3810results about How to "Accurate" patented technology

Disclosed are a method for transmitting/receiving channel state information (CSI) in a wireless communication system and a device therefor. Specifically, a method for transmitting channel state information by a terminal in a wireless communication system may comprise the steps of: determining CSI for a serving cell in an unlicensed band; and transmitting the CSI at a periodic CSI report time point within a reserved resource period (RRP) which is a time period reserved for transmitting/receiving data in the serving cell.

The invention discloses a pot with an intelligent temperature control device, which comprises a pot body with a pot handle. The pot is characterized in that a temperature probe is arranged in the pot body and is separated from the pot body through a thermal-insulating layer; a temperature control circuit board which is in signal connection with the temperature probe is arranged in the pot handle; a signal transmitter is arranged on the temperature control circuit board. As the temperature probe is placed in the pot body, the temperature in the pot can be more accurately grasped, controlled and regulated, and a user can accurately grasp the temperature in the pot during cooking, so that the nutrition and the mouth feeling of food are better.

The invention provides a double-workbench drive laser processing machine and a processing method thereof, and relates to the technical field of laser precision processing equipment. The double-workbench drive laser processing machine is provided with a first workbench, a second workbench, a laser beam transfer device (LBDS), a vacuum adsorption chuck and an image acquisition device. The processing method comprises the following steps: carrying out P1 non-contraposition and P2 contraposition on the basis of a unified affine transformation model; mapping a workpiece coordinate space to a processing coordinate space, i.e. a first workbench processing coordinate and a second workbench processing coordinate; and transferring a CAD data pattern to the workpiece, thereby controlling a feature position error of the processed pattern within an ideal accuracy range. By using the invention, the working efficiency of the P1 procedure can be effectively enhanced and the problem of automatic visual contraposition accuracy caused by workpiece deformation in the P2 procedure can be effectively solved, thereby reducing the cost and enhancing the productive capacity. The invention has the advantages of simple structure, and unique principle and method. The invention is especially suitable to be used on a large-scale LTCC/HTCC production line of processing technology.

The invention provides a full-automatic pipe cutting machine comprising a frame, and a charging device, a feeding device, a cutting device, a measuring device and a control device which are sequentially arranged on the frame horizontally; the cutting device comprises a cutter holder which is arranged on the frame, a plurality of first motors which are lined horizontally along a longitudinal direction and can be arranged on the cutter holder by moving up and down, a first cylinder which is connected with and drives each first motor to move up and down synchronously, a circular saw blade which is arranged on the output shaft of each first motor, a second motor which is in transmission connection with the input shaft of each first motor through a first transmission mechanism, and a bearing piece which is arranged on the tool rest below each circular saw blade and is used for bearing a pipe at a cut part; and the measuring device comprises a guide rail which is horizontally arranged on the frame, a slide frame which is movably arranged on the guide rail, a driving mechanism which is connected with and drives the slide frame to move along the guide rail, a pipe baffle which is arranged on the slide frame and a first pipe clamping mechanism which is horizontally arranged on the slide frame along the longitudinal direction. According to the full-automatic pipe cutting machine, more than one pipe can be cut at one time, and the machine has the advantages of high cutting efficiency, good cutting quality and the like.

An articulated anchor and a prestress tensioning method of high strength fibre composite sheet relate to an anchor holder used to perform prestress tensioning to the high strength fibre composite material of the enhancement or reinforcement engineering structure and a method thereof. The articulated anchor of the invention comprises an anchor head and a compression and locking device, and the articulated anchor is characterized in that the anchor head contains a raised head anchor and a concave block. The method of the invention is that the articulated anchor is used to clamp and anchor the two ends of FRP sheet, a jack is used to apply a tension on the concave block and the concave block pushes the raised head anchor to perform prestress tensioning to FRP sheet. The articulated anchor of the invention has simple structure, convenient installation and low cost; and the method of the invention is simple, intuitive and practical, and can ensure the tensioning uniformity of FRP sheet, made full use of the intensity of FRP sheet and effectively increase the bearing capacity of the engineering structure. The articulated anchor of the invention can be widely used to enhance or reinforce the large engineering structures such as bridges or buildings and especially to perform external prestressing reinforcement to longspan concrete beams, longspan concrete slabs and the like.

