Method of meter reading and maintenance multiplexing of interface converter rs485 communication interface

A technology of interface converter and communication interface, which is applied in the direction of instruments, signal transmission systems, electrical signal transmission systems, etc., can solve the problems of reducing the efficiency of on-site construction, and achieve the effect of reducing human intervention, reducing quantity, and increasing construction efficiency

Active Publication Date: 2018-10-16
INTEGRATED ELECTRONICS SYST LAB
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Problems solved by technology

In order to achieve the purpose of expanding the number of load-bearing nodes for meter reading, but this method requires on-site construction personnel to carry additional equipment and configure them one by one, which greatly reduces the efficiency of on-site construction

Method used

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  • Method of meter reading and maintenance multiplexing of interface converter rs485 communication interface

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Embodiment Construction

[0021] Interface converter RS485 communication interface meter reading and maintenance multiplexing method, such as figure 1 shown, including the following steps:

[0022] Step 1. Determine the current state of the RS485 communication interface. According to the function, it is divided into idle state, maintenance state and meter reading state. If it is in the maintenance state, enter step 4. If it is in the maintenance state at this time, the current RS-485 communication interface is considered It is still in the interactive state of passive reception and does not have the ability to actively initiate communication for the time being. It needs to wait for the end of the maintenance state; otherwise, go to step 2; the current state of the RS485 communication interface is judged as follows: If the initiator of this communication is the converter itself, It is considered that the current RS485 communication interface is in the meter reading state; if the initiator of this commun...

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Abstract

The invention relates to a method for multiplexing the meter reading and maintenance functions of an RS485 (Recommended Standard 485) communication interface for an interface converter. Through the automatic switching function of the meter reading / maintenance functions of an RS-485 channel, the human intervention is reduced; the simple type of field construction is improved; the construction efficiency is increased; through channel multiplexing, a meter reading channel is more added; the loading quantity of the converter is increased; the quantity of the converters is reduced; not only is the difficult problem that a meter mounting site is not suitable to seek when mounting positions in a construction field are short solved, but also the construction cost is decreased at the same time.

Description

technical field [0001] The invention relates to the technical field of electricity consumption information collection systems, in particular to a method for multiplexing the meter reading and maintenance functions of the RS485 communication interface of the interface converter in the "four meters in one" project. Background technique [0002] With the continuous advancement of the electricity information collection system in the power system for the integrated collection of water, electricity, heating, gas and other public utility data (referred to as the "four meters in one" project), the interface converter (hereinafter referred to as "converter" ) is increasingly used in centralized copying systems. During on-site construction and installation, if the number of residents in the old residential area is relatively large, the installation position of the converter will be relatively tight. This requires the meter reading communication interface of the converter to have a str...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08C19/00
CPCG08C19/00
Inventor 衡泽超宁晨光宋忠强郑宝毅刘亮贾凯薛坤赵长收王福斌王春城
Owner INTEGRATED ELECTRONICS SYST LAB
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