Wireless Ad Hoc Sensor Network for Intrusion Detection
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Solution Overview
Problem
Current intrusion detection systems are limited by their wired connections, which restrict mobility, increase setup time when perimeters change, and are prone to failure due to power and communication line damage, and suffer from high false alarm rates.
Innovation Solution
A wireless ad hoc sensor network with intelligent sensor nodes equipped with multiple sensors, a processing unit, and a power source, capable of detecting intrusion activities and communicating them wirelessly to a gateway device for accurate and efficient detection and alert generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wired detection systems are used with permanent barriers, then system stability and power supply are improved, but mobility and adaptability to perimeter changes deteriorate
Solution Approach 1:
The patent replaces the mechanical wired connection system with a wireless communication system. Sensor nodes communicate intrusion detection data and receive power wirelessly through electromagnetic fields, eliminating physical cables. This substitution maintains system reliability through stable wireless protocols while dramatically improving mobility and adaptability, allowing sensor nodes to be freely repositioned along perimeter barriers without rewiring.
2Reliability
If wired detection systems are used, then power supply and data communication are reliable, but setup time increases when perimeters are altered
Solution Approach 1:
The patent implements a dynamic sensor network where sensor nodes can be easily added, removed, or repositioned along the perimeter. The wireless mesh network automatically reconfigures routing paths when nodes are moved or added, eliminating the need for manual rewiring. This dynamic architecture reduces setup time significantly while maintaining reliable power and communication through adaptive wireless connections.
3Reliability
If wired systems are used, then communication stability is improved, but fault tolerance deteriorates when wires are cut or damaged
Solution Approach 1:
The patent divides the detection system into independent sensor nodes that communicate through a mesh network. Each node operates autonomously and can route data through multiple paths to the central server. If one node or communication path fails due to interference or damage, data can be transmitted through alternative routes, providing fault tolerance while maintaining communication stability through redundant pathways.
4Ease of manufacture
If single dimension detection systems are used, then cost is reduced, but measurement precision and false alarm rate deteriorate
Solution Approach 1:
The patent combines multiple sensing dimensions within each sensor node, integrating vibration sensors, acoustic sensors, and environmental sensors to create multi-dimensional detection capabilities. By merging these different sensor types into unified nodes that communicate wirelessly, the system achieves high detection accuracy for distinguishing intrusions from environmental disturbances while controlling costs through shared wireless infrastructure and centralized processing.
Data Source
AI summary
The present application describes a sensor network and method for monitoring and detecting intrusion activities in accordance with various illustrative embodiments. In one embodiment, a method includes receiving a first input from a first sensor at a first sensor node of a wireless ad hoc sensor network, and comparing the first input to a first predefined input threshold associated with an intrusion activity. The method also includes wirelessly communicating an indication of the intrusion activity to a gateway device via a second sensor node of the wireless ad hoc sensor network. The gateway device may include an interface between the wireless ad hoc sensor network and a user-interactive system configured to monitor the wireless ad hoc sensor network.