40 results about "Shortest distance" patented technology

A radar device which is installed in a vehicle or the like needs to detect a target at a short distance from several tens of centimeters to several tens of meters and, therefore, has a problem that a reflected wave from the target may be reflected by a front case of the radar device and then reflected by the target again to be received as a secondary echo by itself. To solve this problem, it is an object of the present invention to provide a radar device again that can prevent multi-reflection to accurately measure a distance to a target in a short range. In a radar device according to the present invention, a surface of a frame body provided around a transmitting antenna and a receiving antenna is shaped so that a reflected wave from a target may not be returned in a direction in which a transmitting wave is transmitted from the transmitting antenna.

The invention provides a danger early warning method based on rapid calculation of the distance between a point and an area on a plane, a medium and equipment, and belongs to the technical field of cloud computing. The method comprises the following steps: firstly, outwards expanding a space with a specified threshold size for all areas; secondly, the minimum circumcircle is calculated for each expanded area, and the position of the circle center and the radius length are obtained; then, when the shortest distance between the target point and the multiple areas is calculated to be smaller than a threshold value or not, the distance between the target point and the circle center of all the minimum circumcircle can be compared firstly, and if the distance is larger than the radius of the minimum circumcircle, whether the target point is in the expanded area or not does not need to be calculated; and then, calculating whether the target point is in the expanded region or not to judge whether the distance between the target point and the region before expansion is smaller than a threshold value or not. According to the method, the complex calculation overhead is saved, and the calculation overhead can be further reduced by combining the information of the administrative region where the minimum circumcircle is located.

The application discloses a wire cutting machining method and device. The wire cutting machining method comprises the following steps: acquiring a current machining position of a workpiece to be machined, determining a geometric feature of the workpiece to be machined corresponding to the current machining position, wherein the geometric feature comprises a straight line feature and a circular arc feature; determining a target discharge gap corresponding to a cutting metal wire according to the geometric feature, wherein the target discharge gap is used to represent the shortest distance between the surface of the workpiece to be machined and the outer surface of the cutting metal wire; obtaining a current cutting offset of the cutting metal wire according to the target discharge gap and the cross-sectional radius of the cutting metal wire, wherein the current cutting offset is equal to the sum of the target discharge gap and the cross-sectional radius; and controlling the cutting metal wire to perform cutting machining according to the current cutting offset. The wire cutting machining method can significantly improve the machining precision and machining efficiency of small structural parts.

The utility model discloses a container which comprises a container body, a first container door and a second container door, and a door slot is formed in the opposite end faces of the first container door and the second container door. A first box door lock rod is mounted on the first box door, and the number of the first box door lock rod is one; one or more second box door lock rods are mounted on the second box door; the distance between the first box door lock rod and the door slot is a first distance, the distance between the second box door lock rod with the shortest distance from the door slot and the door slot is a second distance, and the first distance is larger than the second distance. Only one first box door lock rod is installed on the first box door, the number of the lock rods is reduced, on one hand, the first box door lock rod is far away from a door slot and close to a door hinge, and therefore the opening degree of the box door is enlarged. On the other hand, the sealing performance of the box door is guaranteed through the second box door lock rod. According to the utility model, the number of the lock rods is reduced, and the box door is easier to open and close while the sealing performance of the box door is ensured.

The present invention addresses the problem of appropriately transmitting light. In a glass (10), when: the outer peripheral edge of the largest circle, centered on a center (P0) of the glass (10) and being contained within the range of an outer peripheral edge (10C) of the glass (10), is defined as a reference circumference (A0); a circumference, 5 mm away from the reference circumference (A0) inward in the radial direction, is defined as a first circumference (A1); the circumference of a circle, centered on the center (P0) of the glass (10) and having a radius that is half the distance between the reference circumference (A0) and the center (P0) of the glass (10), is defined as a second circumference (A2); a point on the first circumference (A1) is defined as a first point (P1); and a point having the shortest distance from the first point (P1) among the points on the second circumference (A2) is defined as a second point (P2), the maximum value of retardation is 20 nm or less in a straight line section (S) connecting from the first point (P1) to the second point (P2) in a straight line, the retardation does not monotonically decrease or monotonically increase from the first point (P1) toward the second point (P2), and there is a position where the retardation has an extreme value between the first point (P1) and the second point (P2).

