53 results about "TRACK FIELD" patented technology

A magnetic write head provides a significant write field and minimal adjacent track erasure, and lends itself to improved manufacturability. The write head includes a pedestal throat height that defines a bottom pole, P1, and that is substantially recessed from the air bearing surface. The write head further includes a top pole, P2, that defines a nose that is closer to the air bearing surface than the pedestal zero throat. This design achieves a relatively high ratio of the off-track to on-track field. As an example, a 1:4 ratio could be achieved to significantly mitigate the erasure problem of the adjacent tracks resulting from magnetic flux saturation.

A branch vessel in a human patient is located or mapped using in vivo tracked field sensors where in one variation the sensor positions can be located by determining the positions of the sensors relative to a plurality of magnetic field sources of known location. This approach is used, for example, in locating the opening in a renal artery and positioning the proximal end of the AAA stent-graft adjacent to the opening. In another example, the sensors are tracked along the inner wall of an aneurysm and the acquired sensor location data processed to map the contour of the aneurysm to size a prostheses for spanning the aneurysm. The portions of the vessel adjacent the aneurysm also can be mapped. In a further embodiment, an in vivo sensor is positioned in a deployed prosthesis to create a reference for a prosthetic member having a sensor to track to during cannulation of the deployed prosthesis with the prosthetic member.

A branch vessel in a human patient is located using in vivo tracked field sensors where in one variation the sensor positions can be located by determining the positions of the sensors relative to a plurality of magnetic field sources of known location. This approach is used, for example, in locating the opening in a renal artery and positioning the proximal end of the AAA stent-graft adjacent to the opening. According to another embodiment, field sensors in combination with signal generators are placed in vivo to locate vasculature aspects. In a further embodiment, an in vivo sensor is positioned in a deployed prosthesis to create a reference for a prosthetic member having a sensor to track to during cannulation of the deployed prosthesis with the prosthetic member.

The invention relates to a low-attitude tracking system of unmanned aircraft on ground movable target and relative method. Wherein, said system comprises carrier system and ground system; the carrier system is formed by camera, table, carrier image sender and carrier data transmitter; the ground system is formed by image receiver, image collector, PC, and ground data transmitter; the tracking method comprises that extracting target via threshold value division, calculating out the position of target gravity center to find its position in track field, and manually interfering the track state. It uses several threshold values, which can be replaced to improve the track stability. The invention has high real-time property and stability.

The invention relates to an adaptive target tracking filtering method, in particular, a multiple fading factor-based adaptive target tracking filtering method and belongs to the target tracking field.The method includes the following steps that: step 1, the state model and measurement model of a moving object are established; step 2, a moving state vector and a state error covariance matrix are initialized, the moving state vector predicted value, measurement vector predicted value, innovation, innovation covariance and the estimated value of the innovation covariance of the target are calculated; step 3, an exponential weight factor and multiple fading factors are calculated; step 4, a state prediction covariance matrix, Kalman gain, a filtering value and filtering covariance are calculated; and step 5, the step 2 to the step 4 are executed repeatedly until target tracking terminates. According to the method, the calculation of the fading factors is simple; filter divergence can be prevented when a system model is unknown or noise statistical information is inaccurate; and target tracking accuracy is improved. The method of the invention can be applied to radar target tracking.

A pitch compensated inductive position encoder includes a scale comprising first and second tracks including periodic patterns having a wavelength W, a detector, and signal processing. The second track pattern may be shifted along the measuring direction by a pattern offset STO relative to the first track pattern. In the detector, first-track and second-track field generating coil portions generate fields in first and second interior areas aligned with the first and second pattern tracks, respectively. First and second sensing coil configurations that are aligned with the first and second tracks, respectively, are offset relative to one another by STO+/−0.5*W along the measuring direction. In various embodiments, the first and second sensing coil configurations may have the same sequence of individual coil polarities if the generated field polarities are different, and may have inverted or opposite sequences if the generated field polarities are the same.

A container loading and unloading automatic pipeline is to transfer the container to the stack field through the aerial conveyor electric car matched by the ring viaduct, the bulkhead bridge and the gantry crane with load and unload at two ends in the track field. Then the container is transfer to the changing platform from the stack field and next to install it to the collecting block. The pipeline has not only decreased the distance between the hanger and the container, decreased the inertia of the container, reached the container allocation in pipeline by the laser to improve the efficiency, save the energy and decrease the pollution but improved the work safety to reach the loading and unloading automatically.

