33results about How to "Reduce human interference" patented technology

The invention relates to the technical field of electric power communication module meter reading test, and discloses an electric power communication module meter reading test method and system, and the method comprises the steps: sending a to-be-tested module into a conveyor belt, carrying out the light supplement after the to-be-tested module enters a detection region, collecting an image, and recognizing display data. If the data display is abnormal, further judging whether bright spots exist or not, and if not, removing abnormal modules; and if yes, adjusting the light supplementing strategy and re-collecting the image until the bright spots disappear. And comparing and synthesizing the newly collected image and the original image, and determining whether the ammeter is qualified after determining that the data is accurate. Light supplementing adjustment is based on analysis of the bright spot position, the light supplementing effect is optimized by controlling the position of a light supplementing lamp, and the accuracy of detection data is ensured. The method can effectively improve meter reading accuracy and reduce manual intervention, and is suitable for automatic production line detection of intelligent electric meters.

According to the machine tool measuring device and the measuring method thereof, the measuring device comprises an external hanging type main body frame, a measuring probe, a driving mechanism and a protection mechanism, the driving mechanism is installed on the main body frame and used for driving the measuring probe to move, the protection mechanism is used for protecting the measuring probe, and the protection mechanism comprises a retractable door capable of being opened in a sliding mode. The measuring probe comprises a probe which can extend out of the telescopic door, the protection mechanism can effectively protect the measuring probe, a rodless cylinder is adopted as a power source of the driving mechanism, so that the structure is more compact, a probe rod is made of carbon fibers, the measuring device is lighter, and the driving mechanism can quickly drive the measuring probe to measure. The machining efficiency is improved, the overall time is shortened, and the machining rhythm is accelerated.

The application discloses a kind of based on flavoromics's sun vinegar aging period flavor dynamic change analysis method, it is related to flavoromics technical field, to solve the current concentration rainstorm causes the temperature and humidity gradient of inner and outer wall of pottery jar to increase dramatically, causes the technical problem that pottery jar astringency is generated, including the following steps: S100, real-time monitoring and risk assessment of heat and humidity stress;S200, rainstorm event fusion early warning;S300, dynamic deduction and strategy optimization based on digital twinning;S400, dynamic microenvironment blocking control execution;S500, closed-loop feedback based on proxy index;S600, post-evaluation and model optimization.The application realizes early quantitative perception to astringency risk by real-time monitoring and calculating heat and humidity stress index representing ion precipitation driving force, combined with the research and judgment model of early warning confidence of fusion meteorological forecast and real-time data, starts the blocking control system, carries out physical intervention to pottery jar, guarantees the quality stability of sun vinegar in rainy season.

The invention discloses a large-volume injection production process based on large-scale production and concentrated preparation equipment, and relates to the technical field of medical preparation production. Step S1; weighing and burdening raw materials and auxiliary materials, preparing water for injection from drinking water, and carrying out weighing and feeding integrated treatment; s2, performing primary concentrated preparation, performing heating sterilization, and filtering a concentrated solution; s3, adding 50 DEG C water for injection into the concentrated solution to dilute the liquid medicine to a specified concentration, adjusting the pH value, and then filtering again; s4, a filling container is prepared, filling and heat sealing are conducted, and a product is sterilized; s5, after filling is completed, the whole system adopts a cleaning / drying procedure; and S6, the product is subjected to light inspection, labeling and packaging. In the whole technological process, control over the temperature, the humidity and the cleanliness is beneficial for keeping the consistency and stability of the product quality. The whole technological process design considers the requirement of large-scale production, and through automatic and continuous operation, the production efficiency and the yield are improved, and the unit cost is reduced.

