Multi-Axis Accelerometer Sensor for Taut Wire Intrusion Detection
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Solution Overview
Problem
Current taut wire intrusion detection fences lack the ability to accurately determine the location of an intrusion attempt relative to the sensors, identify the specific sensor triggering the alarm, and provide information on the weight, direction, and path of the intrusion, as well as detect vibrations, due to the limitations of binary sensors and their large physical size.
Innovation Solution
Implementing a compact multi-axes accelerometer connected to the taut wire via a mechanical means that converts wire movement into sensor movement, allowing detection in all accelerometer axes, enabling precise location identification, sensor specificity, and vibration detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If binary sensors are used in taut wire intrusion detection fences, then the device complexity is reduced and ease of manufacture is improved, but the measurement precision and information quality deteriorate as the sensors cannot provide location, weight, direction, or vibration data
Solution Approach 1:
The patent replaces traditional mechanical binary sensors with electronic accelerometers that convert mechanical wire movements into electrical signals. This substitution enables precise measurement of intrusion characteristics including location, weight, direction, and vibrations while maintaining manufacturing feasibility through standardized electronic component integration
Solution Approach 2:
The patent changes the sensing parameter from simple binary state detection to multi-axis acceleration measurement. By measuring acceleration in multiple directions, the system captures comprehensive intrusion data including weight, direction, and location, transforming the sensor output from qualitative to quantitative information
2Reliability
If large physical size sensors are installed on the fence, then the sensor can detect wire movements, but the ability to deploy wires closely together deteriorates due to space constraints
Solution Approach 1:
The patent replaces bulky mechanical sensors with compact electronic accelerometers that have significantly reduced physical dimensions. This miniaturization allows multiple sensors to be deployed in close proximity, enabling crowded wire configurations while maintaining reliable detection capabilities through sensitive acceleration measurement
3Device complexity
If traditional sensors are used, then the system structure is simple, but the loss of information increases as location, weight, direction, and vibration data cannot be determined
Solution Approach 1:
The patent changes the measurement parameters from simple presence/absence detection to multi-dimensional acceleration measurement. The accelerometer captures motion in multiple axes, providing information about intrusion location, weight, direction, and vibrations, thereby reducing information loss while keeping the overall system architecture relatively simple
Solution Approach 2:
The patent implements a multi-functional sensor that simultaneously provides location, weight, direction, and vibration detection capabilities through a single accelerometer device. This universal sensor replaces multiple specialized sensors, reducing system complexity while comprehensively capturing intrusion information
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
This solution provides detailed and accurate indications of intrusion attempts, including location, weight, direction, and path, while allowing for a crowded deployment of taut wires, enhancing the detection capabilities of intrusion detection fences.
Implementation Method 1
a compact, multi-axes accelerometer, and linking the accelerometer to the taut wire to which it is allocated, by a mechanical means that from the instant of loading the taut wire... would convert the movement of the wire into a movement of the sensor
Data Source
AI summary
A sensor for an intrusion detection fence of a taut wires type and a method implemented in its operation, wherein the sensor is a multi-axes accelerometer that is installed on the sensors' pole of the fence while inclined relative to the fence taut wire unto which it is connected, and the sensor is connected to fence taut wire via a movement converting means such that from an instant of loading the taut wire as happens when an intrusion attempt through it occurs, the movement converting means converts the movement of the taut wire unto a rotational movement of the sensor that is amenable to be sensed in at least two axes.