Uninterruptible power supply unit
View Patent ↗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. 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.
1. 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,
wherein each of the modem means demodulates a received PLC signal into communication data, and modulates demodulated communication data into a PLC signal and transmits the modulated PLC signal; and the control means transmits communication data demodulated by the modem means to the modem means other than the modem means that has demodulated the communication data.
2. 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;
a routing table that stores a network address of a PLC device coupled to the uninterruptible power supply unit, wherein
each of the modem means demodulates a received PLC signal into communication data, and modulates demodulated communication data into a PLC signal and transmits the modulated PLC signal, and
the control means determines a destination of communication data demodulated by the modem means using the routing table and transmits the demodulated each communication data to the modem means corresponding to the destination so that the communication data is transmitted from the modem means corresponding to the destination.
3. 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;
detection means for detecting a PLC device coupled to each of the power supply terminals so as to make a notice of shutdown; and
a shutdown sequence table being used to make a notice of shutdown and storing a network address of the PLC device detected by the detection means, wherein
each of the modem means demodulates a received PLC signal into communication data, and modulates demodulated communication data to a PLC signal and transmits the modulated PLC signal,
the control means determines a destination of communication data demodulated by the modem means using the shutdown sequence table,
the communication data of which a destination is a network address registered in the shutdown sequence table is transmitted from the modem means corresponding to the determined destination, and
the communication data of which a destination is a network address not registered in the shutdown sequence table is transmitted from the modem means corresponding to the power receiving terminal unless the communication data has been received by the power receiving terminal.
4. The uninterruptible power supply unit according to claim 3 , wherein
after a notice of shutdown has been made according to the shutdown sequence table, the control means controls the modem means corresponding to the power supply terminals from which the notice has been made to transmit no PLC signal.
5. The uninterruptible power supply unit according to claim 3 , wherein
the shutdown sequence table includes a record corresponding to each of the power supply terminals, and a network address of the PLC device is registered in the shutdown sequence table in a manner that the network address is classified depending on the record according to each coupling; and,
even if the communication data is multi-cast data whose destination is not specified, the control means does not make the modem means transmit the communication data, the modem means being corresponding to the power supply terminals each of which no network address is registered in the record of the shutdown sequence table.
6. 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;
wherein each of the modem means demodulates a received PLC signal into communication data, and modulates demodulated communication data into a PLC signal and transmits the modulated PLC signal; and the control means transmits communication data demodulated by the modem means to the modem means other than the modem means that has demodulated the communication data.
7. 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;
a routing table that stores a network address of a PLC device coupled to the uninterruptible power supply unit, wherein
each of the modem means demodulates a received PLC signal into communication data, and modulates demodulated communication data into a PLC signal and transmits the modulated PLC signal, and
the control means determines a destination of communication data demodulated by the modem means using the routing table and transmits the demodulated each communication data to the modem means corresponding to the destination so that the communication data is transmitted from the modem means corresponding to the destination.
8. 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;
detection means for detecting a PLC device coupled to each of the power supply terminals so as to make a notice of shutdown; and
a shutdown sequence table being used to make a notice of shutdown and storing a network address of the PLC device detected by the detection means, wherein
each of the modem means demodulates a received PLC signal into communication data, and modulates demodulated communication data to a PLC signal and transmits the modulated PLC signal,
the control means determines a destination of communication data demodulated by the modem means using the shutdown sequence table,
the communication data of which a destination is a network address registered in the shutdown sequence table is transmitted from the modem means corresponding to the determined destination, and
the communication data of which a destination is a network address not registered in the shutdown sequence table is transmitted from the modem means corresponding to the power receiving terminal unless the communication data has been received by the power receiving terminal.
9. The uninterruptible power supply unit according to claim 8 , wherein
after a notice of shutdown has been made according to the shutdown sequence table, the control means controls the modem means corresponding to the power supply terminals from which the notice has been made to transmit no PLC signal.
10. The uninterruptible power supply unit according to claim 8 , wherein
the shutdown sequence table includes a record corresponding to each of the power supply terminals, and a network address of the PLC device is registered in the shutdown sequence table in a manner that the network address is classified depending on the record according to each coupling; and,
even if the communication data is multi-cast data whose destination is not specified, the control means does not make the modem means transmit the communication data, the modem means being corresponding to the power supply terminals each of which no network address is registered in the record of the shutdown sequence table.