225results about How to "Low cost performance" patented technology

A method and an apparatus for realizing a multibeam smart antenna by directional antennas in a mobile communication system, are provided. The method comprises performing space division on a base station service region by N directional antennas independent with one another to divide the base station service region into N cells, each cell satisfying a perdetermined electromagnetic radialization request; composing a delamination multibeam array by the N directional antennas based on the region to be covered by the base station, the directional antenna adjusting direction of the beam in advance to realize space division multiple access, the antenna for performing transmission and receiving of signals are controlled by a main processor unit, auxiliary processors and an antenna selection unit to position and track a mobile user. The apparatus includes a delamination antenna array composed of N directional antennas independent with one another, the antenna selection unit, auxiliary processors, a main processor; wherein the N directional antennas are connected with input ends of the auxiliary processors respectively, the auxiliary processors are connected with the antenna selection unit and the main processor respectively, the main processor is connected with the antenna selection unit and the base station. The invention has a high communication capacity and immunity.

The invention discloses a basalt fiber reinforced wood-plastic composite material and a preparation method thereof, and relates to a wood-plastic composite material and the preparation method thereof. The problem of bad comprehensive mechanical property of the current wood-plastic composite material is solved. The material is prepared from thermoplastic plastic, a wood fiber material, modified basalt fibers, a bulking agent and a lubricant. The preparation method comprises the following steps: 1. pre-treating the wood fiber material; 2. sequentially putting the raw materials in a high-speed mixer to be stirred, discharging the materials into a low-speed cold mixer to be stirred, and cooling the materials to obtain premix; and 3. carrying out extrusion forming on the premix. Beside keeping the advantages of good weather fastness, thermal insulation, water resistance, corrosion resistance, and the like, the basalt fiber reinforced wood-plastic composite material provided by the invention has the advantages that the mechanical property is greatly improved compared with common wood-plastic composite materials, and the problems of low mechanical strength and large brittleness of traditional wood-plastic composite material products are well solved. Leftover materials generated in the production process of the basalt fiber reinforced wood-plastic composite material provided by the invention can be entirely recycled, few additives are added, and the basalt fiber reinforced wood-plastic composite material is environment-friendly, thereby being a typical environment-friendly material.

The invention discloses a wearable blind-guiding device based on wireless sensor network and vibration feedback, comprising a head detection device, a waist detection device and a leg detection device, wherein the detection devices conduct data communication by virtue of the wireless sensor network. By using the device, the technical defects and shortcomings of the prior art are overcome so as to provide the wearable blind-guiding device based on wireless sensor network and vibration feedback. The device can liberate hands of visual-impaired people during walking, realize omnibearing detection of obstacles around the visual-impaired people and correctly feed back the position and the height of the obstacles. Communication of various wearable devices is realized by the wireless sensor network, so that the problems of non-uniform feedback of the position of the obstacles by independent judgments and inconvenient wearing of bus control are solved to ensure walking safety of the blind.

To provide a power supply unit capable of realizing a multiphase power supply at low cost. For example, each of a plurality of semiconductor devices DEV[1]-DEV[n] comprises a trigger input terminal TRG_IN, a trigger output terminal TRG_OUT, and a timer circuit TM that delays a pulse signal input from TRG_IN and outputs it to TRG_OUT. DEV[1]-DEV[n] are mutually coupled in a ring shape by its own TRG_IN being coupled to TRG_OUT of one semiconductor device other than itself. Each of DEV[1]-DEV[n] performs switching operation by using the pulse signal from TRG_IN as a starting point, and feeds a current into an inductor L corresponding to itself. Moreover, DEV[1] generates the above-described pulse signal only once during startup by a start trigger terminal ST being set to a ground voltage GND, for example.

