Redundant PCB with Void Isolation for EPS Systems
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Solution Overview
Problem
The increasing demand for redundant processors with isolation in electronic power steering systems for vehicles leads to increased manufacturing and production costs due to the need for separate circuit boards and interconnection systems, as well as additional components for motor position sensor systems.
Innovation Solution
A printed circuit board design featuring a void between processor sections, which provides mechanical isolation and allows for multiple processors and sensors to be integrated on a single board, reducing the need for additional circuit boards and interconnection systems, while maintaining redundancy and safety features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate circuit boards and interconnection systems are used to provide processor isolation and redundancy, then reliability is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent merges multiple circuit boards into a single integrated circuit board with distinct processor sections. The first processor section and second processor section are implemented on the same board, eliminating the need for separate circuit boards and interconnection systems while maintaining processor isolation and redundancy functionality.
Solution Approach 2:
The circuit board is segmented into distinct processor sections (first processor section and second processor section) that are physically separated by a void. This segmentation provides isolation between processors while keeping them on the same board, reducing overall system complexity.
2Reliability
If separate circuit boards are used for redundant processors, then processing redundancy is improved, but manufacturing cost increases
Solution Approach 1:
The patent combines redundant processor sections onto a single circuit board, eliminating the need for multiple separate boards and their associated interconnection systems. This reduces component count, assembly steps, and manufacturing costs while maintaining redundancy capability.
Solution Approach 2:
The single circuit board serves multiple functions by accommodating both the first processor section and second processor section, as well as providing isolation between them. This multi-functionality reduces the overall number of components needed in the system.
3Adaptability or versatility
If additional circuit boards are added for motor position sensor systems, then sensor integration capability is improved, but device complexity increases
Solution Approach 1:
The patent integrates the motor position sensor system onto the existing circuit board by providing a sensor mounting area on the same board. This eliminates the need for additional circuit boards for sensor integration, reducing overall system complexity.
Data Source
AI summary
An apparatus for an electronic power steering system includes a printed circuit board and a first sensor. The printed circuit board comprising: a first surface and a second surface opposite the first surface; a first processor section extending in a first direction on the first surface; a second processor section extending in a second direction opposite the first direction on the second surface; and a void disposed between the first surface and the second surface, the first processor section and the second processor section being separated by the void.