119results about How to "Meet the inspection requirements" patented technology

The invention discloses an intelligent power plant autonomous polling robot polling system and method. The method comprises the following steps: integrating a laser radar and a gyroscope, incrementally a raster map by using the laser radar through a SLAM algorithm; searching a middle target location with the minimum target cost estimation by using a reverse D* algorithm, thereby realizing robot dynamic path planning and positioning; reading a label through a RFID reader to acquire information needing to detect in the equipment; detecting an obstacle by using an ultrasonic sensor in the robot running process, and autonomously eluding environment obstacle in the path by combining the SLAM algorithm, thereby realizing autonomous navigation and movement in the complex power plant environment.Multiple non-contact sensors satisfy spot check demands of various sets of equipment. The polling system can automatically poll in the plant, the artificial control is unnecessary, the polling data istransmitted to a control center in real time, and the polling system can give an alarm when abnormity occurs; the polling system can replace the artificial polling, improve the polling efficiency, and improve the security of the power plant equipment.

The invention is suitable for the technical field of image processing, and provides a defect detection method and device, and terminal equipment. The method comprises the steps: obtaining a two-dimensional image and a depth image of a detected object; performing image processing on the two-dimensional image to obtain first defect information of the measured object; performing image processing on the depth image to obtain second defect information of the detected object; and acquiring target defect information contained in the first defect information and the second defect information, and identifying the target defect information as defect information of the measured object. The defect detection method is an automatic detection method, equipment such as scaffolds does not need to be erected, the safety risk, the inspection cost and the engineering quantity are reduced, and the detection efficiency is improved; the regular inspection requirements can be met; errors caused by subjectivejudgment during human eye observation and detection are avoided, so that the detection accuracy is improved. Moreover, two different images are compared to obtain a detection result, and the detectionaccuracy is further improved.

The invention relates to a high voltage transmission line detection method based on linear targets. The high voltage transmission line detection method based on the linear targets comprises the following steps of firstly obtaining a Hessian matrix feature vector direction which is corresponding to every pixel point through a Hessian matrix and enabling the direction to be the direction of the linear target which is formed by the point; extracting points which are approximate to the Hessian matrix feature vector direction through a region growing method to form into small line segments (the linear targets); performing small line segment statistic through a statistical method to obtain a slope K and an intercept B of a power transmission line approximate fitting linear equation and confirming the approximate fitting linear equation of the power transmission line; connecting the small line segments nearby the approximate fitting linear equation and obtaining an accurate position of the high voltage transmission line. The high voltage transmission line detection method based on the linear targets has the advantages of being rapid in detection speed and high in detection accuracy, solving the technical problem of routing inspection of the high voltage transmission line through an unmanned aerial vehicle under complicated background and satisfying the routing inspection requirement of the unmanned aerial vehicle due to the fact that the Hessian matrix is used for detecting of the high voltage transmission line.

The invention relates to a hydraulic examination bed. The hydraulic examination bed comprises a bed body, a bed frame and wheels. The bed body comprises a lying portion and a back leaning portion, the bed frame comprises an upper support, a lower support and supporting frames, the supporting frames comprise supporting frame bodies located on the two sides of the upper support and the lower support and arranged in an inclined mode from top to bottom and connecting frames used for connecting the supporting frame bodies located on the two sides, and the two ends of each supporting frame body are connected to the upper support and the lower support through rotation shafts in a rotating mode respectively. The hydraulic examination bed further comprises a plurality of gas springs, a gas spring control valve, a hydraulic cylinder located at the bottom of the lying portion and used for driving the supporting frames to rotate around the rotation shafts so as to enable the upper support to rise or fall and a power mechanism which can be used for adjusting stretching and contracting of a telescopic rod of the hydraulic cylinder through hands or feet. The end of the telescopic rod is connected to the connecting frames. On various occasions, rising and falling of the examination bed can be realized, angle adjustment of the back leaning portion can further be realized, the structure is simple and the manufacturing cost is low.

The invention relates to the technical field of mechanical equipment, specifically a portable electric equipment inspection device. The device comprises a video acquiring device, a monitoring device and a supporting device; the top of the monitoring device is orderly connected with the supporting device and the video acquiring device from bottom to top. The device is characterized by comprising a guiding frame body, a base and a camera; the supporting device adopts a bent supporting device; the bent supporting device is further provided with a straightening device capable of enabling an upper supporting rod and a lower supporting rod to be on the same perpendicular line; the bent supporting device is further provided with an angle regulating device for regulating an included angle between the upper supporting rod and the lower supporting rod. Compared with the prior art, the inspection device disclosed by the invention can implement the electrified polling working to all electric components at the front side, the rear side and the side part of an electric cabinet body.

