Magnetic Reader Object Identification via Field Profile Comparison
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Solution Overview
Problem
Conventional RFID technology for object identification is expensive, making it impractical for many applications, necessitating a cost-effective alternative for independent and accurate object identification.
Innovation Solution
Magnetic readers equipped with a hardware processor, memory, and magnetometers or magnetometers-based magnetic field detectors are used to detect and compare magnetic field profiles stored in the device, allowing for the identification of objects by analyzing the magnetic fields produced by embedded permanent magnets, capacitors, or induction coils.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RFID technology is used for object identification, then reliable identification can be achieved, but the cost becomes relatively expensive
Solution Approach 1:
The patent replaces the electromagnetic RF-based RFID system with a magnetic field-based detection system using magnetometers. This substitution uses a different physical principle (magnetic field detection versus electromagnetic radiation) to achieve object identification, thereby reducing cost while maintaining identification reliability through unique magnetic field profiles generated by embedded magnets.
Solution Approach 2:
The patent changes the identification parameter from electromagnetic RF signatures to magnetic field characteristics. By embedding permanent magnets in objects and detecting their unique magnetic field profiles using magnetometers, the system achieves reliable identification through a different physical parameter that is less expensive to implement than RFID infrastructure.
2Ease of manufacture
If magnetic field detection is used for object identification, then cost-effectiveness is improved, but measurement precision must be maintained
Solution Approach 1:
The system performs preliminary characterization of magnetic field profiles during the object creation or tagging phase. By pre-storing the unique magnetic field signature of each object in a database, the system ensures that subsequent measurements can be accurately compared against known references, maintaining measurement precision without requiring expensive real-time calibration equipment.
Solution Approach 2:
The patent creates a digital copy or profile of each object's magnetic field characteristics and stores it in a database. Instead of requiring complex real-time measurement and analysis equipment, the system uses these pre-captured magnetic field profiles for identification, thereby reducing hardware costs while maintaining accurate object recognition through comparison against stored reference data.
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 magnetic reader system provides a cost-effective means for object identification by accurately recognizing objects based on their unique magnetic field characteristics, offering a practical solution for applications where RFID is not feasible.
Implementation Method 1
the magnetic reader includes a magnetic field detector and is configured to detect a magnetic field produced by the one or more permanent magnets
Implementation Method 2
detect a magnetic field produced by the one or more permanent magnets incorporated into the object
Data Source
AI summary
A magnetic reader for identifying an object includes a hardware processor, a memory storing multiple magnetic field profiles, and a magnetic field detector. The hardware processor of the magnetic reader is configured to detect, using the magnetic field detector, a magnetic field produced by one or more elements incorporated into the object, and to measure, using the magnetic field detector, one or more characteristics of the magnetic field. The hardware processor of the magnetic reader is further configured to compare the one or more characteristics of the magnetic field to one or more of the multiple magnetic field profiles stored in the memory, and to identify the object based on the comparison.