Vehicle UI Power Saving Through Occupant Content Detection
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Solution Overview
Problem
The continuous consumption of audio and video content in vehicles leads to increased power consumption, even when occupants are no longer engaging with the content, such as falling asleep.
Innovation Solution
A system that includes a Cockpit Domain Controller to detect when occupants are no longer consuming content, such as through facial recognition and sensor monitoring, and sets devices to a power saving mode, while storing the last consumption state for resumption when the occupant becomes active again.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If content continues to be played after occupant stops consuming it, then content availability is maintained, but power consumption increases
Solution Approach 1:
The system dynamically adjusts the content playback state based on real-time detection of occupant consumption status. When an occupant is detected to have stopped consuming content (e.g., through facial recognition or sensor input detection), the system automatically transitions the content from playing state to paused state, thereby reducing power consumption while maintaining content availability for resumption.
Solution Approach 2:
The system implements a feedback mechanism that continuously monitors occupant engagement with content through sensors (cameras, microphones, touch sensors) and adjusts content playback accordingly. When the system detects that an occupant has stopped consuming content, it receives feedback to pause the content, thus resolving the contradiction between maintaining content availability and reducing power consumption.
2Use of energy by moving object
If content is paused when occupant stops consuming it, then power consumption is reduced, but content resumption capability is lost
Solution Approach 1:
Before pausing the content to reduce power consumption, the system performs preliminary actions by detecting and recording the consumption state (progress, position, or state) of the content. This preliminary recording ensures that when the occupant resumes consuming content, the system can restore the content to its exact previous state, thereby maintaining full resumption capability while enabling power savings during pauses.
3Adaptability or versatility
If multiple devices remain active for content playback, then content accessibility is maintained, but overall power consumption increases
Solution Approach 1:
The system applies local quality control by selectively managing the power state of individual devices based on specific occupant consumption patterns. Instead of keeping all devices in the vehicle active, the system identifies which specific devices are being used by which occupants and maintains power-saving states for devices that are not currently being used, thereby reducing overall power consumption while preserving content accessibility for active users.
Data Source
AI summary
Power consumption of a user interface in a vehicle is reduced. At least one occupant in a vehicle consuming content is determined. A content identifier (ID) associated with the content and an identifier associated with the at least one occupant consuming content is determined. A state of the at least one occupant associated with no longer consuming the content is determined. A device of the at least one occupant associated with no longer consuming the content is set to a power saving mode based on the state of the at least one occupant being determined to no longer be consuming the content.