605 results about "Special position" patented technology

The invention relates to a selection method of numerically-controlled machine tool thermal error compensation temperature sensor measuring point positions. The influence of temperature measuring points at all positions on a machine tool thermal error is identified on the basis of a main factor strategy and a weight product method theory. The method comprises the specific steps that firstly, k temperature sensors are arranged at special positions of a machine tool to measure the real-time temperature values, changing along with the time, in running of the machine tool, and meanwhile thermal displacement of a main shaft arranged on a tool rest is recorded; secondly, part of temperature measuring point positions are removed according to the main factor strategy; thirdly, a BP neural network model capable of simulating changes of the thermal error is built; fourthly, the weight product method is utilized for identifying the influence of remaining measuring point positions. According to the method, the problem that in the process of numerically-controlled machine tool thermal error compensation modeling, the temperature measuring points are too many or the robustness of the compensation model is poor is solved. According to the method, temperature measuring modeling with the fewest temperature sensors is utilized for predicating the error generated by dynamic thermal deformation of the numerically-controlled machine tool, the number of the machine tool temperature measuring points is reduced, and cost is saved.

The invention relates to a method for measuring the angular errors of a rotating table of a numerical control machine, which comprises the following steps of: firstly, determining the angular errors of the numerical control rotating table rotating around X axis and Y axis; using a high-precision standard ball as a measuring basis, determining the actual motion trail of the numerical control rotating table according to the special position of the measuring standard ball, and calculating the angular errors of the numerical control rotating table rotating around the X axis and the Y axis, wherein the standard ball is supported by a base bracket and fixed on the rotating table. In the invention, the standard ball and an infrared three-dimensional workpiece measuring head are used for forming a measuring system, the position of circle center and the angular errors of the numerical control rotating table are calculated by detecting the motion position of the standard ball, thereby providinga basis for compensating the annular errors of the rotating table.

The present invention provides a shared bicycle scheduling method and system. The method comprises a step 1, a server end defines a non-parking area, and a remaining area is a non-prohibited parking area; a step 2, the server end synchronously displays the illegal parking bicycle and the non-illegal parking bicycle to the client, and the special position is displayed at the position of the illegal parking bicycle; and a step 3, the server end continuously scans and receives the unlock request signal and the end-and-lock notification of the same bicycle, and in response to the user action, users are divided into the scheduling user, the normal riding user and the illegal parking user. The present invention proposes the shared bicycle scheduling method and system, which uses partition of the non-parking area and the award and incentive modes to guide the user to spontaneously ride out the illegal parking bicycle from the non-parking area and park the bicycle in the non-prohibited parking area, so that the scheduling management cost of the shared bicycle operator is reduced, the utilization rate of the shared bicycle is increased, the scheduling user enjoys the riding discount and the cost of riding is reduced.

The invention relates to a method for automatically measuring the special position of a tunnel boring machine. According to the practical situation of the tunneling operation of the tunnel boring machine in a small underground space of a coal mine, an industrial view camera, an industrial computer, a laser orientation instrument and an image acquisition card are arranged on the back part of the tunnel boring machine. The position of the tunnel boring machine on a coal petrography cross section is measured and calculated, the most reasonable position of a machine body is determined, a command on an excavating operation is made and operators are far away from hazardous areas so as to reduce sudden accidents, enhance excavating safety and keep the tunnel boring machine on a best and most reasonable position and in a best and most reasonable state. A maximum cover angle is + / -60 degrees, a displacement detection deviation is less than 10 millimeters, the detection accuracy of a deflection angle is + / -12 gon, the detection accuracy of a pitch angle is + / -6 gon and the detection accuracy of a roll angle is + / -6 gon so as to improve excavating quality and efficiency. The method is advanced, reasonable and correct, is a very ideal method for measuring the excavation position of a coal extraction tunnel boring machine and can be used in tunnel excavation operation.