A hybrid-driven ballastless track fatigue life prediction method comprises the following steps: S100, obtaining and judging ballastless track field monitoring data, and if the field monitoring data are sufficient, executing the step S200; if the field monitoring data is insufficient, executing the steps S300-S400; S200, obtaining a track structure fatigue prediction model based on data driving byusing the fatigue life neural network prediction model and taking sufficient field monitoring data as the input of the neural network model and the fatigue life of the ballastless track structure as the output; s300, taking insufficient field monitoring data as a load boundary condition of the finite element analysis model; obtaining a static analysis model of a temperature load effect and a dynamic analysis model of a train dynamic load effect, and performing numerical simulation calculation by utilizing the models to obtain a stress time history curve of each component of the ballastless track under the temperature and train fatigue load effects; and S400, according to the stress time-history curve, utilizing a fatigue damage theory and fatigue analysis software to predict the fatigue life of the ballastless track structure.

A magnetic recording head is disclosed having a main pole, a shield hot seed layer positioned at a first side of the main pole, a first material positioned at both a second side and a third side of the main pole, the first material connected to the main pole, a second material positioned adjacent to the first material on the second side and the third side of the main pole, the second material comprised of a spin torque layer, a third material positioned adjacent to the second material on the second side and the third side of the main pole, a fourth material positioned adjacent to the third material on the second side and the third side of the main pole and a side shield connected on an exterior side of the fourth material.

An electronic position encoder includes a scale comprising first and second pattern tracks including respective signal modulating scale patterns, a detector and a signal processing configuration. The detector includes first-track and second-track field generating coil portions that surround first and second interior areas aligned with the first pattern track and second pattern track, respectively. The first-track and second-track field generating coil portions each include first and second elongated portions extending along the measuring axis direction, connected to end portions extending along a y-axis direction transverse to the measuring axis. The detector includes sensing elements that span across the first and second interior areas along the y-axis direction. A nominal y-axis trace width dimension of the elongated portions is at least 0.1 times a y-axis width of the first and/or second interior areas. In various implementations, a shielded end section may be used to connect the elongated portions.

The invention relates to a bituminous pavement track field evaluation method which comprises the following steps: A, performing field track survey, namely (1) selecting a road section to be evaluated; (2) testing the track depth; and B, calculating and settling the measurement result: (1) drawing a cross-section profile and a top datum line of each lane on the section line according to a ratio of 1:1; (2) determining the track depths D1 and D2 on the drawings, and reading to 1mm, wherein the maximum value serves as the maximum track depth of the section; (3) working out the mean value of the maximum track depth of each measured section to serve as the mean track depth of the evaluated road section; (4) determining the track deformation area of each section by employing a grid method, and determining the track deformation area of the evaluated road section through a formula; and (5) calculating the track repair engineering quantity between certain adjacent sections through the formula Vi+1=(Ai+Ai+1)*Di+1/2, and calculating the repair engineering quantity of the whole road section. The field track diseases can be objectively evaluated and reliable basis is provided for determining the track maintenance and repair engineering quantity.

Data bit inversion tracking in cache memory to reduce data bits written for write operations is disclosed. In one aspect, a cache memory including a cache controller and a cache array is provided. The cache array includes one or more cache entries, each of which includes a cache data field and a bit change track field. The cache controller compares a current cache data word to a new data word to be written and stores a bit track change word representing the difference (i.e., inverted bits) between the current cache data word and the new data word in the bit change track field. By using the bit track change word stored in the bit change track field to determine whether fewer bit writes are required to write data in an inverted or a non-inverted form, power consumption can be reduced for write operations through reduced bit write operations.

The invention discloses a collecting and measuring system for running speed on a ground track field. The system comprises multiple laser range finders installed on the two sides of the ground track field through supports, cameras, a belt box, a data processing module, a three-dimensional generation module, a transfer node module, a calculation module, a display screen and a central processing unit. The cameras are erected on the periphery of the ground track field. A magnetometer, an acceleration sensor, a gyroscope, a laser reflector and a radio frequency transmitter are arranged in the belt box. By means of the collecting and measuring system, real-time and precise measurement of running speed on curve and linear tracks of the ground track field is achieved; by means of multi-aspect data collecting and analogue simulation of the three-dimensional module, the measuring precision is greatly improved, the whole measuring process is more visual, the collecting and measuring system and a collecting and measuring method for running speed on the curve and linear tracks of the ground track field are provided for scientific training of modern sports, and real-time and precise running speed of sportsmen on the curve and linear tracks of the ground track field throughout the process can be obtained conveniently and rapidly.

