The present invention provides a general four-port on-wafer high frequency de-embedding method. The method comprises: for each on-wafer de-embedding dummy, building a model considering the distributive nature of high frequency characteristics of the on-wafer de-embedding dummy; obtaining the intrinsic Y-parameter admittance matrix of said N on-wafer de-embedding dummies by calculation or simulation by using said models; and solving the equation set which the corresponding measurement and calculation or simulation data of said on-wafer de-embedding dummies satisfy for the elements of the related admittance matrices of the parasitic four-port network to be stripped in de-embedding and model parameters of models on which said calculation or simulation is based.

The present invention provides a system and method for multi-phase flow decomposition using electrical capacitance imaging techniques. The present invention provides a system and method to obtain permittivity distributions at a plurality of frequency markers using volume tomography image reconstruction to determine volume fraction of each phase and to produce images of the volume fraction for each phase.

A measurement device includes an electric field generator, an electric field detector, a thickness gauge, and a processor. The electric field generator generates an alternating current electric field. The electric field detector detects the alternating current electric field generated by the electric field generator. The thickness gauge measures a thickness of a measurement target in a non-contact manner. The processor derives a calibration curve representing a relationship between a specific dielectric constant and an intensity of an alternating current electric field. The measurement target is insertable between the electric field generator and the electric field detector. The electric field detector detects an intensity of the alternating current electric field attenuated by the measurement target. The processor calculates a specific dielectric constant of the measurement target based on the detected intensity of the alternating current electric field, the measured thickness, and the derived calibration curve.

A technique capable of reducing variations in measurement results of electrical resistance due to the assembly accuracy of a channel device is provided. A first lid member closes an upper opening of a measurement chamber of an intermediate member. An upper working electrode is disposed on a surface of the first lid member. The upper working electrode includes a first upper working portion and a second upper working portion. A dimension from a second edge of the first upper working portion to a first edge of the second upper working portion is greater than the width of the measurement chamber. A distance between the first upper working portion and the second upper working portion as measured in a width direction is smaller than the width of the measurement chamber.

Disclosed are a power conversion system and a control method therefor. The power conversion system includes a first voltage-dividing circuit, a second voltage-dividing circuit, a switch module, a control module, and a detection module. The first voltage-dividing circuit includes a first circuit, a third circuit and a first insulation impedance connected in parallel between a positive electrode of the power conversion system and the ground. The second voltage-dividing circuit includes a second circuit, a fourth circuit, and a second insulation impedance connected in parallel between the ground and a negative electrode of the power conversion system. The switch module is arranged in at least one of the first voltage-dividing circuit and the second voltage-dividing circuit. The control module is connected to the switch module. The detection module is connected to the first voltage-dividing circuit or the second voltage-dividing circuit.

A methodology for measuring the dielectric and magnetic properties of materials is provided. The method comprises a multi-section transmission line (TL) and multi-section fluidic channels. Two of the TL sections are incorporated with channel sections. The length-ratio of the two line-channel sections (LCS) is L:L. A network analyzer coupled to the TL can be configured to measure scattering parameters when the LCS have no material-under-measurement (MUM), one LCS has MUM, both LCSs have MUM. Then, the S-parameters are transformed to ABCD matrices. When L:L is 2:1, the propagation constant of the LCSs can be calculated with analytical formulas over the measured frequency range. When L:L is not 2:1, the propagation constant can be obtained with numerical root-searching algorithms. The properties of MUM can be extracted by use of models which relate the propagation constants with the given geometry and substrate of LCSs as well as the unknown MUM properties.

The present invention provides a system and apparatus for inspecting tendons and cable stays in bridges and structures using multi-frequency excitation of an ECVT sensor.

A storage battery includes a positive electrode layer, a negative electrode layer, and a separator disposed between the positive electrode layer and the negative electrode layer. The separator is provided in a form that includes a substance whose dielectric constant changes in response to temperature. The battery unit includes a calculation section that is configured to apply an AC signal to the positive electrode terminal and the negative electrode terminal of the storage battery and calculates the dielectric constant or capacitor capacity based on the response signal, and a temperature monitoring section that monitors the internal temperature of the storage battery based on the dielectric constant or capacitor capacity calculated by the calculation section.

A system to provide non-invasive, indirect, continuous, and linear measurement of fluid levels and aggregate soil moisture concentrations. A multilayer device implements a coplanar capacitor capable of measuring fluid levels outside the wall of the vessel containing the fluid. Additionally, the system measures fluid levels and soil moisture concentrations outside the wall of a sealed probe placed in the water or soil. The structure is shielded from surrounding electrical interference, can be manufactured in a cost-effective manner, and be tailored for different physical applications. The invention also includes an electronic circuit for measuring fluid levels and moisture concentrations that represents a robust design in terms of accuracy, noise suppression, calibration, and temperature stability.

To provide an electrode catalyst layer evaluation device, an electrode catalyst layer evaluation method, and a program, which are capable of reducing cost and man-hours. The electrode catalyst layer evaluation device includes the acquisition unit that acquires the hardness and loss tangent tan of the electrode catalyst layer of a fuel cell, and the crack occurrence rate estimation unit that estimates the crack occurrence rate of the electrode catalyst layer, based on the hardness and loss tangent tan acquired by the acquisition unit.