Indoor location and tracking system
AssigneeScott Technologies, Inc.
InventorBrian Davidson Wall
Life of this patent
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Abstract
A system, method and device for tracking at least one of objects, vehicles and personnel at a scene by determining a distance between a first node and a remote node are disclosed. In some embodiments, a method is provided for tracking emergency responders at an emergency incident scene by determining a distance between nodes positioned on the emergency responders and enabling mapping of the relative positions of the emergency responders.
Claims18
A method for tracking at least one of objects, vehicles and personnel at a scene by determining a distance between a first node and a remote node, the method comprising:
- transmitting a first signal from the first node, the first signal having a wavelength longer than a distance between the first node and the remote node;
- receiving at the first node a return signal received from the remote node;
- generating a second signal, the second signal having a frequency that is a multiple of a frequency of the first signal, the second signal being synchronized with the first signal and being phase-locked to the received return signal;
- comparing the second signal to the return signal to produce a distance determination signal that represents a distance between the first node and the remote node;
- and
- determining the distance between the first node and the second node based on the produced distance determination signal.
A first node for use in tracking at least one of objects, vehicles and personnel at a scene by determining a distance between the first node and a remote node the first node comprising:
- a transceiver configured to:
- transmit a first signal from the first node, the first signal having a wavelength longer than a distance between the first node and the remote node;
- and
- receive a return signal from the remote node;
- a signal generator configured to:
- generate the first signal;
- and
- generate a second signal, the second signal having a frequency that is a multiple of a frequency of the first signal, the second signal being synchronized with the first signal and being phase-locked to the received return signal;
- and
- processing circuitry including a memory and a processor:
- the memory configured to store a distance between the first node and the remote node;
- the processor configured to:
- compare the second signal to the received return signal to produce a distance determination signal that represents a distance between the first node and the remote node;
- and
- determine the distance between the first node and the remote node based on the produced distance determination signal.
A system deployable for use in tracking emergency responders at an emergency incident scene by determining a mapping of the positions of the emergency responders, the system comprising:
- a plurality of locator nodes distributable among a plurality of emergency responders, each locator node configured to determine its own position and distance from at least two other locator nodes, wherein each locater node includes:
- a transceiver configured to:
- transmit a first signal from a first node, the first signal having a wavelength longer than a distance between the first node and a remote node;
- and
- receive a return signal from the remote node;
- a signal generator configured to:
- generate the first signal;
- and
- generate a second signal, the second signal having a frequency that is a multiple of a frequency of the first signal, the second signal being synchronized with the first signal and being phase-locked to the received return signal;
- and
- processing circuitry including a memory and a processor:
- the memory configured to store a distance between the first node and the remote node;
- and
- the processor configured to:
- compare the second signal to the received return signal to produce a distance determination signal that represents a distance between the first node and the remote node;
- and
- determine the distance between the first node and the second node based on the produced distance determination signal;
- and
- at least one user interface configured to display a map of the positions of the locator nodes.
Dependencies are inferred from the claim text.