Hitachi, Ltd.

Hitachi Solutions, Ltd.

Nobuhiro Kakeno

Toshihiro Yamada

Hiroshi Yoshikawa

Hisashi Endou

Ryoji Nakagawa

Masanori Kitaoka

Masanori Miyagi

Hiroto Nagayoshi

Hisashi Endo

Yasuhiro Ozawa

Takuma Terada

Hiroaki Nasu

Yasunori Hama

Hideya Isaka

Sana Imakubo

Yuuichi Terazaki

Provided is a welding management system that appropriately manages welding. The welding management system () includes a plurality of local magnetic sensors (to) provided around a target joining position (K) and a correction magnetic sensor () curved to surround the target joining position (K). A data processing unit () generates information of a joining state of the target joining position (K) based on a difference between a detection value of each of the plurality of the local magnetic sensors (to) and a detection value of the correction magnetic sensor ().

Welding management system

A manufacturing monitoring assistance device includes: a model creation unit creating a computation model when a product as a sample is normal, based on a three-dimensional form acquired from the product; a simulation unit creating a corrective computation model when the product is abnormal, by adding a sample of an abnormal portion in the product to the created computation model, and performing a simulation on each of the computation model and the corrective computation model; and a monitoring method determination unit determining a method for monitoring a manufacturing process for the product, based on an abnormality index being a difference between an output from a sensor as a result of the simulation performed on the computation model and an output from a sensor as a result of the simulation performed on the corrective computation model, and causing an output device to display the determined method and the abnormality index.

Manufacturing monitoring assistance device, manufacturing monitoring assistance method, and manufacturing monitoring assistance program

Provided is a manufacture and sales strategy planning method comprising a step of determining, based on information related to a sales plan of a plurality of products and a production capacity of a production facility to produce each product, whether there is any spare capacity in the production capacity of the production facility in relation to the sales plan for each of the products, a step of applying one among a plurality of profit improvement strategies, according to an availability of the spare capacity, to each product determined in this step, and calculating an improvement effect of each product, a step of selecting, based on each calculation result obtained in this step, a specific product among the plurality of products in which the improvement effect has exceeded a set value with regard to each of the plurality of profit improvement strategies, a step of extracting, for each profit improvement strategy, an item which satisfies a restricting condition of sale or production of the specific product selected in this step and which configures the specific product, and a step of planning a manufacture and sales strategy related to the items extracted in this step, and selecting one or more specific item strategies based on the improvement effect, wherein a supply and demand plan is simulated by reflecting the improvement effect of the selected strategy.

Manufacture and sales strategy planning method and device thereof

A work operation analysis systemincludes: a deviant operation analysis unitthat analyzes a work video obtained by photographing work of a worker on a work process basis and, in the case where a deviant operation different from normal work has been detected, identifies the occurrence timing of the deviant operation; a work video accumulation unit (a normal work video accumulation unitand a deviant work video accumulation unit) that accumulates a normal work video obtained by preliminarily photographing normal work and a deviant work video obtained when the deviant operation occurred; and a display unit (a display input device) that displays the normal work video and the deviant work video having predetermined time including the occurrence timing of the deviant operation.

Work operation analysis system and work operation analysis method

A stress distribution measurement device includes: a first magnetostrictive sensor and a second magnetostrictive sensor each including an excitation coil that excites AC magnetism in a measurement target using alternating current, and a detection coil to which alternating current is induced due to the AC magnetism flowing in the measurement target; an excitation circuit that applies a first excitation voltage to the excitation coil of the first magnetostrictive sensor and applies a second excitation voltage to the excitation coil of the second magnetostrictive sensor, the second excitation voltage having a phase or a waveform different from the first excitation voltage; and a detection circuit that includes a first detector that performs synchronous detection of current flowing in the detection coil of the first magnetostrictive sensor based on the first excitation voltage and a second detector that performs synchronous detection of current flowing in the detection coil of the second magnetostrictive sensor based on the second excitation voltage.

Stress distribution measurement device and stress distribution measurement method

The disclosure provides a joining process line monitoring system capable of preventing joining quality deterioration and operation delay. A joining process line monitoring systemincludes a joining phenomenon data acquisition partconfigured to acquire a joining phenomenon of a joining subject member as phenomenon data; an operation state data acquisition partconfigured to acquire a joining operation state of the joining subject member as operation state data; an evaluation data calculation unitconfigured to perform time synchronization of the acquired phenomenon data and the acquired operation state data, and associate the acquired phenomenon data and the acquired operation state data with each joining operation location, so as to calculate evaluation data; a difference data extraction unitconfigured to extract a difference between the evaluation data and reference data set in advance as difference data; an abnormal location determination unitthat determines that a portion having a large difference from the joining phenomenon is an abnormal location; and a presentation unitconfigured to present the abnormal location of a joining portion of the joining subject member based on the difference data.

Joining process line monitoring system

There are provided a welding monitoring system which can multidimensionally monitor a welding portion with high accuracy and a monitoring method thereof, by using a relatively simple configuration. There is provided a welding monitoring system which monitors a subject, including: a mechanical portion; and an imaging portion, in which the mechanical portion includes a transport arm which transports the subject, a subject holding portion which holds the subject, and an energizing device which causes welding with respect to the subject to be performed, and in which the imaging portion includes imaging means for obtaining imaging data of the subject, a data recording portion which records the imaging data, an analyzing portion which extracts predetermined characteristics from the imaging data, a comparison determination portion which compares the extracted characteristics and normal characteristics to each other to determine the presence or absence of abnormality, and a determination result output portion which outputs a determination result by the comparison determination portion.

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Tokyo, Japan

Nobuhiro Kakeno