Yazaki Corporation

National Institute of Advanced Industrial Science and Technology

Jun Toyoizumi

Yoshitaka Ito

Kenzo Tanaka

Takaya Kondo

Nobuhisa Kaneko

Yasuhiro Fukuyama

A deterioration regeneration system includes a pre-post regeneration determination part configured to determine whether or not to execute, with respect to an electric contact to which an electrical or mechanical first external action is applied during an operation of a later-stage device, a deterioration regeneration process of regenerating a connection performance that has been deteriorated due to an increase in a contact resistance of the electric contact, and a deterioration regeneration part configured to execute a process of removing a foreign object present at the electric contact by applying a second external action to the electric contact, as the deterioration regeneration process, according to the determined result from the pre-post regeneration determination part, the second external action being of the same kind as the first external action and larger than the first external action.

Deterioration regeneration system and deterioration regeneration method

A deterioration degree diagnosis device includes a measurement unit and a diagnosis unit. The measurement unit measures an impedance related to a contact resistance of an electrical connection portion by measuring an AC voltage between metal members and an AC current flowing between the metal members in a state where an AC signal of a predetermined frequency is applied to an electric circuit that connects two metal members in contact via the electrical connection portion. The diagnosis unit diagnoses a deterioration degree of the electrical connection portion based on a reactance component value in the impedance measured by the measurement unit.

Deterioration degree diagnosis device and deterioration degree diagnosis method for electrical connection portion

Growing community of inventors

Makinohara, Japan

Jun Toyoizumi