Vehicle Surroundings Display Controller Battery Conservation
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Solution Overview
Problem
Existing vehicle surroundings display systems face challenges in maintaining battery health and ensuring the ability to view surroundings after the vehicle's power unit has been shut down, as they consume battery power even when the vehicle is turned off, leading to reduced battery life and potential restart issues.
Innovation Solution
A vehicle surroundings display device with a controller that manages different operational modes (normal active, power-off active, standby, and shut-down modes) to conserve battery power, transitioning to shut-down mode earlier when predetermined conditions are met, such as the vehicle door being locked or battery voltage dropping, and quickly reactivating when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electronic mirror system is operated after the power unit has been shut down to enable viewing of vehicle surroundings, then the ability to view surroundings is improved, but the battery voltage drops and battery life is reduced
Solution Approach 1:
The system dynamically adjusts its operational state based on real-time conditions. After the power unit is shut down, the control device transitions the electronic mirror system from a fully active state (power-off active mode) to a low-power standby state (standby mode) after a predetermined duration, and finally to a shut-down state (shut-down mode) after another predetermined duration. This dynamic state transition allows the system to maintain viewing capability when needed while conserving battery power during extended periods of inactivity.
Solution Approach 2:
The system implements periodic operation by cycling through different operational modes at predetermined time intervals. The control device activates the electronic mirror system immediately after power unit shutdown (power-off active mode), then switches to standby mode after the first predetermined standby duration, and finally to shut-down mode after the second predetermined standby duration. This periodic action pattern ensures the system is available when needed but conserves energy during extended idle periods.
2Speed
If the electronic mirror system remains in actuated state for extended period after power unit shutdown, then the ability to quickly view surroundings is improved, but the battery is depleted and restart capability is reduced
Solution Approach 1:
The control device performs preliminary actions by transitioning the electronic mirror system to standby mode and then to shut-down mode after predetermined durations following power unit shutdown. This preliminary action sequence ensures that the system is prepared for potential future viewing needs while proactively conserving battery power, preventing complete battery depletion that would compromise restart capability.
Solution Approach 2:
The system implements beforehand cushioning by implementing a staged shutdown approach with predetermined standby durations. Instead of immediately shutting down the electronic mirror system after power unit shutdown, the system maintains actuated states for predetermined periods, providing a cushion of availability. This gradual transition to shut-down mode protects against sudden power loss while ensuring battery power is conserved for essential restart operations.
Data Source
AI summary
A vehicle surroundings display device includes an imaging device, a display device, and a controller is provided. The imaging device images a region toward a rear side of a vehicle and sideways from the vehicle. The display device is capable of displaying an image captured by the imaging device. The controller controls display of the display device, and selectively a normal active mode, a power-off active mode, a standby mode and a shut-down mode.