Hioki E.e. Corporation

Yutaka Ashida

Koki Nakazawa

Hideo Watanabe

Kenta Ikeda

Atsushi Nomura

Shunsuke Suzuki

A current measurement component including a bridging portion bridging a pair of side surface portions, a pair of coaxial components attached to the pair of side surface portions, respectively, each coaxial pair including an inner conductor that extends through a hole formed in a corresponding side surface portion of the pair of side surface portions, a connection portion electrically connecting the inner conductors of the pair of coaxial components, and a tube-like portion enclosing the connection portion with a gap formed between the tube-like portion and an outer peripheral portion of the connection portion. The pair of side surface portions and the bridging portion are electrically conductive and electrically connected, and the tube-like portion includes a base end portion electrically connected to a first side surface portion of the pair of side surface portions and a distal end portion electrically separated from the outer conductor of coaxial component pairs.

Current measurement component, current measurement device, and current measurement method

A flexible sensor configured to detect a physical amount of a measurement target in a state surrounding the measurement target includes a sensor cable configured to detect the physical amount of the measurement target and a holding portion on which a base end portion of the sensor cable is mounted, the holding portion having a groove portion in which a distal end portion of the sensor cable is fitted from a side surface.

Flexible sensor and measuring apparatus

A current detector includes: a current sensor that is constructed using a Rogowski coil, detects a current flowing in a measured object, and outputs a detection signal corresponding to a current value of the current; a transfer line that is constructed of a distributed constant line and transfers the detection signal; an impedance converting circuit that is provided between the current sensor and the transfer line and has an input impedance equal or substantially equal to a characteristic impedance of the current sensor; an integrator circuit that integrates the detection signal inputted via the transfer line and outputs an output signal indicating a current value of the current; and a resistance circuit that has a resistance value that is equal or substantially equal to a characteristic impedance of the transfer line and is connected in series between the transfer line and the integrator circuit.

Growing community of inventors

Ueda, Japan

Yutaka Ashida