The invention discloses a tunnel rockburst dynamic susceptibility evaluation method driven by rockburst case data. During rockburst susceptibility evaluation, an incomplete or inaccurate database can reduce the accuracy of a susceptibility evaluation result. The method comprises the following steps: 1, collecting rockburst case data; 2, calculating the similarity of numerical factor indexes; 3, correcting the similarity of the category-type indexes; 4, evaluating the rockburst susceptibility; and 5, performing dynamic updating on the rockburst susceptibility based on data driving. According to the method, on-site rockburst susceptibility evaluation is more and more accurate through continuous increase of rockburst cases, and disaster-causing information factor characteristics can be extracted; meanwhile, the problem that the factor weight is manually given by a traditional statistical model is avoided, and the weight is prevented from being subject to subjective factors and sample data images.

This invention relates to the field of resistance furnace technology, specifically a box-type resistance furnace for diesel fuel ash content testing. It includes a furnace body and a furnace door mounted on the furnace body. A covered ash dish is placed inside the furnace body. The device also includes a two-stage locking mechanism on both the furnace body and the furnace door. This mechanism locks the furnace door with a slight gap before fully closing it. By using the two-stage locking mechanism, the furnace door is first locked in a gap-free state to allow gas to escape and prevent pressure buildup, and then locked in a fully closed state to ensure airtightness and improve testing accuracy. Furthermore, under the action of a linkage mechanism, closing the furnace door causes the deflector tray and covered ash dish to rotate into the furnace, reducing manual interference. When the furnace door is fully closed, the covered ash dish is automatically opened, fully exposing the sample and ensuring reliable and standardized testing. The entire process involves few steps and is simple and convenient.

The invention belongs to the technical field of inorganic plate detection, and particularly relates to inorganic plate moisture-proof performance detection equipment and method.The inorganic plate moisture-proof performance detection equipment comprises a workbench, a movable containing plate is placed at the top of the workbench, and adjusting pieces are symmetrically arranged at the top of the containing plate and used for pushing a workpiece; a pushing part is installed at the top of the containing plate, the pushing part is used for driving the adjusting parts to move at the same time and used for pushing the workpiece to the middle, and a driving part is installed at the top of the workbench and used for driving the pushing part to drive when the containing plate moves. Through the synergistic effect of the pushing piece and the adjusting piece, the workpiece can be automatically pushed to the center position of the containing plate, and it is ensured that the four edges of the workpiece are parallel to the four edges of the containing plate. The accurate positioning not only avoids the detection error caused by the position offset of the workpiece, but also ensures the consistency of the position of the workpiece during each detection, thereby improving the accuracy and comparability of the detection.

The invention belongs to the technical field of metallographic detection equipment, solves the problem of low metallographic sample preparation efficiency in the prior art, and provides a device, method and equipment for automatically loading and manufacturing a metallographic sample for detection, the device comprises a sample injection assembly (5) and an embedding assembly (4), the sample injection assembly (5) comprises a transmission assembly and a sample bin assembly (502), the embedding assembly (4) comprises a light-curing lamp assembly (408), a light-curing resin conveying assembly (409) and a switching assembly, automatic switching between a light-curing resin adding procedure and a light-curing lamp assembly curing procedure is achieved through cooperation of the conveying assembly and the switching assembly, meanwhile, a sample bin (5025) with the adjustable inner cavity depth is arranged, man-made interference in the process from metallographic sample preparation to embedding is reduced, and the accuracy of metallographic sample embedding is improved. According to the metallographic sample manufacturing device, the automation level of metallographic sample manufacturing is improved, and the metallographic sample manufacturing efficiency is improved.

The invention discloses a device and method for rapid detection of bioluminescence intensity of traditional Chinese medicine decoction liquid, which relates to the technical field of traditional Chinese medicine quality detection, and comprises a main body mechanism, wherein the main body mechanism comprises a darkroom, a sample table is fixedly installed on the inner wall of the darkroom, a photomultiplier tube is fixedly installed on the top of the darkroom, a high-voltage power supply is fixedly installed on one side of the darkroom, the output end of the high-voltage power supply is electrically connected to the input end of the photomultiplier tube, a counting component is fixedly installed on the top of the darkroom, and the input end of the counting component is electrically connected to the output end of the photomultiplier tube. The device and method for rapid detection of bioluminescence intensity of traditional Chinese medicine decoction liquid utilize photomultiplier tubes, and photomultiplier tube detection can make up for some disadvantages of fluorescence sensor detection in terms of light source stability, interference signals, complexity of calibration and operation, and detection range and sensitivity, so as to rapidly and accurately evaluate the content of effective components in traditional Chinese medicine decoction liquid.

