Abstract: Provided is a sensor network system including sensor master devices (15A to 15D) which receive detection information obtained by sensors (11A to 11F) through wireless communication, a data server (17) which acquires the detection information from the sensor master devices (15A to 15D) through power line communication, and notification devices (13A, 13B) which receive notification information from the data server (17) to perform notification, in which the sensor master devices (15A to 15D) are connected to the sensors (11A to 11F) and the notification devices (13A, 13B), and the data server (17) determines an object to be notified in accordance with, for example, a detection position which is detection information for at least one of an object to be notified and notification contents, on the basis of the acquired detection information.

Abstract: Provided is a sensor network system including sensor master devices (15A to 15D) which receive detection information obtained by sensors (11A to 11F) through wireless communication, a data server (17) which acquires the detection information from the sensor master devices (15A to 15D) through power line communication, and notification devices (13A, 13B) which receive notification information from the data server (17) to perform notification, in which the sensor master devices (15A to 15D) are connected to the sensors (11A to 11F) and the notification devices (13A, 13B), and the data server (17) determines an object to be notified in accordance with, for example, a detection position which is detection information for at least one of an object to be notified and notification contents, on the basis of the acquired detection information.

Abstract: Disclosed is a direct current power line communication apparatus, by which communication between electronic apparatuses with a direct current voltage line there between can be stabilized. The direct current power line communication apparatus, i.e., a direct current power line communication apparatus that transmits signals using the direct current voltage line (15a), is provided with: a PLC communication control unit (29), which controls the transmitting unit (27) connected to the direct current voltage line (15a); and a voltage detecting unit (30), which detects the voltage of the direct current voltage line (15a), and notifies the PLC communication control unit (29) of the detected voltage. The PLC communication control unit (29) transmits information, including the voltage information, to other direct current power line communication apparatus via the transmitting unit (27).

Abstract: A charging control apparatus (1) that controls charging of a plurality of vehicles connected via a power line is provided with an electrical storage section (41) that stores power supplied from a power source, a communication section that receives information relating to supply power from the plurality of vehicles, a power amount calculation section (43) that calculates a supply power amount for the plurality of vehicles based on the information, and a control section that, if the supply power amount exceeds a second threshold value combining a remaining charge amount of the electrical storage section (41) and a contractual power amount, controls supply power for the plurality of vehicles so as to become smaller than the second threshold value.

Abstract: A charging apparatus that enables power line communication to be performed even via a charging apparatus. This charging apparatus is provided in a vehicle having an electrical storage apparatus that stores power supplied to a power supply inlet, a wheel driving section that rotates a wheel by means of power stored in the electrical storage apparatus, and an in-vehicle device that is connected to the storage apparatus via a power line; and has an AC/DC conversion section that converts power supplied from the power supply inlet from alternating-current to direct-current and outputs this to the electrical storage apparatus, and a capacitor that causes a power line communication signal input from the power supply inlet to bypass the AC/DC conversion section.

Abstract: There is provided a power supply apparatus capable of supplying information as a power line communication signal superimposed on a voltage of a commercial frequency, although currents of the commercial frequency are not supplied to power receiving side external equipment, and capable of supplying power to a specific external apparatus together with the power line communication signal, by controlling supply of the currents of the commercial frequency to the external apparatus.

Abstract: A first communication apparatus 100 transmits a pilot signal which was generated by a pilot signal generation section 14, at predetermined timing, and detects an unbalance component of a transmission line 300 at the time of pilot signal transmission in an unbalance component detection section 13, and controls a transmission signal in such a manner that an unbalance component is reduced by a transmission control section 12 on the basis of the detected unbalance component.

Abstract: Provided are a power line communication device and the like capable of keeping attenuation of electric power of a control signal to a minimum. The power line communication device includes a communication unit (220) and a switch unit (SW). The communication unit (220) is connected in parallel to a PV panel (10) that is connected in series to a power line (PL), and communicates the control signal relating to power generation by the PV panel (10) through the power line (PL). The switch unit (SW) is connected in parallel to the communication unit (220).

Abstract: An electricity generation controller for controlling an electrical energy production of a photo voltaic panel is provided. The electricity generation controller includes a control section that controls an output of the photo voltaic panel within a first range, a signal processing section that processes a predetermined signal., and an output range change section that changes an output range of the photo voltaic panel controlled by the control section from the first range to a second range in accordance with the predetermined signal processed by the signal processing section, wherein the second range is broader than the first range.

Abstract: A charging control apparatus (1) that controls charging of a plurality of vehicles connected via a power line is provided with an electrical storage section (41) that stores power supplied from a power source, a communication section that receives information relating to supply power from the plurality of vehicles, a power amount calculation section (43) that calculates a supply power amount for the plurality of vehicles based on the information, and a control section that, if the supply power amount exceeds a second threshold value combining a remaining charge amount of the electrical storage section (41) and a contractual power amount, controls supply power for the plurality of vehicles so as to become smaller than the second threshold value.

