Hitachi, Ltd.

Hitachi Process Computer Engineering, Inc.

Yoshimi Fujimata

Takuma Nishimura

Hiroshige Kashiwabara

Jumpei Honda

Keiichi Nakane

Masakazu Okada

Shuji Ohno

Syoji Yamaguchi

Tetsuya Kawahara

Hidemasa Nakai

A reading device includes wireless slave devices that communicate via a multihop wireless network, a measuring unit that measures the state of an inspection target to generate measurement data, a measurement data analysis unit, and a failure cause analysis unit that analyzes a failure cause when the analysis of the failure cause analysis unit fails. The reading device transmits the measurement data to the data collecting device by associating the measurement data with failure cause information. The data collecting device includes a wireless master device, a measurement data acquisition unit that acquires measurement data from each reading device, a recording unit that records the measurement data when the measurement data is not associated with failure cause information, and a retry control unit that retries data acquisition according to the type of the failure cause when the measurement data is associated with the failure cause information.

Automatic inspection system, inspection target reading device for automatic inspection system, and control method for automatic inspection system

An automatic inspection system, which includes a wireless slave device having a reading device that acquires a physical quantity to be inspected and a wireless master device that receives measurement data of the physical quantity from the wireless slave device, is provided with a data collection device that collects the measurement data from the wireless slave device via the wireless master device in a constant cycle and detects a time zone in which the measurement data is non-acquirable by the reading device based on a result of the collection. The wireless master device performs control to avoid the wireless slave device from re-acquisition of the measurement data in the non-acquirable time zone based on a result of the detection of the non-acquirable time zone.

Automatic inspection system and automatic inspection method

In an information communication system for performing both point-to-point communication and point-to-multipoint communication between a host computer and terminals by using same lines while distributing loads of data communication, data communication report tables are provided on a main storage unit of the host computer for each type of communication. The data communication process is executed distributively at each CPU unit and communication interface unit of the host computer and at each control module of a communication control unit. A plurality of destination pattern tables indicating data destinations are provided for point-to-multipoint communication. For the point-to-multipoint communication, CPU unit designates a particular destination pattern table for each interface unit, and data transmission is requested to each control module in accordance with the destination pattern table.

Information communication system for point-to-point communication and

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Tokyo, Japan

Yoshimi Fujimata