50results about How to "Reduce the influence of external factors" patented technology

The invention belongs to the technical field that when a vehicle runs with specific actions or under specific conditions or being operated by a driver, the responsivity is adopted as the feature and discloses a large-size vehicle body automatic leveling system and method based on six-point support. The large-size vehicle body automatic leveling system comprises a controller, a double-shaft tilt angle sensor, a human-computer interface, an alarm device, six support legs, six direct current motor drivers and six Hall sensors. By means of the large-size vehicle body automatic leveling system, thehighest point in a leveling support leg is maintained to be unchanged, remaining support points move upwards synchronously to be aligned with the highest point, and when all the remaining points reach the position of the highest point, a vehicle body is in the horizontal state; at the force adjustment stage, it is guaranteed that all tyres leave the ground and do not play the support role, and the whole vehicle body is supported by the six support legs; meanwhile, fine adjustment is conducted, and it is guaranteed that the six support legs are stressed uniformly. By means of the large-size vehicle body automatic leveling system, automatic leveling of a platform can be achieved in an outdoor unstructured environment; and the system has the advantages of being high in leveling precision, speed and reliability, great in stability and the like and is particularly applicable to the electronic equipment vehicle-mounted platform or various campsite motor homes.

The invention relates to an AMT intermediate shaft braking structure. The AMT intermediate shaft braking structure comprises an intermediate shaft extending from a transmission housing to a front endcover of a clutch housing. A plurality of friction discs rotating along with the shaft are arranged at intervals on the outer periphery of the extension portion of the intermediate shaft. Braking discs which do not rotate along with the shaft are arranged between the friction discs. A piston is hermetically arranged in the front end cover of the clutch housing, and the front end cover of the clutch housing is internally provided with a braking airflow inlet. The center of the piston is connected with the axial center of the intermediate shaft through a compression spring. Under the action of air pressure, the piston overcomes the elasticity of the compression spring and pushes one ends of the braking discs to be combined with the friction discs, the rotating speed of the intermediate shaftis reduced by the torque generated by the friction between the braking discs and the friction discs, collected rotating speed signals are fed back to a transmission control unit by an intermediate shaft rotating speed sensor, and the braking of the intermediate shaft is released and gear shifting is carried out when the rotating speed of the intermediate shaft reaches a target rotating speed range. The internal space of the transmission housing is fully utilized. The AMT intermediate shaft braking structure has the advantages of being low in weight and little affected by external factors.

The invention discloses a surface polishing machine of a metal zipper, aiming at providing the surface polishing machine of the metal zipper with good polishing effect. The surface polishing machine of the metal zipper consists of a pressing drum mechanism, a polishing mechanism arranged behind the pressing drum mechanism and a belt discharging mechanism arranged behind the polishing mechanism, and is characterized in that polishing wheels are arranged in the polishing mechanism; polishing supporting wheels are arranged under the polishing wheels; two belt-passing wheels are arranged under the polishing supporting wheels; and the polishing wheels, the polishing supporting wheels and the belt-passing wheels form polishing units. The polishing wheels are flap wheels. The polishing units are arranged oppositely to form at least two the polishing unit groups. The surface polishing machine is mainly used for polishing the surface of the metal zipper of a metal zipper manufacturer so as to improve the quality.

The invention relates to a conductance survey meter, which belongs to the technical field of measurement and identification facilities for coin and articles to the coin. A reference signal is led out between a signal source and an AC constant current source, and is input into the input terminal for reference signal of a phase sensitive circuit through a phase shift circuit; a detection signal is extracted from the detection circuit and is input to an input terminal for detection signal of the phase sensitive circuit through an amplifying circuit; an output terminal of the phase sensitive circuit is connected with the signal input terminal of a CPU chip; an output terminal for detection result of the CPU chip is connected with a display circuit for outputting and displaying the detected conductivity obtained through operation. Compared with the prior art, the conductance survey meter has the advantages that no additional magnetic material is needed in and around the detecting coil; furthermore, as a comparison method is adopted for a shadow coin discriminator, and an absolute measuring method is adopted in the conductance survey meter, effects from external factors can be reduced to the lowest level.

