71 results about "Back tracking" patented technology

In the case where a tracking process of a moving tissue performing a contraction movement and an expansion movement and represented by a cardiac wall is performed for one heartbeat from the ED1 to the ED2, a contour position (tracking point) initially set at the ES (End-Systole) is tracked until ED1 in accordance with movement information, the tracking point is rearranged and a position of a middle layer is set at the ED (End-Diastole), the rearranged tracking point including the position of the middle layer is tracked in accordance with the movement information already obtained, and then the tracking point is further tracked in the normal direction until the ED2. Alternatively, an initial reverse tracking process is performed from the ES to the ED1 by using plural middle layer path candidates, and a path passing through the tracking point existing on the middle layer or contours of inner and outer layers and rearranged at the ED1 is searched, thereby accurately creating and evaluating movement information of each of an endocardium and an epicardium of a cardiac wall.

A tube clamp apparatus and a tube connecting apparatus having high durability and improved operability when an operator locks these apparatuses are provided. A tube connecting apparatus comprises a first clamp and a second clamp, each pressing to hold two flexible tubes 8, 9. The tubes are placed at a lower jaw portion of the second clamp and pressed to a flat state by pressing force applied thereto a direction of an arrow A. A hook section 310 having hook portions divided into plural pieces is set up at an upper jaw portion of the second clamp, and the hook portion B 312 is made of a POM elastic member having, on one side thereof, a protruded portion 314 protruded from other adjacent hook portions. When pressing force is applied to the upper jaw portion, the hook portion B 312 protruded from the other adjacent hook portions is elastically deformed and engaged with a POM-made roller B 317 to prevent back-tracking of the hook section 310.

The invention discloses a Bohai sea spilled-oil transporting and extension value forecasting system.The system can conduct forecasting on a transporting trajectory of an oil film, an extended range, the oil film thickness, the oil-passing-through area, the time for spilled-oil for reaching a shore or a sensitive area and the like after oil spilling occurs on a point source and a continuous source in Bohai sea area, and a forecasting result can be displayed on a computer screen visually and dynamically.Oil spill emergency action modes, types and number of vessels and situations of laying oil fences or using oil dispersant or the like are selected according to the forecasting result, oil spill damage is relieved or eliminated, and disaster prevention and reduction are achieved.Back tracking is conducted on the source of spilled oil in the Bohai sea area by combining with finger prints and satellite remote sensing, the source of the spilled oil on the sea is found out, and therefore a troublemaker is determined.

The invention relates to the technical field of pipeline cleaning and discloses a robot used for cleaning the inner wall of a robot. The robot comprises a body and a machine head. The body comprises amachine body, two lifting frames, two caterpillar type driving bottom discs and four electric telescopic rods. A cleaning water tank, a water pump and a stepping motor are arranged in the machine body. The input end of the cleaning water tank penetrates and extends to the outer side of the machine body, and the output end of the cleaning water tank communicates with the input end of the water pump. The body further comprises a first flexible connecting pipe communicating with the output end of the water pump. By means of the robot used for cleaning the inner wall of the pipeline, cleaning liquid is sprayed to the inner wall of a pipeline through a cleaning liquid spraying plate, a cleaning brush is used for conducting primary cleaning and evenly smearing the cleaning liquid to the inner wall of the pipeline, during back tracking, under the common effect of a rough grinding plate and the cleaning brush, green algae, dirt and fungi in the pipeline are removed, and the cleaning effect isensured.

The embodiment of the invention discloses a method and device for protecting software security. The method comprises the following steps: compiling an input source file to generate an intermediate file; preprocessing the intermediate file to acquire the program information of the intermediate file, and generating a confusion policy; carrying out confusion processing on the intermediate file according to the confusion policy; and when the result of the confusion processing reaches the preset confusion evaluation index, carrying out connection processing on the intermediate file after confusion processing, and outputting an object file after connection processing. The embodiment of the invention carries out back tracking by a code confusion technology and confuses actual information by a large amount of useless information to increase the tracking workload and complexity of a tracker, thereby achieving the purpose that the code principle of the software to be protected can not be analyzed so that the security of the software is improved.

