Motor Vehicle Closure Element Control With Position-Based Validation
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Solution Overview
Problem
Existing methods for operating closure elements in motor vehicles face challenges in reliably detecting valid operator actions while ensuring high safety to prevent undesired triggering and potential collisions.
Innovation Solution
A control arrangement modifies a check routine based on the relation between the closure element position, execution position, and intended adjustment direction, using sensor values to assess collision risk and adjust detection sensitivity accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the detection sensitivity for operator actions is increased to improve convenience, then the reliability of detecting valid operator actions is improved, but the risk of undesired triggering and collision increases
Solution Approach 1:
The detection zone is divided into different regions with different evaluation criteria. Positions closer to the closure element (higher collision risk) require more stringent validation, while positions farther away (lower collision risk) allow for more sensitive detection. This spatially varying quality control resolves the contradiction by allowing high detection reliability in safe zones while preventing false triggering in dangerous zones.
Solution Approach 2:
The check routine dynamically adapts its sensitivity based on the real-time relationship between the closure element position and the detected operator action position. As the closure element moves, the validation criteria for operator actions are adjusted accordingly, allowing the system to maintain optimal detection reliability while minimizing collision risk at each moment.
2Object-affected harmful factors
If the check routine is made more stringent to prevent undesired triggering, then the safety and collision risk reduction is improved, but the detection probability of valid operator actions decreases
Solution Approach 1:
Different validation stringency levels are applied to different spatial locations within the detection zone. Areas where operator actions are less likely to cause collision use less stringent checks, maintaining high detection probability. Areas where collision risk is higher use more stringent checks, reducing undesired triggering. This resolves the contradiction by making the check routine adaptively strict rather than uniformly so.
3Measurement precision
If the detection zone is divided into danger zone and distance zone with different risk assessments, then the precision of collision risk assessment is improved, but the device complexity increases
Solution Approach 1:
The detection zone is segmented into a danger zone and a distance zone based on their different collision risk characteristics. This segmentation enables more precise risk assessment by treating each zone according to its specific requirements. The complexity increase is justified by the significant improvement in detection reliability and safety.
Solution Approach 2:
The check routine uses different parameter sets (validation criteria, sensitivity thresholds) for different zones. By changing the evaluation parameters based on spatial location, the system achieves precise collision risk assessment without requiring entirely separate detection systems for each zone.
Data Source
AI summary
A method for operating a closure element arrangement of a motor vehicle, wherein the closure element arrangement has a closure element, a drive arrangement assigned to the closure element for adjusting the closure element in an adjustment range and a control arrangement for actuating the drive, wherein sensor values are detected by means of a sensor arrangement in a detection zone with respect to an operator action carried out by an operator outside the motor vehicle, wherein the detected sensor values are checked by means of the control arrangement in a check routine for the presence of a valid operator action, wherein the drive arrangement is caused by means of the control arrangement to adjust the closure element in an adjustment direction when a valid operator action is present, and wherein a closure element position of the closure element is determined by means of the control arrangement.