Intrusion Detection Region Configuration for Position-Based Alert Timing

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Solution Overview

Problem

Existing image surveillance techniques set a single intrusion duration time for auxiliary warning regions, which does not account for varying intrusion positions, leading to potential delays in alerting when objects intrude into warning regions.

Innovation Solution

An intrusion detection device that detects intrusion positions and associates them with specific time periods, outputting alerts when objects stay in designated regions for those time periods, allowing for customized duration settings based on intrusion positions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a single intrusion duration time is set for the auxiliary warning region, then the system is simple to operate, but the alert may be delayed when an object intrudes into the warning region through a shorter route

Engineering Contradiction:

Improveease of setting intrusion duration timeVSAvoidtime delay in alert output

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The patent divides the auxiliary warning region into multiple sub-regions based on intrusion positions, with each sub-region having its own intrusion duration time. This segmentation allows the system to handle different intrusion scenarios independently, preventing time delays while maintaining operational simplicity through automated region division.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies different intrusion duration times to different locations (sub-regions) within the auxiliary warning region based on their proximity to the warning line. This local quality approach ensures that areas closer to the warning line have shorter intrusion duration times, enabling timely alerts while keeping the overall system easy to operate.

Inventive Principle:

Principle #3Local quality

2Reliability

If the auxiliary warning region is set in a wide range including the warning line, then early detection of approaching objects is enabled, but the intrusion duration time becomes excessively long for objects intruding through shorter routes

Engineering Contradiction:

Improveearly detection capabilityVSAvoidexcessive intrusion duration time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent segments the wide auxiliary warning region into multiple sub-regions based on intrusion positions, allowing early detection across the entire wide range while assigning shorter intrusion duration times to sub-regions closer to the warning line, thus preventing excessive time delays.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent dynamically adjusts the intrusion duration time based on the intrusion position within the auxiliary warning region. Objects intruding from positions closer to the warning line are assigned shorter duration times, while those from farther positions have longer duration times, maintaining both early detection capability and timely alerts.

Inventive Principle:

Principle #15Dynamics

3Device complexity

If a fixed intrusion duration time is used for all intrusion positions, then the system is simple to implement, but it cannot account for varying real distances from the warning line

Engineering Contradiction:

Improvesystem implementation complexityVSAvoidaccuracy in detecting intrusion position

Core Design Contradiction:

Device complexityVSMeasurement precision

Solution Approach 1:

The patent segments the auxiliary warning region into multiple sub-regions based on intrusion positions, with each sub-region having its own intrusion duration time. This segmentation enables precise detection of intrusion positions while keeping the system relatively simple through automated region division and assignment.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent changes the intrusion duration time parameter based on the intrusion position within the auxiliary warning region. By adjusting this parameter dynamically according to the detected intrusion position, the system achieves measurement precision without significantly increasing implementation complexity.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS20250308357A1Intrusion detection system, intrusion detection method, and computer-readable medium

Publication Date: 2025.10.02 NEC CORP

AI summary

A setting assistance device includes an acquisition unit, a calculation unit and a determination unit. The acquisition unit acquires coordinates designated by a user for an image capturing a three-dimensional space. The calculation unit calculates coordinates of a position located at a predetermined distance from a position of a part of the three-dimensional space relating to the acquired coordinates. The determination unit determines a region set for the acquired coordinates based on the calculated coordinates.