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Intelligent electric meter and intelligent electric meter system

A technology of smart meters and communication circuits, applied in transmission systems, signal transmission systems, electrical components, etc., can solve problems such as work to be completed, and achieve the effect of ensuring communication security

Inactive Publication Date: 2019-05-28
SHENZHEN KAIFA TECH (CHENGDU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although security issues have become a widespread concern in recent years, there is still a lot of work to be done, especially for "endpoint" protection, such as: data communication between smart meters and smart meter reading systems

Method used

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  • Intelligent electric meter and intelligent electric meter system
  • Intelligent electric meter and intelligent electric meter system
  • Intelligent electric meter and intelligent electric meter system

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Experimental program
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Embodiment Construction

[0013] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings of this specification.

[0014] see figure 1 , figure 1 It is a schematic diagram of the protocol model of the smart meter of the present invention. The invention proposes an intelligent electric meter, which includes hardware structures such as a processor, a memory, and an RS485 communication circuit. In a system including such a smart meter, such as a meter reading system composed of several smart meters and meter reading devices, in order to realize secure communication between the smart meter and the meter reading device, the processor on the smart meter runs The program adopts a reference model similar to OSI (Open System Interconnect, that is, Open System Interconnection), with clear layers and modular design for each layer. Specifically, it consists of four layers of program modules from top to bottom: application layer 101 , security t...

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PUM

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Abstract

The invention provides an intelligent electric meter and an intelligent electric meter system. The intelligent electric meter comprises a processor and an RS485 communication circuit. Programs runningon the processor are composed of four layers of program modules from top to bottom in sequence: an application layer, a secure transmission protocol layer, a high-level data link control procedure layer and an RS485 physical layer. Wherein when a certain layer receives data from the lower layer, the data cannot be directly sent to the upper layer, buffering is carried out, then a reading interface is provided for the certain layer to be directly called by the upper layer to read the corresponding data, meanwhile, a writing interface is provided, and when the certain layer directly needs to send the data, the data can be directly called. Communication security can be ensured.

Description

technical field [0001] The present invention relates to a smart electric meter, in particular to a smart electric meter capable of safe communication. Background technique [0002] With the rapid development of the smart grid, while the smart grid brings great convenience to people's work and life, due to the openness and inclusiveness of the smart grid, it inevitably has hidden dangers in information security. If the smart grid is out of control, it will cause significant loss of information and economy. [0003] Smart meters are being deployed all over the world, and how to ensure the safety of these devices has become an important issue. Although security issues have become a widespread concern in recent years, there is still a lot of work to be done, especially for "endpoint" protection, such as: data communication between smart meters and smart meter reading systems. [0004] TLS (Transport Layer Security) is used to provide confidentiality and data integrity between ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L29/08G08C17/02
Inventor 丁川张广双
Owner SHENZHEN KAIFA TECH (CHENGDU) CO LTD