64results about How to "Avoid biased situations" patented technology

The invention discloses a complex terrain wind field simulation method and device based on WRF and Fluent coupling. Coarse resolution wind field data of a CFD three-dimensional complex terrain model is simulated through a WRF (Weather Research and Forecasting Model), a WRF wind field mesh model is established, wind field data calculated by the WRF wind field mesh model is processed, and a distancereciprocal weighting method or a three-point coplanar linear interpolation method is used to interpolate to obtain five boundary surface wind field data of the CFD three-dimensional complex terrain model. Compared with a calculation method of curve fitting, the complex terrain wind field simulation method and device are simpler and more direct, avoid large deviation of the curve fitting when thewind speed fluctuates greatly, and solve the technical problem of low accuracy of the existing complex terrain wind field simulation method.

The invention discloses an intelligent mold. The intelligent mold comprises a mold head, an opening mold and a first mold core which are concentrically arranged, wherein the first mold core and the opening mold form a first flow channel; the mold head is provided with a plurality of displacement sensors and is internally provided with an eccentric adjusting mechanism which is used for adjusting the eccentricity of the opening mold and is connected with the opening mold; the eccentric adjusting mechanism is connected with the displacement sensors; and the eccentric adjusting mechanism and a second mold core arranged in the mold form a second flow channel. The intelligent mold disclosed by the invention has the advantages that the problem that a manual method is used for measuring the thicknesses of all directions of the section of a pipe by using a caliper is solved, so that the loss of raw materials in production preparation is greatly reduced and the effect of lowering the energy consumption is achieved.

The invention discloses a target tracking method based on local features and a scale pool, belongs to the technical field of grayscale image target tracking, and solves the problem of poor target tracking algorithm accuracy in complex environments such as illumination change, scale change and background interference. The method comprises the steps of a first frame image obtaining a target according to initial information, training a classifier on the basis of two features of the target, obtaining and then initializing a target model and a classifier regression coefficient, a second frame imageobtaining targets of different scales through a scale pool, and extracting a first feature and a second feature; based on the initialized target model and the classifier regression coefficient, obtaining a multi-layer kernel correlation filtering response graph of the two features; and performing linear interpolation to the same size, performing weighted fusion to obtain a multi-layer kernel correlation filtering response graph, further obtaining a prediction position and a prediction scale of the target, namely finishing one-time target tracking, and if the tracking is not finished, realizing tracking from the second frame of image to the third frame of image until the tracking is circulated to the last frame of image. The method is used for target tracking.

The invention provides automatic stripping and laser drilling equipment for an LCP flexible circuit board, and belongs to the technical field of circuit board machining. The laser drilling equipment for the LCP flexible circuit board comprises a base, a fixing assembly and a laser drilling assembly. The fixing assembly comprises a lifting piece, a sliding table, an electric push rod and a clamping piece. The sliding table is driven by the lifting piece to descend, in the descending process, a jacking column moves along with the sliding table, when a supporting roller at the lower end of the jacking column makes contact with a supporting guide rail at the upper part of a supporting column, the supporting guide rail generates supporting force on the supporting roller and the jacking column, and along with downward movement of the sliding table, the jacking column jacks a stripping plate upwards, the drilled LCP flexible circuit board on the sliding table is ejected through the stripping plate, stripping of the LCP flexible circuit board is achieved, manual stripping is not needed, and the production efficiency is greatly improved.

The invention relates to the technical field of robot welding, specifically to a robot welding device for a movable arm plate of a loading machine. The robot welding device comprises a robot welding mechanism and a rotating frame; the rotating frame comprises a rotating motor, a horizontally arranged rotating shaft, a plurality of work supporting plates and two cross fixed frames; rotating column heads are fixedly mounted at the midpoints of the two ends of each work supporting plate; bearing seats are rotatably mounted at the two ends of the rotating shaft; fixed gears are arranged on the opposite sides of the two bearing seats; rotating gears are fixedly mounted on the rotating column heads; the robot welding mechanism comprises a limiting mechanism and a plurality of robots; and a clamping and welding mechanism is mounted at the output end of each robot. In the processes of feeding, discharging and welding, the movable arm plate is always located over a mounting table, so that the problem that the fixed movable arm plate faces downwards when being overturned to the other side of the rotating frame is solved; and welding is performed in the clamping process, so that the flange plate positioning accuracy is improved.

The invention relates to the technical field of water quality detection kits, and particularly relates to a luminous bacterium freeze-dried powder kit and a preparation method thereof. The preparationmethod comprises the following steps of recovering strain freeze-dried powder, performing inoculated culture to obtain luminous bacterium liquid, performing 256-fold diluting on the luminous bacterium liquid, and detecting the luminous quantity of the diluted luminous bacterium liquid; sucking a certain volume of the diluted luminous bacterium liquid, and performing refrigerated centrifugation toobtain thalli; mixing the thalli with a protective agent to obtain a thallus mixed solution; performing vacuum freeze drying on the thallus mixed solution to obtain luminous bacterium freeze-dried powder; and forming the luminous bacterium freeze-dried powder kit by the luminous bacterium freeze-dried powder, a diluent, an osmotic pressure regulating solution and a quality control standard substance solution. According to the invention, the stability regulation and control of important parameters such as the initial luminous quantity, the CF value, the positive control value and the negativecontrol value of the kit in the production process are realized, the performance consistency between different preparation batches can be ensured, and the situation that deviation occurs when different batches of kits are used for evaluating the toxicity of a same water body is effectively avoided.

