604results about How to "Accurate guidance" patented technology

A system and method for knee arthroplasty procedures, using a novel leg rotation fixture to enable the leg mechanical axis, the tibia and the femur to be mutually disposed such that the load bearing, mechanical axis of the leg runs through the center of the knee joint. A measurement gauge is provided for mounting on the tibia and for aligning a baseplate in a known position on the tibia. This baseplate supports an X-ray target plate in a known position relative to the tibia, used in determining the mechanical axis, and an optional surgical robot, used to perform tibial and femoral cuts. The position of the femur relative to the robot may be determined from X-ray imaging of the pelvic region after attachment to the baseplate of an additional target extending to the pelvic region. The system enables improvement in the accuracy of knee arthroplasty procedures.

A device is proposed which is used to detachably connect a wiper blade (12) to clean windows, particularly of motor vehicles, to a driven wiper arm (10) featuring a wiper blade holder (50 or 150), whereby the wiper blade (12) that can be placed on the window (20) with a long-stretched-out, rubber elastic wiper strip (18) features a band-like, long-stretched-out elastic supporting element (16) that is curved in the longitudinal direction over its band surfaces (15, 17) on whose lower, concave band surface (17) the wiper strip (18) is arranged parallel to the longitudinal axis. On the outer convex band surface (15) of the supporting element (16) sits a connecting element (26), which features two parallel wall surfaces (36) that are aligned in a vertical plane on the band surface and extend in the longitudinal direction of the wiper blade and that a pivot pin (42) projects from each wall surface, whereby the longitudinal axes of the two pivot pins are aligned with one another. An especially simple embodiment of the articulated connection with an integrated connecting device is achieved if an adapter (66 or 166) that can move in a pendulum fashion is positioned on the two pivot pins of the connecting element (26), and said adapter features means to connect to the wiper blade holder (50 or 150) of the wiper arm (10).

A hand-held power tool (2) connectable with a dust suction module (32) includes a motor (64) and an air flow generator (66) which for cooling the motor (64) is located, together with the motor (64), in air flow path (62) between an air inlet and an air outlet (16) both formed in the tool housing, (4, 6), with an air inlet having a side opening (18) and a connection opening (20) connectable with the suction path (60) of the dust suction module (32) and the dust suction module (32) having a suction conduit (58) for connecting the suction path (60) with the air flow path (62) and adjoining the connection opening (20) in a connected condition of the dust suction module (32) with the power tool, and with the power tool (2) further having a closing member provided on the connection opening (20), operable by the dust suction module (32), and having, in an attached position of the dust section module (32), an open position, and having a closed position in the detached condition of the dust suction module (32).

The invention discloses a simulating method of the forming process of an unconventional oil and gas reservoir hydraulic fracturing complex fracture net. The method includes the steps of a, reestablishing natural fracture distribution, estimating the properties of natural fractures, obtaining rock mechanical information and stratum stress information of a stratum from log data or a geological model, and obtaining a data file related to the well factory construction process; b, inputting the obtained parameters in an established natural fractured reservoir fracturing model coupling a well cylinder, fractures and the stratum; c, conducting numerical value solving on the model to obtain after-fracturing information such as fracture forms, opening degree distribution and pressure intensity distribution; d, analyzing the fracturing effect through a model calculating result, and making a preparation for numerical value simulation of the later-period production process. The fractured reservoirfracturing numerical value simulating method coupling the well cylinder flowing, the fracture deformation expanding, the multi-state natural fractures and the flowing of fluid in the fractures can quantitatively analyze the form of the unconventional reservoir segmented volume fracture net and is an effectively means for evaluating and optimizing the fracturing scheme.

A tibia cutting block for performing precise cuts into a tibia comprises an approximately cuboid body with a tibia attachment side and opposing thereto a front side. The body has a cutting guide slot extending from a top side into the body, a blade holding slot extending from a right side or a left side into the body, a first anchoring pin hole which is close to the intersection of a first plane defined by the blade holding slot and a second plane defined by the a cutting guide slot, a second anchoring pin hole distant from the first anchoring pin hole and a reference pin guide. All are penetrating the body from the front side to the tibia attachment side.

