The Experts below are selected from a list of 318 Experts worldwide ranked by ideXlab platform

Jie Huang - One of the best experts on this subject based on the ideXlab platform.

  • Truly Distributed Coaxial Cable Sensing Based on Random Inhomogeneities
    IEEE Transactions on Instrumentation and Measurement, 2019
    Co-Authors: Chen Zhu, Yiyang Zhuang, Yizheng Chen, Jie Huang
    Abstract:

    Rayleigh backscattering-based distributed fiber optic sensing technology is well known and widely used for large-scale structural health monitoring. Inspired by the Rayleigh backscattering-based sensing methodology on an optical fiber, in this paper, we present a sensing concept based on the random inhomogeneities on a Coaxial Cable. As an analogy of Rayleigh backscattering along an optical fiber length, “backscattering” also exists from a commercial Coaxial Cable due to its inherent defects along a Cable length which induce a local variation (i.e., impedance mismatch). This is because of the irregular microscopic structures of the inner/outer conductors, and the inhomogeneous density or permittivity of the inner dielectrics after the Cables are manufactured. The accumulated backscattered signals along the Coaxial Cable can be obtained using frequency-domain reflectometry. By analyzing the shift in the local backscattered signal, the local environmental perturbations (e.g., local strain or temperature) can be determined, so that truly distributed sensing capability using a Coaxial Cable can be achieved. To verify the proposed concept, an intact and commercial Coaxial Cable was demonstrated for distributed temperature sensing. Compared with the existing Coaxial Cable-based distributed sensing technologies, the proposed sensing concept does not need extra modifications to the Coaxial Cable and offers a truly distributed sensing capability.

  • Control of Critical Coupling in a Coiled Coaxial Cable Resonator
    The Review of scientific instruments, 2014
    Co-Authors: Jie Huang, Jun Fan, Tao Wang, Tao Wei, Hai Xiao
    Abstract:

    This paper reports a coiled Coaxial Cable resonator fabricated by cutting a slot in a spring-like coiled Coaxial Cable to produce a periodic perturbation. Electromagnetic coupling between two neighboring slots was observed. By manipulating the number of slots, critical coupling of the coiled Coaxial Cable resonator can be well controlled. An ultrahigh signal-to-noise ratio (over 50 dB) at the resonant frequency band was experimentally achieved from a coiled Coaxial Cable resonator with 38 turns. A theoretic model is developed to understand the device physics. The proposed device can be potentially used as a high quality and flexibly designed band-stop filter or a sensor in structural health monitoring.

  • a Coaxial Cable fabry perot interferometer for sensing applications
    Sensors, 2013
    Co-Authors: Jie Huang, Hai Xiao, Lei Hua, Jun Fan, Tao Wang, Ming Luo
    Abstract:

    This paper reports a novel Coaxial Cable Fabry-Perot interferometer for sensing applications. The sensor is fabricated by drilling two holes half-way into a Coaxial Cable. The device physics was described. The temperature and strain responses of the sensor were tested. The measurement error was calculated and analyzed.

  • Coaxial Cable Bragg grating sensors for large strain measurement with high accuracy
    Proceedings of SPIE, 2012
    Co-Authors: Jie Huang, Jun Fan, Tao Wei, Xinwei Lan, Hai Xiao
    Abstract:

    In this paper, a new Coaxial Cable Bragg grating (CCBG) is developed as a strain sensor and the sensor's capacity for large range strain measurement in structural health monitoring (SHM) is demonstrated for the first time. The sensor device is comprised of regularly spaced periodic discontinuities along a Coaxial Cable. The discontinuities are fabricated using a computer numerical controlled (CNC) machine to drill holes in the Cable. Each discontinuity generates a weak reflection to the electromagnetic wave propagating inside the Cable. Superposition of these weak reflections produces a strong reflection at discrete frequencies that can be explained by Bragg grating theory. By monitoring the resonant frequency shift of the sensor's reflection or transmission spectra, strain measurement sensitivity of 20μe and a dynamic range of 50000μe (5%) were demonstrated for axial strain measurements. The experimental results show that the CCBG sensors perform well for large strain measurement needed in structural health monitoring (SHM).

  • Coaxial Cable bragg grating
    Applied Physics Letters, 2011
    Co-Authors: Tao Wei, Hai Xiao, Jie Huang, Jun Fan
    Abstract:

    This paper reports a Coaxial Cable Bragg grating (CCBG) fabricated by drilling holes into the Cable at periodic distances along the axial direction. Resonances were observed at discrete frequencies in both transmission and reflection spectra. The analogy of the CCBG with a fiber Bragg grating is shown. The grating was tested for the potential application as a strain-sensing device.

Song Jianmei - One of the best experts on this subject based on the ideXlab platform.

