88results about How to "Improve horizontal accuracy" patented technology

The invention relates to a capacitive sensor (2) for detecting the level (52) of a liquid (54) in a tank (48). The inventive sensor consists of: a flat longitudinal support (4) comprising proximal (8), central (10) and distal (12) parts and connection means (6) which are located in the proximal part (8) and which are used to connect the support (4) and the exterior of the support (4) electrically; a measuring pair (14) comprising interdigital arms which are disposed on the support (4) at least in the central part (10) thereof; and a reference pair (16) comprising interdigital arms which are disposed on the support (4) in the distal part (12) thereof. The aforementioned support (4) comprises at least three layers, and the reference pair (16) is linked to at least one connection track (26) which is located in an inner layer (24) of the support (4) and which is linked to the above-mentioned connection means (6). The invention also relates to a tank (48) comprising one such sensor (2).

The invention discloses a vehicle-mounted camera automatic calibration method and device, and a readable storage medium. According to the vehicle-mounted camera automatic calibration method, rigid targets in a plurality of road images acquired by the vehicle-mounted camera to be calibrated are identified, so that relatively large errors caused by taking changeable flexible targets such as a humanbody in the images as a calibration basis to a calibration result are avoided, and the stability and the precision level of a calibration process are improved; the method comprises the following steps: acquiring initial visual parameters of a plurality of road images so as to obtain a plurality of reference sample data; and determining the target visual parameter with the maximum possibility through the Gaussian distribution characteristics and the plurality of initial visual parameters to calibrate the vehicle-mounted camera, so that the calibration precision is improved. Besides, compared with the prior art, the method has the advantages that full-automatic calibration can be carried out without any external manual assistance, professional technical support is not needed, the calibrationdifficulty is greatly reduced, and the method has wide adaptability and advancement.

The invention discloses a remote sensing image water body extraction method and system based on deep learning. By utilizing China's high score-No.1/No.2 (GF-1/GF-2) and resource-No.3 (ZY-3) satelliteimages and two kinds of deep learning convolution neural networks (CNNs) of U-net and Densenet, a novel CNNs model for extracting water bodies is provided. By labeling water bodies in a large number of high-resolution remote sensing images, obtaining water body labeling results in the images to serve as a training set; Carrying out a training test on the high-resolution remote sensing image by using the established CNNs model to obtain a binary image of the water body; And identifying the pixel value identified in the binary image to obtain the water body target. According to the method, the water body information in the high-resolution remote sensing image can be quickly extracted in a high-precision and automatic manner, the intelligence, automation level and extraction precision of water body extraction are improved, and the method can be widely applied to various fields related to water body extraction.

A magnetic annealing device for inserting a recording medium 1 provided with an axial hole formed at a center thereof and having a disk shape into a chamber 10 and applying a heat treatment to the recording medium 1 in a magnetic field is provided with a magnetic circuit for forming a magnetic field in the chamber 10, the magnetic circuit comprises a pair of magnets 4 and 5 disposed with a distance therebetween along an axial direction of the axial hole and having magnetic fields directionally opposed to each other and a first ferromagnetic substance 6 disposed between the pair of magnets 4 and 5, wherein the recording medium 1 to be heat-treated is disposed at an intermediate position between the pair of magnets 4 and 5 facing each other in the state in which the first ferromagnetic substance 6 is inserted into the axial hole. A second ferromagnetic substance 7 having a ring shape is preferably disposed in a periphery of the recording medium 1.

The invention provides a knob type horizontal workbench which is used in industrial production or experimental process to provide an excellent horizontal working plane. The knob type horizontal workbench consists of a workbench surface, horizontal tubes, screw rods, knobs and bottom pins, wherein the workbench surface is a flat rectangular solid with excellent flatness, and is grinded by stainless steel; four sides of the workbench surface are provided with a horizontal tube respectively; the horizontal tubes are horizontally embedded into the sides of the workbench surface, and the length of the horizontal tube is half long side of the rectangular shape of the side; the horizontal tubes are made or organic glass, are filled with water, and a bubble is reserved in each horizontal tube respectively; the four bubbles are in positions of center scale of the horizontal tubes when the plane is completely horizontal, and four completely same precise screw rods are fixed under the workbench surface, fine screws are formed on the precise screw rods, and the lower side of each screw rod extends into a sleeve type bottom pin through a screw knob; a corner of the workbench surface can be effectively lifted by rotating the knob, the size of each part of the horizontal workbench is determined according to particular use condition; and when working, the horizontal workbench is placed on the plane, and the bubbles in the four horizontal tubes are in the positions of the center scale by rotating the knobs above the four bottom pins, so that the workbench surface is in an accurate horizontal state. The knob type horizontal workbench can provide an excellent horizontal working surface, is convenient to adjust, and has high horizontal accuracy.

