27results about How to "Avoid Inaccurate Positioning" patented technology

The invention discloses an image-to-video cross-modal adversarial sample generation method based on key frame identification. The method comprises the following steps: acquiring a video frame sequence; obtaining a key video clip through a sliding window strategy and the contribution degree of the video clip; selecting a key frame from the key video clip based on an optical flow method; forming a key frame set by all key frames in the key video clip; generating a corresponding confrontation sample for each key frame in the key frame set; and replacing the corresponding key frame in the video frame sequence X with the confrontation sample to obtain a confrontation video sequence of the video frame sequence X. By improving a key frame extraction method and an adversarial disturbance generation technology, the defects that in the prior art, key frame positioning is inaccurate, time sequence information is not fully considered during key frame extraction, and the robustness of a disturbance generation method is poor are effectively overcome, the accuracy and robustness of video adversarial attacks can be remarkably improved, and the robustness of video adversarial attacks is improved. And the requirements in practical application can be better met.

The invention belongs to the technical field of coal mining machine cutting pick holder welding equipment, and particularly relates to a coal mining machine roller cutting pick holder welding positioning device which comprises a supporting plate, the bottom end of the supporting plate is fixedly connected with a fixing frame, and the bottom end of the fixing frame is fixedly connected with a lifting mechanism. According to the welding and positioning device for the cutting pick holder of the coal cutter roller, the function of automatically and accurately positioning the welding angle is achieved when the cutting pick holder and the coal cutter roller are welded, and the welding and positioning device for the cutting pick holder of the coal cutter roller further has the height adjusting function, so that the convenience and efficiency of welding and mounting of the cutting pick holder and the coal cutter roller can be improved, and the labor intensity of welding personnel is reduced; in addition, the coal cutter roller cutting tooth seat welding positioning device further has the functions of continuously cooling a welding area and purifying welding smoke dust, welding angle positioning deformation of the cutting tooth sleeve can be effectively prevented through continuous cooling of the welding area, the welding quality can be improved, and the using reliability and the environmental protection performance of the device can be improved.

The invention provides a high-pressure-resistant constant-pressure one-way valve clamping device for an automobile, and relates to the technical field of one-way valve production clamping. The supporting part is arranged on the supporting base; the outer clamping part is arranged on the supporting part so as to fix the valve body; the placing part is connected with the outer clamping part through a connecting part and is matched with the outer clamping part so as to safely clamp the valve body; and the inner clamping part is arranged on the supporting base so as to fix and position the valve body from the inside. By arranging the first driving part, the clamping parts on the first rack and the second rack are finally driven to clamp the valve body; pressure is applied to the valve body in all directions, so that stable clamping is guaranteed, it can be guaranteed that the valve body is located in the center of the containing part, and inaccurate positioning during machining is avoided; and meanwhile, the inner clamping part is arranged, and the placing part moves downwards to drive the inner clamping part to work, so that the valve body can be clamped internally and externally, and the clamping stability is improved.

A polishing and grinding device for finish machining of a valve body of a pneumatic valve of a nitrogen making machine relates to the technical field of grinding and polishing devices and comprises a polishing and grinding workbench, the polishing and grinding workbench is a horizontally-arranged square table, and a lifting feeding and discharging assembly, an overturning clamping assembly and a two-face polishing and grinding assembly are arranged on the polishing and grinding workbench; a sliding installation opening extending transversely is formed in the middle of the upper surface of the polishing and grinding workbench, two transversely-symmetrical limiting clamping grooves are formed in each longitudinal outer end face of the polishing and grinding workbench, and an installation groove is formed between every two transversely-opposite limiting clamping grooves. According to the invention, the problems of single polishing and grinding mode, poor polishing and grinding adaptability to different parts, poor polishing and grinding adjustability, poor clamping adaptability, inconvenience in feeding and discharging transfer and the like existing in the fine machining and polishing and grinding process of the valve body of the pneumatic valve of the nitrogen making machine in the grinding and polishing equipment in the traditional technology are solved.