In steering apparatus and method for an automotive vehicle, a turning section that turns steered road wheels is provided, a clutch is installed in a predetermined position in a midway through a steering system from an operation input section to the steered road wheels to link between the operation input section and the steered road wheels, a steering angle of the operation portion is detected, a turning angle is detected, an elastically deformable member is interposed between the operation portion and the turning portion to transmit a steering torque inputted from the operation input section to the steered road wheels when the clutch causes the operation input portion and the steered road wheels to be connected; and an angular deviation between the steering angle detection value and the turning angle detection value developed due to a deformation of the member is calculated.

A plasma processing apparatus includes: a reaction chamber; two electrodes provided inside the reaction chamber for generating a plasma therebetween, wherein at least one of the electrodes has at least one gas inlet pore through which a gas is introduced into the reaction chamber; and a gas inlet pipe coupled to the gas inlet pore for introducing the gas into the reaction chamber. The gas inlet pipe is grounded and insulated from the gas inlet pore, wherein an insulation member is placed inside the gas inlet pipe and the gas inlet pore.

The invention discloses a preservative for grass carp fillets and a use method, belonging to the technical field of aquatic product freshness retaining and processing. The preservative is a mixed aqueous solution comprising the following components in concentration by mass-volume percent: 1.3-1.7 percent of chitosan, 0.9-1.1 percent of acetic acid and 0.4-0.6 percent of tea polyphenol. The use method of the preservative comprises the following steps of: soaking grass carp fillets in the preservative for 2-3min, taking out and trickling for 1min and then drying the grass carp fillets at 4 DEG C so as to form a thin freshness retaining film; then putting the grass carp fillets coated with the thin freshness retaining film into a freshness retaining bag and tying the opening of the bag; and storing the grass carp fillets in a refrigerator at 4 DEG C. Compared with an ordinary refrigeration method, the preservative can better keep the freshness, the water and the flavor of the grass carp fillets and prolong the shelf life of the grass carp fillets for 8-10 days; the operation process of coating the film is simple; and the preservative has high cost performance, wherein the cost of per ton of preservatives for the grass carp fillets is lower than 90 yuan.

The invention discloses a nano silver-polyvinylidene fluoride composite separation membrane and a preparation method thereof. The separation membrane is obtained by modifying a polyvinylidene fluoride membrane with nano silver. According to the invention, two dispersion methods namely a physical method and a chemical method are simultaneously adopted in the preparation process, so that nano particle reaches an ideal dispersion effect in the polyvinylidene fluoride separation membrane and a reliable guarantee is provided for the excellent property of the membrane. In the invention, a noble metal nano silver the price of which is relatively low is added, and the amount of nano silver is regulated, so that the mechanical property, antibiotic property and pollution resistance of the polyvinylidene fluoride separation membrane are greatly improved, the water flux and trapping rate of the polyvinylidene fluoride separation membrane are also improved, the service life of the membrane is prolonged, and the membrane has high performance-to-price ratio.

The invention discloses a vehicle double-layer high-temperature superconductor magnetic suspension system, which is characterized by comprising a track and a low-temperature container, wherein the track is made of permanent magnet, a magnetic flux gathering material and the like; the low-temperature container is fixedly arranged in a vehicle body frame; and a high-temperature superconductor layer is fixedly arranged in the low-temperature container and is designed into two layers which are formed by overlapping a lower layer block 103a and an upper layer block 103b. According to the vehicle double-layer high-temperature superconductor magnetic suspension system, by additionally arranging the upper superconductor layer, the aim of simultaneously increasing the suspension force and the guidance force performance of the original single-layer suspension layer can be fulfilled; and the vehicle double-layer high-temperature superconductor magnetic suspension system can be used for optimizing the conventional single-layer high-temperature superconductive magnetic suspension system and improving the load carrying capacity and the stability performance of a superconducting maglev train.

