689 results about "Vertical projection" patented technology

The invention provides a water surface and underwater heterogeneous cooperative control method and device based on a preset time disturbance observer. The control method mainly comprises the steps that a water surface unmanned ship controller calculates an expected control torque according to a specified expected trajectory, the actual state information of an unmanned ship body and a compensation value obtained by the observer; the underwater unmanned vehicle controller calculates an expected control moment according to the expected trajectory obtained by the guidance method, the actual state information of the water surface unmanned ship, the actual state information of the underwater unmanned vehicle body and a compensation value obtained by the observer; and heterogeneous cooperative control of the water surface unmanned ship and the underwater unmanned vehicle is realized. According to the method, guidance of water surface and underwater heterogeneous cooperative control is completed by fusing vertical projection and a sight line method; according to the improved self-adaptive integral terminal sliding mode control method, the external interference is estimated by using the preset time interference observer and is compensated in the controller to improve the anti-interference capability of the system, and the robustness and rapidity of the system are improved while the tracking precision of the system is improved by the provided improved self-adaptive integral terminal sliding mode control method.

Techniques for map refinement (e.g., tracking data refinement) by an inside-out location tracking system may include computing a transform from a reference point to an epipolar line using an Essential Matrix derived from a reference frame camera motion in a live frame, computing several appearance errors between a feature associated with the reference point and other projected and optimized features, using a perpendicular projection hypothesis and an optimized point generated on the epipolar line, and evaluating the appearance errors using a greedy, ordered optimization. If the appearance error is less than a predetermined quality threshold, the optimized point is retained in tracking data. Otherwise the tracking data may be reset at the reference point location for reinitialization. An updated map and associated map data reflecting updated optimized points may be provided, for example, to a client device, as well as returned to a visual inertial odometry system.

The invention provides a safe and rapid evaluation treatment method for overlying strata water diversion under working face mining, in the treatment method, before working face stoping, a waterproof curtain is constructed along the boundary of a surface subsidence range, the waterproof curtain extends into a bottom water-resisting layer from the surface, so that the waterproof curtain is constructed along the vertical projection direction; and the bottom aquifer in the surface subsidence range is completely sealed by the waterproof curtain, so that water inside and outside the waterproof curtain does not interfere with each other, and the water volume influencing the stoping of the working face is reduced. A plurality of water level and crack monitoring assemblies are arranged at the same time, in the stoping process of the working face 1, the water level condition in a waterproof curtain and the crack condition generated by sinking of a bottom waterproof layer are monitored in real time through the water level and crack monitoring assemblies, and corresponding treatment measures are taken according to the corresponding conditions; the waterproof curtain, the grouting operation and the water pumping operation cooperate with one another, the effect that no water is stored in the waterproof curtain is achieved, meanwhile, the construction cost can be greatly reduced, the construction efficiency is improved, and the ecological environment is protected.

The invention discloses a bed load sediment transport rate measurement method based on multi-layer sediment acoustic signal attenuation correction of a Doppler velocity profiler, which comprises the following steps: sampling sediment on the surface of a riverbed in an overtopping area of a to-be-measured river reach, and measuring sediment gradation to obtain the median particle size of the bed sediment; obtaining flow measurement data, and extracting ship speed data from the flow measurement data; calculating a riverbed movement speed according to the ship speed data; filtering the riverbed movement speed data, and calculating a characteristic value of the filtered riverbed movement speed data; respectively calculating the vertical projection area ratio of bed load according to the filtered riverbed movement speed data characteristic values; calculating a dimensionless sediment particle size according to the median particle size of the bed sand; calculating the thickness of a bed load layer according to the dimensionless sediment particle size; calculating the volume concentration of the bed load according to the vertical projection area ratio of the bed load and the thickness of the bed load layer; calculating a multi-layer sediment sound signal attenuation correction coefficient according to the bed load volume concentration; and calculating the bed load sediment transport rate according to the multi-layer sediment sound signal attenuation correction coefficient. The bed load sediment transport rate can be accurately and effectively measured.

The embodiment of the invention discloses a display panel and a preparation method thereof and a display device.The display panel comprises a substrate, a first electrode, an auxiliary electrode, a pixel defining layer and an isolation structure, the first electrode is located on one side of the substrate, and the auxiliary electrode is at least in contact with the edge of the first electrode; the pixel defining layer is provided with a plurality of first openings exposing the auxiliary electrodes and / or the first electrodes. The isolation structure comprises a second opening, and the vertical projection of the first electrode on the substrate is located in the vertical projection of the second opening on the substrate. According to the scheme, the first electrode is contracted in the second opening defined by the isolation structure, the auxiliary electrode provides the electric signal for the first electrode, and the flatness of the pixel defining layer and the isolation structure can be improved.