A system for generating field values of mortgage forms. The system includes a database, a calculation module, a monitoring module. The database contains jurisdictional tax and fee information used to calculate field values for the mortgage form. The calculation module is configured to calculate field values for the mortgage form and to generate a transaction log for mortgage and related transactions. The monitoring module communicates with the database and identifies when changes in the field values of tax and fee information occur in the transaction log, and report those changes to the affected lender.

Wear-resistant weather-proof antiskid sports ground silicone-acrylic coating is disclosed. The coating comprises following raw materials: silicone acrylic emulsion, elastic rubber powder, a thickening agent, a crystal whisker filling material, a nanometer filling material, a dispersing agent, a defoaming agent, a levelling agent, an antioxidant, a UV auxiliary agent, a coupling agent, color paste, a pH modifier, a film coalescing aid and water; or comprises following raw materials: silicone acrylic emulsion, a thickening agent, a filling material having a size of 6100-200 meshes, a nanometer filling material, a dispersing agent, a defoaming agent, a levelling agent, an antioxidant, a UV auxiliary agent, a coupling agent, color paste, a pH modifier, a film coalescing aid and water. The coating has comprehensive properties, such as a good antiskid property, good wear resistance and a good weather-proof property, and can be used for basketball courts, football fields, ground track fields, and other sports grounds.

The invention discloses a 400m standard ground track field lane line side-stepping detector belonging to the field of sports instruments. An electromagnetic sensor and an electromagnetic distance meter are connected with a multifunctional electronic counter in series through conducting wires to form a closed circuit; a starting end and a terminal end are respectively connected to the outer edge of a lane line and the integrated circuit chip of a programmable control fieldbus through the conducting wires; the outer edge of the lane line, the inner edges of the integrated circuit chip of the programmable control fieldbus and the lane line and the circumstance from the middle to the edge of a pressure sensor are all filled with magnetic powder; a magnetic powder clutch and the inner edge of the lane line are connected with the pressure sensor through the conducting wires which are connected in series to form the closed circuit; the starting end and the terminal end of the closed circuit are respectively connected to the outer edge of the lane line and the integrated circuit chip of the programmable control fieldbus; an electrified conducting wire is fixed above the middle of the magnetic powder; and the starting end and the terminal end of the electrified conducting wire are connected to the outer edge of the lane line and the integrated circuit chip of the programmable control fieldbus.

FIELD OF THE INVENTION that present invention relate to the field of automated machinery, in particular to a rail automatic demolition vehicle, includes a chassis traveling between the tracks and a resilient lifting device mounted on the chassis, clamping device, the elastic lifting device comprises a vertical movable plate horizontally mounted on the chassis and a power device for driving the vertical movable plate to perform vertical reciprocating motion, A lif column is vertically mounted on that upper end of the chassis, A vertical movable plate is fixedly installed on the lifting column,A power unit is fixedly mounted on a vertical movable plate, the clamping device comprises a horizontal moving device, A vertical moving device and jaws, the horizontal moving device is horizontally mounted on both sides of the vertical movable plate, A vertical moving device is vertically downwardly mounted below both ends of the horizontal moving device, The clamping jaws are vertically downwardmounted on the working end of the vertical moving device, and the clamping jaws are riding directly above the rails on both sides and hook the rails respectively. The rail automatic demolition vehicle can automatically remove the rails and automatically stop working when the rails are deviated from the rails or reach the end of the rails.

The invention discloses a novel fully prefabricated track structure used for a tunnel in a railway track field. The structure comprises track slabs, an elastic modulus cushioning layer, prefabricatedassembly blocks and an adjusting layer which are laid from top to bottom, steel rails are laid on the track slabs, the adjusting layer is laid on a shield segment, the prefabricated assembly blocks are laid between the adjusting layer and the track slabs and laid along the steel rails, the bottom surfaces of the track slabs are supported and laid on the prefabricated assembly blocks, and high-strength concrete templates are fixed with the bottoms of the inner side wall surfaces of the prefabricated assembly blocks; the elastic modulus cushioning layer is arranged between the bottom surfaces ofthe track slabs and the top surfaces of the prefabricated assembly blocks, and rigid connecting protection of the track slabs is achieved and force transmission channels are formed through the elastic modulus cushioning layer. According to the structure, factory prefabrication can be achieved, the assembly and dismantling of the structure are convenient, the manufacturing is efficient, the prefabrication precision is higher, the construction process is greatly improved, the construction adjustment is convenient, the arrangement condition of ditches is excellent, and the maintaining, repairingand spare part replacing in an operation period are convenient.

