Vehicle Cabin Ventilation Control with Dedicated Air Circuit Adjusters
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Solution Overview
Problem
Conventional vehicle cabin ventilation control systems lack precision and user customization options, with limited adjustable air distribution settings and difficulty in accurately setting air sub-flow rates, especially while driving.
Innovation Solution
A dedicated control member for each air circuit allows users to intuitively and easily adjust air sub-flow rates, with one-way variations, and an electronic control unit that automatically adjusts other sub-flows to maintain a constant overall air flow rate, supported by a display showing current air distribution for precise adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional ventilation control systems provide limited predetermined air distribution settings, then the system structure remains simple, but the user cannot accurately adjust or personalize air sub-flow rates according to individual needs
Solution Approach 1:
The control system is segmented by providing a dedicated control member for each air circuit (first, second, and third air circuits). Each control member independently controls the air sub-flow rate for its corresponding circuit, allowing users to customize air distribution without requiring a complex centralized control system. This segmentation enables precise individual adjustment while maintaining overall system simplicity.
2Measurement precision
If specific means are provided to accurately set air sub-flow rates, then adjustment precision improves, but the system becomes complex and expensive, and adjustment becomes difficult for users while driving
Solution Approach 1:
Each air circuit is equipped with a dedicated control member that directly controls its corresponding air sub-flow rate. The control members are designed to be intuitively operable with clear feedback, allowing users to easily adjust settings without requiring complex procedures or specialized knowledge. This self-service approach enables accurate adjustment while maintaining ease of use during driving.
Solution Approach 2:
The system incorporates feedback mechanisms where the electronic control unit receives signals from control members and adjusts air sub-flow rates accordingly. The control members provide tactile or visual feedback to users, confirming the current setting and enabling precise adjustment through simple interactions, making the system both accurate and easy to operate.
3Adaptability or versatility
If manual control members are provided for each air circuit, then user customization capability improves, but the system complexity and cost increase
Solution Approach 1:
The control members are designed with multi-functionality, serving as both the interface for user input and the control element for the electronic control unit. Each control member integrates multiple functions: user interaction interface, signal generation, and control signal transmission. This universal design enables full customization capability while avoiding the need for separate complex control components for each function.
Data Source
Figure 1
Figure 2~3
Figure 4~8
AI summary
The system (4) comprises: - a unit (5) providing an air flow (F) to the cabin (1 ); a first, second and third air circuits (11, 12, 13), each directing an air sub flow (F1, F2, F3) forming at least part of the air flow (F) towards the cabin through openings (17, 18, 19) which are located in distinct distribution areas (21, 22, 23) in the cabin; - a distribution input device (32) for manually setting a user defined air distribution i.e. the respective rates (Q1, Q2, Q3) of the air sub flows- which comprises, for each air circuit, a dedicated control member (33, 34, 35) for setting the air sub flow rate in said air circuit; an electronic control unit (25) connected to the distribution input device and controlling the air sub flow rates according to the rate (Q1, Q2, Q3) of the air sub flow (F1, F2, F3) manually selected for one air circuit (11, 12, 13).