51results about How to "Satisfy positioning" patented technology

The invention discloses a full-automatic road roller location method based on multi-source data fusion, comprising the following steps: setting a boundary marker at the boundary of a construction region, acquiring an image containing the boundary marker by a multichannel synchronous camera, acquiring point cloud data of the construction region by utilizing a laser radar, matching the image with laser point cloud data, identifying a construction region marker, and calculating a construction fence region; and calculating position and attitude information of a road roller in the construction region by utilizing fusion of the laser point cloud data and IMU output information, thus location of an unmanned road roller in the construction region is realized. By virtue of a machine vision locationmethod, vision data is fused with IMU data, a special construction environment of the road roller can be adapted, the problem of signal void due to pure dependence on GPS positioning is effectively avoided, and both location accuracy and speed can meet location and path planning requirements of the unmanned road roller in the construction environment, so that the method disclosed by the inventioncan be effectively applied to a construction site of the road roller, and the problem that the location accuracy of the road roller is poor is effectively solved.

The invention provides a sports event log keeper system which comprises a video and audio collection device used for collecting real-time live video and audio data of sports events, and a log keeper making device which is connected with the video and audio collection device and comprises a video and audio data receiving unit used for receiving the live video and audio data of sports events sent by the video and audio collection device, a video and audio data marking unit used for marking sports event information in a real-time way according to the playing time of sports events to generate log keeper data, a storing unit used for storing the log keeper data, and a video and audio output unit used for outputting the log keeper data. The sports event log keeper system of the invention can cause standard primary cataloging information to be registered in a media file management database and meet the demand of fast locating and frame search by regular condition query, thus re-broadcasting the sports events with high quality.

The invention discloses an INS (inertial navigation system)-assisted wireless indoor mobile robot positioning method, belonging to the technical field of wireless positioning of a robot. The positioning method comprises a training stage and a pre-estimating stage. The training stage comprises the following steps of: integrating an INS and a WSN (web shell navigator) in a local relative coordinate system; and carrying out data fusion on obtained synchronized navigation data by expanding a Kalman filtering wave to obtain continuous and stable navigation information. The pre-estimating stage comprises the following steps of: inputting the position and speed information measured by the INS into the training stage, and carrying out error compensation by a neural-network-trained INS error model to obtain optimal navigation information. According to the method provided by the invention, the INS positioning precision can be improved, and the positioning range of the indoor robot can be expanded on the basis that the WSN network scale is reduced.

The invention discloses a multi-mode satellite positioning navigation terminal antenna. The multi-mode satellite positioning navigation terminal antenna is characterized in that the antenna comprises a laminated microstrip patch antenna, a broadband orthogonal feed network and a connecting probe; the structure of the laminated microstrip patch antenna comprises a capacitor plate, an upper-layer patch, a lower-layer patch and ground from top to bottom; medium substrates are respectively arranged among the capacitor plate, the upper-layer patch, the lower-layer patch and the ground; simultaneously, air compensating layers are arranged among the medium substrate fixed with the capacitor plate, the medium substrate fixed with the upper-layer patch and the medium substrate fixed with the lower-layer patch; and the broadband orthogonal feed network consists of a Wilkinson power splitter and a 90-degree broadband phase shifter and is fixed on the medium substrate under the ground. The antenna has the characteristics of low cost, wide antenna beam, low elevation, high gain, and the like and is quite suitable for application to a high-precision satellite positioning navigation and time service system.