The embodiment of the invention provides a camera module and electronic equipment, relates to the technical field of camera shooting, and is used for reducing the size of a camera. The circuit board of the camera module can comprise a first part and a second part. The first part is arranged on the side where the first surface of the image sensor is located and covers the non-photosensitive area. The first portion is electrically connected with the image sensor. In addition, the second part is arranged around the periphery of the first part. The vertical projection of the second part on the plane where the first surface is located is not overlapped with the image sensor. In the direction perpendicular to the first surface, the first part can be overlapped with the image sensor so as to reduce the length of the camera module. The first portion is located between the lens assembly and the image sensor such that the thickness of the first portion of the circuit board can be multiplexed with the total length of the lens.

The invention provides a ground satellite signal distributed cooperative processing method and system, and relates to the technical field of communication, and the method comprises the steps: extracting a user MAC address hash value, an emergency priority code and a spectrum occupancy matrix from a synchronous network, and generating a triple feature vector; transmitting the triple feature vectors through a double-layer Mesh network, selecting two reference target points with fixed geographic coordinates on the ground of the disaster area, obtaining three-dimensional coordinates of the reference target points, and constructing a space reference straight line; according to the real-time position data of each node, calculating a vertical projection distance from each node to the space reference straight line, and generating a node offset parameter; and dynamically generating a refraction correction coefficient of the signal propagation path based on a comparison result of the node offset parameter and a preset threshold value, and when the offset exceeds the threshold value, increasing a correction weight by adopting a piecewise linear interpolation method. According to the invention, high-reliability and low-delay emergency communication coverage can be realized.

The embodiment of the invention discloses an array substrate and a display panel, the array substrate comprises a substrate and a plurality of conductive layers, the plurality of conductive layers at least comprise a first conductive layer, a second conductive layer and a third conductive layer which are laminated, the first conductive layer comprises a grid electrode of a driving transistor and a first polar plate connected with the grid electrode of the driving transistor, and the second conductive layer comprises a second polar plate connected with the grid electrode of the driving transistor. The second conducting layer comprises a second polar plate, the third conducting layer comprises a third polar plate, and the vertical projection of the first polar plate on the substrate and the vertical projection of the second polar plate on the substrate are overlapped and respectively form an upper polar plate and a lower polar plate of the storage capacitor; and the vertical projection of the second polar plate on the substrate and the vertical projection of the third polar plate on the substrate are overlapped and respectively form an upper polar plate and a lower polar plate of the voltage-stabilizing capacitor. According to the technical scheme provided by the embodiment, through the storage capacitor and the voltage stabilizing capacitor which are stacked up and down, the layout space utilization rate is improved, the capacitance value of the storage capacitor is increased, and the display effect is improved.

The utility model provides a sunshine-imitating airing device. The sunshine-imitating airing device comprises a base plate; the outer side guide plate is connected with the lengthwise edge of the substrate, an air guide opening is formed in a first segment outside the vertical projection area of the substrate, and a light guide opening is formed in a second segment within the vertical projection area of the substrate; the inner side guide plate is connected with the lower portion of the base plate, and a gap is formed between the lower edge of the inner side guide plate and the edge of the second segment; the adapter plate is connected to the position where the second segment is overlapped with the inner side guide plate; the illumination assembly is connected with the adapter plate and directly faces the light guide port; and a fan. According to the sunshine-imitating airing device, the illumination assembly comprising the multi-wavelength lampwick is arranged, the lampwick having the positive effect on the airing effect can be arranged according to the sunlight components, the layout area of the illumination assembly is large, the illumination area is large, light rays are uniform, and the illumination effect is close to the natural condition.

The invention discloses a display panel and a display device. The display panel includes: a substrate; a driving device layer arranged on the substrate, wherein the driving device layer comprises a driving device; the first shading layer is arranged on the side, away from the substrate, of the driving device layer, and the vertical projection of the first shading layer on the substrate covers the vertical projection of at least part of the driving device on the substrate. According to the pixel driving circuit, the vertical projection of the first shading layer on the substrate covers the vertical projection of at least part of the driving device on the substrate, so that external light can be at least partially shielded from being transmitted to the driving device, the external light irradiating the driving device can be reduced, the influence of the external light on the driving device in the pixel driving circuit is reduced, and the driving efficiency of the pixel driving circuit is improved. The phenomena of light leakage and non-uniform performance of a driving device in the pixel driving circuit are improved, and the display effect of the display panel is improved.

