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Method for realizing S curve acceleration and deceleration of motion control system
ActiveCN103713581ASimple structureSimplify complexityNumerical controlClassical mechanicsMotion control
Provided is a method for realizing S curve acceleration and deceleration of a motion control system. (1) The realization condition of S curve acceleration and deceleration is as follows: the basic limiting condition formula of the S curve acceleration and deceleration control process is shown as formula (6): t0=t2-t1=t4-t3=t6-t5, at0=at1=-at4=-at5 and Vt0=Vt2-Vt1=Vt3-Vt4=Vt5-Vt6; and the complete S curve acceleration and deceleration process satisfies formula (7): L / VL>=t0+delta t(1-2)+delta t(3-4)+delta t(5-6), and aM<=aMax. (2) Recursion formulas of S curve acceleration and deceleration are as follows: the initial velocity is set to V0, the current sampling time is k, the corresponding accelerated acceleration is Jk, the acceleration is ak, the velocity of movement is Vk, and the recursion formulas based on the previous time are respectively formula (8): Jk=JM (0<=t<=t0, t5<t<=t6, 0<=k<=nt0, nt5<k<=nt6), Jk=0 (t0<t<=t1, t2<t<=t3, t4<t<=t5, nt0<k<=nt1, nt2<k<=nt3, nt4<k<=nt5) and Jk=-JM (t1<t<=t2, t3<t<=t4, nt1<k<=nt2, nt3<k<=nt4), formula (9): a0=0 and ak=a(k-1)+Jk*delta t, and formula (10): V0=0 and Vk=V(k-1)+ak*delta t.
Owner:NANJING INST OF TECH
Control circuit for realizing S curve acceleration and deceleration of motion control system
ActiveCN103713660ASimple structureSimplify complexitySpeed/accelaration control using electric meansControl systemProcessor register
Provided is a control circuit for realizing S curve acceleration and deceleration of a motion control system. A CPU bus interface circuit writes the accelerated acceleration, the average speed, the initial speed, the termination speed and instruction displacement parameters into corresponding registers in an instruction parameter register and sends out the working state of the circuit in response to an external request; an initialization circuit reads instruction parameters in the instruction parameter register, calculates the total speed change and reasonably plans the speed change of each section; an accelerated acceleration integral circuit and an acceleration integral circuit execute integral operation and writes the integral operation into corresponding registers in an execution register; a drive pulse inter-pulse calculation circuit reads a speed register and calculates the inter-pulse count value of drive pulses; a pulse generating circuit uses the inter-pulse count value to count a reference clock so as to achieve the required drive pulses; a displacement control circuit counts the output drive pulses, calculates the output displacement and writes the output displacement into a displacement register; and a state transfer and control circuit causes the S curve acceleration and deceleration control circuit to act in an orderly and coordinated mode in response to the reference clock.
Owner:NANJING INST OF TECH
Human body behavior recognition method based on deep learning
PendingCN114220176AReduce the number of issues that are not followed upHigh outputImage enhancementImage analysisHuman bodyHuman behavior
The invention relates to a human behavior recognition method based on deep learning, and the method comprises the steps: S1, collecting data: collecting the data, and forming a data set; s2, data set processing: inputting data sets, performing personnel detection and tracking on data in the data sets, extracting skeleton information of each data set through human body posture estimation, and performing posture estimation to obtain a posture estimation result; and S3, dangerous behavior analysis: training and constructing an ST-GCN recognition model by using the data set, inputting the attitude estimation result into the ST-GCN recognition model for dangerous behavior analysis and recognition, obtaining a recognition result, and outputting the recognition result. According to the method, human body detection is carried out by utilizing a YOLO V4 algorithm of target detection, target tracking is carried out on a human body, a DeepSort tracking algorithm is adopted, bone joint points are extracted by utilizing OpenPose, and finally human body behavior recognition is carried out on a bone sequence by utilizing an ST-GCN recognition model.
Owner:NANJING HOWSO TECH
Circuit and method for detecting audio frequency
InactiveCN102404669AConvenient and fast calculation methodLower requirementTransducer circuitsPulse numberComputer module
The invention provides a circuit and a method for detecting audio frequency, wherein the audio frequency detecting circuit comprises a waveform conversing module for converting the collected audio frequency sine wave signal into square wave signal, and a frequency detecting module for detecting the audio frequency according to the square wave signal. The audio frequency detecting circuit specifically comprises a counting sub-module for counting the pulse number of the square wave signal in the pre-set time and a calculating sub-module for calculating the audio frequency parameter according to the pre-set time and the pulse number. The circuit and method for detecting audio frequency can improve the use efficiency of CPU, reduce manufacturing cost, shorten the research and development period and improve the test speed and efficiency.
