161 results about "Contact spot" patented technology

The invention discloses a material movement behavior monitoring method and system based on monocular vision, and relates to the field of material movement monitoring, and the method comprises the steps: firstly collecting a material movement video through a monocular high-speed camera, and extracting a continuous state sequence of a material on a two-dimensional image plane through employing an instance segmentation and time sequence tracking technology; the method is characterized in that a time sequence deep learning model is introduced to analyze a state sequence, and a key event that a material collides with a working surface of equipment is automatically identified, so that the collision moment and contact point coordinates are accurately obtained. In this way, the collision contact point is used as a geometric anchor point for three-dimensional space back calculation, a two-dimensional image track is reversely projected and reconstructed into a three-dimensional space motion track in combination with internal parameters of a camera and physical parameters of an equipment reference plane, then key kinetic parameters such as the speed and the recovery coefficient are calculated, and low-cost and high-precision automatic online monitoring is achieved.

The invention provides a virtual reality three-dimensional space data correction method, which comprises the following steps of: firstly, acquiring an image, depth and inertia measurement data of a virtual reality terminal, and a pose, a speed and a force feedback signal of an interaction body, and carrying out time sequence alignment under a unified time reference; an interaction event is identified through collision detection, and parameters such as a contact point, a normal direction, a relative speed, a penetration depth and a contact duration are extracted. Then, physical consistency constraints including no penetration, contact stability, friction consistency, momentum conservation and energy non-increase are constructed, and geometric consistency, depth consistency and physical consistency residual functions are established in the local contact area; and solving surface normal, depth, scale, pose, calibration parameters and other corrections through a robust nonlinear optimization method so as to update the point cloud, the grid and the calibration model. According to the method, the consistency and the stability of geometric modeling and physical interaction in the virtual reality scene can be remarkably improved, and the immersion and the interaction precision are improved.

The embodiment of the invention provides a 3D printing process parameter generation method and device, equipment, a medium and a product. The method comprises the steps that a 3D printing request is received, and the 3D printing request comprises a target three-dimensional model and geometric data of the target three-dimensional model; according to the geometric data, the target three-dimensional model is subjected to layering processing, layering parameters are obtained, and the layering parameters comprise the position of each layer and the thickness of each layer; performing hierarchical calculation on the target three-dimensional model according to the geometric data and the hierarchical parameters to obtain a curved surface normal vector corresponding to a contact point on the surface of the target three-dimensional model; according to the curved surface normal vector, determining a printed piece attitude angle; and according to the attitude angle of the printed piece, the geometric data and the layering parameters, generating process parameters. According to the scheme, the matched process parameters are adaptively set at different curvature positions of the target three-dimensional model through layering processing, so that the accuracy of 3D printing is improved.

To more stably determine the position and attitude of a hand gripping a target object.An information processing device includes: a position / attitude estimation unit that, taking each of points included in point cloud data generated based on a sensing result for a target object as contact points, estimates, for each of the points, candidates for a position and an attitude of a hand that grips the target object; a target object shape estimation unit that estimates a shape of the target object based on a distribution of the candidates for the position and the attitude estimated for each of the points; and a position / attitude determination unit that determines the position and the attitude of the hand gripping the target object based on the shape of the target object estimated.

The invention discloses a method and a device for measuring a dynamic contact angle of liquid on a solid surface. The method comprises the following steps: constructing a to-be-measured system containing a first liquid phase, a fluid phase and a solid phase; immersing the to-be-detected surface of the solid phase in the environment phase upwards or downwards; an end surface object is arranged opposite to the to-be-detected surface, and the two are immersed in the same environment phase; the relative distance and position of the two are adjusted, and a longitudinal fluid bridge is formed through the liquid adding device; the camera device obtains a fluid bridge interface contour image from the side surface; horizontally moving the surface of the end surface object or the solid phase, and applying transverse lateral dragging acting force to the fluid bridge to promote the fluid bridge to deform and contact the peripheral line to move or be about to move; and recording the time sequence change of the image, analyzing and calculating to obtain the time change relationship between the contact angle value and the three-phase contact point position value, and further determining the static, forward and backward contact angles and the contact angle hysteresis value. The method is simple and accurate, has wide applicability, and can cover reliable dynamic contact angle data measurement from hydrophilic to super-hydrophobic surfaces.

