Redundant Pressure-Controlled Electronic Braking Assemblies for Autonomous Vehicles
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Solution Overview
Problem
Current vehicle braking systems, especially in autonomous vehicles, lack redundancy and fail-safe mechanisms, which can lead to inadequate braking performance and safety in critical situations.
Innovation Solution
The implementation of a redundant braking system with pressure-controlled electronic braking assemblies and electronic control units, connected through a communication network, allows for autonomous adjustment of brake pressure based on sensor data from various sensors, including radar, image, and lidar sensors, ensuring reliable braking even without operator input.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a redundant braking system with multiple pressure-controlled electronic braking assemblies is implemented, then braking reliability and safety are improved, but device complexity increases
Solution Approach 1:
The braking system is divided into multiple independent pressure-controlled electronic braking assemblies, each capable of independently controlling brake pressure. This segmentation allows the system to maintain reliability through redundancy while managing complexity by creating modular, interchangeable units that can be controlled by separate electronic control units.
Solution Approach 2:
The system controls braking by dynamically adjusting the pressure parameter of pressurized fluid streams through multiple independent braking assemblies. Each assembly can independently modify pressure levels to achieve desired braking forces, allowing flexible control while maintaining system reliability through multiple controllable pathways.
2Reliability
If autonomous braking control based on sensor data is implemented, then braking performance in critical situations is improved, but ease of operation deteriorates due to reduced operator control
Solution Approach 1:
The electronic control units receive real-time feedback from multiple sensor sources including radar, image sensors, and lidar to automatically adjust braking pressure. This feedback mechanism enables the system to respond autonomously to detected objects and conditions, improving braking performance in critical situations without requiring operator intervention.
Solution Approach 2:
The braking system performs autonomous braking decisions and executions based on sensor data processing, effectively serving itself by eliminating the need for operator input in normal operation. The system independently monitors its environment and executes braking maneuvers, improving response time and reliability while reducing the operational burden on drivers.
3Reliability
If multiple pressurized fluid sources are used to supply braking assemblies, then system reliability is improved, but loss of substance increases
Solution Approach 1:
The pressurized fluid supply system is segmented into multiple independent sources, each capable of supplying one or more braking assemblies. This segmentation provides redundancy in case of fluid loss or failure in one source, while the modular structure allows efficient fluid management and minimizes overall substance loss through targeted isolation of affected segments.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution provides a high-resolution, reliable, and redundant braking interface that minimizes hardware modifications, offering fail-safe braking capabilities suitable for autonomous vehicles, ensuring safe operation in both manual and automated modes.
Implementation Method 1
Each pressure-controlled electronic braking assembly is configured to adjust a pressure of a pressurized fluid stream provided to a vehicle brake set
Data Source
AI summary
Techniques for braking an autonomous vehicle include providing a pressurized fluid stream from a plurality of pressurized fluid sources to a plurality of pressure-controlled electronic braking assemblies; providing the pressurized fluid stream from a pressurized fluid control output of a first pressure-controlled electronic braking assembly directly to a pressurized fluid control input of a second pressure-controlled electronic braking assembly; providing the pressurized fluid stream from the second pressure-controlled electronic braking assembly to at least one vehicle brake set; providing sensor output data from one or more vehicle sensors to a plurality of electronic control units; and based at least in part on the sensor output data, controlling at least one of the first or second pressure-controlled electronic braking assemblies to adjust a pressure of the pressurized fluid stream from at least one of the first or second pressure-controlled electronic braking assemblies to the vehicle brake set.