Owner:赵跃庆
Sample warper and method for forming a sample warp
The warp pattern warping machine, with a warping drum (1) with movable transporting surfaces (2) arranged on the circumference of the drum, thread guides (14) arranged on a thread guide carrier (15), and a creel (7) from which the thread guide draws threads, has the warping drum (1) and the thread guide carrier (15) movable in relation to each other in the axial direction. The thread guide carrier (15) and the creel (7) are interconnected in the axial direction, wherein the warping drum (1) and the creel (7) are movable in relation to each other in the axial direction. The warp pattern having excellent uniformity can be produced with different galloon with little additional cost. Thus the warping drum and the thread guide carrier are moved in the axial direction in relation to each other.
Owner:KARL MAYER STOLL R&D GMBH
Method for simply and fast redirecting video
ActiveCN103327261AEasy to operateEasy speedTelevision system detailsColor television detailsWidth ratioTime processing
The invention discloses a method for simply and fast redirecting a video and belongs to the field of video processing. The method for simply and fast redirecting the video is based on content and is suitable for different user terminals. The video with a fixed size can be self-adaptively displayed on terminal devices of different types, and when the length-to-width ratio of the video is changed, the fact that an important object is free of tensile deformation can be maintained as far as possible, and the ornamental quality of the video is ensured. An algorithm is simple in overall operation, a subsequent real-time processing module is high in speed, real-time processing can be carried out on different targets and sizes, and flexibility is good. The method has good developing and application prospect in the field of streaming media playing. The method divides the whole processing algorithm into a pre-processing part and a real-time processing part, a complex important degree calculation and a calculation of analyzing lens shift are placed in a pre-processing module, and the real-time processing module only needs to call the pre-processing result. In addition, the idea of overlaying the important degree between frames is used for ensuring the zoom consistency of the content of the front frame and the rear frame, and the method has certain application value.
Owner:BEIJING UNIV OF TECH
Combined test case generation method based on CS-SPSO algorithm
ActiveCN110334026AMaintain search capabilityImprove search capabilitiesArtificial lifeSoftware testing/debuggingCombined testAlgorithm
The invention discloses a combined test case generation method based on a CS-SPSO algorithm, and belongs to the field of software testing. The method comprises: obtaining a combination set needing tobe covered through constraint analysis; combining the two factors with the maximum values, and performing constraint analysis to obtain a final combination; determining all combinations of other elements according to a class IPO strategy; dividing the combination into N small populations, and carrying out local search on the N small populations by utilizing the simplified particle swarm, so that the advantages of local search of the simplified particle swarm are fully exerted; and taking the obtained N optimal particles as initial values of a cuckoo algorithm to carry out deep optimization, and generating a single test case. During position updating, a reflecting wall strategy is used for carrying out boundary processing on particle positions, and effective search space is prevented from flying out. The method can be suitable for the coverage tables with different coverage intensities, the scale of the combined test case set is effectively reduced, and the generation efficiency of thecombined test case is greatly improved.
Owner:ZHEJIANG SCI-TECH UNIV
Folding device
The invention discloses a folding device used for the frame of a folding vehicle, which comprises a front frame (1) and a rear frame (2). A groove (22) is arranged on the front frame (1) , the rear frame (2) is hinged with the groove (22) in a sliding way, and the front end of the rear frame (2) is hinged with the two side walls of the front part of the groove (22); the rear end of the front frame (1) and the rear frame (2) are provided with the locking device which can lock or release the rear end of the frond frame (1) as well as the relative position of the rear frame (2) corresponding to the end part of the front frame. The folding device has the advantages of simple structure, fast speed in folding and unfolding process, easy operation, and good applicability among folding vehicles.