The present invention belongs to the field of plasma cutting technology, and in particular to a millimeter wave therapeutic device plasma cutting device and method, comprising a base and a workbench fixed on the surface of the base, wherein a fixing component is installed inside the workbench. The device is provided with a fixing component, which can press and fix the four corners of the surface of the millimeter wave therapeutic device shell to ensure that the millimeter wave therapeutic device shell will not be displaced during the cutting process, and can provide stable supporting force from multiple directions, thereby avoiding processing errors caused by unstable position, ensuring the accuracy and consistency of the cutting lines, and preventing quality problems such as uneven cutting surface and dimensional deviation caused by shell shaking, which helps to improve the qualified rate and overall quality of the product. In addition, the whole process does not require human intervention and has a high degree of automation, which greatly improves the accuracy and timeliness of the operation, effectively avoids the problem of inaccurate positioning caused by human judgment delays or errors, and provides a strong guarantee for high-precision processing.

The utility model discloses a piping flange welding auxiliary device, and belongs to the technical field of ship tools. According to the technical scheme, the piping flange plate welding auxiliary device comprises a rotating tool assembly and a supporting assembly, the rotating tool assembly is installed on the top face of the supporting assembly, the rotating tool assembly is rotationally connected with the supporting assembly, the rotating tool assembly comprises a centering structure, and the centering structure is located on a rotating shaft of the rotating tool assembly; the rotating tool assembly is of an integrated structure, and the supporting assembly is of an integrated structure. The welding tool has the advantages that a flange plate is firstly placed on the top face of the rotating tool assembly, then a steel pipe is arranged above the rotating tool assembly in a sleeved mode, namely the top face of the flange plate and the bottom face of the steel pipe make contact with the top face of the flange plate, then welding is conducted, the rotating tool assembly is rotated in the welding process, accurate positioning can be kept, the structure is simple, positioning is accurate, and operation is easy and convenient; welding seams are attractive, and time and space are effectively saved.

The invention provides a heart current source positioning method, which comprises the following steps of: acquiring magnetocardiogram data of a target user, and performing contour reconstruction on a target contour region in a heart general model by using the magnetocardiogram data to acquire a personalized heart model; subdividing the personalized heart model to obtain a plurality of tetrahedrons, and selecting an optimal tetrahedron from the plurality of tetrahedrons according to the personalized heart model and the effective magnetocardiogram data; performing multiple rounds of first finite subdivision on the preferred tetrahedron, and when each round of first finite subdivision is finished, determining whether a preferred sub-tetrahedron obtained by the round of first finite subdivision meets a first subdivision stop condition; and if the first subdivision stop condition is met, determining the final current source position according to the central point position of the optimal sub-tetrahedron obtained by the first finite subdivision of the round. By adopting the positioning method of the heart current source, the problems of low positioning efficiency and low positioning accuracy in the positioning process of the existing heart current source are solved.

The present invention provides a lip brick grinding processing equipment for rolled glass, comprising: a mounting unit; a detection unit, the detection unit is arranged on the upper part of the mounting unit; a grinding processing unit, the grinding processing unit is arranged on the side of the detection unit for grinding the lip brick after the detection unit is detected; the mounting unit includes a calibration component for transitioning the detection unit from the outside of the lip brick to the upper surface of the lip brick. The detection rod drives the suspension plate to move downward along the lifting cavity, and the suspension plate drives the detection platform to move downward through the linkage frame. If the rolling ball passes through a deeper depression during the subsequent movement, the detection rod will continue to push the suspension plate downward once, and the suspension plate that has been pushed downward will not rise as the subsequent detection rod moves upward, thereby achieving the effect of being able to detect and record the lowest point of the depression of the two lip bricks.

The invention discloses a data processing method and device and electronic equipment, and belongs to the technical field of computers.The method comprises the steps that a navigation request is obtained under the condition that the method is in communication connection with a vehicle and the vehicle is located in an indoor parking lot, and the navigation request comprises a navigation destination; based on the navigation request, obtaining scanning fingerprint information obtained by scanning in the moving process of the vehicle; according to the scanning position fingerprint information and exit position fingerprint information corresponding to each parking lot exit of the indoor parking lot, determining a first parking lot exit where the vehicle is driven out of the indoor parking lot; and displaying at least one navigation route from the first parking lot exit to the navigation destination.

