IoT Theft Detection Antenna Layout Against Signal Shielding
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Solution Overview
Problem
Existing IoT devices attached to user equipment for theft detection are easily shielded by thieves, rendering them ineffective due to their compact design and small antenna area, which can be obstructed by aluminum foil or similar materials, leading to undetected thefts.
Innovation Solution
Enhance the effective antenna area of IoT devices by integrating an interface to connect external antennas or using user equipment components as antennas, and implement a hierarchical master/slave structure with multiple IoT devices to ensure alarm signals can be transmitted even if one is obstructed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the IoT device is made compact for easy installation and retrofitting, then the ease of operation and installation is improved, but the antenna area is reduced making it vulnerable to shielding
Solution Approach 1:
The patent extends the antenna functionality from a compact three-dimensional structure to a two-dimensional surface by utilizing the back cover of the user equipment as an antenna surface. This dimensional transformation allows the antenna area to be significantly increased while keeping the IoT device itself compact and easy to install.
Solution Approach 2:
The back cover of the user equipment serves dual functions: it acts as both a protective/esthetic component of the user equipment and as an antenna surface for the IoT device. This multi-functionality increases the antenna area without adding separate components or complicating the installation process.
2Volume of moving object
If the IoT device uses a small built-in antenna for compactness, then the device size is reduced, but the reliability of signal transmission is worsened due to easy shielding
Solution Approach 1:
The patent transforms the antenna from a small three-dimensional built-in structure to a two-dimensional surface integrated with the user equipment's back cover. This dimensional change significantly increases the antenna area while keeping the IoT device compact, thereby maintaining signal transmission reliability even when the device is partially shielded.
Solution Approach 2:
The patent merges the antenna function with the back cover of the user equipment. Instead of relying solely on a small built-in antenna, the back cover itself becomes part of the antenna system, creating a combined structure that provides both device compactness and reliable signal transmission through increased effective antenna area.
3Object-affected harmful factors
If the IoT device is shielded by aluminum foil to prevent detection, then the harmful factor of detection is reduced, but the loss of information about theft occurs
Solution Approach 1:
The patent implements preliminary detection mechanisms that monitor signal characteristics before complete shielding can occur. By detecting abrupt changes in signal strength or patterns, the system can identify shielding attempts and trigger alarm signals before the thief can successfully block all communication, thereby preventing information loss about the theft.
Solution Approach 2:
The patent employs feedback mechanisms where the IoT device continuously monitors its own signal transmission and reception characteristics. When abnormal patterns indicating shielding are detected, the system provides feedback to trigger alarm signals or alternative communication methods, ensuring that theft information is not lost even if the primary communication channel is blocked.
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 enhanced antenna area and hierarchical structure prevent easy shielding, allowing continuous detection of unauthorized actions and timely transmission of alarm signals, reducing false alarms and ensuring effective theft prevention.
Implementation Method 1
The IoT-Device can send or receive signals via the communication network... The effective antenna area is basically represented by the effective surface that can be used to transmit and to send radio signals
Data Source
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AI summary
The invention relates to a method, a device and a communication system for detecting an alarm case, in particular a theft, of a user equipment in a communication system comprising the following steps: Attaching an loT-Device to a user equipment, wherein the loT-Device is configured to detect unauthorized actions; Setting up a communication connection between the loT-Device and a communication network; Triggering of an alarm signal in case of an unauthorized action on the loT-Device and/or the user device, Transmission of the alarm signal via the communication network to a server connected to the communication network, Increasing an effective antenna area of the loT-Device compared to an original effective antenna area of the loT-Device.