Monitoring Apparatus Detecting Object Presence in After-Passage Areas
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Solution Overview
Problem
Conventional monitoring systems fail to effectively detect objects leaving or being taken away from a sensing area without requiring frequent updates of background data, leading to poor security performance and increased maintenance, and are unable to detect stationary objects or changes in object states.
Innovation Solution
A monitoring apparatus that determines whether objects are present in an after-passage or before-passage sensing area for a predetermined period, allowing for the detection of leaving-behind or taking-away events without prior registration of background data, by setting these areas to include positions adjacent to the object's path or undetectable regions caused by moving objects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If background data is previously registered to remove obstacles from sensed information, then the system can detect moving objects, but the system cannot detect objects newly brought in or objects whose layouts are changed without frequent updates
Solution Approach 1:
The system performs preliminary sensing to acquire image data of the sensing area before main detection operations. This preliminary action creates a baseline state that enables detection of changes without requiring manual background registration, resolving the contradiction between detection accuracy and maintenance effort
Solution Approach 2:
The system automatically updates background data through self-learning mechanisms. The background management unit autonomously acquires and stores image data as background without human intervention, allowing the system to adapt to new objects and layout changes while maintaining high detection accuracy, thus eliminating the need for frequent manual maintenance
2Device complexity
If the system monitors only moving objects to remove stationary objects, then motion detection is simplified, but objects left behind or taken away cannot be detected
Solution Approach 1:
The system dynamically adjusts detection modes based on object characteristics. While the basic mode focuses on moving objects for simplicity, the system can switch to change detection mode that compares current image data with background data to detect stationary objects, objects left behind, or objects taken away, maintaining both simple operation and high security performance
Solution Approach 2:
The system is designed to perform multiple detection functions using the same sensing apparatus. It can detect moving objects through motion detection, stationary objects through background comparison, objects left behind by analyzing after-passage areas, and objects taken away by analyzing before-passage areas, making the system versatile without increasing device complexity
3Reliability
If background data is continuously updated to meet security demands, then detection of leaving-behind and taking-away events improves, but maintenance work and operational complexity increase
Solution Approach 1:
The background management unit operates autonomously to acquire, store, and update background image data without human intervention. The system automatically adapts to changes in the sensing area, maintaining high security performance for detecting leaving-behind and taking-away events while keeping operational complexity low through self-service automation
Data Source
AI summary
In a monitoring apparatus, an optical sensor senses objects present in a sensing area, and moving speeds and moving directions of the objects are calculated based on changes with time in positional information of the sensed objects. An object which meets a predetermined moving condition is determined as a moving object. Hence an entrance of the moving object into the sensing area can be monitored. In this apparatus, by a determining section, it is determined whether or not an object is sensed in an area (after-passage sensing area) which is set to include positions adjacent to positions through which the sensed moving object has passed. When the object has been sensed in the area, by the determining section, it is further determined whether or not the object has remained for a predetermined determination period of time or more. This determined result is outputted by an outputting section.