Abstract: A magnetic flaw detection method includes a magnetization step (S2) of moving a magnet (21) in a predetermined direction (D) along a surface of an object (7) that is a magnetic body and subsequently removing the magnet (21) from the surface of the object (7) to magnetize a region (R) corresponding to a movement range of the magnet (21) on the object (7), a sensor arrangement step (S3) of arranging a magnetic sensor (35a) to be capable of measuring magnetic flux leakage (8) generated from an abnormal portion (72) of the region (R) that was magnetized in the object (7), and a detection step (S4) of detecting an abnormality in the region (R) with the magnetic sensor (35a) arranged by the sensor arrangement step (S3).

Abstract: A detection device includes a processor that detects a state change of a target object based on sensor value array data in which sensor values acquired from sensors are associated with array positions of the sensors, generates, with respect to two pieces of the sensor value array data for which the sensor values are acquired at different times, differential value array data, generates, from the differential value array data, two pieces of partial differential value array data, and determines presence or absence of a smooth change of the differential values in the differential value array data based on a result of threshold determination on similarity between the differential values in the two pieces of partial differential value array data and a result of threshold determination on a variance value of the differential value array data.

Abstract: A magnetic flaw detection method includes a magnetization step (S2) of moving a magnet (21) in a predetermined direction (D) along a surface of an object (7) that is a magnetic body and subsequently removing the magnet (21) from the surface of the object (7) to magnetize a region (R) corresponding to a movement range of the magnet (21) on the object (7), a sensor arrangement step (S3) of arranging a magnetic sensor (35a) to be capable of measuring magnetic flux leakage (8) generated from an abnormal portion (72) of the region (R) that was magnetized in the object (7), and a detection step (S4) of detecting an abnormality in the region (R) with the magnetic sensor (35a) arranged by the sensor arrangement step (S3).

Abstract: A wireless communication apparatus for performing wireless communication between wireless devices via a wireless communication network, wherein the wireless communication apparatus comprises: a packet processor for generating a first packet including first control information and discrimination information for discriminating between the first control information for connecting to the wireless communication network a set wireless device, which is a wireless device for which the setting of instrument information required for accessing the wireless communication network has been performed, and second control information for connecting to the wireless communication network a setting-required wireless device, which is a wireless device for which there is a need to set instrument information, and a second packet including the discrimination information and the second control information; and a wireless communication unit for transmitting the first packet and the second packet generated by the packet processor to th

Abstract: A communication device conforming with plural communication standards and having a storage storing a plurality of virtual stacks each having an application program and communication program that implements a protocol stack for communication by the application program. An executor executes the virtual stacks, and a switching controller switches the virtual stacks to be executed by performing a first processing in which at least one part of at least one of the virtual stacks is read from storage and stored into a memory of, and executed by, the executor. Then, in accordance with free capacity in the memory, at least one part of at least one of the virtual stacks executed in the first processing is deleted from memory. In a second processing at least one part of at least one of the virtual stacks is read from the storage and stored into the memory of, and executed by, the executor.

Abstract: 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.

Abstract: A data collection system includes a plurality of sensor modules each provided with a sensor unit, and a data collecting device. The data collecting device (200) is provided with: a clock output unit (201) which outputs a clock signal; an enable signal output unit (202) which outputs to a prescribed sensor module (100) an enable signal at intervals equal to or greater than the number of clock signals corresponding to the number of sensor modules (100); a counter (203) which counts the number of clock signals; and a sensor signal input unit (205) into which data output by the sensor modules (100) is input via a bus line, and which records said data in association with the count value.

Abstract: A data collection system includes a plurality of sensor modules each provided with a sensor unit, and a data collecting device. The data collecting device (200) is provided with: a clock output unit (201) which outputs a clock signal; an enable signal output unit (202) which outputs to a prescribed sensor module (100) an enable signal at intervals equal to or greater than the number of clock signals corresponding to the number of sensor modules (100); a counter (203) which counts the number of clock signals; and a sensor signal input unit (205) into which data output by the sensor modules (100) is input via a bus line, and which records said data in association with the count value.

Abstract: A communication system constructs a communication network using a hopping pattern designated in a router advertisement between a wireless communication device that transmits the router advertisement designating the hopping pattern of channel hopping and an opposite party communication device that receives the router advertisement. The wireless communication device comprises a receiver configured to receive a router advertisement transmitted from another wireless communication device, a generator configured to generate the hopping pattern that does not use the same channel at the same time with respect to a hopping pattern that is designated by the router advertisement received by the receiver, and a transmitter configured to transmit the router advertisement that designates the hopping pattern generated by the generator.

