The Experts below are selected from a list of 294 Experts worldwide ranked by ideXlab platform

Steven Hinckley - One of the best experts on this subject based on the ideXlab platform.

  • Optical fibre Bragg grating sensor based Reed Switch for physical intrusion detection
    2020
    Co-Authors: Gary Allwood, Graham Wild, Steven Hinckley
    Abstract:

    This paper describes a fibre Bragg grating based Reed Switch for physical intrusion detection applications. The optical fibre Reed Switch can be used to detect a security breach in windows and doors.

  • Optical Fiber Bragg grating based intrusion detection systems for homeland security
    2013 IEEE Sensors Applications Symposium Proceedings, 2013
    Co-Authors: Gary Allwood, Steven Hinckley, Graham Wild
    Abstract:

    This paper describes the use of optical Fiber Bragg grating (FBG) sensors for use in various intrusion detection systems for homeland security. We show that a FBG sensor can be used effectively as an embedded in-ground acoustic sensor, sensitive enough to detect the acoustic emissions associated with walking on a concrete surface. Also, the FBG can be used as an in-ground pressure Switch for intrusion detection through temporary flooring materials, such as tiles and wooden laminate. In addition, we verify the use of FBGs as in-fence perimeter breach detectors. Finally, we show how an FBG can be used as a Reed Switch for use in intrusion detection systems for doors and windows. The combination of the different intrusion detection techniques illustrate the versatility of FBGs in security applications, showing this single technology can be used to form a complete intrusion detection system for homeland security. Furthermore the paper details the progress made towards a real-time in-ground sensor network for advanced security applications.

  • A Fibre Bragg Grating based Reed Switch for intrusion detection
    2011 International Quantum Electronics Conference (IQEC) and Conference on Lasers and Electro-Optics (CLEO) Pacific Rim incorporating the Australasian, 2011
    Co-Authors: Graham Wild, Geoff Swan, Steven Hinckley
    Abstract:

    We show the implementation of an optical Reed Switch, for intrusion detection systems. The Reed Switch uses a novel transducer to convert the magnetic field into a strain, which is then converted into an optical signal by an optical fiber Bragg grating. The transducer works by using the magnetic field, to cause a ferromagnetic layer to be drawn towards a diamagnetic layer. The fiber Bragg grating is located between the two layers, such that when the magnetic field is present, the fiber is compressed, transversely. This results in a change in the Bragg gratings optical properties, specifically its spectral response, which can then be measured by the intrusion detection system.

Graham Wild - One of the best experts on this subject based on the ideXlab platform.

  • Optical fibre Bragg grating sensor based Reed Switch for physical intrusion detection
    2020
    Co-Authors: Gary Allwood, Graham Wild, Steven Hinckley
    Abstract:

    This paper describes a fibre Bragg grating based Reed Switch for physical intrusion detection applications. The optical fibre Reed Switch can be used to detect a security breach in windows and doors.

  • Optical Fiber Bragg grating based intrusion detection systems for homeland security
    2013 IEEE Sensors Applications Symposium Proceedings, 2013
    Co-Authors: Gary Allwood, Steven Hinckley, Graham Wild
    Abstract:

    This paper describes the use of optical Fiber Bragg grating (FBG) sensors for use in various intrusion detection systems for homeland security. We show that a FBG sensor can be used effectively as an embedded in-ground acoustic sensor, sensitive enough to detect the acoustic emissions associated with walking on a concrete surface. Also, the FBG can be used as an in-ground pressure Switch for intrusion detection through temporary flooring materials, such as tiles and wooden laminate. In addition, we verify the use of FBGs as in-fence perimeter breach detectors. Finally, we show how an FBG can be used as a Reed Switch for use in intrusion detection systems for doors and windows. The combination of the different intrusion detection techniques illustrate the versatility of FBGs in security applications, showing this single technology can be used to form a complete intrusion detection system for homeland security. Furthermore the paper details the progress made towards a real-time in-ground sensor network for advanced security applications.

  • A Fibre Bragg Grating based Reed Switch for intrusion detection
    2011 International Quantum Electronics Conference (IQEC) and Conference on Lasers and Electro-Optics (CLEO) Pacific Rim incorporating the Australasian, 2011
    Co-Authors: Graham Wild, Geoff Swan, Steven Hinckley
    Abstract:

    We show the implementation of an optical Reed Switch, for intrusion detection systems. The Reed Switch uses a novel transducer to convert the magnetic field into a strain, which is then converted into an optical signal by an optical fiber Bragg grating. The transducer works by using the magnetic field, to cause a ferromagnetic layer to be drawn towards a diamagnetic layer. The fiber Bragg grating is located between the two layers, such that when the magnetic field is present, the fiber is compressed, transversely. This results in a change in the Bragg gratings optical properties, specifically its spectral response, which can then be measured by the intrusion detection system.

K.a. Arushanov - One of the best experts on this subject based on the ideXlab platform.