  • Coaxial Cable signal transmission analysis and fault location
    Proceedings of the 2nd International Conference on Robotics Control and Automation - ICRCA '17, 2017
    Co-Authors: Zou Chengxiao, Jia Qingzhong, Song Jianmei
    Abstract:

    In view of the high frequency signal transmission in Coaxial Cable, we can't adopt the ideal lumped parameter theory, and should use the transmission line theory [1]. Through the microwave equivalent circuit method and one - dimensional distribution equivalent circuit, we established the Coaxial Cable circuit model, which help us to analyze the characteristics of high-frequency signal transmission in the transmission line, mainly including characteristic impedance and the main influencing factors. Finally, combining with the established transmission model and the test result, we analyze the change of the characteristic impedance in the faulty Cable, and locate the fault of the Cable accurately, which is instructive for the better application of the Coaxial Cable.

Jun Fan - One of the best experts on this subject based on the ideXlab platform.

  • Control of Critical Coupling in a Coiled Coaxial Cable Resonator
    The Review of scientific instruments, 2014
    Co-Authors: Jie Huang, Jun Fan, Tao Wang, Tao Wei, Hai Xiao
    Abstract:

    This paper reports a coiled Coaxial Cable resonator fabricated by cutting a slot in a spring-like coiled Coaxial Cable to produce a periodic perturbation. Electromagnetic coupling between two neighboring slots was observed. By manipulating the number of slots, critical coupling of the coiled Coaxial Cable resonator can be well controlled. An ultrahigh signal-to-noise ratio (over 50 dB) at the resonant frequency band was experimentally achieved from a coiled Coaxial Cable resonator with 38 turns. A theoretic model is developed to understand the device physics. The proposed device can be potentially used as a high quality and flexibly designed band-stop filter or a sensor in structural health monitoring.

  • a Coaxial Cable fabry perot interferometer for sensing applications
    Sensors, 2013
    Co-Authors: Jie Huang, Hai Xiao, Lei Hua, Jun Fan, Tao Wang, Ming Luo
    Abstract:

    This paper reports a novel Coaxial Cable Fabry-Perot interferometer for sensing applications. The sensor is fabricated by drilling two holes half-way into a Coaxial Cable. The device physics was described. The temperature and strain responses of the sensor were tested. The measurement error was calculated and analyzed.

  • Coaxial Cable Bragg grating sensors for large strain measurement with high accuracy
    Proceedings of SPIE, 2012
    Co-Authors: Jie Huang, Jun Fan, Tao Wei, Xinwei Lan, Hai Xiao
    Abstract:

    In this paper, a new Coaxial Cable Bragg grating (CCBG) is developed as a strain sensor and the sensor's capacity for large range strain measurement in structural health monitoring (SHM) is demonstrated for the first time. The sensor device is comprised of regularly spaced periodic discontinuities along a Coaxial Cable. The discontinuities are fabricated using a computer numerical controlled (CNC) machine to drill holes in the Cable. Each discontinuity generates a weak reflection to the electromagnetic wave propagating inside the Cable. Superposition of these weak reflections produces a strong reflection at discrete frequencies that can be explained by Bragg grating theory. By monitoring the resonant frequency shift of the sensor's reflection or transmission spectra, strain measurement sensitivity of 20μe and a dynamic range of 50000μe (5%) were demonstrated for axial strain measurements. The experimental results show that the CCBG sensors perform well for large strain measurement needed in structural health monitoring (SHM).

  • Coaxial Cable bragg grating
    Applied Physics Letters, 2011
    Co-Authors: Tao Wei, Hai Xiao, Jie Huang, Jun Fan
    Abstract:

    This paper reports a Coaxial Cable Bragg grating (CCBG) fabricated by drilling holes into the Cable at periodic distances along the axial direction. Resonances were observed at discrete frequencies in both transmission and reflection spectra. The analogy of the CCBG with a fiber Bragg grating is shown. The grating was tested for the potential application as a strain-sensing device.

  • Coaxial Cable Bragg Grating Sensors for Large Strain Measurement
    2011
    Co-Authors: Jie Huang, Jun Fan, Tao Wei, Xinwei Lan, Yinan Zhang, Hai Xiao
    Abstract:

    In this paper, a new Coaxial Cable Bragg grating (CCBG) is developed as a strain sensor and the sensor's capacity for large range strain measurement in structural health monitoring (SHM) is demonstrated for the first time. The sensor device is comprised of regularly spaced periodic discontinuities along a Coaxial Cable. The discontinuities are fabricated using a computer numerical controlled (CNC) machine to drill holes in the Cable. Each discontinuity generates a weak reflection to the electromagnetic wave propagating inside the Cable. Superposition of these weak reflections produces a strong reflection at discrete frequencies that can be explained by Bragg grating theory. By monitoring the resonant frequency shift of the sensor's reflection or transmission spectra, strain measurement sensitivity of 20μe and a dynamic range of 50000μe (5%) were demonstrated for axial strain measurements. The experimental results show that the CCBG sensors perform well for large strain measurement needed in structural health monitoring (SHM).

Hai Xiao - One of the best experts on this subject based on the ideXlab platform.

