Patent ID: 9615545
Date: 2017-04-11
CPC Classifications: A01K,G08B,H04W

Claim:
1. A wireless boundary system for tracking a location of a movable entity in a user-defined area comprising: a master base unit including a transceiver unit and at least a first slave base unit, a second slave base unit and a third slave base unit, each of said slave base units having a transceiver unit, said master base unit and said slave base units being positioned in spaced relationship to one another; a master base unit activating mechanism for activating the master base unit during a system topology set-up stage to initiate a communication sequence between the master base unit and the slave base units during which respective distances and spatial relationships between the master base unit and the slave base units are determined and placed on a predefined planar coordinate system in which said distances and spatial relationships are identified by respective coordinates within said planar coordinate system to define an overall base unit topology; a set-up trackable device configured to communicate with the master base unit and the slave base units during a boundary set-up stage during which said base units track consecutive positions of the set-up trackable device as the set-up trackable device is moved around a user-defined perimeter that surrounds and defines the user-defined area; and a movable entity trackable device movable with said movable entity, said movable entity trackable device including a transceiver unit in signal communication with the transceiver units of said master base unit and said slave base units, each of said base units being configured to continuously obtain distance values between itself and the movable entity on a real time basis using said transceiver units and to communicate said distance values to the master base unit for calculation of a tracking location value indicating a location of the movable entity within the planar coordinate system.