The invention discloses a method for balancing load based on virtual cell breathing in a long term evolution-advanced (LTE-A) system. The method comprises the following steps of: periodically detecting load in the cell by an eNode B in the LTE / LTE-A system; and when the load exceeds a threshold value, balancing load by a method that power is sent by a virtual dynamic adjustment cell, calculating switching parameters finally by a back tracking method, and dynamically adjusting the switching parameters of the system to fulfill the aims of dynamically adjusting the number of mobile users in the cell. By the provided method for balancing the load based on the virtual cell breathing in the LTE-A system, the load range of the cell is virtually and dynamically adjusted, the cell virtual breathing is realized, and the phenomenon that the new load is not balanced is inhibited by virtually reducing a coverage range of an overloading cell and increasing a coverage range of an underload cell, so that the load is balanced finally, and system capacity is improved; and meanwhile, the adjustment value of the switching parameters is calculated further, and the complexity of the method for balancing the load is reduced.

Approaches for deriving scatter information using inverse tracking of scattered X-rays is disclosed. In certain embodiments scattered rays are tracked from respective locations on a detector to a source of the X-ray radiation, as opposed to tracking schemes that proceed from the source to the detector. In one such approach, the inverse tracking is implemented using a density integrated volume that reduces the integration steps performed.

The invention discloses a pressure control system and a pressure control method for a pneumatic press. The pressure control system comprises a position sensor, a pressure sensor, a programmable logic controller (PLC), an electromagnetic valve and a human-computer interface, wherein the position sensor is used for measuring the position information of a cylinder driving part and transmitting the information to the PLC; the pressure sensor is used for detecting the internal pressure information of a pressure welding body and transmitting the information to the PLC; the PLC is used for processing the information from the position sensor and the pressure sensor, communicating with the human-computer interface and outputting control instruction to the electromagnetic valve; the electromagnetic valve is used for executing the control instruction of the PLC to adjust the working parameter of the cylinder in the pneumatic press; and the human-computer interface is used for setting the working data of the pneumatic press and monitoring the pressure of the pressure welding body in real time, and inputting the preset data information to the PLC for storage. By adopting the pressure control system and the pressure control method, the pressure of the pressure welding body can be accurately controlled and maintained by the cylinder, so that the phenomenon of back tracking caused by overpressure or insufficient pressure is avoided.

The invention discloses a high-efficiency trundle assembling machine. The machine comprises a trundle body conveying mechanism, a rotating fixing frame conveying mechanism, a rivet shaft conveying mechanism, a riveting mechanism, a reversing mechanism, a tool conveying belt, a finished product back tracking conveying belt, bases and a rack; according to the technical scheme, the tool conveying belt and the finished product back tracking conveying belt are used for conveying, wheel bodies, rotating fixing frames and rivet shafts are sequentially arranged at the positions, on the tool conveyingbelt, of the bases, the rivet shafts are riveted through the riveting mechanism, the rotating fixing frames are rotatably connected to the wheel bodies, through the reversing mechanism, the assembledtrundle bases are pushed to the finished product back tracking conveying belt from the tool conveying belt, the finished product back tracking conveying belt conveys the trundle bases to the startingend of the tool conveying belt, assembled trundles are taken down from the bases to be stored, and trundle assembling is finished; the process is repeated, and the trundle assembling efficiency is improved.

The invention provides a DHCP (Dynamic Host Configuration Protocol) address allocation method, equipment and a system. The method comprises the following steps: receiving a first request message sentby a DHCP client to a DHCP server for requesting to allocate an IP address by first distributed gateway equipment, and generating a second request message according to the first request message, wherein the second request message carries first sub option information, the first sub option information comprises a first Back tracking IP address, and the first Back tracking IP address is an interfaceIP address used by the first distributed gateway equipment to communicate with the DHCP server; transmitting the second request message to the DHCP server by the first distributed gateway equipment, and receiving a response message from the DHCP server, wherein the response message carries second sub option information, and the second sub option information comprises a second Back tracking IP address; and forwarding the response message by the first distributed gateway equipment according to the second Back tracking IP address. Therefore, in network architecture of a distributed gateway, the correct allocation of IP addresses can also be ensured without the need for the DHCP server to support the corresponding functions.

A wireless water ski handle system used with a personal water ski towing watercraft that includes a handle component that selectively attaches to a standard water ski handle and contains a manual control module and a wireless transmitter. The control module includes directional control buttons, power ON and OFF buttons, and power Up and Down buttons. Located in the watercraft is a wireless receiver that communicates with the transmitter. Coupled to the receiver is a self-correcting propulsion and steering system that senses undesirable changes to the watercraft's motion caused by the water-skier when pulled by the watercraft. When a difference is detected, a command module located in the watercraft automatically controls the watercraft's propulsion and steering systems so the watercraft follows the desired path and velocity. The system also includes an auto-back tracking feature that automatically reduces power to the last known marked geographic point the skier was upright.