The invention discloses a self-adaptive clamping device for steel pipe welding, and relates to the technical field of welding equipment. The self-adaptive clamping device for steel pipe welding comprises a base, accommodating ring frames, a clamping device body and a control device; the base is provided with the two accommodating ring frames; inner grooves are formed in the inner walls of the accommodating ring frames; the clamping device body is mounted in the inner grooves; the tops of the accommodating ring frames are in an arc shape; and outer semicircular grooves are formed in the tops of the accommodating ring frames. According to the self-adaptive clamping device for steel pipe welding, two steel pipes needing to be welded are inserted into the accommodating ring frames, an anti-clamping device is controlled by a control device to clamp the steel pipes in the accommodating ring frames so as to finish maximum-area fitting to the arc-surface steel pipes during clamping; and in addition, the two steel pipes can be rotated in the original positions by shifting the control device to move along the outer semicircular grooves, so that the problem that the working surfaces which are not welded are gradually welded under the condition that a clamp is not loosened is solved to reduce the tedious steps of people in the welding process.

The invention relates to a method for designing an assistant positioning sleeve of a personalized navigation template. The method mainly includes: acquiring data of a lesion location according to advanced medical image CT/MRI, and combining with reverse engineering and digital medicine to complete designing of the personalized navigation template; on this basis, according to length and inner diameter of a navigation template positioning pipeline, completing designing of the assistant positioning sleeve and an assistant supporting handle in AutoCAD software; after designing of the sleeve and an assistant supporting structure is completed, adopting a titanium alloy material, and utilizing conventional cutting or 3D printing technology to process the assistant positioning sleeve. CT/MRI data and reverse engineering technology are utilized to complete accurate designing of the navigation template; on the basis of the navigation template, the assistant positioning sleeve of the navigation template is specially designed in order to avoid breakage, wearing and sliding after being positioned of the navigation tube and postoperative infection caused by a navigation tube in the process when the navigation template is used to assist the operation process, and accurate clamping is realized by utilizing a sawtooth-shaped structure at the end of the positioning sleeve; the sleeve is made by combining the titanium alloy material, so that postoperative infection caused by the fact that bits generated by wearing of the navigation template are left in the body of a patient in the process of operation is avoided, and accurate positioning in the process of operation is realized.

The invention provides laser drilling equipment for an LCP flexible circuit board, and belongs to the technical field of circuit board processing. The laser drilling equipment for the LCP flexible circuit board comprises a base, a fixing assembly and a laser drilling assembly; the fixing assembly comprises a lifting part, a sliding table, an electric push rod and a clamping part; the lifting part is arranged at the top of the base; the laser drilling assembly comprises a shell, a two-way screw rod, a first motor, a moving block, a laser drill bit, a collecting box, a fan, a filter screen and an air guide pipe; and the shell is arranged at the top of the base. Through the arrangement of the shell, the two-way screw rod, the first motor, the moving block and the laser drill bit, symmetrical hole positions are effectively machined, and the situation that the symmetrical hole positions deviate is avoided to a great extent; and meanwhile, through the cooperative use of the collecting box, the fan, the filter screen and the air guide pipe, chippings generated during drilling are effectively collected, and the influence of chippings on the machining process is avoided to a certain extent.

The invention discloses a steel plate cutting device capable of conveniently adjusting angles and a cutting method thereof. The steel plate cutting device comprises a supporting frame, wherein the top of the inner wall of the supporting frame is fixedly connected with an adjusting mechanism. The invention relates to the field of steel plate cutting equipment. According to the steel plate cutting device capable of conveniently adjusting angles and the cutting method thereof, a micro motor is started to drive a driving wheel to rotate; a driven wheel rotates to drive a laser cutting head to rotate; angle adjustment is carried out on the laser cutting head according to the needs; multi-angle cutting is achieved conveniently; a second motor is started to drive a second rotating shaft to rotate; a tourbillon rotates to drive an adjusting plate to rotate, so that a pushing rod does circular motion in a reciprocating manner so as to continuously push the conveying belt forwards to rotate; steel plates can be automatically conveyed, so that the situation that the steel plates are heavy and are inconvenient to carry can be avoided; and the problems that the existing device cannot adjust the angles of the laser cutting head, the usage is inconvenient, and the steel plates cannot be conveyed are solved.

The invention relates to a dyskinesia recognition device, system and method. The device comprises a plurality of detection parts which are connected with a wireless transmission mechanism through signal lines; the wireless transmission mechanism is in wireless connection with a monitoring terminal, and can transmit signals collected by a plurality of sensors to the monitoring terminal; and the detection parts and the wireless transmission mechanism are connected with bandages, so that the detection parts and the wireless transmission mechanism can be fixed to the set parts of the body of the patient through the bandages. The device and the system are objective and accurate in recognition.