  • Ion-plasma treatment of Reed Switch contacts: A study by time-of-flight secondary ion mass spectrometry
    Journal of Analytical Chemistry, 2014
    Co-Authors: A. B. Tolstoguzov, K.a. Arushanov, I.a. Zeltser, M N Drozdov, Orlando M. N. D. Teodoro
    Abstract:

    A TOF.SIMS-5 time-of-flight secondary ion mass spectrometer operating with pulsed 25-keV Bi^+ ions for analysis and 2-keV Cs^+ ions for sputter ion-beam etching was employed for studying the near-surface composition of iron-nickel (permalloy) contacts (blades) after the treatment in pulsed nitrogen plasma directly in hermetically sealed Reed Switches. The formation of 20- to 25-nm thick oxynitride coatings in the contacting region of the blades was observed. It was found that this coating was of the diffusive nature and produced via the plasma nitriding of the contacts.

  • Nanosized heterogeneous coatings of Reed Switch contacts on the base of iron and nickel nitrides
    2014 IEEE 9th Nanotechnology Materials and Devices Conference (NMDC), 2014
    Co-Authors: K.a. Arushanov, G.p. Gololobov, I.a. Zeltser, S.m. Karabanov, D.v. Suvorov
    Abstract:

    Paper shows results of the experimental researches of nanosized heterogeneous coatings of Reed Switch contacts on the base of iron and nickel nitrides. The process of the coating formation under the impact of plasma treatment of the contact surfaces under conditions of the hermetically sealed Reed Switch with nitrogen atmosphere is described. It is showed that nanosized heterogeneous FenN and NinN contact coatings with thickness about 20-25 nanometers are formed within the treatment process. Life time tests have shown that these nitride coatings provide increase of Reed Switch life time in 1.5-2 orders in comparison with Reed Switches without contact coatings.

  • tof sims study on surface modification of Reed Switch blades by pulsing nitrogen plasma
    Applied Surface Science, 2013
    Co-Authors: K.a. Arushanov, I.a. Zeltser, S.m. Karabanov, M N Drozdov, A Tolstogouzov
    Abstract:

    Abstract A TOF.SIMS-5 by ION-TOF operating with pulsed 25 keV Bi+ for analysis and 2 keV Cs+ for sputtering was used to study depth compositional changes in near-surface layers of permalloy (iron–nickel) blades after treatment by pulsed nitrogen plasma directly in sealed Reed Switches. The formation of 350 nm-thick oxy-nitride coating in the contacting region of the blades was observed. It was found that the origin of this coating cannot be explained just by nitrogen and oxygen diffusion inside the treated material. Rather, cathode sputtering and re-deposition of sputtered products, thermal decomposition of nitrides and oxides along with sputter-induced surface roughening can also contribute in the formation of the modified layers.

  • New technology of modification of Reed Switch contact surfaces with the usage of ion-plasma nitriding
    26th International Conference on Electrical Contacts (ICEC 2012), 2012
    Co-Authors: K.a. Arushanov, I.a. Zeltser, S.m. Karabanov, R.m. Maizels, E.n. Moos
    Abstract:

    By the methods of Auger-electron spectroscopy, atomic-force and optical microscopy there had been studied iron-nickel contact surfaces of Reed Switches after ion-induced modification. It was shown that corrosion and erosion resistance of modified contacts is connected with the peculiarities of topography of the surface and formation of nitride layers. There was given experimental justification of possibility of making of Reed Switches with modified contact surface instead of electroplating from precious metals.

Hiroyuki Yaguchi - One of the best experts on this subject based on the ideXlab platform.

  • Effect of Battery on Moving Properties of Cableless In-Piping Magnetic Actuator
    Journal of Electromagnetic Analysis and Applications, 2013
    Co-Authors: Ryuichi Watanabe, Tomohiro Izumikawa, Hiroyuki Yaguchi
    Abstract:

    This paper proposes a cableless in-piping magnetic actuator that exhibits a very high-speed locomotion into inner pipe of 8 mm. The cableless magnetic actuator is moved according to the vibration amplitude and resonance energy of a mass-spring system excited by using an electromagnetic force. The iron core size of the bobbin type electromagnet was roughly designed by computer simulation and then optimized experimentally. The proposed actuator incorporates an electrical inverter that directly transforms DC from button batteries into AC. The electrical DC-AC inverter incorporates a mass-spring system, a Reed Switch and a curved permanent magnet that Switch under an electromagnetic force. The duty ratio is changed into this electrical inverter by changing the position of the curved magnet and the Reed Switch. Experimental result demonstrates that the cableless magnetic actuator was able to move horizontally at 471 m, and horizontal speed at 327 mm/s when Maxell SR621W silver-oxide button batteries were used.