The invention discloses an automatic transferring welding carrying platform for a solar cell piece series welding machine. The automatic transferring and welding carrying platform solves the problems that an existing welding carrying platform is inaccurate for welding alignment of a plurality of grid lines of cell pieces and is poor in welding quality. A welding zone (4) is arranged at the left end of a welding transferring platform (3), a transferring zone (5) is arranged at the right end of the welding transferring platform (3), welding zone welding strip negative-pressure suction holes (6) are formed in the welding zone, transferring zone welding strip negative-pressure suction holes (7) are formed in the transferring zone, a solar cell piece negative-pressure suction groove (8) is formed in the welding transferring platform (3), a negative-pressure cylinder bracket (9) is arranged on a welding carrying platform substrate (2), and a welding strip negative-pressure cylinder (10) and a cell piece negative-pressure cylinder (11) are respectively arranged on the negative-pressure cylinder bracket. The automatic transferring welding carrying platform is a mechanism integrated with machinery, air and electricity, and meets the requirements that welding strips are accurately positioned and constantly heated during the series welding process and the cell pieces are quickly adsorbed in a crossed manner.

The invention discloses a mobile attendance system based on Wi-Fi Aware and Wi-Fi Direct. The mobile attendance system comprises an attendance master server, wherein the attendance master server comprises a function device supporting Wi-Fi Aware and Wi-Fi Direct and a master attendance management system, and the master attendance management system stores identity information and attendance information of an attender and is used for managing the attendance information; attendance management terminals support Wi-Fi Aware and Wi-Fi Direct functions, are used for acquiring basic information of attendance terminals and performs information matching, and an attendance record is generated if matching succeeds; the attendance terminals are connected with the attendance management terminals through Wi-Fi Aware and bind personal information of the attender with MAC (media access control) addresses of the attendance terminals. The system can realize attendance on an occasion without the network and can support multiple attendance management terminals to simultaneously complete attendance of multiple persons in multiple places, and accordingly, the attendance efficiency is greatly improved.

The invention discloses a method and system for calibrating camera parameters of a one-dimensional area array camera set. By means of the method and system, the camera parameters needed when a device is assisted for conducting operation such as positioning, machining and detecting can be obtained. The method includes the steps that pictures are taken by cameras for mark points on a calibrating board to obtain pictures of the mark points, and an x motion platform bears the one-dimensional area array camera set; position coordinates of the mark points in the pictures are obtained; according to the position coordinates of the mark points, included angles theta between the cameras and the x axis, the accuracy p of the cameras or the distance d1 between every two adjacent cameras are calculated. By means of the method in the embodiment, the obtained parameters have the relatively-high accuracy degree, so that when a visual system is used for assisting in the device for conducting the operation such as positioning, machining and detecting, the accuracy of positioning, machining and detecting is sufficiently guaranteed, and the high-accuracy positioning, machining and detecting requirements under certain scenes can be met.

The invention discloses an electromagnetic attraction type carrying and stacking device based on visual multi-sensing. A physical mechanical structure comprises an electromagnetic chuck, and a visualmulti-sensing system is built on the basis of the physical mechanical structure. A depth camera is used for detecting the position posture, color and depth information of a target object and is matched with a mechanical arm of the robot to form a visual closed loop to perform visual servo carrying and stacking operation. A touch switch is used for detecting contact between the target object and anelectromagnetic attraction type end effector. Laser distance measuring sensors are used for improving the stacking precision in a target object stacking task, and the laser distance measuring sensorson the two sides are matched to detect the position deviation of the target object and a stacking pile and are matched with the mechanical arm to make corresponding position adjustment. A force sensor is used for detecting the change of the gravity of the whole device, force closed-loop operation is achieved for target object suction, the operation detection speed is increased, and the operationprecision and the operation efficiency of the electromagnetic suction type end effector are improved through visual, laser and tactile multi-sensor fusion.