The invention relates to an insulator detecting method based on orthogonal direction projection. The insulator detecting method comprises the steps that firstly, the upper boundary and the lower boundary of an insulator area are acquired through the projection of an insulator image in the horizontal direction; secondly, a PCA method is utilized for calculating the included angle between the main direction and the horizontal direction of the insulator image; thirdly, direction correction is carried out on the insulator image through a rotation matrix, and the image is reorganized according to the corrected coordinates; fourthly, an integral projection curve of the insulator image in the vertical direction is acquired, the horizontal position of an insulator is acquired according to the change rate of the integral curve, and after the position information of the insulator image is acquired, whether the selected area is the insulator or not is judged according to the machine studying method; lastly, the coordinates of the insulator area are reversely rotated, and then the precise position of the insulator in the original image can be acquired. By means of theory simulation and a large number of experiments, it proves that the insulator detecting method is high in detecting speed and detecting precision and capable of meeting the requirement of unmanned aerial vehicle polling.

The invention relates to an automation device for testing a wind sensor. The body of the automation device comprises a wind sensor mounting seat, a locating pin, a wind hole locating block, a support arm, a transverse plate, a body fastening block, a transverse plate fixing sleeve, a rotating shaft, a flat key, a planar thrust bearing, a rotating shaft sleeve, a reduction gearbox connecting sleeve, a main bearing pre-tightening ring, an auxiliary bearing pre-tightening ring, a reduction gearbox, a deep groove bearing, a worm wheel, a reduction gearbox bottom plate, a worm, a worm seal cover, a worm pre-tightening ring, a coupling, a step motor mounting seat and a step motor; the control part comprises a device controller, a liquid crystal screen, keys, a step motor driver and the wind sensor. Compared with the prior art, the automation device realizes to automatically test the wind speed and wind direction of the wind sensor; the automation device replaces the previous manual operation mode of operators, reduces the influence of manual factors on the data precision in the testing stage and greatly improves the wind direction and wind speed testing precision.

The invention provides a method and a system for realizing Y-STR typing on the male individual by adopting 26 Y-STR genetic loci. The method comprises the following steps: acquiring DNA of the male individual, and acquiring the genotypes of the 26 Y-STR genetic loci of the DNA, wherein the 26 Y-STR genetic loci are as follows: DYS19, DYS385a / b, DYS389I / II, DYS390, DYS391, DYS392, DYS393, DYS437, DYS448, DYS456, DYS458, DYS635, GATA H4, DYS438, DYS439, DYS460, DYS447, DYS527a / b, DYS617, DYS522, DYS444, DYS508 and DYS533; and acquiring the Y-STR typing result of the male individual according to the genotypes of the 26 genetic loci of the male individual. With the typing result, the operations including family checking, paternity identification, detection for the male element in male and female mixed samples, and the detection for the male element in a plurality of male mixed samples can be realized on the male individual.

The invention provides a portable cable flaw detection robot system. The portable cable flaw detection robot system comprises a high-definition anti-shake camera, a raspberry part, an LED light, a steering gear cloud platform, a follow camera, an infrared thermal imaging camera, an ultrasonic sensor, a main control panel, a motor drive panel, a power supply, a motor, a trolley body, a support platform, a GPS module and a journey calculation module. the portable cable flaw detection robot system provided by the invention has the following beneficial effects that the portable cable flaw detection robot system has the characteristics of convenience and flexibility, can replace manual inspection, meets the requirements of a large number of daily cable inspection work for substation cable trenches, improves the work efficiency, saves a lot of manpower and material resources, lowers the operating cost, simultaneously greatly guarantees the reliability of the power supply of the substation, and provides a good foundation for big data analysis of the later cable operation management of the substation.

