Vehicle HMI Indicator Verification Across Diverse Display Configurations
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Solution Overview
Problem
The complexity of vehicle human-machine interfaces (HMIs) complicates safety level compliance testing, leading to high costs and risks of error due to the diverse configurations across different vehicle models.
Innovation Solution
A method and device for controlling HMI indicators involve a computer receiving vehicle and indicator information, generating a video stream, and comparing it with reference data to ensure compliance with safety levels like ASIL A, using a low-cost dedicated computer monitored by a qualified computer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional testing methods are used for diverse HMI configurations, then testing coverage can be achieved, but testing costs increase and error risks increase
Solution Approach 1:
The patent creates a universal testing device capable of handling multiple HMI configurations through a database storing reference images for different vehicle models and HMI types. The device can adapt to various configurations without requiring separate dedicated testing systems for each, thus reducing overall complexity while maintaining comprehensive safety validation across diverse HMI implementations
Solution Approach 2:
The patent uses reference images (copies of expected correct displays) stored in a database to compare against actual HMI outputs. This copying approach allows the testing device to validate safety indicator displays across different HMI configurations by comparing against pre-established reference standards, enabling reliable safety verification without recreating test scenarios for each configuration
2Reliability
If comprehensive testing of all HMI configurations is performed, then safety compliance is ensured, but testing time and costs increase
Solution Approach 1:
The patent performs preliminary actions by pre-storing reference images for various HMI configurations in a database before actual testing occurs. This preparation allows the testing device to quickly retrieve and compare against the correct display standards without having to generate or analyze reference materials during the testing process itself, significantly reducing testing time while maintaining comprehensive safety validation
Solution Approach 2:
By using pre-captured reference images as copies of expected correct displays, the system enables rapid comparison testing. The copying approach eliminates the need for time-consuming manual verification or complex analysis during testing, as the device can directly compare actual HMI outputs against stored reference standards across multiple configurations simultaneously
Data Source
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AI summary
The invention relates to a method and a device for controlling indicators (10, 11, 12) of a human-machine interface (1), referred to as an HMI, to be displayed on at least one screen of a vehicle. A request comprising a first item of information at least partially identifying the vehicle and a second item of information identifying the indicators to be controlled is received by a device. The first item of information and the second item of information are used by the device to identify, in a memory, a particular configuration for displaying the indicators. This configuration is sent to a computer that generates data of a video stream comprising the portion of the HMI (1) comprising the indicators in accordance with the received configuration to display the HMI. These data are associated with an item of control information that is sent to the device, which compares this item of control information with an item of reference control information in order to determine whether the indicators are properly displayed.