Lateral Coil Metal Sheet Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing metal sheet detection devices in industrial environments are complex, unreliable, and require precise positioning, leading to inefficiencies and potential malfunctions due to the need for sheets to pass between coils, which slows down processing and is bulkier in design.
Innovation Solution
A double sheet detection device with emission and reception coils positioned at an inclination to each other, allowing detection through the edges of metal sheets without needing them to pass between coils, using the change in amplitude and power of the voltage signal to determine the presence and number of sheets, enabling reliable detection without modifying the sheet movement path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sheets are made to pass between opposite coils for detection, then detection reliability is improved, but processing speed deteriorates due to slowed movement and additional positioning requirements
Solution Approach 1:
Instead of positioning coils opposite to each other and requiring sheets to pass between them, the invention inverts the arrangement by positioning coils laterally adjacent to each other. This allows detection to occur as sheets move naturally along the conveyor without requiring precise positioning between opposite coils, thereby maintaining detection reliability while improving processing speed.
2Measurement precision
If opposite coil configuration is used for detection, then detection accuracy is improved, but device bulk increases due to larger spatial requirements
Solution Approach 1:
The invention transitions from a one-dimensional opposite coil arrangement (requiring significant spacing between coils) to a two-dimensional lateral configuration where coils are positioned side-by-side. This dimensional change reduces the spatial footprint of the device while maintaining the magnetic field interaction necessary for accurate detection.
3Reliability
If precise positioning is required for sheet passage between coils, then detection reliability is improved, but device complexity increases due to additional positioning mechanisms
Solution Approach 1:
The invention extracts and eliminates the complex positioning mechanisms required in opposite coil configurations. By adopting a lateral coil arrangement, the system leverages the natural movement of sheets along the conveyor, removing the need for additional positioning devices while maintaining detection reliability.
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 allows for efficient and reliable detection of metal sheets, enabling smooth movement and processing without the need for precise positioning, reducing bulk and improving operational efficiency by using the edge presence for detection, thus overcoming the limitations of existing technologies.
Implementation Method 1
a reception or receiving coil placed so as to make possible the generation by induction of a voltage at the terminals of said coil under the action of the aforementioned magnetic field
Implementation Method 2
the magnetic coupling between the two coils is changed by the presence of one or more nearby metal elements
Data Source
AI summary
A device for detecting metal elements in slab form such as metal plates or sheets, includes an emission coil powered by suitable control elements and generating a magnetic field, a reception coil placed so as to enable generation via induction of a voltage across the terminals of the coil under the action of the magnetic field, and elements for processing and evaluating the voltage signal delivered by the at least one reception coil, enabling delivery of an information signal indicating the absence or presence of one or more metal elements near the coils. The emission coil (3) and the reception coil (5) are both mounted in a housing or a sensor head having an active detection face having an associated detection region, and are positioned at a defined inclination one relative to the other and relative to the face.