72results about How to "Low cost design" patented technology

The invention provides a Ka-band tilt-structure active phased array antenna, so as to provide an active phased array antenna which is high in integration density and can improve maintainability and interchangeability. According to the technical scheme, one path of RF signals transmitted by a transmitting signal processing terminal are transmitted to a power distribution/synthesis network (5) via a signal interface and a radio frequency interface to be divided into M paths of signals; according to information of an azimuth angle and a pitch angle of the phased array antenna provided by the transmitting signal processing terminal in real time, a beam controller (4) calculates and obtains beam pointing of the phased array antenna in real time through an FPGA; the beam pointing of the phased array antenna is converted into phase data needed by each array element under control of the beam controller (4); the data are transmitted to tilt-type TR assembly sub array modules in N channels respectively via a high and low-frequency interconnected multi-core high and low-frequency socket, and under control of the beam controller, M*N paths of signals are transmitted to an antenna array, and thus signal transmission is completed, and synchronous electric control scanning of beams transmitted by the phased array antenna is realized.

A miniature wireless apparatus for recording and remote monitoring physiological signals and use thereof are described. The miniature wireless apparatus comprises a signal collecting module, a signal processing module, a wireless module, and a recording device. The methods for recording and remote monitoring physiological signals comprising collecting physiological signals by a signal collecting module, processing the said physiological signals by a signal processing module and recording the processed signals by a recording device, modulating the said processed signals and synchronously transmitting and receiving the modulated signals by a wireless module to integrate the physiological signals, receiving the signals by a remote receiver, and recording, monitoring, and analyzing the physiological signals by the remote receiver and further transmitting the physiological signals to the remote monitoring station through a network. Methods for sleep monitoring and evaluating and for monitoring and evaluating of autonomic nerve function using the miniature wireless apparatus are further described.

The present invention provides an improved design for turbomachinery, such as blowers and compressors, for providing pressurized process gas. The improved design comprises two housing portions that fit together to form an interior cavity in which a preassembled rotating assembly may be installed and balanced. Each housing portion includes an interior compartment designed and shaped to correspond to desired positions of components of the rotating assembly. After the preassembled rotating assembly is seated within the interior compartment of the lower housing portion and balanced, the upper housing portion can be fitted to the lower housing portion to complete the machine housing and encompass and hold the rotating assembly in place without the need to remove or disassemble the rotating assembly. A collector cover can thereafter be attached to the assembled machine housing to enclose an impeller operatively mounted on a rotating shaft of the rotating assembly.

A filter assembly includes a housing with a central standpipe, and cover for enclosing a filter element. The filter element includes a ring of filtration media and first and second end caps. A vent orifice is formed in the first end cap into the central cavity of the media ring. A support core is disposed centrally in the media ring and extends between the first and second end caps. The core includes a separate and independent fluid channel extending from the first end cap that is fluidly connected with the vent orifice, to the second end cap. The second end cap has a central opening, and an annular sealing device bounding the opening which receives and seals to the standpipe and includes through-passages fluidly interconnecting the fluid channel in the core with flow opening(s) along the standpipe or in the lower end of the housing to a drain port.

A device, system and method is provided for dispersing an aerosol formulation comprising a medicament. The device may be useful in administering inhaleable vaccines and the like. The device designed for low cost and applicability to a multitude of patient populations. The device has a spacer (10) is suitable for use with a wide range of aerosolized formulations, particularly powders. The spacer (10) may be an expandable volume spacer (10). The spacer (10) may also be used with other inhalation aids (80). The spacer (10) may include a multi-purpose outlet (40) for use with different groups within the target patient population.

This invention relates to an automatic drive circuit for power switch, whose changer circuit comprises main horsepower MOSFET, synchronous rectifying tube, and the said automatic drive circuit comprises a time-delay drive circuit with its two ends separately attached to PWM signal and main power tube, a cut-out circuit including a PNP transistor, a NPN transistor and two electric resistance, a drive sustaining circuit including two diodes, three electric resistances, two capacitors and a PNP transistor. The invention makes the high power density and low cost design easier in the case of low power application.

The invention discloses an LED illumination control circuit for a silicon controlled light modulator to achieve light and color synchronous adjustment and a method thereof. The control circuit comprises a bypass amplifying circuit, a bypass switching circuit, a self-adaptive detection circuit, LED modules, a color temperature adjusting depth control point circuit and a color temperature adjusting start point control circuit. The bypass amplifying circuit, the bypass switching circuit, the self-adaptive detection circuit, the color temperature adjusting depth control point circuit and the color temperature adjusting start point control circuit are connected in sequence. The LED modules are respectively connected with the bypass amplifying circuit, the bypass switching circuit, the self-adaptive detection circuit and the color temperature adjusting depth control point circuit. According to the method, the different current magnitudes of the first LED module and the second LED module are synchronously controlled, color mixture happens to the LED modules with different color temperatures, and the luminance rate is changed. Light and color modulation detection and control circuits are additionally arranged at the two ends of an LED load, the color temperature can be changed synchronously while light modulation is conducted on the silicon controlled light modulator, and therefore the synchronous light and color adjusting function can be achieved.

