Vehicle Entry System Inclination Sensor Control
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Solution Overview
Problem
Current entry systems for vehicles, particularly rail vehicles, lack effective means to account for inclination, which affects motor current consumption and maintenance accuracy, leading to potential errors and inefficiencies in door operation and maintenance.
Innovation Solution
Incorporating a sensor, such as a gyro sensor, to measure inclination and integrate this information into the control algorithm for condition-dependent and predictive maintenance, allowing for adaptive control logic and improved plausibility checks of signals, thereby optimizing door operation and reducing false positives in maintenance algorithms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If inclination measurement is not integrated into the entry system, then the system structure remains simple, but the reliability of door operation and maintenance assessments deteriorates due to inaccurate current consumption evaluation
Solution Approach 1:
The inclination sensor serves multiple functions: it provides tilt information for control algorithm adaptation, validates motor current signals, and supports maintenance algorithms. By making the sensor multi-functional, the patent avoids adding separate systems for each function, thereby improving reliability without proportionally increasing complexity.
Solution Approach 2:
The inclination sensor acts as an intermediary that provides contextual information about the vehicle's orientation. This intermediary data allows the control system to interpret motor current signals more accurately by understanding the environmental conditions under which the door operation occurs.
2Measurement precision
If inclination information is not used in control algorithms, then the control logic remains simple, but the accuracy of motor current validation and maintenance assessment deteriorates
Solution Approach 1:
The control algorithm adapts its parameters based on inclination data. When the vehicle is tilted, the algorithm adjusts expected current consumption ranges and validation thresholds accordingly. This parameter adaptation allows accurate validation without requiring completely new control logic for each inclination scenario.
Solution Approach 2:
The system pre-establishes the relationship between inclination angles and expected motor current characteristics. By having this reference information available beforehand, the system can quickly validate actual current measurements against appropriate expectations without complex real-time calculations, improving measurement precision while keeping the control algorithm manageable.
3Reliability
If inclination-specific reference characteristic curves are not stored, then the storage requirements remain low, but the ability to validate signals and reduce false positives in maintenance algorithms deteriorates
Solution Approach 1:
The reference characteristic curves are segmented by inclination angle ranges. Instead of storing continuous data for all possible angles, the system stores discrete reference curves for specific inclination segments (e.g., -15°, -10°, -5°, 0°, 5°, 10°, 15°). This segmentation reduces storage requirements while maintaining sufficient accuracy for validation purposes.
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
This approach enhances the reliability of door operation by accurately assessing system states and reducing errors, improves predictive maintenance by accounting for inclination-specific power consumption, and ensures safe and efficient operation of entry systems across varying vehicle inclinations.
Implementation Method 1
The provisioning device (114) is designed to detect or determine an inclination of the entry system (110) relative to a reference
Data Source
Figure 1
Figure 2~3
AI summary
A method for operating an entry system (110) for a vehicle (100) is presented. The method includes a step for reading an inclination signal (115). The inclination signal (115) represents an inclination of the entry system (110) relative to a reference. The method also includes a step for reading at least one process signal (117) representing a movement process of at least one entry element (112) of the entry system (110). The method further includes a step for determining an operating signal (127) for operating the entry system (110) using the inclination signal (115) and the at least one process signal (117).