The invention belongs to the technical field of marine environment monitoring and numerical simulation, and relates to a three-dimensional marine element field reconstruction method based on multivariable empirical orthogonal function decomposition. Comprising the steps of S1, multi-source data collaborative preprocessing; S2, MEOF joint modal extraction; S3, vertical projection operator optimization construction; S4, three-dimensional element field dynamic reconstruction; according to the method, through organic combination of multivariable modal decomposition and physical constraint projection, limitation of precision, efficiency and adaptability in three-dimensional field reconstruction in the prior art is broken through, key technical support is provided for real-time monitoring of the ocean dynamic environment, and the method can be widely applied to the fields of ocean disaster early warning, underwater engineering safety guarantee and the like.

The invention discloses a bed load particle movement velocity measurement method based on Doppler flow velocity profiler sound wave scattering correction. The method comprises the following steps: selecting a measurement river reach, sampling silt on the surface of a riverbed on a floodplain of an unsubmerged area, screening the sampled silt, and calculating the median particle size of the bed sand of the river reach according to the screening result; a measurement area is selected, an ADCP and a matched unmanned ship carrying DGPS are used for constant-speed cruise type flow measurement, and flow measurement data are obtained; calculating a riverbed movement speed according to the ship speed data; filtering the riverbed movement speed data, and calculating a characteristic value of the filtered riverbed movement speed data; respectively calculating a bed load vertical projection area ratio and a bed load scattering correction coefficient according to the filtered riverbed movement speed data characteristic value; and calculating the movement speed of the bed load according to the vertical projection area ratio of the bed load and the scattering correction coefficient of the bed load. According to the invention, the difficulty that the Doppler flow velocity profiler cannot be directly used to measure the accurate movement velocity of the bed load at present is overcome.

The invention discloses a planet generation method and system based on spherical display equipment. The method comprises the following steps: acquiring a planet material to be projected; based on preset UV coordinate mapping data, performing spherical projection on the planet material to generate a planet with two poles based on vertical projection and an equator based on cylindrical projection; the acquisition mode of the UV coordinate mapping data specifically comprises the following steps: generating a corresponding cylindrical projection through a cylindrical projection algorithm based on the auxiliary texture; corresponding spherical coordinates are obtained based on auxiliary texture mapping; converting the obtained spherical coordinates into 3D rectangular coordinates; the obtained 3D rectangular coordinates are mapped back to the 2D texture space again, and corresponding vertical projections are generated; determining an equator mask; and generating corresponding UV coordinate mapping data based on the equatorial mask, the cylindrical projection and the vertical projection. According to the invention, through the design of the UV coordinate mapping data, in the process of carrying out spherical projection on the planet material, the resource consumption is reduced, and the dynamic projection precision can be improved at the same time.

The invention relates to the technical field of display, in particular to a display panel and a display device. The display panel comprises: a substrate; a first light-emitting element and a second light-emitting element; a first pixel opening and a second pixel opening; a first light-transmitting opening and a second light-transmitting opening; the maximum distance between the edge of the vertical projection pattern of the first light-transmitting opening on the substrate and the edge of the vertical projection pattern of the first pixel opening corresponding to the first light-transmitting opening on the substrate is L1; the maximum distance between the edge of the vertical projection pattern of the second light-transmitting opening on the substrate and the edge of the vertical projection pattern of the second pixel opening corresponding to the second light-transmitting opening on the substrate is L2, and L1 is smaller than L2; in the peep-proof mode, the first light-emitting element emits light, and the second light-emitting element does not emit light; in the sharing mode, the first light-emitting element does not emit light, and the second light-emitting element emits light. The method has a peep-proof mode and a sharing mode, and is beneficial to reducing the production cost.

The invention provides a photovoltaic module IV testing device and photovoltaic module detection equipment. The photovoltaic module IV testing device comprises an IV tester, a transportation assembly and a grabbing assembly, the top of the IV tester is provided with a functional board; the transportation assembly is in sliding connection with the IV tester, so that the transportation assembly can be switched between a first position and a second position in a reciprocating manner, the first position is located above the functional surface, the second position is located, and the vertical projection of the transportation assembly is located outside the surface of the functional surface; the grabbing assembly is connected with the IV tester, and the grabbing assembly can grab the non-test surface part of the to-be-tested component; wherein the transportation assembly is located at the first position, the transportation assembly transports the to-be-detected component to the position above the functional board in the first direction, the grabbing assembly grabs the to-be-detected component, and the transportation assembly moves towards the second position. The problem that in the prior art, due to the fact that assemblies or testing equipment are damaged, operators often slow down the speed, and the testing efficiency is reduced is solved.

