Fence Post Integrated Vibration Detection System
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Solution Overview
Problem
Existing site perimeter protection systems using shock and vibration detection methods are vulnerable to neutralization by malicious individuals, as the detection cables can be easily cut, rendering them ineffective in preventing intrusion attempts.
Innovation Solution
Integrating shock and vibration detection means into the fence posts rather than the panels, combined with radio frequency data transmission and autonomous power supply, such as photovoltaic panels, to make the system less accessible and more secure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If shock and vibration detection means are mounted on fence panels, then detection capability is provided, but the system becomes vulnerable to neutralization by cutting cables
Solution Approach 1:
Instead of mounting detection means on panels (conventional approach), the patent inverts the approach by mounting shock and vibration detection means on fence posts. This inversion makes the detection system harder to neutralize while simplifying installation, as posts are more robust and less accessible than panels.
Solution Approach 2:
The detection means are integrated within the structure of the fence posts themselves, with sensors positioned inside or within the hollow interior of the posts. This nesting approach conceals the detection system, making it inaccessible to malicious persons while maintaining structural integrity.
2Reliability
If detection means are made accessible for easy installation, then mounting operations are simple, but the system becomes vulnerable to cable access and neutralization
Solution Approach 1:
Detection means are nested within the fence post structure, making them inaccessible to malicious persons while allowing straightforward installation from the outside. The sensors are positioned inside or within the hollow interior of the posts, concealing them effectively.
Solution Approach 2:
The patent inverts the conventional approach by making the detection system integrated within robust posts rather than mounted on accessible panels. This inversion simultaneously improves security while maintaining installation simplicity through standardized post integration.
3Reliability
If cable-based data transmission is used, then data can be transmitted to remote station, but cables become vulnerable to cutting and neutralization
Solution Approach 1:
The patent replaces mechanical cable-based data transmission with radio frequency communication. This substitution eliminates vulnerable physical cables while ensuring reliable data transmission between the detection means and remote monitoring station, as RF signals cannot be easily intercepted or disrupted.
4Use of energy by moving object
If photovoltaic panels are integrated into posts, then autonomous power supply is achieved, but post structure becomes more complex
Solution Approach 1:
The fence posts are designed to serve multiple functions: structural support, housing for detection means, and mounting for photovoltaic panels. This multi-functionality approach integrates power generation capability into the existing post structure without requiring separate complex systems, achieving autonomous power supply while maintaining structural efficiency.
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 enhanced inviolability by concealing detection means within the posts, reducing the risk of cable access and power supply disruption, thereby effectively preventing intrusion attempts and improving the reliability of perimeter protection.
Implementation Method 1
autonomous power supply, such as photovoltaic panels
Implementation Method 2
shock and/or vibration detection means comprise at least one accelerometer
Implementation Method 3
data transmission means comprise means for transmitting said data by radio frequency
Data Source
Figure 1~3
Figure 4
AI summary
The system has detection units (3) for detecting vibrations and shocks produced on a fence, where the fence comprises panels (2) fixed on poles (1). Transmission units transmit data issued from the detection units to a remote control station controlling a personal computer, where the detection units constituted by capacitive type accelerometers are carried by one of the poles. The transmission units are associated to data reception units receiving data by radiofrequency, and the detection units are integrated on a fixed card in a recess of one of the poles.