  • Control of Critical Coupling in a Coiled Coaxial Cable Resonator
    The Review of scientific instruments, 2014
    Co-Authors: Jie Huang, Jun Fan, Tao Wang, Tao Wei, Hai Xiao
    Abstract:

    This paper reports a coiled Coaxial Cable resonator fabricated by cutting a slot in a spring-like coiled Coaxial Cable to produce a periodic perturbation. Electromagnetic coupling between two neighboring slots was observed. By manipulating the number of slots, critical coupling of the coiled Coaxial Cable resonator can be well controlled. An ultrahigh signal-to-noise ratio (over 50 dB) at the resonant frequency band was experimentally achieved from a coiled Coaxial Cable resonator with 38 turns. A theoretic model is developed to understand the device physics. The proposed device can be potentially used as a high quality and flexibly designed band-stop filter or a sensor in structural health monitoring.

  • a Coaxial Cable fabry perot interferometer for sensing applications
    Sensors, 2013
    Co-Authors: Jie Huang, Hai Xiao, Lei Hua, Jun Fan, Tao Wang, Ming Luo
    Abstract:

    This paper reports a novel Coaxial Cable Fabry-Perot interferometer for sensing applications. The sensor is fabricated by drilling two holes half-way into a Coaxial Cable. The device physics was described. The temperature and strain responses of the sensor were tested. The measurement error was calculated and analyzed.

  • Coaxial Cable Bragg grating sensors for large strain measurement with high accuracy
    Proceedings of SPIE, 2012
    Co-Authors: Jie Huang, Jun Fan, Tao Wei, Xinwei Lan, Hai Xiao
    Abstract:

    In this paper, a new Coaxial Cable Bragg grating (CCBG) is developed as a strain sensor and the sensor's capacity for large range strain measurement in structural health monitoring (SHM) is demonstrated for the first time. The sensor device is comprised of regularly spaced periodic discontinuities along a Coaxial Cable. The discontinuities are fabricated using a computer numerical controlled (CNC) machine to drill holes in the Cable. Each discontinuity generates a weak reflection to the electromagnetic wave propagating inside the Cable. Superposition of these weak reflections produces a strong reflection at discrete frequencies that can be explained by Bragg grating theory. By monitoring the resonant frequency shift of the sensor's reflection or transmission spectra, strain measurement sensitivity of 20μe and a dynamic range of 50000μe (5%) were demonstrated for axial strain measurements. The experimental results show that the CCBG sensors perform well for large strain measurement needed in structural health monitoring (SHM).

  • Coaxial Cable bragg grating
    Applied Physics Letters, 2011
    Co-Authors: Tao Wei, Hai Xiao, Jie Huang, Jun Fan
    Abstract:

    This paper reports a Coaxial Cable Bragg grating (CCBG) fabricated by drilling holes into the Cable at periodic distances along the axial direction. Resonances were observed at discrete frequencies in both transmission and reflection spectra. The analogy of the CCBG with a fiber Bragg grating is shown. The grating was tested for the potential application as a strain-sensing device.

  • Coaxial Cable Bragg Grating Sensors for Large Strain Measurement
    2011
    Co-Authors: Jie Huang, Jun Fan, Tao Wei, Xinwei Lan, Yinan Zhang, Hai Xiao
    Abstract:

    In this paper, a new Coaxial Cable Bragg grating (CCBG) is developed as a strain sensor and the sensor's capacity for large range strain measurement in structural health monitoring (SHM) is demonstrated for the first time. The sensor device is comprised of regularly spaced periodic discontinuities along a Coaxial Cable. The discontinuities are fabricated using a computer numerical controlled (CNC) machine to drill holes in the Cable. Each discontinuity generates a weak reflection to the electromagnetic wave propagating inside the Cable. Superposition of these weak reflections produces a strong reflection at discrete frequencies that can be explained by Bragg grating theory. By monitoring the resonant frequency shift of the sensor's reflection or transmission spectra, strain measurement sensitivity of 20μe and a dynamic range of 50000μe (5%) were demonstrated for axial strain measurements. The experimental results show that the CCBG sensors perform well for large strain measurement needed in structural health monitoring (SHM).

Zou Chengxiao - One of the best experts on this subject based on the ideXlab platform.

  • Coaxial Cable signal transmission analysis and fault location
    Proceedings of the 2nd International Conference on Robotics Control and Automation - ICRCA '17, 2017
    Co-Authors: Zou Chengxiao, Jia Qingzhong, Song Jianmei
    Abstract:

    In view of the high frequency signal transmission in Coaxial Cable, we can't adopt the ideal lumped parameter theory, and should use the transmission line theory [1]. Through the microwave equivalent circuit method and one - dimensional distribution equivalent circuit, we established the Coaxial Cable circuit model, which help us to analyze the characteristics of high-frequency signal transmission in the transmission line, mainly including characteristic impedance and the main influencing factors. Finally, combining with the established transmission model and the test result, we analyze the change of the characteristic impedance in the faulty Cable, and locate the fault of the Cable accurately, which is instructive for the better application of the Coaxial Cable.