Reusable Hazardous Substance Detection Device with Interchangeable Cassettes
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Solution Overview
Problem
Existing hazardous substance detection devices are limited to detecting a single type of chemical, require multiple devices for different chemicals, and often malfunction in various environmental conditions such as water immersion.
Innovation Solution
A reusable chemical detection device with interchangeable cassettes, each equipped with a colorimetric sensor that changes color upon exposure to specific hazardous substances and a collection medium, allowing for detection of multiple substances and operating in diverse environmental conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single detection device is used for one type of chemical, then detection precision is improved, but device versatility deteriorates
Solution Approach 1:
The detection device is segmented into a reusable body and interchangeable cassettes. Each cassette is dedicated to detecting a specific chemical substance, maintaining high detection precision for that substance. The reusable body provides common functionality, while multiple specialized cassettes enable versatility across different chemical detections.
Solution Approach 2:
The reusable body serves as a universal platform that can accommodate multiple different cassettes. This allows a single device body to perform multiple detection functions by simply changing the cassette, achieving both precision (through specialized cassettes) and versatility (through the universal body).
2Measurement precision
If multiple detection devices are used for different chemicals, then detection precision for each chemical is improved, but device complexity deteriorates
Solution Approach 1:
Multiple detection functions are merged into a single device through the reusable body that can hold multiple cassettes. Instead of managing separate devices for different chemicals, users can combine multiple cassettes in one body or easily swap between them, reducing the number of devices needed while maintaining detection precision for each chemical.
Solution Approach 2:
The device configuration is made dynamic through interchangeable cassettes. Users can adapt the device setup based on detection needs by inserting or removing cassettes, allowing the same physical device to serve multiple chemical detection purposes without requiring multiple fixed-configuration devices.
3Measurement precision
If colorimetric badges are used for chemical detection, then detection capability is improved, but reliability in water immersion deteriorates
Solution Approach 1:
The cassette incorporates a waterproof membrane that acts as a protective barrier between the colorimetric sensor and the external environment. This membrane allows vapor-phase chemical detection while blocking liquid water, enabling the device to maintain detection capability while achieving reliability in water immersion conditions.
Solution Approach 2:
The waterproof membrane serves as an intermediary element between the colorimetric badge and the environment. It selectively permits certain substances (hazardous vapors) to reach the sensor while blocking others (liquid water), thus protecting the sensor's reliability without compromising detection capability.
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
Enables users to detect multiple hazardous substances simultaneously and withstands various environmental conditions, enhancing user safety and facilitating medical treatment by providing a versatile and reliable detection system.
Implementation Method 1
Each removable cassette is configured to detect the presence of at least one predetermined hazardous substance... includes at least one of a colorimetric sensor configured to detect the presence of at least one predetermined hazardous substance
Data Source
AI summary
An apparatus for detecting exposure to at least one hazardous substance is provided. The apparatus includes a body having a plurality of openings, and an attachment mechanism coupled to the body. Each opening is sized to receive a cassette for detecting the presence or absence of at least one hazardous substance. The cassette can include a colorimetric sensor having a base layer fabricated from a hydrophobic film, a colorimetric coating for covering the hydrophobic film, and at least one hydrophobic membrane for controlling the exposure of the specific substance to the colorimetric coating.