The invention provides a multi-function trolley. The multi-function trolley comprises a door frame system, a rebar feeding system and a work platform assembly. The rebar feeding system comprises a rebar containing arch frame, a rotating member, a horizontally-moving member and a rebar falling-proof assembly, the rebar containing arch frame comprises a group of arch frame single piece or at least two groups of arch frame single pieces arranged in parallel; and the rotating member comprises at least one group of rotating single piece, and each rotating single piece comprises a power source and arotating connecting piece. The horizontally-moving member comprises a driving source and horizontally-moving single pieces arranged with the rotating single pieces in a one-to-one correspondence mode. The rebar falling-proof assembly comprises at least one group of rebar falling-proof single piece arranged correspondingly with the arch frame single pieces. The work platform assembly comprises a top platform and a side direction platform group. The multi-function trolley can realize quick feeding of circumferential rebar. The invention further discloses a construction method for the multi-function trolley. The construction method comprises the following steps of circumferential rebar construction, longitudinal rebar construction and waterproof material construction, one machine with multiple purposes is realized, and the practicality is high.

A centering and locating method for machining the end face of the segment of steel cable tower includes such steps as using numeral controlled hydraulic locating system to support said segment and locate it to a machining position, centering the first end face by using 3D tracking measurer to measure machine and 3 laser markers for determining the position relation between machine and workpiece and regulating and locking the position of workpiece, centering the second end face by transporting the segment to machining position, creating the coordinate system of machine, measuring and processing the machined first end face, and checking its position in said coordinate system.

The invention discloses a force servo-controlled power-driven manipulator comprising a manipulator body with a hoisting hand, a control hand and a force feedback control system connected with the control hand; wherein the control hand comprises at least one pulling pressure sensor; the force feedback control system comprises at least one force servo controller, at least one driver and at least one electric motor. The pulling pressure sensor in the control hand receives a signal of a control force and transmits the signal to the force servo controller in the force feedback control system, the force servo controller starts the driver according to the magnitude and the direction of the control force, the driver drives the electric motor to drive the manipulator body to move, and then a hoisted piece hoisted on the hoisting hand of the manipulator body moves on the basis of the speed and the direction controlled by the force servo controller. The pulling pressure sensor can reflect the control requirement of an operator on the power-driven manipulator in real time so that the power-driven manipulator acts like the hand of the operator per se, and the force servo-controlled power-driven manipulator has the characteristics of accuracy in location, sensitivity in response and smoothness and steadiness in motion and is free of impacting shakes.

The invention discloses a synchronous rotating mechanism for inward and outward folding of a flexible screen. The mechanism comprises three rotationally connected cases and rotary mechanisms for connecting the cases, wherein the rotary mechanisms include an outward-folding rotary mechanism and an inward-folding rotary mechanism; the inward-folding rotary mechanism comprises an inward-folding package body and an inward-folding rotary shaft; the inward-folding rotary shaft comprises an inward-folding moving frame, a sliding moving frame and a compensation moving frame, and the sliding moving frame and the compensation moving frame are bilaterally symmetrically arranged, combined and connected; the sliding moving frame comprises a first sliding moving frame body and a second sliding moving frame body; two slots are formed in the inward-folding moving frame; a sliding groove, a sliding block and a sliding post are arranged on each of the first sliding moving frame body and the second sliding moving frame body; each sliding post can slide in the corresponding slot, the corresponding sliding groove and the corresponding sliding block; the sliding posts can rotate in the corresponding slots to be flattened, upward and downward movement is realized, and accordingly, the condition that the mechanism jacks the screen is avoided; clamping point grooves are combined with corresponding positioning pins, so that a clamping point self-locking function is available in both 0-degree and 180-degree states; each sliding groove and the corresponding sliding post are in sliding connection and achieve semi-arc locking synchronization, and a compensation function is achieved in a screen unfolding state.

The invention discloses a craniocerebral operation training simulation model comprising a simulation skull bottom and a simulation skull top cover. The simulation skull bottom and the simulation skulltop cover are detachably connected to form a simulation skull cavity. A simulated ventricle, a simulated brain tissue, a simulated subarachnoid space, a simulated dura mater and a simulated cerebralhematoma are arranged on the inner side of the simulated skull cavity; and a simulation blood vessel is arranged at the bottom of the inner side of the bottom of the simulation skull. According to theinvention, various structures, including skull, dura mater, subarachnoid space, blood vessels, hematoma, ventricle and the like, of the brain of a cerebral hemorrhage patient can be simulated; so that the simulated surgery of cerebral hemorrhage is close to actual operation in the aspects of image interpretation, operation path design, hematoma positioning, skull drilling, bone window forming, dura mater incision, hematoma puncture, hematoma flushing and drainage, channel implantation, microscope or endoscope hematoma removal and the like as much as possible, various simulated operation operations are performed on the model, and various operation skills of cerebral hemorrhage treatment of clinicians are trained.

