Driver Breath Alcohol Verification Using Image and Touch Sensing
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Solution Overview
Problem
Existing alcohol detection systems in vehicles lack effectiveness in accurately determining if the occupant has drunk alcohol, particularly susceptible to circumvention through improper use or manipulation.
Innovation Solution
An alcohol detection apparatus comprising an image sensor, touch sensor, and alcohol sensor, along with a processor, that performs multiple checks including image recognition, touch detection, and breath analysis to confirm the driver's identity and authenticity of breath samples, ensuring both hands are engaged and windows and doors are closed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple sensors and verification processes are added to prevent circumvention, then detection reliability is improved, but device complexity increases
Solution Approach 1:
The alcohol detection system is divided into multiple independent verification modules: image sensor for facial recognition, touch sensor for hand position detection, alcohol sensor for breath analysis, and processor for coordinating verification. Each module independently verifies a specific aspect of driver identity and state, collectively preventing circumvention while maintaining manageable system architecture through functional segmentation.
2Measurement precision
If image recognition and touch detection are performed to verify driver identity, then measurement precision is improved, but loss of time increases
Solution Approach 1:
The image sensor continuously captures driver images and the touch sensor monitors hand positions in real-time before alcohol detection is triggered. These verification processes are performed preliminarily and continuously, so when breath analysis is required, the system already has current information about driver identity and state, reducing the time penalty of verification.
Solution Approach 2:
The processor continuously receives feedback from image sensors, touch sensors, and alcohol sensors, dynamically adjusting verification requirements based on detected conditions. This feedback loop enables rapid verification by only performing necessary checks based on real-time sensor data, reducing unnecessary detection time while maintaining identification accuracy.
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
Enhances the reliability of alcohol detection by reducing the likelihood of false positives, thereby accurately determining if the driver has consumed alcohol, thereby preventing unauthorized operation of the vehicle.
Implementation Method 1
an image sensor configured to generate a captured image by performing imaging of a first occupant in a driver's seat
Implementation Method 2
a touch sensor provided at the driver's seat and configured to perform a detection of a touch
Implementation Method 3
an alcohol sensor configured to perform a detection of an alcohol component included in breath of the first occupant
Data Source
Figure 1~2
Figure 3A
Figure 3B
AI summary
An alcohol detection apparatus (10) includes an image sensor (11), a touch sensor (12), an alcohol sensor (13), and a processor (20). The image sensor (11) generates a captured image by performing imaging of an occupant in a driver's seat of a vehicle (1). The alcohol sensor (13) performs a detection of an alcohol component in breath of the occupant. Based on the captured image, the processor (20) performs a first process of confirming whether the occupant is touching the touch sensor (12), and performs a second process of confirming whether the occupant is holding the alcohol sensor (13). The processor (20) performs a determination process of determining that a result of the detection obtainable by the alcohol sensor (13) is effective when conditions are satisfied. The conditions include that the occupant is touching the touch sensor (12) in the first process and that the occupant is holding the alcohol sensor (13) in the second process.