Security Device Detection Order Comparison
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Solution Overview
Problem
Existing security devices and systems are ineffective for outdoor areas with multiple intrusion paths, such as shrines, greenhouses, and ship anchorage, where defining a security area is difficult, and struggle to accurately detect intruders through continuous visual checks of surveillance cameras.
Innovation Solution
A security device and system that uses multiple detection means, including motion sensors and RFID technology, to determine the presence of individuals within defined detection ranges, comparing detection orders to activate or deactivate security status, and an RFID system to identify authorized personnel, allowing for secure area control and intrusion detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple detection means are deployed to cover outdoor areas with multiple intrusion paths, then detection coverage is improved, but device complexity increases
Solution Approach 1:
The security area is divided into multiple detection ranges, each covered by a separate detection means. This segmentation allows comprehensive coverage of outdoor areas with multiple intrusion paths while maintaining manageable system complexity through modular detection units
Solution Approach 2:
The control device integrates multiple functions including receiving detection results from various detection means, determining intrusion based on detection orders, and controlling security devices. This multi-functionality consolidates system complexity into a single control unit while maintaining broad detection coverage
2Measurement precision
If detection order comparison is implemented to determine intrusion, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The control device stores predetermined detection orders for different intrusion paths before actual intrusion detection. This preliminary preparation enables accurate intrusion determination through simple comparison operations, improving measurement precision while keeping the control logic relatively simple
Solution Approach 2:
The system compares actual detection orders with predetermined detection orders to determine whether intrusion has occurred. This feedback mechanism provides accurate intrusion detection by verifying whether the detected sequence matches expected legitimate access patterns
3Reliability
If continuous visual check of surveillance camera images is performed, then detection coverage is improved, but loss of time increases
Solution Approach 1:
The detection means automatically detect and report intrusion without requiring continuous human visual inspection of surveillance images. The system serves itself by autonomously monitoring the security area, eliminating the time loss associated with manual image checking while maintaining high detection reliability
Solution Approach 2:
Automatic detection means replace the mechanical process of continuous visual inspection by human operators. This substitution eliminates the time delay inherent in manual surveillance while maintaining or improving detection reliability through automated sensing and immediate reporting
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 system provides a high level of security by accurately detecting intrusions and managing security status in complex outdoor environments, preventing unauthorized access and ensuring secure operations.
Implementation Method 1
an RFID tag configured to communicate with the RFID reception device over radio waves
Data Source
AI summary
A security device is provided with a plurality of detectors for detecting a person, and controls the security status of a security target, the security device being provided with: a detection sequence comparison unit which performs a comparison to determine whether the sequence in which the person was detected by the detector coincides with a prestored detection sequence that is performed by the detector and associated with the security setting status or security cancellation status; and a control unit which controls the security status of the security target from the security cancellation status to the security setting status, or controls the security status from the security setting status to the security cancellation status, if the result of the comparison by the detection sequence comparison unit indicates that the sequence in which the person was detected by the detector coincides with the detection sequence performed by the detector.