Antenna Array Deactivating Tags via Rotating Sector Activation
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Solution Overview
Problem
Retail stores face challenges in deactivating security tags on items to prevent alarms from activating during purchase, as existing methods may not ensure all tags are deactivated efficiently, leading to potential false alarms and customer inconvenience.
Innovation Solution
An electronic device with strategically positioned and oriented antennas that detect the location of objects and activate/deactivate antennas in a controlled manner to maximize power output while adhering to regulatory limits, ensuring tags are deactivated as items are removed from the store.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all antennas are activated simultaneously to ensure complete tag deactivation coverage, then tag deactivation reliability is improved, but energy consumption increases and regulatory power limits may be exceeded
Solution Approach 1:
The patent divides the antenna system into multiple groups that are activated sequentially rather than simultaneously. Each group covers a specific spatial sector, and the system rotates through different groups to provide complete coverage over time. This segmentation allows the system to maintain reliable tag deactivation while reducing instantaneous power consumption and staying within regulatory limits.
Solution Approach 2:
The patent implements periodic activation of antenna groups in a rotating sequence. Instead of continuous full-power activation, the system cycles through different antenna groups at predetermined intervals, providing comprehensive coverage over time while averaging down the power consumption and regulatory compliance.
2Loss of energy
If antenna groups are activated sequentially to reduce power consumption, then energy efficiency is improved, but tag deactivation completeness may be compromised
Solution Approach 1:
The patent adds the time dimension to the antenna activation strategy. By activating different antenna groups at different time intervals in a rotating sequence, the system achieves complete spatial coverage over time while maintaining energy efficiency. Objects passing through the detection area are exposed to multiple antenna groups sequentially, ensuring complete tag deactivation without requiring simultaneous full-power activation.
3Area of stationary object
If multiple antenna groups are used to cover different locations, then detection coverage is improved, but device complexity increases
Solution Approach 1:
The patent designs the antenna groups to be functionally equivalent and interchangeable, with each group capable of performing the same tag deactivation function in its designated sector. The control system uses a standardized rotating activation pattern that applies to any number of antenna groups, making the system scalable without proportionally increasing complexity. This multi-functionality approach allows extensive coverage area while managing device complexity through modular design.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively deactivates security tags without triggering alarms, enhancing the efficiency of the checkout process and reducing false alarms, thereby improving customer satisfaction and operational efficiency.
Implementation Method 1
the antennas are configured to transmit signals and/or fields when activated
Data Source
AI summary
This disclosure describes, in part, devices and methods for deactivating tags. For instance, an electronic device may include antennas that transmit signals and/or fields for deactivating the tags. In some examples, the electronic device includes a first gate that includes a first portion of the antennas and a second gate that includes a second portion of the antennas. To deactivate the tags, the electronic device may detect locations of an object relative to the electronic device. The electronic device may then activate a respective tag and/or a respective group of tags based on the location of the object. For example, the electronic device may activate a first tag and/or a first group of tags when the object is at a first location, activate a second tag and/or a second group of tags when the object is at a second location, and/or so forth.