Lighting Load Management for Vehicle Voltage Drop Control
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Solution Overview
Problem
Emergency vehicles face electrical system failures due to excessive loads exceeding charging or reserve capacity, leading to voltage drops that can cause critical systems to malfunction, posing safety risks.
Innovation Solution
A lighting system with integrated load managers that monitor input voltage and adjust power levels of loads to maintain minimum voltage thresholds, reducing power when necessary to prevent voltage drops and ensure system stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If all DC loads are switched on simultaneously, then the lighting system provides maximum illumination and functionality, but the battery system voltage drops below minimum operating levels causing system failure
Solution Approach 1:
The lighting system dynamically adjusts power levels based on real-time voltage monitoring. When voltage drops below minimum thresholds, the controller automatically reduces power consumption of lighting loads to maintain stable operation, preventing system failure while preserving illumination when conditions permit
Solution Approach 2:
The system changes operational parameters (power levels) of lighting loads based on battery voltage conditions. The controller modulates lighting output to match available electrical capacity, transforming the static on/off control into variable power level control to resolve the contradiction between maximum illumination and system stability
2Illumination intensity
If high power lighting loads are installed, then the lighting system provides adequate illumination for emergency vehicle operations, but excessive voltage drop occurs under load causing wire heating and potential fire hazards
Solution Approach 1:
The system implements continuous voltage monitoring with feedback control. The controller measures voltage at the lighting loads, compares it against minimum thresholds, and adjusts power levels accordingly to prevent excessive voltage drop and wire heating, ensuring safe operation of high-power lighting systems
Solution Approach 2:
The system performs preliminary voltage monitoring before allowing full power operation. By continuously checking voltage levels and predicting potential drops under load, the controller preemptively adjusts power levels to prevent harmful voltage drops and wire heating before they occur
Data Source
AI summary
A lighting system including one or more loads and one or more load managers electrically coupled to or embedded in the one or more loads. The one or more load managers are configured to measure an input voltage from the one or more loads, determine if the input voltage is below a minimum voltage for the lighting system, when the input voltage is below the minimum voltage threshold, adjust a power level of the lighting system, and when the input voltage is above a minimum voltage, store the power level as an operational power for the lighting system.