Embedded System Dysfunction Analysis Using Unified Resource Model
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Solution Overview
Problem
The analysis of embedded system dysfunctions across different domains, such as diagnostic, operating safety, and safety analysis, requires cumbersome adaptations and specific modeling for each domain, making it difficult to analyze dysfunctions efficiently.
Innovation Solution
A method that includes a modeling phase defining resources, services, and statuses, and an analysis phase configuring basic events and determining conditions for dysfunction analysis, using algorithms for calculating minimum cuts and probability assessments, allowing for domain-independent analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If model-based reasoning techniques are used for dysfunction analysis in different domains, then analysis precision is improved, but device complexity increases due to requiring specific models for each domain
Solution Approach 1:
The patent applies universality by creating a single unified model that serves multiple analysis domains (diagnostic, operating safety, safety, and operating warning analysis). Instead of building separate models for each domain, the invention defines a comprehensive model structure with resources, services, statuses, and acquisition rules that can be used across all domains, thereby reducing overall system complexity while maintaining analysis precision
Solution Approach 2:
The patent segments the dysfunction analysis problem into distinct analysis domains (diagnostic, operating safety, safety, and operating warning) that can be addressed using the same unified model. This segmentation allows each domain to be analyzed independently with precise results while avoiding the need for separate models for each domain
2Reliability
If specific models are built for each analysis domain, then analysis reliability is improved, but ease of operation deteriorates due to cumbersome adaptations
Solution Approach 1:
The unified model structure with resources, services, statuses, and acquisition rules provides a universal framework that maintains analysis reliability across all domains while eliminating the need for cumbersome adaptations. The same model can be used for diagnostic analysis, operating safety analysis, safety analysis, and operating warning analysis without requiring separate model building efforts
Data Source
AI summary
A method for analyzing dysfunctions of an embedded system including a phase for modeling this system and an analysis phase, the modeling phase including defining a set of resources, a set of services, a set of statuses and at least one rule for the acquisition of a status by a resource or by a service, the analysis phase including configuring the analysis including marking a marked event and analyzing acquisition rules to determine a set of basic events and conditions for the appearance thereof, leading to the appearance of the marked basic event.