The invention discloses a keel welding production line and a welding rotating device thereof. The welding rotating device comprises a base, and a rotating table rotationally connected with the base through a rotating shaft; the rotating table is provided with a first welding spot set and a second welding spot set; the lower end surface of the base is slidingly connected with a line body of the production line through a slide block; and the rotating shaft is arranged in the vertical direction, the top end thereof is fixedly connected with the rotating table, and the outer peripheral direction thereof is rotationally connected with the base through a bearing. The welding rotating device further comprises a power element; and the rotating table rotates by 180 degrees in the horizontal plane around the rotating shaft under the effect of the power element. The welding rotating device can realize automatic rotation of the rotating table, so that the production efficiency is improved, the production takt is guaranteed, and the labor intensity of workers is reduced.

The invention discloses a 3D printer supporting platform with a polishing mechanism. The 3D printer supporting platform with the polishing mechanism comprises a base, a supporting platform body and an unloading box, wherein the output ends of electric lifting supporting rods are fixedly connected with the supporting platform body above the base; a cavity is formed in the center of the top of the supporting platform body; a rotary motor is installed in the center of the bottom of the supporting platform body through a bolt; an output shaft of the rotary motor extends into the cavity and is fixedly connected with a supporting board; the unloading box is arranged on the supporting board; cylinders are installed at four corners of the top of the supporting platform body; grooves are formed in the middles of the two sides of the top of the supporting platform body; polishing machines are arranged inside the grooves; auxiliary unloading boards are fixed to the two ends of the top of the supporting platform body; and rollers are evenly installed on the inner sides of the auxiliary unloading boards. As the grooves are formed in the two sides of the top of the supporting platform body and the polishing machines are arranged inside the grooves, after molding is finished, the polishing procedure is started directly, and the production efficiency is improved.

The invention provides a real-time online measurement device comprising a controller, an AGV navigation trolley, a set of clamp, a measuring machine and a material feeding and discharging mechanism capable of replacing the clamp and grabbing a workpiece. The measuring machine and the material feeding and discharging mechanism are arranged on the AGV navigation trolley. The controller is connected with the AGV navigation trolley, the material feeding and discharging mechanism and the measuring machine in a communication manner. The problems of high measurement error, high rejection rate, high cost, low processing efficiency and requiring artificial participation due to the fact that the quality of the processing workpiece cannot be monitored online in real time in workpiece measurement in the prior art can be solved.

The invention relates to an accurate positioning 3D printer. The accurate positioning 3D printer comprises a base, a support plate, a printing platform, a printing head, an X-axis movement mechanism, a Y-axis movement mechanism and a Z-axis movement mechanism, wherein the X-axis movement mechanism comprises a first motor, a first bottom plate, a first baffle, a first screw rod, a first limiting rod and a first sliding block, the Z-axis movement mechanism comprises a second motor, a second bottom plate, a second baffle, a second screw rod, a second limiting rod and a second sliding block assembly, the second sliding block assembly comprises a second sliding block, a correction unit and a control unit, and the Y-axis movement mechanism comprises a third motor, a third bottom plate, a third baffle, a third screw rod, a third limiting rod, a third sliding block and an adjustment assembly. According to the accurate positioning 3D printer, the positioning accuracy of a Y axis and a Z axis is increased, the adjustment assembly is additionally arranged in the Y-axis movement mechanism, so that the horizontal accuracy of the Y axis can be increased, and the control unit and the correction unit are additionally arranged in the Z-axis movement mechanism, so that the vertical displacement of the Z axis is stable and accurate.

