Inductive Circuit Sensor for Intrusion Detection

Sandia’s intrusion detection system uses inductive power transfer to reliably sense whether a barrier has been opened, closed, or breached relative to a stationary surface.

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Over the last forty years, balanced magnetic switching (BMS) has become the standard form of intrusion detection for secure sites throughout the United States. BMS systems rely on permanent magnets which can detect if a door has been opened or closed but not when it has been breached or penetrated. High security sites require enhanced forms of intrusion detection to supplement BMS systems. Alternative systems such as video analytics or passive infrared sensors perform best in static ambient conditions, which are difficult to maintain and frequently result in nuisance alarms. Due to its modular design, sensors can be placed in custom configurations within large or varied surface areas. This new approach can provide a more sophisticated form of intrusion detection for high-value assets in secure settings of all kinds.

  • Reliably detects open, close, and breach of barrier
  • Highly configurable, highly accurate sensor placement
  • Low-cost solution
  • May be customized for unique security barrier types and settings, ranging from large to small surface areas
  • Potential to add diagnostics for characterizing intrusion type and anti-spoofing
Applications and Industries
  • Intrusion detection for diverse articles
  • Asset protection
  • Security and defense
  • Infrastructure
  • Shipping and logistics
Technology ID

SD 15050



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