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239 results about "Contact spot" patented technology
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Methods for predicting and adapting to high frequency torsional oscillation
ActiveUS20250059875A1Vibration measurement in solidsDirectional drillingTorsional oscillationsHarmonic
An accurate and elegant model is provided to characterize HFTO. For Type 1 HFTO, the model can predict frequency of the HFTO based on the distance between a reference location on the bottomhole assembly (e g., the end of the drill bit) and a point 40% up the motor. In short BHA strings there is the fundamental frequency while in longer BHA the first harmonic is used. For Type 2 HFTO, the model can predict frequency of the HFTO based on distance between a reference location on the bottomhole assembly (e.g., the end of the drill bit) and the first slick contact point, which is optionally in the middle of a long flex joint.
Owner:SCHLUMBERGER TECH CORP
Tracking, scanning and measuring integrated system, tracking, scanning and measuring method and platform
The invention discloses a tracking scanning measurement integrated system, a tracking scanning measurement method and a tracking scanning measurement platform. A control device controls a laser emission source to emit distance measurement laser to a contact laser tracking device in a tracking measurement mode; according to an optical ranging signal fed back by the contact laser tracking device, the two-dimensional angle measurement driving device and the laser ranging device are controlled to drive the contact laser tracking device to track the set tracking cooperative target in real time so as to acquire coordinate data of a contact point of the tracking cooperative target and the surface to be measured in real time; and in the scanning measurement mode, the laser emission source is controlled to emit distance measurement laser to the non-contact laser scanning device, and the two-dimensional angle measurement driving device and the laser distance measurement device are controlled to drive the non-contact laser scanning device to scan the surface to be measured according to an optical distance measurement signal fed back by the non-contact laser scanning device so as to obtain scanning point cloud data. According to the invention, high-precision tracking coordinate measurement and high-efficiency scanning measurement can be realized through one instrument, and the detection efficiency is remarkably improved.
Owner:BEIJING CHANGCHENG INST OF METROLOGY & MEASUREMENT AVIATION IND CORP OF CHINA
Head-wearable electronic, method, and non-transitory computer readable storage medium for executing function based on identification of contact point and gaze point
ActiveUS12353627B2Input/output for user-computer interactionDigital data processing detailsMedicineComputer graphics (images)
According to an embodiment, a wearable device may display, based on contact on a second surface identified using a touch sensor, a visual object indicating a first position of the touch input on the second surface in a screen through a display. The wearable device may identify, in response to the touch input, a second position in the screen of a gaze identified based on an image obtained through a camera exposed outside at a portion of a first surface. The wearable device may provide, in response to the second position identified within a specified distance from the first position of the visual object, feedback with respect to the touch input. The wearable device may cease to provide the feedback in response to the second position identified outside from the first position by the specified distance.
Owner:SAMSUNG ELECTRONICS CO LTD
Monocular vision-based material movement behavior monitoring method and system
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.
Owner:ZHEJIANG UNIV
Three-dimensional space data correction method for virtual reality
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.
Owner:LILU (SHANGHAI) CULTURE TECH CO LTD
Method, device and equipment for generating 3D printing process parameters, medium and product
PendingCN121018949AAdditive manufacturing apparatusDesign optimisation/simulationProcess engineeringIndustrial engineering
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.
Owner:SHENZHEN XINGHAN LASER TECH CO LTD
Camera actuator and camera module comprising same
An embodiment of the present invention discloses a camera actuator comprising: a housing; a mover disposed in the housing and having an optical member disposed therein; a tilting guide portion for guiding tilting of the mover; and a first magnetic body which presses the tilting guide portion against the mover and a second magnetic body which is smaller than the first magnetic body, wherein the tilting guide portion comprises: a base; first protrusions protruding from one surface of the base toward the mover; and second protrusions protruding from the other surface of the base in the opposite direction to the first protrusions, wherein any one of the first protrusions and the second protrusions are spaced apart from each other in a horizontal direction and have a plurality of contact points with any one of the mover and the housing, and the first magnetic body is located within contact points facing each other among the plurality of contact points.
Owner:LG INNOTEK CO LTD
Information processing device and information processing method
PendingUS20250353173A1Programme-controlled manipulatorImage enhancementInformation processingPoint cloud
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.