The invention discloses an automatic calibration line for intelligent type low-tension current transformers, comprising a warehouse in-out device, a loading and unloading device, an automatic identification device, a transmission device, an automatic line connecting and disconnecting device, a calibration device and a sorting and labeling device, wherein the warehouse in-out device realizes the automatic warehouse in-out of the intelligent type low-tension current transformers; the material loading and unloading device realizes the automatic loading and unloading of the intelligent type low-tension current transformers; the automatic identification device realizes the automatic identification of the intelligent type low-tension current transformers; the transmission device realizes the automatic transmission of the intelligent type low-tension current transformers; the automatic line connecting and disconnecting device realizes the automatic line connection of the intelligent type low-tension current transformers for the calibration by the calibration device and also realizes the automatic line disconnection of the intelligent type low-tension current transformers; and the sortingand labeling device realizes the automatic sorting of the intelligent type low-tension current transformers. The automatic calibration line is free from manually carrying out the warehouse in-out, the transmission, the identification, the sorting, the loading and unloading and the line connection and disconnection on the intelligent type low-tension current transformer when calibrating the intelligent type low-tension current transformer, and has the advantages of no personal error, high calibration efficiency, good automation degree and capability of automatically measuring multiple transformers. The invention also discloses an automatic calibration method of the intelligent type low-tension current transformer.

The invention discloses a full-automatic high-precision double-printing-platform screen printing machine. The full-automatic high-precision double-printing-platform screen printing machine comprises a machine frame, material conveying mechanism, a screen printing plate mounting and alignment mechanism and a screen printing mechanism and further comprises a double-printing-platform transfer assembly located on the machine frame, wherein the material conveying mechanism is located on the machine frame; the double-printing-platform transfer assembly comprises a positioning position, a printing position, a lifting printing platform and a printing platform, the lifting printing platform and the printing platform are located in the positioning position or the printing position alternately and switched between the positioning position or the printing position; the material conveying mechanism is used for conveying to-be-printed materials to the positioning position; and the screen printing plate mounting and alignment mechanism and the screen printing mechanism are arranged above the printing position for printing the to-be-printed materials located in the printing position. By means of the full-automatic high-precision double-printing-platform screen printing machine, while one to-be-printed material is printed, another to-be-printed material is automatically fed onto the printing platform and photographed and positioned, and the technical problems that most of existing full-automatic flexible-plate screen printing machine adopts single-platform linear material conveying, and consequently the system efficiency is low are solved.

The invention discloses a pipe end hoop welding and fixing device for an automobile pipe, and belongs to the field of automobile pipe end machining equipment. The device comprises a worktable, a pipe head positioning plate and clamps, wherein the pipe head positioning plate and the clamps are fixed to the worktable. The pipe head positioning plate is provided with a pipe limiting groove and a hoop limiting groove. The clamps comprise a hoop clamp, a lateral pushing pipe clamp and an annular hoop pipe clamp, wherein the hoop clamp can press a hoop arranged outside the automobile pipe in a sleeving mode to the interior of the hoop limiting groove; the lateral pushing pipe clamp is used for pushing the automobile pipe to the interior of the automobile pipe limiting groove to be pressed; the annular hoop clamp is used for clamping and positioning the automobile pipe. The positions of the three clamps are adjustable. The automobile pipe limiting groove and the hoop limiting groove form a step type annular groove. By means of the pipe end hoop welding and fixing device, the pipe end of the automobile pipe and the hoop can be precisely positioned, the pipe end and the hoop can not deviate in the machining process, clamping marks can not be generated on the automobile pipe, and the automobile pipe can not be damaged.

