Vehicle Access Status Buffering for Variable Door Motion
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Solution Overview
Problem
Existing methods for transmitting and storing status data from vehicle access devices, such as door and sliding step systems, face inefficiencies due to varying adjustment process durations, leading to excessive memory and bandwidth requirements, especially when unexpected collisions occur, resulting in high costs and frequent maintenance.
Innovation Solution
The method prioritizes storage and transmission by differentiating between continuous and discrete status data, allocating more space to continuous data during longer adjustment periods, and transmitting these data types separately, ensuring efficient use of resources and bandwidth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If measurement data is recorded with uniform temporal resolution over the entire adjustment period, then complete temporal progression data is available for meaningful evaluation, but memory requirements increase proportionally with adjustment duration
Solution Approach 1:
The patent applies dynamics by making the temporal resolution of measurement data adaptive rather than static. The system dynamically adjusts the recording frequency based on the actual duration of the adjustment process. For longer adjustment processes, the temporal resolution is reduced, while for shorter processes, higher resolution is maintained. This dynamic adaptation allows the system to optimize between measurement precision and memory usage according to actual operational conditions.
Solution Approach 2:
The patent changes the parameter of temporal resolution based on the adjustment process duration. When the adjustment process exceeds a certain threshold duration, the system modifies the recording parameters to reduce the amount of data collected while still capturing essential information. This parameter change enables the system to maintain measurement meaningfulness while significantly reducing memory requirements for prolonged adjustment processes.
2Loss of information
If measurement data is transmitted continuously at high resolution, then complete status information is available for condition-based maintenance, but bandwidth requirements increase with adjustment duration
Solution Approach 1:
The system dynamically adjusts the data transmission rate and resolution based on the adjustment process duration. For extended adjustment processes, the transmission protocol reduces the frequency and detail of status reports, while maintaining critical information necessary for condition-based maintenance. This dynamic approach ensures that bandwidth is used efficiently without sacrificing the completeness of essential status data.
Solution Approach 2:
The patent extracts and transmits only the most relevant status information during prolonged adjustment processes. Rather than transmitting all measurement data at full resolution, the system identifies and transmits key parameters that are essential for maintenance assessment. This selective extraction reduces bandwidth consumption while preserving the information needed for meaningful condition-based maintenance decisions.
3Stability of the object's composition
If uniform data recording is applied regardless of adjustment duration, then data consistency is maintained, but resource utilization becomes inefficient during prolonged adjustment processes
Solution Approach 1:
The patent introduces dynamic adaptability to the data recording process, allowing the system to adjust its operation based on the actual adjustment process duration. Rather than applying a static uniform recording approach, the system modifies its behavior dynamically - maintaining consistent high-resolution recording for normal-duration processes while switching to an optimized mode for prolonged processes. This ensures data consistency within each operational context while improving overall resource utilization efficiency.
Data Source
Figure 1
Figure 2a~2b
Figure 3a~3b
AI summary
The invention relates to a method for transmitting status data of an access device (2a, b) of a vehicle (1), in particular a vehicle (1) used for public transport, wherein the access device (2a, b) comprises a movable element (3a, b) and an electric drive (4a, b) for adjusting the movable element (3a, b), wherein the drive (4a, b) is controlled by control signals (5a, b) of a control device (6a, b) of the access device (2a, b) for an adjustment process of the movable element (3a, b), wherein the adjustment process is recorded over an adjustment duration (15a, b) and, based on the recorded adjustment process, actual status data (9a, b) for describing the recorded adjustment process are generated and stored in the control device (6a, b), wherein the actual status data (9a, b) are transmitted from the control device (6a, b) to a vehicle server (10) of the vehicle (1). transmitted via a vehicle network (11).The method is characterized in that the actual state data (9a, b) comprise continuous actual state data (14a, b) as well as discrete actual state data (16a, b), and that the continuous actual state data (14a, b) and the discrete actual state data (16a, b) are stored in a common data buffer (17a, b) of the control device (6a, b).