Magnetic Sheet Layout for Stronger Pulse Signal Detection
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Solution Overview
Problem
Existing security papers with embedded magnetic wires face a trade-off between increasing pulse signal intensity for enhanced detection sensitivity and rising costs, as increasing the number of magnetic wires to enhance signal intensity also increases production costs.
Innovation Solution
A magnetic sheet design featuring line-shaped magnetic members arranged at specific angular intervals and rotation angles on a sheet, allowing for increased pulse signal intensity without the need for a large number of magnetic wires, thereby maintaining cost-effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of magnetic wires is increased to enhance pulse signal intensity, then detection sensitivity is improved, but production cost increases
Solution Approach 1:
The patent changes the angular parameters of magnetic wire arrangement from conventional uniform distribution to specific asymmetric angles (e.g., first set at angles α1, α2, ... αn and second set at angles β1, β2, ... βn where βi ≠ αi). This parameter optimization enhances pulse signal intensity through constructive magnetic field interference while using fewer wires, resolving the contradiction between detection sensitivity and cost.
Solution Approach 2:
The patent employs a composite arrangement of two sets of magnetic wires with different angular orientations on the same sheet. This composite structure creates synergistic magnetic field effects that amplify pulse signal intensity beyond what a single set of wires could achieve, improving detection sensitivity without proportionally increasing the number of wires.
2Power
If more magnetic wires are embedded in the sheet, then pulse signal intensity increases, but manufacturing cost increases
Solution Approach 1:
The patent optimizes the angular parameters of magnetic wire placement to achieve maximum pulse signal intensity with minimal wire count. By setting specific asymmetric angles for two sets of wires, the magnetic fields constructively interfere to amplify signal power, reducing the total number of wires needed and thereby lowering manufacturing cost.
Solution Approach 2:
The patent transitions from conventional single-direction or simple multi-directional wire arrangements to a two-set asymmetric angular distribution in the planar dimension. This dimensional reorganization of wire placement creates enhanced magnetic field interactions that increase pulse signal intensity without requiring additional wires in the vertical or other dimensions.
3Measurement precision
If the number of magnetic wires is increased to enhance detection sensitivity, then signal intensity improves, but the sheet flatness may be compromised
Solution Approach 1:
The patent uses optimized angular parameters for magnetic wire placement that achieve high pulse signal intensity with fewer wires. This reduction in wire count minimizes the physical disturbance to the sheet structure during embedding, thereby maintaining sheet flatness while still achieving enhanced detection sensitivity.
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 arrangement of magnetic members on the sheet enhances pulse signal intensity while maintaining a high degree of flatness and detectability, suppressing the need for excessive wire numbers and reducing production costs.
Implementation Method 1
When an alternating magnetic field having a predetermined frequency is applied to this type of paper, the magnetic wire embedded in the paper emits a steep pulse signal due to magnetization reversal.
Data Source
AI summary
A magnetic sheet includes a sheet, line-shaped N first magnetic members arranged on the sheet and having magnetic properties, and line-shaped N second magnetic members arranged on the sheet and having magnetic properties, where N denotes the number of the first magnetic members and denotes the number of the second magnetic members.