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US 10,769,955 B2Granted
Proximity detection system and method and collision avoidance system and method using proximity detection
AssigneeStrata Safety Products, LLC
InventorsLarry D. Frederick, Paul Hammond
Life of this patent
Estimating the term…
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.
Claims18
A system, comprising:
- a hazardous machine;
- a magnetic field generator positioned at the hazardous machine adapted to generate a magnetic field;
- a worker alarm device configured to sense the magnetic field and generate a response signal;
- a hazardous machine alarm device associated with the magnetic field generator and adapted to receive the response signal;
- a switch on the worker alarm device that when triggered causes the worker alarm device to transmit a request from the worker alarm device to the magnetic field generator to designate the worker alarm device as an operator of the hazardous machine;
- wherein the worker alarm device is adapted to generate a worker alarm if it detects the strength of the magnetic field is above a predetermined threshold strength and the worker alarm device is not designated an operator of the hazardous machine and the worker alarm device is adapted to not generate an alarm if the worker alarm device is designated an operator of the hazardous machine.
3 more elements
A method of collision avoidance, the method comprising
- generating a magnetic field by a magnetic field generator associated with a hazardous machine;
- generating a response signal from a worker alarm;
- pressing a switch on the worker alarm device;
- transmitting a request from the worker alarm device to the magnetic field generator to designate the worker alarm device as an operator of the hazardous machine;
- designating the worker alarm device as an operator of the hazardous machine;
- and
- generating a worker alarm if the worker alarm device detects the strength of the magnetic field is above a predetermined threshold strength and the worker alarm device is not designated an operator of the hazardous machine and not generating a worker alarm if the worker alarm device is designated an operator of the hazardous machine;
- silencing the worker alarm if the response signal is from the designated worker alarm.
5 more elements
Dependencies are inferred from the claim text.