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Technical Paper

Automated Tests for automotive Instrument Panel cluster Based on Machine Vision

2016-10-25
2016-36-0235
This paper approaches the use of machine vision as an automation tool for verification tests in automotive Instrument Panel Cluster (IPC). A computer integrated with PXI modular instruments, machine vision software and Integrated Development Environment (IDE) composes the test system. The IPC is verified in closed-loop using the Hardware-in-the-Loop (HiL) technique in which the HiL system simulates all Electronic Control Units (ECUs) that interact with the IPC. Every simulated ECUs signals are sent to the IPC over CAN (Controller Area Network) bus or hardwired I/O using PXI modules integrated with IDE and its responses are captured by cameras. Using machine vision such images are subjected to Digital Image Processing (DIP) techniques as pattern matching, edge detection and Optical Character Recognition (OCR), which can be applied to interpret speedometer, tachometer, fuel gauges, display and warning lights.
Technical Paper

Hardware-in-the-Loop alternative approach for an ESP verification

2022-02-04
2021-36-0066
With the number and complexity increase of electronic control units (ECUs) within the automotive industry, the tests requirement’s stringency also tends to increase, regarding safety, performance and quality, which in turn lead to greater costs and time required to implement and execute these tests. This work presents an integrated and automated workflow to setup, execute, monitor and evaluate a stress test for an electronic stability program (ESP) module, that may also be applied to other ECUs with minor changes. The proposed method consists on the repeated reproduction of several controller area network (CAN) logs, collected from a prototype, production vehicle or even a virtual automobile, into a real-time bench mounted system, that contains the targeted ECU and peripherals components. A Hardware-in-the-Loop (HiL) approach is used to reproduce physical sensors and CAN inputs to the ECU.
Technical Paper

Automation of seatbelt reminder function test using hardware-in-the-loop simulator

2018-09-03
2018-36-0057
This paper approaches the use of Hardware-in-the-Loop (HiL) test framework to perform automated verification test of Seatbelt Reminder Function in automotive Instrument Panel Cluster (IPC). The goal of this test was to verify if the Belt-Minder™ Feature performs its seatbelt warning function sounding a chime and illuminating a warning light when the user has his seatbelt unbuckled in compliance with safety standards and regulations. The manual execution of this test requires many resources like prototype vehicle, fuel, many engineers' work hours for each test, etc. However, testing dynamically with HiL system some of those mentioned resources are not required like the prototype vehicle and other are reduced, for example, the time taken to have report on hands. The most important among the advantages, was the possibility of testing with HiL earlier in the V-Diagram.
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