Vehicle Display Engine State Recognition
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Solution Overview
Problem
Conventional display devices for vehicles fail to clearly indicate the engine off state, leading to user misunderstanding, as they continue to display vehicle information even after the engine is stopped, making it difficult for users to recognize the engine's status.
Innovation Solution
A display device with an information acquiring unit and a control unit that discontinues the display of vehicle information when the engine is turned off and restarts it after a predetermined time, ensuring users can easily identify the engine's off state while still providing necessary information post-engine shutdown.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the display unit continues to display vehicle information after the engine is turned off, then the user can obtain vehicle information after engine shutdown, but the user cannot clearly recognize the engine off state
Solution Approach 1:
The display control unit implements periodic action by discontinuing the display of vehicle information for a predetermined period after detecting engine shutdown, then restarting the display. This temporary interruption creates a clear visual indicator of the engine off state while still providing information access after the transition period
Solution Approach 2:
The display control unit performs preliminary action by anticipating the need to indicate engine shutdown. It proactively discontinues the display before the user might misunderstand the engine state, creating a clear transition signal in advance
2Reliability
If the display unit turns off when the engine is stopped, then the engine off state is clearly indicated, but the user cannot obtain vehicle information after engine shutdown
Solution Approach 1:
The display control unit uses periodic action by temporarily discontinuing display for a predetermined period after engine shutdown, then restarting it. This allows clear engine state indication during the discontinuation period while restoring information availability afterward
3Loss of information
If the display continues to show vehicle information after engine shutdown, then information is continuously available, but power is wasted on unnecessary display operation
Solution Approach 1:
The display control unit implements periodic action by discontinuing display for a predetermined period after engine shutdown, then restarting it. This reduces power consumption during the discontinuation period while maintaining information availability after the transition
Solution Approach 2:
The display control unit applies partial action by providing vehicle information display for only part of the time (after the predetermined period following engine shutdown) rather than continuously, reducing overall power consumption while still meeting user information needs
Data Source
AI summary
A display device for a vehicle includes an information acquiring unit, a display unit and a control unit. The information acquiring unit acquires vehicle information regarding the vehicle. The vehicle information includes engine information indicating an engine on and off state. The control unit controls the display unit to display the vehicle information when the engine information indicates an engine on state. Further, the display unit controls the display unit to discontinue the display of the vehicle information once when the engine on state of the engine information is switched to the engine off state, and to restart display of the vehicle information.