The invention relates to a layout method for a surveying control network. The layout method comprises the following steps: layout of control points in an overall plane control network: controlling point positions of surveyed points by using a cross-shaped small portal frame, and embedding prefabricated cement columns on the controlled point positions, wherein the prefabricated cement columns are made from deposit concrete of reinforcing steel bars, the reinforcing steel bars are reinforcing steel bars with the diameters of greater than 30 mm, the upper ends of the reinforcing steel bars are rubbed down, cross curves are carved as mark points, the lower ends of the reinforcing steel bars are bent into hooks, the reinforcing steel bars are poured into concrete, and the dimensions of the bottoms of the columns are not smaller than those of the tops of the columns; underground axis setting-out: erecting a theodolite onto the positions of axis control piles on the edges of pits; and measurement of structural engineering on the ground: calculating the X and Y coordinates of the horizontal control points according to X and Y coordinates given in a map, and carrying out re-checking of thecontrol points by using a total station. The layout method has the advantages that the method is convenient and simple in operation and the measurement accuracy is improved. The control piles are firmand reliable and are not influenced by the environment, and the subsequent measurement accuracy is ensured.

The invention relates to a mobile intelligent inspection system of a cable device and an inspection method. The mobile intelligent inspection system of the cable device comprises an RFID electronic tag, a mobile terminal and a remote control center, wherein the RFID electronic tag is arranged on a cable and definition attribute information is input in the RFID electronic tag; the mobile terminal communicates with the RFID electronic tag in a wireless communication manner; the remote control center is communicated with the mobile terminal in a wireless communication manner. Compared with the prior art, the information of the RFID electronic tag on the cable device is read by the mobile terminal, so that a power transmission and transformation grid is detected; the direct contact manner is avoided; the operation process is simplified; the working intensity of inspectors is alleviated. According to the inspection method, the information of the RFID electronic tag of the cable device is read by the mobile terminal, then the information is processed by a central processing unit, so that a power transmission and transformation grid device is detected; the working intensity of the inspectors is alleviated.

The invention belongs to the technical field of automatic smoke removal of laparoscopes and discloses an automatic smoke removal system of a laparoscope. The automatic smoke removal control system ofthe laparoscope comprises an image acquisition module, a smoke detection module, a main control module, an image enhancement module, a three-dimensional model construction module, a locating module, apurification module and a display module. According to the system, the optical locating system in existing surgical operation navigation is fully utilized through the three-dimensional model construction module, other hardware equipment does not need to be introduced, the working flow of existing laparoscopic navigation cannot be influenced, and therefore the system is more economical and direct;meanwhile, a moving path of the tail end of an endoscope head is determined through the locating module according to the known distance and the known angle, and therefore the tail end of the endoscope head can be quickly and accurately moved to a to-be-measured point of a stamp card along the moving path. Moreover, the influences of subjective factors and external factors are eliminated, so thatthe operation difficulty is greatly reduced, and the operation efficiency is improved.

The invention belongs to the field of operation quality assessment and monitor configuration of PON optical network and specifically relates to a method for accurately regulating and controlling business optical signal power of a PON network. During an operation process of the optical network, an optical network device accurately calculates transmit-receive light power values of related business wavelength of each optical node in optical network topology for a certain moment, the transmit-receive light power values of related business wavelength of each optical node at the very moment are gathered through optical network business, the received optimal power of the related business wavelength of any optical node is subtracted by the measured receive light power value of the related business wavelength at the moment, the obtained difference is a regulation and control value of the emission power of related business wavelength of the optical node optical network equipment corresponding to the optical node in the optical network topology, and related equipment is accurately regulated and controlled. The method realizes on-line accurate regulation and control of various business optical signal power of an optical network, ensures optimal work state of the network, and greatly improves the operation and management quality of the optical network.

The invention relates to a solidifying point determining device which comprises an ice bath device, a refrigeration device and a cold trap where an ice bath tank is arranged. The ice bath device comprises the ice bath tank, a determining pipe, a determining pipe stirring rod which is inserted into the determining pipe and an ice bath tank stirring rod which is inserted into the ice bath tank, wherein the determining pipe is outwards communicated with a feeding branch pipe which inclines upwards, the feeding branch pipe is arranged between an air sleeve plug and a determining pipe upper cover, and a branch pipe plug for sealing the feeding branch pipe is arranged at the top end of the feeding branch pipe. The refrigerating device comprises a compressor, a condenser, a capillary tube and a coiled tube type evaporator, wherein the compressor, the condenser, the capillary tube and the coiled tube type evaporator are sequentially and circularly connected through a refrigerating fluid pipeline. A magnetic stirrer is arranged on the lower side of the bottom of the cold trap. The solidifying point determining device further comprises a digital backmann thermometer, an electric control device and an ice bath temperature sensor. The invention further discloses a method for determining a solidifying point through the solidifying point determining device. The solidifying point determining device has the advantages that an experiment temperature and the stirring speed can be conveniently controlled and a serious surfusion phenomenon can be avoided.

