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Single-bus communication method

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

Active Publication Date: 2018-09-28
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. A physical layer uses 4 bit data as a transmission unit to encode to-be-transmitted data, and a code value of the transmission unit is represented by a high-level time length. The single-bus communication method disclosed by the invention is simple in implementation and low in cost, no special physical layer chip is needed, and a DC component on a signal line is very high, so that a power can be supplied to a passive device.

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 Applications(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