The invention provides a management method of a watchdog circuit of a fault-tolerant control system, which comprises the following steps of: 1, electrifying the system; 2, resetting the watchdog circuit of the system, clearing a watchdog timer; 3, starting the timing by the watchdog timer, presetting a timing period between a watchdog failure recovery task period and a watchdog failure management period; 4, carrying out software input operation by an application program in each minimum control period; 5, judging whether the application program carries out input operation in the timing period; 6, enabling the output of the watchdog circuit to be effective, keeping enough pulse width for enabling the system to enter interrupt service time; 7, judging whether the system in a debugging development state; and 8, generating an interrupt signal of a processor by the watchdog circuit, latching a failure indication signal, prohibiting a failure computer from outputting a command, and inhibiting the failure from spreading. The management method of the watchdog circuit of the fault-tolerant control system is used for carrying out failure recovery through failure management after the failure occurs, thus the fault-tolerant capability of the system is improved.

The disclosure, which relates to the technical field of positioning, provides a positioning device and a positioning method thereof so that a problem of realizing seamless positioning with indoor andoutdoor fusion can be solved. The positioning device comprises a satellite positioning module, an ultra-wideband (UWB) positioning module, a core processor, an ad hoc network module and a power module. The satellite positioning module is configured to carry out outdoor positioning according to a satellite signal. The UWB positioning module is configured to carry out positioning according to a UWBbase station. The core processor is configured to collect positioning data of the satellite positioning module and / or the UWB positioning module to determine a positioning location and store locationinformation according to a unified standard data format. The ad hoc network module is configured to transmit the location Information. The power module is used for providing power for the positioningdevice. In addition, the embodiment of the invention further provides a positioning method applied to the positioning device. With the positioning device and the positioning method, outdoor positioning, indoor positioning and hybrid positioning in various environments can be realized; and the fused seamless positioning is realized.

The invention relates to a method for estimate that rotor position of switched reluctance motor. Based on the inductance characteristics of the saturated main magnetic circuit, A rotor position estimation strategy with saturated nonlinear inductance interval avoiding detection coil is proposed, Considering the problem of phase shift caused by analog filtering in the process of indirect acquisitionof inductance information of detection coil, a phase shift compensation algorithm is designed according to the phase shift theory to eliminate the position estimation error and further improve the position estimation accuracy. Through the above design, the detection coil technology can meet the requirements of dynamic operation under various load conditions, and can also achieve accurate positioning of the static initial position, to achieve frequent non-reverse starting of the motor. Therefore, it is helpful for its application in aerospace starter generators, electric vehicle drive motors and other applications where the reliability requirements are extremely high and the operating conditions are relatively harsh.

The invention discloses a device for indexing and resetting a paper-based friction plate during attaching, which is used for solving the technical problem that the paper-based friction plate is needed to be positioned, indexed and reset simultaneously in the conventional substrate attaching process. The technical scheme is that the device comprises an indexing mechanism, a fixture part and a resetting mechanism, wherein the indexing mechanism consists of a base (2), a worm shaft (3), a worm wheel (4), an upper seat (5), an indexing main shaft (12), a coupling (18) and a servo motor (19); the fixture part consists of a positioning seat (7), a positioning ring (8), guide rail blocks (13), positioning blocks (14), elastic bodies (15), movable blocks (16), a cylinder fixing plate (17), a resetting spring (20), a triangular cam (21) and a swing cylinder (22); and the resetting mechanism consists of a resetting cylinder (1), bearing covers (6), the positioning seat (7), a mandrel (9), bearing washers (10) and angular contact ball bearings (11). Positioning, indexing and resetting are integrated, so that the requirement of positioning, indexing and resetting the paper-based friction plate during attaching is met.

