93results about How to "Many channels" patented technology

A mobile terminal (6) communicates via a satellite (8), which projects a number of overlapping spot beams (10), with a fixed earth station (2). To determine which spot beam (10) is to be used for communication, the mobile terminal signals in a common signalling channel which is simultaneously received by all, or a subgroup of, the spot beams (10). The satellite (8) retransmits to the fixed earth station (2) in separate channels the signal as received by each of the spot beams (10) which are able to receive the common signalling channel. The relative strengths of the signal as received in the different spot beams (10) are compared at the fixed earth station and a communications channel is assigned to the mobile terminal in one of the spot beams (10), selected according to the comparison of signal strengths.

The invention relates to a high-yield corn planting method which is simple, easy to popularize and capable of increasing yield and income. According to the high-yield corn planting method, corn is sown in 2-3 ridges, wherein one ridge is spared; one row of the corn is sown in each ridge, wherein the row spacing ranges from 13 centimeters to 15 centimeters. According to the high-yield corn planting method, the corn yield per unit area is increased through a technological innovation to exceed the yield per unit area of ridge culture corn in the world by 20-30%; since super-density-tolerance corn hybrid seeds are used, the plant type is compact, leaves charge upward, stems are tough, and roots are flourishing; corn plants are about 230-250cm high and are planted densely and reasonably; the two ridges are used for sowing, one of the ridges is spared of sowing, and the spared ridge enhances ventilation, photopermeability and photosynthesis; the marginal advantages are given full play to; colony heterosis is given play to, so that the corn yield is increased.

The invention relates to a remote matrix switch control module having an RS422 interface. The module comprises two hardware submodules, which are an RS422 submodule and a matrix switch control submodule. Cores of the invention are as follows: a remote control based on an RS422 bus and flexible switching of large-scale matrix switches. The RS422 submodule comprises an RS422 isolation communication unit, an FPGA protocol coding unit and a buffer driving unit. And the matrix switch control submodule is composed of a CPLD protocol decoding unit, a column signal driving unit, a row signal driving unit and a relay array unit. According to the module provided in the invention, performances are stable; reliability is high; besides, the module has an RS422 bus interface and a communication rate can reach 2MB/s; therefore, the module is suitable for general signal switch and route selection and external device control and the like. Moreover, a switching demand on a switching value by traditional testing equipment can be met; meanwhile, the module can be widely applied to remote testing platforms including a temperature cabinet, a vibration table, and a rotary table and the like; and thus, deficiency based on PCI, CPCI and PXI bus interface equipment can be made up.

The invention discloses a method and system for safety management of cloud computing. The method comprises the steps as follows: dividing security domains for a cloud computing service system, namely, areas with the same security threat characteristic are classified in a same security domain, and establishing corresponding security function models in the divided security domains; and performing safety protection to the cloud computing service by utilizing the corresponding security function models according to security demands of a service in the divided security domains. By adopting the invention, fine-grained and personalized security solutions can be provided for different services and different users, so that the purpose of supplying security capability as required can be achieved.

The invention discloses a multichannel array signal generating method and a device. The device comprises a signal parameter setting module, a shift register, a phase inverter network module, a switch matrix, a low pass filter and a level switch circuit, wherein the signal parameter setting module is used for realizing the selection of signal frequency/ pulse width/ array element position/ wave beam forming direction; the shift register and the phase inverter network module are used for generating multiple paths of delayed/ initial phase equidifferent square signals of which the frequency is f=fclk/2N, wherein fclk is clock signal frequency, and N is the number of the shift register; the switch matrix is used for selecting the square signal with corresponding delay/ initial phase from a square signal assembly according to the needed signal parameter; the low pass filter is used for shaping multiple paths of square signals to obtain multiple paths of sine wave signals; and the level switch circuit is used for carrying out level switch on multiple paths of sine wave signals. The invention is suitable for simulating the formation of a transmitting/ receiving signal by a single-frequency pulse signal wave beam, has artful design and has the advantages of convenient realization, small volume, low cost, low energy consumption and multiple paths.