Owner:刘君
Cold rolling unit and cold rolling process
The invention discloses a cold rolling unit and a cold rolling process, and belongs to the technical field of cold rolling. The cold rolling unit comprises a tail end rolling mill, and at least two front end rolling mills are arranged at the upstream position of the tail end rolling mill in a series-connection manner; the rolling directions of the front end rolling mills are perpendicular to the rolling direction of the tail end rolling mill, and the rolling directions of the front end rolling mills are the same; and the rolling speed of the cold rolling process ranges from 180m / min to 2000m / min. When the two front end rolling mills carry out rolling in the same direction, the sizing reduction of the first front end rolling mill is 0.3 time to 0.7 time the target sizing reduction, and the second front end rolling mill completes the target sizing reduction allowance. Compared with traditional equipment and process, the unit and the cold rolling process have the advantages that the production speed can be remarkably improved, and the enterprise income is greatly increased.
Owner:ANYANG HELI CHUANGKE METALLURGY NEW TECH RES & DEV
Rapid gel composition, product thereof and application
ActiveCN111657485AShorten the timeSimple processAcidic food ingredientsProtein food ingredientsProcess engineeringOrganic chemistry
The invention relates to a rapid gel composition, a product thereof and application. The rapid gel composition contains 1 wt%-65 wt% of a gelation agent, 1 wt%-90 wt% of a gelation accelerator and 0.25 wt%-65 wt% of an auxiliary gelation accelerator, and the rapid gel composition is in a solid form. The time for the rapid gel composition to form gel is short, and for example, the gel can be formedin 10-60 min. The rapid gel composition is in the solid form, a gel formation process is simple, and the gel product can be formed only through brewing.
Owner:SIRIO PHARMA CO LTD
Low-temperature incinerator and brominated flame retardant tailing treatment and bromine recycling device
The invention discloses a low-temperature incinerator and a brominated flame retardant tailing treatment and bromine recycling device. The low-temperature incinerator comprises an incinerator body, wherein multiple layers of circular incineration trays are arranged in the incinerator body; a feeding opening of each incineration tray on an odd layer is formed in the center of the circle of the incineration tray; and a feeding opening of each incineration tray on an even layer is formed in the periphery of the incineration tray. A rotary scraping device is arranged above each layer of incineration trays; and a rotary blow valve is arranged on the bottom of the incinerator body. The brominated flame retardant tailing treatment and bromine recycling device comprises a constant-temperature storage tank and the low-temperature incinerator; a tailing auger is arranged between a discharging opening of the constant-temperature storage tank and a feeding opening of the low-temperature incinerator; a gas phase outlet of the low-temperature incinerator communicates with a high-temperature incinerator; and a gas phase outlet of the high-temperature incinerator communicates with a spraying and absorbing tower. Near zero emission is realized during bromine recycling is realized, continuous feeding is realized, continuous production is also realized, and by continuous feeding, the incinerationefficiency is ensured.
Owner:山东默锐环境产业股份有限公司
Fully-automatic tobacco leaf harvest machine
A fully-automatic tobacco leaf harvest machine comprises a car body system, a picking system, a hoisting conveying system, a tobacco basket system, a hydraulic system and a hydraulic drive device. The picking system, the hoisting conveying system and the tobacco basket system are arranged on the car body system. The hydraulic drive device drives the hydraulic system to provide power for and control the picking system, the hoisting conveying system and the tobacco basket system of the fully-automatic tobacco leaf harvest machine. The fully-automatic tobacco leaf harvest machine is reliable in performance, low in price, suitable for domestic tobacco planting conditions, high in picking efficiency, low in tobacco leaf breakage rate, and capable of being used for picking, conveying, collecting and conveying tobacco leaves.
Owner:云南昆船电子设备有限公司
Shifting fork type non-motor vehicle
The invention discloses a shifting fork type non-motor vehicle, which is characterized in that: a vehicle body under a seat is provided with a reciprocating gearbox; the inside of the reciprocating gearbox is provided with a reciprocating gear assembly; the seat is connected with a guide rail shaft; the guide rail shaft is fixed with a spring prop; a spring is arranged between the spring prop andthe reciprocating gearbox; the spring prop is connected with a rear shifting fork; the rear shifting fork is connected with a rear shifting fork arm; the rear shifting fork arm is rotatably connectedwith the vehicle body; the lower end of the guide rail shaft is connected with an auxiliary chain wheel through the reciprocating gear assembly; the auxiliary chain wheel is connected with an auxiliary flywheel through an auxiliary chain; and the auxiliary flywheel is connected with a driving wheel. The vehicle uses the guide rail shaft to drive the reciprocating gear assembly to move through theup-and-down movement of the seat so as to drive the driving wheel to rotate through the auxiliary chain wheel and the auxiliary flywheel. The vehicle can assist in driving vehicle wheels to rotate through the up-and-down movement of the seat, thereby ensuring that the shifting fork type non-motor vehicle is quicker and easier to ride.
