Electric Door Collision Unlocking With Partial Opening Backup
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Solution Overview
Problem
Electric doors in vehicles often fail to unlock or open properly after a collision, trapping occupants and posing a safety risk.
Innovation Solution
A control system and method that includes a door switch, door unlocking module, and central controller to unlock and drive the electric door to open by a first distance, allowing manual operation after a collision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If power-operated doors are adopted to improve door opening performance, then door opening capability is enhanced, but reliability of unlocking and opening under collision conditions deteriorates
Solution Approach 1:
The system performs preliminary actions by pre-configuring the door control module to automatically execute unlocking and opening sequences when collision signals are detected. The control module is pre-programmed with collision detection thresholds and automatic door opening protocols, enabling the system to respond immediately without requiring manual intervention or complex real-time decision-making during the critical collision event.
Solution Approach 2:
The door control module serves as an intermediary between the collision detection system and the door actuation mechanism. It receives collision signals from the sensor system, processes the information, and translates it into appropriate door unlocking and opening commands. This intermediary function ensures reliable signal transmission and coordinated operation between different system components during collision events.
2Reliability
If automatic door opening is implemented to improve safety, then occupant escape capability is enhanced, but device complexity increases
Solution Approach 1:
The control system is segmented into distinct functional modules: a door control module dedicated to door operations, a collision detection module for signal acquisition, and a central controller for coordination. This segmentation allows each module to perform its specific function independently, simplifying the overall system architecture while maintaining high reliability. The door control module handles only door-related tasks, reducing computational complexity during critical events.
Solution Approach 2:
The door control module is designed with self-service capabilities, automatically detecting collision conditions through integrated sensors and executing door opening sequences without requiring continuous external control. The module autonomously monitors system state, detects collision signals, and initiates appropriate responses, reducing the need for complex external control mechanisms and minimizing overall system complexity.
Data Source
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Figure 3~4
AI summary
Provided is a control system for an electric door. The control system for the electric door includes a door switch (110), a door unlocking module (120), a door control module (130), and a central controller (140). Each of the door switch (110), the door unlocking module (120), and the door control module (130) is connected to the central controller (140). The central controller (140) is configured to obtain, in response to receiving a vehicle collision signal and a door opening signal of the door switch (110), a state of the door unlocking module (120) and a state of the door control module (130), and transmit a door unlocking instruction and a door opening permission instruction to the door unlocking module (120) when the door unlocking module (120) is in an online state and the door control module (130) is in an offline state. The door unlocking module (120) is configured to, in response to receiving the door unlocking instruction and the door opening permission instruction, control an electric door to be unlocked and drive the electric door to open by a first distance, to enable a user to manually pull open the electric door. The present disclosure further relates to a vehicle including the above control system and a control method for an electric door.