The invention relates to an experimental device for optimizing a plant retention system structure based on comprehensive water quality and quantity control. The device comprise a rainfall storage box, a water pump, a water guide pipe, a connector, a support, a rain fall hole, a poly vinyl chloride (PVC) slim tube, a PVC slim tube rubber plug, a poly vinyl chloride un-plasticised (PVC-U) tube, a PVC-U tube base, a sampling hole, a sampling hole plug, a runoff groove, a runoff tube, a rubber tube connector, a hose clip, a rubber hose and a PVC hard tube; outlets at the lower parts of the rainfall storage box and the runoff groove are connected with an inlet of the water pump; a water outlet of the water pump is connected with the PVC slim tube and the runoff tube which are arranged on the support through the water guide pipe; the rain fall hole which faces downwards and is arranged on the PVC slim tube is opposite to the upper part of the PVC-U tube; round holes facing downwards are formed in the runoff tube at intervals and are connected with the PVC hard tube; the PVC hard tube and the rubber hose are communicated with the PVC-U tube; and the hose clip clamps the rubber hose to control runoff flow. The device has a novel conception, a simple structure and low cost, can be used for simultaneously regulating the rainfall and the runoff strength, and meets actual demands.

The invention discloses a reservoir gate quick cutting and windowing device and a windowing method thereof. The reservoir gate quick cutting and windowing device comprises a cutter, a detonating device and a magnetic fixing device, and the detonating device and the magnetic fixing device are correspondingly installed on the cutter. According to the reservoir gate quick cutting and windowing device, the magnetic fixing device is adsorbed on a steel plate of the gate, after the cutter is detonated by the detonating device, concentrated energy metal jet is generated to cut through the steel plateof the gate, quick windowing of the reservoir gate is achieved, water outside the gate is conveniently guided through a diversion tunnel, thus the water pressure inside and outside the gate is balanced, the stuck gate can be lifted smoothly, according to the cutting and windowing device, the problem that an old reservoir gate cannot be lifted normally can be effectively solved, the construction difficulty is greatly lowered, the construction period is greatly shortened, meanwhile the hidden danger of personnel and mechanical equipment operation can be avoided, and the purpose of cutting and windowing the reservoir gate quickly is achieved.

The invention provides a method for testing the fracture property of a polypropylene fiber cement stabilized gravel. The method comprises the following steps: proportioning test pieces, measuring a fracture leading edge strain field of each of the test pieces, fracture-cutting, performing complementary cutting, sticking strain gauges, acquiring data through a strain acquisition instrument, measuring the mid-span deflection delta of each of the beam test pieces, performing data acquisition, measuring the load of each of the cement stabilized gravel test pieces and calculating the fracture toughness. The method provided by the invention has the benefits that by adopting the middle beam test pieces as test samples, the discreteness existing in test results can be reduced; the rigidity of a test machine can be ensured during the rigid component test between upper and lower pressure plates of the test machine, and the test machine is prevented from releasing the elastic deformation energy accumulated in a test machine body to the test pieces when the test pieces are fractured, so that after the load reaches a peak value, the corresponding test piece is broken immediately, and a full fracture curve cannot be determined; the test results are high in accuracy and reliability; the test is performed through a three-point bending method, so that the production requirements of the test forthe test machine and the test pieces can be reduced; external influence factors are small.

The invention discloses a girth welding method for a wind power tower tube. The girth welding method comprises the steps of: (1) beveling, specifically, forming inner bevels and outer bevels sequentially and alternately in the end faces of prefabricated ring pieces of the wind power tower tube in the annular extending direction; (2) abutting, specifically, pairing one set of adjacent prefabricatedring pieces of the wind power tower tube, and thus enabling the opposite inner bevels and outer bevels to be correspondingly aligned; (3) welding, specifically, completing sequential welding of multiple sets of inner bevels and outer bevels by adopting a mode that a set of adjacent inner bevels and outer bevels are welded at the same time; and 4) polishing: specifically, polishing a welded weld joint. The girth welding method achieves the effects that the welding quality can be effectively improved, and the influence of external factors is reduced.