The invention discloses a post-fracture flow-back tracking detecting method for a horizontal well. The post-fracture flow-back tracking detecting method comprises the following steps: step 1, preparing a tracking fracturing fluid; step 2, carrying out fracturing and flow-back test on the tracking fracturing fluid in a straight well, recording fracturing construction parameters and flow-back parameters, and sampling a tracking flow-back liquid according to certain time interval, separately detecting tacking concentration, acquired in different time periods, in each sample, and obtaining datum data that tracking concentration changes along with time in the tracking flow-back liquid; and step 3, adopting the tracking fracturing liquid with the same tracking concentration in the step 2 to carry out fracturing construction on the horizontal well, recording the construction parameters and the flow-back parameters and sampling the tracking flow-back liquid according to certain interval time; respectively detecting tracking concentration, acquired in different time periods, in each sample, and calculating to obtain practical flow-back amount of the tracking fracturing liquid in an existing time period of the detected sample; and calculating to obtain a flow-back rate, reversed out by the horizontal well in the existing time period, at a tracing stage of the detected sample.

The invention discloses a long-service-life efficient safe type chain belt tray type conveyor which comprises a driving device, a left driving chain wheel, a right driving chain wheel, a left driven wheel, a right driven wheel, a left double-row chain belt, a right double-row chain belt, a duckbilled U-shaped tray, a left guide wheel, a right guide wheel, a roller, a chain belt off-track preventing device and a conveyor frame. The driving chain wheels are driven by the driving device and connected with the transmission driven wheels through the chain belts, the left and right guide wheels are arranged at junctions of horizontal sections and inclined sections of go tracking and back tracking of the chain belts respectively, the duckbilled U-shaped tray is mounted on the chain belts, the roller is mounted on a roller base of the conveyor frame, and the chain belt off-track preventing device is mounted on the roller base and the conveyor frame. By the conveyor, using effect and safety performance of conveying systems of iron ore, minerals or blocky materials are evidently improved, the service life is prolonged, and safety accidents caused by chain belt breaking of chain belt tray type conveyors are prevented. The long-service-life efficient safe type chain belt tray type conveyor is safe and reliable in operating and high in production capacity with production efficiency reaching 300-500 tons per hour and 4000-10000 tons per day.

Embodiments herein present a method for a back-tracking decision tree classifier for a large reference data set. The method analyzes first data files having a higher usage than second data files and identifies file attribute sets that are common in the first data files. Next, the method associates associated qualifiers with each of the file attribute sets, wherein each of the associated qualifiers represents a corresponding first data file. The associated qualifiers are then counted to determine the number of associated qualifiers that are associated with each of the file attribute sets. Subsequently, the file attribute sets are sorted in descending order based on the number of associated qualifiers. The counting and sorting are initially performed on file attribute sets that only have a single file attribute.

The invention relates to a double-crank driving double-point servo press which comprises a machine body, a sliding block and two sets of independent driving systems formed by a double-crank mechanism. The two sets of double-crank driving systems are arranged in a beam on the machine body symmetrically, and an output connecting rod of the driving system is hinged to a guiding column on the sliding block. The double-crank mechanism comprises a big gear wheel, a pin shaft, a small connecting rod, an output rod and an eccentric base. The pin shaft is fixedly arranged on an edge of the big gear wheel, one end of the small connecting rod is hinged to the pin shaft, the other end of the small connecting rod is hinged to the output rod, one end of the output rod is hinged to the small connecting rod, the other end of the output rod is fixedly connected with crank shaft supported on the eccentric base movably, and a four bar mechanism is formed by arm length between a pin shaft center and a rotation center of the big gear wheel, the small connecting rod, the output rod and an eccentric distance between the rotation center of the output rod and the rotation center of the big gear wheel. By means of the double-crank driving double-point servo press, the sliding block of the press can obtain the characteristics of large down stroke corners and small back tracking corners, and good forming curves and a remarkable reinforcement effect near a bottom dead center of the sliding block are obtained.

