Vehicle Window Dimming Control for Rapid Privacy Switching
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Solution Overview
Problem
Conventional vehicle privacy protection systems, such as shade devices and dimming glass, are slow to switch between permeable and impermeable states, leading to delayed privacy protection and visibility adjustments.
Innovation Solution
A vehicle dimmer control system that uses a controller to dynamically control the visible light transmissivity of dimming glass in vehicle windows based on various vehicle state information and position information, allowing rapid switching between permeable and impermeable states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a shade device is used to protect privacy, then privacy protection is achieved, but it takes time for the shade to spread or wind
Solution Approach 1:
The patent replaces the mechanical shade device with an electrochromic glass system that changes transparency through electrical signals. The electrochromic glass eliminates the need for mechanical winding or spreading mechanisms, achieving instant privacy protection without the time delay associated with mechanical shade operations.
Solution Approach 2:
The electrochromic glass utilizes phase transition of electrochromic material between different optical states (transparent and opaque) in response to electrical signals. This phase transition enables rapid switching between permeable and impermeable states, resolving the time delay issue of mechanical shade devices.
2Adaptability or versatility
If conventional dimming glass is used, then switching between permeable and impermeable states is achieved, but the switching speed is slow
Solution Approach 1:
The controller predicts when privacy protection or visibility is needed based on vehicle position and state information, and activates the electrochromic glass in advance. This preliminary action ensures the glass is already in the desired state when needed, effectively increasing switching speed by preparing the system before the actual requirement arises.
Solution Approach 2:
The system continuously monitors vehicle position, speed, and state through sensors, and uses this feedback to dynamically control the electrochromic glass transparency. This closed-loop feedback mechanism enables rapid adaptation to changing conditions, optimizing both switching speed and adaptability.
3Reliability
If the shade device is used, then privacy protection is provided, but the occupant cannot immediately check the vehicle exterior
Solution Approach 1:
The electrochromic glass provides dynamic, real-time control of transparency based on vehicle position and state. Unlike fixed mechanical shades, the glass can instantly switch between transparent and opaque states, allowing occupants to immediately check the exterior when needed while maintaining privacy protection when required, without waiting for mechanical movement.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system ensures prompt privacy protection and visibility adjustments based on vehicle conditions, enhancing occupant safety and privacy by controlling window transmissivity in response to vehicle state and position changes.
Implementation Method 1
dimming glass changed in visible light transmissivity based on an electrical signal
Data Source
AI summary
A vehicle dimmer control system includes a controller that adjusts the visible light transmissivity of dimming glass in each of multiple windows included in a vehicle. The controller uses dimming determination information, which is at least one of own vehicle state information indicating a state of the vehicle and own vehicle position information indicating a vehicle position, to determine whether to bring the windows into a permeable or impermeable state. Based on this dimming determination information, the controller selects a control target window from among the plurality of windows and controls the dimming glass of that window to be in the permeable state or the impermeable state.