The invention provides a multi-algorithm fused muck pile boulder rate detection method. The method comprises the following steps: S1, acquiring a muck pile image to be detected; s2, filtering and noise reduction are carried out on the to-be-detected muck pile image; s3, performing segmentation processing on the image obtained in the S2 by using an adaptive threshold algorithm and an overall nested edge detection algorithm, and fusing output results of the segmentation processing by using a fusion algorithm; and S4, identifying the number of pixel points of each target rock area of the segmented image, if the number of pixel points is greater than a set pixel threshold value, determining that the rock is a large rock, and calculating the boulder rate according to the number of pixel points of the large rock area. The method has the advantages that preprocessing and smooth image processing are carried out on the detected muck pile image, gray iterative calculation is carried out on the muck pile image to determine a threshold value and reduce man-made interference, statistical filtering and denoising are carried out according to the mean value and the variance, then a statistical filtering method, a natural iteration method and an edge detection method are fused, image noise can be accurately removed, and the detection accuracy is improved. The accuracy of a detection result is improved.

The invention relates to the technical field of physical properties of materials, and discloses a method and device for nondestructive measurement of density and porosity of a material, and the method comprises the following steps: obtaining material mass and material three-dimensional volume data; obtaining a material contour ROI material and a pore contour ROI pore according to the three-dimensional volume data of the material; obtaining a material volume V material and a pore volume V pore according to the material profile ROI material and the pore profile ROI pore; and obtaining the material density and porosity according to the material mass, the material volume Vmaterial and the pore volume Vpore. According to the invention, the density and porosity of the material can be measured at the same time, and both single-piece measurement and simultaneous measurement of multiple pieces are supported.

The utility model discloses a novel wire drawing machine for communication cable processing, which comprises a main body mounting box, a variable-frequency power supply is fixedly mounted on the front side in the main body mounting box, a main body mounting plate is fixedly arranged on one side of the top of the main body mounting box, and a water storage tank is fixedly arranged at one end of the top of the main body mounting plate. A control valve is fixedly installed on one side of the water storage tank, an installation plate located on one side of the water storage tank is fixedly arranged on the top of the main body installation box, a long-strip-shaped shower head is hinged to one side of the installation plate, and a connecting water pipe is fixedly connected to one end of the top of the long-strip-shaped shower head. According to the wire drawing machine, a full-automatic function is used, man-made interference is further reduced, the production efficiency and precision of equipment can be improved through the full-automatic function, various communication cable raw materials and the like can be installed by replacing a raw material wire drawing installation column, meanwhile, the equipment can conduct single wire drawing and multi-time wire drawing, and the wire drawing machine can adapt to wire drawing of wire bodies of various diameters.

The invention relates to the technical field of tea processing, and discloses an intelligent automatic jasmine tea scenting production line which comprises a plurality of flower growing and scenting all-in-one machines arranged side by side, one side of each flower growing and scenting all-in-one machine is connected with a flower screening machine, and the flower growing and scenting all-in-one machine and the flower screening machine are arranged in an independent temperature and humidity controllable workshop; the tea refining machine and the uniform stacking machine are connected through a conveying device, a camellia and flower mixing machine is arranged on one side of the uniform stacking machine, the uniform stacking machine and the flower growing and scenting all-in-one machine are both connected to the camellia and flower mixing machine, and the discharging end of the camellia and flower mixing machine is connected to the feeding end of the flower growing and scenting all-in-one machine; the tea leaf discharging end of the flower screening machine is connected with a drying machine; the drying machine is connected with a cooling machine. The flower growing and scenting all-in-one machine is used for completing flower feeding, flower turning, flower growing, scenting and the like, multiple purposes are achieved through one machine, the occupied space of equipment is reduced, and automatic processing is achieved through an intelligent control system; and the tea refining machine and the uniform stacking machine are utilized to improve the cleanliness and uniformity of the tea base, shorten the later process and reduce the loss of flower fragrance.