The invention discloses a baseband part structure for carrying out eight-frequency point processing on satellite signals, which comprises an FPGA module, a processor module, a memory module and a power supply module, wherein the FPGA module is provided with a radio frequency data input interface; the FPGA module comprises a carrier module for realizing carrier generation and variable frequency functions, a pseudo-random code module for completing signal generation, code generation, variable frequency and generating an integral reset mark, a correlator group for providing a delay line function on the local pseudo-random code and providing functions of a plurality of groups of correlators, an observation quantity recording module for recording data information provided by the carrier module and the pseudo-random code module, and a quick capturing module for completing a quick P code direct capturing function and capturing frequency point pseudo-random codes expect the P code. The baseband part structure for carrying out eight-frequency point processing on satellite signals provided by the invention can receive and process the satellite signals with eight frequency points of GPS, GLONASS and BD at the same time.

The invention relates to a remote active radio frequency identification device communication control method used for a highway. The invention overcomes the problems of unable bidirectional communication, unable obtaining traffic flow information in real time and unable mastering vehicle paths until the vehicle is turned off the high way in the prior remote active radio frequency identification technology. The remote active radio frequency identification device communication control method used for a highway is provided. A wireless path identification station continually sends a data packet containing an identification number itself in a broadcasting mode at a set time interval T1, and a data packet that represents a vehicle identification number and is sent back by a vehicle identification card is received by the wireless path identification station within the sending interval. Broadcasting of the identification number itself and confirmation of the vehicle identification number are completed in a same data packet, and the vehicle identification card takes corresponded actions according to different situations. A bidirectional communication function between a wireless vehicle identification card and a path identification station is realized. On the premise that a vehicle path identification function is realized and completed, functions of accurate flow monitoring, vehicle localization and emergent rescue and the like can be realized.

At present, most domestic institutions adopt a manual measurement method for round hole circle center positioning and roundness detection of aeronautical parts, and in the measurement process, the measurement efficiency and measurement precision of observers greatly influence the subsequent working efficiency and precision. Along with wide application of machine vision, the manual measurement modebecomes increasingly unable to meet modern and efficient production requirements. The invention discloses a rapid positioning and roundness detection method for the circle center of a round hole of an aeronautical part. The method comprises the steps: 1, using a CMOS industrial camera for shooting a round hole image; 2, carrying out image preprocessing on the acquired circular hole image; 3, improving a Hough circle transformation fitting algorithm, and quickly and accurately obtaining the circle center coordinate and radius of the circular hole. and 4, evaluating the roundness error of the circular hole by adopting a minimum containment region method on the basis of obtaining the circle center coordinate and the radius of the circular hole. According to the invention, the improved Houghcircle transformation fitting algorithm, the minimum containment region method and the image preprocessing process are achieved through Python and OpenCV, and the positioning precision and efficiencyof the circle center of the circular hole are greatly improved.

The invention relates to a swing arm structure and a wishbone type independent front suspension and car. The swing arm structure comprises an upper swing arm, an upper swing arm rotating shaft, an upper swing arm mounting portion arranged on an auxiliary frame, a lower swing arm, a front camshaft, a rear camshaft and a lower swing arm mounting portion arranged on an auxiliary frame. On the premise of no effect on the whole performance, the upper swing arm and the lower swing arm are in a nonparallel position relationship to improve the anti-dive ability, thus the handling stability of the whole car is improved. The invention further relates to the wishbone type independent front suspension including the swing arm structure, and relates to the car including the wishbone type independent front suspension as well.