The invention discloses a full-automatic movable water-saving photovoltaic module cleaning device and a cleaning method thereof. The full-automatic movable water-saving photovoltaic module cleaning device comprises a water-taking assembly, a coil pipe cart and a cleaning mechanism. The water-taking assembly and the coil pipe cart are arranged on one side of a water-taking main pipe and device track, and an auxiliary track is arranged on the other side of the water-taking main pipe and device track. A portal frame is arranged above the coil pipe cart, the water-taking main pipe and device track, a photovoltaic module and the auxiliary track. According to program setting, after the cleaning device is started, the cleaning device moves in the set direction (positive stroke); after the cleaning device reaches a first set point, the automatic water-taking assembly performs motion to take water, the coil pipe cart and the water-taking assembly are separated to move in the back tracking direction and a hose is placed synchronously, a water spray head on the cleaning mechanism performs water spraying cleaning, ad two rows of cleaning motors perform rotating sweeping in the positive and reverse directions. According to the full-automatic movable water-saving photovoltaic module cleaning device, a long-distance movable type, dry and wet concurrency type and flexible and selectable cleaning mode is achieved, and the full-automatic movable water-saving photovoltaic module cleaning device has the advantages of being low in cost, large in range, high in frequency and low in water quantity and needing no manual intervention.

The invention discloses an allocation method and an allocation device for an out-of-service vehicle. The method comprises the following steps of: judging whether the delivery destination information of a delivery vehicle is in a mapping relationship table of a delivery warehouse of a back-tracking order or not; judging whether the delivery destination information of the back-tracking order is in a mapping relationship table of a delivery warehouse of a starting order or not; obtaining a loaded vehicle running rate parameter according to starting haul distance information, back-tracking haul distance information, back-tracking goods pickup deadhead haul distance information and delivery completion deadhead haul distance information; and comparing the loaded vehicle running rate parameter with a loaded vehicle running rate minimum, and if the loaded vehicle running rate parameter is more than or equal to the loaded vehicle running rate minimum, allocating the out-of-service vehicle to finish a transportation task in the back-tracking order. According to the allocation method and the allocation device for the out-of-service vehicle, the matching efficiency of the out-of-service vehicle in a logistics transportation process is improved, out-of-service vehicle resources can be accurately and efficiently allocated to users of transportation vehicles, environmental pollution is reduced, and resources are saved.

A rapid keyword detection method based on quantile self-adaption cutting relates to a rapid detection method of the keyword in a continuous speech. By using the self-adaption cutting method in a keyword detection system decoding process, a local path can not be cut maximumly so that a system efficiency is low. By using the method of the invention, the above problem can be solved. The method is characterized by: extracting a detection voice characteristic so as to obtain a characteristic vector sequence; according to Viterbi decoding, calculating a probability of generating the characteristic vector by a movable model state on the local path and accumulating so as to obtain a local path probability score; then carrying out state-layer local path cutting based on the quantile; and then determining whether a speech end is arrived; if the speech end is arrived, back tracking and researching the keyword according to a grid generated during a decoding process, and confirming a keyword candidate based on a posterior probability so as to obtain an identification result; otherwise, decoding again. The method can be well embedded into an original keyword detection system. In every moment ofthe decoding process, the impossible path can be effectively cut off. A search space scale can be reduced maximally and a system detection efficiency can be increased.

The invention discloses a tracking method and device of a dynamic target and a storage medium. The method comprises the steps: acquiring a first frame image from a loaded video, and determining a coordinate position of a target box; selecting a plurality of discrete points from the target box of the first frame image, wherein coordinate positions of the discrete points are first positions, and back-tracking positions of the discrete points in the first frame image as second positions; if distances between the first positions and the second positions are less than a preset value, acquiring a coordinate position of the target box in a second frame image through an optical flow method according to the target box of the first frame image. Compared with the prior art, the tracking method and device of the dynamic target and the storage medium have the advantages that the coordinate position of the target box in the second frame image is determined according to the distances between the first positions and the second positions so as to judge whether tracking is successful so that target tracking accuracy can be effectively improved; Kalman filter prediction helps effectively improve anti-occluding capacity and prevent drifting of a target.

The invention relates to a method and a device for recording action and visit duration of a field operation worker. The method comprises the following steps of step 1, receiving client information forwarded by a center platform to a static data storing module, and meanwhile, collecting track GPS (Global Positioning System) data of a visitor; step 2, if the client information is positioned, performing step 3, and if the client information is not positioned, performing step 6; step 3, inputting visit information; step 4, acquiring the client information and the GPS data of the visitor, calculating visit data, and outputting the visit data; step 5, reporting the visit data, and storing the visit data in the center platform; step 6, selecting client positioning point information on a mobile phone map, storing the client positioning point information in the static data storing module, and returning to the step 3. The device comprises a dynamic data cache module, the static data storing module, a visit back tracking module, a dynamic data analyzing module, a visit data storing module and a map positioning module. The action and visit duration of the field operation worker can be effectively recorded, and time faking is avoided.

