Hitachi, Ltd.

Komatsu Corporation

Mitsubishi Electric Corporation

Mitsubishi Electric Corpotation

Takuma Nishimura

Hiroshige Kashiwabara

Jumpei Honda

Ryo Nakano

Kazuo Ono

Yuichi Igarashi

Reiso Sasaki

Hidemasa Nakai

Masanori Ikari

Ryo Fujita

Takeshi Yuasa

Motomi Watanabe

Ryota Enomoto

Hideki Tonooka

Kentaro Yajima

Yoshimi Fujimata

Ryoichi Inada

Kei Takezawa

Akihiro Nakamura

Tomohiro Takahashi

Koji Matsuda

Masahiro Yoshida

Yuya Ogi

Takeshi Oshima

Masahiro Shiraishi

Masataka Nishi

Tsukasa Fujimori

Koichiro Nagata

Hidenori Yukawa

Shinji Arai

Masaki Shiohara

Yoshiharu Sato

Kyousuke Moriguchi

Hirotaka Moribe

Shinichi Tsunoo

Osamu Kodama

Atsushi Tanji

Hironori Adachi

Provided is a transmission device monitoring system including: a diagnostic frequency estimation unit that extracts a plurality of diagnostic frequency candidate groups from a frequency region separated by a specific frequency or more using at least current information on a motor, a gear ratio of a transmission device, and the number of stages of the transmission device, and estimates a frequency satisfying a specific relationship from frequencies obtained in the plurality of diagnostic frequency candidate groups as a diagnostic frequency; and an abnormality diagnosis unit that diagnoses abnormality of the transmission device using at least the one diagnostic frequency estimated by the diagnostic frequency estimation unit.

Transmission device monitoring system

A sensor device includes: a sensor data acquisition unit that acquires sensor data of a measurement target from a sensor; a sensor data analysis unit that analyzes the data acquired by the sensor data acquisition unit; an extraction data setting unit that sets extraction conditions indicating a part desired to be extracted from among all the sensor data; a specific condition extraction unit that extracts a part from among all the sensor data based on an analysis result and the extraction conditions; and a user interface unit that allows a user to input/output information. Further, the user interface unit includes simple condition setting means by which a simple condition being at least one or more of the extraction conditions among the extraction conditions can be set in the sensor data analysis unit, and detection result display means that displays data satisfying the simple condition in the sensor data analysis unit.

Sensor device, data acquisition method, and current monitoring system

A wireless endpoint provided in an automatic inspection system includes a sound collection unit that collects sounds produced by an inspection target, an analysis unit that analyzes the collected sound and obtains a degree of difference between the collected sound and a normal sound learned in advance as an analysis result, a wireless communication unit that wirelessly transmits data including the analysis result to a wireless base station, and a power supply unit that supplies power to the above units. The wireless base station manages the data received from the wireless endpoint. In response to a request from a monitoring terminal that monitors the status of the inspection target, the wireless base station transmits the analysis result retrieved from the data to the monitoring terminal. The monitoring terminal performs a process of disclosing a status of the inspection target determined from the analysis result.

Automatic inspection system

A sound inspection system that can reduce power consumption is provided. A sound inspection systemthat determines a state based on a sound of an inspection target objectincludes a sound sensor devicethat collects the sound of the inspection target object, analyzes the collected sound, and transmits an analysis result, and a sound data determination devicethat determines a state of the inspection target object based on the analysis result from the sound sensor device. The sound sensor device transmits, as the analysis result, intensities of the collected sound for each predetermined frequency set in advance.

Sound inspection system and sound inspection method

A virus detection system uses a USB relay device that can support not only the use of USB mass storage but also the use of other USB devices such as a mouse. The USB relay device has a connection switching unit for switching a connection state between a first connector unit to which a USB client is connected and a second connector unit connected to a USB host controller. The virus detection system includes a virus check engine unit that performs a virus check of a file acquired from the USB client or the USB host controller via the USB relay device. On the basis of a result of the check by the virus check engine unit, the USB relay device performs switching control of the connection state by the connection switching unit.

Virus detection system and virus detection method using USB relay device

A wheel loader includes a boom, a forward clutch, and a controller configured to control hydraulic pressure of hydraulic oil supplied to the forward clutch. The controller performs clutch hydraulic pressure control for bringing the forward clutch into a semi-engagement state by controlling the hydraulic pressure of the hydraulic oil supplied to the forward clutch on condition that the wheel loader advances while raising the boom in at least a loaded state.