Owner:SONY GROUP CORP
Dynamic identification and measurement method and system for flexible pantograph-catenary contact point of large iron
ActiveCN119478798AGuaranteed real-timeGuaranteed accuracyImage enhancementImage analysisAlgorithmAnomaly detection
The invention relates to a dynamic identification and measurement method and system for a flexible pantograph-catenary contact point of a large iron, and the method is realized by adopting an overall architecture of two processes: the first process is located at a vehicle-mounted end, and the pantograph-catenary contact point is identified by adopting an infrared camera to obtain an image, gray matching NCC and Hough straight line detection; and then real-time rapid analysis is carried out to store possible overrun problem data. And in the second process, the main control device located at the ground end carries out secondary analysis on the abnormal video to obtain final abnormal alarm information. Wherein the second process is realized by adopting target detection of deep learning, and an alexnet model framework is used for training to obtain model parameters of the pantograph and the contact point for forward reasoning. The method comprises the following two steps of: identifying a pantograph area, longitudinally expanding part of the area according to a result of the first step, and performing target detection on a cross-like intersection point in pantograph-catenary contact in the area. The method is good in real-time performance and high in anomaly detection accuracy. The practicability is high, and the popularization significance is high.
Owner:DONGGUAN NANNAR ELECTRONICS TECH
Method and device for measuring dynamic contact angle value of liquid on solid surface
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.
Owner:NINGBO NB SCI INSTR CO LTD
Support garment
A method of 3D printing a garment can include 3D printing a first filament layer extending in a first direction, and 3D printing a second filament layer over the first filament layer. The second filament layer can extend in a second direction different than the first direction such that the first and second filament layers overlap one another at a plurality of contact points and collectively define a plurality of open cells.
Owner:NIKE INC
Airport runway intrusion detection system based on deep learning
PendingCN119672671Aaccurate identificationGuaranteed detection accuracyScene recognitionNeural learning methodsPattern recognitionVideo monitoring
The invention discloses an airport runway intrusion detection system based on deep learning, and is applied to the technical field of target recognition. Comprising a data acquisition module, a data processing module, an airport runway detection module, an intrusion body detection module, a contact point detection module and an intrusion judgment module, wherein the data acquisition module acquires video monitoring data of an airport runway; the data processing module decomposes the video monitoring data into frame images; the airfield runway detection module, the invading body detection module and the contact point detection module are used for detecting the position of an airfield runway, the position of an invading body and the position of a contact point of the invading body and the ground in the image based on the frame image respectively; and the invasion judgment module is used for judging whether an invasion condition exists or not based on a detection result. According to the invention, the intrusion condition of the airport runway is detected, so that the accident occurrence probability of the aircraft in the takeoff process can be reduced.
Owner:INNER MONGOLIA UNIV OF TECH
Mesh
The utility model relates to the field of precision nets, in particular to a net composed of micron-sized silk threads and a manufacturing method and application of the net. The screen comprises an area used for printing, the area is composed of micron-sized silk threads which are staggered in two directions, the diameter of the micron-sized silk threads is 0.1-50 microns, or the long diameter of the micron-sized silk threads is 5-80 microns, or the short diameter of the micron-sized silk threads is 2-30 microns; the silk threads are divided into transverse threads and longitudinal threads, all the transverse threads are located on the same layer, and all the longitudinal threads are located on the other layer different from the layer where the transverse threads are located. The transverse lines are arranged in parallel; the longitudinal lines are arranged in parallel; the transverse line and the longitudinal line are in contact at an angle of 0-90 degrees, and the transverse line and the longitudinal line are fixedly connected at each contact point of the transverse line and the longitudinal line; the silk threads are made of metal. The manufacturing process of the screen is simple, and the requirements of high-precision application scenes (such as silicon wafer silk-screen printing) can be met.
Owner:SHAANXI MEISHIMEICHANG TECH CO LTD
Method, device and equipment for analyzing meshing contact area of face gear pair
ActiveCN119397706AGuaranteed calculation accuracyGuaranteed accuracyGeometric CADSustainable transportationMechanical engineeringComputer program
The invention belongs to the technical field of computers, and provides a face gear pair meshing contact area analysis method which comprises the following steps: inputting design parameters of a face gear pair; three-dimensional coordinates of N contact points corresponding to N preset corners in the meshing process of the face gear tooth surface in the face gear pair are obtained, and the long semi-axis distance of a contact ellipse expanded by each contact point is obtained; mapping the N contact points to a two-dimensional plane one by one to obtain N mapping points; recording an interval between adjacent mapping points on a horizontal axis of the two-dimensional plane, obtaining N-1 intervals, and constructing a mark edge curve function of each interval; obtaining a meshing contact area based on the print edge curve functions of the N-1 intervals; and outputting the meshing contact area. The invention also provides a device for analyzing the meshing contact area of the face gear pair, a computer program product and electronic equipment. The calculation efficiency is improved on the premise of ensuring the precision of the meshing contact area.
