Dual-Use Transformer Security Device for Retail Theft Deterrence
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Solution Overview
Problem
Retail stores face challenges in protecting diverse merchandise items with a 'one size fits all' approach, leading to increased costs and reduced effectiveness in theft deterrence, as existing security devices lack adaptability and multi-functional capabilities.
Innovation Solution
A security device with a dual-function transformer that drives an alarm and receives a verification code via wireless transmission, allowing for secure attachment, locking, and remote authorization, minimizing additional components and costs while enhancing functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single transformer is used to drive both the alarm assembly and receive wireless signals, then device complexity and cost are reduced, but the reliability of signal reception and alarm activation may be compromised
Solution Approach 1:
The transformer is designed to perform multiple functions: driving the alarm assembly and receiving wireless signals. This multi-functionality reduces the overall number of components needed in the security device, thereby reducing device complexity and cost while maintaining operational effectiveness
2Reliability
If the transformer operates at high power to drive the alarm assembly, then alarm activation reliability is improved, but the transformer's ability to receive wireless signals may be compromised
Solution Approach 1:
The transformer operates in alternating periods: during some periods it drives the alarm assembly at high power, and during other periods it receives wireless signals. This periodic operation allows the transformer to fulfill both functions without simultaneous interference, maintaining both alarm reliability and signal reception capability
Solution Approach 2:
A control circuit acts as an intermediary between the alarm assembly driver and the wireless signal receiver. The control circuit manages the transformer's operation by selectively activating either the alarm driver or the wireless signal reception mode, preventing harmful interference between the two functions while ensuring both operate reliably
3Reliability
If the security device uses multiple specialized components for alarm and wireless reception, then functional reliability is improved, but device cost and complexity increase
Solution Approach 1:
The alarm assembly driver and wireless signal receiver are merged into a single transformer component. This merging reduces the total number of components in the system, lowering device complexity and cost, while the control circuit ensures that functional reliability is maintained through proper coordination of the combined functions
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 security device effectively deters theft by ensuring proper removal of the device from merchandise through alarm activation and remote authorization, reducing costs and improving adaptability across various merchandise types.
Implementation Method 1
a transformer configured to drive an alarm assembly to generate an alarm
Implementation Method 2
The transformer may be further configured to operate as a wireless receiver to receive a remotely transmitted wireless signal
Implementation Method 3
the alarm assembly comprises a piezo sounder
Data Source
AI summary
A security device may include an attachment assembly configured to affix the security device to an object, a locking assembly configured to lockably secure the attachment assembly and configured to transition between at least a locked state and an unlocked state, a transformer configured to drive an alarm assembly to generate an alarm, and processing circuitry. The transformer may be further configured to operate as a wireless receiver to receive a remotely transmitted wireless signal. The processing circuitry may be configured to monitor an output of the transformer to determine whether the wireless signal has been received via the transformer, and selectively activate the transformer to drive the alarm assembly to generate the alarm.