The invention discloses a plasma arc welding machine which comprises a main body box. Maintenance box doors are arranged on the two sides of the middle of the front face of the main body box, a welding device is fixedly connected to the top of the main body box, protection plates are fixedly connected to the two sides of the top of the welding device, a controller is fixedly connected to the middle of the outer wall of the right side of each protection plate, and the top of each protection plate is fixedly connected with a collection box. The plasma arc welding machine provided by the invention relates to the technical field of metal welding. According to the plasma arc welding machine, the situation that chippings splash everywhere on a working platform is prevented; the arranged plasma welding machine can move along with a vertical supporting frame, so that the situation that welding positioning deviates is avoided; the device can be separated through the supporting frame, so that the phenomenon that cleaning is not thorough due to the fact that the chippings splash everywhere during welding is prevented; and sparks generated during welding can be blocked through a protection mechanism, so that the influence of the sparks on workers is effectively reduced, and the labor intensity of the workers is conveniently reduced.

The invention discloses a temperature transmitter fixing device. The device comprises a cylinder body and a limiting sleeve, wherein the limiting sleeve is located at the bottom end in the cylinder body, and a stand column extending to the top end of the cylinder body is arranged in the limiting sleeve; a plurality of uniformly distributed limiting grooves are formed in one side of the stand column, wherein fastening bolts extending into the limiting grooves are arranged on one side of the cylinder body; a side plate is arranged at the bottom end of one side of the cylinder body, wherein a connecting block is arranged at the bottom end of the side plate; and a fixing sheet I and a fixing sheet II are symmetrically arranged at the bottom end of the connecting block, wherein the fixing sheetI and the fixing sheet II are connected with the connecting block through rotating shafts correspondingly. The temperature transmitter fixing device has the beneficial effects that the device is adapted to pipelines with different diameters, so that the purpose of fixing the pipelines is achieved, the situation of deviation of detection data caused by shaking under accidental conditions or movement of an integrated temperature transmitter is avoided, and damage to the integrated temperature transmitter in use is also avoided.

The invention relates to a method for building in a cloud monomer oblique photography model. The method comprises the following steps: generating an oblique photography model; filtering the point cloud data; establishing a plurality of point cloud data sets; preliminarily judging the type of an object to which each point cloud data set belongs; performing secondary judgment on the point cloud data set; performing corresponding monomerization on the point cloud data set; outputting the map data to a webpage end. According to the invention, the building in the oblique photography model is directly monomerized through the internet cloud, and the situation that the monomerized model cannot be generated due to the fact that no corresponding software exists in the host for monomerizing can be effectively avoided. Meanwhile, a plurality of preset floor areas and a plurality of preset height standard data sets are arranged in the cloud; by selecting corresponding preset height standards according to different occupied areas, the actual type of the object to which the point cloud data set belongs can be further judged, and the monomer efficiency of the method for the building in the oblique photography model is effectively improved.

The invention provides an electrically operated valve, a control method and device of the electrically operated valve and a nonvolatile storage medium, and the control method of the electrically operated valve comprises the steps that a movable valve plate of the electrically operated valve is made to move to an initial position, and zero alignment is conducted on the movable valve plate; recording an initial position; and the preset movement position of the movable valve plate is obtained, and the brake valve plate is controlled to rotate according to the angle difference value between the preset movement position and the initial position so that the movable valve plate can move to the preset movement position. By means of the technical scheme, the technical problem that in the prior art, large errors exist in the position adjusting precision of an electric valve can be solved.

The invention provides a conveying mechanism and a code spraying device, and the conveying mechanism comprises a conveying belt, and a driving part is fixedly arranged on the conveying surface of the conveying belt; the supporting platform is used for bearing articles to be conveyed and comprises a supporting plate located above the conveying belt, the position, corresponding to the driving piece, of the supporting plate is provided with a hollowed-out area extending in the advancing direction of the conveying belt, and the driving piece penetrates through the hollowed-out area so as to apply thrust to one side of the articles to be conveyed. By means of the mode, the to-be-conveyed objects can make non-direct contact with the conveying belt through the supporting platform, and the influences of unevenness of the connecting position of the conveying belt during conveying, jumping or shaking of the conveying belt during running and the like on the to-be-conveyed objects are reduced.

The invention relates to the technical field of fabricated buildings, in particular to a concrete fabricated building construction method based on BIM. The method comprises the following steps of S1, establishing a building model for field survey data through BIM modeling software; S2, constructing a supporting column on site according to the model data, and manufacturing a PCF board through a mold; S3, connecting the PCF board and the supporting column, and conducting grouting and bonding through concrete; S4, measuring the data of the spliced PCF boards; S5, comparing the field measurement data with the building model data, and correcting the wrong PCF board; and S6, waiting for solidification of the bonded concrete. According to the method, when steel bars on the PFC board are connected, the length of the steel bars is prefabricated and fixed, so that the situation that the steel bars and a main body of the PFC board extrude each other is avoided, the situation that the PFC board deviates is avoided, and the accuracy of PFC construction and installation is improved.