Owner:CHONGQING TECH & BUSINESS UNIV
Method for adjusting the height and flatness of a monopolar and / or bipolar plate
The invention relates to a method for adjusting the height and flatness (14, 16, 50) of a monopolar and / or bipolar plate (72), which is manufactured from a base plate (10) or from a base plate (10) and a top plate (12) and is joined by resistance welding. Indentations (32, 34) or protrusions (28) are embossed into the base plate (10) or the top plate (12), the depressions or protrusions (28) serving as tolerance compensation elements (60). The base plate (10) and the top plate (12) are then placed one on top of the other between two flat electrodes (36, 38), which are brought together to a defined distance (44) determined by at least one spacer (46).Subsequently, the depressions or protrusions (28) in the lower sheet (10) or the upper sheet (12), which serve as tolerance compensation elements (60), are pressed into the opposing lower or upper sheet (10, 12), forming an indentation geometry (54) in the latter. A current pulse is then applied to the electrodes (36, 38) to increase the temperature at the contact points formed by the depressions or protrusions (28) and the indentation geometry (54), thereby creating a metallurgical bond.
Owner:ROBERT BOSCH GMBH
Approaches and probes for excitation, detection, and sensing of devices under test
PendingUS20250123320A1Diode testingStatic indicating devicesConductive materialsMechanical engineering
Approaches and probes for excitation, detection, and sensing of samples. An example method includes positioning probes of a test tool relative to contact points that are associated with samples of a sample array such that the probes come into electrical contact with the sample array at the contact points, driving parallel electrical excitation of the samples, where electrical contact between the probes and the contact points is maintained continuously while performing the driving, and the parallel excitation of the samples produces values for testing the samples, and repeating the foregoing one or more times for other contact points. Another example method submerges a probe in a liquid conductive material to provide a conductive liquid at the end of the probe thereof and that can be positioned and / or moved continuously relative to the contact points of a sample to facilitate delivery of an electrical signal to drive excitation of the sample.
Owner:INZIV LTD
Method for landing an aircraft which takes off and lands vertically, aircraft and landing system
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.
Owner:WINGCOPTER GMBH
An online detection method for pantograph-catenary operation status based on key point detection
The present invention discloses an online detection method for the operation status of pantograph-catenary based on key point detection, including the following steps: Install binocular cameras on the left and right sides of the pantograph-catenary of the train, synchronously trigger the binocular cameras, and respectively collect the left and right images of the train at the same moment. Subsequently, obtain the two-dimensional left and right corner points in the left and right images respectively, and find the midpoints of the corresponding left and right corner points in the left and right images respectively. The coordinates are recorded as (x 2d , y 2d , z 2d ). Denote the midpoint of the left and right corner points as the projection point of the contact point on the image. Perform three-dimensional reconstruction on the projection points of the contact points in the left and right images to obtain the three-dimensional contact point, and the coordinates are recorded as (x 3d , y 3d , z 3d ). Denote z 3d as the dynamic contact height. The difference between the x 3d of the three-dimensional contact point and the reconstructed pantograph center point is denoted as the dynamic pull-out value. The online detection method for the operation status of pantograph-catenary based on key point detection of the present invention can achieve high-precision pantograph-catenary contact corner point positioning under various complex line-changing modes, can measure the contact height and pull-out value in modes such as double branch lines, and can give an alarm for abnormal contact.
Owner:JIANGSU JITRI INTELLIGENT OPTOELECTRONIC SYST RES INST CO LTD
Method of monitoring a PVD machine, monitoring system, and PVD machine system
PCT designated stageWO2025242602A1Vacuum evaporation coatingSputtering coatingImage extractionControl engineering
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.
Owner:BOBST MANCHESTER LTD
Family oral health monitoring system and method based on image recognition
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.