The invention discloses an integrated multifunctional controller for low-power direct-current servomotors, which comprises an A/D (analog-to-digital) conversion circuit, a power circuit and a direct-current servomotor drive circuit; the output end of the A/D conversion circuit is connected with an ATmega16 singlechip; the ATmega16 singlechip is connected with the direct-current servomotor drive circuit; and the ATmega16 singlechip is also connected with a RS-232 serial communication interface circuit, a parallel communication interface circuit and a direct-current servomotor strop control switching signal detection circuit. The integrated multifunctional controller has a lot of and a large variety of input signal channels and a lot of output control functions, the structure is simple and reliable, the cost is low, and the integrated multifunctional controller is added with a communication function , and can realize computer control; because the integrated multifunctional controller is added with a direct-current servomotor protection function, the direct-current servomotor can be protected; since the integrated multifunctional controller is added with the stop control switching position signal detection function, the linear displacement control of an object driven by the direct-current servomotor is realized; and because the integrated multifunctional controller is added with a display function, a variety of signals can be displaced.

A monolithic optical transmitter photonic integrated circuit (TXPIC) comprises a plurality of integrated modulated sources which, when all operated at constant current, display a power output that varies as a function of array position similar to a quadratic-shaped curve and, further, forming an array of signal channels each having a different wavelength output. An optical combiner/decombiner is integrated in the circuit and has at least one free space region with a plurality of ordered bands along its edge where the zero order band is substantially at a longitudinal centerline of the free space region and where, on either side of this band, is a first order band followed by additional higher order bands. The ends of the output waveguides from the modulated sources are coupled approximate to the free space region edge along a region of the zero order band between one of the adjacent first order bands and a longitudinal centerline of the zero order band so that the inputs of the signal channels to the combiner of are titled or offset with respect to the longitudinal centerline of the combiner free space region so the combined outputs from the optical combiner will be aligned along the slope of the quadric-shaped curve of the combiner output passband envelope. The tilted combiner/decombiner may also be deployed in a receiver photonic integrated circuit (RxPIC) or other circuit employing such a device.

The invention discloses a device for measuring an albedo of a multi-channel narrow-waveband wave spectrum. The device comprises a shell, and an upward observation sensor and a downward observation sensor which are arranged on the top and at the bottom of the shell, respectively, wherein each of the upward observation sensor and the downward observation sensor comprises a cosine corrector, a filter and a detector; in the upward observation sensor, the cosine corrector, the filter and the detector are sequentially arranged from top to bottom; in the downward observation sensor, the cosine corrector, the filter and the detector are sequentially arranged from bottom to top. The device can precisely measure the albedo of the narrow-waveband wave spectrum which has the same response as that of a satellite sensor wave spectrum and supply direct checking equipment and data to inspection of a satellite product; the cosine correctors adopted by the invention can effectively reduce the cosine errors of the sensors. The device comprises the upper sensor and the lower sensor which are integrated; the equipment can be simplified; waterproofing and mounting are facilitated.

The invention discloses a flexible ZnO nanocrystal composite carbon fiber and graphene oxide glucose detector and a preparation method thereof. The sensor has carbon fiber, graphene oxide and ZnO nanocrystal layers sequentially from bottom to top. The preparation method is as follows: first prepare carbon fiber composite graphene oxide as a substrate, and then grow ZnO nanocrystals on it at a certain temperature to self-assemble into flexible ZnO nanocrystal composite carbon fibers and graphene oxide glucose detectors. Compared with traditional glucose detectors, this method has high response sensitivity, fast response time, flexibility, simple structure and low preparation cost, and has important application value in biology, medical treatment and some special fields.

