US 2009/0102618 A1 · Uninterruptible Power Supply Unit

Abstract

[Object] To allow multiple power line communication (PLC) devices to communicate with one another via power lines without being affected by the power supply state of an uninterruptible power supply unit coupled among the PLC devices. [Solving Means] Multiple modem means 32 for transmitting or receiving a PLC signal are installed, each corresponding to a power receiving terminal 2 and one or more power supply terminals 3 in an uninterruptible power supply unit 1 in a one-to-one manner. Multiple low-pass filter circuit 7 and 18 for eliminating a PLC signal are installed to a power line between each of the multiple modem means 32 and a power supply circuit 10. Control means 40 and 41 transmit a PLC signal based on a PLC signal received by one of the multiple modem means 32 from at least one of the other modem means 32.

Claims16

Dependent claims

An uninterruptible power supply unit comprising:

a power supply circuit that generates a predetermined alternating current power from an alternating current power supplied to a power receiving terminal or from a backup power and supplies the generated power to one or more power supply terminals;
a plurality of modem means each installed corresponding to the power receiving terminal and each of the one or more power supply terminals in a one-to-one manner, and
transmitting or receiving a power line communication (PLC) signal;
a plurality of low-pass filter circuits each coupled to a power line between each of the modem means and the power supply circuit, and eliminating the PLC signal;
and
a control means that makes at least one of the other modem means transmit a PLC signal, based on a PLC signal received by one of the modem means.

3 more elements

An uninterruptible power supply unit comprising:

a power supply circuit that charges a battery using alternating current power supplied to a power receiving terminal, converts a power contained in the battery into predetermined alternating current power using an inverter circuit, and supplies the converted power to a plurality of power supply terminals;
a plurality of modem means each installed corresponding to the power receiving terminal and the power supply terminals in a one-to-one manner, and transmitting or receiving a power line communication (PLC) signal;
a plurality of low-pass filter circuits each coupled to a power line between each of the modem means corresponding to the power supply terminals and the power supply circuit, and eliminating the PLC signal;
and
a control means that makes at least one of the other modem means transmit a PLC signal based on a PLC signal received by one of the modem means.

2 more elements

Dependencies are inferred from the claim text.

Uninterruptible Power Supply Unit

Life of this patent

Uninterruptible Power Supply Unit

Life of this patent

Abstract

Claims16