This invention related to a method for computing the minimum edit distance, measured as the number of insertions plus the number of deletions, between two sequences of data, which runs in an amount of time that is nearly proportional to the size of the input data under many circumstances. Utilizing the A* (or A-star) search, the invention searches for the answer using a novel counting heuristic that gives a lower bound on the minimum edit distance for any given subproblem. In addition, regions over which the heuristic matches the maximum value of the answer are optimized by eliminating the search over redundant paths. The invention can also be used to produce the edit script. The invention can be modified for other types of comparison and pattern recognition.

The invention discloses a safety venous indwelling needle with a needleless interface positive-pressure closing valve, comprising a puncture needle, a puncture needle seat and a handle, wherein, the puncture needle is formed into a puncture needle protection assembly by a puncture protection sleeve, a spring, a plunger latch and an escapement clamp; a venous indwelling needle is formed by an indwelling needle soft tube, a puncture needle guide tube, an indwelling needle seat and a sealing plug; a needless interface positive-pressure closing valve is formed by a shell, a piston, a seal ring, a spring, a connecting soft tube and a base; the positive-pressure closing valve and a liquid out plug separated structure do not involve the indwelling needle, are easy to operate, can reduce pain, and avoid the indwelling needle from taking off; the puncture needle protection sleeve can protect the puncture needle before and after the use of the indwelling needle, has the advantages of without added length, small and exquisite volume, good hand feel, accurate control, high puncture precision, and convenience for puncture operation and the like, can automatically retract to protect the puncture needle, can avoid acupuncture injury on medical workers, has positive pressure closing function, can prevent venous blood flowing back and overflowing, prevent blood from being polluted and avoid the blood from forming blocking in the indwelling needle, does not need heparin tube closing and other operation, has needless connection function, and can avoid needle injury, improve working efficiency and protect the safety of medical workers and patients.

A celestial direction finding system. The system includes an inclinometer, at least one camera for imaging both the daytime sky and the nighttime sky and a computer programmed with a sun, moon and star catalog and algorithms for automatically determining directions based on positions of celestial bodies imaged by at least one camera and incline positions measured by the inclinometer. In a preferred embodiment all of the above features are combined in a single battery operated miniature celestial direction finding module. Geographical positions of nearby objects can be determined with the addition of a rangefinder and knowledge of the geographical position of the camera. The geographical position of the system in preferred embodiments can be determined with the addition of a GPS unit.

For accurately measuring the power consumption, the invention provides a power consumption prediction method for a system. The method comprises S1 data acquisition: acquiring the power utilization information of residents, industrial users and business users through an intelligent ammeter, acquiring the influence factor information through an external system, and generating a history table for the users at the same time; S2 analysis of power utilization rules for the users: performing fitting analysis of the acquired power utilization information of the users by means of combination with the history table, and obtaining the power utilization rules for the users through analysis; S3 analysis of influence factors: setting a load fluctuation range according to the user type, and performing analysis of influence factors for the time point surpassing the fluctuation range to obtain the influence value of each influence factor for the power consumption of the users; and S4 power consumption prediction for a system: predicting the future short-term power consumption for the system by means of combination of analysis of power utilization rules and analysis of influence factors. The prediction method shows a brand new development direction for short-term power consumption prediction in future, and can be widely applied to the prediction field with great significance.

The invention discloses a high voltage direct current power transmission line protection method based on a voltage and current mutation direction. The method comprises the following steps that when a fault exists in a line area, the directions of the voltage mutation quantity and the current mutation quantity at the protection measurement of a rectifying side are opposite, and the directions of the voltage mutation quantity and the current mutation quantity at an inverter side are the same; the feature is also applicable for anode lines and cathode lines; and faults at other areas do not satisfy the condition. Thus, the protection criterion of the high voltage direct current transmission line is structured and the protection method is disclosed. As the method provided by the invention is adopted in the protection of the direct current transmission line, actions can be performed fast and accurately when fault lightning, high impedance earthing faults and pole-pole faults exist in the line area; no error action is carried out under the situations of lightning disturbance, faults outside the line protection area and the like; the protection method is simple and clear; the requirement on communication channels is not high; the requirements on data calculating speed and sampling frequency are low; no synchronizing processing is required for sampled data; and various operation ways of a bipolar direct current power transmission system are applicable, and the practical value is high.