The invention relates to cytochemistry and cellular immunology, which are particularly used for observing a marine bivalve meiosis device through immunofluorescence microscopy. A sample can be observed after pre-treatment of fixing and the like, dyeing and flaking. The sample is fixed by phosphate buffered saline (PBS) of paraformaldehyde at a mass percentage concentration of 2 to 6 percent; then,permeabilization treatment and sealing treatment are performed sequentially; immunofluorescence dyeing is performed on sample spindle bodies, and fluorescence dyeing is performed on chromosomes withthe phosphate buffered saline containing propidium iodide of which the concentration is 5 to 20 mg of per liter; and the sample is flaked after dyeing for observation through fluorescence microscopy.The cytological immunofluorescence observation method is suitable for observing the spindle bodies and the chromosomes of the marine bivalve meiosis device synchronously, has the advantages of simpleand direct operation, high definition and high study efficiency, and is a qualitative, positioning and quantitative cytological immunofluorescence observation method which inosculates forms and functions.

The invention discloses a side punching and balancing mechanism and a side punching method for automobile vehicle-mounted power supply shell type parts. The mechanism comprises a lower mold base, a lower mold base balance locking mechanism and a side punching mechanism, wherein the shell type parts are arranged on the lower mold base in a sleeve mode, and the side surface of the lower mold base isprovided with a punching concave portion; the lower mold base balance locking mechanism is used for fixing the lower mold base; and the side punching mechanism is used for carrying out side punchingon the shell parts pressed on the lower mold base. According to the mechanism, the side punching and balancing mechanism is additionally provided with the lower mold base balance locking mechanism, and the lower mold base is fixed through the lower mold base balance locking mechanism, when the side punching mechanism is used for carrying out side punching on the shell type parts, the lower mold base can be ensured not deviated, shaken and inclined after being stressed, and the vertical direction is kept; the roundness of the side punching circular holes is guaranteed, and the precision of thespecial-shaped holes is guaranteed; and the the lower mold base is stably arranged, the service lives of the lower mold base and a male mold can be guaranteed, the punching smoothness is guaranteed, the production efficiency is improved, punching burrs of products are reduced, and the product quality is improved.

The invention discloses an actuating control device for a spatial-bending shape memory alloy actuator. The device comprises a detecting circuit, a selection and amplification circuit, a digital signal processor and a power actuation circuit, wherein the detecting circuit is used for detecting bending signals of the shape memory alloy actuator and transmitting the bending signals acquired in all directions to the selection and amplification circuit; the bending signals are transmitted to the digital signal processor after being selected and amplified; the digital signal processor calculates and determines the heating pulse time of shape memory alloy wires according to the difference between desired signals and actual signals and outputs control electric signals to the power actuation circuit; and the power actuation circuit controls the operation status of the shape memory alloy actuator by communicating and stopping the heating of the shape memory alloy wires. The actuating control device for the spatial-bending shape memory alloy actuator adopts current actuation control, has simple control mode, and is convenient for integration and miniaturization. The actuation control device for the spatial-bending shape memory alloy actuator meets the comprehensive requirement of miniaturization, precision positioning and flexible transmission and has outstanding technical advantage and potential and broad application prospects in the fields of humanoid robots, medical artificial limbs, endoscopes and the like.

The invention discloses a wireless positioning time synchronization method, device and equipment and a storage medium, and relates to the technical field of wireless measurement, and the method comprises the steps: processing a target transmission signal transmitted by a transmitting end, and converting the target transmission signal into a frequency domain to obtain a frequency domain signal; performing cross-correlation by using a local pilot symbol sequence and a target pilot symbol sequence created based on a constant envelope zero autocorrelation sequence in the frequency domain signal to realize integer symbol periodic signal arrival time estimation; a time delay difference model constructed based on an integer symbol estimation result and a target pilot symbol sequence is utilized to realize decimal symbol periodic signal arrival time estimation, and then the integer symbol estimation result and a decimal symbol estimation result are utilized to perform time synchronization. According to the invention, through the optimized pilot frequency symbol sequence, not only can the integer symbol arrival time be estimated, but also the decimal symbol arrival time can be estimated, so that high-precision signal arrival time estimation is realized, and the system simultaneously meets the application requirements of positioning and time service.

