ECU Function Allocation Optimization via Wiring Harness Evaluation
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Solution Overview
Problem
Existing ECU design methods require pre-allocation of functions, which limits the optimization of wiring harness design, as the allocation of functions to ECUs significantly affects the design, preventing the achievement of optimal results.
Innovation Solution
An ECU evaluation apparatus with a function allocation section, component part selection section, evaluation amount calculation section, and evaluation section, implemented by a computer program, to facilitate the allocation of functions to ECUs based on priority aspects such as cost, weight, and size, allowing for the selection of optimal component parts and evaluation of different allocation patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If function allocation is performed before wiring harness design, then the design process can proceed, but the wiring harness design cannot achieve optimal results
Solution Approach 1:
The patent applies preliminary action by performing wiring harness design evaluation before finalizing function allocation to ECUs. The system calculates wiring harness costs and weights for multiple function allocation patterns in advance, allowing designers to select optimal allocation patterns based on evaluated results, thus achieving both design efficiency and optimization.
Solution Approach 2:
The patent implements feedback by using the calculated wiring harness evaluation results (cost, weight) to inform and improve subsequent function allocation decisions. The system provides feedback loops where allocation patterns are evaluated, results are analyzed, and allocation patterns are refined based on the feedback to achieve optimal designs.
2Manufacturing precision
If multiple function allocation patterns are evaluated, then optimal allocation can be achieved, but the evaluation complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the evaluation process into distinct modules: function allocation pattern generation, component part selection based on allocation patterns, wiring harness design calculation, and evaluation result aggregation. This modular segmentation manages complexity while enabling comprehensive multi-pattern evaluation.
Solution Approach 2:
The patent implements universality by creating a multi-functional evaluation system that can handle multiple function allocation patterns simultaneously, evaluate different wiring harness configurations, and assess various component part selections through a unified evaluation framework, reducing overall system complexity.
3Ease of manufacture
If component parts are selected based on pre-existing ECU allocation, then the selection process is simplified, but the overall vehicle design cannot achieve optimum results
Solution Approach 1:
The patent applies preliminary action by performing component part selection and wiring harness design evaluation before finalizing the function allocation to ECUs. This reverse chronological approach allows the system to select component parts based on multiple potential allocation patterns, evaluate the results, and then determine the optimal allocation, achieving both process simplicity and design optimization.
Data Source
AI summary
An ECU (Electronic Control Unit) evaluation apparatus, for use in vehicle design, allocates functions appropriately to respective ECUs of a vehicle. The function allocation can be performed based on user-specified priority aspect(s) in conjunction with stored information concerning the respective functions and information concerning the ECUs, such as installation positions on the vehicle, mechanical and electrical specifications of component parts of ECUs, etc.