Wireless Security System with Detachable Units for Theft Detection
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Solution Overview
Problem
Existing security systems for preventing theft in unstructured or publicly accessible regions, such as department stores and luggage compartments, are ineffective due to the need for extensive detector unit coverage, which is costly and impractical, especially for mobile sales stands and buses where goods or luggage are often unattended.
Innovation Solution
A wireless security system comprising a central unit and detachable security units that communicate via a wireless connection to define a security zone, allowing for real-time detection of the unit's presence within this zone and immediate alarm generation if it is outside, eliminating the need for physical delimitation of the secured area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If detector units are arranged at exits of sales regions to detect anti-theft devices, then theft prevention at defined exits is achieved, but detection outside the detection range is not possible and extensive coverage is required
Solution Approach 1:
The patent replaces the mechanical/detector-based system with a wireless communication system. Instead of using detector units that physically detect anti-theft devices at exits, the system uses wireless status enquiry signals to communicate with security units attached to goods. The central unit sends wireless enquiry signals, and security units respond with their status, enabling detection anywhere within wireless range without requiring physical detector infrastructure at exits.
Solution Approach 2:
The security unit serves multiple functions: it acts as both the anti-theft device attached to goods and the detector/respondent in the security system. The single security unit integrates the functions of traditional detector units and anti-theft tags, eliminating the need for separate detector infrastructure and enabling universal monitoring throughout the sales region.
2Reliability
If the entire region is covered with detector units to ensure effective protection, then detection capability is improved, but cost and structural feasibility deteriorate
Solution Approach 1:
The patent replaces the extensive mechanical detector unit infrastructure with a wireless communication system. The central unit communicates wirelessly with security units attached to individual goods, eliminating the need for physical detector coverage throughout the region. This reduces both cost and structural complexity while maintaining detection capability.
Solution Approach 2:
Instead of deploying physical detector units throughout the region, the system uses wireless signal copying/communication. The central unit's status enquiry signal is wirelessly transmitted and received by security units anywhere in the region, creating a virtual presence without physical infrastructure replication.
3Reliability
If detector units are used in unstructured regions without defined exits, then structural delimitation is provided, but the system becomes impractical and expensive
Solution Approach 1:
The patent introduces dynamic wireless communication that adapts to the movement of goods and security units. The central unit continuously sends status enquiry signals, and security units respond based on their current location and status. This dynamic system works effectively in unstructured regions without defined exits, as it doesn't rely on fixed detector positions but rather on wireless communication between the central unit and moving security units.
Solution Approach 2:
The patent replaces the static mechanical detector unit system with a dynamic wireless communication system. Instead of requiring fixed detector positions at exits or throughout the region, the wireless system enables flexible monitoring of moving goods anywhere in the unstructured region, greatly improving practicality.
Data Source
AI summary
The invention relates to a security system designed to recognise, by means of the presence and/or content of a status enquiry signal of at least one security unit, whether or not at least one security unit is located inside the security zone. The security system includes an alarm generating unit which is designed to generate an alarm signal if it has been recognised that the at least one security unit is located outside the security zone. The invention further relates to a method for emitting an alarm signal, a bus with a security system and a use of a security system.