The invention discloses a pre-compensation method measuring and positioning technology for a steel pile trolley track. The technology is characterized by comprising trolley track tolerance decomposition, steel pile trolley track segmented manufacturing and steel pile trolley track field machining, wherein the steel pile trolley track segmented manufacturing comprises the steps of allowance addingand node form arrangement, manufacturing of a segment of an upper track of a side guide track, manufacturing of segments of a lower track of the side guide track, and manufacturing of segments of walking tracks; and the steel pile trolley track field machining comprises track machining condition preparation and machining preparation. The pre-compensation method measuring and positioning technologyfor the steel pile trolley track has the advantages that the structural strength and the positioning precision of key parts are ensured at the expense of a micro reduction of the weight of a ship body, thus a series of problems such as insufficient machining amount, insufficient strength and insufficient machining precision caused by field structure manufacturing deviation in the later period aresolved, and the technology has outstanding advantages technically.

The invention provides a barrier-free power supply line erection system for a track field. The barrier-free power supply line erection system comprises a plurality of telegraph poles, wherein the telegraph poles are uniformly erected at two sides of the track field and two telegraph poles are taken as a group; one aerial cable is erected between two telegraph poles in each group and is vertical to tracks of the track field; a plurality of suspension lines are suspended below each aerial cable; a power supply line is suspended at the lower ends of each column of suspension lines; and trends of the power supply lines are parallel to the tracks of the track field. According to the power supply line erection system provided by the invention, the telegraph poles do not need to be erected in the middle of the track field and are replaced with the plurality of aerial cables, and the power supply lines are suspended below the aerial cables, so that the power supply requirements of agricultural machinery can be met and operation of the agricultural machinery is not affected.

The invention discloses a method for analyzing transient characteristics of a metal medium target by a body-surface division shooting and bouncing ray method. The method includes the following concrete steps: establishing a geometric model of a metal medium mixed target, carrying out body division on a medium body by using a tetrahedron unit, and carrying out surface division on a metal surface by using a triangular unit to fit a geometric shape of the target; subdividing the surface triangular unit of an illuminated area in order to achieve ideal precision of the shooting and bouncing ray method; simulating propagation of electromagnetic waves in the medium body and on the metal surface by using a ray tube to track field strength and a path of rays; and when the rays leave the target, calculating transient scattering fields of all the rays and accumulating the transient scattering fields to obtain a total transient scattering signal. The shooting and bouncing ray method of body-surface division used by the invention can be used for calculating the transient scattering signal of the large-size metal medium mixed target of a sub-millimeter wave band, which avoids the problem of large unknown quantity of the sub-millimeter wave band, requires less time and can obtain a broadband RCS by one calculation.

A windproof pesticide spray vehicle for a track field includes a front vehicle body and a rear vehicle body. The two sides of the front vehicle body are each provided with a horizontal operation arm which can stretch out and draw back, the two-thirds portion of each horizontal operation arm is hung with a steel wire rope, the lower portions of the horizontal operation arms are provided with pesticide spray hoses through orientation wheel disks in a hanging mode, the pesticide spray hoses are provided with nozzles, and the first ends of the pesticide spray hoses wind around hose winding disks; the rear vehicle body is provided with a liquid pesticide tank and a water pump, the water pump is connected with a main hose, the main hose is divided into two paths of branch hoses, and the branch hoses are connected with the hose winding disks. When the windproof pesticide spray vehicle for a track field is not in use, the horizontal operation arms draw back, and the pesticide spray hoses wind around the hose winding disks; when pesticide needs to be sprayed, the horizontal operation arms stretch out, the hose winding disks rotate, so that the pesticide spray hoses are pulled out with stretching-out of the horizontal operation arms, the water pump is switched on, and the pesticide is sprayed. The windproof pesticide spray vehicle makes use of the characteristics of the track field, the mechanization of pesticide spraying can be improved, the pesticide spraying speed is improved, since the horizontal operation arms can be very close to crops and spray pesticide to the crops, the influence of wind on sprayed liquid pesticide can be reduced, and the pesticide spraying effect is improved.

The invention discloses a waterlogging seepage drainage water pipe which comprises a water seepage pipeline; a water seepage hole is formed in the water seepage pipeline; and a filter pipe, a filter matter, an outer filter pipe and a filter net are sequentially arranged outside the water seepage pipeline from outside to inside. The waterlogging seepage drainage water pipe is pre-buried in a plough layer below a track of a track field without occupying an arable land and influencing growth and management of crops; and surficial hydrops seep into the waterlogging seepage drainage water pipe and is drained by flowing into a total drainage pipe through a drainage culvert pipe pre-buried in a natural layer, so that a soil structure of the plough layer is not damaged, and soil and fertilizer losses are prevented.