The invention provides a rotational locating device applied in the coil of magnetic resonance imaging device, the coil comprising an accommodating cavity for pre-checked component, the said rotational locating device comprising a cushion which can rotate freely in the said accommodating cavity, the cushion is equipped with the first driving component and the first rotating component; while the second driving and rotating component are equipped in coil; the first and second driving component forms the transmission countershaft, the first rotating component rotates relatively with the second rotating device being driven by the first and second driving component, the second driving component is driven artificially or by connecting with external driving source and thus drives the first driving component, through which driving the cushion to rotate through the cooperation of the first and second rotating component, and at the same, controlling the quantitative rotating angle and course of the cushion rotating through rational configuration of the first and second driving component position and size.

The invention discloses an insulator air-water inspection device which comprises a left cover plate and a right cover plate, wherein the edge of the right surface of the left cover plate is provided with one ring-shaped seal ring, the middle part of the right surface of the left cover plate is provided with a concave plane, and the edge of the left cover plate is evenly provided with sixteen fixed holes; the edge of the left surface of the right cover plate is provided with another ring-shaped seal ring, the middle part of the left surface of the right cover plate is provided with a concave air chamber, a pressure gage is fixedly arranged on the outer side face of the side wall of the air chamber, the position of the outer side face of the side wall of the air chamber, which is perpendicular to the pressure gage, is provided with a joint, the pressure gage and the joint are respectively communicated with the air chamber through one through hole, the edge of the right cover plate is evenly provided with eight fixed holes, and the fixed holes in the upper cover plate and the fixed holes in the lower cover plate are fixed with one another through a fixed mechanism after being aligned with one another. The insulator air-water inspection device disclosed by the invention is simple in structure. By adopting the insulator air-water inspection device, the air tight test can be carried out, and the hydraulic test can be further carried out on workpieces.

The invention provides method and system for Y-STR typing of an individual man. The method comprises the following steps: acquiring the DNAs of the individual man, wherein acquired DNAs comprise genotypes of 25 gene loci including 24 Y-STR gene loci and a gender determination locus Amelogenin, and the 24 Y-STR gene loci are DYS460, DYS389I / II, DYS390, DYS392, DYS458, DYS437, DYS385a / b, GATA_H4, DYS522, DYS456, DYS391, DYS447, DYS438, DYS448, DYS393, DYS635, DYS439, DYS19, DYS444, DYS527a / b, DYS617; and acquiring the Y-STR typing results of the individual man according to the 25 gene loci of the individual man. The Y-STR typing results can be used for family checking, male paternity testing, detection of male components in a hybrid male and female sample, detection of male components in a mixed sample of a plurality of males and the like for the individual man.

The invention relates to an elevator landing door control device, in particular to a door-vane-free door-ball-free electromagnetic linkage type landing door device. The door-vane-free door-ball-free electromagnetic linkage type landing door device comprises a landing door return drive device mounted on an upper door frame of a landing door, and a landing door connecting device for connecting the landing door return drive device to the landing door, wherein a driven magnetic plate which corresponds to a drive magnetic plate is arranged on the landing door connecting device; a latch hook is further arranged on the landing door connecting device; the rear end of the latch hook is mounted on the landing door connecting device through a rotary shaft; the front end of the latch hook is a hook-shaped free end; a stopper which is matched with the hook-shaped free end is arranged on the upper door frame of the landing door; the latch hook rotates around a rotary shaft to ascend and descend to realize separating and locking of the stopper; and a safety contact point is arranged on a position, on an ascending path of the latch hook, on the upper door frame of the landing door. The door-vane-free door-ball-free electromagnetic linkage type landing door device cancels hard contact between a door vane and a door ball, and is additionally equipped with an electromagnetic drive part which is in soft contact with a car door, and a user re-designs and re-regulates the safety of the landing door device as well as a door lock and safety contact of the door lock in a brand-new way according to Elevator Related Inspection Rules of Special equipment, so that the landing door device is ensured to meet or to be higher than the requirements of the inspection rules.

The invention relates to a heating treatment device used for an Austenitic grain size carburization test and a using method thereof. The method comprises the following steps that (1) a carburizing catalyst is paved at the bottom of a tank body, activated carbon is paved above the carburizing catalyst and located below an air permeable partition plate, a plurality of samples are placed on the air permeable partition plate in a non-contact mode, and the top end of the tank body is covered with a sealing cover for sealing; and (2) the heating treatment device is placed into a box type resistance furnace, in a high-temperature state, CO2 decomposed by the carburizing catalyst reacts with the activated carbon, thus CO is compounded, a stable carbon potential atmosphere is formed on the peripheries of the samples through the air permeable partition plate, an atmosphere carburizing mode is simulated to form a carburizing layer, and the carburization test of the Austenitic grain size of the samples is completed. According to the heating treatment device used for the Austenitic grain size carburization test and the using method thereof, the carburization test of the Austenitic grain size can be achieved in the regular box type resistance furnace, test cost can be reduced, and test efficiency is improved; and the carburizing heating treatment quality is good, the carburizing layer is uniform, and the examination requirement of the carburization Austenitic grain size is met.