The embodiment of the invention provides a greenbelt arbor configuration method and device based on multi-objective optimization. The method comprises the following steps: repeatedly executing the following steps to obtain a plurality of arbor configuration schemes of the green land: generating an arbor combination which comprises individuals of each kind of arbor at different ages in a plurality of kinds of arbor; calculating the sum of the carbon sequestration amount, the sum of the maintenance cost and the sum of the vertical projection areas of all the individuals in the arbor combination in the whole life cycle of the green land to obtain three target values; if the area-related parameters including the total sum of the vertical projection areas of the arbors meet preset constraint conditions, determining the arbors as arbors configuration schemes, and performing multi-target optimization on the plurality of arbors configuration schemes according to three target values by taking the carbon sink amount, the maintenance cost and the vertical projection areas of the arbors as optimization targets, and an optimized arbor configuration scheme is obtained, so that the optimized arbor configuration scheme better meets the layout requirements of the greenbelt in the aspects of carbon sink amount, maintenance cost and arbor vertical projection area.

The invention provides a display module and a display device, and relates to the technical field of display, the display module is opposite to a display panel of the display device, the display module comprises a first grating layer, the first grating layer comprises a plurality of first light blocking parts distributed side by side in the first direction, and a first opening is formed between every two adjacent first light blocking parts; the second grating layer comprises a plurality of second light blocking parts which are distributed side by side in the second direction, a second opening exists between every two adjacent second light blocking parts, and a first included angle formed between the vertical projection of the second light blocking parts to the first light blocking parts and the first light blocking parts is smaller than 90 degrees; the first grating layer further comprises at least one first light control part; the first light control part is positioned in the first opening; and / or the second grating layer further comprises at least one second light control part, and the second light control part is located in the second opening. Based on the scheme, the display device carrying the display module realizes a multi-visual-area display function, a naked-eye three-dimensional display function and a three-dimensional display function for a plurality of visual-area pictures.

The invention discloses a display panel and a display device. The pixel driving circuit in the display panel comprises a first driving transistor, and the first driving transistor comprises a first electrode and a second electrode; the first electrode comprises a first branch part extending along a first direction, the second electrode comprises a second branch part extending along a second direction, the first branch part comprises a first section and a second section which are arranged along the first direction, the vertical projection of the second section on the substrate is overlapped with the vertical projection of the second branch part on the substrate, and the first section and the second section are arranged along the first direction. The area of the second segment per unit length is smaller than the area of the first segment per unit length. According to the display panel and the display device provided by the embodiment of the invention, the overlapping area between the first branch part of the first electrode and the second branch part of the second electrode is reduced, so that the parasitic capacitance formed between the first electrode and the second electrode of the first driving transistor is reduced, and the driving capability of the pixel driving circuit is further improved.

The lamp pole polishing device comprises two placing tables which are hollow and arranged in parallel, the top faces of the two placing tables are sunken to form placing grooves, and the extension contours of the two placing grooves coincide and are in a horizontal state; a hollow part communicated to the interior of the placement table is arranged on the placement groove in a penetrating manner; an adjusting mechanism and a clamping mechanism are arranged in the containing table, the adjusting mechanism is movably arranged in the vertical direction, and the adjusting end of the adjusting mechanism is located in the projection range of the hollowed-out part in the vertical direction and used for rotating the lamp pole borne on the containing groove when the adjusting mechanism moves upwards by a preset distance in the vertical direction; the clamping part of the clamping mechanism is located in the projection range of the hollow part in the vertical direction; and a grinding mechanism is movably arranged on one side of the two placing tables in the extending contour direction of the placing grooves. The device can automatically polish the lamp pole, can rotate the lamp pole to adjust the polishing position, automatically clamps the lamp pole after adjustment, and is suitable for lamp poles of different sizes.

