LIN Master Identical Slave Segmented Data Lines

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

In LIN data bus systems, identical slaves require individual identifiers for data communication, leading to complex interconnection and increased service involvement, as well as higher bus load, especially when multiple identical devices like generators are connected.

Innovation Solution

Identical LIN slaves are connected to the LIN master via separate data lines, eliminating the need for individual identifiers and allowing bidirectional communication without additional wiring or training processes, thereby reducing bus load and service involvement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If individual identifiers are assigned to identical LIN slaves in a common LIN data bus system, then data communication between master and slaves is enabled, but device complexity and service involvement increase

Engineering Contradiction:

Improvedata communication capabilityVSAvoidinterconnection complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent divides the single common LIN data bus into multiple separate data lines, with each identical LIN slave connected to the master via its own dedicated data line. This segmentation eliminates the need for identifier-based addressing and individualization measures, thereby reducing interconnection complexity while maintaining reliable data communication.

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If individual identifiers are assigned to identical LIN slaves, then data can be routed to specific slaves, but manufacturing complexity and service involvement increase

Engineering Contradiction:

Improveslave identification capabilityVSAvoidproduction simplicity

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

By segmenting the communication medium into separate dedicated data lines for each slave, the system eliminates the need for complex identification and individualization processes during manufacturing. Each slave receives communication data via its own direct connection, simplifying production while maintaining the ability to address specific slaves.

Inventive Principle:

Principle #1Segmentation

3Adaptability or versatility

If multiple identical LIN slaves communicate via a common LIN data bus, then network connectivity is maintained, but bus load increases reducing communication frequency

Engineering Contradiction:

Improvenetwork connectivityVSAvoidcommunication frequency

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The patent segments the shared bus into multiple dedicated data lines, allowing each slave to communicate with the master independently. This eliminates bus contention and reduces overall bus load, enabling more frequent and higher-frequency communication between the master and each individual slave while maintaining full network connectivity.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS9798687B2Method and device for LIN master and identical LIN slaves data communication in motor vehicles

Publication Date: 2017.10.24 MAN TRUCK & BUS SE

AI summary

A method for data communication in a serial LIN bus system that is used to transmit LIN information between a LIN master and LIN slaves includes transmitting the LIN information between the LIN master and the identical LIN slaves via respective data line that run between each of the identical LIN slaves and the LIN master.