In-Vehicle Breath Alcohol Detection With Driving-Ready Time Feedback
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Solution Overview
Problem
Current technologies lack an effective solution to prevent drunk driving by failing to accurately determine a driver's ability to operate a vehicle safely after consuming alcohol, and existing breathalyzer devices are not integrated with vehicle systems to prevent operation when alcohol levels are above the legal limit.
Innovation Solution
A drunk driving prevention system that includes a breath test device to detect carbon dioxide and alcohol content, an alcohol detection unit to assess the driver's inebriation, a computation unit to calculate a driving-possible time, and a notification unit to inform the driver through the vehicle's infotainment system or terminal, along with additional features like passenger detection and air quality monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a breathalyzer tester is provided to measure alcohol content, then the driver's blood alcohol concentration can be detected, but the driver may ignore the measurement result and continue driving, making the device limited to a simple tester role
Solution Approach 1:
The system continuously monitors alcohol content in the driver's breath and provides real-time feedback through the infotainment system. When alcohol levels exceed the legal limit, the system notifies the driver and prevents vehicle operation until the driver sobers up, creating a closed-loop feedback mechanism that ensures compliance rather than mere measurement
Solution Approach 2:
The infotainment system acts as an intermediary between the breathalyzer device and the driver. It processes the raw alcohol measurement data, interprets it against legal limits, and communicates the results to the driver in an understandable format, bridging the gap between technical measurement and driver comprehension
2Device complexity
If conventional vehicles are not equipped with separate devices to prevent operation when the driver drinks, then the vehicle structure remains simple, but it is impossible to prevent driving under the influence of alcohol in advance
Solution Approach 1:
The drunk driving prevention functionality is merged with the existing infotainment system rather than being implemented as a separate standalone device. The breathalyzer, alcohol detection unit, computation unit, and notification functions are integrated into the vehicle's existing information system, avoiding additional complexity while enabling comprehensive prevention capabilities
Solution Approach 2:
The infotainment system is given multiple functions: it serves as the display interface for the driver, the notification system for alcohol level alerts, and the control interface for vehicle operation restrictions. This multi-functionality eliminates the need for separate dedicated devices for each function
3Reliability
If police officers crack down on drunk driving, then drunk driving accidents can be deterred to some extent, but the crackdown process is pointed out as an inefficient cultural aspect and causes inconveniences
Solution Approach 1:
The system performs preliminary detection and prevention by measuring alcohol levels before the driver operates the vehicle. If the driver is over the legal limit, the system prevents vehicle startup or operation before the driver can drive, eliminating the need for post-detection police intervention and roadside sobriety checks
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively prevents drunk driving by providing accurate notifications to drivers about their ability to operate a vehicle safely, enhancing safety and reducing the risk of accidents by integrating with the vehicle's infotainment system and monitoring air quality and passenger presence.
Implementation Method 1
a breath test device configured to detect carbon dioxide and alcohol content contained in a driver's breath
Data Source
AI summary
According to the present disclosure, a drunk driving prevention system including: an alcohol detection unit configured to detect a driver's inebriation through the breath test device provided in a vehicle; a computation unit configured, when the driver is detected to be in a drunk state by the alcohol detection unit, to compute a driving-possible time at which the drunk state is resolved in the future so that driving is possible; and a notification unit configured to output the driving-possible time or whether or not driving is possible through an infotainment system of the vehicle or a driver's terminal is disclosed.