Cylindrical Lens Infrared Detection for 360° Cigarette Temperature
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Solution Overview
Problem
Current methods for detecting the temperature of cigarettes during production are inadequate, as they only partially detect the circumferential surface temperature of cylindrical cigarettes, leading to inconsistent smoking quality due to varying heater settings and heat transfer rates.
Innovation Solution
A cigarette temperature detection device using cylindrical convex lenses, a cylindrical grating, and an infrared detector to accurately measure the temperature across the entire 360° circumferential surface of a cigarette, ensuring consistent heat transfer and quality control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If planar imaging thermometer or point and shoot infrared temperature gun is used for manual detection, then the detection operation is simple, but the detection accuracy of the entire circumferential surface temperature is poor
Solution Approach 1:
The patent employs a cylindrical convex lens instead of traditional planar imaging components. The cylindrical lens focuses infrared radiation from the entire circumferential surface of the cylindrical cigarette onto a linear array detector, creating a curved focal surface that matches the cylindrical geometry of the detection target. This curvature-based approach enables accurate temperature measurement across the entire circumferential surface while maintaining a relatively simple optical system structure.
2Reliability
If only partial surface temperature detection is performed, then the detection device is simple, but the quality control consistency is poor
Solution Approach 1:
The patent transitions from point-based or partial surface temperature detection to full circumferential surface temperature detection by utilizing the cylindrical lens's ability to focus infrared radiation from all around the cigarette's circumference onto a linear detector array. This dimensional expansion from 0D/2D detection to 360° circumferential detection ensures comprehensive quality control while the linear array configuration keeps the system relatively compact.
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 device provides accurate and reliable temperature detection of the entire circumferential surface, ensuring stable and uniform cigarette quality by precisely controlling the heater settings, addressing the limitations of prior art methods.
Implementation Method 1
the cylindrical infrared detector D is located on a focus ring of the multiple cylindrical convex lenses... measuring, by the cylindrical infrared detector D of the cigarette temperature detection device, a temperature of an entire circumferential surface of a cigarette
Implementation Method 2
the cylindrical convex lenses, the cylindrical grating S, and the cylindrical infrared detector D are coaxial... the cylindrical infrared detector D is located on a focus ring of the multiple cylindrical convex lenses
Data Source
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AI summary
The present disclosure provides a cigarette temperature detection device. The cigarette temperature detection device includes multiple cylindrical convex lenses, where each of the cylindrical convex lenses has a thicker central wall between two thinner end walls formed by rotating a parallel line at a predetermined distance around a long axis of an elliptical-like section resulting from cutting the circular convex lens by a plane perpendicular to a centerline. The present disclosure realizes accurate and reliable detection of the temperature of an entire circumferential surface of a cigarette on site.