The invention provides a sidelight type backlight source module which comprises a light source bracket with a back plate and a rubber frame, LED (Light-Emitting Diode) lamp strips with a plurality of LED light sources, a printed circuit board, a reflecting film, a light guide plate, a brightening film and a scattering film. The light guide plate comprises a light incident bottom surface and a light emergent top surface which is opposite to the light incident bottom surface; scattering lattice points are arranged on the light incident bottom surface of the light guide plate; a gradual change type arrangement way in which the arrangement density degree is determined according to the distances from the scattering lattice points to the LED light sources is adopted for the scattering lattice points; and the arrangement density gradually increases along with the increase of the distances from the scattering lattice points to the LED light sources by regarding the LED lamp strips as boundaries. Compared with the prior art, the sidelight type backlight source module disclosed by the invention provides a backlight source by placing the LED strips at the two sides or single side and changes emergent light brightness at each special position of the light guide plate by setting the non-uniformly distributed scattering lattice points, so that light reinforcement is realized at corresponding position of the light guide plate, which is far away from the LED light sources, and thus ideal light brightness and light emergent uniformity are obtained through the light guide plate.

The invention provides a weld method compounding an ultrasonic and a gas metal arc welding so as to make use of the cavitation effect and the vibration effect of the ultrasonic to lead welding drops generated by the gas metal arc welding to be smoothly transmitted to a welding pool when the drops are still small. And when in welding, an electric arc shrinks under the effect of the ultrasonic and then the stiffness of the electric arc can be enhanced, which has a significant application value for welding of special positions such as a full-position welding, an overhead position welding, a flat position welding and a horizontal position welding, etc.. The invention includes the following steps: an ultrasonic generator is connected with an ultrasonic transducer 2 to convert ultrasonic energy into mechanical vibration; an ultrasonic transformer 3 enlarges amplitude; a conductive tip 5 is combined with the ultrasonic transformer; a protective gas nozzle 4 is fixed on the vibration node of the transformer; a welding wire 1 is connected with the conductive tip 5 to start a welding power supply 9 and then start an ultrasonic power supply after the electric arc becomes stable, then the transducer converts electrical energy into vibration and the ultrasonic transformer enlarges the ultrasonic amplitude which is transmitted to a melting electrode.

The invention discloses a method for splicing images and equipment thereof. The method comprises the following steps: a receiving end acquires splicing configuration related to a plurality of code streams received; and the receiving end splices images in the received code streams according to the splicing configuration related to the received code streams. In the invention, a plurality of code streams are collected by a plurality of image collecting devices having special position relationships at a sending end and the splicing configuration of a plurality of code streams is conducted at the receiving end to ensure that the receiving end is capable of splicing the images in the received code streams, thus realizing the increase of vertical or horizontal viewing angle at a video meeting as required.

The invention relates to a position fingerprint recognize positioning method, wherein it comprises: fixing positioning area, auxiliary area, and relative names, ranges, and extracting the position fingerprint characters, recognizing positioning, training or retraining; the auxiliary area is outside, inside the positioning area or between it and positioning area; the positioning area is set at the position needed high-accuracy position; the auxiliary area is set at the part without high-accuracy position but affected by the positioning area; the positioning and auxiliary areas can be increased or decreased; the position fingerprint data can be downloaded, uploaded or transmitted; the invention can avoid building large position fingerprint database, and user can accurately position at any place, to realize high-accuracy self positioning at high, middle and low movable terminals, to protect personality, without high cost. And the invention can be based on network or third part positioning, to realize positioning at large range at common accuracy and positioning at special position with high accuracy.

An automatic targeting and variable atomizing executor for field weeding operation is disclosed, in particular to an automatic targeting and flow precise control system that calculates the covering area of weeds and determines the position of weeds by means of machine vision and ultrasonic distance measurement. The automatic targeting and variable atomizing flow control system for a weeding robot comprises an industrial control mainboard, a USB camera, an ultrasonic sensor, a linear guide rail, a motor, an electromagnetic valve, a water pump, a variable nozzle, a pesticide storage tank, a chassis and the like. The USB camera, the industrial control mainboard and a singlechip control loop are integrated in a shell and fixed on a guide rail bracket; the ultrasonic sensor is fixed on a nozzle installation frame and moves up and down along with the nozzle installation frame; a main control system collects, analyzes and processes the image information and makes decisions and sends instructions in combination of the singlechip control loop. The invention overcomes the problems that current weeding robots cannot position weeds in special positions precisely and the like, controls the flow precisely and improves the economical efficiency and the effectiveness of pesticide used to a great extent.