The invention discloses a super-mapping machine which comprises a remote sensing and telemetering system, a three-dimensional attitude system and a central control and positioning communication system, wherein the remote sensing and telemetering system comprises an infrared laser light source (2), a search imaging unit (3), an image processing unit (4), an astronomical telescope imaging unit (5) and a photoresistor (1); the three-dimensional attitude system comprises a pitching pose unit (6), a horizontal axis (9), a horizontal attitude unit (7), a heading attitude unit (8) and a vertical axis (10); the central control and positioning communication system comprises a central processing unit (11), a man-machine interaction unit (12), a storage unit (13), a global positioning unit (14), a communication unit (15), an image recognition unit (16) and a power supply unit (17). The invention provides a field portable machine system which can acquire high-precision three-dimensional images in a geodetic coordinate system under the range finder-free conditions.

One embodiment relates to an on-chip power amplifier (PA) test circuit. In one embodiment, a PA test circuit comprises a controllable oscillator (CO) configured to generate a radio frequency (RF) signal, a parallel resonant circuit tuned to the radio frequency, a pre-power amplifier (PPA) coupled to the CO and the parallel resonant circuit, the PPA configured to amplify and drive the RF signal from an output of the PPA into a load. The test circuit may further comprise a first transmission gate configured to couple the RF signal from the CO to an input of the PPA. One testing methodology for a PA test circuit comprises stressing the PPA with an RF signal, measuring a characteristic of the PPA, determining stress degradation from the characteristic measurements, and repeating the stressing and characteristic measurements until a maximum stress degradation is achieved or a maximum stress has been applied.

The invention discloses an efficient selectable pyrolysis system and a using method thereof, wherein the efficient selectable pyrolysis system comprises a furnace body, a dry distillation kettle, gas nozzles and a cooling device, wherein a furnace chamber in the furnace body is internally provided with the horizontally-arranged dry distillation kettle, wherein the dry distillation kettle comprises an upper side part, a lower side part, a kettle top and a kettle bottom; the part on the upper side part close to the kettle top is communicated with an exhaust pipe; the other end of the exhaust pipe is connected with a diffusion valve; the part on the furnace part close to the exhaust pipe is provided with a temperature meter communicated with the furnace chamber; the lower part of the lower side part is communicated with gas outlets of four staggered gas nozzles; the gas outlets of the gas nozzles are connected with a control valve; the cooling device comprises a nitrogen intake pipe and a nitrogen exhaust pipe, wherein the nitrogen intake pipe is communicated with the kettle top; the nitrogen exhaust pipe is communicated with the upper side part; and when the efficient selectable pyrolysis system is used, if carbon production is emphasized the heating is finished to pyrolysis carbonization stage, and if biomass gas production is emphasized, the heating is finished to the forging stage. The design not only has good adjustability, high cost performance and high heating efficiency, but also the finished product carbon has good quality and high production efficiency.

The invention discloses a digital intermediate frequency receiver. The digital intermediate frequency receiver comprises a multichannel analog to digital converter (ADC) module, a multichannel bridge connection module, a multichannel digital down-conversion application specific integrated circuit (ASIC) module, a multichannel field programmable gata array (FPGA) processing module, a multichannel digital signal processor (DSP) processing module, a multi-interface output module and a DSP general control module. A data output of the multichannel ADC module is connected with a data input of the multichannel bridge connection module, a data output of the multichannel bridge connection module is connected with a data input of the multichannel digital down-conversion ASIC module, and a data output of the multichannel digital down-conversion ASIC module is connected with a data input of the multichannel FPGA processing module. The multichannel FPGA processing module is connected with the multichannel DSP processing module by bothway multichannel data. The data output of the multichannel DSP processing module outputs the final result by the multi-interface output module. The universal type digital intermediate frequency receiver is good in generality, high in processing efficiency, low in cost, and beneficial to industrialization.