A method for landing an aircraft, which takes off and lands vertically, at a predetermined landing site defined by a circular marking that can be captured optically and has a circular outer contour utilizes a landing system. A camera arranged on the aircraft and directed to the landing site is used to capture images electronically, each of which represents a reproduction of the marking detected at least in sections. Each camera image is evaluated in a control device. The control device is used to fit a geometric object with at least one straight line, which has a predetermined line slope in relation to the camera image, into the reproduction in such a way that the line constitutes a tangent through a contact point to the marking detected at least in sections. The control device steers the aircraft in the direction of the contact point determined in this way.

A method of monitoring a physical vapor deposition (PVD) machine is described. The PVD machine comprises a plurality of evaporator boats (14) arranged in a fixture (16), and a plurality of supply wire drives (24) being configured to advance supply wires (20) to the evaporator boats (14). The method comprises the steps of - capturing an image of at least one evaporator boat (14) of the plurality of evaporator boats (14); - extracting at least one image portion of the image corresponding to the at least one evaporator boat (14); - processing the at least one extracted image portion, thereby obtaining at least one processed image portion, wherein processing the at least one extracted image portion comprises detecting a pool of molten material, detecting a supply wire (20), detecting a contact point between the supply wire (20) and the at least one evaporator boat, detecting obscured areas, and / or correcting the at least one extracted image portion for perspective; and - generating visualization data based on the at least one processed image portion. Further, a monitoring system and a PVD machine system are described.

The invention discloses a household oral health monitoring system and method based on image recognition, and is suitable for performing adjacent surface demineralization monitoring of multi-frame angle scanning shooting on a target adjacent surface contact point neighborhood under the condition of light supplement by a user handheld device in a household non-diagnosis and treatment environment. Aiming at the problems that a deep reflective strong bright spot is easily formed in an interdental space through region and is overlapped with a suspected demineralization bright spot on an adjacent surface shallow layer to induce a false focus, so that the risk score is unstable, and the risk score fails and lacks a re-mining basis, a blinding highlight area index sequence is constructed in the interdental space through region and a step blanking index is calculated; determining a cut-in point and a cut-out point of a measurement window by combining single-side shielding shadow boundary propulsion and a boundary quality threshold, extracting demineralization candidate responses only in the window, generating a normalized difference result based on attitude baseline calibration, and outputting an adjacent surface demineralization suspected area and a demineralization risk score; and when the window is not closed or too short, outputting a degradation mark and remining guidance and applying confidence punishment to the risk score.

The invention discloses a design method of a magnetic field driven nano-magnetofluid directional transportation micro-groove texture and the micro-groove texture, and directional transportation is realized by designing a conical micro-groove texture and matching with an external magnetic field driven nano-magnetofluid. And recording the contact point of the nanofluid and the micro-groove texture and the time from the middle end point of the nanofluid to the small end of the channel, designing a calculation method for measuring the overall speed of the liquid drop, optimizing the micro-texture taper angle by taking the fastest overall speed of the liquid drop as a target, and calculating the non-dimensional energy of the liquid drop to obtain the micro-groove texture. The microtexture small end diameter is optimized with the maximum dimensionless energy difference as the target; and calculating the magnetic field force borne by the liquid drop, and optimizing the magnetic flux density by taking the maximum magnetic field force as a target. According to the design method, the optimal micro-texture structure can be optimized, and the fastest rate transportation of liquid is realized.

To accurately measure the temperature of a contact part between workpieces in solid-phase joint.SOLUTION: A solid-phase joining device 1 includes a pair of pressurization shafts 11 and 12, a heating device for heating a contact part where first workpiece W10 and second workpiece W20 pressurized by the pair of pressurization shafts 11 and 12 are brought into contact with each other, and a measurement device 13 for measuring the temperature of the contact part in a non-contact manner by using infrared rays. In at least one inside of the pair of pressurization shafts 11 and 12, a through hole 11b is formed in a pressurization direction. The measurement device 13 receives infrared rays L1 generated from the contact part through the through hole 11b, and thereby measures the temperature of the contact part.SELECTED DRAWING: Figure 1

The invention relates to a system and a method for bending a test article. Systems and methods include a lower support; an upper support; a first coupler connected to the lower support and the upper support at a first contact point and a second contact point, respectively; and a second coupler connected to the lower support and the upper support at a third contact point and a fourth contact point, respectively. The first coupler and the second coupler are configured to hold a test article therebetween.