The invention discloses a method for manufacturing holes in different-material laminated structures through an automatic drilling and riveting system. The method includes the steps that before the automatic drilling and riveting system is used for testing and machining, existing numerical control machining equipment is firstly used for testing, and corresponding testing and machining parameters are obtained; the testing and machining parameters are referred and are applied to the automatic drilling and riveting system for hole manufacturing tests, and therefore the best hole manufacturing machining parameters of the automatic drilling and riveting system are obtained. By means of the method for manufacturing the holes in the different-material laminated structures through the automatic drilling and riveting system, vertical tail testing pieces and vertical tail products are tested and machined, the machining results meet the examination requirement, and the hole drilling quality is greatly improved compared with the hole drilling quality of manual machining; meanwhile, the machining efficiency is obviously improved, and continuous, efficient and high-accuracy machining of the vertical tail components is achieved.

The invention relates to an electronic nose positioning device and method. The electronic nose positioning device comprises a carrier (10), an electronic nose (20), an adjusting mechanism (30) and a laser sensing unit (40), wherein the electronic nose (20) is arranged on the carrier (10), the adjusting mechanism (30) is used for adjusting the collection position of the electronic nose (20), and the laser sensing unit (40) is arranged on the carrier (10) or the electronic nose (20) or the adjusting mechanism (30) and used for scanning a to-be-examined object (60) to determine the position of anodor collecting part (61) of the to-be-examined object (60). By means of the electronic nose positioning device and method, the examining procedure of the electronic nose can be simplified.

The invention belongs to the field of analytical chemistry, and particularly relates to a method for determining a roflumilast related substance of by high performance liquid chromatography, wherein the analytical conditions of the method are as follows: using octadecylsilane bonded silica gel as a stationary phase for a chromatographic column, using a mixture of an ammonium dihydrogen phosphate solution and an organic solvent as a mobile phase for isocratic elution. Compared with the prior art, the method has the following advantages and positive effects: impurities which may exist in roflumilast can be effectively separated and quantitatively determined, the specificity is strong, the sensitivity is high, the accuracy is good, and the method can effectively control the product quality ofthe roflumilast and preparations of the roflumilast, drug safety can be improved, and a basis is provided for formulation of quality standards of the roflumilast and the preparations of the roflumilast.

The invention discloses an unsealing method for a molded solid tantalum capacitor. The molded solid tantalum capacitor to be unsealed comprises a tantalum core and an encapsulating material layer forencapsulating the tantalum core, the unsealing method comprises the following steps: removing an encapsulating material layer of the molded solid tantalum capacitor by adopting a corrosive reagent toexpose an internal tantalum core; removing the conductive connection layer and the cathode layer by adopting a reagent capable of generating a catalytic reaction with the cathode layer to expose the dielectric layer; cleaning the dielectric layer with an organic solvent; embedding the tantalum core exposed out of the dielectric layer along the section direction of the tantalum core by adopting embedding liquid; and grinding the inlaid tantalum core until the anode body, the dielectric layer and the interface layer of the anode body and the dielectric layer which need to be observed are exposed. The method has the beneficial effects that the molded solid tantalum capacitor is unsealed by adopting a method of combining wet etching and a mechanical method, so that the dielectric layer and theanode body in the tantalum capacitor can be completely observed after unsealing, and the inspection requirement of failure analysis is met.

The invention discloses a Y-STR gene locus and Y-indel gene locus based compound amplification system and primer combinations used by the same. The provided primer combinations consist of 74 types ofDNA molecules shown as Sequence 1 to Sequence 74 in a sequence table. The STR typing of male individuals can be performed by adopting the primer combinations to build the compound amplification system; and thus, the compound amplification system is high in detected polymorphism, has important identification values on paternity identification, family investigation and other aspects and has significant application values.