The invention discloses a rare gas determination system based on a quadrupole mass spectrometer. A laser sample room of the system is connected with a first port of a first four-way pipe through a valve B, a second port of the first four-way pipe is connected with a first impurity absorber through a valve D, a third port is connected with a first port of a first three-way pipe through a valve G, and a fourth port is connected with a molecular vacuum pump and a mechanical pump in sequence; a vacuum gage is installed between the molecular vacuum pump and the fourth port of the first four-way pipe, and a rare gas standard tank is connected between the valve G and the third port of the first four-way pipe; a second port of the first three-way pipe is connected with an ion pump through a valve J, and a third port is connected with a second impurity absorber and the quadrupole mass spectrometer in sequence. The components and the connecting pipes are connected by metal interfaces, and electric heater bands are installed on the outer surfaces of the connecting pipes of the components. The system can realize rare gas mass spectrometry under the premise of ensuring identical precision and accuracy, and has the advantages of low cost and high cost performance.

The invention relates to an auto-sealing assembly machine for button cell, which comprises: a frame groupware, a feeding mechanism, a sealing mechanism, an assembly mechanism, a drive gear, a pneumatic control system, and an electric control system. It uses mechanical-electrical integration design scheme, monitors moment and state by sensors, controls actuators with PLC technology, feeds material with belt, and realizes complete automation. Wherein, the OS uses contact screen as human-machine interface for convenient interactive operation.

The invention discloses an on-chip memory debugging method and a device based on memory built-in self-test. The method comprises the following steps: 1) inputting a debugging control instruction, and starting memory debugging; 2) decoding the debugging control instruction, and selecting a target on-chip memory according to a decoding signal; 3) accessing the selected target on-chip memory according to a to-be-debugged reading area of the debugging control instruction under the control of a memory built-in self-test controller; and 4) caching the reading data of the target on-chip memory to a debugging data register, and taking the data of the debugging data register as debugging result data output of the debugging control instruction. The device comprises a memory built-in self-test controller, a debugging control register, a decoder, an input selector, an output selector and a debugging data register. The memory debugging data can be accessed on the basis of the memory built-in self-test, and the on-chip memory debugging method has the advantages of low hardware overhead, low area overhead and high cost performance.

The invention provides a miniature piezoelectric impedance device for online health monitoring. A piezoelectric ceramic wafer sensor is stuck on a to-be-measured structure, an impedance converter generates an excitation signal, the excitation signal is applied to the to-be-measured structure through the piezoelectric ceramic wafer sensor, and a feedback signal is collected and sent to a system control module; when the defect of the to-be-measured structure drives the piezoelectric ceramic wafer sensor to deform, a sampling signal returned by the piezoelectric ceramic wafer sensor changes, andthe system control module judges the health status of the to-be-measured structure according to a set threshold value. The device and the method in the invention have the characteristics of simple structure, light weight, small volume, low price, no pollution, easy operation, good stability, strong environmental tolerance, wide use structure range and the like, and online and continuous monitoringcan be realized.

The invention relates to a fabric dirt pretreatment agent containing a steady biological enzyme complex and a low-activity substance and a preparation method thereof. A product of the invention takes fatty alcohol polyoxyethylene ether (7), fatty alcohol polyoxyethylene ether (9), sodium fatty alcohol-polyoxyethyleneether sulfate (70 percent), fatty alcohol polyoxyethylene ether (JFC), polyacrylate, sodium citrate, boric acid, propylene glycol, prolease, calcium chloride, isothiazolinone, essence, and deionized water as raw materials; and the method adopts a polymer to ensure that the prolease forms a polymer complex in a system by researching biological enzyme stabilization technology, which ensures the long-term effective activity of biological enzyme, ensures that the product can achieve stronger detergency when the content of an active substance is 10 percent or so and has steady quality during the storage, and achieves the aims of saving resources and protecting environment. The product is neutral, and has unique advantages in preventing fading, reducing the damage of clothes, protecting skin, and reducing pollution.