A sidewall has a first decorative portion and a second decorative portion decorated with a plurality of ridges. The first decorative portion includes a first part extending along a first direction having a first angle with respect to the circumferential direction and a second part extending toward the second decorative portion along a second direction having a second angle with respect to the circumferential direction. The second angle is greater than the first angle. A shortest distance between the second part and the second decorative portion is a first distance. The first distance is greater than or equal to 0.5 mm and less than or equal to 3.0 mm. A shortest distance between the first part and the second decorative portion is larger than the first distance.

The invention relates to a method for operating a particle beam apparatus for imaging, processing and / or analysing an object. For example, the particle beam apparatus is embodied as an electron beam apparatus and / or an ion beam apparatus. The invention furthermore relates to a computer program product and to a system comprising a particle beam apparatus for carrying out the method. The method comprises providing first structure data and second structure data; determining a target arrangement for a first device; providing at least one movement path; modelling the movement path of the first device within the particle beam apparatus; carrying out a check to determine whether the modelling of the movement path has the result that at least one first surface arrangement of the first device and at least one second surface arrangement of the at least one second device, when carrying out a movement process, (i) have at least one common point or (ii) are at a shortest distance but do not have a common point, wherein the shortest distance is smaller than a predefinable minimum distance; and, depending on the result of the check, displaying a message, discarding a movement process, changing a speed of the movement process, aborting the movement process, switching the movement process to a further movement process and / or carrying out the movement process of the first device using a movement device for moving the first device.

The display substrate and display device provided by the present disclosure belong to the technical field of display technology, and can at least partially solve one of the existing technical problems. The display substrate of the present disclosure comprises a substrate substrate, and a plurality of sub-pixels arranged in an array on the substrate substrate; the adjacent sub-pixels have a spacing area; the spacing area comprises a first spacing area having a functional site and a second spacing area without a functional site; at least part of the functional site is provided with a functional part; the width of the first spacing area between adjacent two sub-pixels arranged in a first direction or a second direction is greater than the width of the second spacing area between adjacent two sub-pixels arranged in the same direction; wherein the width of the spacing area is equal to the shortest distance between the boundaries of the two sub-pixels corresponding to the spacing area.

The invention relates to a pyrotechnic current breaker (1) for severing a conductor (9), having a housing (2) which is equipped with a cutting piston (8) and an ignition unit (16) for driving the cutting piston (8). The conductor (9) passes through the housing (2), and when the igniter (18) is triggered, the cutting piston (8) severs a printed circuit board (12) from the conductor (9). According to the invention, at least one spacer (20), preferably three spacers (20), are provided between the cutting piston (8) and the conductor (9), said spacers having the shape of pins and lying on a circle (19), the center of which lies on the central axis (24) of the cutting piston (8). If the side of the spacers facing the printed circuit board (12) is angled such that the region (21) of each spacer (20) adjoining the central axis (24) has a shorter distance to the printed circuit board (12) than the region (23) facing away from the central axis (24), the spacers (20) are pushed towards the central axis (24) when the igniter is triggered such that the spacers can be received in a recess (22). Furthermore, the region (21) adjoining the central axis (24) is easily deformable such that changes in the distance between the cutting piston (8) and the conductor (9) due to temperature fluctuations are compensated for.