The invention relates to preparation of a medicine which is specially used for defecography, can be quickly changed from a liquid state to a gel state in the checking process and can be developed under X rays. The medicine is prepared by adding a material with a quick hardening property in the preparation process and water into a contrast agent taking metal salts (such as barium sulfate and the like) which are non-toxic and harmless, are not absorbed by human bodies and are high in atomic numbers as main materials. The formula has a reasonable design, the medicine is economic and practical and does not have any toxic or side effect, the detection result is accurate and reliable, and a favorable basis can be provided for clinical diagnosis and treatment.

The invention provides an overlay precision measurement mark and a use method thereof, and aims at a photoetching current layer. The characteristics of DBO diffraction measurement are utilized, and aCDSEM measurement pattern does not participate in a diffraction result; after etching, the CDSEM measurement mark can be used for representing the performance of the overlay precision after etching, and the defect that the DBO measurement mark cannot be used for measurement after etching is overcome. The overlay precision measurement mark disclosed by the invention not only can meet the inspectionrequirement of the overlay precision of a photoetching current layer, but also can obtain a test result of the corresponding overlay precision after etching, and can accurately represent the most accurate precision and the communication condition of a current layer device of a graph. The device space is saved, and the overlay precision test requirements in different technological processes are met.

The invention relates to a ground-air cooperative networking system and a control method, the system comprises a high-altitude mobile gateway node device, a ground mobile gateway node device and a supervision background, and the high-altitude mobile gateway node device is responsible for collecting images from high altitude and sending the images to the supervision background in real time; the ground mobile gateway node device is responsible for collecting images from the ground and sending the images to the supervision background in real time; and the supervision background controls the two gateway node devices. According to the networking system, target detection, image acquisition and video transmission are carried out from high altitude by taking the unmanned aerial vehicle as a main part, and image acquisition and auxiliary survey are carried out on plane terrain by adding the trolley on the ground, so that clear high-altitude and plane image information, position information and terrain information can be obtained at the same time. According to the invention, the multi-rotor unmanned aerial vehicle and the unmanned trolley are utilized to effectively complement the shortages of the multi-rotor unmanned aerial vehicle and the unmanned trolley during operation, so that the inspection task is more efficiently completed, and the loss is greatly reduced during operation failure.

The invention provides a method and system for Y-SNP typing of male individuals. The method comprises the following steps: acquiring the DNAs of a male individual; acquiring the genotypes of ten Y-SNPsites of the DNAs, wherein the ten Y-SNP sites include M130, M174, M89, M201, M304, M9, M231, M175, M242 and M207; and acquiring the Y-SNP typing results of the male individual according to the ten sites of the male individual. The invention also provides a system for rapid Y-SNP typing of male individuals. The method and system provided by the invention can accurately acquire the genotypes of ten Y-SNP sites of the male individual, so the Y-SNP typing results of the male individual can be acquired; and the Y-SNP typing results can provide data support for family checking, male paternity identification, or ethnic derivation deduction of the individual man.

The invention provides an analysis and detection method capable of simultaneously determining tedizolid phosphate and related substances thereof. Through a high performance liquid chromatograph, a sample is dissolved by using an ammonium bicarbonate water solution, an acetonitrile-tetrahydrofuran mixed solvent is taken as an organic phase, an ammonium salt water solution or a mixed liquor of an ammonium salt water solution and alkali selected from liquid ammonia, ammonium hydroxide or triethylamine is taken as a buffer solution, and gradient elution is carried out on an octadecyl silane bonded silica gel chromatographic column. The method provided by the invention is good in specificity, high in sensitivity and good in degree of separation, repeatability, degree of precision and linear relation respectively, the substances can be effectively detected when being equivalent to more than 0.03% of main ingredients, the substances can be accurately quantified when being equivalent to less than 0.05% of the main ingredients, the method is applicable to impurity control, and the requirement of related substance checking can be met.