The utility model provides a stokehole positioning device and a stokehole positioning system. The stokehole positioning device comprises a control mechanism, a transmission mechanism and a telescopic adjusting mechanism, the control mechanism is used for receiving adjustment parameters and outputting control signals according to the adjustment parameters, so that the transmission mechanism operates according to the control signals; the transmission mechanism is connected with one end of the telescopic adjusting mechanism and controls the telescopic adjusting mechanism to do telescopic motion. A positioning piece is arranged at the end, away from the transmission mechanism, of the telescopic adjusting mechanism and used for abutting against a product. After the control mechanism receives the adjusting parameters used for adjusting the position of the glass, the transmission mechanism is controlled to act to drive the telescopic adjusting mechanism to do telescopic motion, so that the distance between the positioning piece and the heating furnace is adjusted, the position of the glass in the heating furnace is adjusted, the problem that positioning is inaccurate due to the fact that the glass is positioned in a naked eye observation mode is solved, and the positioning accuracy is improved. And the product quality and the production efficiency are improved.

The utility model relates to the technical field of fryer pressing baskets, and discloses a fryer pressing basket mechanism without central positioning, a pressing frame assembly is arranged on a square tube frame, and the pressing frame assembly comprises a pressing frame air cylinder, an upper connecting rod and a lower connecting rod. The output end of the frame pressing cylinder is connected with the frame pressing upper connecting rod, and the bottom of the frame pressing cylinder is provided with an upper disc. A guide sliding sleeve is arranged on the frame, and a pressing frame lower connecting rod is inserted. A lower disc is arranged at the top end of the lower connecting rod; an assembly seat is arranged at the bottom end; through driving of the frame pressing air cylinder, stable pressing of the frying basket is achieved, the problem that a traditional basket pressing mechanism is inaccurate in center positioning is solved, and the equipment reliability and the frying effect are improved. The design of the upper disc and the lower disc is adopted, the upper disc and the lower disc are tightly attached when the pressing frame air cylinder drives, the mechanism structure is simplified, the stability and reliability of the pressing frame are improved, and the product quality problem caused by clamping or eccentricity of the linkage shaft is avoided. The scheme does not need central positioning, has the advantages of simple structure, high stability, good reliability and the like, can effectively improve the production efficiency and the product quality of the fryer, and has practical value and market prospect.

The utility model discloses a vertical cast-in-place component template root positioning and fixing structure. The vertical cast-in-place component template root positioning and fixing structure comprises a positioning and fixing device, a fixing nail, a reinforced concrete floor, a template and a split bolt, wherein the positioning and fixing device is fixedly mounted on a reinforced concrete floor through fixing nails; the bottom of the template is mounted on the positioning and fixing device; and the middle parts of the templates are connected through split bolts. The positioning and fixing device is fixed to the reinforced concrete floor through the fixing nails, the construction mode is simple, the construction efficiency is improved, the situation of inaccurate positioning is avoided, generally, the fixing nails cannot damage the length of an electromechanical wire pipe pre-buried in floor concrete, and the construction cost is reduced. The damage to the electromechanical wire pipe embedded in the floor concrete can be avoided, and the construction quality is ensured.

The invention relates to the technical field of vehicle control, and provides a vehicle key positioning method and device, electronic equipment and a vehicle. The method comprises the following steps: in response to determining that a key is connected with at least two antennas arranged on a vehicle, obtaining the receiving duration of a communication signal transmitted by the key received by each antenna; and determining a transmitting angle of the key relative to each antenna according to the receiving duration, and determining a target position of the key relative to the vehicle based on at least two transmitting angles. Thus, the target position of the key relative to the vehicle is the accurate position determined based on the emission angles of the key relative to the at least two antennas, the target position of the key relative to the vehicle is more accurate than the estimated key position, the problem of inaccurate key positioning can be avoided, and accurate implementation of the key function is ensured.