The present invention discloses an online urban road route travel time estimation method based on the virtual vehicle locus reconstruction. The method comprises the following steps: an intersection upstream road vehicle detector is controlled by signals to obtain traffic flow data collected in real time, an intersection signal machine is configured to collect signal phase information in real time; the intersection traffic wave locus coordinates are estimated in real time, the impact wave i, ii, iii and iv and the time-space operation locus existed at the signal intersection are drew; the vehicle driving sate is simplified to the state of driving at a free flow speed on a non-queue road section or the state of parking at the intersection; the vehicle time-space coordinates corresponding to the special position information in the virtual vehicle coordinates are extracted to obtain the moment of the vehicle passing through the special position so as to realize the estimation of the vehicle route travel time. The online urban road route travel time estimation method based on the virtual vehicle locus reconstruction can obtain the propagation state of a vehicle departing at any time on the route and the online travel time at any plate on the arrival route so as to have higher timeliness and accuracy.

The present invention discloses a low-complexity method of intraprediction mode selection, two groups of sample points representing texture characteristics are extracted from the current block, according to the cost values of adjacent blocks, a threshold is calculated. The method includes four steps; firstly, the method judges if the current block is located at the special position of an image frame, if yes, an optimal prediction mode at the special position is calculated and then exported, and calculation is finished; secondly, if not, the cost value of the current block under the most possible prediction mode is calculated, if the cost value is less than the threshold, then the mode is exported, and the calculation is finished; thirdly, otherwise, a mode with the least cost value is selected from all non most possible prediction modes and used as a temporary optimal prediction mode; fourthly, the cost value of the most possible prediction mode is compared with the cost value of the temporary optimal prediction mode, and the mode with the least cost value is used as an optimal prediction mode and exported. Because the present invention selects a characteristic point to replace the whole data block, on the premise that the video encoding quality is not obviously affected, the present invention notably reduces the calculation load of the intraprediction mode selection and increases the real-time performance of video encoding.

The invention discloses a method and a device for sheltering an image particular position, which are used for solving the problem that the prior art has no proposal for sheltering video images, and can not only display original images after sheltering particular locations of the video images, but also guarantee security of image transmission. The inventive method comprises the steps of: determining the location of a sheltered image in a first image, and storing the location information of the sheltered image; performing an image scrambling to the sheltered image in accordance with the location information of the sheltered image to obtain a second image. The invention also discloses an image display method, device and an image processing method, system.

The invention discloses a device for automatically assembling screw and an automatically assembling system, the device includes a frame, a locating member, a taking member, a driving member and a screw feeding member: the locating member is for locating a product to special position; the taking member includes a rotating plate, at least three sucking elements fixed below the rotating member and located at a same circumference, and an electric screwdriver connected with the driving member and located upon the circumference; the driving member drives the rotating plate rotating, the electric screwdriver is movably located on the driving member; the screw feeding member includes a feeding plate including feeding positions, each feeding position corresponds to one sucking element; the (driving member drives the sucking element acquiring the screw, and drives the sucking element moving the acquired screw to a position for the electric screwdriver assembling the screw to the product.

The invention relates to a position and posture measuring system and method for mechanical equipment. The position and posture measuring system is characterized in that: four laser distance-measuring modules are arranged at the top of an alley at the back of the mechanical equipment to measure points of special positions on the mechanical equipment so as to obtain four different distances; position offset of the mechanical equipment relative to a predetermined track and angular offset of the mechanical equipment on a vertical surface are calculated based on the four distances; offset data is transmitted to a central processing system on the mechanical equipment through a wireless communication module; position and posture parameters of the mechanical equipment and positioning navigation data can be obtained in combination with a dip angle of the mechanical equipment relative to a horizontal plane, wherein the dip angle is measured by a triaxial acceleration sensor which is arranged onthe mechanical equipment; and the central processing system is used for transmitting the positioning navigation data to a control box of the mechanical equipment. The position and posture measuring system has the advantages of high measuring speed, good real-time performance, high measurement accuracy and no accumulated error, and is suitable for the position and posture measurement as well as the positioning navigation of underground mechanical equipment.

