Dual Brake Booster Power Crossover for Fault-Tolerant Braking
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Solution Overview
Problem
Existing brake boost systems for high gross weight vehicles face inefficiencies and complexity due to redundancy in components, which complicates operation and signaling in different braking scenarios.
Innovation Solution
A vehicle control system with dual electronic brake booster modules, each operably coupled to a front and rear axle hydraulic brake system, and dual power supplies, with a crossover switch and communication channels to ensure seamless power and communication between modules, allowing fallbacks to maintain brake boosting capabilities even in the event of power supply faults.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dual power supplies are used for each brake booster module, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent merges the power supply architecture by enabling one power supply to serve both brake booster modules through a crossover switch. When the primary power supply fails, the system automatically reconfigures to supply both modules from the secondary power supply, reducing component count while maintaining redundancy
Solution Approach 2:
The patent implements dynamic reconfiguration capability through a crossover switch that can change power supply connections based on system state. The power architecture transitions from a static dual-power-supply design to a dynamic system that adapts connectivity based on fault conditions, optimizing both reliability and simplicity
2Reliability
If separate power supplies are used for each brake booster module, then reliability is improved, but ease of operation deteriorates
Solution Approach 1:
The patent implements self-service through automatic fault detection and self-healing functionality. The control module continuously monitors power supply status and automatically reconfigures the power distribution through the crossover switch without driver intervention, eliminating the need for manual power management while maintaining high reliability
3Reliability
If redundant components are added to ensure system functionality, then reliability is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies universality by designing the second power supply and crossover switch to serve dual purposes: normal operation power distribution and fault condition backup power supply. This multi-functionality reduces the need for completely separate redundant systems, simplifying assembly while maintaining reliability
Data Source
AI summary
A vehicle control system for a vehicle may include a first electronic brake booster module, a second electronic brake booster module, a first power supply, a second power supply, and a vehicle control module. The vehicle control module may communicate with the first electronic brake booster module and the second electronic brake booster module, and the first electronic brake booster module and the second electronic brake booster module may communicate with one another. Responsive to a fault of one of the first power supply and the second power supply, the vehicle control module, the first electronic brake booster module, or the second electronic brake booster module may coordinate selection of a remaining one of the first power supply and second power supply to individually provide power to both the first electronic brake booster module and the second electronic brake booster module to maintain brake boosting capabilities for the vehicle.