GATE SYSTEM FOR INVENTORY CONTROL AND THEFT PREVENTION

摘要

The present disclosure relates to a gate system which uses overlapping radiation patterns to deduce when an item is entering a warehouse and when an item is leaving a warehouse, for example, for loading onto a truck. The present disclosure stores information relating to the direction the item moved and actuates an alarm if the item is moved in an unexpected direction. The radiation patterns of the gates are angled such that one radiation pattern from a first antenna is directed towards the loading dock, while another radiation pattern from a second antenna is directed towards the interior of the building. Overlapping the radiation patterns allows the logic circuitry to account for the item as it moves from one side of the gate system to the other.

主权项

1. A method of tracking inventory, the method comprising the steps of:
providing a first antenna proximate an opening of a structure; providing a second antenna proximate the opening; emanating a signal from an item; moving the item past the first antenna and measuring a first signal strength of the signal as the item moves past the first antenna; determining a first time when the first signal strength peaks; moving the item past the second antenna and measuring a second signal strength of the signal as the item moves past the second antenna; determining a second time when the second signal strength peaks; and comparing the first time and the second time to determine an actual direction the item moved past the first antenna and second antenna, wherein if the first time is before the second time then the actual direction of the item is entering the structure through the opening, and wherein if the first time is after the second time then the actual direction of the item is exiting the structure through the opening; and providing the actual direction to an inventory tracking system.