Abstract: According to one embodiment, a memory stores a first information including a positional relationship among a plurality of positional candidates, a second information including an influence on the plurality of positional candidates due to at least any of an attenuation and a reflection of a radio wave by an object located at a periphery of the plurality of positional candidates, and a third information including a first received signal strength indicator of the radio wave transmitted from a first wireless communication device and received by a second wireless communication device. A processor estimates a position of the second wireless communication device from the plurality of positional candidates, based on a first value as the first received signal strength indicator corrected with a first correction value based on the second information, and a plurality of first distances between the first wireless communication device and each of the plurality of positional candidates.

Abstract: A data processing apparatus in accordance with the embodiment of the present invention includes a reception power data storage, reference data storage, and a processor. The reception power data storage stores reception power data that contains a plurality of reception power values of a radio signal, which is transmitted from the wireless communication apparatus, obtained by a plurality of measurement apparatuses. The reference data storage stores reference data which is used to determine the state of the wireless communication apparatus. The processor determines the state of the wireless communication apparatus, which has transmitted the radio signal, on the basis of the reception power data and reference data.

Abstract: According to some embodiments, there is provided a power electronics device including: a controlling unit, a determining unit, a confirming unit and a determining unit. The controlling unit performs surveillance/control concerning an input/output of power to a power line with other power electronics devices connected via the power line. The determining unit determines a master device which is a subject of the surveillance/control and a slave device which is controlled by the master device, based on power characteristic information of the other power electronics devices from among the other power electronics devices and the power electronics device. The confirming unit confirms whether the master device and the slave device determined by the determining unit are matched with the master device and the slave device determined by the other power electronics devices. The determining unit permits a start of the surveillance/control when matching is determined by the confirming unit.

Abstract: According to one embodiment, there is provided a charge/discharge instruction apparatus including: a communicating unit, a communication frequency deciding unit, an information collecting unit and a charge/discharge managing unit. The communicating unit communicates with a battery storage system. The communication frequency deciding unit decides a collection frequency of Information related to the battery storage system according to a state of the battery storage system. The information collecting unit collects the information from the battery storage system at the collection frequency decided in the communication frequency deciding unit. The charge/discharge managing unit controls at least one of charge and discharge of the battery storage system based on the information collected in the information collecting unit.

Abstract: According to one embodiment, there is provided a power electronics device including: a connector connected to a power line; a power controller; a connection detection processor; and a collision monitor. The power controller performs at least one of generating an electric signal to the power line and detecting an electric signal on the power line via the connector. The connection detection processor performs a connection detection process with use of the power controller to detect another power electronics device connected to the power line. The collision monitor monitors whether or not collision of electric signals occurs on the power line during the connection detection process and controls the connection detection processor according to a monitoring result of whether or not the collision of electric signals occurs.

Abstract: According to some embodiments, there is provided a power electronics device including: a controlling unit, a determining unit, a confirming unit and a determining unit. The controlling unit performs surveillance/control concerning an input/output of power to a power line with other power electronics devices connected via the power line. The determining unit determines a master device which is a subject of the surveillance/control and a slave device which is controlled by the master device, based on power characteristic information of the other power electronics devices from among the other power electronics devices and the power electronics device. The confirming unit confirms whether the master device and the slave device determined by the determining unit are matched with the master device and the slave device determined by the other power electronics devices. The determining unit permits a start of the surveillance/control when matching is determined by the confirming unit.

Abstract: According to one embodiment, there is provided a power electronics device including: a connection unit connected to a first power line; a communication unit; at least one unit of an electricity change unit and an electricity detection unit; and a control unit. The communication unit performs communication with other power electronics devices. The electricity change unit changes an energization state of the first power line and the electricity detection unit detects a change in the energization state of the first power line. The control unit specifies a power electronics device connected to the first power line out of the other power electronics devices using the communication unit and said at least one unit of the electricity change unit and the electricity detection unit.

Abstract: According to one embodiment, there is provided a charge/discharge instruction apparatus including: a communicating unit, a communication frequency deciding unit, an information collecting unit and a charge/discharge managing unit. The communicating unit communicates with a battery storage system. The communication frequency deciding unit decides a collection frequency of Information related to the battery storage system according to a state of the battery storage system. The information collecting unit collects the information from the battery storage system at the collection frequency decided in the communication frequency deciding unit. The charge/discharge managing unit controls at least one of charge and discharge of the battery storage system based on the information collected in the information collecting unit.

Abstract: A gateway apparatus includes a managing unit, an assigning unit, a receiving unit, a generating unit and a transmitting unit. The managing unit manages at least one storage battery group including a set of one or more storage battery systems selected from a plurality of storage battery systems. The assigning unit assigns a first storage battery group, which is one of the at least one storage battery group, to a first charge/discharge instruction apparatus. The receiving unit receives an instruction related to charge or discharge from the first charge/discharge instruction apparatus. The generating unit generates a first control order that is a control order for the storage battery systems belonging to the first storage battery group, based on the instruction. The transmitting unit transmits the first control order to the storage battery systems belonging to the first storage battery group.