Automated fault diagnostics testing for automotive electronic control units deploying hardware-in-the-loop

2010 ◽  
Author(s):  
A. Mouzakitis ◽  
A. Nayak ◽  
S. Puthiyapurayil
Keyword(s):  
Hardware In The Loop ◽  
Electronic Control ◽  
Fault Diagnostics ◽  
Automotive Electronic ◽  
Control Units

scholarly journals Collecting Big Data from Automotive ECUs beyond the CAN Bandwidth for Fault Visualization

2017 ◽  
Vol 2017 ◽  
pp. 1-13 ◽  
Author(s):  
Jeong-Woo Lee ◽  
Ki-Yong Choi ◽  
Jung-Won Lee
Keyword(s):  
Big Data ◽  
Controller Area Network ◽  
Area Network ◽  
Cumulative Number ◽  
Hardware In The Loop ◽  
Electronic Control ◽  
Automotive Electronic ◽  
Control Units ◽  
Multiple Regions

A hardware-in-the-loop (HiL) test is performed to verify the software functions mounted on automotive electronic control units (ECUs). However, the characteristics of HiL test limit the usage of common debugging techniques. Meanwhile, the logs of how the program uses memory can be utilized as debugging information collected by the controller area network (CAN). However, when the 32 KB memory is observed with 10 ms period, about 96% of the data on each cycle is lost, since the CAN only can transfer 1.25 KB of data at each cycle. Therefore, to overcome the above limitations, in this study, the memory is divided into multiple regions to transmit generated data via CAN. Next, the simulation is repeated for the each divided regions to obtain the different areas in each simulation. The collected data can be visualized as update information in each cycle and the cumulative number of updates. Through the proposed method, the ECU memory information during the HiL test was successfully collected using the CAN; the transmission is completed without any loss of data. In addition, the data was visualized in images containing the update information of the memory. These images contribute to shortening the debugging time for developers and testers.

scholarly journals Hardware-in-the-Loop System for Testing Automotive Ecu Diagnostic Software

2009 ◽  
Vol 42 (8) ◽  
pp. 238-245 ◽  
Author(s):  
Alexandros Mouzakitis ◽  
David Copp ◽  
Richard Parker ◽  
Keith Burnham
Keyword(s):  
Significant Proportion ◽  
Embedded Software ◽  
Automated Testing ◽  
Hardware In The Loop ◽  
Electronic Control ◽  
Validation Process ◽  
Automotive Electronic ◽  
Control Units ◽  
Land Rover ◽  
Diagnostic Software

The purpose of this paper is to present an approach to testing ECU diagnostic software using hardware-in-the-loop (HIL) systems at Jaguar Land Rover (JLR). The increasing complexity of embedded software for automotive electronic control units (ECUs) requires a convenient and flexible environment for system testing. On-board diagnostic software represents a significant proportion of ECU software and consequently, the effort, in terms of time and manpower required to determine the validity of ECU software is becoming excessive. The process for validating on-board diagnostic software is traditionally achieved using tests carried out with actual vehicles. Some tests are difficult and expensive to perform in vehicles. Automated testing offers an approach that can improve the validation process whilst providing the potential for cost saves. Since JLR utilises ECUs from different suppliers, the development of a generic approach to automated testing is vital.

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