Wire Packing Calculation Method for Composite Wires
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Solution Overview
Problem
Current methods lack an efficient calculation method for packing wire materials into a compact wiring harness while satisfying specific movement conditions, particularly for composite wires like twisted and flat wires, which are common in vehicles and indoor applications.
Innovation Solution
A calculation method and apparatus that sets movement conditions for wire materials, treats cross-sectional shapes as non-overlapping circles, defines a target circle smaller than the comprehensive circle, searches for optimal positions, and iteratively adjusts the target circle to minimize the comprehensive circle size, ensuring wire materials meet their respective movement conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the method of JP-A-2003-179718 is used to pack wire materials into a minimally sized circular form, then the packing efficiency is improved, but the movement conditions of wire materials (such as composite wires and specified locations) cannot be satisfied
Solution Approach 1:
The invention introduces dynamic control of wire material movements through defined movement conditions. Instead of static packing arrangements, the system dynamically adjusts wire positions based on specified movement conditions, allowing composite wires and wires with location constraints to be properly handled while maintaining packing efficiency.
Solution Approach 2:
The invention changes the parameters of the packing calculation by incorporating movement conditions as additional constraints. This includes defining specific movement rules for different wire materials, such as composite wires that must move together and wires with specified placement locations, transforming the packing problem into a constrained optimization problem that satisfies both efficiency and adaptability requirements.
2Device complexity
If wire materials are packed without establishing movement conditions, then the calculation is simpler, but the packing results cannot be applied to real-world scenarios where wire movements are restricted
Solution Approach 1:
The invention applies preliminary action by establishing movement conditions before performing the packing calculation. By pre-defining how wire materials should move (or not move) during the packing process, the system ensures that the calculation reflects real-world constraints while maintaining computational feasibility. This preliminary setup includes identifying composite wires, specifying location constraints, and setting movement rules that guide the subsequent optimization process.
Data Source
AI summary
A calculation method includes the steps of: setting a moving condition about the respective wire materials; regarding cross-sectional shapes of the wire materials as a plurality of circles; assuming a comprehensive circle containing the circles; defining a target circle which is slightly smaller than the comprehensive circle; searching for a destination position into which the circles excluding an insertion-tried circle is moved as farther as possible from the insertion-tried circle; inserting the insertion-tried circle into a space within the target circle; defining a new target circle that is slightly smaller than the present target circle when all the insertion-tried circle is inserted in the target circle, and returning to the searching step; repetitively performing the defining step, the searching step, the insertion step, and defining step of the new target circle for reducing the comprehensive circle; and determining information about positions of the comprehensive circle and the circles.