The invention discloses a hybrid main storage architecture based efficient dynamic page scheduling method applied to a memory controller of a horizontal storage architecture which comprises a first storage medium and a second storage medium. The hybrid main storage architecture based efficient dynamic page scheduling method comprises the steps of configuring an access list respectively in each storage medium; configuring a stack respectively for each storage medium in the memory controller; carrying out dynamic management fore recently accessed pages in the storage medium based on the page state records recorded in the stack and the reading-writing access time recorded in the access list, placing the pages with high writing hot-degree in the first storage medium, storing the frequently read pages in the second storage medium, wherein the first storage medium is a DRAM, and the second storage medium is NVM. The hybrid main storage architecture based efficient dynamic page scheduling method can master the historical access information more precisely to adapt to the application scenes with relatively weak locality, can greatly reduce frequent and ineffective page migration quantity between the hybrid memory mediums, and can improve the utilization rate and the access hit rate of a main memory.

The invention relates to a permanent magnet synchronous motor control performance automation test system, which comprises a communication subsystem, a host computer subsystem, a permanent magnet synchronous motor control subsystem, and a direct-current machine control subsystem; wherein a control circuit in the permanent magnet synchronous motor control subsystem is connected with a RS232 switching bridge device in the communication subsystem; a Siemens 6 RA 7025 direct current speed governor in the direct-current machine control subsystem is connected with a communication card CBP2 of the direct current speed governor in the communication subsystem; the communication card CBP2 of the direct current speed governor in the communication subsystem and the RS232 switching bridge device are connected with a programmable controller (PLC) in the host computer subsystem; the communication is realized between the permanent magnet synchronous motor control subsystem and the host computer subsystem by the programming. The permanent magnet synchronous motor control performance automation test system has the advantages of increasing the reliability and capacity of resisting disturbance of the system, realizing the networking control of the whole system, increasing the real time of the system, being capable of simulating any load and saving the energy.

The invention relates to an MTPA control method of a built-in PMSM (Permanent magnet synchronous motor) and an MTPA control system. According to the method, an optimal theoretic torque angle of stator current discrete spots and rotating speed discrete spots is calculated, a variable search zone is divided, a torque angle outputting a largest torque is searched in the variable search zone and is taken as an optimal actually-measured torque angle, binary quadratic polynomial fitting for a series of optimal actually-measured torque angles is carried out to acquire a fitting formula of an optical algorithm torque angle, a direct-axis current given Id<*> and an alternative-axis current given Iq<*> of a motor under a stator current Is are calculated according to the optical algorithm torque angle and the stator current Is and are utilized as current ring givens of the built-in PMSM. Through the MTPA control method based on variable zone search and binary quadratic polynomial fitting, higher efficiency and precision are realized.

A processing system relating to ADS-B track and flight design is provided, which comprises an information collection module that respectively collects and processes the needed ADS-B track information and flight design information, a number calling and status judgment module that respectively judges the correlation between the number calling and status information of ADS-B track information and flight design information; if the number calling identifies and the status correlates with each other, it can be judged that the ADS-B track is related to the flight design; if the number calling differs and the status is irrelevant, it can be judged that the ADS-B track is not related to the flight design; if the number calling and status correlate in only one item, it can be judged that the track is possibly related to the flight design and further judgment shall be made to confirm whether the possible correlation can be eliminated or not; a possible correlation judgment module, which further judges and processes the ADS-B track and flight design information; if the possible correlation is eliminated by judgment, it can be judged that the ADS-B track is related to the flight design; otherwise, it can be judged that the ADS-B track is not related to the flight design. Therefore, the invention, which ensures the accuracy of relevant judgment and the practicality of project, effectively resolves the problems about the correlation between ADS-B track and flight design.

