Integrated Breath Chamber for Vehicle Impairment Detection
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Solution Overview
Problem
Chemical impairment detection devices face challenges in accurately measuring breath samples due to potential tampering, shallow exhalations, and condensation issues, which can lead to inaccurate readings and increased complexity and cost.
Innovation Solution
A chemical impairment detection system with an integrated breath chamber that includes pressure sensing, temperature measurement, and audio detection to validate the breath sample, preventing tampering and condensation, and ensuring a valid deep-lung sample is provided.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If traditional separate components are used for pressure sensing, temperature measurement, and audio detection, then device complexity and cost increase, but measurement capabilities are maintained
Solution Approach 1:
The patent combines pressure sensing, temperature measurement, and audio detection capabilities into a single integrated breath chamber component. This merging of previously separate components reduces device complexity and cost while maintaining all necessary measurement functions for validating breath samples.
Solution Approach 2:
The integrated breath chamber serves multiple functions simultaneously: it acts as a pressure sensor for volume measurement, a temperature sensor for condensation prevention, and an audio detector for hum validation. This multi-functionality eliminates the need for separate components while preserving measurement precision.
2Reliability
If multiple separate sensors and components are used for breath validation, then measurement accuracy is maintained, but device complexity and cost increase
Solution Approach 1:
The patent integrates multiple validation functions (pressure sensing, temperature measurement, audio detection) into a single breath chamber component, reducing device complexity while maintaining the reliability of breath sample validation through the combined capabilities of the integrated component.
3Device complexity
If breath samples are processed without integrated validation, then device complexity is reduced, but accuracy and reliability of alcohol level measurements decrease
Solution Approach 1:
The integrated breath chamber performs preliminary validation of the breath sample through pressure sensing, temperature measurement, and audio detection before the alcohol level measurement is taken. This preliminary action ensures sample validity and prevents tampering, thereby maintaining measurement precision without requiring complex post-processing systems.
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 fraudulent samples by ensuring a valid breath sample volume and temperature, reducing the risk of tampering and condensation, thereby enhancing the accuracy and reliability of alcohol level measurements.
Implementation Method 1
Pressure sensing means in the cavity measure the pressure of the air sample in the chamber
Implementation Method 2
The breath chamber includes a temperature measuring means for measuring temperature in the breath chamber
Implementation Method 3
an audio detector for detecting sound waves associated with the air sample
Implementation Method 4
an alcohol sensor for detecting an alcohol level in the air sample
Data Source
AI summary
A chemical impairment detection system adaptable for use in a vehicle. The impairment detection system includes an intake adapted to receive an air sample from a source and an alcohol sensor for detecting an alcohol level in the air sample. An integrated breath chamber channels the air sample from the intake to the alcohol sensor. Source evaluator means in the breath chamber measure one or more characteristics of the received air sample for validating the sample. The source evaluator means measures the air sample characteristics as the air sample flows through the breath chamber.