Exhalation Measuring Device Drying Mode Controller
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional exhalation measuring devices suffer from low detection accuracy due to condensation issues within the device, particularly when outside air temperature is low, leading to inconsistent exhalation supply and reduced measurement precision.
Innovation Solution
The device incorporates a controller that executes a drying mode after measurement, where the pump is driven to draw in outside air, reducing condensation accumulation by bypassing the chamber and directly ventilating the tube, thereby maintaining consistent exhalation supply and enhancing detection accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a ventilation fan is installed to dry condensation in the tube, then condensation can be removed, but the system becomes more complex and requires user intervention that may be forgotten
Solution Approach 1:
The system automatically executes the drying mode without requiring user intervention. The controller autonomously controls the pump to draw outside air through the tube after measurement, eliminating the need for a ventilation fan and user-activated switch while still removing condensation effectively
Solution Approach 2:
The drying mode is automatically executed after measurement to prevent condensation accumulation before it affects subsequent measurements. This preliminary action ensures the tube is dried proactively, maintaining measurement accuracy without requiring user awareness or intervention
2Measurement precision
If exhalation is held in a chamber and supplied by pump, then measurement can be performed, but condensation accumulates downstream from handle component reducing accuracy
Solution Approach 1:
The pump continues to operate after measurement in a drying mode, continuously drawing outside air through the tube to remove condensation. This continuous action ensures the system remains dry and ready for the next measurement, maintaining precision without interrupting the measurement workflow
Solution Approach 2:
The system discards the condensation that accumulates in the tube by drawing outside air through it during the drying mode. This removes the harmful condensation while recovering the measurement capability, ensuring consistent accuracy across multiple measurements
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
This solution significantly improves detection accuracy by minimizing condensation within the device, ensuring consistent exhalation supply and precise measurements, even in low-temperature conditions.
Implementation Method 1
the controller executes a drying mode in which the pump is driven and outside air is drawn in from the handle component... less condensation accumulates downstream from the handle component
Data Source
AI summary
This exhalation measuring device is provided with a handle component, a chamber, a piezoelectric pump, and a drying mode controller. Exhalation is blown into the handle component. The chamber temporarily holds the exhalation that has been blown in. The piezoelectric pump supplies the exhalation held in the chamber to a measurement component. The dry mode controller executes a drying mode in which the piezoelectric pump is driven and outside air is drawn in from the handle component, after the measurement of exhalation by the measurement component.