71 results about "Back tracking" patented technology

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.

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 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 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.

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 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.

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.