Owner:杨文飚
Method for decomposing particle beam fluence into pencil beams based on optimization algorithm
ActiveCN105787256AAvoid methodAvoid dependencyMedical equipmentSpecial data processing applicationsDecomposition problemDecomposition
The invention discloses a method for decomposing particle beam fluence into pencil beams based on an optimization algorithm. Particle beams are decomposed into small pencil beams based on the radiotherapy dose calculation demand of a pencil beam algorithm. The pencil beams are generally distributed in a Gaussian type. The total dose distribution is the summation of the dose distribution of each pencil beam. The method is the method by which the particle beam fluence decomposing problem in radiotherapy dose calculation of charged particles (such as proton and heavy ions) is solved, and the problem is solved by using the optimization algorithm. According to the method, the fluence distribution of the particle beams is obtained through measurement of a detector, then the particle beams are decomposed into a plurality of pencil beams based on the optimization algorithm, and the center position, size and weight of each pencil beam are obtained. The method is wide in applicability. Compared with the original distribution, the total fluence distribution after decomposition is higher in fitness; or under the same error condition, the number of the decomposed pencil beams is lower; and the radiotherapy dose calculation speed or precision of the particle beams can be greatly improved.
Owner:HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
Wall brushing method for underground continuous wall
ActiveCN102561403AEasy speedImprove verticalityArtificial islandsUnderwater structuresBrush deviceEngineering
The invention relates to the field of constructional engineering, in particular to a wall brushing method for an underground continuous wall, which is characterized in that a connecting plate is fixedly arranged on a fixing bracket; the connecting plate is connected with and fixed on an outer vertical plane of a mud scraper of a ladder body of a grooving machine; the width of the connecting plate is not greater than that of the mud scraper; and then the grooving machine starts up, the ladder body of the grooving machine drives the fixing bracket to move upwards and downwards, so that a scrubbing surface of the underground continuous wall can be cleaned and brushed. The wall brushing method has the advantages as follows: bolted connection is adopted, so that convenient disassembly and assembly as well as simple operation can be achieved; a vertical fluctuation hoist of the grooving machine achieves a high speed and a high efficiency and saves a great deal of time in comparison with a crane; the ladder body of the grooving machine is heavier, so that a wall brushing device can utilize weight advantage to remove an obstacle when meeting with the obstacle; the verticality of the grooving machine is very good, so that the thoroughness for wall brushing is ensured, and the wall brushing effect is good; and the process is shortened, and a working face is saved.
Owner:SHANGHAI YUANFANG GROUNDWORK ENG
High-precision control interpolation algorithm
ActiveCN108829032AReduce correctionSimplify writingProgramme controlComputer controlData setLong axis
The invention discloses an high-precision control interpolation algorithm, and the algorithm comprises the steps: 1, enabling a target trajectory to be mapped to each axis, selecting an axis with thelongest displacement as a main axis, and setting parameters; 2, reading a discretization speed plan data set of the main axis, judging a long-axis mode, entering a corresponding processing mode for processing; 3, performing judgment according to step 2, performing the interpolation according to speed planning of the main axis and a discretization segment if it is fine interpolation, and performingthe following interpolation of a slave axis according to a function relation; calculating the segment displacement of the slave axis according to a running segment of the main axis and a to-be-run segment this time via a main-slave function relation if it is the point control; 4, comparing the target displacement of the main axis and the driven axis with the actual shifted displacement to obtainthe actual output displacement of the main and slave axes of the last segment, and ending the interpolation. The algorithm combines a point-by-point comparison method with the minimum deviation, and uses the main-slave algorithm, thereby improving the interpolation precision and speed and reducing the design difficulty.