  • Novel cableless magnetic actuator capable of high-speed locomotion in a thin pipe by combination of mechanical vibration and electromagnetic force
    Procedia Engineering, 2012
    Co-Authors: Tomohiro Izumikawa, Hiroyuki Yaguchi
    Abstract:

    The present paper proposes a novel cableless magnetic actuator that exhibits a very high thrusting force and is capable of high speed locomotion in a thin pipe by means of a new motion principle. The magnetic actuator is moved according to the vibration amplitude and elastic energy of a mass-spring system due to mechanical resonance energy. The proposed actuator contains an electrical inverter that directly transforms DC from button batteries into AC. The electrical DC-AC inverter incorporates a mass-spring system, a Reed Switch and a curved permanent magnet that Switches under an electromagnetic force. © 2011 Published by Elsevier Ltd.

  • Cableless Magnetic Actuator Capable of Locomotion in a Thin Pipe by Means of a New Motion Principle
    IEEE Transactions on Magnetics, 2011
    Co-Authors: Hiroyuki Yaguchi, Tomohiro Izumikawa
    Abstract:

    This paper proposes a novel cableless magnetic actuator with a new propulsion module that exhibits a very high thrusting force and is capable of locomotion in a thin pipe by means of a new motion principle. The magnetic actuator is moved according to the vibration amplitude and elastic energy of a mass-spring system due to mechanical resonance energy. The proposed actuator contains an electrical inverter that directly transforms dc from button batteries into ac. The electrical dc-ac inverter incorporates a mass-spring system, a Reed Switch, and a curved permanent magnet that Switches under electromagnetic force. Experimental results reveal that the actuator is able to move upward at a speed of 52 mm/s when powered by 10-button batteries and pulling a load mass of 10 g.

C. Kawakita - One of the best experts on this subject based on the ideXlab platform.

  • Magnetic and mechanical design of ultraminiature Reed Switches
    IEEE Transactions on Components Hybrids and Manufacturing Technology, 1992
    Co-Authors: K. Hinohara, T. Kobayashi, C. Kawakita
    Abstract:

    The miniaturization limit of the Reed Switch with respect to its magnetic and mechanical properties is discussed. Assuming that the contact rating, the Switching current and voltage, the carry current, and the breakdown voltage decrease, it was found that the ultraminiature Reed Switch with a glass inner diameter of 1.0 mm and a glass inner length of 4.0 mm can be mass produced using existing process technology.

  • Magnetic and mechanical design of ultraminiature Reed Switches
    Electrical Contacts - 1991 Proceedings of the Thirty-Seventh IEEE HOLM Conference on Electrical Contacts, 1991
    Co-Authors: T. Kobayashi, K. Hinohara, C. Kawakita
    Abstract:

    The miniaturization limit of the Reed Switch with respect to the magnetic and mechanical properties is discussed assuming that the contact rating, the Switching current and voltage, the carry current, and the breakdown voltage are 1 VA, 0.1 A, 24 V, 0.3 A, and 150 V, respectively. Assuming that the contact rating, the Switching current and voltage, the carry current, and the breakdown voltage decrease, it was found that the ultraminiature Reed Switch with glass inner diameter of 1.0 mm and glass inner length of 4.0 mm can be put in mass production by using the existing process technology. This Reed Switch has a contact force of 1 gf and is suitable in the field of microelectronics.

  • A study of the discharge phenomena of rhodium-plated contact Reed Switches
    IEEE Transactions on Components Hybrids and Manufacturing Technology, 1991
    Co-Authors: T. Kobayashi, K. Hinohara, C. Kawakita
    Abstract:

    Rhodium-plated contact Reed Switches have been used in various fields that require high reliability, such as measurement and control. To attain high breakdown voltage, the inside of the Reed Switch glass tube is placed under high pressure or in vacuum. The discharge phenomena of high breakdown voltage Reed Switches, such as the pressurized Reed Switch and vacuum Reed Switch, were studied, and the discharge phenomena of general-purpose Reed Switches were investigated with respect to their basic mechanism and reactions. In the course of this study, the contact surfaces were analyzed after discharge, assuming that the carrier in the discharge must remain on them. The analysis revealed that the nitrogen cation and oxygen anion serve as carriers in the discharge for the pressurized Reed Switch and general-purpose Reed Switch. In the vacuum Reed Switch the oxygen anion triggers the discharge as a carrier.

  • A study of the discharge phenomena of rhodium-plated contact Reed Switches
    Thirty-Sixth IEEE Conference on Electrical Contacts and the Fifteenth International Conference on Electrical Contacts, 1990
    Co-Authors: T. Kobayashi, K. Hinohara, C. Kawakita
    Abstract:

    The discharge phenomena of high-breakdown-voltage Reed Switches (such as the pressurized Reed Switch and the vacuum Reed Switch) and the discharge phenomena of general-purpose Reed Switches are studied with respect to their basic mechanism and reactions. The contact surface after discharge is analyzed, assuming that the carriers in the discharge must remain on them. The analysis revealed that the nitrogen cation and the oxygen anion serve as carriers in the discharge for the pressurized Reed Switch and general-purpose Reed Switch. For the vacuum Reed Switch, the oxygen anion triggers the discharge as a carrier.