Vehicular Electronic Control Device Circuit Board Activation Regions
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Solution Overview
Problem
The development of electronic control devices for hybrid vehicles with plug-in charging and preliminary air-conditioning functions is hindered by the need for separate devices that can activate when the main switch is both on and off, leading to increased development and manufacturing costs due to duplicated circuit board development.
Innovation Solution
A vehicular electronic control device with a circuit board divided into two regions, where the first region activates the device when the main switch is on and the second region activates it with a wake-up signal, allowing for easy diversion of the circuit board to devices activated only when the main switch is on, reducing the need for duplicate development.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate electronic control devices are prepared for different activation conditions (main switch on vs. wake-up signal), then the device can execute specific functions under different conditions, but the development cost and manufacturing cost increase due to independent circuit board development
Solution Approach 1:
The patent applies universality by designing a single circuit board that can serve multiple activation conditions. The circuit board includes a first region for main switch activation and a second region for wake-up signal activation, allowing one board to replace what would traditionally require separate dedicated boards for each function.
Solution Approach 2:
The patent applies segmentation by dividing the circuit board into distinct functional regions. The first region handles main switch activation while the second region handles wake-up signal activation, allowing independent configuration and optimization of each region while sharing the same physical substrate.
2Ease of manufacture
If a single circuit board is used for both activation conditions, then development cost is reduced, but the circuit board complexity increases to handle multiple activation paths
Solution Approach 1:
The circuit board is segmented into distinct first and second regions, each dedicated to specific activation conditions. This segmentation reduces the complexity of signal routing and component placement by creating clear functional zones, making the design more manageable despite handling multiple activation paths.
Solution Approach 2:
Different regions of the circuit board are optimized for their specific functions. The first region is optimized for main switch activation while the second region is optimized for wake-up signal activation, allowing each region to have the appropriate complexity level for its specific purpose rather than the entire board needing to accommodate all complexities.
Data Source
AI summary
A vehicular electronic control device activated according to an on-state signal from a main switch and a wake-up signal from an external device includes: a microcomputer; a voltage generating circuit for the microcomputer; a start circuit that generates the operation voltage with the voltage generating circuit when the on-state signal or the wake-up signal input; a printed wiring board; and a transmission wiring pattern that transmits the on-state signal. A first region of the board mounts the microcomputer and the voltage generating circuit, which activate the vehicular electronic control device when the main switch turns on. A second region of the board mounts the start circuit, which activates the vehicular electronic control device according to the wake-up signal. The transmission wiring pattern extends from the first region to reach the second region.