A parking lot attendant robot is provided with a camera for capturing an image of an vehicle and a parking space, and a receiver from receiving vehicle information such as the steering angle, shift position and vehicle speed from the vehicle. Based on the knowledge of the position of the vehicle with respect to the parking space gained from the camera and the vehicle information received from the vehicle, the robot computes the optimum parking path which the vehicle should follow. The robot signals the motorist by a visual and/or auditory display and/or a hand signal as to how the steering wheel should be turned and which way the vehicle should move or stop for the vehicle to follow this parking path and to be successfully parked in the prescribed parking space.

Host vehicle location information that indicates the location of a host vehicle is acquired, image information that includes the road along which the host vehicle is traveling is acquired, a host vehicle travel lane in which the host vehicle is traveling is detected based on the image information, lane information that indicates the position of the host vehicle travel lane is generated based on the host vehicle location information, and this lane information is registered on a storage medium.

The present invention relates to a method of guiding a user of a portable electronic device when operating a fingerprint sensor comprised with the portable electronic device. The invention allows for an improved enrollment process as well as for general improvements when using the fingerprint sensor. The invention also relates to a corresponding electronic device and to a computer program product.

The invention discloses a wireless remote PLC (Programmable Logic Controller) monitoring system comprising a host server, remote monitoring client sides, a ZigBee coordinator node, ZigBee router nodes, PLC control nodes and PLCs. The PLC control nodes are in connection and communication with the PLCs, and the host server is in communication with the remote monitoring client sides and the ZigBee coordinator node; control information of the remote monitoring client sides is transmitted to the PLC control nodes by virtue of the ZigBee coordinator node, and the remote monitoring client sides are used for receiving operation state information of the PLCs and workshop equipment, which is transmitted by virtue of the PLC control nodes; and the ZigBee coordinator node is used for controlling ZigBee wireless sensor networks, the PLC control nodes are in connection and communication with the ZigBee router nodes, and the control information or the operation state information is transmitted between the PLC control nodes and the ZigBee coordinator node by virtue of the ZigBee router nodes. The invention also discloses a method for acquiring the PLC operation information and controlling the PLCs by virtue of the monitoring system. The wireless remote PLC monitoring system can be used for flexibly controlling the PLCs and timely acquiring the control and operation state information of the PLCs and controlled targets on the basis of a wireless sensor network technology, and is simple to operate and easy to maintain and expand.

The invention provides an attitude control method applied to a centroid transverse moving spacecraft. According to the method, quaternions are adopted to describe rotation of an engine spray pipe relative to a spacecraft body, and an expectation attitude of the spacecraft, meeting guidance requirements, is determined based on the guidance direction and the rotating quaternions; simulation eulerian angles describing attitude deviation of the spacecraft are brought in, and a variable structure attitude control law is built based on an attitude motion model of the simulation eulerian angles; and the spacecraft attitude is controlled to be in the expectation attitude, so orbital transfer thrust direction guidance can be guaranteed. The attitude control method solves the control law design problem that attitude control is carried out for the spacecraft with a centroid moving transversely through adoption of thrust vectors and an attitude control engine, the adopted attitude description avoids singularity owned by eulerian angle attitude description inherently, and three components of the attitude description have obvious physical significance; and the attitude control law based on the attitude description is simple in form and good in control effect.

A power distribution network N-1 calibration method taking segmental load transfer into consideration comprises the following steps: carrying out initial analysis of a lattice structure; carrying out simplification analysis of the lattice structure; analyzing circuit transfer analysis; carrying out N-1 calibration and load loss calculations of a circuit and N-1 calibration and load loss calculations of a main transformer respectively, namely, carrying out load segmental cutting sequentially when N-1 calibration and N-1 calibration of the circuit and the main transformer do not pass, and carrying out load transfer capability analysis of the main transformer, load transfer analysis of an interconnection unit of a transformer station, overload transfer correction of the main transformer, and transfer capability calculation of the network of the transformer station sequentially; carrying out load segmental cutting when N-1 calibration and N-1 calibration of the circuit and the main transformer does not pass. The calibration method has the advantages that the power distribution network N-1 calibration result can be higher under the premise that the calculation accuracy is guaranteed; load is cut when a calibration result does not pass, so as to facilitate improvement of calibration level of power distribution network power supply safety, and more accurately guide analysis and selection of planning, reformation and running method of a power distribution network.