Wheel loader and method for controlling wheel loader

There are provided an automatic inspection system and an automatic inspection method capable of suppressing power consumption of a measurement device. A measurement device includes a sensor unitthat measures an inspection target, a parameter management unitthat determines a predetermined parameter set for the sensor unit based on parameter determination information received from a data collection device, and a measurement data generation unitthat generates measurement data by analyzing data obtained by the sensor unit measuring the inspection target by using the predetermined parameter. The data collection device includes a parameter determination information generation unitthat generates parameter determination information, and a measurement data acquisition unitthat specifies the parameter determination information for the measurement device, requests the measurement device to acquire the measurement data, and stores the measurement data acquired from the measurement device.

Automated inspection system and automated inspection method including a data collection device that generates exposure parameter determination information

An inspection target reading device includes a wireless slave station that performs communication via a wireless network, a measurement unit that measures a state of an inspection target, and an analysis unit that generates measurement data, and transmits the measurement data from the wireless slave station via the wireless network. An automatic inspection system includes a wireless master station that communicates with each inspection target reading device via the wireless network, a data acquisition unit that acquires the measurement data from each inspection target reading device through a wireless master station, a data storage unit that stores the measurement data, a determination condition storage unit that stores determination conditions related to the measurement data, and an inspection unit that outputs predetermined measurement data selected from the stored measurement data and a predetermined determination condition corresponding to the predetermined measurement data among the stored determination conditions in association with each other.

Automatic inspection system and method for controlling automatic inspection system

A coaxial line is provided which includes: a first columnar conductor disposed inside a multilayer substrate such that one end thereof is coupled to a first stripline and that the other end thereof is coupled to a second stripline; and one or more second columnar conductors penetrating the multilayer substrate such that one end thereof is coupled to a ground layer and that the other end thereof is coupled to a ground layer, the first columnar conductor acting as an inner conductor, and the second columnar conductors acting as outer conductors. Each of the first and second striplines is coupled to an open stub acting as resonators and a matching conductor acting as capacitance matching elements.

High frequency filter

A communication system includes: storage to store location information of each of a plurality of devices capable of wireless multi-hop communication, site configuration information including location and size information of an obstacle present at a site of the plurality of devices, and communication quality information between devices; a determination unit determines whether a repeater needs to be added for each of the plurality of devices, based on communication quality information; and a decision unit calculates an expected value related to attenuation of received power between the first and second devices caused by the obstacle, and decides a location for the determination unit to add the repeater based on location information of the first device determined, location information of the second device different from the first device and communicated with the first device through the repeater, the communication quality information between the first and second device, and the site configuration information.

Communication system, communication management method, and network management apparatus

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

A current detector and a detection unit are provided. The current detector is connected to at least one of drive current lines of a rotary machine. The detection unit performs an orthogonal detection on a main frequency detected by the current detector, and extracts a magnitude of a sideband wave. Then, a state of the rotary machine is diagnosed from the magnitude of the extracted sideband wave.

Rotary machine diagnostic system

A data collection apparatus collecting data from a terminal device connected through a communication path, comprising a schedule managing unit determining a schedule transmitting a data acquisition request to the terminal device according to managed timing data, a transmission amount adjusting unit adjusting a transmission amount of the data acquisition request, and a collected data managing unit managing the data collected from the terminal device, in which the schedule managing unit manages a start point time that is a time at which a data collection from each terminal device starts, a collection period that is an interval of the data collection from each terminal device, a retransmission interval that is a time until the data acquisition request is retransmitted when the data collection from the terminal device fails, and a retransmission number that is the number of times to retransmit the data acquisition request as the timing data.

Data collection apparatus and data collection method

A USB management system using a USB relay device includes a management terminal having a management database for recording management information of a USB client registered in advance. The USB relay device has a connection switching unit for switching a connection state between a first connector portion to which the USB client is connected and a second connector portion which is connected to a USB host controller. When the USB client is connected to the first connector portion, the USB relay device reads management information of the USB client and transmits the management information to the management terminal, and the management terminal inquires of the management database about the management information of the USB client transmitted from the USB relay device, compares the management information with the management information of the USB client registered in advance, and determines the connection state by the connection switching unit.

USB management system and USB management method using USB relay device

A substrate is used as one tube wall of a hollow waveguide, the substrate including a strip line wired in an inner layer, a first ground surface formed on a front surface, and a second ground surface formed on a part of a back surface. As a result of such a configuration, a waveguide strip line transducer having the same dimension as the external dimension of the hollow waveguide can be obtained.

Waveguide to strip line transducer including a waveguide wall forming substrate having an end surface bonded to a second conductor, and a power feed circuit formed therefrom

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Tokyo, Japan

Takuma Nishimura