Owner:SHENZHEN HCN ELECTRIC APPLIANCE CO LTD
Rapid radish slicing and slitting device
The invention discloses a rapid radish slicing and slitting device. The rapid radish slicing and slitting device is mainly characterized in that 10-12 vertical cutters are evenly arranged in parallelat the right end of a square internal space defined by a cutter rest and a cutter rest base plate, the vertical cutters can adjust the radish slicing thickness and the radish slitting thickness, the right end of each vertical cutter is provided with a sharp vertical cutting edge, 8-10 transverse cutters are evenly distributed in parallel at the left end of the square internal space defined by thecutter rest and the cutter rest base plate, the transverse cutters can adjust the radish slitting width, the right end of each transverse cutter is provided with a sharp transverse cutting edge, and each transverse cutter and each vertical cutter are mutually perpendicular. When a large number of radish slices and strips are cut, the sharp vertical cutting edges at the right ends of the 10-12 vertical cutters and the sharp transverse cutting edges at the right ends of the 8-10 transverse cutters can simultaneously and rapidly cut a whole radish into the radish slices of a certain thickness orthe radish strips of a certain thickness and a certain width at a time, and cutting is rapid and easy.
Owner:池香娥
Variable-rocker surfboard
ActiveUS20170240253A1Increase rockerEasy to operateWaterborne vesselsWater sport boardsEngineeringBuoyancy
The present invention is a variable-rocker surfboard, comprising: a tapered composite panel enveloped partially or entirely in a soft foam. The tapered composite panel is oriented horizontally partially or entirely within the soft foam, such that the length, width, and thickness of the panel correspond with the length, width, and thickness of the soft foam. The objective of this design is to provide a surfboard with desirable flex characteristics that result in variable rocker, wherein the tapered composite core attributes the flex characteristics, and the soft foam provides volume for the desired buoyancy. The present invention may be provided as a surfboard blank, wherein the soft foam needs to be worked into a surfboard shape. The present invention, may also be provided as a surfboard, wherein the soft foam has been shaped to the desired design and may be laminated with an exterior skin.
Owner:WOO BRENTON MAC
Non-motor vehicle provided with reciprocating type seat
The invention discloses a non-motor vehicle provided with a reciprocating type seat. The non-motor vehicle provided with the reciprocating type seat is characterized in that a reciprocating type gear box is arranged on a vehicle body and located below the seat, a reciprocating type gear transmission mechanism is arranged in the reciprocating type gear box, the seat is connected with a guide rail shaft, a spring backer is fixed on the guide rail shaft, a spring is arranged between the spring backer and the reciprocating type gear box, the lower end of the guide rail shaft is connected with an auxiliary chain wheel through the reciprocating type gear transmission mechanism, the auxiliary chain wheel is connected with an auxiliary flywheel through an auxiliary chain, and the auxiliary flywheel is connected with a driving wheel. According to the non-motor vehicle provided with the reciprocating type seat, the reciprocating type gear transmission mechanism is driven by the guide rail shaft to rotate by means of the vertical movement of the seat, and then the auxiliary chain wheel, the auxiliary flywheel and the driving wheel are driven to rotate; the vertical movement of the seat can be used to help in driving wheels to rotate, so that he swinging type non-motor vehicle can be faster and easier to pedal.
Owner:杨文飚
Parking system based on RFID technology
InactiveCN107604842AImprove recognition accuracyHigh speedTraffic restrictionsElectricityTransceiver
The invention discloses a parking system based on the RFID technology. The system comprises a support; an automatic telescopic mechanism which is connected to two side inner walls of the support and is installed inside the support; a limit stop board and a telescopic arm which is symmetrically installed about a center pin plane of the support; a RFID radio frequency recognizer which is installed at a bottom of the inner chamber of the limit stop board and is used for reading and identifying vehicle information and a circuit mainboard which is installed at the bottom of the inner chamber of thelimit stop board and is used for controlling the telescoping of the automatic telescopic mechanism; the RFID radio frequency recognizer comprises a casing and the circuit board installed inside the casing; a control communication unit and a RF transceiver unit which are installed on the circuit board and adopt discrete devices; and antenna; the control communication unit, the RF transceiver unitand the antenna are electrically connected sequentially; the circuit board is electrically connected with the circuit mainboard; the system also comprises a video photographing unit which is electrically connected with the circuit mainboard. By means of the parking piles of the invention, unmanned manage can be realized; manpower and time can be saved; production efficiency can be increased.