An apparatus is provided for injection of a fluid for an exhaust gases treatment device of an internal combustion engine arrangement. The apparatus includes a fluid injector fed from a source of fluid under pressure through a fluid conduit, a feed valve in the fluid conduit between the source of fluid the said injector, a purge system including a gas conduit connecting a source of pressurized gas to the fluid conduit, a pressure limiter within the gas conduit, and a check valve downstream of the pressure limiter. The pressure limited by the pressure limiter is lower than the pressure of fluid delivered by the source of fluid.

The present invention provides a canard configuration missile general structure with a roll and despun stabilizing function, comprising a front section (1) and a rear section (2); and the front section (1) and the rear section (2) are connected by a roll and despun stabilizing device. The canard configuration missile general structure divides a missile into the front section and the rear section,a canard system is mounted at the front section, the rear section rotates around the longitudinal axis by an inclined tail under the aerodynamic action, and the front section realizes the roll stabilizing by the roll and despun stabilizing control, which solves the roll channel control problem caused by the canard wash of the canard configuration missile. At that same time, for the canard system,only pitch motion control and yaw motion control are needed and can be realized only by two sets of motor servo systems, so that the design of the canard system is greatly simplified, and the requirement for the structure space and the development cost are reduced. A guidance assembly is installed in the front section of the despun stabilized missile body, so that the disadvantageous influence oflarge roll angular velocity on the system stable imaging is avoided.

A controllable heating pad, having a heating conductor embedded in the heating pad, a sensing conductor embedded in the heating pad, a resistive material providing a distributed electrical path between the heating conductor and the sensing conductor, a first current sensor to sense a current in the heating conductor and a second current sensor to sense a current in the sensing conductor. A method of controlling a temperature of a heating pad, including the steps of: warming the heating pad to at least a first predetermined temperature by use of an adjustable on/off signal to the controllable switch, measuring currents through an NTC material or a combination of a PTC material and an NTC material; and maintaining a temperature of the heating pad to within a predetermined temperature range by use of the adjustable on/off signal to the controllable switch.

The cab is supported at the front by elastic bearings mounted on bearing axles in alignment with each other and supported by at least two brackets attached to the vehicle frame. The elastic bearings are mounted in bearing shells attached to the floor of the cab. Each elastic bearing includes a rubber bearing with a plain bearing coaxial to it. An arresting device between the plain bearing and the elastic bearing presents relative rotation until a threshold torsional load is exceeded.

The invention relates to the field of copper-nickel (CuNi) alloy corrosion resistance improvement using rare-earth modification and grain boundary engineering, in particular to a preparation method ofyttrium-based heavy-rare-earth copper-nickel alloy. The yttrium-based heavy-rare-earth copper-nickel alloy comprises, by mass percentage, 9-12% of Ni, 1.0-2.0% of Fe, 0.5-1.5% of Mn, less than 0.01%of S, less than 0.01% of P, less than 0.01% of C, 50-300ppm of Y, less than 0.1% of other impurities and the balance copper. The alloy is prepared by smelting the raw materials into casting blanks under vacuum gas protection and subjecting the casting blanks to forging, hot rolling, primary cold rolling, intermediate annealing, secondary cold rolling and finished-product annealing. The high-corrosion-resistant CuNi alloy structurally comprises an alpha-Cu matrix and yttrium-based rare-earth compound inclusion, the grain size (not considering twin crystals) of the matrix is 40-60 micrometers, the low-energy coincidence site lattice grain boundary proportion of the matrix is larger than 75%, and the ratio of maximum free grain boundary length to free grain boundary total length is smaller than 0.3. The CuNi alloy is low in preparation cost, applicable to board and band products, excellent in corrosion resistance and especially applicable to service environments high in seawater corrosionresistance requirements, and the preparation method of the CuNi alloy is simple in process and easy to operate.

The invention relates to the technical field of automobile air conditioners, in particular to an automobile double-air-conditioner control system and method. The automobile double-air-conditioner control system comprises a compressor, a front air conditioner host assembly, a rear air conditioner top evaporator assembly, a front condenser, a receiver-drier, a front expansion valve and a rear expansion valve. A refrigerating agent is discharged into the front condenser from the compressor, is condensed through the front condenser, then flows to the receiver-drier, is filtered and dried through the receiver-drier and then branches into a first refrigerating agent entering the front expansion valve and a second refrigerating agent entering the rear expansion valve. The first refrigerating agent is throttled and depressurized through the front expansion valve, then enters the front air conditioner host assembly and finally returns back to the compressor. The second refrigerating agent is throttled and depressurized through the rear expansion valve, then enters the rear air conditioner top evaporator assembly and finally returns back to the compressor. By the adoption of the system and method, low-cost design of an air conditioner system is achieved.