Abstract: According to one embodiment, a thermocouple abnormality detection system including: a plurality of thermocouples each including a plurality of thermocouple wires housed in a sheath; a transmission signal conversion unit configured to convert a thermo-electromotive force generated by each of the plurality of the thermocouple wires to a transmission signal and to output the transmission signal; a transmission unit configured to transmit the transmission signal outputted from the transmission signal conversion unit; and an abnormality detection circuit configured to detect an abnormality of each of the plurality of the thermocouples by comparing, with each other, the transmission signals obtained from the plurality of thermocouple wires provided in each of the thermocouples.

Abstract: A signal transmission and reception system includes a transmitter adapted to transmit a signal by radio, and a receiver adapted to wirelessly receive the signal from the transmitter and transmit the signal to a monitoring and control device of a plant through a transmission cable connecting the receiver to the monitoring and control device, wherein the transmitter and the receiver are provided in the plant, and wherein the receiver is attached to a cable tray used to lay a cable other than the transmission cable.

Abstract: There is provided a protection device for a turbine exhaust chamber and a condenser, having, a condenser, a turbine exhaust chamber casing covering the steam turbine and the condenser, an atmosphere discharge disc for discharging atmosphere when a pressure reaches a first predetermined value, a temperature measuring unit for measuring a temperature in the turbine exhaust chamber casing, a first setter for setting a second predetermined value, an output unit for producing an external output, based on the measured temperature and the second predetermined value, when a pressure corresponding to the temperature becomes higher than or equal to the second predetermined value related to pressure or when the temperature becomes equal to or higher than the second predetermined value related to temperature, and a releasing unit for releasing the steam in the turbine exhaust chamber casing to an exterior when the output unit produces the external output.

Abstract: According to one embodiment, a thermocouple abnormality detection system including: a plurality of thermocouples each including a plurality of thermocouple wires housed in a sheath; a transmission signal conversion unit configured to convert a thermo-electromotive force generated by each of the plurality of the thermocouple wires to a transmission signal and to output the transmission signal; a transmission unit configured to transmit the transmission signal outputted from the transmission signal conversion unit; and an abnormality detection circuit configured to detect an abnormality of each of the plurality of the thermocouples by comparing, with each other, the transmission signals obtained from the plurality of thermocouple wires provided in each of the thermocouples.

Abstract: According to one embodiment, a temperature measurement system including: a plurality of thermocouples; a transmission signal conversion unit configured to convert, to a transmission signal, the thermo-electromotive force generated by each of the plurality of the thermocouple and configured to output the transmission signal; a plurality of transmission units configured to transmit the transmission signal outputted from the transmission signal conversion unit; a first connection unit configured to connect between each of the plurality of the transmission units; a second connection unit configured to connect at least one of the plurality of transmission units to a processing unit configured to process the transmission signal; and a housing unit configured to house at least the first connection unit.

Abstract: A reception apparatus for achieving demodulation in a radio communications system using M-sequence orthogonal modulation capable of achieving a good characteristic near the error rate characteristic obtained in the case of a synchronous detection system while suppressing an increase in the size of the hardware, including a signal reproducing circuit and a reflecting circuit having a reliability computing unit for computing a certainty of a value of a correlation energy as a reliability R for the correlation energy of every Walsh number, a correcting unit for obtaining a corrected correlation energy by introducing a corresponding reliability R with respect to the correlation energies, and a maximum energy selecting unit for selecting the maximum correlation energy from among obtained corrected correlation energies based on the same and demodulating a signal corresponding to a Walsh number corresponding to this maximum correlation energy as a received signal.

Abstract: An apparatus for achieving demodulation in a radio communications system using M-sequence orthogonal modulation capable of achieving a good characteristic near the error rate characteristic obtained in the case of a synchronous detection system while suppressing an increase in the size of the hardware, including a demodulation apparatus having a reliability computing unit for computing a certainty of a value of a correlation energy as a reliability R for the correlation energy of every Walsh number, a correcting unit for obtaining a corrected correlation energy by introducing a corresponding reliability R with respect to the correlation energies, and a maximum energy selecting unit for selecting the maximum correlation energy from among obtained corrected correlation energies based on the same and demodulating a signal corresponding to a Walsh number corresponding to this maximum correlation energy as a received signal.