The present invention relates to an adhesive film, a dicing / die-bonding film, a method for manufacturing a semiconductor device, and the semiconductor device. The present invention provides an adhesive film capable of manufacturing a high-reliability semiconductor device with good yield and application thereof. The present invention provides an adhesive film used for embedding a first semiconductor component fixed on an adherend and fixing a second semiconductor component different from the first semiconductor component on the adherend, and the melt viscosity under 120 DEG C at a shear velocity below 50s<-1> is preferably more than 50 Pa*s and less than 3000 Pa*s. Storage modulus of the adhesive film before thermofixation under 25 DEG C is preferably more than 10 Mpa and less than 10000 Mpa.

The invention belongs to the technical field of measurement, and particularly relates to a measurement method of a micro-weighing electronic scale. The method comprises the steps that: an electronic scale is placed in a special measurement laboratory, after the electronic scale is placed horizontally, and air in the measurement laboratory is humidified by an air humidifier, so that it is guaranteed that the humidity of the air ranges from 45% to 60%; a sample is put into a standard container by using tweezers, and the container is immediately sealed by using a sealing cover; then the standardcontainer is placed on a weighing platform of the electronic scale by using special tweezers within 0-3 minutes, so that it is ensured that hands are not in direct contact with the sample and the surface of the weighing platform of the electronic scale in the taking and placing process; and finally, the sample is measured for three to five times, and an average value of multiple times of data is taken as final measurement data. According to the measuring method, the stability of the sample is ensured by weakening the magnetic force and static electricity of the sample, and a baffle arranged onthe electronic scale is matched to block airflow to a certain extent, so that the accuracy of a micro-weighing result is ensured.

The present invention discloses a high-voltage transmission line high-precision location system. The system comprises a monitoring sensing module, a ground monitoring pier, a solar energy panel, a power supply module, a communication module and a monitoring center. The power supply module is connected with the monitoring sensing module, the solar energy panel and the communication module; the monitoring sensing module is installed on a tower through an antenna support; the monitoring sensing module is configured to collect basic data of the tower; the ground monitoring pier is configured to collect geological environment information of a geographic position where the tower is located; the communication module is connected with the monitoring sensing module, the ground monitoring pier and the monitoring center; and the monitoring center is configured to solve the real-time three-dimensional coordinates of the tower according to the position information of the tower and configured to monitor the state of the tower according to the inclination of the tower and the deformation information, wherein the real-time three-dimensional coordinates are millimeter coordinates. The embodiment ofthe present invention provides a high-voltage transmission line high-precision location system with accurate location, various location functions and stable location data.

The invention provides an overhead line system hard spot detection method and system; the system comprises a laser, an industrial area-array camera and a pantograph slide plate, the laser and the industrial area-array camera are arranged on the side surface of the pantograph slide plate; and the method comprises the following steps: fixedly emitting laser to the pantograph slide plate through thelaser; determining position information of a laser point on the side surface of the pantograph slide plate; acquiring a monitoring image monitored by the pantograph slide plate through the industrialarea-array camera when the laser emits laser to the fixed point of the pantograph slide plate; determining a displacement distance set of the laser points according to the monitoring image; comparingthe displacement distances in the displacement distance set with a preset distance threshold, and determining corresponding laser points when the displacement distances are not smaller than the presetdistance; and determining an overhead line system hard point according to the laser point, and determining the specific position of the overhead line system hard point according to the overhead linesystem hard point. Accurate detection of the hard points of the overhead line system can be realized.

The invention relates to a millimeter wave based blood sugar measurement system for collecting the wave spectrum information of the millimeter wave and obtaining the corresponding blood sugar value of the wave spectrum data. In the measurement process, a multi-frequency millimeter wave antenna array is adopted, and generates millimeter waves with different frequencies, so that in the millimeter wave noninvasive blood sugar detection process, the influences of external factors are reduced, the blood sugar measurement values at different frequencies are obtained, and the device measurement precision and stability are improved.

