195 results about "Ring number" patented technology

The invention discloses a feedback processing method and system for HARQ(Hybrid Automatic Repeat Request)-ACK (Acknowledge Character). The method comprises the following steps that when the UE (user equipment) is provided with a plurality of service districts, the uplink subframe and the downlink subframe is configured as 1 or 6 and the size of the tying window is 1, the substation sends 0 and/or 4 in the form of DCI to the UE, wherein the two bit downlink allocation index (DAI) information of 0 and/or 4 in the form of DCI is used for indicating the downlink scheduling situation of the current subframe; and the UE determines the HARQ-ACK bit sequence and/or determines the RE number occupied by the HARQ-ACK bit sequence according to the DAI information. The method and the system achieve the effect that the size and the occupied resource unit of the HARQ-ACK bit sequence meets the practical requirement.

The invention discloses a system for generating a radial Bessel-Gaussian beam. The system comprises a beam expander, a computer-controlled spatial light modulator, a vortex phase plate and a radial polarization convertor that are sequentially arranged in a light direction of a light source generating linearly polarized light, wherein a topological charge of the vortex phase plate is 1; and a calculation hologram generated by a computer is loaded to the spatial light modulator to form a calculation holographic grating, so that a first order Bessel-Gaussian beam is generated. The vortex phase plate is rotated to ensure that phase structure distribution of the vortex phase plate is right opposite to the phase structure distribution of the Bessel-Gaussian beam coming out of the spatial light modulator, and a vortex phase of the Bessel-Gaussian beam is eliminated. Then, the Bessel-Gaussian beam with the vortex phase being eliminated passes through the radial polarization convertor. Radial polarization Bessel-Gaussian beams with different ring numbers can be generated by generating different holograms due to the flexibility of the holograms of the computer, and have self-restorability.

The invention provides a method for constructing a quasi-cyclic low-density parity-check code (QC-LDPC code), which comprises the following steps: determining a parameter of an encoding matrix; constructing an exponential matrix M (H) of a QC-LDPC code parity check matrix; using a progressive edge growth (PEG) algorithm of the QC-LDPC code parity check matrix to initialize the exponential matrix M (H); endowing the exponential matrix each nonnegative element to form a cyclic shift value with the longest minimum ring and the least ring number; carrying out iteration replacement on the elements in the exponential matrix; and completing the iteration replacement process of the exponential matrix by an exponential matrix iteration assignment algorithm of the QC-LDPC code parity check matrix. The method for constructing the QC-LDPC code of the invention can guarantee the girth and the average minimum girth of the code maximized so as to obtain excellent error code correcting performance.

The invention provides a simple method for preparing a copper (II) ion-supported SCR catalyst having a NOx purifying performance at a low temperature. The SCR catalyst is prepared by mixing hydrogenation synthesized zeolite crystals with the largest oxygen ring number of 8-12 and a three dimensional structure with an aqueous solution of copper (II) nitrate ions or copper (II) chloride ions with the pH value of 0.1-3.0 without filtering or washing. The BET specific surface area of the copper-based SCR catalyst is 50-80m<2>/g, the copper-based SCR catalyst has low temperature activity, hydrothermal durability and NOx purifying performance, and the exhaust gas NOx purifying rate of the copper-based SCR catalyst at below 200DEG C reaches above 80%.

The invention discloses an automatic target identifying method based on an image processing technology, which comprises the following steps of: 1, carrying out binaryzation processing to a preprocessed target surface image by selecting a proper threshold to ensure that the processed image only has target ring lines and bullet holes; and obtaining radius of each of other ring lines in sequence; 2, distinguishing by utilizing the different sizes of radii of the ring lines and the bullet holes, analyzing the image with a mathematical morphological image processing method, then carrying out repeated dilation and erosion operation on the image to obtain the image containing the bullet holes, and then finding out a gravity center pixel coordinate of each bullet hole; 3, calculating the center coordinate of each bullet point by calculating mean values of all pixel coordinate in the bullet point, and testing an area expression which the center coordinate meets by substituting the center coordinate to the expression of each area so as to further determine the ring number of the bullet point so that the target is identified. The invention has the advantages of high-efficiency operation and accurate target identification.