The invention discloses an MCB (micro circuit breaker) mounting base. The MCB mounting base comprises a main busbar support and a branch copper bar safety cover. By the aid of a conveniently detachable combined structure, flexibility of the MCB mounting base is improved on the premise of meeting requirements of mounting, positioning, wiring, heat radiation, insulation and the like. When damaged, certain parts can be conveniently replaced. During wiring, wires can be conveniently arranged without detaching the integral mounting base; during production, various parts can be produced integrally, efficiency and speed are high, product quality is improved and production cost is reduced. During detachment, metal screws are reduced, and difficulty in mounting, maintenance and detachment is lowered.

Disclosed is an in-vitro magnetic anchoring system for a magnetic anchoring surgical instrument. The in-vitro magnetic anchoring system comprises a permanent magnet set, a magnetic shielding case and a pushing device. The permanent magnet set is of a section type structure and is formed by stacking a plurality of cylinder sub magnets which are completely the same in the axial direction. The magnetic shielding case enables an external magnetic field generated by the permanent magnet set to be constrained in the long axis direction of the permanent magnet set, so that the intensity of the magnetic field around the magnetic shielding case is weakened. The pushing device helps the permanent magnet set to go in and out of the magnetic shielding case. The in-vitro magnetic anchoring system can further comprise support ring devices, the support ring devices can be fixed at any position on the side face of the magnetic shielding case through positioning screw rods and be connected with the magnetic shielding case through connecting nuts on the support ring devices, and accordingly two in-vitro magnetic anchoring system bodies can be combined. According to the in-vitro magnetic anchoring system for the magnetic anchoring surgical instrument, magnetic force can be adjusted according to the thickness of the abdominal wall of a patient, the interference to other surgical instruments by the permanent magnets in the system can be reduced, the mutual interference between the in-vitro magnetic anchoring system bodies can further be resisted, collaborative matching of a plurality of in-vitro magnetic anchoring system bodies can be achieved, and the in-vivo locating and navigation requirements of a special magnetic anchoring surgical instrument are met.

The invention discloses an intelligent additive manufacturing device and method of a large steel truss in the technical field of steel truss manufacturing. The device comprises a walking mechanism. Arotating seat is fixedly mounted on a top supporting frame of the walking mechanism. The top of the rotating seat is connected with a mounting seat. The side wall of the mounting seat is connected with a bearing arm. The right end of the bearing arm is hinged to a cantilever through a pin shaft. The cantilever is connected with a laser locating device. A telescopic air cylinder is further mountedat the top of the bearing arm. The output end of the right side of the telescopic air cylinder is movably connected with a supporting plate on the cantilever. According to the intelligent additive manufacturing device and method, laser locating and printing within any space range can be achieved, the flexibility of the locating manner is high, the printing material type and the supporting platformsize are not limited, and the locating and printing requirements of large objects can be met.

The invention discloses a line expansion analysis method and device based on network behavior characteristics, and the method comprises the steps: carrying out the deep mining of network behavior datathrough a preset data mining algorithm based on a preset protocol characteristic knowledge base and a named entity recognition technology, and obtaining target network behavior data; carrying out operational analysis on the deeply mined target network behavior data by adopting a preset social network behavior analysis algorithm, and carrying out analytic statistics and classification according todifferent network behavior types to realize community network division of different network social circles; and constructing a relationship network taking the community network as a core, achieving line expansion analysis based on the acquired network behavior characteristic data in the same relationship network, and presenting a line expansion result on a display screen. By adopting the line expansion analysis method based on the network behavior characteristics, the personnel relationship carding, deriving and correlating efficiency is improved, the display mode of line expansion is enriched, and the use experience of a user is greatly improved.