Staff Members - Benha University
"Novel Contact Sensor Concept and Prototype Based on 2-DOF Vibration Absorber System", Intelligent Systems, Modelling and Simulation, IEEE 7th International Conference, ISMS 2016 (2016). DOI:10.1109/ISMS.2016.70
• 2016
Publication Information
Authors
Hussein F.M. Ali, Ahmed M. R. Fath El Bab, Zakarya Zyada, and Said M. Megahed
Keywords
Contact sensing; finite element; Landmine
detection; vibration; vibration absorber.
Journal
Not Available
Publisher
Not Available
Volume
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Issue
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Pages
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publication.type
International
Paper Link
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Supplementary Materials
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Abstract
Landmines are major problems, waste life and
money. Much recent research acknowledges that the contact sensors have promising potential. In this work, a new idea of contact sensor for landmine detection is introduced. The sensor main principle is based on the concept of 2-DOF vibration absorber system (two springs and two masses), to detect the existence of an object (ex: landmine) in sand which is modeled as a 3 rd spring. The sand stiffness (the 3 rd spring stiffness k o ) can be acquired as function of the frequency vibration absorber mode ω Abs (the frequency at which the 2 nd mass has the lowest amplitude (mathematically proven: zero)). When the sand stiffness changed due to the presence of the landmine, the vibration absorber frequency ω Abs changes, and consequently the landmine can be detected. The mathematical derivation of
the (ω Abs -k o ) relation is verified by simulations with Matlab and with finite element COMSOL Multi-physics. The system is succeeded to measure the sand stiffness up to 100kN/m. A physical prototype for the sensor is developed with sensitivity 16.85 (N/m)/Hz.
money. Much recent research acknowledges that the contact sensors have promising potential. In this work, a new idea of contact sensor for landmine detection is introduced. The sensor main principle is based on the concept of 2-DOF vibration absorber system (two springs and two masses), to detect the existence of an object (ex: landmine) in sand which is modeled as a 3 rd spring. The sand stiffness (the 3 rd spring stiffness k o ) can be acquired as function of the frequency vibration absorber mode ω Abs (the frequency at which the 2 nd mass has the lowest amplitude (mathematically proven: zero)). When the sand stiffness changed due to the presence of the landmine, the vibration absorber frequency ω Abs changes, and consequently the landmine can be detected. The mathematical derivation of
the (ω Abs -k o ) relation is verified by simulations with Matlab and with finite element COMSOL Multi-physics. The system is succeeded to measure the sand stiffness up to 100kN/m. A physical prototype for the sensor is developed with sensitivity 16.85 (N/m)/Hz.