A method for creating a branch fracture with temporary plugging and pressure buildup using super absorbent resin, comprising: setting a fracturing packer to fracture a target layer by pad fluid to form a main fracture; injecting into the main fracture pad fluid mixed with salt-intolerant super absorbent resin and performing replacement till depth of the main fracture, and then injecting pad fluid mixed with strong salt-tolerant super absorbent resin; after the strong salt-tolerant super absorbent resin absorbs water and expands to form a temporary plugging layer, re-injecting the pad fluid to create a branch fracture with pressure buildup; and lifting injection pressure to break up the temporary plugging layer formed by the strong salt-tolerant super absorbent resin to form residue, transporting the residue to the depth of the main fracture to bridge the temporary plugging layer formed, and re-building up pressure to create a branch fracture.

The invention belongs to the technical field of membranes, and particularly relates to a mesoporous silica/anodic aluminum oxide heterojunction membrane as well as a super-assembly preparation methodand application thereof. The hydrogen bonding force between silica and surface of anodic aluminum oxide is used, the anodic aluminum oxide is used as a substrate, by means of a spin-coating method, alayer of ultrathin, regular, ordered and thickness-controllable mesoporous silica film on the anodic aluminum oxide substrate through an interface super-assembly and evaporation-induced self-assemblyconstruction strategy, and therefore the mesoporous silica/anodic aluminum oxide heterojunction membrane is obtained. The heterojunction membrane comprises a negatively charged mesoporous channel withsmall mesoporous silica and a positively charged nano channel with the anodic aluminum oxide, so that abundant transmission channels are provided for ions; and the bipolar membrane structure with different charges can provide abundant channels for ion transmission, so that the internal resistance of ion transmission is greatly reduced, and the application in the aspect of energy capture is facilitated. Meanwhile, the invention provides a method for constructing a nano-fluidic device with ion selectivity and salinity difference energy capture, and a new idea is provided for constructing a solid-state nano-channel membrane.

The invention relates to a data acquisition system, in particular, a distributed miniature data acquisition system. The distributed miniature data acquisition system comprises an upper computer, a distributed acquisition array management module and a plurality of data acquisition stacks; a plurality of acquisition links are connected with the distributed acquisition array management module through link interfaces arranged on the distributed acquisition array management module; a plurality of data acquisition stacks are connected with one another through an cascading bus so as to form each acquisition link; the cascading mode of the data acquisition stacks in the acquisition link is configured to a daisy chain connection mode; and each data acquisition stack includes a control module and a plurality of sensor acquisition modules which are connected with one another sequentially in a stack manner and then are connected with the control module, wherein the control module is connected with an upper-level data acquisition stack and a lower-level data acquisition stack or the distributed acquisition array management module through cascading ports and is used for realizing control instruction transmitting, acquisition data receiving and data storage for the data acquisition channels of the sensor acquisition modules and supplying power for the sensor acquisition modules. The distributed miniature data acquisition system of the invention has the advantages of high expansibility and large number of channels, and can be widely used.

The invention relates to an MEMS optical switch module with N*N channels. Two identical MEMS chips and two identical N core collimators are installed at the same height on the same substrate. The lens planes of the two N core collimators are perpendicular to the substrate and parallel to each other. The lens installation planes of the two MEMS chips are perpendicular to the substrate, form an angle of 90 degrees, and face the lens matrix planes of the two N core collimators respectively at a 45-degree angle. Input light imported by an optical fiber of the first N core collimator is reflected when arriving at the lens of the first MEMS chip facing the first N core collimator, is reflected again when arriving at a lens of the second MEMS chip, enters a lens of the second N core collimator, and is output by an output optical fiber. By controlling the lenses of the two MEMS chips, the direction of light can be changed, and all-optical-path switching can be realized. The input and output optical fibers are arranged on the same side of the MEMS chips, and are easy to use. Optical path switching can be carried out at the same time in the multiple channels. Moreover, the MEMS optical switch module has the advantages of fast response, low insertion loss, good stability, compact structure, small size, and low weight.