The invention provides an environmentally-friendly durable physical acceleration experimental device, and particularly relates to the technical field of physical experimental devices. The device comprises a seat and a base, a plurality of second support rods are evenly arranged on the right side of the top end of the base, the top ends of the second support rods are provided with movement tubes, the movement tubes are transparent glass tubes, the right ends of the movement tubes are communicated with vertical tubes, the right sides of the bottom walls of inner cavities of the movement tubes are provided with fixed pulleys matched with the vertical tubes, the movement tubes are internally provided with experimental mechanisms respectively matched with the fixed pulleys and the vertical tubes, and the vertical tubes are transparent glass tubes; the movement tubes are set to greatly reduce the rolling friction of an experimental trolley, thereby reducing the influence of the friction on the experimental data and improving the accuracy of the experimental data; the vertical tubes are used for blocking the influence of the wind on weights and wire ropes, external influence factors are further reduced, and the accuracy of experiments is improved; through a receiving box, the loss of the weights and collision damage can be prevented to the maximum extent, and the service life of the experimental device is prolonged.

The invention relates to an artificial preparation method of a fragile material, which is characterized in that the method comprises the following steps: preparing raw materials of cement, clay, and water, wherein the mass ratio of the cement, clay and water is 250-400:1000:50-560; then stirring, compacting and molding the raw materials to obtain the final product.

The invention provides a dose verification die body model manufacturing method, a device thereof and a system, and the manufacturing method comprises the steps: S101, building a three-dimensional model according to the image data of a patient, and generating a dose detector model; S102, forming a space corresponding to the shape of the dose detector model in a patient target area and a dangerous organ of the three-dimensional model to generate a first three-dimensional model, and marking an area associated with the patient target area on the surface of the first three-dimensional model; and S103, cutting the first three-dimensional model to form a second three-dimensional model, performing 3D printing on the second three-dimensional model to obtain a carrier model, assembling the carrier model, and putting a dose detector into the carrier model to form the dose verification die body model. The model and the patient are kept consistent, the influence of external factors is reduced, thedifference between the verification dose and the actual dose of the patient is reduced, accurate instructions are achieved by controlling the dose endangering organs, an incident point, an area and direction of rays are determined in the mode of marking the associated area of the target area, and dose irradiation is facilitated.

The invention relates to an electronic product, in particular to an electronic product for driving away birds in a farm. The technical problem to be solved is: to provide an electronic product for repelling birds for farms that saves time and labor and is less affected by external factors. The technical solution of the present invention is: an electronic product for driving away birds for farms, including a mounting plate, wheels, water outlet pipes, valves, mounting seats, motors, two-way cams, first poles, connecting plates, etc.; Wheels are installed at the bottom, a cavity is opened in the mounting plate, a water outlet pipe is arranged at the lower part of the right wall of the mounting plate, a valve is arranged on the water outlet pipe, and a through hole is opened at the right part of the wall of the mounting plate. In the present invention, the scarecrow continuously jumps up and down, and the arm can continuously swing up and down, so that the birds can be driven away, and the rotation of the rotating plate can better drive the birds away, and the guide rod and its upper device can move down quickly, so that Speeding up the rate at which the scarecrow descends makes the scarecrow more effective at repelling birds.

The invention relates to a conductance survey meter, which belongs to the technical field of measurement and identification facilities for coin and articles to the coin. A reference signal is led outbetween a signal source and an AC constant current source, and is input into the input terminal for reference signal of a phase sensitive circuit through a phase shift circuit; a detection signal is extracted from the detection circuit and is input to an input terminal for detection signal of the phase sensitive circuit through an amplifying circuit; an output terminal of the phase sensitive circuit is connected with the signal input terminal of a CPU chip; an output terminal for detection result of the CPU chip is connected with a display circuit for outputting and displaying the detected conductivity obtained through operation. Compared with the prior art, the conductance survey meter has the advantages that no additional magnetic material is needed in and around the detecting coil; furthermore, as a comparison method is adopted for a shadow coin discriminator, and an absolute measuring method is adopted in the conductance survey meter, effects from external factors can be reduced tothe lowest level.

