Vehicle Seat-Lifting Control for Inclination, Heat, and Low Charge
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Solution Overview
Problem
Existing vehicles with seat lifting mechanisms lack sufficient safety features, particularly when the seat is in a high position, leading to instability and potential hazards.
Innovation Solution
Incorporating a control device that prohibits lifting when certain conditions are met, such as excessive temperatures, low battery charge, or significant inclination, and includes a mechanism to lower the seat automatically when unsafe conditions are detected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the seat is lifted to a high position, then the user can have better visibility and access, but the vehicle stability and safety deteriorate
Solution Approach 1:
The control device checks safety conditions (battery temperature, inclination angle, SOC) before allowing the seat to be lifted to a high position. By performing preliminary safety verification, the system prevents unstable conditions from occurring in the first place, thus enabling high position operation only when safety criteria are met.
Solution Approach 2:
The control device continuously monitors safety parameters (battery temperature, inclination angle, SOC) and provides feedback to control the lifting device. When unsafe conditions are detected, the system automatically prohibits lifting or triggers automatic lowering, creating a closed-loop safety control mechanism that maintains stability while allowing high position operation when safe.
2Ease of operation
If the lifting device operates without restrictions, then the ease of operation is improved, but the safety deteriorates due to unstable conditions
Solution Approach 1:
The control device applies preliminary anti-action by prohibiting lifting operations when unsafe conditions are detected (high battery temperature, excessive inclination angle, low SOC). This preventive measure counteracts potential safety hazards before they can manifest, allowing unrestricted operation only when safety is assured.
Solution Approach 2:
The control device converts potentially harmful unstable conditions into beneficial safety warnings. By monitoring parameters like battery temperature, inclination angle, and SOC, the system transforms harmful factors into control signals that prevent unsafe operations, thereby improving overall safety while maintaining operational ease when conditions are favorable.
3Reliability
If safety monitoring and control restrictions are added, then the safety is improved, but the device complexity increases
Solution Approach 1:
The control device performs multiple functions: it controls the lifting device operation, monitors battery temperature, checks inclination angle, monitors SOC, and manages safety logic all in one unit. This multi-functionality consolidates what could be separate complex systems into a single integrated controller, improving safety without proportionally increasing overall system complexity.
Data Source
AI summary
A vehicle 1 includes a vehicle body frame 2, a drive unit 3 provided in the vehicle body frame and movable on a floor, a seat 4 arranged above the vehicle body frame and supporting the buttocks of a user, a lifting device 5 provided between the vehicle body frame and the seat and lifting or lowering the seat between a low position and a high position, a battery 7 provided in the vehicle body frame, and a control device 6 controlling the drive unit and the lifting device. The control device prohibits lifting drive of the lifting device in response to the seat being at the low position and a lifting prohibition condition being satisfied.