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A single bus communication method

A communication method and single-bus technology, applied in the direction of bus network, data exchange through path configuration, digital transmission system, etc., can solve the problems of signal line supply, high cost, need special chip, etc., to achieve the effect of reliable data communication

Active Publication Date: 2021-07-02
武汉虹创联众科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems of complex use, high cost, special chip and inability to provide power through signal lines in the existing single bus, the present invention provides a master-slave half-duplex communication method while supplying power on the single bus

Method used

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Embodiment Construction

[0033] Such as figure 1 As shown in the signal timing diagram, the data types are divided into: start character 0, start character 1, start character 2, transmission unit, stop character, delimiter. in:

[0034] The start character 0 is low level, and the time length is T start0 ;

[0035] The start symbol 1 is high level, and the time length is T start1 ;

[0036] The start symbol 2 is high level, and the time length is T start2 ;

[0037] The transmission unit is high level, and the time length is (transmission unit code value+1)×T p ;

[0038] The stop character is high level, and the time length is T stop ,T stop for T p Integer multiple;

[0039] The delimiter is low level, and the time length is T int .

[0040] The present invention uses 4bit data as a transmission unit to encode the data to be transmitted, and uses the time length of high level to represent the code value of the transmission unit. Assume that the minimum unit time length of the high level...

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Abstract

The invention discloses a single bus communication method. The physical layer of the present invention uses 4bit data as a transmission unit to encode the data to be transmitted, and the time length of the high level represents the code value of the transmission unit. The invention is easy to implement, low in cost, does not need a special physical layer chip, and has a high DC component on the signal line, and can supply power to passive devices.

Description

technical field [0001] The invention relates to a communication method, in particular to a single bus communication method. Background technique [0002] In some communication systems that need to save signal line resources, the number of signal lines must be reduced as much as possible, and single-bus communication is a better solution. That is, the connection of two devices is through a signal wire and a ground wire, and in many communication applications, it is necessary to provide power through the signal wire. However, the common One Wire bus is not suitable for supplying power through signal lines, and the One Wire bus needs a special chip to support its physical layer protocol, and the implementation cost is relatively high. [0003] For this reason, a single-bus approach to provide power and communication over signal lines is required. Contents of the invention [0004] In order to overcome the problems of complex use of the existing single bus, high cost, need f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/40
CPCH04L12/40045
Inventor 谭庆弟罗巍余华军
Owner 武汉虹创联众科技有限公司
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