What changes occur in the electromotive force when a magnetic sheet is attached?
If metal is installed near an RFID card, the electromotive force generated in the card's circuit by the external primary coil is significantly reduced due to the demagnetizing effect from the metal. To suppress this demagnetizing effect, we analyzed the changes in electromotive force when a magnetic sheet is attached to the card's surface using Photo-Eddyjω. For more details, please download the catalog.
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basic information
【Features】 ○ Material properties (Air) Relative permeability 1 Electrical conductivity 0 ○ Material properties (PET) Relative permeability 1 Electrical conductivity 0 ○ Material properties (Copper wire) Relative permeability 1 Electrical conductivity 1e+6 ○ Material properties (Metal) Relative permeability 1 Electrical conductivity 1e+6 ○ Material properties (Magnetic sheet) Relative permeability 30 Electrical conductivity 0 ○ Input conditions: → Set a current of 50mA at a frequency of 13.56MHz in the primary coil on the reader/writer side. Position the initial location of the primary coil on the reader/writer side at -1.05m in the X direction from the center position of the RFID card. Move the primary coil on the reader/writer side at a speed of +15cm/sec and conduct analysis for 7 seconds at 1-second intervals until reaching the center position of the RFID card. For comparison, analysis was conducted for the following three patterns. - Case 1: No metal near the card, no magnetic sheet - Case 2: Metal near the card, no magnetic sheet - Case 3: Metal near the card, with magnetic sheet ● For more details, please contact us or download the catalog.
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Company information
At Photon, we are developing "electromagnetic field analysis software" that models and simulates products and components utilizing electromagnetic phenomena on computers. In traditional design and development environments, the process has primarily revolved around trial and error through prototypes based on the experience of engineers and experiments with those prototypes. However, conducting experiments with actual prototypes and analyzing the results requires significant time and cost. Moving forward, transitioning from an experimental and prototype-based approach to an analysis-based design is a critical issue for improving productivity, and establishing simulation technology as the core of analysis-based design techniques is a challenge. In this context, Photon is developing and providing "analysis software" focusing on electromagnetic fields, as well as heat, vibration, and sound fields. By utilizing Photon’s software, efficient development and design of various industrial products can be achieved. In this way, Photon aims to reduce the number of prototypes and development costs, shorten development periods in the manufacturing sites of our users, and ultimately support the enhancement of our users' competitiveness.
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