Vehicle Terminal Device User Access Management
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Solution Overview
Problem
Existing systems for managing terminal devices associated with vehicle data buses lack effective methods to restrict access and prevent misuse by less skilled operators, particularly in heavy equipment like agricultural machines, where different security configurations and user access levels are needed based on operator experience and proficiency.
Innovation Solution
A method and system that determines a user's level through authentication and stores identity and permission data, allowing only enabled features to be displayed on the terminal device, with the ability to switch between different access configurations for multiple vehicles without prior knowledge of security settings, using a data processor and data storage device connected via a data bus to manage feature access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If access to vehicle functions is restricted based on user authentication and permission data, then operator safety and prevention of misuse are improved, but system complexity and authentication overhead increase
Solution Approach 1:
The system segments user access rights into different permission levels (first level, second level, third level) with progressively increasing capabilities. Each level corresponds to specific sets of enabled and disabled features, allowing fine-grained control over vehicle functions based on operator qualifications without requiring a completely separate system for each user.
Solution Approach 2:
The system performs preliminary authentication and permission verification before granting access to vehicle functions. The controller determines user identity and retrieves corresponding permission data from storage before enabling any features, preventing unauthorized access in advance rather than reacting to violations.
2Adaptability or versatility
If multiple user permission levels are implemented with different enabled and disabled features, then adaptability to different operator skill levels is improved, but device complexity and data management requirements increase
Solution Approach 1:
Different users receive customized display configurations based on their specific permission levels. Each user level has tailored enabled and disabled feature sets, allowing the system to adapt to local needs of different operators (apprentice, journeyman, master) rather than applying a uniform interface to all users.
Solution Approach 2:
The terminal device is designed to universally support multiple user levels and authentication types (operator, service technician, dealer) within a single system. The controller can retrieve and apply different permission data sets for various user categories, making one device serve multiple functions for different user groups.
3Reliability
If authentication processes are performed before accessing vehicle features, then security and prevention of unauthorized access are improved, but operational time and user convenience deteriorate
Solution Approach 1:
The system performs authentication and permission retrieval as preliminary actions before feature access is granted. By determining user identity and loading corresponding permission data in advance, the system ensures security requirements are met before any vehicle functions become available, preventing unauthorized access rather than checking later.
Solution Approach 2:
The terminal device autonomously handles authentication and permission verification without requiring external intervention. The controller automatically retrieves permission data from storage based on user identification and configures the display accordingly, streamlining the authentication process.
Data Source
AI summary
A method and system for managing a display of a terminal device comprises supporting communication of the terminal device with one or more first controllers of a first vehicle via a first data bus. A user level is determined of a user of the first vehicle based on an identity of the user as verified by an authentication process. The identity and user level of a corresponding user is stored in the terminal device. Permission data is retrieved on first enabled features and first disabled features for the first vehicle from the one or more first controllers based on the determined user level. The first enabled features are displayed on a display associated with the terminal device consistent with the retrieved permission data.