To provide an optical element which can be appropriately manufactured and is hardly deformed.SOLUTION: An optical device 10 includes a resin-made lens 30 having a cut surface 32A formed on an outer periphery 32, and a light-transmissive base material 20 supporting the lens 30 and having a Young modulus higher than that of the lens 30. The connecting portion 32A between the cut surface 32A of the lens 30 and the portion other than the cut surface 32C of the outer periphery 32 of the lens 30 has a shape including at least one of an edge shape, a chamfered shape, and a rounded shape, and the shortest distance 32A from the center of the lens 30 to the cut surface A2 is shorter than the shortest distance A1 from the center of the lens 30 to the portion other than the cut surface of the outer periphery 32 of the lens 30.SELECTED DRAWING: Figure 2

A computing system configured to: (1) render, via a graphical user interface (GUI) displayed by a client station, a three-dimensional view of a construction project using a three-dimensional model file that defines a set of meshes representing physical objects of the construction project, wherein each mesh comprises a set of triangular faces, and wherein the GUI includes a measurement tool for obtaining a shortest distance between a first mesh and a second mesh; (2) receive a request to obtain the shortest distance between the first mesh and the second mesh; (3) calculate a set of distances potentially comprising the shortest distance between the first mesh and the second mesh by first reducing one or both of: (i) the number of faces between which distances are calculated and (ii) the number of distances that are calculated; and (4) determine the shortest distance between the first mesh and the second mesh.

Optical fibers 3 have end faces 5 that are cut not perpendicularly but obliquely relative to the axial direction of the optical fibers 3, so that the distance between the end faces 5 facing each other varies in the circumferential direction of the optical fibers 3. First, a circumferential position (part A) having the shortest distance between the tip parts of the optical fibers 3 is specified. Next, a control unit continuously applies a voltage between a set predetermined set of electrodes 7a and 7b for a predetermined time (first discharge step). In this state, the optical fibers 3 are moved in the direction in which the optical fibers abut against each other. In this state, the control unit applies a voltage between the adjacent electrodes 7a, 7b, and 7c, and sequentially changes the combination of the electrodes at predetermined time intervals (second discharge step).

The invention discloses a long-endurance hydraulic power multi-rotor unmanned aerial vehicle, and relates to the field of long-endurance unmanned aerial vehicles, the long-endurance hydraulic power multi-rotor unmanned aerial vehicle comprises a vehicle body, a front arm rod is fixedly connected to the front end of the vehicle body, side arm rods are fixedly connected to the two sides of the vehicle body, a rear arm rod is fixedly connected to the rear end of the vehicle body, an inner cavity is formed in the rear arm rod, and a ventilation hole is formed in the top surface of the inner cavity; the unmanned aerial vehicle has the advantages that the unmanned aerial vehicle can be quickly braked, can be quickly stabilized after arriving at a target point, and can also be quickly decelerated in an emergency, so that the unmanned aerial vehicle can be suddenly dropped to a hovering state from a high-speed state within an extremely short distance and time, and the working efficiency and the flexibility of route planning are greatly improved; meanwhile, the anti-mistaken touch effect is achieved, the unmanned aerial vehicle is prevented from falling to the ground due to height loss, the control risk is reduced, the safety of the unmanned aerial vehicle is improved, the parallel pipelines can select circulation paths according to requirements, complex mechanisms do not need to participate in adjustment, and the control and material cost is reduced.

The present invention provides a coil device (1) having: a spool (20) having a winding core (21) for winding a conductor (41a); a core (50a) having a central leg (53a) inserted into a shaft hole in the winding core (21); and a housing (90) for accommodating the spool (20) on which the magnetic core (50a) is mounted. The middle leg (53a) has the following cross-sectional shape: when the middle leg (53a) is divided into an upper half (ML1) and a lower half (ML2) by a middle horizontal plane (P0), the cross-sectional area (CA2) of the lower half (ML2) is greater than the cross-sectional area (CA1) of the upper half (ML2). The middle horizontal plane (P0) is a horizontal plane with the midpoint (O) of the vertical line connecting the upper horizontal plane (P1) containing the upper end (E1) of the middle leg (53a) and the lower horizontal plane (P2) containing the lower end (E2) of the middle leg (53a) by the shortest distance.