The invention discloses a Mongolian text line and word alignment corpus construction method based on text line recognition, and the method comprises the steps: carrying out the image segmentation of an image containing Mongolian text based on a vertical projection method, and obtaining an initial text line linear segmentation result; performing text line coarse alignment, and training a text line recognition network by using a text line corpus subjected to coarse alignment to obtain a recognized text character sequence; predicting word segmentation lines in the text lines, and according to the generated word segmentation lines, combining connected domain analysis to generate a word frame; and connecting the frames of the words in the same line to generate a minimum rectangular frame which completely surrounds the whole text line, so as to construct the line and word alignment corpus of the Mongolian text. According to the method, traditional image processing and a deep learning model are combined, the problems of under-segmentation and over-segmentation caused by printing defects of an early-stage lead printing newspaper image are solved, the accuracy of alignment of lines and words of Mongolian texts is remarkably improved, and meanwhile the manual correction cost is reduced.

The embodiment of the invention provides a display module and electronic equipment, relates to the technical field of intelligent wearing, and is used for solving the problem that the size of the electronic equipment is relatively large. In the display module, a supporting sheet is arranged on the back surface of a display screen, and the supporting sheet is connected with the display screen. The piezoelectric vibration piece is connected with the surface, away from the display screen, of the supporting piece. The vertical projection of the piezoelectric vibration piece on the back face of the display screen is located in the vertical projection range of the supporting piece on the back face of the display screen. And the piezoelectric vibrating reed drives the display screen to vibrate to realize screen sounding, so that the functions of sounding devices such as a loudspeaker, a buzzer and a sonar module can be realized. Sound production devices such as a loudspeaker, a buzzer and a sonar module do not need to be arranged in the electronic equipment, and the internal space of the electronic equipment can be saved.

The invention relates to the technical field of building three-dimensional modeling, and provides an ALS point cloud facade geometry-based LLO3-level-tending building three-dimensional model automatic reconstruction method, which comprises the steps of 1, building point cloud segmentation and bottom contour construction: segmenting a roof and facade area from an ALS point cloud, and constructing a bottom contour; automatically extracting the bottom contour of the actually grounded building through the vertical projection of the facade point cloud; step 2, door and window contour extraction based on facade geometry: projecting the facade point cloud into a two-dimensional image, identifying a door and window opening by using an Alpha Shape construction and geometry-semantic detection method, and extracting a door and window contour; and step 3, building a three-dimensional building model with enhanced facade details: inputting the bottom contour and the door and window contour into a modeling frame, and automatically embedding door and window components through polygonal surface patch combination and Boolean operation to generate a building model with a complete structure and semantic details. According to the method, the three-dimensional model of the building tending to the LOD3 level can be better and automatically reconstructed based on the ALS point cloud.

The invention provides a bar code recognition method and system based on segmented wave crests and adaptive threshold adjustment and a medium. The method comprises the steps of obtaining an original image, analyzing the original image based on a positioning algorithm to obtain bar code positioning information, and performing affine transformation based on the bar code positioning information to obtain an aligned bar code image; performing segmented vertical projection on the aligned barcode image to obtain waveform data of each segment, and performing smooth processing and differential processing on the waveform data of each segment to obtain differential waveform data; analyzing the differential waveform data based on a set threshold value to obtain wave crest and wave trough data, and analyzing the wave crest and wave trough data of each section to obtain a stroke code; decoding the run length code, and analyzing whether the decoding succeeds or not; if the decoding is successful, obtaining a barcode recognition result, and if the decoding is failed, adjusting a threshold value; by analyzing the segmented wave crests, the most probable position is extracted as the boundary position of the bar code, and the accuracy of bar code recognition in the industrial scene is improved.

The invention relates to the technical field of construction quality detection, in particular to a building construction quality automatic detection method and system.The building construction quality automatic detection method comprises the following steps that vertical projection plane coordinates of multiple components in a building fabricated structure are obtained, a horizontal edge vertex coordinate set is selected, and the geometric center of the components is obtained through calculation and averaging; and generating a component positioning center vector group according to the component number sequence connection points. According to the method, through extraction of vertical projection coordinates of the components, construction of a positioning center vector, establishment of sequence expression of the position relation between the components, judgment of the consistency of the offset difference change rate and the included angle, continuous offset trend extraction, extraction of the gravity center of the components in the section, calculation of the deviation degree of a connecting line to a theoretical axis, and reflection of the overall offset trend of the component section. And identifying the system characteristics of the error according to the offset consistency and the amplitude distribution. According to the process, the component position, direction and aggregation offset characteristics are integrated in a serialization, vectorization and gravity center weighting mode, and the capacity of trend recognition and cluster error judgment is improved.

