Vehicle High Beam Daylight Override While Preserving Automatic Control
Solution Overview
Problem
Existing vehicle headlight systems with automatic high beam control (AHB) functions often prevent high beam activation during daylight conditions, requiring manual disabling which compromises nighttime safety and functionality.
Innovation Solution
A daylight override mechanism in the electronic control unit (ECU) allows high beam activation during daylight while maintaining AHB functionality by detecting daylight conditions and enabling an override, without disabling the AHB system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If automatic high beam control is enabled to prevent high beam usage during daylight, then energy consumption is reduced and safety is improved, but user control flexibility is lost and nighttime functionality is compromised
Solution Approach 1:
The system dynamically adjusts the high beam control strategy based on detected driving conditions. During daylight hours, the system allows high beam activation when explicitly requested by the user, while maintaining automatic suppression during nighttime. The ECU transitions between different control modes (automatic suppression vs. user-controlled) based on environmental conditions, providing both safety and flexibility without requiring manual system reconfiguration.
2Loss of energy
If automatic high beam control suppresses high beam during daylight, then unnecessary energy consumption is prevented, but user convenience is reduced when high beam is needed
Solution Approach 1:
The system continuously monitors driving conditions through sensors (light sensors, time of day detection) and adjusts high beam control accordingly. When daylight conditions are detected, the ECU permits high beam activation in response to user input. When nighttime conditions are detected, the system automatically suppresses high beam unless conditions warrant activation. This feedback mechanism ensures energy efficiency during daylight while maintaining user convenience when high beam is genuinely needed.
3Device complexity
If manual disabling of AHB is required to use high beam during daylight, then system simplicity is maintained, but operational complexity increases and nighttime safety is compromised
Solution Approach 1:
The high beam control system is segmented into distinct operational modes: automatic high beam suppression mode for nighttime safety, and user-controlled mode for daylight operation. The ECU automatically transitions between these modes based on detected conditions (light level, time of day). This segmentation allows the system to maintain simplicity for the user (no manual configuration needed) while ensuring appropriate control strategies are applied for each operating condition, thereby maintaining both simplicity and safety.
Data Source
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AI summary
Systems, methods, and devices for controlling a high beam headlight (42) of a vehicle (10). One system includes a high beam headlight (42) mounted on a vehicle (10), a sensor (60, 62) mounted on the vehicle (10), and an electronic control unit (200). The electronic control unit (200) is configured to receive an input to turn on the high beam headlight (42), determine a status of an override of an automatic high beam function of the vehicle (10), and determine a current time of day based on data received from the sensor (60, 62). In response to the current time of day being daylight and the status of the override being enabled, the electronic control unit (200) is configured to override the automatic high beam function to allow the high beam headlight (42) to be turned on based on the input while maintaining a status of the automatic high beam function as enabled.