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US 11,790,784 B2Granted
Proximity detection system and method and collision avoidance system and method using proximity detection
AssigneeStrata Safety Products, LLC
InventorsLarry D. Frederick, Paul L. Hammond
Life of this patent
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Abstract
The invention relates to a complex proximity safety and warning system. The invention provides a safety system comprising a generator that generates a magnetic field that establishes a boundary, where the generator is capable of receiving radio frequency signals. Also provided is a radio frequency device that sends radio frequency signals, the radio frequency device being capable of sensing the magnetic field and generating a radio frequency response.
Claims20
A method of proximity detection, comprising:
- generating a first magnetic field and second magnetic field;
- determining a strength of the first and the second magnetic fields, respectively;
- generating an alarm if the strength of the first magnetic field is above a first predetermined threshold and the strength of the second magnetic field is not above a second predetermined threshold.
Dependencies are inferred from the claim text.