The invention discloses a full-color LED structure and a preparation method thereof. The full-color LED structure comprises a first substrate; the first color light-emitting unit and the second color light-emitting unit are arranged on one side of the first substrate, are arranged on the same layer and are prepared at the same time; the third-color light-emitting unit is arranged on the sides, away from the first substrate, of the first-color light-emitting unit and the second-color light-emitting unit, and the vertical projection of the third-color light-emitting unit on the first substrate is not overlapped with the vertical projection of the first-color light-emitting unit and the second-color light-emitting unit on the first substrate. Full-color display can be realized, and the luminous efficiency is improved.

The invention relates to the technical field of humanoid robots, discloses a humanoid robot and solves the problem that the leg distance is too large due to existing coaxial joint layout. In a standing posture, an output flange of the hip pitching joint is obliquely arranged downwards and is fixedly connected with a shell of the leg rolling joint through a rigid connecting piece; the rotating axis of the leg rolling joint is parallel to the advancing direction of the robot; the hip pitching joints and the leg rolling joints are arranged in a staggered manner on a vertical projection plane; on a horizontal projection plane, the projection area of the hip pitching joint at least partially covers the projection area of the leg rolling joint. The positions of the two leg rolling joints are changed, the two leg rolling joints are shifted towards the inner side and the lower side of the body, and the positions, located on the rotating axes of the hip pitching joints, of the rotating shafts of the original leg rolling joints are moved out and moved to the area between the rotating axes of the two hip pitching joints, so that the distance between the two thighs is reduced.

The present invention discloses a field-effect transistor device having a blocking region, for use in solving the problem of short-channel effects of field-effect transistors in the prior art. The field-effect transistor device includes an active layer, and the active layer includes a source region, a drain region, and a channel region located between the source region and the drain region. When the device is switched on, an effective channel and an equivalent source region and an equivalent drain region that are distant from the effective channel at least in the thickness direction of the channel region are formed in the channel region, and the field-effect transistor device supplies an working current by connecting the source region and the drain region by means of the effective channel, the equivalent source region, and the equivalent drain region; the field-effect transistor further includes a carrier blocking region, and in a plane perpendicular to the length direction of the effective channel, the vertical projections of the equivalent source region and the equivalent drain region are located in the vertical projection of the carrier blocking region.

The present invention discloses a noise reduction and flow guiding device for a launch ship guide trough and a design method, which belongs to the field of rocket launch technology, wherein the noise reduction and flow guiding device for a launch ship guide trough comprises a curved guide plate and a fixed bracket; the bottom surface of the guide plate is fixedly connected to the side edge of the guide trough outlet arranged on the launch ship; the lower end of the guide plate is smoothly transitioned to the edge of the guide trough outlet; the projection of the upper end of the guide plate in the vertical direction at least covers a part of the guide trough; the fixed bracket is fixedly arranged on the launch ship and fixedly connected to the guide plate. The present invention can change the direction of the gas jet at the outlet of the guide trough, thereby reducing the influence of the vibration noise generated by the jet tail flame on the rocket body.

The utility model discloses a workpiece gravity center detection device, which comprises a detection table, and a universal ball hinge support II is arranged below the detection table. The leveling adjusting frames are mounted on the bottom surface of the detection table in a central symmetry manner; oil rods of the oil cylinders are correspondingly installed on the three second universal ball hinge supports respectively, and the oil cylinders are communicated with one another through oil pipes; a universal ball hinge support I is arranged on the base, and the bottom of the oil cylinder is mounted on the universal ball hinge support I; and the laser is mounted at the center position of the bottom surface of the detection table and is used for vertically projecting a datum line. According to the workpiece gravity center detection device provided by the embodiment of the utility model, the gravity center of a processed workpiece can be rapidly detected through the synergistic effect of hydraulic self-balancing of the oil cylinder and counterweight fine adjustment of the lead screw.

The invention relates to the technical field of data processing, can be applied to business system platforms of financial science and technology, medical health and the like, and discloses a table generation method, device and equipment based on image data and a medium, the method comprises the following steps: obtaining an initial document image, and carrying out image enhancement processing on the initial document image to obtain a to-be-identified document image; performing visual table detection on the to-be-identified document image to obtain a target table area in the to-be-identified document image, and performing horizontal projection and vertical projection on the target table area to obtain a target table layout; extracting target table data of each table unit in the target table layout, and constructing a mapping relationship between the table units and the target table data; and generating a corresponding structured spreadsheet according to the target table layout, and filling the target table data into the structured spreadsheet according to the mapping relationship. According to the invention, the image table data identification accuracy can be improved.