Abstract: A communication device communicating in conformance with a prescribed communication standard. The device includes a storage storing at least a first virtual program that includes a program implementing a first function of the communication device and a second virtual program that includes a program implementing a second function of the communication device. It also includes an executor configured to successively execute the first and second virtual programs, and a switching controller configured to read at least a part of either one of the first and second virtual programs from the storage, to store the part of either one of the first and second virtual programs into a memory of the executor, to execute the part of either one of the first and second virtual programs in the executor, thereby, to switch the first and second virtual programs to be executed in the executor.

Abstract: 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.

Abstract: 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.

Abstract: A management apparatus, which manages a wireless network constituted by a plurality of wireless communication devices each capable of performing a wireless communication using TDMA system, is characterized by comprising an extended link management unit that manages an extended link obtained by setting, to a link for which a channel and time slots to be used for wireless communications using the TDMA system are specified and for which a communication direction is determined, attribute information that characterizes the wireless communications performed by the wireless communication devices by use of the link.

Abstract: A provisioning device connected to field devices, which are objects of provisioning, via a provisioning network separated from a target network may include a router advertisement unit that designates a field device, which is an object of provisioning, among the field devices located within a router advertisement zone of the provisioning device to transmit a router advertisement to the designated field device in a unicast mode, a connection control unit that controls a connection to the provisioning network of the field device that receives the router advertisement, and a parameter setting unit that performs setting of network parameters in the field device, the network parameters being managed by the field device.

Abstract: A packet forwarding device performs forwarding of a packet between first and second wireless communication networks to which different identifiers are attached, and includes: a relay network that is interposed between the first and second wireless communication networks; a first processing unit that is connected to the first wireless communication network and performs first routing control by using first routing information in which the first wireless communication network and the relay network are defined as outgoing interfaces; and a second processing unit that is connected to the second wireless communication network and performs second route control by using second routing information in which the second wireless communication network and the relay network are defined as outgoing interfaces.

Abstract: An information setting method for a setting device includes the following processes. A first certificate and identification information are obtained from a wireless device to be caused to join a wireless network managed by a management device. The first certificate certifies that the wireless device is a formal wireless device and includes a first public key. The identification information is information that identifies the wireless device. A second certificate is obtained from the management device. The second certificate certifies that the management device is a formal management device and includes a second public key. Apparatus information required for the wireless device to join the wireless network is encoded using the first public key and is output to the wireless device. Management information including the apparatus information and the identification information associated with the apparatus information is encoded using the second public key and is output to the management device.

Abstract: A communication device conforming with plural communication standards and having a storage storing a plurality of virtual stacks each having an application program and communication program that implements a protocol stack for communication by the application program. An executor executes the virtual stacks, and a switching controller switches the virtual stacks to be executed by performing a first processing in which at least one part of at least one of the virtual stacks is read from storage and stored into a memory of, and executed by, the executor. Then, in accordance with free capacity in the memory, at least one part of at least one of the virtual stacks executed in the first processing is deleted from memory. In a second processing at least one part of at least one of the virtual stacks is read from the storage and stored into the memory of, and executed by, the executor.

Abstract: A communication device communicating in conformance with a prescribed communication standard includes a storage storing at least a first virtual program that includes a program implementing a first function of the communication device and a second virtual program that includes a program implementing a second function of the communication device, an executer configured to successively execute the first and second virtual programs, and a switching controller configured to read at least a part of either one of the first and second virtual programs from the storage, to store the part of either one of the first and second virtual programs into a memory of the executer, to execute the part of either one of the first and second virtual programs in the executer, after completion of the processing of the one virtual program, to delete at least a part of the one virtual program from the memory in accordance with free area in the memory, to read at least a part of the other virtual program of the first and second virtua

Abstract: 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.

Abstract: A management apparatus, which manages a wireless network constituted by a plurality of wireless communication devices each capable of performing a wireless communication using TDMA system, is characterized by comprising an extended link management unit that manages an extended link obtained by setting, to a link for which a channel and time slots to be used for wireless communications using the TDMA system are specified and for which a communication direction is determined, attribute information that characterizes the wireless communications performed by the wireless communication devices by use of the link.