The invention discloses a realization method capable of grading photos taken by a digital camera and providing technical direction according to score value. The method comprises two parts of a photo parameter extraction system and a grading system. The realization method comprises the following steps that: after the photo grading function is started, the camera automatically applies the parameter extraction system to extract parameters such as the f number, the shutter speed, the white balance, the exposure, the ISO value and the like of a photo when a user takes the photo, compares the extracted parameters with preset standards, grades the extracted parameters, sums up the overall scores according to the weight of various parameters, and outputs the overall scores on an LCD screen, so that the user can look over the scores of various parameters in real time and can adjust and set related camera parameters again according to the graded scores so as to achieve the aim of obtaining better effect when the user takes a photo for next time.

The invention discloses a laser root welding robot inside a pipeline and belongs to the technical field of pipeline welding. The laser root welding robot inside the pipeline comprises a weld joint welding device. A first transmission device is connected with the weld joint welding device. A front end machine base is connected with the first transmission device. A first gear motor is arranged in the front end machine base. One end of a connecting device is movably connected with the front end machine base. A crawler type traveling device is movably connected with the other end of the connecting device. One end of a pushing device is movably connected with the crawler type traveling device. A driving device is movably connected with the other end of the pushing device. A second transmission device is connected with the driving device. One end of the second transmission device is movably connected with the front end machine base. According to the laser root welding robot inside the pipeline, the welding fusion depth is large, the welding speed is high, accurate welding track guidance is provided for a laser welding head, and the quality of laser root welding is guaranteed.

The invention discloses an automatic warehousing sorting station and a sorting method thereof. The automatic warehousing sorting station comprises a sorting terminal, sorting walls, a human-machine interactive interface and a goods transporting area. The sorting terminal comprises a display, a code scanning gun, a vidicon, a barcode printer and a keyboard and mouse. The human-machine interactive interface comprises a bulk item goods shelf pattern display area, a goods image area, an operation instruction, human-machine interactive buttons and a sorting task pattern display area. The goods transporting area comprises a warehouse in-out assigned area, a robot queuing area and a robot waiting area. The automatic warehousing sorting station and the sorting method thereof have the beneficial effects that goods corresponding to warehouse in-out operation every time are displayed through a display screen, the storage warehouse positions of the goods on bulk item goods shelves and corresponding sorting frames during warehouse-out operation are indicated, sorters are rapidly and accurately guided to conduct operation, efficiency is improved, and the error rate is reduced.

The invention relates to a connecting device which has a connecting element (18) of flat beam design fixed to a wiper blade (10) and an adapter (16) joined to said connecting element in an articulated manner, and also a joining element (14) that is joined to a wiper arm (12) and into the u-shaped cross-sectional profile of which the adapter (16) is inserted and, by means of a spring tongue (64) arranged on the top wall (42) thereof, is fixed to a pushbutton (66), the connecting element (18) having a central web (28) running in the longitudinal direction of the wiper blade (10) and bearing a hinge shaft (30) projecting on the long sides thereof, which is mounted in laterally flexible hubs (46) in side walls (40) of the adapter (16). According to the invention, the outwardly facing walls of the adapter (16), namely the side walls (40), the top wall (42), and the end walls (36, 62), have a general wall thickness of at least two millimeters, and the hubs (46) are to be formed as blind holes, the cylindrical surfaces of which form radial sliding surfaces (48) and the end faces of which form axial sliding surfaces (50), which are highly polished with an arithmetic mean roughness of Ra<0.2μ, and that the sliding surfaces (48, 50) be the sole contact surfaces between the connecting element (18) and the adapter (16).

The invention discloses a method for confirming the reservoir forming time of a volcanic rock type oil and gas reservoir. The method comprises the following steps: firstly, selecting an experimental sample; secondly, simulating a thermal history of the volcanic rock reservoir; thirdly, confirming a reservoir forming stage of the volcanic rock type oil and gas reservoir; fourthly, confirming the reservoir forming time of the volcanic rock type oil and gas reservoir. The method indirectly obtains the reservoir forming time of the volcanic rock type oil and gas reservoir on the basis of research on the thermal evolution history of the volcanic rock reservoir and a fluid inclusion forming stage, eliminates influence of volcanic rock diachronism, burial history, thermal history, reservoir forming history and the like on confirmation of the reservoir forming time of the volcanic rock type oil and gas reservoir, improves the accuracy for confirming the reservoir forming time of the volcanic rock type oil and gas reservoir, and provides more accurate guidance on exploration and development of volcanic rock type oil and gas.

