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HOME : ABOUT ARNOLD : SERVED MARKETS : SECURITY SYSTEMS
Market Segment Discussion
Prevention of theft has become a major industry whether it be to deal with theft of books from a library, clothing or goods from a store or equipment from the workplace.
Anti-theft tagging, generally referred to as Electronic Article Surveillance or EAS, is widely employed to reduce theft. Technologies utilizing radio frequencies to interact with "tags" on merchandise have steadily improved. Today, there are four methods used:
 Swept-RF (also called Radio-Frequency) tags use an "antenna" in the tag to reradiate a signal which is then detected by a receiver.
Acousto-Magnetic uses a combination of permanent and soft magnetic material which transmits based on a pulsed electromagnetic field which stimulates it.
Electromagnetic: found mostly in Europe.
Microwave: the oldest source-tagging technology.
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Quality and Environmental Management Systems
As evidence of our commitment to the security industry and to continuous improvement, ISO 9001, ISO 9002 and QS 9000 certification have been achieved and selected manufacturing locations have also been certified under ISO 14001 for environmental compliance.
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| Applications Engineering |
Whether your company has sophisticated in-house magnetics design capabilities or a more modest facility, our Applications Engineers are ready to support your efforts through the entire product life cycle including:
• Conceptualization
• Initial design
• Prototyping
• Design optimization
• Pre-Production trials
• Validation testing support
• Production issues
• Cost reduction activities
• Next generation designs
Additional capabilities:
• Magnetic field mapping
• Magnetic properties testing
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| Design Assistance |
Applications engineers at each of our manufacturing locations and at our world class Magnetics Technology Center in Marengo, Illinois (near Chicago), offer comprehensive design assistance.
- Magnetic modeling: 2D, Radially symmetric, 3D, Temperature dependence
- Design relationships to your Hall sensor and application Specifications
Complete analysis includes studying the effects of the operate and release point of the Hall sensors compard to the magnetic output waveform
- Quadrature encoders
- Switches and latches
- Ratiometric / Linear Halls
- Pulse counters
- Complex holding force calculations
- Insert and overmolding designs
- Manufacturability analysis
- Measurement capability to verify design
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| Magnetic Prototyping, Testing and Training |
Extensive magnetic prototyping and testing capabilities are available at the manufacturing locations and at our Magnetics Technology Center in Marengo, Illinois, USA.
Seminars in Magnetics are also available either at the Technology Center or at your company location. These classes are tailored to satisfy your needs, whether for inexperienced, non-technical persons or your most expert designers.
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| Boundary and Finite Element Analysis (BEA, FEA) |
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Complex devices can be modeled using boundary or finite element analysis.
Magnetic circuit analysis is routinely performed to optimize a design. Diligent application of these techniques can lead to beneficial innovations.
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| Application Example |
EAS tagging of products can be accomplished at speeds of 1,200 to 1,400 per minute. Source tages are fed on continuous rolls through tag application equipment.
Most tags were originally applied to the outside of packaging. Increasingly the tags are placed inside the packages or directly on the product where they are more difficult to detect and remove. Tags can be activated and deactivated using equipment designed by the manufacturer.
Newer tagging systems are also being used for tracking product through manufacture, distribution and to the sales floor. The product identifying bar code is sometimes printed on the EAS tag as in the example illustrated here.
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