Continuous Indicator Strip for Automated Liquid Testing
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Solution Overview
Problem
Manual testing with discrete indicator strips is laborious and unreliable for frequent sequential testing of liquids, particularly in applications requiring continuous monitoring around the clock, as per government regulations.
Innovation Solution
A continuous indicator strip with multiple sequential test sections, integrated with a dispenser, solenoid-operated valve, electro-optical sensor, and controller unit for automated testing, allowing for frequent, automated chemical testing of liquids without human intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual testing with discrete indicator strips is used, then testing can be performed with simple equipment, but testing frequency and reliability deteriorate when frequent sequential testing is required
Solution Approach 1:
The indicator strip is divided into multiple separate test sections (at least 20) along its length, each capable of independent testing. This segmentation allows the strip to perform multiple sequential tests automatically as it passes through the testing device, dramatically increasing testing frequency without requiring proportionally more complex equipment
Solution Approach 2:
The continuous indicator strip enables uninterrupted sequential testing as it moves through the device. Multiple test sections are continuously exposed to liquid samples in sequence, eliminating the need to manually replace discrete strips between tests. This continuous action maintains high productivity while keeping the device relatively simple
2Reliability
If manual testing with discrete indicator strips is used, then equipment simplicity is maintained, but operational reliability deteriorates for frequent tests
Solution Approach 1:
By dividing the continuous strip into multiple test sections, each section can be independently validated for proper indicator impregnation and functionality. This segmentation allows for quality control at the section level, ensuring reliable results across frequent tests without requiring complex validation equipment
Solution Approach 2:
The continuous indicator strip with multiple test sections performs self-validation through its design. As the strip moves through the testing device, each section undergoes the same testing process automatically, providing inherent reliability through repetition without requiring additional complex monitoring systems
3Loss of time
If discrete indicator strips are used for frequent testing, then manual operation simplicity is maintained, but time consumption increases
Solution Approach 1:
The continuous indicator strip enables multiple tests to be performed in an uninterrupted sequence as the strip moves through the device. This eliminates the time lost in manually replacing discrete strips between tests, reducing total time per test cycle while requiring only simple loading and take-up operations
Solution Approach 2:
Multiple test sections are pre-prepared on the continuous strip before testing begins. This preliminary preparation of multiple test sections eliminates the need for manual preparation and replacement during the testing sequence, significantly reducing time consumption while maintaining operational simplicity
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 continuous, automated monitoring of liquid chemical characteristics, ensuring compliance with standards and regulations by detecting substance levels accurately and reliably, even in the absence of a human operator.
Implementation Method 1
the color changes seen in the tape are indicative that such chemical is or is not present above a predefined level
Implementation Method 2
a continuous indicator strip having a multiplicity of separate individual sequential test sections along the surface thereof, wherein a plurality of said test sections are impregnated with the same indicator
Data Source
AI summary
A continuous indicator strip having a multiplicity of separate individual sequential test sections along the surface thereof, wherein a plurality of test sections are impregnated with the same indicator enabling the utilization of the strip for sequential repetitive testing of samples, the strip being provided with at least 20 such test sections.