Hitachi, Ltd.

Hitachi Information & Control Solutions, Ltd.

Hitachi Engineering Services Co., Ltd.

Hitachi Industry & Control Solutions, Ltd.

Yusaku Otsuka

Toshiki Shimizu

Hidenori Omiya

Wataru Sasaki

Noritaka Matsumoto

Shin Kokura

Naoya Mashiko

Iori Kobayashi

Yu Iwasaki

Akira Bando

Tatsuya Maruyama

Teruaki Sakata

Masamitsu Kobayashi

Manabu Sasamoto

Eiji Kobayashi

Masakazu Ishikawa

Satoru Funaki

Tomokazu Matsuzaki

Akihiro Onozuka

Shoji Yunoki

Shoichi Ozawa

Kazutaka Onishi

Hideyuki Yoshikawa

Ryuichi Murakawa

Akihiro Nakano

Joydeep Acharya

Masahiro Shiraishi

Yusuke Seki

Katsuhito Shimizu

Yasuhiro Kiyofuji

Hideaki Masuko

Tatsuyuki Ootani

Takashi Umehara

Yasuyuki Furuta

Ravneet Kaur

Takahiro Ohira

Sungho Kim

Yuusuke Seki

Hisashi Terae

Taisuke Ueta

Akira Bandou

Takenori Kasahara

Yu Watanabe

Ryo Fujita

Atsushi Suzuki

A method for computing and detecting image data drift. The method may include retrieving first segment information of a plurality of segments from a drift database; receiving a number of images from a sensor; partitioning each of the received images into segments of a predetermined number; generating second segment information; computing drift in values between the first segment information and the second segment information; and detecting drift based on the computed drift in values by combining the computed drift in segments to generate overall drift, and comparing the overall drift against a drift threshold.

Method to compute drift in image data before ml model inference

The present invention provides a control system that achieves both high reliability and versatility. A control systemof the present invention includes a control deviceincluding an operating system, non-real-time softwareexecuted on the operating system, and real-time softwareexecuted on the operating system, an execution time analysis unitthat inputs and analyzes execution time information of the non-real-time softwareand execution time information of the real-time software, and a real-time interface generation unitthat determines whether or not to generate binary data for updating processing of the control device from an analysis result of the execution time analysis unit.

Control system

A control system in which a plurality of controllers and a redundant controller are connected to a common network, the plurality of controllers are divided into a highly available controller and other normal controllers, the redundant controller obtains context data of the highly available controller to hold the context data in a memory, holds programs of the plurality of controllers in a non-volatile memory, and holds the program of the highly available controller in the memory, and an arithmetic unit substitutes processing of the highly available controller by using the context data and the program of the highly available controller held in advance in the memory when a failure occurs in the highly available controller.

Control system and control method therefor

A method, and apparatus for implementing the method, of resource allocation for a communication session in a network that connects a terminal device and a control device via one or more base stations is discussed herein. The method may include storing identifiers of a set of communication objects associated wide the terminal device. The method may further include acquiring information regarding a first set of resources associated with a first communication session for a first communication object in the set of communication objects. The method may also include allocating a second set of resources associated with a second communication session for a second communication object in the set of communication objects, where the second set of resources comprises a disjoint set of resources from the first set of resources.

Redundant communication system

In the conventional distributed control system, since each control device updates the data area at a timing when a control packet is received, in a case where there is a difference in communication delay between the control devices or in a case where the communication delay includes jitter, it is difficult to match the contents of data in all the control devices in a case of focusing on a certain moment during system operation. Therefore, depending on the start timing of a control application, the control application operates on the basis of different data between the control devices, thus limiting control performance improvement. Accordingly, time slots on the network are allocated according to the result of a calculation unit, and a cyclic memory synchronization update unit synchronizes the timing of reflecting data in the input/output and the cyclic memory and the timing of using data of a cyclic memory.

Control device and distributed control system

A control apparatus of the present invention is a control apparatus included in a distributed control system. The control apparatus includes a time synchronization unit configured to synchronize the control apparatus with another control apparatus included in the distributed control system in terms of time, a communication unit configured to receive information from the other control apparatus, an information holding unit configured to add synchronization time information to the information and hold the resulting information, an area setting unit configured to set an area of the information holding unit according to a time difference of the information, an information selection unit configured to select shared data from the information stored in the information holding unit, and a shared data storage unit configured to store the shared data selected by the information selection unit.