The utility model discloses a car door lock welding positioning tool which comprises a bottom plate, a positioning pin and a positioning block, the bottom plate is provided with a positioning face tightly attached to the outer side face of a door frame sealing beam, positioning holes are formed in the positioning face, the positioning holes correspond to at least two via holes of the door frame sealing beam, and the positioning pin is arranged on the positioning face. The positioning holes penetrate through the two sides of the bottom plate; the positioning pin is arranged in the positioning hole and the via hole corresponding to the positioning hole; the positioning block is arranged on one side of the bottom plate, and the other end of the positioning block is fixed to the side wall of the door frame sealing beam. The door lock check block nut plate solves the technical problems that when an existing door lock check block nut plate is welded to a door frame sealing beam, only a door frame sealing beam via hole is used as the reference, positioning is inaccurate, and consequently a vehicle door is opened heavily and rebounds frequently.

The utility model discloses a mould for forming a calabash-shaped mould, which comprises a bottom plate, and a support component for supporting a mould core is arranged on the bottom plate; a material pressing assembly used for pressing materials is arranged at the top of the supporting assembly, a forming mold core assembly used for manufacturing the rubber mold is arranged on the bottom plate and the material pressing assembly, the forming mold core assembly comprises an upper plate mold core and a lower plate mold core, the upper plate mold core is fixedly connected with the material pressing assembly, and the lower plate mold core is fixedly connected with the bottom plate. And the end parts of the upper plate mold core and the lower plate mold core are butted. During demolding, the upper plate mold core is firstly separated from a rubber product, the demolding length is shortened, so that the bearing capacity of the mold core is enhanced, the probability of bending in the demolding process is reduced, the upper plate mold core can be firstly removed during demolding, and then the rubber product is moved to be separated from the lower plate mold core, so that the demolding operation can be more easily carried out; through the matching effect of the matching structure, the abrasion degree is reduced, and the problem of inaccurate positioning caused by rapid abrasion of the mold is solved.

The utility model discloses a fixing device for positioning a water stop steel plate, and relates to the technical field of water stop steel plate installation. According to the technical scheme, the water stop steel plate comprises a mounting plate, a transverse and longitudinal adjustment integrated assembly is detachably connected to the mounting plate, a clamping assembly is connected to the transverse and longitudinal adjustment integrated assembly, and a water stop steel plate body is clamped to the clamping assembly. The water stop steel plate has the advantages that the clamping assembly and the water stop steel plate body can be transversely and longitudinally adjusted through the transverse and longitudinal adjusting integrated assembly, so that the water stop steel plate body is more accurately positioned, and the practicability is higher.

The application relates to the technical field of self-moving device positioning, and discloses a self-moving device position correction method and device, a self-moving device and a medium, the method comprising: acquiring a working map; the working map comprising initial positioning information of a base station; calculating an offset of the base station according to current positioning information of the base station and the initial positioning information; and when the offset is not greater than a preset threshold, correcting position information of the self-moving device in the working map by using the offset. In the foregoing manner, when the offset of the base station before and after the position change is not greater than the threshold, the position coordinates of the self-moving device are adaptively adjusted by using the offset, the phenomenon of inaccurate positioning of the self-moving device can be avoided after the position of the base station is moved without reconstructing the map, the accuracy of positioning of the self-moving device in the navigation process is ensured, and the application range of the self-moving device is widened.

The invention discloses a power distribution network fault positioning method based on intelligent monitoring terminal topology, and belongs to the technical field of power distribution network fault positioning. The method is characterized by comprising the following steps: step 1, an intelligent monitoring terminal constructs a unified information model; 2, the intelligent monitoring terminal completes an equipment registration process; 3, the master station automatically constructs a topology model reflecting the actual connection relation of the intelligent monitoring terminal; step 4, when a fault occurs, the intelligent monitoring terminal actively reports fault information to the master station; and step 5, the master station determines a fault section. In the power distribution network fault positioning method based on the topology of the intelligent monitoring terminal, the fault section in the power distribution network is judged based on the topology network of the intelligent monitoring terminal, so that the problem that the fault positioning of the power distribution network in the prior art is highly dependent on the primary topology information of the power distribution network line and the switch state of the feeder line is solved. The circuit topology configuration is tedious, the change is frequent, and the main station cannot be updated in time, so that the positioning is inaccurate.