The invention discloses a distribution method of PCIs (Physical Cell Identities) in a long-term evolution network. The method comprises the following steps of: firstly, partitioning two respectively continuous PCI spaces in a PCI range, wherein one is used for distributing PICs in a picocell, and the other is used for distributing PCIs in a micro base cell; distributing a PCI space large enough to the micro base cell so that the PCI multiplexing distance in the micro base cell is far enough, which means the multiplication of ring number of enough macrocell clusters forming the micro base by the cell diameter, and the enough large PCI space means that the number of the distributed PCIs is at least equal to the total cell number of the enough macrocell clusters. On the premise that the macrocell clusters and the picocell are ensured to use different PCI spaces, the PCI multiplexing distance of the macrocell is far enough, PCI conflict probability among picocells is lower, and resources are preserved for network expansion.

A polarizing plate includes, in the following order: a transparent protective film; an adhesive layer; and a polarizer, and the transparent protective film has a thickness of from 5 to 60 μm and contains at least one resin and a compound (A) having at least one hydrogen bond-forming hydrogen-donating group and a ratio of a molecular weight to an aromatic ring number of 190 or less.

The invention discloses a resistance spot welding nugget nucleation dynamic quality nondestructive testing method which comprises the following steps of: acquiring the structure load acoustic emission signal in the resistance spot welding process, and drawing a dynamic curve chart; extracting the acoustic emission signals of the electrode loading stage, nugget nucleation stage and crack generation stage from the dynamic curve; counting the ringing number and total energy of the acoustic emission signals respectively; splitting the resistance spot welding sample nugget, and measuring the diameter, height and crack length of the actual nugget; establishing a sample pair to form a training set; establishing a nugget size artificial neural network and a crack length artificial neural network respectively, and training the obtained sample by use of the Back Propagation neural network algorithm; and applying the trained model to the real-time detection of the nugget size and the crack generation. According to the invention, online testing of the quality of multiple common resistance spot welding nuggets of metal structure material can be realized relatively accurately.

The invention provides a method for identifying damage of aircraft structural parts based on acoustic emission detection. The method comprises the following steps: applying load to rivets, loose bolts and cracks on the aircraft structural parts so that an acoustic emission sensor can respectively receive a rivet deformation acoustic emission signal, an acoustic emission signal generated by the loose bolts and a crack propagation acoustic emission signal on the aircraft structural parts; obtaining five characteristic parameters of the three signals, such as duration time, signal amplitude, ring number, energy and peak frequency, and distinguishing the characteristics of the parameter values of the three signals; and comparing the characteristic parameters of the three signals, drawing 'energy-peak frequency' and 'energy-amplitude' progress graphs of the three signals, and distinguishing the graphic characteristics of the three signals. The method provided by the invention has the advantages that detection signals for micro-deformation of the rivets caused by stress concentration, bolt looseness, fatigue crack propagation and the like on the aircraft structural parts can be distinguished so as to early find structural change; therefore, the method is significant to safety operation of equipment.

The invention discloses a downlink data repeated transmission method and equipment. The problem that the inter-sub-frame merging of the data cannot be performed in multi-sub-frame repeated transmission since the available RE numbers for the resource mapping of the data transmission in different sub-frames are different is solved. The method comprises the following steps: determining a sub-frame set of a physical downlink channel for repeated transmission; beginning mapping from a specific start symbol position in the first time slot of the current sub-frame while performing the resource mapping on the physical downlink channel in each sub-frame of the determined sub-frame set, mapping to all resources except the resource corresponding to a reference signal for demodulation; and sending the physical downlink channel according to the resource mapping mode.

The invention discloses a petroleum drilling well depth measuring system and method. The system comprises a winch sensor, a pressure sensor, a hanging load sensor, a laser range finder, a field controller and a monitoring operation terminal. According to the method, the laser range finder is fixed on a large hook during system initial assembly debugging, the large hook is controlled by a winch to move vertically, the onsite controller records the displacement value of the laser range finder and the ring number of the winch in real time to form the corresponding relation between the value of each ring and the displacement value, and the height value of the large hook is read automatically according to the ring number value program of the winch during normal during normal well drilling. In the drilling process, a hydraulic power tong pressure sensor transmits signals to indicate unfastening or fastening and the corresponding hanging load value change, a controller judges whether a drill pipe enters or leaves through the program, and the height change values of the large hook is accumulated to obtain the well depth and the drill bit position value. The system and method overcomes the shortcoming that the traditional measuring mode is in accurate in measurement or complex in measurement work and inconvenient to operate, and is capable of accurately measuring the well depth and the drill bit position and capable of displaying the well depth data in real time without manual operation.