Owner:UNIV FOR SCI & TECH SICHUAN
Level transfer circuit
InactiveCN102594333AHigh speedEasy speedLogic circuits coupling/interface using field-effect transistorsHemt circuitsInverter
The invention relates to a level transfer circuit. The level transfer circuit comprise a P type transistor P1 and a P type transistor P2, wherein an inverter INV is arranged between grid electrodes of the P type transistor P1 and the P type transistor P2, a drain electrode of the P type transistor P1 is connected with a drain electrode of an N type transistor N1 and a grid electrode of the N type transistor N1, the grid electrode of the N type transistor N1 is connected with a grid electrode of an N type transistor N4, a drain electrode of the P type transistor P2 is connected with a drain electrode of an N type transistor N2 and a grid electrode of the N type transistor N2, and the grid electrode of the N type transistor N2 is connected with a grid electrode of an N type transistor N 3. The level transfer circuit of the invention not only can adopt a miniature device, but also is not related to the process change, and the circuit speed can be improved; furthermore, a symmetrical structure layout is adopted, so that the layout is quick and easy; and designers can draw alternatively without the technology change.
Owner:SUZHOU PIXCIR MICROELECTRONICS
Waxdip based walnut freshness retaining method and complete equipment
PendingCN108770927AGuaranteed freshnessSolve the preservation problemSeed preservation by coatingClimate change adaptationWaxEngineering
The invention relates to a waxdip based walnut freshness retaining method. The waxdip based walnut freshness retaining method includes the following steps of husking mature walnuts after picking, timely rinsing and air-drying the walnut kernels, sterilizing the rinsed and air-dried walnut kernels according to a flame method, controlling the material feeding speed, and rolling the walnut kernels topass through a flame region quickly, wherein the sterilization temperature in the flame region is controlled at 800-900 DEG C, and the sterilization time is 3-6 seconds; after sterilization, allowingthe walnut kernels to enter a wax tank for wax dipping, and performing air cooling. Complete equipment for walnut freshness retaining based on waxdip comprises a walnut husking machine, an aeration tank, a spraying facility, a flame sterilization device and the wax tank. After husking, the newly-picked mature walnuts are fed into the aeration tank to be soaked; the soaked walnut kernels are cleaned through spray by the spraying facility, and then fed into an air-drying device; the air-dried and cooled walnut kernels are fed into the flame sterilization device to be sterilized; an outlet of the flame sterilization device is connected with the wax tank. The waxdip based walnut freshness retaining method has the advantages of environmental protection, no pollution, high speed, easy operation, good sterilization effect, and capability of storing the fresh walnuts for 180 days or more.
Owner:阴超燕
Folding device
InactiveCN100556746CSimple structureImprove convenienceFoldable cyclesPivotal connectionsEngineeringMechanical engineering
Owner:刘君
Variable-rocker surfboard
ActiveUS10494068B2Increase rockerEasy to operateWaterborne vesselsWater sport boardsEngineeringBuoyancy
Owner:WOO BRENTON MAC
Ophthalmologic nursing device and method capable of achieving water circulation
InactiveCN112569107AMovement speed is easy to be uniformReduce volumeBathing devicesEye treatmentWater circulationVolume reduction
The invention relates to the field of ophthalmologic nursing, and in particular, relates to an ophthalmologic nursing device and method capable of achieving water circulation. The ophthalmologic nursing device comprises a horizontal angle adjusting mechanism, a vertical angle adjusting mechanism, a horizontal sliding mechanism, a volume reduction mechanism, a manual extrusion mechanism, a one-waygate, a rubber belt, a transparent eyeshade, an extrusion cylinder, a spray head and a four-way pipe. According to the ophthalmologic nursing device and method capable of achieving water circulation,the horizontal and vertical positions of the spray head are adjusted through the horizontal angle adjusting mechanism, the horizontal sliding mechanism and the vertical angle adjusting mechanism, andthen multi-angle flushing is conducted on inclusions in the upper eye bags or the lower eye bags of the eyes; through inclination of the head of a user, the spray head moves along the horizontal sliding mechanism, so that flushing equipment moves horizontally without assistance of other people, the user operates the device by one person, and inclusions are easy to flush out; and after an arc-shaped cylinder is completely extruded out, and an extrusion circular plate is reset; blinking is conducted through the user, and the inclusions in the lower eye bags do not flow out.