A method for transmitting neighboring cell information of multi-site cell, Base Station (BS), BS control node and communication system thereof are provided in the present invention, and related to wireless communication field. The method includes: a BS acquiring a first configuration information, and the first configuration information includes a neighboring cell information that allows appointed position group in a multi-site cell and transmits the appointed position group over a broadcast channel, and the contents included in the neighboring cell information that transmits the appointed position group over a broadcast channel, and the multi-site cell comprises multiple position groups, and the appointed position group is a part of the multiple position groups; the BS transmitting the neighboring cell information to a idle terminal in the appointed position group to perform neighboring cell measure over a broadcast channel according to the first configuration information. The BS includes an acquirement module and a transmission module. The BS control node includes an acquirement module and a decision module. The system includes a BS and a BS control node. The present invention meets the mobility management needs of a terminal in a special position group and enhances the user experience in the multi-site cell scene.

The invention provides a leakage detection equipment which is equipped with a detection pipeline for detecting leakage of pipeline where liquid flows through and determines whether the liquid leaks from the pipeline based on voltage change of the detection pipeline. The leakage detection equipment is provided, which detects whether the detection pipeline comprising a plurality of leads leaks. The leakage detection equipment comprises the detection pipeline comprising a first to a third wire, wherein end ports of the first to third wires are connected electrically via a diode; a pipeline measuring unit for measuring a pipeline voltage in a special position point of each of the second and third wires after applying constant current to the first wire; and a microcomputer for detecting whether the pipeline leaks based on the pipeline voltage of each of the second and third wires.

This invention relates to one wireless communication read click machine and computer to generate super link system and method about short distance wireless communication to realize real time super linkage and wireless linkage study machine to use read pen user click special position by study machine to generate super linkage on study computer to play super linkage content to allow user read as well as multi-media aid teaching functions; the computer can real time download content servo to establish book and online digital content super link system.

The invention discloses a position-sensor-free control method suitable for four-quadrant operation of a switch reluctance motor, and belongs to a switch reluctance motor control method. The position-sensor-free control method comprises the following steps of constructing a simplified inductance model according to a fourier series expression of inductance of the switch reluctance motor; fitting a function relation in which an inductance model parameter is changed along with phase current by measuring inductances at three special positions of the switch reluctance motor at different phase currents on line, and constructing a non-linear inductance model of the switch reluctance motor; deriving an analysis formula for estimating a position of a rotor of the switch reluctance motor through phase inductance according to the non-linear inductance model; and when the motor runs, detecting the phase current and phase voltage in real time, estimating an excitation phase magnetic chain according to a voltage equation to obtain excitation phase inductance, calculating the current position of the rotor according to the estimation analysis formula by using the derived position of the rotor, and realizing sensor-free running control over the switch reluctance motor according to the estimated position of the rotor. The algorithm is simple, small in calculated amount, favorable for real-time implementation of a micro controller and higher in position estimation precision.

The invention discloses a rendering method, a rendering device and a display device. The method includes the steps of obtaining a second pixel array corresponding to an original image; dividing each second pixel into a plurality of areas, wherein each area corresponds to a virtual pixel; calculating the first brightness value of the sub-pixel R of each virtual pixel, the first brightness value of the sub-pixel G of each virtual pixel and the first brightness value of the sub-pixel B of each virtual pixel; mapping a virtual pixel array to a first pixel array, and calculating the brightness values of all sub-pixels in the first pixel array respectively. No special position arrangement needs to be conducted on the pixel arrays of the display device, the influences of the pixel arrangement of the display device are eliminated, and the application range of the rendering method is widened; in addition, in the rendering process, each second pixel corresponding to the original image is refined, the brightness values of all the sub-pixels in the display device are calculated, and it is ensured that the effect is high when the display device displays a picture; furthermore, the rendering method is easy and convenient, and the hardware converting can be easily achieved.

