Digital Key Alcohol Interlock With Personalized Wait-Time Prediction
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Solution Overview
Problem
Existing alcohol ignition interlock systems fail to accurately determine the alcohol decomposition time period for drivers, leading to inconvenience and potential indefinite waiting due to repeated ignition attempts, as they do not account for individual variations in alcohol metabolism based on factors like weight and gender.
Innovation Solution
An interlock control system linked to a digital key that calculates the alcohol decomposition time period using personal information, such as height, weight, and gender, and adjusts the driver seat for comfortable alcohol measurement, providing a predicted time for vehicle use after alcohol clearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the ignition is restricted based on alcohol detection without considering individual factors, then drunk driving prevention is achieved, but the driver cannot determine the waiting time and may wait indefinitely
Solution Approach 1:
The system performs preliminary actions by calculating the alcohol decomposition time in advance based on personal information (weight, gender, height) before the ignition restriction period begins. This allows the driver to know the exact waiting time beforehand, eliminating indefinite waiting while maintaining the restriction period necessary for drunk driving prevention.
2Ease of operation
If a fixed alcohol decomposition time is applied to all drivers, then the system is simple to operate, but it cannot accurately reflect individual alcohol metabolism differences
Solution Approach 1:
The system applies local quality by customizing the alcohol decomposition time calculation for each individual driver based on their specific personal characteristics (weight, gender, height). Instead of a uniform time period for all users, each driver receives a personalized decomposition time that accurately reflects their individual metabolism rate, thereby improving measurement precision while maintaining ease of operation through automated calculations.
3Device complexity
If the driver must manually position themselves for alcohol measurement, then the measurement process is simple, but the driver must inconveniently incline the body toward the sensor
Solution Approach 1:
The system applies dynamics by making the driver seat automatically adjustable rather than fixed. The seat moves dynamically to position the driver's mouth at the optimal location for alcohol measurement, eliminating the need for the driver to manually incline their body. This improves ease of operation while the control system manages the complexity of the adjustment mechanism.
Data Source
AI summary
An interlock control system linked to a digital key includes an alcohol interlock controller, which calculates a decomposition time period required to decompose blood alcohol of each driver using personal information of the driver, extracted by authenticating a digital key, when a blood alcohol concentration measured by an alcohol measuring sensor exceeds a reference value. The alcohol interlock controller then restricts ignition of a vehicle using the digital key for the decomposition time period. By calculating and providing the decomposition time period for restricting the ignition of the vehicle, based on the personal information and an actual alcohol clearance of the driver, predicted information on a time point for allowing the driver to drive the vehicle is provided to the driver. An interlock control method for the same is also provided.