The present invention relates to a novel high-pressure water cleaning unit analysis device, comprising: a test site for real-time acquisition and output of the pressure, speed and current of the high-pressure water cleaning unit, the test site comprising a pressure acquisition device installed at the test station and a test unit installed in a power supply cabinet for acquiring the speed and current data information of the high-pressure water cleaning unit; a host for receiving the data information of the test site; and a computer as a host computer for processing and displaying the host data information. The present invention utilizes the powerful data processing function of the computer, the degree of automation is improved, the data volume and data accuracy are greatly improved, and the data is true and reliable; up to 12 sets of high-pressure water cleaning units can be tested at the same time, improving work efficiency; at the same time, abnormal fault shutdown protection can be set to ensure the safety of the high-pressure water cleaning unit and personnel; the speed, current and pressure parameters correspond to each other in real time, and the delay error is ≤100mS.

The invention relates to an integrated intelligent environment monitoring system for a farm delivery room, and the system comprises the delivery room which is used for placing to-be-delivered livestock; the duty room is used for temporary living of operators on duty, the delivery room is directly isolated from the duty room through a glass plate, and the operators on duty can check the production state of the to-be-delivered livestock in real time. Through the arrangement of the delivery room, the duty room and the glass plates between the delivery room and the duty room, an operator on duty can clearly observe the production process of to-be-delivered livestock in real time, meanwhile, man-made interference on livestock delivery is reduced to the maximum extent, a quiet and stable delivery environment is created for the operator, and the delivery success rate and the survival rate of cubs are effectively increased.

The invention discloses a blast hole precise positioning tool based on a bench method handheld air drill. The blast hole precise positioning tool comprises a bench arranged in a tunnel, and one end of the bench faces the tunnel face; the positioning tool is characterized in that the positioning tool further comprises fixing assemblies and movable adjusting assemblies, the fixing assemblies are fixedly arranged on supporting legs, close to the tunnel face, of the two ends of the rack, and the movable adjusting assemblies are inserted into bottom beams, away from the tunnel face, of the middle of the rack in a sliding adjusting mode in the radial direction of the tunnel; a plurality of rows of positioning holes which are arranged at intervals at high positions and low positions are formed in the fixing assembly; the movable adjusting assembly is provided with a plurality of auxiliary positioning holes which are arranged at intervals in a high-low mode and matched with the positioning holes to position the drilling angle of the drill rod. According to the positioning tool and the construction method, man-made interference during positioning of the drill rod can be effectively eliminated, the structure is simple, and the construction operation efficiency is effectively improved while the drilling precision is improved.

The invention provides equipment and a method for measuring lodging resistance of rice, and relates to the technical field of agricultural machinery. The equipment comprises a vertical supporting rod and an overturning supporting rod hinged to the lower end of the vertical supporting rod, a thrust measuring part is installed at the hinged position, a straw holding assembly and a lower straw shearing assembly are integrated on the thrust measuring part, and a mass measuring part and a power supply battery are arranged on the vertical supporting rod. The method comprises the following steps: measuring internode breaking strength; selecting rice plants and measuring the height; bundling at a position 20cm away from the ground surface; applying a thrust to incline for 45 degrees, and measuring the thrust; after shearing, weighing the weight of the upper part; and calculating a bending moment and a lodging index. According to the scheme, thrust, weight and shearing parameters are synchronously obtained through an integrated structure, the field test efficiency and data accuracy are improved, manual operation errors are reduced, and the method can be used for evaluating the lodging resistance of rice.