Abstract: A charging apparatus that enables power line communication to be performed even via a charging apparatus. This charging apparatus is provided in a vehicle having an electrical storage apparatus that stores power supplied to a power supply inlet, a wheel driving section that rotates a wheel by means of power stored in the electrical storage apparatus, and an in-vehicle device that is connected to the storage apparatus via a power line; and has an AC/DC conversion section that converts power supplied from the power supply inlet from alternating-current to direct-current and outputs this to the electrical storage apparatus, and a capacitor that causes a power line communication signal input from the power supply inlet to bypass the AC/DC conversion section.

Abstract: Disclosed are a power source device and a vehicle having increased reliability as backup in the event of a power cut, even when the power of the vehicle is used during a power cut. A power source device (3) transmits by way of power cable (5) control information for controlling a vehicle (6) in the event of a power cut. The vehicle (6) supplies power for an accumulator (10) to the power source device (3) by way of the power cable (5) in accordance with the control information received, and reports to the power source device (3) information regarding the remaining charge of the accumulator (10). Furthermore, the power source device (3) supplies power from the accumulator (10) to each electrical appliance within a residence (2). A display device (9) displays information regarding the remaining charge of the accumulator (10).

Abstract: Disclosed is a direct current power line communication apparatus, by which communication between electronic apparatuses with a direct current voltage line there between can be stabilized. The direct current power line communication apparatus, i.e., a direct current power line communication apparatus that transmits signals using the direct current voltage line (15a), is provided with: a PLC communication control unit (29), which controls the transmitting unit (27) connected to the direct current voltage line (15a); and a voltage detecting unit (30), which detects the voltage of the direct current voltage line (15a), and notifies the PLC communication control unit (29) of the detected voltage. The PLC communication control unit (29) transmits information, including the voltage information, to other direct current power line communication apparatus via the transmitting unit (27).

Abstract: There is provided a power supply apparatus capable of supplying information as a power line communication signal superimposed on a voltage of a commercial frequency, although currents of the commercial frequency are not supplied to power receiving side external equipment, and capable of supplying power to a specific external apparatus together with the power line communication signal, by controlling supply of the currents of the commercial frequency to the external apparatus.

Abstract: A relay apparatus includes a plurality of connecting terminals, such as a modem connecting terminal, a power line connecting terminal, an electric appliance connecting terminal and an antenna line connecting terminal; a selector that selects at least one connecting terminal from among the plurality of connecting terminals to transmit and receive a communication signal; and a control circuit that controls the selector. The relay apparatus further includes a first communication filter that passes signals in a frequency band used for communication by a power line communication modem and that blocks signals in other frequency bands, and a second communication filter that passes signals in a frequency band used for communication by another electric appliance and that blocks signals in other frequency bands.

Abstract: Provided is a multi-carrier communication apparatus, power line communication circuit, and multi-carrier communication method capable of decreasing omission of carrier detection even when a plurality of communication apparatuses are simultaneously transmitting signals at the state of time discord. Digital signals transmitted from a digital signal-processing unit 1 are converted into analog signals by an analog circuit unit 2 and then transmitted from a pair of lines 61 and 62 via a communication transformer 3. The digital signal-processing unit 1 has a frequency carrier detecting unit 10 which detects the existence of a carrier on the basis of a frequency characteristic of the received signal and the frequency carrier detecting unit 10 detects the carrier by taking correlation between sub-carriers adjacent to each other at every other interval.

Abstract: A terminating device enables power line communication to be performed while suppressing degradation of the communication quality without decreasing the communication efficiency. The terminating device includes power supply plugs, a terminating circuit, a changeover switch, and power jack terminals, which are housed in an adapter case. The terminating circuit has an impedance corresponding to the impedance between power lines in the used frequency band of power line communication and is connected or disconnected between the power supply plugs by the changeover switch.

Abstract: A terminating device enables power line communication to be performed while suppressing degradation of the communication quality without decreasing the communication efficiency. The terminating device includes power supply plugs, a terminating circuit, a changeover switch, and power jack terminals, which are housed in an adapter case. The terminating circuit has an impedance corresponding to the impedance between power lines in the used frequency band of power line communication and is connected or disconnected between the power supply plugs by the changeover switch.

Abstract: A first communication apparatus 100 transmits a pilot signal which was generated by a pilot signal generation section 14, at predetermined timing, and detects an unbalance component of a transmission line 300 at the time of pilot signal transmission in an unbalance component detection section 13, and controls a transmission signal in such a manner that an unbalance component is reduced by a transmission control section 12 on the basis of the detected unbalance component.

Abstract: Provided is a multi-carrier communication apparatus, power line communication circuit, and multi-carrier communication method capable of decreasing omission of carrier detection even when a plurality of communication apparatuses are simultaneously transmitting signals at the state of time discord. Digital signals transmitted from a digital signal-processing unit 1 are converted into analog signals by an analog circuit unit 2 and then transmitted from a pair of lines 61 and 62 via a communication transformer 3. The digital signal-processing unit 1 has a frequency carrier detecting unit 10 which detects the existence of a carrier on the basis of a frequency characteristic of the received signal and the frequency carrier detecting unit 10 detects the carrier by taking correlation between sub-carriers adjacent to each other at every other interval.