The invention discloses a satellite positioning enhancing method based on a receiver clock offset generalized prolongation approach method. According to the method, a generalized prolongation approach mathematic model and a high-accuracy and high-sensitivity receiver clock offset extrapolation model are combined, a receiver clock offset is predicted and extrapolated to obtain a clock offset value of a receiver when satellite signals are blocked, and therefore three-dimensional positioning can still be achieved in an assisted mode on the condition of incomplete positioning; the generalized prolongation approach mathematic model is adopted to establish a high-accuracy clock offset calculation mathematic model, and a new constraint positioning enhancing method is established with the calculated clock offset as a constraint condition; the generalized prolongation clock offset approach model has both the advantages of an interpolation method and the advantages of a fitting method and can lock latest observation data, so that the clock offset model better conforms to the real-time change characteristics and law, and higher fitting and extrapolation accuracy is obtained. The satellite positioning enhancing method has high practical value and practical significance.

The invention discloses a right-side front door frame assembling and welding tool and an installing and adjusting method thereof, and is applied to the field of carbon steel welding. The right-side front door frame assembling and welding tool comprises a threaded jacking clamp, a limiting block, a down pressing quick clamp, a cushion block, a reinforcing plate gasket, a jacking quick clamp, a stand column and a cross beam. The installing and adjusting method is characterized in that components are installed, leveled and installed as a criterion. The method mainly solves the problems that the current right-side front door frame assembly is welded by manual assembly, the size of the assembly is determined by means of measurement of a measuring tape, the size of the assembly is not stable, the manual assembling speed is low, the production efficiency is low, no tool clamp is used to fix, and welding deformation is easily generated after welding. The ingenious design and effective installation and adjustment of the welding tool are realized so that the inner width, the inner height and the diagonal dimension of the right front door frame in the production process are controlled, the welding deformation is reduced, the size deviation is low, the product percent of pass is high and stable, and the production efficiency of the aluminum alloy container body is improved.

The invention relates to the technical field of camera testing, and particularly discloses camera testing equipment and a camera imaging testing method. The camera testing device comprises a supporting platform, a first adjusting module, a second adjusting module and an image receiving assembly. The first adjusting module comprises an XY moving platform and a rotating module arranged at the driving end of the XY moving platform, and the driving end of the rotating module is connected with the collimator; the second adjustment module comprises a moving module and a horizontal fine adjustment module arranged at the driving end of the moving module, and the camera is supported on the horizontal fine adjustment module; and the image receiving assembly is used for receiving image signals shot by the camera. Under the condition that the angle of the camera does not need to be adjusted, the imaging angle of the camera during image card shooting can be adjusted by adjusting the rotating module. Meanwhile, the horizontal precision of the camera adjusted by the horizontal fine adjustment module is high, so that the data detected by the method is accurate, the adjustment process is simple and convenient, and the test efficiency is improved.

The invention discloses a control device for automatic distribution of a sea surface oil spilling oil containment boom. The control device comprises a programmable logic controller, and further comprises a first hydraulic motor and a second hydraulic motor. The programmable logic controller is connected with a first proportional valve through a first proportion amplifier, the first proportion amplifier is connected with the first hydraulic motor, and the first hydraulic motor is connected with a first reduction box; the programmable logic controller is connected with a second proportional valve through a second proportion amplifier, the second proportion amplifier is connected with the second hydraulic motor, and the second hydraulic motor is connected with a second reduction box. The invention further discloses a control method for automatic distribution of the sea surface oil spilling oil containment boom. Influences of stress unevenness of the two motors on a system can be effectively reduced by the adoption of an equivalent control mode, the anti-interference capability of the system is improved, finally, the purpose that speeds of the two hydraulic motors stressed unevenly are proportional to each other is achieved, coordination control over the revolving speeds of the two motors in an equivalent control mode is achieved, and the automation level and the control accuracy of the system are improved.

The invention discloses a driving pressure regulator. Through adoption of a second director that can input second driving air pressure to a driver, air pressure in a third cavity and loading force of an elastic device inside the driver can be balanced without increases of the area of a second isolated film in the driver when first air pressure has a high air pressure value or the flow of the first air pressure is large. The technical effects are that sensitivity and control precision of the driving pressure regulator are guaranteed while the application range of the driving pressure regulator is increased.

