Barrier Rope Tension Detection for Trespass Sensing
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Solution Overview
Problem
Existing trespassing detection systems face challenges in maintaining ropes in a tensioned state, leading to deformation and requiring numerous sensors, which increases maintenance costs and reduces reliability, especially in large-scale installations with limited space.
Innovation Solution
A trespassing detection apparatus that maintains barrier ropes in a tensioned state using a minimal number of detection units, employing a detection unit to pull the ropes in a designated direction and detect changes due to shaking or cutting, thereby reducing the need for strong tension and complex equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If strong tension is applied to ropes to maintain them in a straight line form, then the ropes can maintain their shape over long installation sections, but this causes deformation of posts or increase in the size of tensioning means
Solution Approach 1:
The patent divides the long installation section into multiple short unit sections by installing posts at regular intervals. Each section between adjacent posts is kept relatively short, allowing the ropes to maintain their straight line form with only weak tension, thereby avoiding the need for strong tensioning that would deform posts.
2Reliability
If sensors are connected to both end portions of each rope to detect trespassing, then detection coverage is improved, but the number of sensors increases leading to increased failure risk and maintenance requirements
Solution Approach 1:
The patent merges the detection function into a single sensor installed at one end of each rope section. The sensor detects changes in tension or position of the rope, and the system determines trespassing by analyzing the response of the rope to external forces, eliminating the need for multiple sensors at both ends.
Solution Approach 2:
The single sensor serves multiple functions: it detects rope tension changes, position deviations, and indirectly monitors the integrity of the entire rope section. This multi-functional approach reduces the total number of sensors required while maintaining comprehensive detection capability.
3Force
If ropes are allowed to sag due to temperature variation or gravity, then weak tension can be applied, but the spacing between ropes changes greatly making trespassing detection difficult
Solution Approach 1:
The patent employs a dynamic detection approach where the sensor continuously monitors changes in rope position and tension. Rather than requiring fixed spacing, the system detects trespassing by identifying abnormal changes or patterns in the dynamic behavior of the rope, such as sudden displacement or tension changes caused by cutting or deformation.
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 apparatus effectively detects trespassing by minimizing maintenance needs and economic costs while improving durability and service life by maintaining ropes in a weakly tensioned state, allowing prompt response to changes.
Implementation Method 1
the detection unit 130 pulls the plurality of barrier ropes 120 in a designated direction so as to maintain the plurality of barrier ropes 120 in a tensioned state and to detect an amount of change occurring due to shaking or cutting of the barrier ropes 120
Data Source
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AI summary
The purpose of the present invention is to provide an apparatus for detecting trespassing, the apparatus including: a plurality of main bodies (110) installed at selected positions in a sensing area; a plurality of barrier ropes (120) for blocking trespassing, which connect the main bodies (110) to one another in the horizontal direction and are arranged to be spaced apart at predetermined intervals in the vertical direction; and a detection unit (130) that pulls the plurality of barrier ropes (120) in a specified direction to keep same in tension and can detect changes caused by shaking or cutting of the barrier ropes (120) during a trespassing process. The present invention keeps the ropes in tension by pulling the ropes in the specified direction with weak tension, and thus immediately detects and senses a shaking or cutting state of the ropes occurring during a trespassing process, resulting in the effect of enabling rapid follow-up actions.