Vehicle Infotainment Module Testing for Fault Isolation
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Solution Overview
Problem
Conventional methods for testing vehicle infotainment systems can only detect if an error occurs but cannot identify which specific module within the system is faulty, limiting diagnostic precision.
Innovation Solution
A vehicle infotainment test device and method that includes a test case for each module, a test agent for managing input and output data, and a controller to apply these test cases to each module, allowing for the identification of faulty modules by comparing output data with reference data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional testing methods are used to detect errors in the vehicle infotainment system, then error detection capability is provided, but the ability to identify which specific module is faulty is lost
Solution Approach 1:
The patent segments the testing process by assigning dedicated test cases to each specific module (audio module, video module, navigation module, etc.). The controller executes module-specific test cases that target individual modules, allowing precise identification of which module contains the error. This segmentation transforms a general error detection system into a module-specific diagnostic system.
2Measurement precision
If module-specific test cases are implemented to identify faulty modules, then diagnostic precision is improved, but system complexity increases
Solution Approach 1:
The patent implements a universal test agent that can execute multiple different test cases across various modules through a standardized interface. The test agent serves multiple functions: it manages test case execution, collects output data from different modules, and communicates with the controller using a unified protocol. This multi-functionality reduces overall system complexity despite the presence of numerous module-specific test cases.
Solution Approach 2:
The test agent acts as an intermediary between the controller and the various modules. It receives test cases from the controller, executes them in the appropriate modules, and returns results to the controller. This intermediary layer simplifies the system architecture by providing a standardized communication interface, eliminating the need for the controller to directly manage complex module-specific protocols.
3Measurement precision
If comprehensive test cases for each module are executed, then diagnostic accuracy is improved, but testing time increases
Solution Approach 1:
The patent implements preliminary error detection by executing test cases that can quickly identify obvious module failures before more comprehensive testing is performed. The test agent and controller are configured to run essential diagnostic checks that provide rapid feedback on module status, allowing early identification of faulty modules without requiring execution of all possible test cases.
Data Source
AI summary
Disclosed are a vehicle infotainment test device and a method thereof. The vehicle infotainment test device includes: a storage that stores a test case for each module constituting a vehicle infotainment system, a test agent that manages input data and output data of each module, and a controller that applies the test case to each module by interworking with the test agent, and verifies the output data of each module received from the test agent based on the test case for each module.