Autonomous Vehicle HMI Status Display for Maintenance
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Solution Overview
Problem
The efficient management and maintenance of autonomous vehicle fleets are hindered by the cumbersome process of obtaining maintenance information, which often requires external devices and is inefficient, especially since autonomous vehicles lack a driver to identify operational issues.
Innovation Solution
An autonomous vehicle system that includes a human-machine interface (HMI) capable of determining suitable locations for providing status information, setting modes for displaying maintenance tasks, and authenticating users to access this information, allowing for the quick identification and addressing of operational issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If external devices are used to obtain vehicle status information, then information can be obtained, but the process becomes cumbersome and inefficient
Solution Approach 1:
The HMI system enables the vehicle to provide its own maintenance information and status data through its built-in display interface. The system self-diagnoses operational issues and presents the information without requiring external diagnostic devices, allowing technicians to obtain vehicle status directly from the vehicle's own HMI interface.
Solution Approach 2:
The HMI interface serves multiple functions: it provides vehicle status information, displays maintenance tasks, enables user authentication, and facilitates location-based mode switching. This multi-functional interface replaces the need for separate external diagnostic devices, consolidating information display and interaction capabilities within the vehicle's own system.
2Ease of repair
If technicians manually check vehicle status using external devices, then maintenance can be performed, but downtime increases
Solution Approach 1:
The system proactively identifies operational issues and prepares maintenance information in advance by continuously monitoring vehicle status and storing diagnostic data. When the vehicle enters a depot or maintenance location, the HMI automatically displays pre-prepared maintenance tasks and status information, eliminating the need for technicians to perform manual checks and reducing downtime.
Solution Approach 2:
The HMI system provides real-time feedback to technicians about vehicle status, maintenance needs, and operational issues. This immediate feedback mechanism allows technicians to understand the full scope of required maintenance actions before starting work, improving workflow efficiency and reducing vehicle downtime through better-planned maintenance procedures.
3Ease of operation
If the HMI displays maintenance information at any location, then accessibility is improved, but security and appropriateness are compromised
Solution Approach 1:
The HMI interface dynamically adapts its functionality and information display based on the vehicle's geographic location. The system uses location data to determine whether the vehicle is in a depot, maintenance facility, or other appropriate location, and automatically adjusts the HMI mode to display maintenance information only when the vehicle is in suitable locations, ensuring both accessibility and security.
Solution Approach 2:
The system applies different operational characteristics to the HMI interface based on local conditions (vehicle location). In depot or maintenance facility locations, the HMI provides full access to maintenance information and diagnostic data. In other locations, the HMI restricts or modifies the information displayed, ensuring that sensitive maintenance data is only accessible in appropriate environments while maintaining usability where needed.
Data Source
AI summary
According to one aspect, a method includes determining when a vehicle is in a location that is suitable for providing status information on a human machine interface (HMI). The vehicle includes an autonomy system, a diagnostics system, a mode module, and the HMI which is arranged to provide a user interface. The method also includes determining the status information for the vehicle using the diagnostics system when it is determined that the vehicle is in the location that is suitable for providing the status information, and setting the HMI to a first mode using the mode module when it is determined that the vehicle is located in the location that is suitable for providing the status information. The status information is provided to the mode module after setting the HMI to the first mode. Finally, the method includes providing the status information to the HMI to be displayed.