The present disclosure aims to provide a power wiring network apparatus capable of constructing a highly portable power wiring network, without the need to maintain infrastructure. A power wiring network apparatus includes a wiring member, including first connectors and a conductive portion electrically connecting the first connectors to enable power supply, and circuit elements each including a second connector mechanically and electrically attachable to any first connector. The circuit elements include energy harvesting elements capable of outputting, from the second connector, power generated by energy harvesting and load elements capable of consuming power inputted from the second connector. At least some energy harvesting elements and load elements are capable of power line data communication via a power line including the first connectors and conductive portion.

A transmission device includes a pair of terminals connected to an electrical coupler via a pair of signal lines, a transmission unit connected to the pair of terminals via a pair of capacitors, a direct-current (DC) power supply connected in series between the pair of terminals without interposition of the pair of capacitors, and switches disposed on opposite sides of the DC power supply. A transmission device includes a pair of terminals connected to an electrical coupler via a pair of signal lines, a reception unit connected to the pair of terminals via a pair of capacitors, a load resistor and inductances connected in series between the pair of terminals without interposition of the pair of capacitors.

A first mobile device including a connection terminal configured to electrically connect to a second mobile device, a variable impedance device connected to the connection terminal, the variable impedance device configured to vary an impedance, processing circuitry configured to determine a power line communication (PLC) mode between the first mobile device and the second mobile device to be one of a low-speed PLC mode or a high-speed PLC mode, and control the impedance of the variable impedance device according to the determined PLC mode, and a PLC modem configured to receive power from the second mobile device or communicate data with the second mobile device based on the determined PLC mode.

A first mobile device including a connection terminal configured to electrically connect to a second mobile device, a variable impedance device connected to the connection terminal, the variable impedance device configured to vary an impedance, processing circuitry configured to determine a power line communication (PLC) mode between the first mobile device and the second mobile device to be one of a low-speed PLC mode or a high-speed PLC mode, and control the impedance of the variable impedance device according to the determined PLC mode, and a PLC modem configured to receive power from the second mobile device or communicate data with the second mobile device based on the determined PLC mode.

A first completion system with electrical isolation, electronics, and a first side of a coupler is installed in a borehole drilled in a geological formation. A second completion system is installed in the borehole after installation of the first completion system. The second completion system has a second side of the coupler aligned with the first side of the coupler and an umbilical which carries power from a surface of the geological formation to the second side of the coupler. Power is sent from the second side of the coupler to the first side of the coupler, from the first side of the coupler to a first side of the electrical isolation, and from the first side of the electrical isolation to a second side of the electrical isolation via an isolation barrier. The power at the second side of the electrical isolation is provided to the electronics.

Provided is a transmission device for transmitting and receiving data through a transmission channel. The transmission device includes a transmission circuit unit configured to transmit data to the transmission channel. When an overcurrent caused by a simultaneous transmission of data to the transmission channel is detected during data transmission, the transmission circuit unit increases an output resistance, which is a resistance value for an output to the transmission channel, to an resistance value corresponding to a characteristic of a facility equipment item that transmits data to the transmission channel at the same time as itself.

An encoding and transmitting system for a digital isolator system includes a transmitter for transmitting combined edge indicator signals through an isolation barrier, an encoder for generating the combined edge indicator signals based on first and second signals, a refresh clock generator for generating a refresh clock signal based on the first signal, and a refresh edge generator for masking at least a portion of the refresh clock signal, such that the portion of the refresh clock signal is not reflected in the second signal. The isolation barrier of the digital isolator system may be a capacitive isolation barrier for galvanically isolating a receiver from the transmitter. If desired, the refresh edge generator may include a refresh mask generator, one or more logic gates, and a glitch filter. A method of operating a digital isolator system is also described.

A transceiver comprising: a transmitter configured to transmit a signal comprising differential voltages to at least a first terminal and a second terminal; at least one receiver; a controller configured to provide control signals to the transmitter to cause the transmitter to transmit symbols, wherein each symbol comprises a predefined set of said differential voltages including at least a positive differential voltage and a negative differential voltage; and a signal balance module configured, for one or more symbols, to: determine a first duration of the positive differential voltage of said one or more symbols; determine a second duration of the negative differential voltage of said one or more symbols; based on determination of a difference between the first and second durations, provide for control of the controller or control of the transmitter to reduce the difference between the first and second durations in a further symbol relative to the one or more symbols.

The present invention relates to a data processing device (10) for a power over Ethernet system (100). The data processing device (10) comprises a data communicating unit (12) and a data processing unit (14). The data communicating unit (12) is configured for establishing a first connection (30) to a power sourcing equipment (24) and a second connection (32) to a powered device (26) and for intercepting central data transmitted from the power sourcing equipment (24) to the powered device (26). The data processing unit (14) is configured to process the intercepted central data in dependence of local data received from a local powered device (16). The local data comprises user input data, sensing data, or user input data and sensing data. The data communicating unit (12) is furthermore configured for transmitting the processed data to the powered device (26). Hence local data can influence central data for improving local control.

The present invention relates to a data processing device (10) for a power over Ethernet system (100). The data processing device (10) comprises a data communicating unit (12) and a data processing unit (14). The data communicating unit (12) is configured for establishing a first connection (30) to a power sourcing equipment (24) and a second connection (32) to a powered device (26) and for intercepting central data transmitted from the power sourcing equipment (24) to the powered device (26). The data processing unit (14) is configured to process the intercepted central data in dependence of local data received from a local powered device (16). The local data comprises user input data, sensing data, or user input data and sensing data. The data communicating unit (12) is furthermore configured for transmitting the processed data to the powered device (26). Hence local data can influence central data for improving local control.