The present invention discloses a method for identifying pantograph-catenary contact points based on a video surveillance camera, comprising the following steps: S1, training a pantograph based on images captured by a video surveillance camera; S2, performing online identification of the pantograph to obtain the coordinates of the pantograph-catenary contact points. The present invention introduces multi-template matching during the pantograph positioning phase, improving the stability and accuracy of pantograph positioning. The present invention utilizes template matching in conjunction with the pantograph and prior knowledge to determine a training ROI image, significantly improving processing efficiency compared to using deep learning to determine the training ROI image. The present invention introduces a method for recording relative coordinates when marking training data, which is more adaptable to ROI scaling during training and recognition than directly recording absolute coordinates, thereby improving recognition accuracy. The present invention introduces a soft thresholding function as one of the activation functions in the original residual network's basic block, improving the network's noise resistance and robustness.

The utility model provides a bus bar self-checking spot ironing mechanism which comprises a back plate, an electromagnetic spot ironing machine is arranged on the upper portion of one side of the back plate, a first-level buffering assembly is arranged on the lower portion of one side of the back plate, a second-level buffering assembly is arranged on the other side of the back plate, and a copper coil welding head of the electromagnetic spot ironing machine is connected with a ceramic pressing head arranged on the first-level buffering assembly in a sleeved mode. And a limiting screw for preventing the copper welding head from being in contact with the to-be-welded product is arranged on the first-stage buffer assembly. The spot-ironing mechanism has the advantages that the bus bar and the EVA adhesive film are connected through non-contact spot-ironing, the spot-ironing mechanism combines the first-stage buffer assembly and the second-stage buffer assembly, the spot-ironing effect is better guaranteed, and the yield of final products is higher.

Humidity sensor with: - a humidity detection section (30) comprising a pair of detection electrodes (31a, 31b) and a humidity-sensitive film (36), wherein the detection electrodes (31a, 31b) are opposed to each other on a humidity detection section forming surface (20a) of a substrate (20), and wherein the humidity-sensitive film (36) covers the detection electrodes (31a, 31b) and a space between the detection electrodes (31a, 31b); - a contact point portion (40) as an external connection terminal, wherein the contact point portion (40) is spaced from the humidity sensing portion (30) on the humidity sensing portion forming surface (20a) of the substrate (20) and covered with a protective gel portion (50), under a condition that a bonding wire (115) is connected to the contact point portion (40); and - a barrier portion (60) disposed between the humidity sensing portion (30) and the contact point portion (40) on the humidity sensing portion forming surface (20a) of the substrate (20) to prevent the protective gel portion (50) from flowing from the contact point portion (40) side to the humidity sensing portion (30) side, wherein - the barrier section (60) has a barrier line (61, 81) and a humidity-sensitive barrier film (62), - the blocking line (61, 81) is constructed from the same material as the detection electrodes (31a, 31b) and is arranged on the same surface as the detection electrodes (31a, 31b), - the humidity-sensitive barrier film (62) is constructed from the same material as the humidity-sensitive film (36) and covers at least part of the barrier line (61, 81), - the humidity sensor further comprises a plurality of blocking lines (61, 81) which include the blocking line (61, 81) and are arranged side by side in an opposing direction in which the humidity sensing section (30) and the contact point section (40) are opposite each other, and - the blocking section (60) has a recess (63, 64) between adjacent blocking lines (61, 81) of the plurality of blocking lines (61, 81).

To reduce fogging.SOLUTION: An image forming apparatus comprises: a photoreceptor; a rotary that has storage frame bodies each provided with a storage unit and a reception opening, developing rollers, and supply rollers; and toner cartridges. The supply roller has a foam layer formed with foam material and forming an outer peripheral surface of the supply roller, and is arranged such that the foam layer is elastically deformed at a contact part of the supply roller and the developing roller. When an area surrounded by an outer peripheral surface of the developing roller, the outer peripheral surface of the supply roller, and a common tangent of the outer peripheral surface of the developing roller and the outer peripheral surface of the supply roller, the area being on the downstream side of the contact part with respect to a direction of rotation of the supply roller, is defined as a downstream area, while the rotary is in a developing posture, the downstream area is located below the reception opening and at least partially overlaps the reception opening when seen in a vertical direction.SELECTED DRAWING: Figure 7

A first set of contact points for a hull object colliding with a first primitive of a mesh object is determined. An edge clip is generated for an edge of the first primitive based on determining that the hull object generates contact points with the edge. A face walk is performed into a second primitive of the mesh object across the edge for the edge clip. A set of initial contact points for the hull object colliding with the second primitive is generated using the algorithm. A second set of contact points is generated based on projecting each initial contact point in a direction of a contact normal for the first set of contact points onto a plane created by extending a feature of the first primitive. Contact points in the first and second set of contact points are output, but not the contacts along the edge clip.

