Sensor Network Security System with Portable Terminal
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Solution Overview
Problem
Existing security systems struggle to continuously monitor individuals or objects outside their surveillance range and require cumbersome procedures for validation, with limited expandability and inability to predict abnormalities from changing patterns without constant surveillance.
Innovation Solution
A sensor network/application system that connects sensor nodes to a management device via a network, allowing for automatic security level adjustments based on pre-registered conditions, enabling continuous monitoring and fine control without constant human intervention, with expandability through multiple servers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If surveillance cameras and IC cards are used for security monitoring, then entry and exit control is improved, but continuous monitoring outside surveillance range becomes impossible and user procedures become troublesome
Solution Approach 1:
The portable terminal integrates multiple functions including security monitoring, information collection via sensors, and wireless communication capabilities into a single device, enabling it to serve as both an IC card for access control and a mobile surveillance unit that can operate beyond fixed camera ranges
Solution Approach 2:
The portable terminal acts as an intermediary between fixed surveillance infrastructure and mobile monitoring needs, collecting data through onboard sensors and transmitting it wirelessly to central systems, thereby extending monitoring coverage without requiring physical surveillance infrastructure at every location
2Loss of information
If sensors collect information continuously from multiple nodes, then monitoring completeness is improved, but data processing complexity and energy consumption increase
Solution Approach 1:
The sensor network operates using periodic sampling rather than continuous monitoring, where sensors collect information at predetermined intervals and transmit data batched by time periods, reducing energy consumption while maintaining adequate monitoring coverage
Solution Approach 2:
Thresholds and conditions for abnormality detection are pre-configured in the system, allowing sensor nodes to perform local preliminary filtering of data before transmission, sending only relevant information that meets predetermined criteria rather than all collected data
3Reliability
If security systems require validation by IC card at restricted areas, then access control security is improved, but user convenience and system expandability deteriorate
Solution Approach 1:
The system automatically performs validation and authentication processes without requiring manual user actions beyond presenting the portable terminal, with the terminal itself serving as both the credential carrier and the interface for interaction
Data Source
AI summary
A security system with processing optimized for monitoring the actions of a surveillance subject and detecting abnormal actions. The action record of an individual is monitored using a sensor network security system SNS, and the development of an action event is reported as an action, and the corresponding processing of the security system SCS is determined based on this action.