The application discloses a multi-target registration method in double-station passive cross positioning. Firstly, the virtual coordinates of targets are calculated respectively according to all angle measurement information of the main station and the auxiliary station; secondly, corresponding angle measurement lines are constructed according to the calculated virtual coordinates; thirdly, the distances D between all angle measurement lines of the auxiliary station and a certain angle measurement line of the main station are calculated, and the distance straight lines are determined; then, the intersection points of each distance straight line and the current angle measurement line and the distances SC between the intersection points and the main station are calculated; finally, the D / SC formed by the current angle measurement line of the main station and all angle measurement lines of the auxiliary station are calculated, and the minimum value of the D / SC is searched, and the angle measurement of the main station and the angle measurement of the auxiliary station corresponding to the minimum value are the angles of the same target relative to the two stations. The method realizes the information registration of the target by defining the opening angle of the shortest distance line segment between the angle measurement lines relative to the station, effectively improves the efficiency of the information registration, and has low complexity, so that the calculation time can be saved.

The invention relates to the technical field of sighting telescope polishing, and discloses a polishing device with a self-cleaning structure for sighting telescope machining, the polishing device comprises a polishing table and polishing equipment, and further comprises a self-adaptive assembly, a polishing frame is fixedly mounted at the top of the polishing table, a polishing hole is formed in the top of the polishing frame, and the polishing equipment is arranged on the rear side of the polishing table. Cleaning equipment is arranged on the front side of the polishing table; the self-adaption assembly comprises a cleaning frame, a push-pull groove, a push-pull rod, an adaption groove, an adaption frame, a fastening plate, a processing plate, an elastic telescopic plate and a rotating table, the processing plate and the fastening plate move rightwards for a short distance under the elastic force action of a second spring, the sighting telescope can be taken out by moving the fastening plate rightwards for a short distance, and the positioning reference of the push-pull rod and the fastening plate is stable; and the relative positions of the sighting telescope and the polishing equipment can be kept uniform, so that the problems of sighting telescope polishing inclination and the like caused by positioning deviation are solved, and the polishing effect of the sighting telescope is improved.

The utility model discloses a retention device for an NIP wheel of a cleaning machine, and belongs to the technical field of cleaning machines. Comprising a fixing rod and a supporting assembly. Wherein the fixing rod is used for connecting the two lower NIP wheels. The supporting assembly comprises a supporting part, two supporting plates are symmetrically arranged on the supporting part, two adjusting parts are symmetrically arranged on each supporting plate, the adjusting parts located on the different supporting plates are arranged in a mirror image mode, a supporting wheel is rotationally arranged on each adjusting part, and the adjusting parts are used for adjusting the positions of the supporting wheels. The shortest distance between the two supporting wheels located on the same side of the supporting plate is smaller than the diameter of the fixing rod, and the fixing rod is rotationally arranged on the supporting wheels. And further. And the fixing rod is integrally connected with the two lower NIP wheels, so that the stability and durability of connection are enhanced, and the risk of looseness caused by long-time operation of a traditional coupler is avoided. And by arranging the supporting assembly, the force in the middle position is effectively dispersed and relieved.

The application specifically relates to an interference measurement method, system, device and medium, the method comprising the following steps: S1: defining two interference components as component A and component B; S2: setting component B as a reference measurement component, and marking interference points formed by component A and component B on an interface; S3: marking a maximum interference point position of component A and component B as 5, marking a centroid position of component A as 6, and marking a centroid position of component B as 7; S4: connecting any two interference points, and the connecting line is an interference interface; S5: defining a direction away from the centroid point of component A as an interference direction according to a normal line of the interference interface; S6: picking up and measuring maximum distances of each point on component A to the centroid of component A according to the interference direction, and obtaining the maximum interference point 5; and S7: measuring a shortest distance h of the maximum interference point 5 to the interference interface, wherein h is the sought interference amount. The main beneficial effect is to improve the quality and efficiency of interference checking work.