The utility model discloses a single crystal silicon electric performance automatic detection device for solving the problem of the dependence on multiple different equipment to carry out the detection of each index, the extremely tedious sample preparation process and the high safety risk of equipment in the use process, provides a kind of single crystal silicon electric performance automatic detection device. The device includes conductivity type detector, resistivity detector, minority carrier lifetime detector, cutting machine, grinding machine, polishing machine, low temperature infrared detector, conveyor belt, mechanical arm, single crystal silicon electric performance automatic detection device ontology. The device integrates multiple equipment, optimizes sample preparation process, realizes automatic operation. It will be placed in conductivity type detector, resistivity detector etc. are concentrated, and sample is automatically transported by mechanical arm, and detection is completed in turn by conveyor belt, avoids manual intervention, and shortens detection period. Standardization of sample preparation link ensures that sample specifications are consistent, and improves detection accuracy. The automatic operation of the device eliminates safety hazards and reduces the risk of injury. Equipment cooperation reduces human interference.

The utility model relates to a visible sealing assembly of a culture shelf, which comprises a metal plate box body frame which is formed by metal splicing or integral forming. The visible plate is arranged on the side surface of the metal plate box body frame to form a cuboid structure with an opening; the visible door is arranged at the opening and rotationally connected with the metal plate box body frame to serve as a turnover door; the sealing element is arranged on the metal plate box body frame or the frame of the visible door and is used for realizing sealing after the visible door is closed; wherein a connecting piece is arranged on the visible plate and is used for fixing the visible plate on a rack of the culture rack. And the film has high light transmittance, is convenient to observe and operate, has good economical efficiency and is convenient to process and produce.

The present disclosure relates to a carbon emission data anomaly detection method, device, medium, equipment and program product, and relates to the technical field of carbon emission. The present disclosure can quickly and accurately identify abnormal data in carbon emission data. The method comprises: obtaining carbon emission data; performing outlier analysis on the carbon emission data, and determining an outlier score of each data in the carbon emission data according to the outlier analysis result; comparing the outlier score of each data in the carbon emission data with a preset threshold value, determining data with an outlier score greater than the preset threshold value, and regarding the data as abnormal data.

The invention discloses a high-voltage paint film continuity tester calibration device which comprises a shell, and an MCU processing unit, a voltage measurement unit, a current measurement unit, a standard current source unit, a square wave generation unit, a control display unit, a timing unit and a resistance load unit are arranged in the shell. The voltage measuring unit comprises a voltage connector, a voltage divider, an amplifying circuit, an AD acquisition unit and an isolation unit; the current measuring unit comprises a current connector and a current sampling unit. The high-voltage paint film continuity tester calibration device is provided with functional modules such as an MCU processing unit, a voltage measurement unit, a current measurement unit, a standard current source unit, a square wave generation unit, a control display unit, a timing unit and a resistance load unit. Verification of parameter items such as test voltage, voltage drop, voltage ripple coefficient, steady-state short-circuit current, sensitivity, response time, counting frequency and the like of the high-voltage paint film continuity tester can be realized.

The invention relates to the field of aerial surveying technology, and is a drone aerial surveying system developed for complex geological conditions. The drone replaces manual work to complete the placement and recovery of self-luminous aerial surveying marks, and has high work efficiency and surveying accuracy. The system consists of a drone, a surveying camera and a workstation. The drone is equipped with a surveying camera and is wirelessly connected to the workstation. The drone part comprises a delivery rack, an electronic mark, an identification light and a recovery rack. The delivery rack is loaded under the drone, has a built-in electronic mark, and is provided with a driving component for releasing the electronic mark. After the drone is remotely controlled by the workstation to select a position, the delivery rack automatically releases the electronic mark. A cross-shaped identification light is provided on the front of the electronic mark, and an identification light power supply, an RTK positioning module, a satellite positioning module and a wireless transmission module are provided in the electronic mark. After the identification light is lit, a self-luminous aerial survey mark is formed, and point data is transmitted to the workstation in a wireless manner. The recovery rack is used to recover multiple electronic marks.

