HEAT PUMP

A heat pump including a boiler is disclosed. The heat pump may include the boiler which may be selectively operated based on a temperature of external air or an electric power rate per unit heat quantity. 1. A heat pump , comprising:an outdoor device configured to compress a refrigerant;a hydro-device configured to heat-exchange the compressed refrigerant with water;a boiler configured to heat water circulating through the hydro-device or water supplied from a commercial water supply system;a radiation heater configured to perform heating using the water heated by the hydro-device or the boiler; anda controller configured to control the outdoor device, the hydro-device, and the boiler.2. The heat pump as claimed in claim 1 , wherein the boiler is operated claim 1 , when a temperature of external air is equal to or less than a predetermined first temperature below approximately 0° C. claim 1 , and wherein the hydro-device is operated claim 1 , when the temperature of the external air is equal to or greater than the predetermined first temperature.3. The heat pump as claimed in claim 2 , wherein the first temperature is equal to or greater than approximately −7° C. and equal to or less than approximately −3° C.4. The heat pump as claimed in claim 2 , wherein claim 2 , when the temperature of the external air is equal to or less than a predetermined second temperature above approximately 0° C. claim 2 , water circulating through the radiation heater after being heat-exchanged with refrigerant in the hydro-device passes through the boiler.5. The heat pump as claimed in claim 4 , wherein the first temperature is equal to or greater than approximately −7° C. and equal to or less than approximately −3° C. claim 4 , and wherein the second temperature is equal to or greater than 3° C. and equal to or less than approximately 7° C.6. The heat pump as claimed in claim 2 , wherein when the temperature of the external air is equal to or greater than the predetermined first ...

HEAT PUMP

A heat pump including a boiler is disclosed. The heat pump may include a quick-hot-water-supply tank and the boiler, which may be operated selectively based on a temperature of external air or an electric power rate per unit heat quantity. 1. A heat pump , comprising:an outdoor device comprising a compressor;a hydro-device comprising at least one heat exchanger that heat-exchanges refrigerant supplied by the outdoor device with water;a boiler configured to selectively heat water circulating through the hydro-device or water supplied from a commercial water supply system;a quick-hot-water-supply tank configured to heat and store water supplied by the commercial water supply system using the water heat-exchanged with the refrigerant in the hydro-device or to store, after heating, the water supplied by the commercial water supply system; anda controller configured to control the outdoor device, the hydro-device, and the boiler.2. The heat pump as claimed in claim 1 , further comprising:a radiation heater configured to perform heating using water heated by at least one of the hydro-device or the boiler, wherein water circulating through the hydro-device and the radiation heater selectively passes through the boiler based on a temperature of external air.3. The heat pump as claimed in claim 1 , wherein the refrigerant supplied to the hydro-device by the outdoor device is heat-exchanged with water circulating through the radiation heater and the quick-hot-water-supply tank.4. The heat pump as claimed in claim 3 , wherein the hydro-device comprises:a first heat exchanger that heat-exchanges the refrigerant supplied by the outdoor device with water circulating through the radiation heater; anda second heat exchanger that heat-exchanges the refrigerant supplied by the outdoor device with water circulating through the quick-hot-water-supply-tank.5. The heat pump as claimed in claim 1 , wherein the boiler is operated when a temperature of external air is equal to or less than ...

SENSOR UNIT

The present disclosure provides a sensor unit that includes a mounting portion fixed on one side of the sensor unit; an elastic member including a first end and a second end, the first end being disposed on the mounting portion; a transmission portion configured to transmit a detectable signal, the transmission portion disposed on the second end of the elastic member; a reception portion configured to receive a reflection of the detectable signal; and a controller that determines whether the reflected signal indicates an impact, motion, or impending impact. 1. A sensor unit , comprising:a mounting portion fixed on one side of the sensor unit;an elastic member including a first end and a second end, the first end being disposed on the mounting portion;a transmission portion configured to transmit a detectable signal, the transmission portion disposed on the second end of the elastic member;a reception portion configured to receive a reflection of the detectable signal; anda controller that determines whether the reflected signal indicates an impact, motion, or impending impact.2. The sensor unit of claim 1 , wherein the detectable signal is selected from the group consisting of an infrared signal claim 1 , a light signal claim 1 , a sound signal claim 1 , an ultrasonic signal claim 1 , or any combination thereof.3. The sensor unit of claim 1 , wherein the detectable signal is selected from the group consisting of an infrared signal.4. The sensor unit of claim 1 , wherein the transmission portion is configured to move in response to the impact claim 1 , motion claim 1 , or impending impact.5. The sensor unit of claim 1 , wherein the transmission portion includes an infrared LED that transmits an infrared signal.6. The sensor unit of claim 5 , further comprising:a transmission signal processing controller that modulates the infrared signal; anda LED driver that adjusts the modulated signal of the transmission signal processing control portion and transmits the infrared ...

Heat pump

Heat pump

A heat pump including a boiler is disclosed. The heat pump may include a quick-hot-water-supply tank and the boiler, which may be operated selectively based on a temperature of external air or an electric power rate per unit heat quantity.

Medical robotic system and method of controlling the same

A medical robotic system and method for controlling the system are provided to precisely measure contact force during the minimally invasive surgery. In one embodiment, a medical robotic system includes an input device, a robotic arm assembly, a surgical instrument operably coupled to the robotic arm assembly, the surgical instrument including a contact detection unit configured to detect a contact of the surgical instrument with tissue of a patient, a current measurement unit configured to measure a joint current in the robotic arm assembly, a position/velocity measurement unit configured to measure a joint position and a joint velocity in the robotic arm assembly, an external force calculation unit configured to calculate size and direction of a contact force caused by the contact of the surgical instrument to the tissue based on the joint currents, positions and velocities measured when the contact is occurred and measured when the contact is not occurred.

Digital TV and method for controlling same

Disclosed are a digital TV and a method for controlling same. The method for controlling a digital TV according to one embodiment of the present invention includes: displaying a user interface (UI) capable of selecting the standby mode for a power-off operation; and disconnecting the power source for a display panel so as to enter the standby mode when the standby mode is set through the UI in the power-off operation, and a power-off command is received. The standby mode includes a lower standby mode based on the operation of the digital TV and a network function, and the digital TV in the standby mode stops AV channel communication and performs SI channel communication.

Electronic device and method of controlling the same

An electronic device and a method of controlling the electronic device are provided. The electronic device includes a broadcast receiving unit that receives a broadcast content, a communication unit that receives power information associated with a mart grid, the power information including at least one of per-time slot electricity rate information and power demand information, and a controller that selectively performs one of an operation of outputting the broadcast content received through the broadcast receiving unit and an operation of storing the received broadcast content in an internal memory or an external memory considering the received power information.