In a multi-channel three-dimensional optical switch using a 2-axis movable mirror, the arrangement density of the mirrors is increased to realize a three-dimensional optical switch with more channels. Adjacent to the beam exit surface of the fiber collimator array, a first reflector array with a plurality of first reflectors with one rotation axis and a plurality of first windows is arranged, and a first reflector array with the first reflector is arranged. A second mirror array comprising a plurality of second mirrors and a plurality of second windows for one rotation axis perpendicular to the rotation axis. It constitutes a multi-channel optical switch that forms an optical path in which the light beam emitted from the fiber collimator passes through the first window, is reflected in the order of the fixed mirror and the movable mirror, and passes through the second window to exit to the outside.

The invention relates to a method for directly preparing high-purity white carbon black from fluorine-containing silicon slag. The method comprises the following steps: homogenizing, pulping and dispersing fluorine-containing silicon slag to disperse aluminum hydroxide powder wrapped by solid white carbon black particles so that the dispersed aluminum hydroxide powder reacts with fluosilicic acidadsorbed by the solid white carbon black to produce a water-soluble aluminum fluoride solution and a solid silicon dioxide material, removing an acid liquor containing aluminum fluoride, and carryingout homogenizing pulping, dispersing and ultrasonic fine washing on the obtained solid silicon dioxide material at least one time until washing water is neutral, and dehydrating and drying the neutralsilicon dioxide material to obtain the high-quality white carbon black. The method is simple, practical and capable of achieving industrial production, the SiO2 content (by dry basis) of the preparedwhite carbon black is greater than or equal to 92%, NSA is greater than or equal to 200 g/m<2>, the particle size is smaller than or equal to 0.044 micrometers, and the total iron content is smallerthan or equal to 0.01%, and other technical indexes all meet or exceed the national industrial standard HG/T3061-2009 requirements of precipitated white carbon black.

The invention provides a digital signal coding-based method and system for 5th generation (5G) broadband wireless communication, which relates to the field of the broadband wireless communication. In the digital signal coding-based method and system for the 5G broadband wireless communication, coding is performed on a high-speed baseband digital signal to form a transmission code, and then, the transmission code is directly sent, transmitted and received, whereas the radio-frequency carrier or the radio-frequency pulse of a traditional wireless communication system, or frequency conversion or modulation/demodulation processing on the signal is not needed. The extension and waveform conversion coding is performed on the high-speed baseband digital signal by the transmitting end of the system disclosed by the invention to form the transmission code, and the transmission code is transmitted through an antenna after being amplified; and at the receiving end of the system, the signal received by the broadband antenna is input to a high-speed sampler or an analog-to-digital converter after being amplified by a low noise amplifier, and then, is input to a baseband for signal processing. The digital signal coding-based system for the 5G broadband wireless communication provided by the invention has the characteristics of simple structure, high transmission rate and low cost, and can be applied to 5G all-digital broadband wireless communication.

The invention discloses an air-tight fiber wall-penetrating socket. The air-tight fiber wall-penetrating socket is characterized by comprising: a housing having a separation wall provided with multiple pin limit holes; press plates with pin stepped holes, positioning holes and screw counterbores; and pin assemblies provided with front sleeve pipes, rear sleeve pipes, ceramic pins and tight coated fibers. The pin assemblies are disposed in the pin limit holes of the housing. The two press plates are disposed on the two sides of the separation wall of the housing respectively. The pin assemblies are inserted in the pin stepped holes. The positioning holes of the press plates fit positioning bosses of the housing. The screw counterbores are connected to threaded blind holes by means of screws. Through adoption of the housing, the press plates and the pin assemblies and also through the assembly process using an epoxy sealant and silica gel, a present situation that long and thin pins are difficult to process is avoided. The advantages are that the air-tight fiber wall-penetrating socket has many channels, exhibits good air-tightness, and is convenient to process and assemble.

