Terminal Device Smell Sensor Magnetic Cavity Design
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Solution Overview
Problem
Existing smell sensors require a long detection time due to the need for smell molecules to become uniform and stable in the environment, leading to inaccurate test results.
Innovation Solution
A terminal device with a smell detection function that includes a smell sensor, an elastic piece deformable by a magnetic field, and a coil to create a small accommodating cavity for the smell sensor, enhancing the stability and speed of smell molecule detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If smell sensors detect smell molecules in a large environment, then the detection coverage is sufficient, but the detection time is long and accuracy is reduced
Solution Approach 1:
The device divides the detection environment into a small isolated cavity (accommodating cavity) separated from the external environment. This segmentation allows smell molecules to be concentrated in a confined space, enabling faster and more accurate detection by the smell sensor without requiring long waiting periods for molecular uniformity in a large space.
Solution Approach 2:
The patent changes the physical parameter of the detection space from a large open environment to a small confined cavity. This parameter change (volume reduction) directly impacts the detection process by increasing the concentration of smell molecules in the detection region, thereby reducing detection time and improving accuracy.
2Speed
If the accommodating cavity is made small to improve detection speed, then the response time improves, but the device complexity increases
Solution Approach 1:
The accommodating cavity is integrated within the existing device structure, nesting the detection cavity within the housing or body of the terminal device. This nesting approach allows the small cavity to be formed using existing structural elements, minimizing additional complexity while achieving fast response speed.
Solution Approach 2:
The cavity is formed using flexible sealing structures (such as elastic pieces or sealing films) that can create a密闭空间 without requiring complex rigid enclosures. This approach simplifies the structure while maintaining the small volume needed for fast detection response.
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 improves the detection accuracy and response speed of smell sensors by stabilizing smell molecules within a small cavity, reducing detection time and enhancing overall accuracy.
Implementation Method 1
an elastic piece deformable by a magnetic field, and a coil to create a small accommodating cavity
Implementation Method 2
Smell molecules 85 in the air can be absorbed and adhered on the smell sensor 20, causing a mass change of the smell sensor 20
Data Source
AI summary
A terminal device includes a body, a smell sensor, a housing, an elastic piece, and a coil. A groove is defined on the body, the groove has a bottom wall. The smell sensor is fixed to the bottom wall. The housing covers the groove. The elastic piece includes a fixing area and a deformable area disposed around the fixing area. The fixing area is fixed to the housing, the deformable area can be deformed relative to the fixing area. The coil can generate a magnetic field to deform the deformable area toward the bottom wall, causing the deformable area and the bottom wall to cooperatively form an accommodating cavity, the smell sensor can be accommodated in the accommodating cavity.