The utility model discloses a geotextile tube bag paving construction system which comprises four positioning vertical rods, a traction steel wire rope, a rope body guiding assembly, a rope body driving assembly and a traction paving assembly, two of the positioning vertical rods are located on the two sides of the front end of a position where a geotextile tube bag is to be paved, and the traction steel wire rope is located on the rope body guiding assembly. The other two positioning vertical rods are located on the two sides of the rear end of the to-be-laid position of the geotextile tube bag, each positioning vertical rod is provided with at least two sets of rope body guiding assemblies, and the positioning vertical rod located at the rear end of the to-be-laid position of the geotextile tube bag is further provided with a rope body driving assembly. The number of the traction steel wire ropes is two, and the two traction steel wire ropes are arranged on the two sides of the to-be-laid position of the geotextile pipe bag correspondingly. The traction paving assembly is correspondingly arranged between the two traction steel wire ropes, is fixed to the front end of the geotextile tube bag and is driven by the traction steel wire ropes to pave the geotextile tube bag in place. The pipe bag paving device is simple in structure and ingenious in design, the labor intensity of pipe bag paving is greatly reduced, and the construction quality of geotextile pipe bags is improved.

The application provides a positioning and suturing mechanism for meniscus suturing, which comprises a grabbing mechanism, an adjusting mechanism and a limiting mechanism, the adjusting mechanism is arranged on one side of the top end of the grabbing mechanism, the limiting mechanism is arranged on the other side of the top end of the grabbing mechanism, the inside of the adjusting mechanism is provided with a suturing needle structure, and the top end of the limiting mechanism is provided with a positioning mechanism; the suturing needle structure comprises a rotating sleeve, a suturing needle, an extension sleeve, a first extension rod and a second extension rod, the rotating sleeve is movably inserted into the inside of the adjusting mechanism, the suturing needle is movably installed in the inside of the rotating sleeve, the extension sleeve is fixedly installed on the two sides of the surface of the rotating sleeve, the first extension rod is movably installed on the outer end of the extension sleeve, and the second extension rod is movably installed on the outer end of the first extension rod. The device can be adjusted according to the meniscus shape of different patients and accurately position the position to be sutured.

The utility model relates to a portal jib crane amplitude-variable mechanism Beidou positioning detection device, include: main machine, main antenna and from antenna, main antenna and from antenna are connected through a root feeder main machine respectively, main antenna and from antenna are installed in the both sides of mounting support respectively, mounting support is installed on the protective fence of portal jib crane through the connecting support, the protective fence is set up horizontally, the protective fence and mounting support are fixed in the multiple adjustable hole positions on connecting support. The utility model has the beneficial effects that the high-precision positioning directional function of Beidou positioning main machine is utilized, in combination with the setting of double antenna of main antenna and from antenna, the positioning data of gate machine amplitude-variable mechanism can be accurately obtained, and the accuracy and reliability of positioning data are ensured, through the adjustable hole position design on the connecting support, the position and angle of main antenna and from antenna can be conveniently adjusted, and it is ensured that they are fixed in the same plane, same height.

The utility model relates to an aviation aircraft engine fairing shock pad vulcanization mold which comprises an upper mold, a middle mold and a lower mold, the middle mold is arranged on the lower mold, the upper mold is arranged on the middle mold, a base groove is formed in the upper surface of the lower mold, a glue injection cavity is formed in the position, corresponding to the center of the base groove, of the middle mold, and a lock catch support groove extending downwards is formed in the center of the base groove of the lower mold. A lock catch support is arranged in the lock catch support groove, the lower end of the lock catch support is fixed in the lock catch support groove, the upper end of the lock catch support extends into the glue injection cavity of the middle mold, the lock catch support is hollow, a lock catch positioner is arranged in the lock catch support cavity, a lock catch cover plate is arranged at the upper end of the lock catch positioner, and the upper surface of the lock catch cover plate is flush with the upper surface of the middle mold. The position of the metal lock catch and the position of the metal lock catch base can be fixed, inaccurate positioning is avoided, the product percent of pass is improved, the metal lock catch can be prevented from deflecting relative to the lock catch positioner in the vulcanization process, and the middle mold and the lower mold cannot move relatively in the vulcanization process.