The invention discloses a device and a method for testing dissolved oxygen and ozone isotopes in water, and belongs to the field of gas stable isotope analysis and testing. Comprising a constant-pressure constant-current automatic sampling device and a gas sampling system, a certain volume of water sample in a sealed sample bottle is removed by using the constant-pressure constant-flow automatic sampling device for dissolved oxygen in water, the water sample is placed in the constant-temperature balance oscillation device for balancing, back flushing of a gas circuit is realized by using the gas sampling system, the influence of residual gas is eliminated, and then the sample is collected and purified. Purified gas passes through a multi-channel gas path switching system, separated oxygen is loaded into a gas stable isotope mass spectrometer, oxygen isotopes of dissolved oxygen are detected, and therefore automatic pretreatment of the dissolved oxygen in water and accurate testing of the three oxygen isotopes of the dissolved oxygen are achieved. According to the method, full-automatic operation is realized, man-made interference and air pollution are effectively avoided, and the detection precision and efficiency are remarkably improved.

This invention discloses a production process for filter screen manufacturing equipment and the resulting filter screen. The aim is to provide a high-efficiency, precise, and automated production process for filter screen manufacturing equipment and the resulting filter screen. The key technical points include a combination of numerous process flows such as raw material preparation, cutting and shaping, screen frame forming and fabrication, secondary shaping of the screen frame, and assembly. Precise control at each stage significantly improves product quality, production efficiency, and market competitiveness, resulting in good economic and social benefits. This invention applies to the field of filter screen manufacturing equipment technology.

The invention provides a soil acidity-alkalinity detection device for environmental engineering, and relates to the technical field of soil detection.The soil acidity-alkalinity detection device comprises a base, a sampling opening is formed in the upper end of the base, a fixing frame is fixedly installed at the upper end of the base and located right in front of the sampling opening, and a first driving motor is fixedly installed at the upper end of the fixing frame; a first screw rod is mounted at the output end of the first driving motor and rotationally mounted in a fixing frame, a sliding frame is mounted in the fixing frame in a sliding manner, the sliding frame is mounted on the first screw rod in a threaded manner, a sampling pipe is fixedly mounted on the sliding frame, a conical soil breaking ring is fixedly mounted at the lower end part of the sampling pipe, and a bracket is fixedly mounted at the upper end part of the sampling pipe; a sampling mechanism is mounted at the upper end of the bracket; the sampling mechanism comprises a second driving motor, the second driving motor is fixedly installed at the upper end of the support, automatic treatment, including sampling, sample cutting and crushing and mixing with distilled water, of a soil sample in the sampling process is achieved, and the working efficiency and operation convenience are greatly improved.

The utility model relates to the technical field of mine sampling, in particular to an automatic sampling device of a down-the-hole drill. Comprising a dust collecting box of the down-the-hole drill, a dust outlet is formed in the middle of the dust collecting box, a dust outlet pipe is connected to the dust outlet, a conical pipe is connected to the bottom of the dust outlet pipe, an air locking valve is connected to the bottom of the conical pipe, a connecting pipe is arranged at the bottom of the air locking valve, and a dust collecting bag is detachably arranged on the lower portion of the connecting pipe. The dust collecting box of the down-the-hole drill is utilized, sampling equipment does not need to be additionally arranged, when the down-the-hole drill works, a certain amount of slag foam is guided into the dust collecting bag through the conical pipe and the air locking valve by means of the gravity action of powder through the dust outlet pipe, the conical pipe can prevent the powder from adhering to the pipe wall, and when the drilling machine rests or does not need sampling, the dust collecting bag is detached, and the air locking valve is closed; and powder leakage cannot be caused.

