Electronic Door Latch Diagnostics Using Sensor Data Buffering
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Solution Overview
Problem
Existing systems for diagnosing complex electronic door latch arrangements in vehicles face challenges due to their complexity and lack of knowledge in workshops, often resulting in ineffective or inefficient diagnostics of the electronic door latch arrangement.
Innovation Solution
A system comprising sensors for acquiring diagnosis-specific signals, a control unit for storing these signals as diagnostic data, and an interface for transmitting this data to a service tool, enabling efficient and comprehensive diagnostics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the electronic door latch arrangement becomes more complex to provide more functions, then the functionality and versatility are improved, but the difficulty of detecting and measuring diagnostic parameters increases
Solution Approach 1:
The electronic door latch arrangement is divided into multiple functional components (door lock, door opener, door closer) each with dedicated sensors. This segmentation allows independent monitoring of each component's operational parameters, making diagnostics more manageable despite overall system complexity.
Solution Approach 2:
A control unit acts as an intermediary between the sensors in the electronic door latch arrangement and external diagnostic systems. The control unit collects, processes, and transmits diagnostic data, shielding the complexity of the electronic system while providing accessible diagnostic information through standard interfaces.
2Measurement precision
If comprehensive diagnostic data is collected from multiple sensors, then the measurement precision and diagnostic accuracy are improved, but the device complexity increases
Solution Approach 1:
The control unit serves multiple functions: it controls the electronic door latch operations, collects data from multiple sensors, processes diagnostic information, and communicates with external diagnostic tools. This multi-functionality consolidates complexity into a single component rather than distributing it across multiple dedicated units.
Solution Approach 2:
Multiple sensor types (position sensors, force sensors, temperature sensors) are merged into a single diagnostic data stream handled by one control unit. This consolidation allows comprehensive monitoring while maintaining a manageable system architecture through centralized data management.
3Ease of operation
If diagnostic data is made easily accessible through standard interfaces, then the ease of operation for diagnostics is improved, but the loss of time for data processing and transmission may increase
Solution Approach 1:
The control unit continuously collects and pre-processes diagnostic data from sensors during normal operation, maintaining a ready buffer of diagnostic information. When a diagnostic query is initiated, pre-processed data is immediately available for transmission, reducing the time required to retrieve comprehensive diagnostic information.
Solution Approach 2:
The system supports multiple data transmission modes and formats that can be adjusted based on diagnostic needs. Data can be transmitted in real-time during operation or batched during idle periods, allowing flexibility in balancing immediate accessibility with efficient use of communication resources.
Data Source
Figure 1~2
AI summary
The invention relates to a System comprising an electronic door latch arrangement (1) for a vehicle (2) and a control unit (3) comprising a storage unit (5) and an interface (6) for contacting a corresponding interface of a service tool, wherein the electronic door latch arrangement (1) has at least one sensor (4), wherein the at least one sensor (4) is configured for acquiring signals of the electronic door latch arrangement (1) of at least one diagnosis-specific signal type, the at least one sensor (4) is connected to the control unit (3) for transmitting the signals, and the control unit (3) is configured for storing the signals in the form of diagnostic data in the storage unit (5) and providing the diagnostic data at the interface (6) connected to the storage unit (5) for transmitting data, such that the diagnostic data is retrievable employing the service tool. In this way a system for the simple and rapid provision of diagnostic data for the diagnosis of an electronic door latch arrangement (1) is provided.