Emergency Braking Control That Holds Operation During EDSS Failures
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Solution Overview
Problem
Conventional emergency driving stop systems (EDSS) fail to ensure safety when a vehicle breaks down due to a collision after automatic braking is activated, as they do not maintain braking operation during system component failures.
Innovation Solution
An EDSS configuration that includes a switch for driver abnormalities, an electronically controlled braking system for automatic braking, and an externally output section to notify the outside of the system's operation, with a control section that maintains the braking system's operation even if an EDSS-related component breaks down, ensuring continuous braking until the vehicle stops.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the EDSS automatically brakes when driver abnormality is detected, then driver safety is improved, but the vehicle may collide with obstacles due to insufficient deceleration control
Solution Approach 1:
The system applies preliminary anti-action by implementing a control mechanism that prevents harmful collisions before they occur. The control section monitors the braking process and automatically adjusts braking force to ensure the vehicle stops safely without colliding with obstacles, counteracting the potential harmful effect of insufficient deceleration control.
Solution Approach 2:
The system employs feedback by continuously monitoring the braking process and adjusting the braking force accordingly. The control section receives information about the vehicle's deceleration state and obstacle detection, then modifies the braking output to achieve safe stopping, creating a closed-loop control system that prevents collisions while ensuring driver safety.
2Device complexity
If the EDSS turns off automatically when a component breaks down, then system complexity is reduced, but safety is compromised during ongoing emergency operations
Solution Approach 1:
The system applies beforehand cushioning by preparing a safety mechanism that activates when component breakdown occurs during EDSS operation. The control section detects component failures and automatically implements alternative braking control to maintain safety, cushioning against the harmful effect of system failure before it can compromise the emergency operation.
Solution Approach 2:
The system ensures continuity of useful action by maintaining braking operation even when component breakdown occurs. The control section continues to execute braking commands through alternative control paths when primary components fail, ensuring the emergency stopping function remains active throughout the entire emergency operation without interruption.
Data Source
AI summary
Provided is a driver error response system with which it is possible to further increase safety during a driver error. This driver error response system has a switch operated during an error of the driver, an electronically controlled braking system that can execute automatic braking, a vehicle-external output unit that informs the outside of the vehicle that the driver error response system is operating, and a control unit that turns on the electronically controlled braking system and the vehicle-external output unit when at least the switch is operated, the control unit continuing the ON operation of the electronically controlled braking system when a part related to the driver error response system fails during the operation of the driver error response system.