Emergency Braking Control with Wired-Wireless Failover
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing electromechanical braking (EMB) systems face instability and risk of accidents due to issues in wired connections between the main controller and local controllers, leading to potential failures in generating braking force.
Innovation Solution
An emergency braking apparatus and method that includes a first controller connected to a pedal stroke sensor wirelessly and a second controller connected to the first controller by dual wires, allowing the system to switch to wireless communication when errors occur in the wired connection, ensuring stable braking force generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wired connection is used between main controller and local controller, then communication reliability is improved, but system vulnerability to connection failures increases
Solution Approach 1:
The system dynamically switches between wired and wireless communication modes based on connection status. The local controller can receive braking commands through wired connection (first communication path) or wireless connection (second communication path), allowing the system to adapt to varying connection conditions and maintain reliability while reducing vulnerability to single-point failures.
Solution Approach 2:
The communication parameter changes from wired to wireless mode when connection issues are detected. The system monitors the wired connection status and automatically transitions to wireless communication when the wired connection fails, thereby maintaining communication reliability while protecting against the harmful effect of connection failures.
2Reliability
If wireless communication is implemented as backup, then system reliability is improved, but device complexity increases
Solution Approach 1:
The wireless communication module serves multiple functions: it acts as a backup communication path for braking commands and simultaneously enables emergency braking capability when wired connection fails. This multi-functionality justifies the added complexity by providing both redundancy and enhanced safety capabilities.
Solution Approach 2:
The wireless communication system is prepared in advance as a backup path. When wired connection fails, the system already has an alternative communication method ready, cushioning against the potential harm of complete communication failure. This prior preparation improves reliability while the complexity is managed through standardized wireless communication protocols.
Data Source
AI summary
An emergency braking apparatus, may include: a first controller controlling a braking device; a pedal stroke sensor receiving pedal stroke information of a brake pedal; and a second controller connected to the first controller by a wire to control the first controller, based on the pedal stroke information, wherein the first controller may be wirelessly connected to the pedal stroke sensor and receive the pedal stroke information to control the braking device.