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Data transmission method for communication of intelligent electric meters

A data transmission method and smart meter technology, which is applied in the communication field of smart meters, can solve the problems of not considering the security of data transmission, and the data is easy to be eavesdropped and tampered with, so as to achieve the effect of ensuring traceability, preventing eavesdropping and tampering

Active Publication Date: 2013-01-30
HEXING ELECTRICAL
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Problems solved by technology

However, at present, most of the communications of domestic electric energy meters do not consider the security of data transmission. The data is easily eavesdropped and tampered with during transmission. Hackers can use the eavesdropped data to perform certain operations of great interest, such as switching on and off, and even energy consumers can deny it. the data it consumes

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  • Data transmission method for communication of intelligent electric meters
  • Data transmission method for communication of intelligent electric meters
  • Data transmission method for communication of intelligent electric meters

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Embodiment Construction

[0029] In practical applications, a client generally corresponds to multiple meters, and the identity information (8 bytes) of the client is unique to ensure the traceability of the commands sent by the client; and the identity information (8 bytes) of each meter under the client ) is also unique to ensure the traceability of the meter reply data; at the same time, the client stores the identity information of multiple legal meters corresponding to it, and each meter stores the identity information of the corresponding legal client. In addition, the encryption key of each meter is also unique. Correspondingly, multiple keys are stored in the client corresponding to this group of meters, which correspond to each meter respectively, so as to facilitate encryption and encryption during communication. decrypt.

[0030] The following takes the communication between the client and one of the meters as an example to illustrate, such as Figure 1-Figure 5 As shown, the specific steps...

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Abstract

The invention relates to a data transmission method for communication of intelligent electric meters, and aims to guarantee the safety of data transmission during communication of the meters. According to the technical scheme, the data transmission method comprises the following steps that: (a) a client-side encrypts a command to be sent and then transmits the command to a meter; (b) the meter judges whether a frame number is the same as a frame number stored in the meter, and a (c) step is carried out if the frame number is the same as the frame number stored in the meter; (c) a media access control (MAC) value is tested and verified, and a (d) step is carried out if the MAC value is correct; (d) the meter decrypts the command to obtain a plaintext command, the plaintext command is carried out, and 1 is added to the frame number stored in the meter; (e) the client-side judges whether the frame number is equal to the frame number when the command is transmitted after the client-side receives ciphertext replied data of the meter, and a (f) step is carried out if the frame number is equal to the frame number when the command is transmitted; (f) the MAC value is tested and verified, and a (g) step is carried out if the MAC value is correct; (g) the client-side decrypts the replied data to obtain plaintext replied data, and the plaintext replied data are stored; and (h) the client-side adds 1 to the frame number and the (a) step is carried out again. The initialization vector of an encryption algorithm comprises the identity information and the frame number of a sender. The data transmission method is applicable to communication of the intelligent electric meters.

Description

technical field [0001] The invention relates to a data transmission method for intelligent electric meter communication, which is mainly applicable to the communication of intelligent electric energy meters. Background technique [0002] With the introduction of the smart meter concept, the security of information transmission has become a key factor in the communication of smart meters around the world. The State Grid Corporation of China and China Southern Power Grid Corporation are also considering the security of information transmission as a smart meter when formulating smart meter standards. One of the meter requirements. However, at present, most of the communications of domestic electric energy meters do not consider the security of data transmission. The data is easily eavesdropped and tampered with during transmission. Hackers can use the eavesdropped data to perform certain operations of great interest, such as switching on and off, and even energy consumers can d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08C19/00H04L9/32
Inventor 周良璋姚青刘鹏
Owner HEXING ELECTRICAL
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