Yokogawa Electric Corporation

Yosuke Ishii

Yukiyo Akisada

Nobuo Okabe

Kazunori Miyazawa

Kenji Oishi

Ken'ichi Kamada

Tetsuya Ishikawa

Hiroaki Tanaka

Yoshiaki Tanaka

Satoshi Kato

Hiroaki Kanokogi

Yasuki Sakurai

Sho Fujita

Minako Terao

Yota Furukawa

Tomohiro Kuroda

Shugo Sakatani

Provided is a data recording apparatus including a key exchange unit for exchanging a first encryption key with a system in response to authentication by the system, a data collection unit for collecting measurement data obtained by measuring a physical quantity associated with a measurement target, a data recording unit for recording the measurement data, and a data transmission unit for transmitting the measurement data encrypted using the first encryption key to the system. In addition, provided is a system including a key management unit for exchanging a first encryption key with a data recording apparatus in response to authentication of the data recording apparatus, a data obtaining unit for obtaining measurement data obtained by measuring a physical quantity associated with the measurement target encrypted by the data recording apparatus using the first encryption key, and a data management unit for managing the measurement data using a distributed ledger technology.

Data recording apparatus, data recording method, recording medium having recorded thereon data recording program, system, method, and recording medium having recorded thereon program

A maintenance information sharing device includes a maintenance record obtainer configured to obtain a maintenance record of a maintenance target, a maintenance record storage configured to associate the maintenance record obtained by the maintenance record obtainer with identification information for identifying the maintenance target, the maintenance record storage storing the maintenance record associated with the identification information, a maintenance information generator configured to generate maintenance information based on the maintenance record associated with the identification information and stored by the maintenance record storage, a maintenance information storage which stores the maintenance information generated by the maintenance information generator, a searcher configured to search the maintenance information stored by the maintenance information storage based on the identification information, and a maintenance information provider configured to provide the maintenance information searched by the searcher.

Maintenance information sharing device, maintenance information sharing method, and non-transitory computer readable storage medium

An information collection system includes an information collection terminal and an information collection server. The an information collection terminal includes an obtainer configured to obtain specification information for specifying a non-connection device which is not connected to a system which is capable of collecting information, a display configured to display an information input screen according to the specification information, an input device configured to input information of the non-connection device into the information input screen, and a communicator configured to transmit, to a network, input information which has been input into the information input screen. The information collection server includes a first collector configured to collect the input information transmitted from the information collection terminal through the network.

Information collection system, information collection terminal device, information collection server, and information collection method

A position information authoring system according to one aspect of the present invention includes a plurality of position information devices in a plant and a position information authoring apparatus. Each of the plurality of position information devices is configured to input a position information into the position information authoring apparatus, the position information represents a three-dimensional absolute position of each of the plurality of position information devices. The position information authoring apparatus is configured to manage a physical position of each physical equipment in the plant and physical positions of the plurality of position information devices, based on a three-dimensional plant model which includes virtual equipments and marks a virtual position of each of the plurality of position information devices.

Position information authoring system, position information authoring apparatus, and position information authoring method

A slow change detection system includes: an image acquisition unit adapted to acquire a photographed image including consecutive images of a monitored object; a reference image acquisition unit adapted to acquire a reference image corresponding to the photographed image of the monitored object; a reference image area extraction unit adapted to extract, from the reference image, a reference image area that is an area corresponding to a photographed area of the photographed image; a change detection unit adapted to acquire a change area that is an area of the photographed image which is different from the reference image area and acquire a slow change area by excluding, from the acquired change area, a sudden change area derived from a history of the change area; and a display control unit adapted to superimpose and display information indicating the slow change area on the photographed image.

Slow change detection system

An ultrasonic pipe measurement apparatus includes: a plurality of ultrasonic transceivers discretely disposed on a pipe wall of a pipe; and a control unit configured to control the plurality of ultrasonic transceivers and detect a generation point of damage caused in the pipe based on an ultrasonic signal exchanged between the ultrasonic transceivers.

Ultrasonic pipe measurement apparatus

The invention realizes a wireless control system capable of reducing loads on a wireless network and gateway nodes and improving reliability of the system. The wireless control system for collecting data from a plurality of wireless nodes constituting a wireless network to a supervisory node via gateway nodes, wherein said each gateway node and said each wireless node have group IDs assigned thereto in advance and said each wireless node selects a route having the most excellent communication quality of routes leading to the gateway nodes having the same group ID as a self-node and transmits data to the selected route.

Wireless control system

A wireless network construction system includes: first wireless nodes being previously installed in a wireless network; a wireless node installation support terminal carried in a location capable of conducting wireless communication, the wireless node installation support terminal serving as a wireless node being previously installed in the wireless network; and a second wireless node being newly installed in the wireless network and adjacent to the wireless node installation support terminal. The second wireless node performs a procedure of participation in the wireless network via the wireless node installation support terminal using the wireless communication. The wireless node installation support terminal allocates and distributes a network address to the second wireless node upon performing the procedure of participation in the wireless network. The second wireless node performs a path search and establishes a wireless line between the first wireless nodes and the second wireless node.

Wireless network construction system

In a wireless network system for interconnecting a wireless network and another network different from the wireless network, the wireless network system includes: a plurality of wireless nodes for establishing the wireless network; a control device connected to the other network; and a plurality of gateways for interconnecting the wireless network and the other network, wherein the wireless node searches a path from a gateway candidate list, selects a gateway on an optimal path based on information collected in searching the path, and transfers data to the control device through the gateway on the optimal path.

Wireless network system

It is to improve the robustness and the data transfer reliability of a network. When the destination node is the sixty sixth wireless device D, the second wireless device Ddetermines that there is no destination node among neighboring nodes based on the parent-and-child-node information of the first neighboring node information to transfer the data to the first wireless device Das a parent node. The first wireless device Dcan communicate within a communicable range ARand memorizes network information of the zeroth wireless device D, the second wireless device D, the seventh wireless device D, the eighth wireless device D, and the seventeenth wireless device D. The first wireless device Ddetermines that the sixty sixth wireless device Das a destination node exists at the neighborhood of the seventh wireless device Dto transfer the data to the seventh wireless device D. Then, the seventh wireless device Ddetermines that the sixty sixth wireless device Das a neighboring node is the destination node to transfer the data to the device.

Growing community of inventors

Tokyo, Japan

Yosuke Ishii