Vehicle Seat Motor Control for Rapid Third-Row Escape
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Solution Overview
Problem
In emergency situations, passengers in the third row of a vehicle face difficulties in escaping due to slow operation of seats controlled by electric motors, and mechanical escape mechanisms often fail to achieve the desired escape speed.
Innovation Solution
A seat control apparatus that classifies motors into deactivation and non-deactivation targets, stops driving of deactivation-target motors when an escape mechanism is operated, and maintains the second motor in an activation state to facilitate selective control, while transmitting signals for door unlocking and accident alerts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If electric motors are used to control seat location, then seat control precision is improved, but escape speed deteriorates
Solution Approach 1:
The system dynamically changes motor control mode based on detected emergency conditions. During normal operation, motors provide precise controlled movement for seat adjustment. During emergencies, the system transitions to mechanical escape mode where motor control is deactivated or overridden, allowing rapid manual seat movement for passenger evacuation.
2Speed
If mechanical escape mechanism is activated, then escape speed is improved, but reliability deteriorates due to motor malfunctions
Solution Approach 1:
The system prepares for potential motor failures by implementing a mechanical escape mechanism as a backup. Sensors detect motor abnormal conditions (overcurrent, overheating, positioning failures) and automatically trigger the mechanical escape path, cushioning against the reliability issues of electric motor dependence during critical evacuation scenarios.
3Ease of operation
If selective motor control is implemented, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The motor control system is segmented into multiple independently controllable motor units, each capable of being activated or deactivated based on operational mode. This segmentation allows the control system to selectively engage only the necessary motors for a given task (normal adjustment or emergency escape), simplifying control logic while maintaining operational flexibility.
Data Source
AI summary
A seat control apparatus includes an input part, a driving part, a sensor part, a memory, and a controller. The seat control apparatus may receive, through the input part, a switch input for controlling a seat. The seat control apparatus may identify, using the sensor part, whether an escape mechanism for the seat is operated. The seat control apparatus may stop driving of at least one motor included in the driving part when the escape mechanism is operated.