Wireless RFID Perimeter Detection System
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Solution Overview
Problem
Current perimeter security systems face challenges such as high installation costs, sensitivity loss due to UV radiation, induction risks during storms, and exacting repairs, particularly with traditional sensor cables and microwave barriers, which are inappropriate for adjustable and rugged perimeters.
Innovation Solution
A system comprising at least two detectors with communication and hardware control units, equipped with omnidirectional antennas and connected via wireless links to external computer or monitoring technology, which evaluates changes in radio signal intensity to detect intruders without physical contact, using sensors for position, impact, temperature, and sound detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sensor cables are used for perimeter detection, then detection coverage is achieved, but installation costs and complexity increase due to cabling requirements
Solution Approach 1:
The patent replaces the mechanical sensor cable system with a wireless detection system using RFID tags and readers. The RFID tags are attached to fence elements without requiring complex cabling, and the readers wirelessly detect their presence and status, thereby maintaining detection coverage while significantly reducing installation complexity.
Solution Approach 2:
The RFID system serves multiple functions: it detects the presence of fence elements, monitors their positional status (erected or lowered), and provides intrusion detection capabilities. This multi-functionality replaces the need for separate sensor cables while maintaining comprehensive detection coverage.
2Reliability
If sensor cables are installed around the perimeter, then continuous detection zone is created, but detection interruptions occur at entry points
Solution Approach 1:
The wireless RFID system eliminates the physical cable continuity requirement. RFID tags can be attached to movable fence sections and gates, allowing these elements to be opened or lowered for entry while the wireless detection system continues to monitor their status without interruption.
3Reliability
If long sensor cables are used for perimeter detection, then complete coverage is achieved, but service life decreases due to UV radiation damage
Solution Approach 1:
The patent replaces the UV-sensitive sensor cable with UV-resistant RFID tags and readers. These electronic components are not affected by UV radiation in the same way, thereby maintaining detection coverage while significantly extending the service life of the detection system.
4Reliability
If sensor cables are deployed around the perimeter, then detection capability is provided, but storm damage risk increases due to induction of atmospheric energy
Solution Approach 1:
The wireless RFID system eliminates the long cable runs that act as antennas for atmospheric discharge induction. The RFID tags and readers use short-range wireless communication, significantly reducing the risk of storm damage while maintaining detection capability.
5Reliability
If microwave barriers are used for territory guarding, then detection capability is achieved, but installation costs and technical requirements increase
Solution Approach 1:
The patent replaces the complex microwave barrier system with a simpler RFID-based detection system. The RFID tags attach to fence elements and are read by portable or fixed readers, eliminating the need for microwave transmitters, receivers, and the associated shielding and alignment requirements.
Solution Approach 2:
The system uses RFID technology operating at different frequencies and detection ranges, allowing flexibility in system design and installation while maintaining effective detection capability at lower complexity and cost.
6Adaptability or versatility
If adjustable and rugged perimeters are used, then adaptability to terrain is improved, but compatibility with fixed sensor systems decreases
Solution Approach 1:
The wireless RFID system can easily adapt to adjustable and rugged perimeters. RFID tags can be attached to movable or flexible fence elements, and the wireless nature of the system allows it to accommodate changes in perimeter configuration without requiring re-cabling or repositioning of fixed sensors.
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
Enables accurate and flexible monitoring of designated areas with reduced installation and maintenance costs, effective detection of intruders without physical contact, and adaptability to various fencing types, including adjustable and rugged perimeters.
Implementation Method 1
each detector (1 1) comprises at least one communication unit (11) which provides a flow of radio signal
Implementation Method 2
The measuring unit (14) is further affixed to at least one test element (15) for detecting the current state of the sensors
Data Source
Figure 1~2
AI summary
The invention relates to a device and a system for detection of a radio signal, intended for the measurement, evaluation and analysis of the intensity of the radio signal for the purpose of early detection of an intruder in the guarded area. The essence of the technical solution consists in that the device and system for the detection of a radio signal includes at least two detectors (1), each of which represents a separate module containing at least one communication unit (11) providing the flow of the radio signal, whose intensity is evaluated by the integrated software component (111) of the intensity measuring and is also adapted for the transformation of data and communication with data information and at least one hardware control unit (12) which is equipped with integrated software component (121) of the analysis and evaluation of data information. In variant solution the technical solution can contain at least one measuring unit (14) with at least one reclining sensor (141) for detecting the position by at least one acceleration sensor (142) for detecting the impact, the at least one thermal sensor (143) for the detection of the temperature and by the at least one acoustic sensor (144) for the detection of sound.