The invention discloses a determination method of tunnel surrounding rock prestressing force reinforcing anchor rod length and radial prestressing force values. According to the surrounding rock elastic-plastic theory and the plastic zone distribution regulation, and, on the basis that a tunnel plastic ring radius R and a surrounding rock pressure force are comprehensively determined, the minimum length value and a radial minimum prestressing force value of a tunnel surrounding rock reinforcing anchor rod are determined. The determination method advantageous in that, according to the surrounding rock elastic-plastic theory and the plastic zone distribution regulation, and, on the basis that the tunnel plastic ring radius R and the surrounding rock pressure force are comprehensively determined, the minimum length value and the radial minimum prestressing force value of the tunnel surrounding rock reinforcing anchor rod are determined, the calculation process is relative clear and concise, and a measured result is high in accuracy and accurate, has a small error compared with the actual and can guide the practice well.

By ejecting a high-pressure gas, supplied from a high-pressure gas supply source, from a gas-ejecting part 116 via a gas supply pipe 118 and a vent line 114a inside a cylindrical support 114 at a prescribed pressure, namely a pressure that cancels the gravity of the substrate G or a pressure which exceeds the same, when the substrate G is loaded on a stage 100, the substrate G substantially floats from support pins 108. Since the gas-ejecting part 116 is formed into a horn shape, air which hits the lower face of the substrate G smoothly passes to the outside through a gap g without producing vortices.

The invention discloses a free-combination automatic-weight adding device, which is used for automatic weight adding in the pressure detection field. The device comprises a group of cylindrical weights (6) arranged in a sleeving mode, and the upper end of each weight layer (6) is provided with a driving mechanism for driving the weight (6) to move up and down; and a weight tray (8) with a weighing or pressure detection mechanism additionally provided is arranged below the weight (6). Heights of the weights (6) are sequentially decreased from inside to outside, a supporting groove (41) is arranged in the exposed column surface of the upper end of each weight, and supporting rods, an inner ring (13), a middle ring (14) and an outer ring (15) are correspondingly arranged. The free-combination automatic-weight adding device is used in the pressure detection or weighing system, free combination and automatic weight adding of the weight adding operation can be realized, the operation is convenient, and weight adding is accurate.

The invention provides a method of para position allocation and ,mixing cultivation of planting grass for afforestation on purple hills, which comprises the steps of: (1) division of land types: purple hilly lands are divided according to the acidity, basicity and lithology of the lands, soil erosion, soil thickness and terrain features; (2) selection of species of trees and grasses: species of trees and grasses which are applicable to grow in varied purple lands are selected according to the selection experiments of the different types of species of trees and grasses used for afforesting of purple hilly lands, and fitting degrees of the species of trees and grasses to each kind of land are specified; (3) para position allocation of the species of trees and grasses with the kinds of the lands: corresponding species of trees and grasses are allocated on the most suitable or relatively suitable lands; (4) mixed disposition of trees: different optimized disposition modes for purple hilly mixed forests are selected according to the mixed experiments of the trees for different kinds of lands of hills and hilly areas with purple soil, and trees and bushes, legumes and non-legumes, species of trees of deep root system and shallow root system, horizontally growing type and vertically growing type, soil fixing type and soil improved type are mixed. The method of the invention adopts trees, brushes and grasses to be planted on the most suitable and relatively suitable hills with purple soil, thus realizing precise para position allocation, high survival rate being up to over 90 percent and greatly accelerating the growing speed and forest establishment speed.

This invention relates to a method for processing second-order blind holes of high density interlinked CB including the following steps: providing a CB with a circuit on one side, forming a first back-glued copper foil on the surface of the circuit, forming multiple first copper windows in the copper foil layer, forming a second back-glue copper foil on the surface of the first copper foil with the first copper windows, utilizing a laser to open multiple second copper windows corresponding to the first ones in the layer of the second copper foil, utilizing a second laser to eliminate the subs of the two copper foils from the second copper windows so as to form multiple second-order blind holes.