The invention belongs to the technical field of nuclear power station before-service and in-service inspection, and in particular, relates to a probe for ultrasonic inspection of a pressurized water reactor fuel assembly and a manufacturing process thereof. The probe comprises a probe bracket and ultrasonic probe monomers; the probe bracket comprises a base plate, wire leading grooves, a socket mounting seat and probe mounting holes, the base plate is provided with the wire leading grooves and the probe mounting holes, and is connected with the socket mounting seat through screws; the probe bracket can be provided with two ultrasonic probe monomers simultaneously; the ultrasonic probe monomers are mounted in the probe mounting holes, and outgoing cables of the ultrasonic probe monomers are connected with the socket mounting seat through the wire leading grooves; the ultrasonic probe monomers comprise two ultrasonic probe monomer units arranged at intervals, and each ultrasonic probe monomer unit comprises a probe wafer, a sound insulation material, a backing filler and a back reflection inhibition layer from front to back sequentially; wires are arranged on and below the wafer. The height size of the probe produced by the process can be controlled to be within 1.2 mm, and the probe can be guaranteed to be safely close to a fuel rod.

The invention belongs to the technical field of composite materials, relates to a weight and thickness measuring method of a honeycomb sheet with large area and low stiffness, and particularly relates to an automatic honeycomb sheet weight and thickness measuring method which has the advantages of easy operation, simple structure and convenient use. A device manufactured through the method of comprises a weight measuring unit, a thickness measuring unit, a material receiving platform and a control system. Thickness measuring, weighing measuring and density calculating of the honeycomb sheet can be realized. Whether the thickness and the density of a sliced honeycomb block are qualified can be detected, and the precision degree is detected. According to the invention, the method is used for precise weight and thickness measuring of the honeycomb sheet, and meets a high quality honeycomb evaluation requirement; the device manufactured through the method realizes full process automation of weight and thickness measuring; the detection efficiency is greatly improved; an inspection requirement of mass production is met; and the method has the advantages of high measuring precision, good repeatability, safe honeycomb sheet, high efficiency and simple operation.

The invention discloses a high performance liquid chromatography method for alfacalcidol tablet related substances. A sample solution and a control solution are obtained by adopting octadecylsilane bonded silica as a filler and an acetonitrile-water mixed solution as a mobile phase, adopting an ultraviolet detector for a wavelength of 265 nm and especially adopting a vortex-extraction-concentration way, so the detection of an extremely low dose of a drug in the above tablet and related substances thereof is greatly ensured. The method be used to simultaneously analyze all known impurities in the alfacalcidol tablet, and allows the content of each known impurity to be effectively controlled by a main component self-contrasted technology with a correction factor, the resolution among all impurity peaks and the resolution between a main peak and the adjacent impurity peak are respectively greater than 1.5, and the peak purities of the main peak and all the impurity peaks are respectivelymore than 1.0. The high performance liquid chromatography method is a simple and reliable analysis method for the quality control of the alfacalcidol tablet.

The invention discloses a composite amplification system based on a Y-STR locus and a specific primer combination thereof. The primer combination provided by the invention is formed by 30 kinds of DNAmolecules shown as sequence 1 to sequence 30 in a sequence table. The primer combination is used for building the composite amplification system based on the Y-STR locus; then, male individual STR typing is performed; the detected polymorphism is high; the population screening and individual recognition capability of a Y chromosome genetic marker can be enhanced; particularly important identification values are realized on the distant relatives of the same family. Therefore when the primer combination provided by the invention is used for sample screening, the cost is low; the efficiency is high; important application values are realized.

The invention discloses a superfine examination gastroscope, and relates to an esophagus and stomach examination instrument, in particular to the gastroscope of which the diameter is superfine. The superfine examination gastroscope comprises a body, the body is divided into a guide-in part, an operating part and a guiding wire, a guide-in pipe body of the guide-in part is made from a PVC material, the length of the guide-in pipe body is 1,030 millimeters, the outer diameter is 2 millimeters, and the inner diameter is 1.2 millimeters; an illumination and image collection unit is arranged at the front end portion of the guide-in pipe body, and the rear portion of the guide-in pipe body is connected with the operating part; a three-way body is adopted in the operating part, and is divided into two operating openings and one quick electrical interface, the first operating opening in the middle of the three-way body serves as a guiding wire inlet, and the guiding wire is inserted into the guide-in part through the guiding wire inlet; gaps between the guide-in pipe body and the guiding wire are used for delivering water and gas, and a water and gas spraying opening is formed in the front end of the guide-in pipe body; an XLR interface is adopted as the quick electrical interface of the three-way body; the second operating interface of the lateral part of the three-way body is connected with a water / gas unit. The superfine examination gastroscope is exquisite and reasonable, can be accepted by patients, and is highly worthy of popularization.