According to the relay, when a first contact part and a second contact part are separated from each other or make contact with each other to generate an electric arc, a magnetic field formed by a first permanent magnet can play a traction role on the electric arc, and the arc blowing and arc discharging effects are achieved. The electric arc moves along the contact surface, and when the electric arc moves to the arc isolating groove, the arc isolating groove can play a role in isolating, lengthening and blocking the electric arc, so that the arcing time is shortened. Therefore, the defects that the electric arc ablates the inner cavity and causes relay explosion and the like can be effectively avoided, the product performance can still be ensured even under the condition of high load, and the product failure probability can be reduced. And meanwhile, the first contact part is synchronously contacted with the at least two sheet units, and the first contact part and the second contact part have at least two contact points, so that the shunting effect is achieved, the contact resistance can be reduced, the contact stability and reliability can be improved, and the temperature rise can be reduced.

This product is a contactor that is mounted on a printed wiring board and electrically connects the printed wiring board to a mating conductor by elastically contacting almost the top of the portion that extends toward the front side in the bottom view and the A-A' cross-sectional view with the mating conductor.

The invention relates to the technical field of forging, in particular to a pre-forge piece design method for improving forge piece positioning and filling. Comprising the following steps: S1, designing a mold cavity curved surface; s2, the upper cavity curved surface and the lower cavity curved surface are offset by a distance Hs in the direction away from the forge piece, and an offset upper curved surface and an offset lower curved surface are generated; s3, designing an initial pre-forged piece; s4, the pre-forged piece is subjected to intersection analysis with the upper offset curved surface and the lower offset curved surface, and the position of a contact point is determined; s5, judging that the contact point meets the condition, and if the contact point meets the condition, executing S6; if not, optimizing the shape of the pre-forged piece and returning to S4; and S6, outputting a pre-forged piece design meeting the positioning requirement. By forcibly meeting the requirements that the number of the contact points is larger than or equal to 3, the contact points are not collinear, and the gravity center projection is located in the polygonal area formed by the contact points, the problem that the pre-forged piece tilts and slides in the die is thoroughly solved, and it is guaranteed that the material placing position is unique every time and the pressing process is stable.

A method for setting the position of a manipulator (10) in a machining system, comprising: positioning the manipulator (10) such that a reference object with a specific shape, which is gripped by or attached to an end effector (11), is positioned in a workpiece gripping preparation position (14); attaching a contact sensor (8) to a tool carrier (2A); moving the tool carrier (2A) such that the contact sensor (8) is brought into contact with the reference object; determining the positions of translational drive axes at the specified times and calculating contact point positions from the determined translational drive axis positions; calculating an error in the position and / or orientation of the reference object gripped by or attached to the end effector (11) from a plurality of contact point positions and a command value;and compensating the position and / or orientation of the end effector (11) to eliminate the error of the position and / or orientation of the reference object.;

The utility model discloses a film circuit board with an anti-sulfuration function, which comprises an upper circuit layer, a lower circuit layer, a middle interlayer, an upper anti-sulfuration coating and a lower anti-sulfuration coating, and is characterized in that the upper anti-sulfuration coating made of anti-sulfuration materials hermetically covers an upper circuit on the lower side of the upper circuit layer; a lower anti-vulcanization coating made of an anti-vulcanization material covers the lower circuit on the upper side of the lower circuit layer in a sealing manner, and the upper anti-vulcanization coating and the lower anti-vulcanization coating are respectively provided with an upper fracture and a lower fracture for exposing the upper-layer metal contact point and the lower-layer metal contact point; when the film circuit board is used in various environments, the positions, right opposite to the positions of the upper layer metal contact points, on the upper circuit layer are pressed, so that the upper layer metal contact points penetrate through the avoiding hollow-out hole positions in the middle interlayer and move downwards to be in contact with the lower layer metal contact points, and then trigger signals are generated. The operation stability of the film circuit board is effectively improved, and the service life of the film circuit board is prolonged.