The building formwork supporting device that is convenient to transport and use in the present invention is composed of a supporting plate, a pneumatic telescopic rod, a hinge screw, a triangle bracket, a connecting beam, a grounding wooden bracket, an air injection hole, a bracket leg, a hoop, a pressure display gauge and a pressure sensor. Composition, the support plate is tightly connected with the upper end of the pneumatic telescopic rod through hinge screws, the tripod is composed of bracket legs and hoops, the pneumatic telescopic rod passes through the hoop of the tripod bracket, and the pneumatic telescopic rod and hoop are connected by hinge screws Tightly connected, the bracket legs of the tripod are connected to each other through connecting beams, the grounded wooden support is solidly connected to the lower end of the pneumatic telescopic rod, the pneumatic telescopic rod is provided with an air injection hole, and the pressure sensor is provided with two, which are fixed to the support plate respectively. The pressure display gauge is fixedly connected to the lower end of the pneumatic expansion rod, and the pressure display gauge is electrically connected to the pressure sensor. The beneficial effects of the above-mentioned technical solution are high support stability, high level accuracy, high support effect, and the pressure between the support plate and the building formwork can be controlled at any time, the support effect can be enhanced, and the project quality can be guaranteed.

The invention discloses a half-moon type tool magazine structure. The half-moon type tool magazine structure comprises a tool magazine body, a driving device, a cutter disk and clamps, wherein the driving device comprises a driving motor and a harmonic reducer; a motor output shaft of the driving motor penetrates through the tool magazine body and then is connected with the harmonic reducer; the cutter disk is arranged at the top of the harmonic reducer and connected with the harmonic reducer; a plurality of cutter disk mounting tables are evenly arranged on the edge of the top face of the cutter disk; a tool mounting groove is formed in the table top of each cutter disk mounting table; the U-shaped bottoms of the clamps are clamped into the tool mounting grooves; and the two ends of the clamps extend out of the tool mounting grooves and can be used for clamping tools. According to the half-moon type tool magazine structure, the harmonic reducer is driven by the driving motor to act and directly drives the cutter disk to rotate, other extra transmission structures are not used indirectly, thus, the structure of a driving system is greatly simplified, the situation that the cutter disk bumps up and down during rotation can be avoided, the horizontal precision and transmission stability of the cutter disk during operation are improved, the positioning accuracy is improved, and the machining precision is ensured.

The invention discloses a portable 3D printer storage box. The portable 3D printer storage box comprises a box body, a box cover and a baseplate; the box cover is hinged to the top end of the left side wall of the box body; an ascending switch and a descending switch are mounted on the right surface of the box body; a clamping module is arranged at the top end of the right surface of the box body; a clamping groove corresponding to the clamping module is formed in the inner surface of the right side wall of the box cover; a groove is formed in the upper surface of the box cover; and a hand lifting device is mounted on the upper surface of the groove. The portable 3D printer storage box is simple in structure and skillful in design, achieves effective protecting effect on a 3D printer through matching use of the box body and the box cover, is convenient in carrying through arranging the hand lifting device on the cover body, and can automatically level the baseplate to improve the horizontal precision of the printer so as to meet the working requirements of the 3D printer through matching use of the baseplate, a first lifting rod, a second lifting rod, a dip angle sensor and a controller.

A disclosed full polarization-maintaining light path of an optical fiber gyroscope comprises a high polarizing SLD light source, a polarization-maintaining beam splitter, a Y waveguide and a polarization maintaining fiber coil; the high polarizing light source goes through the polarization-maintaining beam splitter and then is input to the Y waveguide; the two tail fibers of the Y waveguide are respectively connected with the two ends of the polarization maintaining fiber coil; and the polarization-maintaining beam splitter is connected with a detector, and is used to perform beam splitting on a light wave signal returned by the Y waveguide, so that the light wave signal returned by the Y waveguide is detected and converted into an electric signal which is resolved by a subsequent resolving circuit. The full polarization-maintaining light path of the optical fiber gyroscope is capable of inhibiting polarization cross-coupling in the whole light path, and thus polarization noise of the optical fiber gyroscope is inhibited, and the precision of the optical fiber gyroscope is improved.