Owner:BEIJING YIJIA LAO XIAO TECH CO LTD
Block and contact block
PendingDE112022006690T5Electrically conductive connectionsCoupling device detailsContactorContact spot
A block (12) comprising two contact elements (20) adjacent to each other in a predetermined mounting direction, wherein the two contact elements (20) have approximately inverted U-shapes open in an insertion direction orthogonal to the predetermined mounting direction, wherein the block (12) comprises a support element (22) for supporting the two contact elements (20) and the support element (22) is equipped with a slot (16) for inserting a printed circuit board (14) between the two contact elements (20) along the insertion direction and a first wall area (24a) for preventing a displacement of a contact point (CP) of the two contact elements (20) in the predetermined mounting direction.
Owner:FANUC LTD +1
Design method for directionally transporting micro-groove texture through magnetic field driven nano-magnetofluid and micro-groove texture
PendingCN120372965ALaboratory glasswaresDesign optimisation/simulationMechanical engineeringMagnetic flux
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.
Owner:SOUTHEAST UNIV
Method for producing a three-dimensionally shaped heating foil, heating foil, cover plate for headlights
The invention relates to a method for producing a three-dimensionally shaped heating foil (18), comprising the following steps: - Providing a substrate (20) extending along a film plane (22) with a first substrate region (24) for receiving a heating wire (36) and with a second substrate region (26) adjacent to the first substrate region (24), wherein at least one contact point (38) can be provided or is provided in the second substrate region (26); - arranging at least one connector pad (34) on the substrate (20) in the first substrate region (24); - arranging at least one heating wire (36) on the substrate (20) in the first substrate region (24); - connecting the at least one connector pad (34) and the at least one heating wire (36); - forming the second substrate region (26) to form a three-dimensional shape deviating from the film plane (22); and - Arranging at least one additional pad (40) on the substrate (20) in the first substrate region (24) and in the second substrate region (26) for connecting the at least one contact point (38) and the at least one connector pad (34).
Owner:MARELLI GERMANY GMBH
Contact element with shape memory material
PendingDE102023121762A1Line/current collector detailsShape memory alloy connectionsElectrical resistance and conductanceContact element
The invention relates to an electrical contact element (1) for plugging together with a mating contact (20), wherein the contact element has at least one elastically deflectable spring member (14) which has at least one contact point (18) for contacting the mating contact and is designed to generate a contact force (96) acting on the mating contact during operation, wherein at least one area made of a shape memory material (22) is integrated into the at least one contact element, which can be transformed from a first (24) to a second shape (28) depending on the temperature, wherein the at least one contact point is located in the first shape of the area made of a shape memory material at a first contact position (26) and in the second shape of the area made of a shape memory material at a second contact position (30) in the force-free state (2) of the contact element.The contact element according to the invention is able to reliably maintain a mating contact even under difficult environmental conditions, provides a low contact resistance and is easy to plug together with the mating contact.
Owner:TE CONNECTIVITY SOLUTIONS GMBH
Solid-phase joining device
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
Owner:DAIHEN CORP
EL testing device and testing method thereof
The present invention discloses a novel EL testing device and a testing method thereof, comprising an EL detector and a conveying device, wherein the conveying device is used to convey a photovoltaic component to be tested; the EL detector comprises a housing, an EL camera and a computer processing system, wherein the EL camera is used to obtain an EL image of the photovoltaic component to be tested, the EL camera is fixed in the middle of the top of the housing, and the EL camera is electrically connected to the computer processing system; a sliding component is installed at the top of the housing, and a plurality of connection contacts are slidably connected on the sliding component, and the connection contacts are arranged correspondingly to the wiring box leads of the photovoltaic component to be tested; an adjustment component is installed between two adjacent connection contacts, and the adjustment component is used to adjust the distance between the two connection contacts, and the connection contacts at both ends of the sliding component are respectively connected to the positive and negative poles of a power supply. When the present invention performs an EL test on the photovoltaic component to be tested, it is not necessary to manually connect the wiring box leads of the photovoltaic component to be tested, thereby improving the efficiency of the EL test of the photovoltaic component.
Owner:WUXI JIASHENG FUNENG TECH CO LTD
Systems and methods for bending test articles
PendingCN121805038AMaterial strength using steady bending forcesElasticity measurementTest articleStructural engineering
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.
Owner:THE BOEING CO
A method for identifying pantograph-catenary contact points based on video surveillance cameras
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.
Owner:CHENGDU TANGYUAN ELECTRICAL APPLIANCE
Link chain with optimized link shape
Owner:IWIS ANTRIEBSSYST
Bus bar self-checking spot-ironing mechanism and equipment thereof
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.
Owner:SUZHOU HORDA NEW ENERGY EQUIP