Alarm for security tag
AssigneeRF Technologies, Inc.
InventorsWyndham F. Gary, Jr., Jeff Krueger, John LaBorde
Life of this patent
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Abstract
A security system can include a tag unit adapted to be secured to an infant via band. The first tag unit can include a temperature sensor, and a capacitance sensor. A temperature alarm can be provided in response to a negative slope of a temperature curve associated with temperature data from the temperature sensor. A capacitance alarm can be provided in response to a comparison to capacitance data from the capacitance sensor to a baseline when the tag unit is not secured to the infant. A resistance alarm can be provided in response to resistance data indicating a spike in resistance followed by a relatively flat line response.
Claims20
An infant security system, comprising:
- a tag unit adapted to be secured to an infant via a band, the tag unit including a temperature sensor, and a capacitance sensor,
- wherein a temperature alarm is provided in response to a negative slope of a temperature curve associated with temperature data from the temperature sensor, a capacitance alarm is provided in response to a comparison of capacitance data from the capacitance sensor to a baseline when the tag unit is not secured to the infant, and a resistance alarm is provided in response to resistance data indicating a spike in resistance followed by a relatively flat line response.
A tag for securing to a person via a band, the tag comprising:
- control circuitry receiving a temperature signal from a temperature sensitive component, a capacitance signal from a capacitive element and a resistance signal associated with the band,
- wherein the control circuitry provides at least one of a temperature alarm in response to a negative slope of a temperature curve associated with the temperature signal, a capacitance alarm in response to a comparison of the capacitance signal associated with the capacitive element to a baseline, and a resistance alarm in response to the resistance signal having a spike followed by a relatively flat line response.
A method of determining a security alarm indication that a tag has been removed form a person, the tag being secured to the person using a band, the method comprising:
- providing a temperature signal associated with a temperature of the tag;
- providing a capacitance signal associated with a capacitive element of the tag;
- providing a resistance signal associated with a resistance across the band;
- and
- providing the security alarm in response to at least one of a negative slope of a temperature curve associated with the temperature signal, in response to a comparison of the capacitance signal to a baseline when the tag unit is not secured to the person, and in response to the resistance signal indicating a spike in resistance followed by a relatively flat line response.
A tag unit in a security system, the tag unit being secured to a human, the tag unit comprising:
- a strip of band material having a width of approximately 0.56 inches and a thickness of approximately 0.06 inches, the band material being woven material and being able to withstand a static force of at least 30 pounds without tearing, the band material having a resistance of 110 ohms per quarter inch of stretch;
- a temperature sensor,
- a capacitance sensor;
- and
- wherein a temperature alarm is provided in response to a negative slope of a temperature curve associated with temperature data from the temperature sensor, a capacitance alarm is provided in response to a comparison of capacitance data from the capacitance sensor to a baseline when the tag unit is not secured to the human, and a resistance alarm is provided in response to resistance data indicating a spike in the resistance of the band material followed by a relatively flat line response.
Dependencies are inferred from the claim text.