The application provides a contact point quantitative evaluation method and device, electronic equipment and storage medium. The method comprises the following steps: selecting sample users whose target information meets preset conditions from all users and adding the sample users to a sample user group; for each sample user currently existing in the sample user group, a first target question is displayed to the sample user to obtain a first target answer selected by the sample user from a plurality of first preset answers of the first target question; a second target question corresponding to the first target answer under each preset evaluation factor of each preset evaluation dimension is displayed to the sample user to obtain a second target answer selected by the sample user from a plurality of second preset answers of each second target question; and a contact point comprehensive influence score of a target contact point on the sample user is calculated according to a preset score corresponding to each second target answer. The application can quantitatively evaluate the comprehensive influence of different contact points according to a unified standard.

The utility model belongs to the technical field of stone sample Poisson's ratio measurement, and discloses an auxiliary device for measuring the Poisson's ratio of a stone sample, so as to solve the problems that the measurement precision is influenced and the number of measurement points is small in the prior art, the device comprises an installation ring, six installation plates are uniformly distributed on the installation ring along the circumferential direction, the six installation plates are divided into three groups, each group of mounting plates are arranged oppositely, sliding sleeve frames with adjustable height positions are arranged on the mounting plates, dial gauge mounting ports are formed in the upper ends of the sliding sleeve frames, and limiting clamping caps for fixing dial gauges are movably arranged at the tops of the sliding sleeve frames. According to the rock Poisson's ratio measuring device, the multi-point precision measurement can be realized, a plurality of groups of dial indicators are arranged, a plurality of test point positions are formed by contact points of the dial indicators and a rock sample, and stress-deformation data of a plurality of different positions can be recorded and analyzed before the rock is damaged, so that the measurement precision of the rock Poisson's ratio is improved. And errors caused by measurement by using a magnetic gauge stand are avoided.

The method comprises: controlling a display device to display a picture, the picture displaying an end effector; determining a contact point identifier and / or an orientation identifier according to pose information of the end effector, wherein the contact point identifier is used to represent a position of a predicted contact point of the end effector with an object when the end effector performs a closing action, and the orientation identifier is used to represent an orientation of the end effector; and controlling the display device to superimpose and display the contact point identifier and / or the orientation identifier in the picture. The technical solution of the embodiment of the present disclosure improves the success rate of the user controlling the end effector to grasp the object.

To provide an operation control method capable of performing object operation without using object information, an operation control device and a program.SOLUTION: An operation control method includes a step for sending acting force information when an operator operates an object to an end effector, a calculation step for calculating target acting force for holding the object by the end effector from an acquired state of the operator and the acting force information, a detection step for detecting contact force at a contact point at which a contact part is in contact with the object, and a control step for controlling movement of a drive part of the end effector so as to make acting force acting on the object from each contact element match the target acting force. In the calculation step, it sets a central coordinate system with the central coordinates of a contact point command value of the end effector calculated from the acting force information as an original point, calculates a contact point position of the end effector in the central coordinate system, and uses a command value based on a contact point position obtained by converting the coordinates of the contact point information according to a change in the central coordinate system calculated from updated acting force information as a correction command value.SELECTED DRAWING: Figure 5

The invention provides a centering rod calibration method, device and equipment and a storage medium, and relates to the field of surveying and mapping, and the method comprises the steps: obtaining the real-time positioning data and real-time acceleration information of a centering rod at the current moment in the shaking process under the condition that the rod tip of the centering rod is kept in contact with a ground contact point; according to real-time positioning information in the detection data at the current moment, determining an actual observation value and a predicted observation value at the current moment by adopting a preset Kalman filtering algorithm; determining filtering information at the current moment according to the actual observation value and the predicted observation value; according to the filtering information at the current moment and the real-time acceleration information at the current moment, whether the centering rod meets a preset error constraint condition at the current moment is determined; if the current moment meets the preset error constraint condition, the error estimation value of the centering rod at the current moment is determined according to the estimation state corresponding to the actual observation value at the current moment, and therefore the situation that the final error estimation value is affected due to wrong measurement information updating can be avoided.

The invention relates to a holding device (1) for holding a flat element (2), wherein the flat element (2) can be detachably fastened to support points (32) of a support body (3) of the holding device via one of its two main surfaces (22, 24), which is a contact surface (26), and wherein at least one actuator (4) and at least one measuring element (52) of a measuring system (5) are arranged on the support body, and the at least one actuator is configured to exert a force on the contact surface of a flat element detachably fastened to the holding device, thereby locally deforming the flat element in the area of ​​a contact point (6) between the actuator and the contact surface, and the at least one measuring element is configured toThe change in distance (A) between the contact surface of the flat element in the immediate vicinity of the contact point and a reference surface of the measuring element caused by local deformation is to be determined without contact by direct measurement against the contact surface.