With reference to Figure, the present invention provides a fuel injection system for an internal combustion engine which delivers fuel to be mixed with charge air for subsequent combustion in a combustion chamber of the internal combustion engine. The fuel injection system comprises a fuel injector which functions as a positive displacement pump and dispenses in each operation thereof a set quantity of fuel;a mixing chamber into which the fuel injector dispenses fuel; and a gas supply passage for supplying gas to the mixing chamber to entrain the fuel dispensed into the mixing chamber in a flow of gas which passes through the mixing chamber into the combustion chamber. The mixing chamber is connected to the combustion chamber to deliver fuel and gas into the combustion chamber separately from the charge air and a depression in the combustion chamber is used to draw gas through the gas supply passage into the combustion chamber. An inlet valve controls flow of charge air into the combustion chamber and the inlet valve is kept closed for an initial part of an intake stroke of the engine so that the depression is created in the combustion chamber.

The invention discloses an overhead cast-in-place box beam pressure-bearing strut and relates to overhead concrete box beam hole-by-hole casting construction work. The overhead cast-in-place box beam pressure-bearing strut comprises a support body (1), a reinforced support (2) and a crossed support (10). The support body (1) is composed of a plurality of scaffolds (3). A supporting base (5) and a bracket (6) are arranged at the top end and the bottom end of a vertical supporting rod (1.1) respectively. The bracket (6) is provided with distribution beams (7) in an overlapped mode, and the distribution beams (7) comprise a first distribution beam (7.1) placed in the middle and second distribution beams (7.2) placed on two sides. The second distribution beams (7.2) are provided with wing plate supports (8) in an overlapped mode, and the first distribution beam (7.1) and the wing plate supports (8) are provided with formworks (9) in an overlapped mode. The overhead cast-in-place box beam pressure-bearing strut is convenient to assemble and disassemble, high in mechanical degree, quick in transferring, and capable of improving construction efficiency of cast-in-place box beams. According to the overhead cast-in-place box beam pressure-bearing strut, overlapping accuracy of the support body can be controlled easily, cost performance is high, construction time is short, and modern construction demands can be met. The invention further discloses a construction technology of the overhead cast-in-place box beam pressure-bearing strut.

The invention discloses an environment-friendly waste road asphalt regenerating agent. The environment-friendly waste road asphalt regenerating agent comprises the following components in part by weight: 45-75 parts of regenerating component, 1-5 parts of plasticizer, 25-55 parts of waste styrene butadiene rubber powder and 0.5-3 parts of anti-waste agent. The invention further discloses a preparation method of the environment-friendly waste road asphalt regenerating agent. The regenerating agent provided by the invention is an asphalt regenerating agent of which asphalt light component and asphaltene supplement are synthesized from waste resources, so that the environment-friendly waste road asphalt regenerating agent is good in regenerating performance, economical and environment-friendly, does not use existing resources or resources to be developed, and can recycle the waste resources to the maximum extent.

A system and method for low-cost performance and compliance testing of local oscillators and transmitters for wireless RF applications. A preferred embodiment comprises observing a digital signal from within an RF circuit, manipulating the signal with digital signal processing techniques, and determining if the RF circuit passes a test based upon results from the manipulating. Since the signal is clocked at a much lower frequency than an RF output of the RF circuit and the manipulation is performed digitally, testing can be performed at different stages of the production cycle and expensive test equipment can be eliminated.

A semiconductor device including a contact plug connected to a diffusion layer of a cell transistor, a heater electrode connected to a phase-change film, and a buffer plug connecting between the contact plug and the heater electrode.

A network relaying apparatus and method for routing and transferring packets at high speed. A transfer engine stores the packets received through a network interface in a packet buffer, and stores the header information in a header RAM. A search engine searches the transfer control information including the transfer destination information and the action information in accordance with the header information, and writes it in the header RAM. The transfer engine produces an output packet based on the information stored in the packet buffer and the header RAM and outputs it to the transfer destination. A switch switches the output packet to the routing process of the destination. The transfer engine executes the receiving process and the transmission process, and the search engine executes the input search process and the output search process. Each of these processes is executed by pipelining control using a required table independently.

