Magnetic Reporting System Analog Coding

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Solution Overview

Problem

Existing magnetic reporting systems in security technology are vulnerable to sabotage as they rely on digital coding that is easily readable and reproducible, requiring a large space for sensors to detect polarity changes, making them susceptible to manipulation.

Innovation Solution

The magnetic element features an indexed receptacle for the source of the magnetic field, allowing for 8 different orientations, which are randomly selected during installation, using angle sensors to measure field orientation and strength, enabling an analog coding system that reduces space requirements and increases security.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If digital coding with series-mounted magnetic components is used, then coding can be easily read and reproduced, but the system requires relatively large space for sensors and reporting elements

Engineering Contradiction:
Improvecoding readabilityVSAvoidsensor space
Core Design Contradiction:
Ease of manufactureVSArea of stationary object

Solution Approach 1:

The patent transitions from digital coding (discrete pole changes) to analog coding (continuous magnetic field orientation). By changing the coding parameter from discrete polarity states to continuous angular orientation, the system achieves higher information density in a smaller space, eliminating the need for multiple widely-spaced sensors while maintaining coding complexity.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent introduces a new dimension for coding by using the orientation angle of the magnetic field in addition to field strength. This angular dimension allows a single sensor to capture multiple coding parameters simultaneously, replacing the need for multiple sensors spaced apart to detect pole changes in digital systems.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Loss of information

If digital coding with multiple pole changes is used, then coding information can be detected, but the sensors must be sufficiently far apart requiring relatively large space for the reporting element

Engineering Contradiction:
Improvecoding informationVSAvoidreporting element length
Core Design Contradiction:
Loss of informationVSLength of stationary object

Solution Approach 1:

The patent combines multiple coding functions into a single magnetic field source with variable orientation. Instead of requiring multiple sensors spaced apart to detect different pole changes, the analog system merges all coding information into one continuous field that a single sensor can measure at any position, eliminating the need for extended sensor arrays.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent makes the magnetic field source universal by enabling it to encode multiple pieces of information (orientation, strength, polarity) in a single field configuration. This multi-functional approach allows one sensor to perform what previously required multiple sensors, reducing the overall length of the reporting element.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Measurement precision

If the magnetic element requires relatively large space for digital coding, then all pole changes can be detected, but the system becomes less compact

Engineering Contradiction:
Improvepole change detectionVSAvoidmagnetic element volume
Core Design Contradiction:
Measurement precisionVSVolume of stationary object

Solution Approach 1:

The patent changes the magnetic coding from discrete digital states to continuous analog parameters (orientation and strength). This parameter transformation allows the magnetic element to be miniaturized while maintaining measurement precision, as the continuous field provides sufficient information density without requiring the physical space of multiple discrete poles.

Inventive Principle:
Principle #35Parameter changes

4Ease of operation

If conventional magnetic reporting systems are used, then simple field strength detection is possible, but the system is vulnerable to sabotage through easily reproducible digital coding

Engineering Contradiction:
Improvefield detectionVSAvoidsabotage resistance
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent enhances sabotage resistance by changing from simple digital field strength detection to multi-parameter analog measurement including orientation and strength. This creates a more complex authentication signature that is difficult to reproduce, as saboteurs must match both the magnitude and angular orientation of the magnetic field, significantly increasing the difficulty of successful spoofing attempts.

Inventive Principle:
Principle #35Parameter changes

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 approach enhances security by reducing the physical space needed for sensors and coding complexity, making it harder for saboteurs to manipulate the system, as the exact alignment and orientation of the magnetic field must be known and matched precisely, thereby increasing protection against sabotage.

Implementation Method 1

a magnetic element (4) which is arranged on an element which can be moved relative to the fixed element, the reporting element comprising a sensor unit and the magnetic element for generating a magnetic and/ or is designed electric field

Methodology Applied
Scientific EffectMagnetic field generation: Magnetism

Implementation Method 2

the sensor unit is designed to measure both the field strength and the orientation of the magnetic and/ or electric field in space

Methodology Applied
Scientific EffectMagnetic field detection: Hall Effect

Data Source

PatentEP2711905B1Reporting system
Publication Date: 2019.03.20 LINK GMBH
  • EP2711905B1 patent drawingFigure 1
  • EP2711905B1 patent drawingFigure 2
  • EP2711905B1 patent drawingFigure 3

AI summary

The signaling system (1) has a signaling element (2), which is mounted on or in a stationary element, and a magnet element (4), which is arranged on or in an element that is movable relative to the stationary element. The signaling element has a sensor unit, and the magnet element is designed for generating a magnetic- or electrical field. The sensor unit is formed to measure the field strength and the orientation of the magnetic- or electrical field in the space.