The invention discloses a television distant field voice recognition system and a method thereof based on a 5.8GHz wireless transmission. The microphone array module is used for collecting mixed fieldvoice data; the DSP processing module filters out sound data sent by the television end to receive voice commands through a preset algorithm; the 5.8 GHz radio frequency module is configured to perform modulation and demodulation on the voice command, and the demodulated voice command is output to the television SOC system; the television SOC system is used for comparing the voice command with the background voice database to generate an operation instruction, thereby controlling the television APP to complete the corresponding voice operation. Compared with the wireless technology of the 2.4GHz frequency band carrier, the system has wider transmission bandwidth by adopting the 5.8 GHz band carrier to transmit voice data. The system has the advantages of stronger anti-interference capacity, no extra transmission delay and better human-computer interaction. The system can better meet the needs of distant field voice recognition and data transmission of television.

The invention discloses a satellite-borne dual-band four-channel rotary joint which comprises a first single-waveguide rotor, a first dual-waveguide stator, a dual-waveguide rotor, a second dual-waveguide stator and a second single-waveguide rotor. The first single-waveguide rotor, the double-waveguide rotor and the second single-waveguide rotor are rotors, and the first double-waveguide stator and the second double-waveguide stator are stators; the first double-waveguide stator is arranged between the first single-waveguide rotor and the double-waveguide rotor and is supported and connected through a bearing, the second double-waveguide stator is arranged between the second single-waveguide rotor and the double-waveguide rotor and is supported and connected through a bearing, and the rotors and the stators can rotate relatively. The dual-band four-channel rotary joint is a Ka-high-band four-channel rotary joint and a K-high-band four-channel rotary joint and has the advantages of being high in working frequency and large in number of channels, the channels are independent of one another due to the concentric stacking structure, and the requirement for high isolation between the channels is met.

The invention provides an all polarization-maintaining multi-channel coherent anti-Stokes raman scattering fiber light source. The all polarization-maintaining multi-channel coherent anti-Stokes ramanscattering fiber light source comprises an all polarization-maintaining main laser, a light amplifier, a beam splitter and a plurality of slave lasers, wherein a gain fiber is arranged in the laser,the light amplifier is used for amplifying pulse laser output from the main laser and then outputting the pulse laser to the beam splitter, the beam splitter is used for dividing the amplified pulse laser into multiple beams, one beam of pulse laser is directly output, the other remaining pulse laser is input to each slave laser, the gain fiber in the laser is used for generating a non-linear effect, the pulse laser output from each slave laser is delayed after the non-linear effect is generated and then is sequentially combined to obtain beam combination light, the beam combination light is combined with the beam of pulse laser directly output and then is output, the main laser, the light amplifier, the beam splitter and the plurality of slave lasers are connected by an all polarization-maintaining fiber light path, so that high-accuracy and high-stable synchronous multi-channel ultrashort pulse is obtained.

The invention discloses a satellite-borne equipment service-life experimental data processing system, comprising a sensor group and a conditioning circuit which are used for measuring the service life test states, a digital multimeter used for data collecting, computer data processing software and remote wireless data transmission equipment. The sensor group and the conditioning circuit convert the measurement of experiment parameters into the measurement of electric signals; the digital multimeter carries out high-precision measurement of the electrical parameters output by a power supply and a sensor conditioning circuit for service life tests and transmits the collected data to the computer; the computer data processing software carries out the display, memorization and analysis of the collected data, draws the dynamic curves with changed parameters and realizes the memorization and printing functions of the parameter curves; the remote wireless transmission equipment is connected with the computer, realizes the remote timing transmission of the collected data, remote automatic alarming for the test failure or abnormity and the remote real-time data query for the testing personnel, receives the control instructions sent by the remote terminals simultaneously, and realizes the remote control of the turn-on/off of the system.