The invention relates to a space-time refined soil organic matter content remote sensing dynamic inversion method. The method comprises the steps that the Sentine-2 and Sentine-3 are selected as remote sensing image sources, and a Gram-Schmidt spectrum sharpening image fusion method is used for image fusion, so that the image data used by the method has high space, high time and high spectral resolution. An inversion model framework containing the fused image multiband reflectivity and the multiple vegetation indexes is constructed, an optimal index combination mode is selected from an index selection pool through methods such as relation fitting, selection comparison and autocorrelation verification, and an image inversion method which is based on image fusion and can capture space-time change characteristics of soil organic matter most effectively is constructed and formed. According to the soil organic matter content remote sensing inversion method, the high spectral resolution andthe high space-time precision are both considered, a space-time refined soil organic matter content change diagram in the regional scale can be obtained, and the important basic data and the decisionsupport are provided for exploring the change trend of the farmland productivity so as to accurately guide the agricultural production.

Standard unit general routing method of coupling effect in time delay optimization characterizes in making up time delay optimization routing tree under the condition that any of the wire nets is not restrained to further optimize outing congestion to estimated the link electricity parameter with successively connected linking load model based on empiric analog after elimianting congestion edge, to compute the link delay with congruence variation technology to compute gate delay etc. three steps to calculate the path general delay value with looking-up table+interpolation based on the delay information table given by user, then enhancing to considerate the key path up wire net weighted value of the couple effect to reduce routing density adjacent to the wire net, so as to reduce couple condenser and general path delay to optimize the circuit time delay.

A trailing edge aerodynamic airfoil of a load-bearing aerodynamic surface of an aircraft of the crocodile type has two airfoil flaps, with each flap being integral in a forward section with a rotational shaft that determines the axis of rotation of the airfoil flap. In a position called the zero setting, the airfoil flaps are essentially joined and form a rear section of the load-bearing surface, and each airfoil flap is movable in translation independently of the other airfoil flap, relative to the load-bearing surface, with each flap being entrained in rotation relative to the load-bearing surface around its axis of rotation by the motion in translation. The ends of the rotational shaft have extensions guided by runners fastened to these ends and acting conjointly with racks fastened to the load-bearing surface.

The invention provides an unmanned aerial vehicle control method and system based on multi-agent deep reinforcement learning. The unmanned aerial vehicle control method comprises the steps of: establishing an information acquisition task model according to parameters of an unmanned aerial vehicle group information acquisition system, wherein an information acquisition task is divided into an acquisition subtask and a calculation subtask; constructing a deep neural network model according to the task model, and training the deep neural network model by using a multi-agent deep reinforcement learning algorithm combined with an attention mechanism; and controlling an unmanned aerial vehicle group in an actual environment to complete an information acquisition task by using the trained deep neural network model. According to the unmanned aerial vehicle control method and the system, each unmanned aerial vehicle is used as an intelligent agent, a critic network with an attention unit is used for evaluating the performance of an actor network, and the training speed of the actor network can be accelerated with a more accurate evaluation value; and when an information acquisition task isexecuted, each unmanned aerial vehicle does not need to communicate with other intelligent agents, so that the communication time delay is reduced.

The invention relates to an electrosurgical instrument (10) comprising two limbs (15, 16) that have an articulated connection and that can be actuated in the manner of a cutting or clamping tool. The instrument also comprises opposing electrode parts (22, 23) with coagulation surfaces (22a, 23a) on distal ends (11, 12) of its limbs for holding a vessel or tissue and for passing a current through said vessel or tissue to coagulate the latter, wherein at least one electrode part has an open region (22d, 23d) that acts as a guide gap (24) for a cutting instrument (30), so that the electrode part(s) is/are divided into at least two areas and the cutting instrument can be placed on the held vessel or tissue to execute a cutting operation. In addition, current supply devices (20, 21) supply the coagulation current from a high-frequency generator to the electrode parts. The improved configuration of said electrosurgical instrument allows the open region on the electrode part(s) to afford optimal guidance of a cutting instrument, whereby said open region can be easily prepared for additional cutting operations and/or subjected to an after-treatment. To achieve this, the two or more open regions of the electrode part(s) comprise respective opposing separation surfaces (22e, 22e′, 23e, 23e′) that taper towards the coagulation surfaces.