The invention discloses a multi-axis linkage mechanical clamp, belongs to the technical field of clamp devices, and can drive a product to turn over, so that the front and back surfaces of the product can be machined by clamping the product once. Comprising a lifting mechanism, a first bearing plate, a first translation mechanism, a first sliding plate, a second translation mechanism, a second sliding plate, an overturning assembly and clamping equipment, the first bearing plate is installed on the lifting mechanism, and the lifting mechanism is used for driving the first bearing plate to move in the first direction; the first translation mechanism is arranged on the first bearing plate; the first sliding plate is mounted on the first translation mechanism, and the first translation mechanism is used for driving the first sliding plate to translate in the second direction; the second translation mechanism is arranged on the first sliding plate; the second sliding plate is mounted on the second translation mechanism; the second translation mechanism is used for driving the second sliding plate to translate in the third direction; the overturning assembly is arranged on the second sliding plate; the clamping device is installed on the overturning assembly used for driving the clamping device to rotate around the first axis.

The present invention provides a high-pressure resistant and balanced pressure check valve clamping device for automobiles, which relates to the field of check valve production clamping technology, including: a support base, a valve body; further including: a support portion, which is arranged on the support base; an external clamping portion, which is arranged on the support portion to fix the valve body; a placement portion, which is connected to the external clamping portion through a connecting portion and cooperates with the external clamping portion to safely clamp the valve body; an internal clamping portion, which is arranged on the support base to fix and position the valve body from the inside. The present invention is provided with a first driving member, which ultimately drives the clamping members on the first rack and the second rack to clamp the valve body; applying pressure to the valve body in various directions can ensure stable clamping and ensure that the valve body is in the center of the placement portion to avoid inaccurate positioning during processing; at the same time, an internal clamping portion is provided, and the internal clamping portion is driven to work by the downward movement of the placement portion, so that the valve body can be double-clamped inside and outside, providing clamping stability.

The application discloses a network security vulnerability detection method and system based on cloud security, comprising the following steps: generating a cloud security standard data set; performing heterogeneous hypergraph topology shaping to generate a cloud resource security relationship graph; generating a cloud resource vulnerability feature set; determining the cloud resources and the cloud resource association relationship corresponding to each vulnerability feature to generate a cloud security vulnerability candidate set; performing task collaborative reasoning by using an improved MTLPT model to generate a cloud security vulnerability recognition result; performing cascade instability deduction to generate a cloud security vulnerability association result; calculating a vulnerability risk value and determining a vulnerability risk level to generate a network security vulnerability detection result, and the application improves the accuracy and integrity of network security vulnerability recognition, cloud resource positioning, propagation path analysis and risk classification in a cloud environment.

The utility model discloses a displacement adjusting mechanism for robot welding, and relates to the technical field of robots. The device comprises a workbench, and the top of the workbench is fixedly connected with a protective shell; an adjusting assembly is arranged in the protective shell and comprises a transmission motor, a rotating rod is movably connected to the interior of the protective shell, a supporting plate is fixedly connected to the top of the rotating rod, vertical plates are fixedly connected to the two sides of the top of the supporting plate, clamping devices are arranged on one sides of the vertical plates, and a transmission part is arranged at the output end of the transmission motor. According to the welding position adjusting device, the transmission motor works to drive the transmission rod to rotate so as to drive the transmission gear to rotate, so that the driven gear drives the rotating rod to rotate, and the purpose of adjusting the welding position of a workpiece can be achieved in cooperation with the arrangement of the driving motor and the driving rod; the influence of electromagnetic interference on the positioning sensor can be reduced, and the accuracy and stability of the sensor are improved.

The application discloses a sound source positioning method, device and equipment and a computer readable storage medium. The sound source positioning method comprises the following steps: collecting a scene image and an audio signal in an environment, and detecting all human body images included in the scene image; determining a current position corresponding to each human body image, and determining a sound source angle of the audio signal; detecting a target position matched with the sound source angle in all the current positions, and outputting a human body image corresponding to the target position. The application improves the accuracy of sound source positioning.