The invention discloses a fiber gyroscope north seeker indexing mechanism based on four-position north seeking method. According to the invention, functions, such as indexing, locking, unlocking and the like, of the indexing mechanism are realized by controlling a rotation motor and a locking motor and detecting signals of a rotation motor encoder and a photoelectric sensor, thus, accurate location of the indexing mechanism at four special positions is implemented, and the fiber gyroscope north seeking function based on the four-position method is implemented consequently; the fiber gyroscope north seeker indexing mechanism is small in volume and low in weight, meets the requirements on accurate location of the four-position north seeking method and improves the stability and the repeatability of the fiber gyroscope north seeker indexing mechanism.

The invention provides a coordinate system for automatically compensating temperature deformation and tool shape bias. The system comprises a coordinate system management unit, a coordinate system original point offset file analyzing unit and interfaces for realizing some functions together with other units, wherein the coordinate system management unit comprises a tool point coordinate system establishing module and a tool point correction coordinate system establishing module. The coordinate system for automatically compensating the temperature deformation and the tool shape offset has the beneficial effects that a tool point coordinate system is established through the tool point coordinate system establishing module, so that an NC (Numerical Control) machining program is compiled by only programming a position of a tool position, so as to replace a programming mode of programming a movement control point (a special position of an end part of a grinding spindle or a turning head) and programming a tool shape offset compensation code in the prior art. The tool point position offset compensation work by a user through programming is saved. Furthermore, the system can realize real-time compensation, so as to ensure the machining accuracy.

The invention discloses an orthogonal compensation method for triaxial attitude measurement sensor non-orthogonal error. The method comprises: establishing respective independent virtual orthogonal instrument coordinate system for each measure real axis to obtain respective rotation matrix, performing fusing to obtain a triaxial non-orthogonal rotation matrix, so as to obtain an accurate non-orthogonal error model by virtual orthogonal modeling; then acquiring a compensation matrix by measure value and theory value of special positions, performing orghogonal decoupling on a measure result of a triaxial sensor so as to reduce non-orthogonality and measure error caused thereby and improve attitude measurement accuracy.

The invention relates to the technical field of electromagnetic radiation scanning and positioning, and aims to provide an electromagnetic radiation scanning and positioning method to replace the mechanical scanning technology, so that the electromagnetic radiation strength in each position of a circuit to be tested can be rapidly scanned and detected, a radiation source can be fixed, and continuous scanning and dynamic display can be realized. The method adopts an array type electromagnetic radiation detecting probe and the electronic switch technology, achieves unique spectrum and space scanning functions, and realizes the effects of scanning a selected area in a frequency range, and measuring the radiation circumstance of the whole frequency band in each special position of a tested object so as to obtain complete electromagnetic field information of the tested object. Data acquired by a scanning antenna under the control of electromagnetic scanning test software is subjected to fitting processing, so as to draw an electromagnetic radiation frequency spectrum and a spatial radiation cloud picture. The invention provides the method and equipment for the field of electromagnetic radiation measure, so as to quickly perform two-dimensional electromagnetic radiation scanning and positioning in a real-time manner.

The invention relates to a global dynamic path planning algorithm for multiple virtual target points based on a dynamic window. A dynamic window method is applied to the global path planning direction, and the defect that traditional global path planning is discontinuous and unsmooth is improved; and as for specific operation, by adding the multiple virtual target points, updating the course angleof an unmanned vehicle on the special position and adding random obstacles, global dynamic path planning of the unmanned vehicle is achieved, and the global dynamic path planning algorithm is appliedto complex environments such as 8-surrounding tracks in 'Formula Student Autonomous China'. The MATLAB simulation result shows that the unmanned vehicle can effectively avoid the obstacles occurringrandomly, and global path planning and tracing are safely and stably completed.

