Vehicle Projection Display System with Sensor-Based Automatic Control
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Solution Overview
Problem
Existing vehicle display systems lack integration with other vehicle systems, leading to poor usability as occupants must manually stop the projection device when exiting or engaging with the vehicle, resulting in inefficient operation.
Innovation Solution
A display system that includes a projection device, sensors (such as door, window, and seating sensors), and a control unit to automatically manage the projection based on vehicle and occupant states, ensuring seamless operation and improved usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the projection device operates independently without integration with other vehicle systems, then the device structure remains simple, but the usability deteriorates as occupants must manually stop the projection when exiting or engaging with the vehicle
Solution Approach 1:
The projection device is merged with the vehicle's existing sensor systems (door sensors, window sensors, seating sensors) and control units. The control unit receives signals from these sensors and automatically controls the projection device, integrating it into the vehicle's overall system architecture. This merging eliminates the need for manual operation while maintaining reasonable system complexity by leveraging existing vehicle components.
Solution Approach 2:
The control unit is given multi-functionality by enabling it to receive signals from various sensor types (door, window, seating sensors) and control the projection device accordingly. This universal control approach allows a single control unit to handle multiple sensing inputs and coordinate the projection device's operation across different scenarios, improving usability without requiring separate dedicated controllers for each function.
2Productivity
If the projection device is manually controlled, then the system complexity remains low, but the productivity deteriorates due to the time and effort required for manual operation
Solution Approach 1:
The projection device achieves self-service operation by automatically responding to sensor signals without requiring manual intervention. When the door sensor detects door opening, the window sensor detects window opening, or the seating sensor detects occupant presence, the control unit automatically adjusts the projection device's operation. This self-service capability significantly improves productivity by eliminating manual operation steps while the control system complexity remains manageable by utilizing the vehicle's existing control infrastructure.
3Reliability
If the projection device operates without coordination with vehicle systems, then the device simplicity is maintained, but the reliability deteriorates as the projection may continue when it should stop
Solution Approach 1:
The system implements feedback mechanisms where sensor signals continuously provide information about vehicle state (door open/closed, window open/closed, occupant presence) to the control unit. The control unit processes this feedback and adjusts the projection device's operation accordingly, stopping the projection when appropriate conditions are detected. This feedback loop ensures operational reliability by automatically responding to changing vehicle conditions while maintaining reasonable system coordination complexity through the use of existing sensor networks.
Data Source
AI summary
There are provided a display system and a vehicle that provide good usability to an occupant. A display system includes: a projection device provided in a vehicle interior of a vehicle and capable of projecting a video in the vehicle interior; a sensor provided in the vehicle to detect a state of the vehicle or an occupant of the vehicle; and a control unit that receives a signal from the sensor to control the projection device. The control unit changes a projection state of the projection device based on the signal from the sensor. By automatically changing the projection state of the projection device, the effort for the occupant to operate the projection device is saved, and the usability of the projection device is improved.