Transdermal Alcohol Monitor with Replaceable Liquid Cartridge
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Solution Overview
Problem
Current alcohol monitoring devices for individuals on parole or house arrest are costly, time-consuming, and impractical due to issues with accuracy and tampering, especially when the devices are not securely fastened during movement, leading to unreliable readings.
Innovation Solution
Portable alcohol monitoring devices with a device body, alcohol sensor, and liquid cartridge, featuring a securing mechanism that maintains the sensor in contact with the skin using a force element, and tamper-resistant hardware to prevent unauthorized access, along with a replaceable liquid supply for improved accuracy and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the strap is maintained relatively tight to assure reasonable reading, then measurement precision is improved, but ease of operation deteriorates due to movement restrictions
Solution Approach 1:
The device is divided into separate functional components: a monitor unit with sensor and a replaceable liquid cartridge. This segmentation allows the sensing mechanism to remain stable and secure against the skin while the liquid supply can be independently replaced without affecting the sensor's position or the subject's comfort.
Solution Approach 2:
The patent changes the state of the liquid supply from a permanent integrated component to a replaceable cartridge system. This parameter change allows the liquid level to be maintained at optimal levels for sensor contact, ensuring measurement precision while the cartridge can be easily replaced without disturbing the sensor's secure positioning against the skin.
2Ease of repair
If the device is made easily serviceable with replaceable components, then ease of repair is improved, but reliability deteriorates due to potential tampering
Solution Approach 1:
The liquid cartridge is nested within a protective housing that includes tamper-resistant features. The cartridge can be replaced through a secured access point that requires authentication or special tools, allowing serviceability while preventing unauthorized tampering. The nested structure protects the replaceable component while maintaining security.
Solution Approach 2:
An intermediary mechanism (such as a tamper-resistant latch or authentication system) is introduced between the user and the replaceable liquid cartridge. This intermediary allows authorized service personnel to replace the cartridge while preventing unauthorized individuals from accessing or tampering with the device, thus balancing serviceability with reliability.
3Device complexity
If integrated liquid supply is used, then device complexity is reduced, but productivity deteriorates due to time-consuming service
Solution Approach 1:
The liquid supply is pre-filled in replaceable cartridges that are prepared in advance. This preliminary action allows the liquid supply to be pre-tested and pre-packaged, so that during service only the cartridge needs to be replaced rather than refilling or reconfiguring the liquid supply system. This maintains relative structural simplicity while dramatically reducing service time and improving productivity.
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 solution provides reliable, accurate, and tamper-resistant alcohol monitoring, ensuring consistent readings even during movement and reducing the risk of device tampering, thus enhancing the monitoring of alcohol consumption for parolees and house arrestees.
Implementation Method 1
an alcohol sensor that relies on a liquid supply to perform an alcohol measurement on a subject
Implementation Method 2
a force element that is operable to press the alcohol sensor toward the subject
Implementation Method 3
the sensor body encasing the alcohol sensor and being attached to the electronics body via a torsion hinge
Data Source
AI summary
Various embodiments of the present invention provide alcohol monitoring devices, and methods for using such. As one example, an alcohol monitoring device is disclosed that includes a device body, an alcohol sensor, and a liquid cartridge. The alcohol sensor is associated with the device body, and relies on a liquid supply to perform an alcohol measurement on a subject. The liquid cartridge is replaceably coupled to the device body and provides the liquid supply to the alcohol sensor.