Protective Mesh THz Object Detection in Hot Contaminated Lines
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Solution Overview
Problem
Existing devices for detecting objects in manufacturing environments, particularly during tube production and plate processing, face challenges in providing reliable measurements due to contamination and high temperatures, which lead to inaccurate results and increased rejects.
Innovation Solution
A device with a protective mesh that is transparent to gigahertz or terahertz radiation and permeable to gas is used between the transmission and receiving apparatuses, protecting them from contaminants and heat while allowing measurement of object dimensions and contours, and includes a flushing system to maintain cleanliness and cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If transmission and receiving apparatuses are placed in the measuring region to measure object contours early in production, then measurement timing is improved (early detection), but the apparatuses are exposed to contaminants and high temperatures causing measurement disruptions
Solution Approach 1:
A protective mesh is introduced as an intermediary element between the transmission/receiving apparatuses and the harsh measuring environment. The mesh allows electromagnetic radiation to pass through for measurement while blocking contaminant particles and providing thermal protection, enabling early measurement without exposing the apparatuses to damaging conditions
Solution Approach 2:
The protective mesh functions as a thin film structure that is permeable to electromagnetic radiation but impermeable to contaminant particles. This thin film approach provides protection while maintaining measurement capability, allowing the apparatuses to operate in the measuring region without direct exposure to contaminants and heat
2Reliability
If protective measures are added to protect apparatuses from contaminants and heat, then reliability is improved, but device complexity increases
Solution Approach 1:
The protective mesh provides comprehensive protection (particle filtration and thermal insulation) through a single thin film element, avoiding the need for complex multi-layer protection systems or enclosed housings while maintaining apparatus reliability
Solution Approach 2:
The protective mesh utilizes a porous structure that is permeable to electromagnetic radiation wavelengths while being impermeable to larger contaminant particles. This porous design provides effective protection without requiring solid blocking materials that would complicate the device structure or interfere with 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
The solution enables reliable measurement results in harsh environments, minimizing rejects by protecting the apparatuses from contaminants and heat, and maintaining the accuracy of object dimension measurements.
Implementation Method 1
a transmission apparatus for emitting measuring radiation with a frequency in the gigahertz or terahertz range onto the outer contour of the object and a receiving apparatus for receiving the measuring radiation that is reflected from the object
Implementation Method 2
arranging a protective mesh, which is transparent for the measuring radiation and permeable for gas, between the transmission apparatus and/or the receiving apparatus on one side and the measuring region on the other side
Implementation Method 3
The invention also relates to a system, comprising the device according to the invention and the object to be detected
Data Source
AI summary
A device for detecting an object conveyed through a measuring region comprises a transmission apparatus configured to emit measuring radiation onto the outer contour of the object. The measuring radiation comprises a frequency in a range of one of gigahertz and terahertz. A protective mesh is positioned between the measuring region and at least one of the transmission apparatus and the receiving apparatus. The protective mesh is transparent for the measuring radiation and permeable to a gas.