The invention discloses a quick-cutting and window-opening device for a reservoir gate and a window-opening method thereof. The quick-cutting and window-opening device for a reservoir gate includes a cutter, an explosion device and a magnetic fixing device, and both the initiation device and the magnetic fixing device are installed on the cutter . The rapid cutting and window opening device for the reservoir gate is adsorbed on the gate steel plate by the magnetic fixing device. After the cutter is detonated by the detonating device, the energy-gathering metal jet will be generated to cut through the gate steel plate, so as to realize the rapid opening of the reservoir gate, so as to remove the outside of the gate. The water is diverted by the diversion hole, so that the water pressure inside and outside the gate is balanced, and the stuck gate can be lifted smoothly. This cutting and opening device can effectively solve the problem that the old reservoir gate cannot be lifted normally, and greatly reduces the construction difficulty and construction period. At the same time, it can avoid the safety hazards of personnel and mechanical equipment operation, and realize the purpose of quickly cutting and opening the reservoir gate.

The invention relates to an automatic welding method for small bore pipes, in particular to a carbon dioxide automatic full position welding method for the small bore pipes, which comprises an automatic welding machine and the following steps: 1, preparing a welding groove, wherein the welding groove for the automatic welding is processed by a mechanical method; 2, assembling the pipes and performing tacking, wherein manual tungsten electrode argon arc welding is adopted for pipe tacking; 3, performing back sealing welding on the pipes, wherein the manual tungsten electrode argon arc welding is adopted for the back sealing welding of the pipes; 4, setting welding standards of the automatic welding machine, wherein each pipe is divided into 12 areas according to a clock, and then standard setting is performed; 5, mounting the welding head of the welding machine; and 6, welding by automatic welding, wherein teaching is performed before welding, geometrical errors caused by pipe preparation, machining, welding deformation and assembly are avoided, and a method for welding a circle clockwise and then welding a circle anticlockwise is adopted for welding in the multi-layer multi-pass welding. The method adopts welding processes of TIC back sealing welding and CO2 automatic welding to realize the automatic full position welding of the small bore pipes.

The present invention provides a catenary hard point detection method and system, including a laser, an industrial area array camera and a pantograph slide, the laser and the industrial area array camera are arranged on the side of the pantograph slide, the method includes: Fix the laser to the pantograph slide by the laser, determine the position information of the laser point on the side of the pantograph slide; use the industrial area array camera, fix the laser to the pantograph slide When the point emits laser light, obtain the monitoring image monitored by the pantograph slide; determine the displacement distance set of the laser point according to the monitoring image; For comparison, determine the corresponding laser point when the displacement distance is not less than the preset distance; determine the hard point of the catenary according to the laser point, and determine the specific position of the hard point of the catenary according to the hard point of the catenary. The invention can realize accurate detection of catenary hard spots.

The invention provides a method for identifying main sliding direction of landslide, which is characterized in that the method is carried out according to the following steps: engineering investigation data of a sliding mass is obtained, a basic data map theme of the sliding mass is constructed, and grid division is carried out on the sliding mass, thereby obtaining a geologic section grid theme,a drill data grid theme and a surface elevation grid theme; a sliding mass thickness grid theme is obtained by a GIS system; and weight of the sliding mass W(i , j) in each grid (i, j) is obtained with a combination of sliding mass geotechnical gravity index gamma; then, gradient order is called to obtain gliding force T(i, j) of each grid; aspect order is called to construct a trend map theme ofa slip plane and obtain sliding azimuth angle Asp(i, j) of the sliding mass in each grid; thereby obtaining the main sliding direction of the sliding mass. The invention has the remarkable effects that the method can be little affected by external factors, has high reliability and simple operation, can provide accurate and scientific foundation for landslide control engineering, ensures optimizeddesign and saves investment cost.

The invention discloses a residual stress detection method for an aluminum product. The method comprises the following steps: cutting samples; respectively cutting and sampling the two ends and the middle part of tested samples wafer; carrying out sample appearance inspection; during use, carrying out horizontal detection on the samples by a laser horizontal detection device; meanwhile, respectively weighing and recording the samples; numbering the samples, differentially numbering different samples, storing the samples at the same position; carrying out ultrasonic detection, putting the sample to be detected and ultrasonic detection equipment into a vacuum box; carrying out residual stress detection and surface treatment on the samples by virtue of an ultrasonic part detector, and washingand cleaning the surfaces of the samples by using purified water. The chemical detection efficiency can be improved, the reliability of a chemical detection result is improved; meanwhile, vacuum detection is matched, influences of external factors are reduced, the data reliability is improved, the detection cost is saved; and the detection reliability is improved, and production and machining ofaluminum materials are more convenient.