The invention discloses a field weakening direction sensor calibration method, especially a field weakening direction sensor calibration method used for the magnetic field response value equivalent to or less than that of the earth magnetic field. The realization apparatus of the method comprises a one-dimensional rotating platform with a horizontal table top, a cuboid block for containing the field weakening direction sensor; and the whole apparatus is nonmagnetic. The method comprises: determining the special position of the sensitive direction of the field weakening direction sensor in the coordinate system composed by the magnetic field and the horizontal plane and the coordinate system of the cuboid block, by the sensor output variation along with the special position variation of the field weakening direction sensor including 360-degrees rotation in horizontal direction on the one-dimensional rotating platform and the turning of integer times of the 90-degrees of the cuboid block; and determining the output characteristics of the field weakening direction sensor. The method need not magnetic shielding room or Helmholtz coil used in the conventional field weakening direction sensor calibration, can realize the high accuracy calibration to field weakening direction sensor by simple equipment.

The invention discloses substrate detection equipment. The substrate detection equipment comprises a transmission mechanism for delivering substrates; an imaging mechanism, which is opposite to the transmission mechanism and is used to take photos of substrates transmitted by the transmission mechanism at a time in a special position so as to generate complete images; and a control mechanism, which is electrically connected to the imaging mechanism and is used to control the photo shooting of the imaging mechanism, store and analyze the complete images, and detect the defects of the substrates; wherein the imaging mechanism comprises a high pixel camera and a high resolution industrial lens installed on the high pixel camera, and the high pixel camera is electrically connected to the control mechanism and is controlled by the control mechanism. The provided substrate detection equipment can automatically detects the defects during the substrate transportation process without stopping the transmission mechanism, moreover, the substrates do not need to be fixed, and the one time imaging detection precision is high.

An automatic vision aligned scriber includes a table, an adsorption orientation device, a bridge, a moving platform, a service controller, a printing head, a camera, a lamp and an image processor. The scriber uses a flat table for placing each footwear assembly waiting for scribing. An image system can identify each footwear assembly and measure its position and orientation on the table. A manipulator is used for controlling the printing head to move above the table and printing the lineation on each footwear assembly according to its special position and orientation relative to the table. The scriber has the advantages of digitalization and space saving.

A bicycle cable assembly mainly includes an external protection tube composed of several hollow sleeves hooking together. Hooks and engaging edges of the sleeves hook together so that the external protection tube is formed and can be properly adjusted according to a length of a cable and a special position by increasing or decreasing the number of sleeves. Also, the hook hooking the engaging edge can prevent the external protection tube from being arbitrarily disassembled by others. Also, it is possible to effectively prevent an inner protection tube from exposing to the outside and thus being damaged. Thus, a protection layer can be indirectly added to the bicycle cable assembly.

The invention discloses a rapid three-dimensional microscopic imaging system. The system includes a microscope, a field iris diaphragm, a narrow-band optical filter, a beam-splitting grating, a multiple focal-length lens array, a micro-lens array and an image sensor. The microscope amplifies a microscopic sample and images the microscopic sample to an image-plane extraction opening; the field iris diaphragm is used for restraining a post-imaging field range; the narrow-band optical filter is used for conducting narrow-band optical filtering on information from the sample; the beam-splitting grating is used for conducting beam splitting on microscopic output images at two-dimensional space, wherein the beam splitting is conducted after the microscopic output images go through a first-stage 4f system; the multiple focal-length lens array is used for adding different phase modulations into various light beams, so that images with different depths are obtained on a post-lens rear focal plane; the micro-lens array is used for modulating light rays at different angles to different special positions behind micro lenses, wherein the modulating is conducted after the light rays at the different angles go through the beam-splitting grating and the multiple focal-length lens array; the image sensor is used for recording sample images which are modulated by preceding stages. According to the system, the multi-depth synchronous imaging can be achieved at the single imaging speed of normal wide-field microscopes, the imaging is fast, the image resolution is high, and the system can be used for living samples; meanwhile, the system is simple in structure, and the imaging depth interval is convenient to adjust.