Control apparatus

Example implementations described herein are directed to a plurality of control functions connected via a communication network and synchronized, where the control functions communicate packets including control data, the function identifier for the function associated with the control data, and time identifier such as a time identifier representing the synchronized time associated with the control data. Example implementations determine control data associated with the function identifier and the time identifier from one or more packets that has the same function identifier and time identifier, received in the certain time period based on the time specified by the time identifier.

Redundant control system

In a control system including one or more control nodes and one or more I/O nodes connected to one or more devices and communicable with the control nodes, the control nodes execute at least one control program on a first OS, and the I/O nodes execute at least one I/O program on a second OS with higher punctuality. The control program generates a control command based on state control set in advance for the device and transmits the control command to the I/O node. The I/O program stores the control command received from the control node in a storage unit, and executes processing related to the device according to the control command stored in the storage unit.

Example implementations described herein generate plans for the deployment of functions involving the distribution function and the allocation of network resources based on the requirements of the distributed functions on the control system and the network information constituting the control system. Example implementations involve gathering requirements of the distributed functions constituting the distributed control system, information of the network, and information of the plurality of communication devices, and generating a plan for deployment of the distributed functions to corresponding ones of the plurality of communications devices and allocation of network resources to the corresponding ones of the plurality of communication devices based on the gathered requirements and the information of the network.

Control network planning

To provide an application execution apparatus that can achieve a real-time property of an application. An application execution apparatus () that executes an application including a data acquisition unit () that acquires data transmitted from an IO device and a data utilization unit () that utilizes the data acquired by the data acquisition unit (), includes: a first calculation device that implements the data acquisition unit () in a first space in which the application is able to be started after an occurrence of an event for starting the application within a time required for the application; a data linkage unit () that links the data acquired by the data acquisition unit () to the data utilization unit (); and a second calculation device that implements the data utilization unit () in a second space different from the first space.

Application execution apparatus and application execution method

The present invention provides a duplexed operation processor control system that includes operation processors, an I/O device, and at least one communication path that couples the operation processors to the I/O device, and at least one communication path that couples the operation processors with each other. The duplexed operation processor control system switches over either of the operation processors to be a primary operation processor that executes a control operation for a control target, and the other to be a secondary operation processor that is in a stand-by state, and the secondary operation processor snoops control data synchronously when the primary operation processor acquires the control data from the control target.

Duplexed operation processor control system, and duplexed operation processor control method

A program editor creates a program-edit screen for a control system based on element data for representing circuit elements and operators and their attribute values. Here, the circuit elements and operators are components of sequential programs which constitute functions of the control system. The program editor which edits the element data on the created program-edit screen judges whether the data for representing the circuit elements and the operators is protected-function data or non-protected-function data and displays assembly sets of programs for implementing predetermined functions constituted by circuit elements and operators to which accesses are authenticated on the program-edit screen in a display mode different from those of the other assembly sets.

Maintenance tool of control systems

In a control apparatus which transmits/receives data from a central processing unit via a serial transfer channel to a communication control unit, and groups/distributes data of input/output units from the communication control unit via a parallel transfer channel, the control apparatus initiates a diagnosing unit of the parallel transfer channel in response to an instruction issued from the central processing unit, and diagnosis the input/output units subsequent to the diagnosis of the transmission channel. Data input/output timing of the input/output unit is also instructed from the central processing unit, so that the central processing unit can suppress lowering of response speeds caused by the diagnoses, and can maintain the periodicity of the data input/output.

Control apparatus, control method and control program

A control apparatus for an input-output device includes a hardware part and a software part, in which a controller in the hardware part carries out a control operation in accordance with a signal from the input-output device, outputs a result of the control operation to a process, and has a timer unit to be excited at a constant period; and the software part has an information process part, a control process part, and an interrupt control unit to switch over the information process part and control process part one another, in which the interrupt control unit suspends an execution of the information process part to execute the control process part in priority and resume the information process part by switching over to the information process part from the control process part, when the execution of the control process part is terminated.

Control apparatus for process input-output device

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Hitachiota, Japan

Yusaku Otsuka