Hitachi Power Solutions Co., Ltd.

Tsuru Educational Foundation

Naoki Miyakoshi

Hisae Shibuya

Toujirou Noda

Tadashi Suzuki

Shunji Maeda

Shigeyoshi Chikuma

Shouzou Miyabe

Masami Kusano

Toshiaki Kobari

An objective is to identify the health state of mechanical equipment and provide information usable for determining maintenance work timing or the like. A health management system includes a time-series data acquisition unit configured to acquire multi-dimensional sensor data and environmental data from mechanical equipment; a first discrimination unit configured to quantify the equipment state of the mechanical equipment by a statistical method using normal data as learning data; a second discrimination unit configured to quantify the health state indicating the performance or quality of the mechanical equipment by a statistical method using normal data; and an output unit configured to display and/or output to the outside the quantified equipment state and health state.

Health management system, fault diagnosis system, health management method, and fault diagnosis method

The anomaly diagnosis system includes the state measure calculator acquiring sensor data from sensors in a machine facility as time series data; an approximation formula calculator calculating a state measure being an index indicating a state of the machine facility, such as anomaly and a performance by a statistical method in which the time series data is used as learned data; and a state measure estimating unit estimating the state measures until future time using the approximation formula. Whenever the latest time series data is acquired, the reference period in which the time series data corresponding to the state measure referred to calculate the approximation formula by the reference period setting unit, is successively extended by addition of time when the latest time series data is acquired. The approximation formula calculator calculates the approximation formula using the state measure of the time series data acquired in the reference period.

Anomaly diagnosis system and anomaly diagnosis method

Growing community of inventors

Hitachi, Japan

Naoki Miyakoshi