A video decoder in which the video source clock is generated entirely in the digital domain is disclosed herein. By creating a virtual version of the source clock in a numeric oscillator, the amount of noise in the system is substantially reduced. Furthermore, by transferring the digitized video signal, sampled with an asynchronous crystal clock, into the source clock domain, the accuracy of the brightness (amplitude) and color (phase) information can be greatly enhanced.

A tube clamp apparatus and a tube connecting apparatus having high durability and improved operability when an operator locks these apparatuses are provided. A tube connecting apparatus comprises a first clamp and a second clamp, each pressing to hold two flexible tubes 8, 9. The tubes are placed at a lower jaw portion of the second clamp and pressed to a flat state by pressing force applied thereto a direction of an arrow F. A hook section 310 having hook portions divided into plural pieces is set up at an upper jaw portion of the second clamp, and the hook portion B 312 is made of a POM elastic member having, on one side thereof, a protruded portion 314 protruded from other adjacent hook portions. When pressing force is applied to the upper jaw portion, the hook portion B 312 protruded from the other adjacent hook portions is elastically deformed and engaged with a POM-made roller B 317 to prevent back-tracking of the hook section 310.

The invention relates to a belt conveying type moving sidewalk which comprises a chain plate and a driving mechanism. The chain plate comprises a plurality of wheels capable of rolling along a front tracking guide rail and a back tracking guide rail located on the two sides of the sidewalk, wheel seats used for connecting the wheels on the two sides in a one-to-one correspondence manner, connecting parts used for connecting the two ends of every two adjacent wheel seats into a ring shape, and conveying belts arranged on the wheel seats and located between the wheels on the two sides. The conveying belts comprise treading faces located on the outer layers and used for people to walk, and the treading faces are made of rubber or polyurethane. According to the belt conveying type moving sidewalk, due to the fact that the surfaces of the belts are made of rubber or polyurethane, friction coefficients between materials are greatly increased, antiskid coefficients are increased, and a security effect is achieved; and meanwhile the structure of the chain plate is simple, the bearing capacity is large, and operation is more stable.

The invention relates to the subway dispatching management technical field, and specifically relates to a subway running dispatching management system and a dispatching management method thereof; the management system comprises the following elements: a station sorting module used for dividing all intermediate stations into first type stations and second type stations; a train cascade module used for connecting first and second trains in series; a driving control module used for controlling cascaded two trains to start from the station; a stop management module used for determining to be arrived station types, if the first type is determined, the first train aims as a platform to stop and opens doors, the second train will not open the doors, and passengers are reminded to get off the train on the second type station and transfer to a back tracking train; if the second station type is determined, the second train is controlled to aim at the platform and stop, and to open the doors, while the first train will not open the doors, and passengers are reminded to get off the train on the first type station and transfer to a back tracking train. The system and method can greatly improve subway capacity, thus effectively solving transportation problems in rush hours.

The invention relates to a steam catapult which is important equipment for the taking off of the carrier aircraft of naval air force from the deck of the carrier. The one-way steam catapult with linear opening cylinder does not adopt the prior U-type-filling sealing technology, but a linear sealing technology with the combination of a composite steel rope and a counter cylinder to dynamically seal an opening steam main cylinder, which removes the defects of short sealing life and large maintenance of the U-type-filling sealing technology. Also, the steam catapult adopts back tracking motor-driven drag technology to realize the one way steam action of the catapult, thereby resolving the detects of large steam consumption of the U-type-filling sealing catapult and saving the valuable fresh water.

A method and device which may present more user-friendly navigation information. A user may be on a trip to a destination, following a route calculated by a navigation device. When the user stops and searches for a place he is interested in with the navigation device, the destination, the route and the user's moving direction may be considered when presenting a list of search results. The navigation device may search a database to obtain search results matching the user's searching criteria. For each search result, the navigation device may determine a branch route connecting the search result and the current geographic location. Search results requiring considerable back-tracking may be ignored, and the remaining search results may be presented to the user.

The invention discloses a robot path planning method and device, which relate to the field of computer information processing. The method comprises steps: a start point and an end point of a to-be-processed task of the robot are acquired; a robot map is initialized, wherein the robot map comprises a no load map and a full load map; the shortest path between the start point and the end point is acquired through the robot map and a shortest path algorithm; and an advancing route of the robot processing the task is determined through a back tracking algorithm. According to the robot path planningmethod and the device disclosed in the invention, the walking path of the handling robot can be directly calculated in simulation, the frequency of interactions with a database is reduced, and the simulation operation speed is improved.