Programmable Ignition Key System for Flexible Vehicle Access Control
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Solution Overview
Problem
Existing motor vehicle starting mechanisms with alcohol and drug detectors lack flexibility, requiring all users to undergo tests regardless of emergency situations and not allowing for varying levels of user rights, which restricts emergency starts and administrative functionalities.
Innovation Solution
A programmable ignition key system with adjustable identifiers allows for two types of keys: unrestricted and restricted, where unrestricted keys can start the vehicle without tests, and restricted keys require alcohol or drug tests, with an integrated database for rights management and an emergency start option, utilizing a mobile drug detector connected via a smartphone for flexible operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all users are required to undergo alcohol or drug tests before starting the vehicle, then safety is improved, but flexibility and ease of operation deteriorate due to inability to handle emergency situations or administrative needs
Solution Approach 1:
The system segments users into different categories by equipping ignition keys with unique identifiers that the control unit recognizes. Administrators have keys without restrictions, while other users have keys requiring alcohol or drug tests. This segmentation allows the system to apply different starting conditions to different users, maintaining safety for regular users while providing flexibility for administrators during emergencies or administrative tasks.
Solution Approach 2:
The system dynamically adjusts the starting requirements based on the identified user's rights stored in the control unit. When an administrator's key is detected, the system dynamically disables the alcohol or drug test requirement. When a regular user's key is detected, the system dynamically enables the test requirement. This dynamic adaptation resolves the contradiction by making the system both safe and flexible depending on who is attempting to start the vehicle.
2Device complexity
If a single type of ignition key is used for all users, then device complexity is reduced, but adaptability deteriorates because the system cannot differentiate between administrators and regular users
Solution Approach 1:
Instead of using physically different ignition keys, the system uses ignition keys that all look similar but contain unique identifier information (such as electronic codes or RFID tags). The control unit reads these identifiers and copies the corresponding user rights from stored data to determine whether alcohol or drug testing is required. This approach maintains simple, uniform physical keys while achieving complex user differentiation through information copying.
3Device complexity
If administrator rights are stored in the ignition key itself, then database complexity is reduced, but ease of operation deteriorates because the key must be physically present for any rights changes
Solution Approach 1:
The system introduces a mobile device as an intermediary between the administrator and the ignition key system. The administrator uses a mobile device with a corresponding application to communicate with the control unit and modify user rights or settings. This intermediary allows rights to be changed remotely without requiring physical possession of the ignition key, combining the simplicity of centralized storage with the flexibility of remote access.
Data Source
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AI summary
Starting mechanism for a motor vehicle comprising an ignition mechanism, a programmable ignition key and a detector for alcohol and/or drugs, wherein the ignition mechanism is configured to be started by the ignition key when the detector for alcohol and/or drugs provides a result below a threshold value, characterized in that the programmable ignition key has an adjustable identifier that deactivates the detector for alcohol and/or drugs and allows the ignition mechanism to be started.