The utility model discloses a non -woven fabric on -line detection system relates to non -woven fabric technical field, this non -woven fabric on -line detection system, including the winding mechanism of winding non -woven fabric, and the upstream of winding mechanism is equipped with visual inspection module and label execution module along non -woven fabric transmission path direction respectively, visual inspection module includes industrial camera, upper light source subassembly and lower light source subassembly, label execution module includes labeller, servo motor and linear module, and the winding shaft of winding mechanism is connected with the encoder through the shaft coupling, and the encoder sends pulse signal to PLC controller, data processing industrial computer and industrial camera, and industrial camera and data processing industrial computer electrically connected, and data processing industrial computer and PLC controller signal connection, the utility model discloses the visual inspection module and label execution module linkage on production line, realize on -line detection and label with the speed synchronization of production line through the encoder, realize machine vision on -line detection instead of manual offline detection, and the recognition rate is high, and the detection is comprehensive, and the efficiency is high.

The invention relates to the technical field of aluminum electrolysis, in particular to a method for calculating a standard blanking interval of an aluminum electrolysis cell, which comprises the following steps of: S1, subdividing production time periods according to daily conditions of the electrolysis cell; s2, correcting the theoretical initial reference blanking interval NB0 according to the blanking feeding rate eta to obtain the initial reference blanking interval NBt0 = NB0 * eta; s3, obtaining a judgment factor TRGt and a reference blanking interval adjustment amplitude NBadj, obtaining a previous period reference blanking interval NBt-1, judging and calculating the reference blanking interval adjustment amplitude NBadj and the previous period reference blanking interval NBt-1 through the judgment factor TRGt to obtain a current period reference blanking interval NBt, and performing safety protection; and when the electrolysis is carried out to the next time period, the step is executed again. The reference blanking interval is automatically adjusted by designing a calculation method, and the refinement, intelligence and digitization level of electrolysis production management is improved.

This invention discloses a wind tunnel wind speed and vehicle force measurement testing system and method for bridges, relating to the field of bridge wind engineering technology. It includes a vehicle model, a wind measurement platform, and a force measurement platform. The wind measurement platform, located inside the wind tunnel, includes a wind-measuring crane for measuring wind speed and direction at different locations. The force measurement platform, located inside the bridge model, includes a force balance and a mechanical servo system. The vehicle model is locked to the force balance, facilitating timely acquisition of the vehicle model's six-component forces during the test. The mechanical servo system is used to transport and move the force balance. Through the cooperation of the wind measurement platform and the force measurement platform, this invention can continuously and synchronously acquire wind speed and direction for each lane under various test conditions, as well as the corresponding six-component forces of the vehicle model. This reduces the number of times the wind tunnel needs to be shut down for adjustments to operating conditions and equipment, minimizes human interference, and improves the efficiency and accuracy of the test.

The invention discloses a welding tool and a welding method. The welding tool is characterized by comprising a fixing base, a double-wire positioning and pressing mechanism, an electric brush disc positioning and rotation preventing mechanism and a welding position switching mechanism; the welding position switching mechanism comprises a sliding table, a horizontal guide rod and a first air cylinder. The double-wire positioning and pressing mechanism and the electric brush disc positioning and anti-rotation mechanism are arranged on the sliding table; the double-wire positioning and pressing mechanism comprises a first positioning block, a rotating pressing plate, an electromagnet and a rotating seat; the electric brush disc positioning anti-rotation mechanism comprises a second positioning block, two anti-rotation blocks and a positioning column; the second positioning block is provided with a sinking groove used for placing an electric brush disc. The positioning column is fixedly arranged at the center in the sinking groove and used for being matched with a center hole of an electric brush disc, and the two anti-rotation blocks are matched with two dovetail grooves of the electric brush disc respectively and used for limiting forward and reverse rotation of the electric brush disc respectively; the displacement amount of the sliding table is equal to the parallel distance between the two straight grooves. The device can be used for positioning, clamping and welding production of electric wire and electric brush disc welding, and has the advantages of rapidness, accuracy, safety, stability, reliability and the like.