The invention discloses an SCR catalyst containing synthetized zeolite and copper-iron composite bases, in particular an SCR catalyst which still has a NOx purification property in a low-temperature region after an aquathermal durability test and a sulfur oxide durability test. The preparation method of the SCR catalyst disclosed by the invention comprises the step of concocting a hydrogenated synthetized zeolite crystal with an aqueous solution through a mixing working procedure, wherein the largest oxygen ring number of the hydrogenated synthetized zeolite crystal is 8, and the hydrogenated synthetized zeolite crystal has a three-dimensional structure; the pH value of the aqueous solution is 0.1-0.7, and the aqueous solution contains copper (II) ions and iron (III) ions; a filtration working procedure and a cleaning working procedure are not needed.

An embodiment of the invention provides a method and a base station for sending resource blocks (RBs) and performing combined channel estimation, and a piece of user equipment. The method of sending the resource blocks comprising that: demodulation pilot of an RB group used for performing combined channel estimation is configured for the user equipment by the base station, so that resource unit RE number occupied by the demodulation pilot of each RB in a demodulation pilot pattern after the configuration is less than or equal to N (N=XY), and the total number of RE occupied by the demodulation pilot in the RB group is less than N*M, wherein, the RB group is a combination of a plurality of RBs, M is the number of RBs included in the RB group, X is the number of OFDM symbols occupied by the demodulation pilot configured in a single RB on performing the single RB channel estimation, and Y is the number of subcarriers occupied by the demodulation pilot in each OFDM symbol, in which the demodulation pilot configured in the single RB is located, when the single RB channel estimation is performed. The method can correspondingly configure the pilot according to the number of the resource blocks from the combined channel estimation, thereby saving the transmission resources and increasing the data transfer rate.

The invention discloses a method for distributing raw materials with high zinc content in a blast furnace with a bell-less top, which comprises the following steps of: (1) controlling ore batch weight to be greater than a critical value, and ensuring that the average thickness of ore at the furnace throat is 8 to 10 percent of the diameter of the furnace throat; (2) adopting a material distribution mode from a small angle to a large angle increasingly at distributor chutes on the furnace top, and ensuring that small particle burden and powder caused by mass flow particle segregation are distributed from the center of the blast furnace to a part 1/3 away from the edge of the furnace wall when a material tank discharges materials; (3) selecting double-ring single pile top large-angle distribution for ore and coke gears, distributing outer-ring ore according to the maximum angle, ensuring that the ore and coke angular difference is -2 degrees and the angular difference of the inner and outer rings of the ore and the coke is 6 degrees, controlling the materials distributed in the inner ring to account for 50 to 60 percent of the total burden, making the ring number of the outer ring distribution at least two, and ensuring that the outer-ring distribution pipe top covers the inner-ring distribution pipe top; (4) adopting a positive packaging and ore-coke unequal line packaging method; and (5) regularly performing tank turning operation on tank-combined blast furnace with the bell-less top, and controlling 4 to 5 tank turning cycle periods in a material column.

The invention discloses a turbocharging executing device spring processing process, which is characterized by comprising the following steps of 1, material selection; 2, spring coiling: a steel wire blank is coiled into a cylindrical spiral spring according to the prefabricated height, outer diameter and ring number; 3, tempering: the spring is placed into a temper furnace for distressing temper; 4, spring grinding: the two end surfaces of the spring are flatly ground; 5, flaw detection; 6, shot blasting: coarse and fine twice shot blasting are adopted, the diameter of the first shot blasting is greater than the diameter and the intensity of the second shot blasting; 7, secondary tempering; 8, standing processing; 9, heat forming processing; 10, fine grinding; 11, sorting; 12, packaging. Through special heat treatment, the produced high-quality spring has the hardness being 45-50HRC, the full-stroke reciprocating movement in high-temperature environment being 280 DEG C can reach three hundred thousand times, and the elasticity loss rate does not exceed 40 percent.