Vehicle OTA Failure Phase Identification for ECU Update Recovery
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Solution Overview
Problem
The complexity of entire vehicle over-the-air (OTA) update procedures leads to potential update failures, which can affect user experience and are exacerbated by the varying impacts of electronic control unit (ECU) failures, necessitating accurate identification and evaluation of failure causes and impacts.
Innovation Solution
A method and apparatus to determine the procedure phase and type of OTA failure, considering faulty components and error codes, to formulate precise processing strategies, and provide user notifications and server-based suggestions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If entire vehicle OTA update procedure is implemented, then software installation and update functions are completed, but update failure may occur affecting user experience
Solution Approach 1:
The patent segments the OTA update procedure into multiple distinct phases (download phase, installation phase, activation phase, etc.) and identifies specific failure types for each phase. This segmentation allows for precise identification of where failures occur and enables targeted processing strategies for each phase, resolving the contradiction by making the complex procedure manageable and failure-prone areas identifiable.
Solution Approach 2:
The patent implements a feedback mechanism where the system monitors the OTA update process, detects failures, identifies their causes, and provides processing strategies. The server receives failure information from the vehicle terminal and sends back corresponding processing strategies, creating a closed-loop feedback system that improves reliability by learning from and responding to failures.
2Measurement precision
If multiple ECU update failures are considered, then different impact evaluations are needed, but accurate identification of failure causes becomes more difficult
Solution Approach 1:
The patent segments the ECU system into multiple update phases and failure types, allowing precise identification of which specific ECU failed and at what stage. By categorizing failures into distinct types (download failure, installation failure, activation failure) associated with specific phases, the system can accurately identify causes despite the complexity of multiple ECUs.
Solution Approach 2:
The patent applies local quality by providing different evaluation criteria and processing strategies for different ECUs based on their specific failure contexts. Each ECU failure is evaluated according to its phase, failure type, and impact level, allowing customized precision for each component rather than a one-size-fits-all approach.
3Reliability
If OTA update failure impact evaluation is performed, then user experience can be protected, but response time may be increased
Solution Approach 1:
The patent performs preliminary action by pre-defining multiple failure types and their corresponding processing strategies before failures occur. The system has a library of predetermined responses for different failure scenarios, allowing immediate retrieval and application of appropriate strategies when failures are detected, thus protecting reliability without significantly increasing response time.
Solution Approach 2:
The patent implements rapid feedback by immediately detecting failures, evaluating their impact, and returning processing strategies to the vehicle terminal without delay. This real-time feedback loop ensures that reliability is maintained through quick response while minimizing time loss through automated rather than manual evaluation processes.
Data Source
AI summary
A processing method includes determining a first procedure phase in which a failure occurs in an over-the-air (OTA) technology update process; determining a first failure type from a plurality of OTA failure types based on the first procedure phase; and determining at least one processing strategy based on the first failure type.