Abstract: An air conditioner includes an outdoor device and an indoor device. The indoor device includes a control unit, a storage unit, and an infrared sensor unit that detects a human by detecting infrared rays. The infrared sensor unit includes thermal-image acquisition elements that detect infrared rays to acquire thermal image data and a sensor control unit that controls the thermal-image acquisition elements. When receiving the thermal image data from the infrared sensor unit, the control unit determines whether a communication error has occurred in each of the thermal-image acquisition elements. The control unit sets a thermal-image acquisition element that has a number of error determinations equal to or larger than a certain number as a communication-error established element. The control unit does not acquire thermal image data from the communication-error established element.

Abstract: A storage unit stores threshold data indicating first and second thresholds. A heater control determination unit reads the threshold data from the storage unit, enables a heater control when an outdoor air temperature is equal to or lower than the first threshold, and disables the heater control when the outdoor air temperature is equal to or higher than the second threshold. A heater operation control unit sets a heater operation to be always-off when the heater control is disabled, and ON/OFF controls the heater operation based on a relation between an indoor temperature and a set temperature when the heater control is enabled. A reception unit receives a threshold designation signal input by a user and designating at least one of the first and second thresholds. A threshold setting unit sets, based on designation by the received threshold designation signal, the threshold data stored in the storage unit.

Abstract: To provide an air conditioner 1 that includes an outdoor device and an indoor device and performs air conditioning inside a room. The indoor device includes a control unit, a storage unit, and an infrared sensor unit that detects a human by detecting infrared rays. The infrared sensor unit includes thermal-image acquisition elements that detect infrared rays to acquire thermal image data, and a sensor control unit that controls the thermal-image acquisition elements. At a time of reception of the thermal image data transmitted from the infrared sensor unit, the control unit determines whether an error has been occurred in communication for each of the thermal-image acquisition elements. The control unit sets a thermal-image acquisition element whose sum of number of times of determination that an error has occurred in the communication is equal to or larger than a certain number, as a communication-error established element.

Abstract: An air-conditioning apparatus includes a receiving unit configured to receive remote control information transmitted from a remote control device, an adapter configured to receive remote information including operation details conveyed through an external network, an information outputting unit configured to output information when the adapter receives the remote information or when the receiving unit receives the remote control information, and a controller configured to control operations of the information outputting unit. The controller includes an information adjustment unit configured to cause the information outputting unit to output different information when the adapter receives the remote information and when the receiving unit receives the remote control information.

Abstract: A storage unit stores threshold data indicating first and second thresholds. A heater control determination unit reads the threshold data from the storage unit, enables a heater control when an outdoor air temperature is equal to or lower than the first threshold, and disables the heater control when the outdoor air temperature is equal to or higher than the second threshold. A heater operation control unit sets a heater operation to be always-off when the heater control is disabled, and ON/OFF controls the heater operation based on a relation between an indoor temperature and a set temperature when the heater control is enabled. A reception unit receives a threshold designation signal input by a user and designating at least one of the first and second thresholds. A threshold setting unit sets, based on designation by the received threshold designation signal, the threshold data stored in the storage unit.

Abstract: A power converter is configured to include an inverter which converts a DC output into an AC voltage of a predetermined frequency, and a high voltage generator which receives an output from output terminals of the inverter and boosts the output to a desired high DC voltage. The high voltage generator includes a transformer, and the primary windings of the transformer are connected to the output terminals of the inverter in parallel by conductive wires connected to both ends of each primary winding. Further, a current sensor is provided to detect a current flowing through each of the primary windings, and a control unit determines abnormalities of a path of the inverter and the primary windings on the basis of a value of the current sensor.

Abstract: An air-conditioning apparatus includes a receiving unit configured to receive remote control information transmitted from a remote control device, an adapter configured to receive remote information including operation details conveyed through an external network, an information outputting unit configured to output information when the adapter receives the remote information or when the receiving unit receives the remote control information, and a controller configured to control operations of the information outputting unit. The controller includes an information adjustment unit configured to cause the information outputting unit to output different information when the adapter receives the remote information and when the receiving unit receives the remote control information.

Abstract: In order to prevent breakage of a power converter, a current which flows into an inverter (3) in the power converter is detected. The inverter (3) is equipped with two or more primary windings in parallel with each other. The current flowing through each of the primary windings is detected by current sensors (17, 6). A control unit (22) determines from the outputs of the current sensors that an abnormality occurs, when current does not flow through any of the primary windings.

Abstract: There is provided an inverter device that can detect short-circuit of a switching element of an inverter circuit even under a load condition that a PWM driving signal is very small. The inverter device is provided with means for independently supplying a short-circuit detecting PWM driving signal to respective switching elements S1 to S4 at different timings before the inverter circuit 21 supplies a PWM driving signal for supplying power to a high voltage generating device 31, successively turning on the respective switching elements S1 to S4 with the short-circuit detecting PWM driving signal, detecting on-voltages of the switching elements S1 to S4 which are connected to the turned-on switching elements S1 to S4 in series, and detecting overcurrent or short-circuit states of the switching elements S1 to S4.

Abstract: A discharging part of an X-ray generator using a one-side earthed X-ray tube is earthed is identified on the basis of the tube voltage detected value and the tube current detected value. For the identification, the X-ray generator comprises a device comprising tube voltage decrease slope calculating means (S4), tube current increase calculating means (S4), first judging means (S5) for judging whether or not the slope of the tube voltage decrease exceeds its acceptable value, second judging means (S6) for judging whether or not the increase of the tube current exceeds its acceptable value, and discharge portion identifying means (S7, S8) for identifying the discharging part which is in the X-ray tube or a high-voltage generating unit on the basis of the results of the judgments made by the first and second judging means. The identified discharging part is displayed on display means (S9).

Abstract: There is provided an inverter device that can detect short-circuit of a switching element of an inverter circuit even under a load condition that a PWM driving signal is very small. The inverter device is provided with means for independently supplying a short-circuit detecting PWM driving signal to respective switching elements S1 to S4 at different timings before the inverter circuit 21 supplies a PWM driving signal for supplying power to a high voltage generating device 31, successively turning on the respective switching elements S1 to S4 with the short-circuit detecting PWM driving signal, detecting on-voltages of the switching elements S1 to S4 which are connected to the turned-on switching elements S1 to S4 in series, and detecting overcurrent or short-circuit states of the switching elements S1 to S4.

Abstract: A discharging part of an X-ray generator using a one-side earthed X-ray tube, i.e., the anode or cathode is earthed is identified on the basis of the tube voltage detected value and the tube current detected value.