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Multi-master communication method based on two-wire bus

A communication method and multi-host technology, applied in bus network, data exchange through path configuration, digital transmission system, etc., can solve the problems of not supporting many-to-many communication, restricting the industrial application of two-wire bus, etc., to achieve convenient implementation Effect

Active Publication Date: 2020-09-29
长沙玄米电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when the existing two-wire bus is applied, it only supports the master-slave mode of one-to-many communication, but does not support many-to-many communication, thus greatly limiting the industrial application of many two-wire bus

Method used

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  • Multi-master communication method based on two-wire bus
  • Multi-master communication method based on two-wire bus
  • Multi-master communication method based on two-wire bus

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Embodiment Construction

[0061] Such as figure 1 Shown is a schematic diagram of the bus structure of the method of the present invention. The communication method of the present invention can be realized by using the communication hardware described in the patent application 201620933082.X. The bus structure is then figure 1 As shown (schematic diagram): i slave stations (slave station 1~slave station i) and a repeater 1 are directly connected under the master station, and slave stations i+1~slave station are directly connected under repeater 1 Station j is also connected to repeater 2; it goes back and forth until the last repeater n, and slave station k~slave n connected under repeater n.

[0062] Such as figure 2 Shown is the flow chart of the steps of the master station sending data in the method of the present invention: the steps of the master station sending data, specifically, the following steps are used to complete the sending of the master station data:

[0063] A. The master station ...

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Abstract

The invention discloses a multi-host communication method based on a two-wire system bus. The method comprises: a step of issuing data by a master station for issuing data to a slave station by the master station; a step of uploading data by the slave station without broadcast for uploading the data to the master station by the slave station; a step of uploading data by the slave station through full-line broadcast for sending data to all slave stations and the master station by the slave station; and a step of uploading data by the slave station within a limited range for sending the data tothe master station and a slave station connected with the slave station within the same relay by the slave station. According to the multi-host communication method, by means of the existing two-bus mode and the innovative communication method, the multi-host communication mode is achieved, and the full-line broadcast and limited range data sending of the slave station are achieved as well; and inaddition, the communication method disclosed by the invention is simple and reliable and is convenient to implement.

Description

technical field [0001] The invention specifically relates to a multi-master communication method based on a two-wire bus. Background technique [0002] With the development of the country's economy and technology and the improvement of people's living standards, a large number of industrial buses have been used for communication. Bus communication, because of its simple and reliable communication hardware, and strong anti-interference ability, is widely used in various industrial occasions. [0003] In current bus applications, the two-wire bus occupies a large proportion. The two-bus communication method has been widely used in power grid monitoring, fire protection electronic equipment, and energy management. The two-wire bus not only has the advantages of strong anti-interference ability of other bus communication, simple and reliable hardware, etc., but also has the advantage that only two wires are needed to complete the communication between the master and slave devi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/40
CPCH04L12/40006H04L12/40163
Inventor 刘兵肖郭璇胡久松李洋唐彪
Owner 长沙玄米电子科技有限公司
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