Linbus Advantages Disadvantages Download Citation Copy
Linbus Advantages Disadvantages Software Algorithm Or

High-level GW control algorithm Figures - uploaded by Rinki Sharma Author content All figure content in this area was uploaded by Rinki Sharma Content may be subject to copyright.

Rinki Sharma M. S.

Linbus Advantages Disadvantages Download Citation Copy

Download full-text PDF Read full-text Download full-text PDF Read full-text Download citation Copy link Link copied Read full-text Download citation Copy link Link copied References (7) Figures (5) Abstract and Figures In last few decades, the rising numbers of sensors, actuators and ECUs have increased the complexity of automotive network.

Moreover, multiple network communication protocols such as CAN, LIN, FlexRay, MOST are used in todays cars to meet the various requirements of in-vehicle applications.

While CAN is the traditional automotive field-bus used in engine management, LIN provides a low-cost network solution for car window and door applications.

In many instances data has to be shared between various networks using different protocols.

Network gateway(GW) enables this data exchange with optimum utilization of the available data signals.

Typically over 25-45 ECUs connected in a vehicle with two to four different network protocols exchange approximately 100-300 signals and data 1,2.

An error free data transfer from one protocol to another through GW ECU is a challenging and critical task.

Failure or error in data exchange can lead to safety problems or inconvenience to the passenger.

Linbus Advantages Disadvantages Software Algorithm Or

GW failure may happen due to failure in software algorithm or hardware.

In this paper, a fault tolerant GW proposed to tackle failure in hardware.

Design configuration depends on number of controllers, transceivers used, criticality of subsystem and software algorithm implemented.

Basic configurations are proposed highlighting the advantages and disadvantages.

Out of five basic configurations proposed, penta configuration fault tolerant CAN-LIN GW design is developed with limited features using PIC18F4580, MCP2551 and TPIC1021 and its feasibility tested under lab environment.

Experimental and simulation results are presented and discussed.

Conventional vs. FT GW 2.

A FT GW should work even in case of software or hardware failure.

Design configuration of FT GW depends on number of controllers and transceivers per controller used and number of paths and software algorithm implemented.

Basic design configuration of FT GW Block diagram of Penta controller design 5.

Penta Controller GW: Such a design will provide two network paths.

Four ECUs with single protocol transceiver are connected with main ECUs.

Separate software algorithm can be implemented for each protocol ECU.

Design and implementation of diagnostic features will be easy since it will be controlled by main ECU.

Software architecture A top-level flowchart implemented in main controller showing algorithm for message flow and selection of GW control path is shown in Figure 5.