566results about How to "Simple system structure" patented technology

In a hybrid water heater, a heat pump unit and a combustion heating unit are combined for heating water to be stored in a hot water tank. The combustion heating unit includes a combustor for heating water in a chamber by combustion operation. The chamber of the combustion heating unit communicates with the hot water tank through a first water port provided at an upper side of the hot water tank and a second water port provided at a lower side of the hot water tank, so that hot water heated in the chamber flows into the upper side in the hot water tank through the first water port, by using natural convection. Further, water in the hot water tank at the lower side flows from the second water port into the chamber.

A laser interferometer system for measuring roll angle around the direction of linear displacement comprises a light source of a frequency stabilized input beam (15) with two linear orthogonally polarized components which may or may not be of the same frequency, a polarizing beam splitting prism, two quarter-wave retardation plates, a corner cube retroreflector, a prism assembly, attached to the mechanical apparatus whose roll angle of travel is to be measured, a wedge mirror assembly, a polarizer, a photoelectric detector, and a phase meter; the light source emits a frequency-stable incident beam and generates a stable electric reference signal; under the actions of the polarizing beam splitting prism, quarter-wave plate and corner cube retroreflector, the incident beam travels twice through and then reflected twice by the wedge mirror assembly, and finally exits from the polarizing beam splitting prism. The polarizer mixes the orthogonal components of the output beam and the photoelectric detector generates an electric signal and then the phase meter compares the phase difference of said electric measurement signal with said electric reference signal, then the roll angle of travel can be measured. The advantage of present invention is: the system has simple structure but with high measurement precision, it can be applied to the precision geometrical measurement and the establishment of precision benchmark metrology in wide high-tech fields such as military industry, aerospace engineering and digital controlled machine tools.

The invention discloses a QKD system sending terminal based on a phase modulation light source, a receiving terminal, a QKD system and a method thereof. By using the QKD system based on the phase modulation light source, at the sending terminal, the phase modulation light source is adopted; and through X basis vector phase coding and Z basis vector time coding modes, a light pulse pair is coded and then the light pulse pair is sent to the receiving terminal. In the invention, the phase modulation light source is used and a low half-wave voltage is possessed so that energy is saved and a possible is provided for a high speed application of the system; and a bias point problem of an intensity modulator does not need to be considered.

A data multiplexing apparatus, method, and system, generates scheduled data for instructing the reading and multiplexing of clips, sequentially reads from a storage unit, transport stream packets based on clips corresponding to the scheduled data, and uses a multiplexer to time-divisionally multiplex the transport stream packets read from the storage unit, which correspond to a plurality of channels, without separating them into data for the respective channels. Accordingly, a load on a host PC is reduced, and a system structure can be simplified.

In a hybrid water heater, a heat pump unit and a combustion heating unit are combined for heating water to be stored in a hot water tank. The combustion heating unit includes a combustor for heating water in a chamber by combustion operation. The chamber of the combustion heating unit communicates with the hot water tank through a first water port provided at an upper side of the hot water tank and a second water port provided at a lower side of the hot water tank, so that hot water heated in the chamber flows into the upper side in the hot water tank through the first water port, by using natural convection. Further, water in the hot water tank at the lower side flows from the second water port into the chamber.