The invention provides a variable air inlet grille of an automobile radiator, and belongs to the technical field of automobiles. The variable air inlet grille of the automobile radiator solves the technical problem that an existing automobile air inlet grille cannot be adjusted between the fully-opened state and the fully-closed state. The variable air inlet grille of the automobile radiator comprises a grille frame fixedly arranged at the front end of an automobile. A support is fixedly arranged in the grille frame, a plurality of grille pieces are evenly arranged on the support, and the middle of each grille piece is connected to the support in a rotary mode. The variable air inlet grille further comprises a plurality of connecting rods, each grille piece is hinged to the corresponding connecting rod, the grille pieces are parallel to one another, and when all the grille pieces are rotated onto the same plane, a frame opening of the grille frame can be covered. An adjusting structure which can be used for adjusting the angles between the grille pieces and the connecting rods is arranged on the support. The variable air inlet grille of the automobile radiator has the advantages of being simple in structure, capable of being adjusted between the fully-opened state and the fully-closed state and the like.

The invention discloses an epoxy resin and functional graphene integrated filtering IC. The epoxy resin and functional graphene integrated filtering IC comprises a filtering coil and a filtering medium, and the filtering medium comprises, by weight, 5-20% of a functional graphene material, 1-5% of an amine curing agent, and the balance of epoxy resin. The epoxy resin and functional graphene integrated filtering IC is obtained through mixing a main raw material epoxy resin with the functional graphene material, adding the curing agent and carrying out curing molding. The epoxy resin and functional graphene integrated filtering IC has excellent functions, reaches a surprising range of -6-60 db, and is suitable for being applied to filtering of most harmonic waves. The making method has the advantages of simplicity and low making cost; and the epoxy resin and functional graphene integrated filtering IC has the advantages of high economic values, high cost performance, and making up for the deficiency in mid-low end filtering products.

The invention provides a low-gloss heat-proof ABS (Acrylonitrile Butadiene Styrene) resin and a preparation method thereof. The ABS resin is prepared from the following components in parts by weight: 65-94 parts of acrylonitrile-butadiene-styrene resin, 5-25 parts of heat-proof agent, 1-10 parts of matte masterbatch and 0.1-1 part of accessory ingredient. Compared with the prior art, the low-gloss heat-proof ABS resin is characterized in that the matte masterbatch which takes large particle size HIPS (High Impact Polystyrene) as a main body is added into the heat-proof ABS resin, the compatibility of the HIPS and the ABS is improved through SBS (Styrene-Butadiene-Styrene) flexibilizer and the compatilizer of a core-shell structure, surface gloss is obviously lowered on a premise that the toughness is not affected, cost is relatively low, and the low-gloss heat-proof ABS resin can be applied to automobile interior trim parts which have a matte requirement.

The invention discloses a reforming hydrogen production catalyst with a waste vanadium-titanium denitration catalyst as a raw material and a preparation method of the reforming hydrogen production catalyst. The catalyst is a porous ceramic membrane as a carrier prepared from a waste vanadium-titanium denitration catalyst, a silicon source powder material, an aluminum source powder material and a molding agent solution, and nickel oxide is adopted as a catalysis active component. A porous ceramic membrane carrier is prepared from the waste vanadium-titanium denitration catalyst, the silicon source powder material, the aluminum source powder material and the molding agent solution through processes such as crushing, blending, pelletizing, molding and calcining, the porous ceramic membrane carrier is soaked into an active component precursor solution, and the reforming hydrogen production catalyst is prepared through drying and roasting. By adopting the reforming hydrogen production catalyst, not only is harmless treatment on the waste vanadium-titanium denitration catalyst achieved, but also recycling hydrogen production with high additional values can be achieved, in addition, the reforming formaldehyde hydrogen product H2 selectivity is high, a small amount of active components are carried, the cost is low, and wide market application prospects can be achieved.