The present disclosure provides a correction method of sprocket synchronization, belonging to the technical field of mechanical transmission. The correction method comprises: selecting a reference surface, the reference surface is located at the center point of the addendum surface of the first sprocket tooth, and is outside the first sprocket tooth; adjusting the position of the second sprocket, so that the center point of the addendum surface of the second sprocket tooth is aligned with the center point of the addendum surface of the first sprocket tooth; detecting the first shortest distance from the reference surface to the third sprocket tooth; detecting the second shortest distance from the extension surface of the reference surface to the fourth sprocket tooth; correcting the first sprocket and the second sprocket according to the first shortest distance and the second shortest distance. The present disclosure can make the offset angle of the two sprockets meet the requirements.

The application relates to a robot and a collision detection method and a control device of a mechanical arm thereof. The robot comprises a first mechanical arm, a second mechanical arm and a control device configured to: based on structural features of the first and second mechanical arms, abstract and segment the first mechanical arm to form a first spatial line segment and abstract and segment the second mechanical arm to form a second spatial line segment; acquire a shortest distance between the first spatial line segment and the second spatial line segment; acquire a safety distance between the first spatial line segment and the second spatial line segment, the safety distance being configured based on a sum of a first inflation radius of the first spatial line segment and a second inflation radius of the second spatial line segment; compare the shortest distance with the safety distance, and determine whether a collision occurs between the first mechanical arm and the second mechanical arm based on a result obtained by comparison. Through the above implementation, the detection efficiency can be improved, and the collision between the mechanical arms can be avoided.

The invention provides a method for improving human shape animation detection performance, which comprises the following steps: S1, movement detection: detecting a moving object in a video stream, and outputting the position of the moving object, namely left upper and right lower coordinates; the method comprises the following steps: performing frame difference on two adjacent frames of pictures; s2, moving detection results are merged: in order to reduce the number of times of detection and the number of times of repeated detection, when two moving targets are assumed to be close to each other, the two moving frames are merged together, human shape detection is performed once, and human shape detection does not need to be performed by buckling each moving frame once; moreover, the combined movement detection is divided into two conditions: one condition is short distance, and the human-shaped target is within 3m; one is a long distance, and a human-shaped target is outside 3m; s3, image matting: for the maximum width and height value of the detected image, zooming the deducted image to 256 according to the long side, and zooming the short side in an equal ratio; and S4, performing human shape detection: performing human shape detection on the deducted moving picture. Under the condition that the model is not compressed, the human shape dynamic detection performance is reduced, and the detection efficiency is improved.

A coil component includes a body including a first side surface and a second side surface opposing each other in a first direction, and a third side surface and a fourth side surface opposing each other in a second direction, the body including a magnetic material, a coil disposed in the body, the coil forming at least one turn, and a lead frame connected to both ends of the coil in the body, the lead frame disposed on the first side surface and the second side surface of the body. When a shortest distance between the coil and the third side surface of the body is denoted by My and a length of the body in the second direction is denoted by W, My / W satisfies 0 or more and 0.1 or less.

This meta-optical element comprises: a support substrate having a first surface; and a pattern layer provided on the first surface and including a plurality of pillars protruding in the thickness direction of the support substrate from the first surface. A pillar height C of the pillars is 2.0 μm or more. When a cross section orthogonal to the height direction of the pillars at a position where the pillar height of the pillars from the first surface is 0.9 C is observed, the distance of an area passing through the center of gravity of the cross section and having the shortest distance in the cross section is defined as a distance A, and when a cross section orthogonal to the height direction of the pillars at a position where the pillar height of the pillars from the first surface is 0.1 C is observed, the distance of an area passing through the center of gravity of the cross section and having the shortest distance in the cross section is defined as a distance B. In this case, an aspect ratio represented by "C / ((A+B) / 2)" is 5.0 or more.

