Power Split Tailgate Door Collision Prevention
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Solution Overview
Problem
Power split tailgate systems in vehicles face challenges in preventing collisions between independently moving doors, especially when interrupted by user commands or obstacles, and lack effective control mechanisms to manage non-standard door positions.
Innovation Solution
A control system with separate control units for each door that communicate via positional data from sensors and a Body Control Management Unit to prevent collisions by ensuring doors do not occupy the same space simultaneously, using Hall sensors to track door positions and articulate them into safe open positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate control units are used for each door to enable independent control, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The control system is divided into separate control units for each door (first control unit for first door, second control unit for second door). Each control unit independently monitors its own door's position and communicates with the other control unit to coordinate movements, enabling independent door control while maintaining system organization through modular segmentation.
2Reliability
If real-time positional data exchange is implemented between control units, then reliability is improved by preventing collisions, but loss of information increases due to communication requirements
Solution Approach 1:
Each control unit continuously monitors the position of its controlled door using sensors and exchanges this positional data with the other control unit in real-time. This feedback mechanism allows both control units to make informed decisions about door movement, preventing collisions by detecting when doors might occupy the same space and adjusting their control signals accordingly.
3Reliability
If the system monitors multiple door positions and coordinates movements to prevent collisions, then safety is improved, but device complexity increases
Solution Approach 1:
The control units exchange positional data and coordinate their control signals before doors reach positions where collisions could occur. By proactively communicating door positions and anticipating potential conflict zones, the system prevents collisions before they happen rather than reacting after contact is made, thereby improving safety while managing complexity through preventive coordination.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Effectively mitigates or prevents door collisions in various use cases, including interruptions by users or obstacles, by ensuring real-time positional data exchange and controlled movement between closed, collision zone, wide open, and fully open positions.
Implementation Method 1
using Hall sensors to track door positions
Data Source
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AI summary
A power, split door system (12) for a vehicle (10), comprising a first vehicle door (14) arranged to articulate between a closed position and an open position; a second vehicle door (16) arranged to articulate between a closed position and an open position; first (40a, 40b) and second (42) drive means for moving the first and second doors, respectively, between the closed and open positions; and control means (18, 83, 85, 87) for controlling the first and second drive means so as to control movement of the first and second doors between the open and closed positions; wherein the control means is provided with positional information relating to each of the first and second vehicle doors; and wherein the control means is configured to ensure that each of the first and second vehicle doors do not attempt to simultaneously occupy the same space. The first and second doors may be configured such that in a closed position, the first and second doors partially overlap.