which can not only reduce the waste of resources caused by repeated construction of meter reading channels, but also simplify the meter reading process, improve the meter reading efficiency and information transmission efficiency of multiple meters, reduce the cost of multi-meter meter reading, and avoid resource waste. It is also possible to send message messages from each management system to each meter to improve the management efficiency of each meter.

[0075] Embodiment 2

[0076] Based on the same inventive concept, the second embodiment of the present invention also provides a multi-meter collection system, such as Figure 2 As shown, it includes: multiple management systems, smart meters and multiple meters; one end of the smart meter is connected to the multiple meters, and the other end is connected to the multiple management systems. The smart meter is used to execute the steps of the multi-meter centralized reading method as described in Example 1.

[0077] Embodiment 3

[0078] Based on the same inventive concept, the third embodiment of the present invention also provides a smart electric meter, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of any one of the above-mentioned multi-meter collective reading methods when executing the program.

[0079] Embodiment 4

[0080] Based on the same inventive concept, the fourth embodiment of the present invention further provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the steps of any method of the multi-meter centralized meter reading method described in the first embodiment above are implemented.

[0081] Those skilled in the art will appreciate that, although the preferred embodiments of the present invention have been described, those skilled in the art, once informed of the basic creative concept, may make additional changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0082] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A multi-meter centralized meter reading method, characterized in that: A smart electric meter applied to a multi-meter centralized meter reading system, the method comprising: Collecting metering information of each meter in a plurality of meters; Based on the Internet of Things protocol MQTT, the metering information of each meter is converted into the MQTT information of each meter; The MQTT information of each meter is sent to a management system corresponding to each meter through the gateway of the smart meter, and the management system includes a proxy component of the MQTT protocol.

2. The method according to claim 1, characterized in that The metering information of each meter includes: metering information protocol type, meter address, target management system address, metering information control code, metering information data content and metering information checksum; The method of converting the metering information of each meter into the MQTT information of each meter based on the Internet of Things protocol MQTT also includes: For the metering information of each meter, obtaining a metering information checksum of the metering information; If the metering information checksum of the metering information can be parsed through the protocol corresponding to the metering information, the metering information is converted into MQTT information, and the target management system address of the metering information is set to the target management system address of the MQTT information; The metering information of each meter performs the above-mentioned acquisition operation and conversion operation to obtain the target management system address of the MQTT information of each meter and the MQTT information of each meter.

3. The method according to claim 2, characterized in that The converting the metering information of the meter into the MQTT information of the meter includes: Using the metering information protocol type of the metering information as the topic name of the MQTT information; Using the metering information control code and metering information data content of the metering information as the payload of the MQTT information; Using the meter address of the metering information as the client identifier; The MQTT information is obtained according to the topic name, payload and client identifier of the MQTT information.

4. The method according to claim 2, characterized in that After obtaining the checksum of the metering information, it also includes: If each protocol of the smart meter fails to parse the checksum of the metering information, the metering information is discarded.

5. The method according to claim 2, characterized in that The sending of the MQTT information of each meter to the management system corresponding to each meter includes: According to the target management system address of the MQTT information of each meter, the MQTT information of each meter is transparently transmitted to the corresponding management system.

6. The method according to claim 1, characterized in that Also includes: Get the message message of the management system; Parse the message message through the Internet of Things protocol MQTT to obtain the message message protocol type, management system address, target meter address, message message control code, and message message data content of the message message; According to the message protocol type, reorganize the management system address, the target meter address, the message control code and the message data content to obtain a device message; According to the target meter address, the device message is sent to the meter corresponding to the message message.

7. The method according to claim 1, characterized in that Also includes: When there is an intelligent gateway in the multi-meter centralized meter reading system, the MQTT information of each meter is sent to the intelligent gateway, so that the intelligent gateway transmits the MQTT information of each meter to the corresponding management system according to the target management system address of the MQTT information of each meter.

8. A multi-meter centralized meter reading system, characterized in that: include: Multiple management systems, smart meters, and multiple meters; One end of the smart meter is connected to the multiple meters, and the other end is connected to the multiple management systems. The smart meter is used to execute the steps of the multi-meter centralized meter reading method as described in any one of claims 1 to 7.

9. A smart electric meter, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the steps of the multi-meter centralized meter reading method as described in any one of claims 1 to 7 are implemented.

10. A storage medium of a smart meter, wherein a program is stored on the storage medium, characterized in that: When the program is executed by a processor, the steps of the multi-meter centralized meter reading method as claimed in any one of claims 1 to 7 are implemented.

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