An information processing apparatus identifies a pair of second vertices corresponding to second qubits in which errors are detected through syndrome measurement, the pair being determined to be at a short distance based on a first determination criterion as to whether the distance between the second vertices is long or short. The information processing apparatus determines, based on first weights of first edges included in a path connecting the pair in a first decode graph, a second weight for a second edge connecting the paired second vertices. The information processing apparatus generates a second decode graph that includes the paired second vertices and a second edge connecting the paired second vertices, the second edge being assigned the second weight. Then, the information processing apparatus estimates a third qubit in which an error has occurred, based on the second weight of the second edge in the second decode graph.

1. The name of the design product: short distance transport machine. 2. The use of the design product: the design is used for carrying and transporting articles. 3. The design points of the design product: the combination of shape and pattern. 4. The picture or photo that best shows the design points: perspective view 2.

A toner processing apparatus processing an object comprising toner particles, comprising a processing chamber having a drive shaft rotatably provided at the bottom of chamber; a rotating member and a flow means pivotally supported by the drive shaft, wherein the rotating member comprises a main portion, and a processing portion protruding outward in the radial direction comprising a plate-shaped processing surface that collides with the object, and a rear wing coupled to the upstream side of the plate-shaped processing surface in a rotation direction; the plate-shaped processing surface protrudes upward from the rear wing; the plate-shaped processing surface away from the main portion is on the downstream side in the rotation direction of the rotating member; and where a radius of inner circumference of processing chamber is denoted by d, the shortest distance between inner wall of processing chamber and plate-shaped processing surface is 0.100d or less.

This invention provides a ship navigation early warning method, device, medium, and product based on a potential field. The method includes: acquiring ship status, a set of static obstacles, a set of navigation rules, and information on environmental disturbances and uncertainties; performing dimensionless scaling and risk mapping normalization on the information; obtaining the static environmental potential field of the ship at the current trajectory point based on the difference between the shortest distance from the trajectory point to the set of static obstacles and the safety margin; constructing a dynamic interactive potential field based on the target ship's status and the urgency of its relative motion; triggering navigation rules and generating rule constraints based on the encounter state identification results to construct a rule-constrained potential field; expanding and correcting the safety margin based on uncertainty information to construct an uncertainty-corrected potential field; fusing these elements to obtain the total potential field; and obtaining a risk index and early warning level based on the total potential field. This technical solution achieves risk early warning based on a computable multidimensional safety potential field, improving compliance, stability, and robustness in complex waters and under multi-ship encounter conditions.

The utility model discloses a side hair trimming cutter, which comprises a moving cutter, a static cutter and an eccentric wheel, the eccentric wheel is connected with the moving cutter, the moving cutter is provided with a plurality of moving cutter teeth at intervals, the static cutter is provided with a plurality of static cutter teeth at intervals, the eccentric wheel has an eccentricity C, and the shortest distance between the moving cutter teeth on one side edge of the moving cutter and the static cutter teeth on the same side edge of the static cutter is B, wherein C is greater than or equal to B.

In a vibration wave radiating device, when a distance between a connection portion and a reflecting plane portion in a direction orthogonal to the reflecting plane portion is TD, an angle defined by a virtual line parallel to the reflecting plane portion and a back surface of a vibrating portion in a longitudinal section is θ, a shortest distance between a peripheral edge of the back surface at an end of the vibrating portion opposite to the connection portion and a peripheral edge of the reflecting plane portion is L, and a wavelength of a vibration wave emitted from the vibrating portion is λ, a relationship indicated by 0.78λ≤L≤1.19λ or 1.5λ≤L≤2.14λ is satisfied when TD=0 and 35°≤θ≤55°.

An endoscope with an articulated bending section body (1) including a number of segments (4) where at least one hinge member (5) is provided between any adjacent segment (4). Each segment (4) has a first surface (9, 9″) and a second surface (10, 10′) delimited by an outer rim. The first surface (9, 9″) includes a first abutment part (11) adapted to abut the first opposing surface (10, 11) of an adjacent segment, wherein the first abutment part (11) is at a distance from the at least one hinge member (5) that is shorter than the shortest distance from the at least one hinge member (5) to the most remote part of the rim.