Owner:袁方
Speed measurement device and method based on electromagnetic induction
ActiveCN107037232AEasy speedEasy speed measurementDevices using electric/magnetic meansTime informationElectricity
The invention discloses a speed measurement device and method based on electromagnetic induction. The device comprises a magnetic field unit, an induction unit, and a signal processing unit. The magnetic field unit is installed on a measured object, and an AC voltage signal is generated in the induction unit when the measured object moves nearby the induction unit. The signal processing unit collects the AC voltage signal outputted by the induction unit, carries out the calculation of the integration of the AC voltage signal, obtains a magnetic flux curve, obtains the displacement-time information of the measured object according to zero crossing point time of the magnetic flux curve and the position of the induction unit, and obtains the speed of the measured object. According to the invention, the device enables the displacement information to be converted into an electric signal, achieves the high-speed measurement through the detection of the electric signal, is simple in implementation scheme, is low in construction cost, and achieves the measurement of the displacement and speed in a microsecond.
Owner:HUAZHONG UNIV OF SCI & TECH
Preparation method and application of aluminum-based light high-entropy alloy metal powder cored welding wire
InactiveCN113996966AEasy to getAccuracy is easyWelding/cutting media/materialsSoldering mediaManufacturing technologyHigh entropy alloys
The invention discloses a preparation method and application of an aluminum-based light high-entropy alloy metal powder cored welding wire. The aluminum-based light high-entropy alloy metal powder cored welding wire comprises a metal powder core and a metal sheath wrapping the metal powder core, wherein the metal powder core is alloyed high-entropy alloy powder, the metal sheath is an aluminum-based material, and the metal sheath accounts for 5-90% of the total mass of the metal powder core and the metal sheath. The preparation method comprises the following steps: carrying out cold rolling on an aluminum-based material to 0.1-2 mm, and then slitting the aluminum-based material to 5-15 mm in width; and then placing the metal powder core, grinding balls and a process control agent in a high-energy ball milling tank, and carrying out ball milling for 10-100 h. According to the invention, the aluminum-based light high-entropy alloy metal powder cored welding wire with low density and high performance is obtained by utilizing additive manufacturing technologies such as electric arc fuse, laser fuse and the like; the suitable aluminum-based high-entropy alloy component range is wide, and the precision and speed of part preparation can be controlled according to the thickness of the welding wire; the large light high-entropy alloy component can be prepared in the modes of electric arc additive manufacturing and the like, and size limitation is avoided; and a large component with excellent performance is obtained.
Owner:SHANGHAI LONGSHUO WELDING MATERIAL
Urban rail transit remote sensing image data processing system and method
ActiveCN113361662AImprove robustnessImprove generalization abilityCharacter and pattern recognitionNeural architecturesData processing systemFeature extraction
The invention belongs to the technical field of urban rail transit remote sensing image data processing, in particular to an urban rail transit remote sensing image data processing system and method. The system comprises a remote sensing image feature extraction module, a region recommendation module and an object prediction class semantic segmentation module. According to the system and method, building objectification extraction is realized by fusing a convolutional neural network and a semantic segmentation algorithm, and the problems of low precision, slow speed and the like of remote sensing image building extraction based on deep learning in the prior art are solved.
Owner:全图通位置网络有限公司
An interpolation method with high precision control
ActiveCN108829032BReduce correctionSimplify writingProgramme controlComputer controlData setAlgorithm
Owner:SHENZHEN HCN ELECTRIC APPLIANCE CO LTD
Novel manual stock cutter
InactiveCN102729275ASimple structureReliable transmissionMetal working apparatusAir springEngineering
The invention relates to the manufacturing field of food processing devices, in particular to a novel manual stock cutter, which comprises a pedestal (1), a supporting base (2), a shaft (3), a blade (4), an air spring (5), a bump (6), a rotating table (7), a rotating shaft (8), shift levers (9), and a rocking handle (10). The supporting base (2) is arranged on the upper end of the pedestal (1), the upper end of the supporting base (2) is movably connected with the blade (4), the bump (6) is arranged at the surface of the blade (4), one end of the air spring (5) is connected with the pedestal (1), the other end of the air spring (5) is connected with the shaft (3), two intersecting shift levers (9) are arranged on the surface of the rotating table (7), the rotating shaft (8) passes through the supporting base (2) and is fixedly connected with the shift levers (9), and one end of the rocking handle (10) is connected with the shift levers (9). The manual stock cutter of the invention has simple structure, stable and reliable transmission, easy controlled speed, and even thickness of the slices.
Owner:NANTONG HENGSHUAI ELECTROMECHANICAL EQUIP
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