71results about How to "Realize detection automation" patented technology

The invention discloses an intelligent assembly testing production line of a hydraulic plunger pump. The intelligent assembly testing production line of the hydraulic plunger pump is characterized by comprising a branch line assembly line and a main line assembly line, wherein the branch line assembly line comprises a branch line conveyer line and assembly tables which are orderly arranged on the branch line conveyer line, and the main line assembly line comprises a main line conveyer line and assembly tables which are orderly arranged on the main line conveyer line. Compared with the prior art, the intelligent assembly testing production line of the hydraulic plunger pump has the following advantages and effects that the structure design is more reasonable; automatic transportation of a workpiece is achieved; automatic detection and automatic assembly are achieved; a computer is adopted to measure and control; the systematization and the datamation of the assembly lines are achieved; the data of an accepted product and an rejected product can be traced; the production efficiency is improved; the labor intensity is reduced; the labor cost is reduced; the production efficiency is improved, and assembly and production of 2-3 similar standardized products can be achieved.

The invention discloses a full-automatic LCD detecting control system and method based on an AOI technology. The system comprises an Inline line body PLC module and a detecting workstation, wherein automatic compression joint equipment and an AOI system are arranged in the detecting workstation; the Inline line body PLC module is used for controlling the position of an LCD panel on an assembly line; the automatic compression joint equipment is used for controlling a motor to carry out automatic plug wire compression joint on the LCD panel of the detecting workstation; after plug wire compression joint is finished, the AOI system is informed to begin to detect; after a detection finish signal transmitted from the AOI system is received, a wire is automatically unplugged from the LCD panel; and the AOI system is used for receiving a detection beginning signal and then automatically optically detecting the LCD panel, generating a detecting information file, and transmitting the detecting finish signal to the automatic compression joint equipment. Disadvantages of manual detection can be overcome, the defect detection speed is high, the precision is also high, the system is automatic and practical, a non-contact mode is carried out, and the development prospect in the industry of defect detection of liquid crystal displays is wide.

The invention discloses a tool abrasion visual examination device and method for numerical control turning machining. The device comprises an image acquisition device, a driving device and a computer.The device is simple in structure and convenient to install, and can achieve on-machine detection of the tool abrasion state in a machining gap, the main rear tool surface of a turning tool can be measured without disassembling the tool, the detecting precision is high, the detecting time and the tool setting time are greatly shortened, the work efficiency is improved, and the tool abrasion visual examination device and method for numerical control turning machining are very suitable for application of an automation site. According to the method, three tool abrasion parameters of VBmax, VB and the main rear tool surface abrasion region area are adopted as characteristic indexes to describe the tool abrasion state, and errors may be generated by a single parameter are overcome; and a support vector machine is used for building a sample database and the support vector machine is trained, the three tool abrasion parameters of the abrasion region are used as input of the support vector machine, and the abrasion grade to which a tool belongs is monitored in a self-adaptive manner.

The invention discloses a seamless table tennis ball bounce performance detecting and sorting device, which comprises a ball supply device, a bounce device, a bounce collision information collection and treatment device and a ball collection device, wherein the ball supply device comprises a ball supply hopper, a discharge pipe, a ball supply rotary disk and a ball outlet elbow which are sequentially connected; the ball outlet elbow is provided with a ball inlet section and a ball outlet section, and the ball outlet section is horizontally arranged; the bounce device comprises a ball receiving bounce slope and a ball receiving bounce plane, the ball receiving bounce slope is arranged under the ball outlet elbow, and the normal direction of the ball receiving bounce slope is perpendicular to the axial space of the ball outlet section; the ball receiving bounce plane is arranged at the bottom of the ball receiving bounce slope and extends in the bounce forward direction of a table tennis ball; the bounce collision information collection and treatment device comprises a plurality of collision sensor and processors which are arranged on the ball receiving bounce plane in parallel. The seamless table tennis ball bounce performance detecting and sorting device can eliminate an effect of the falling initial velocity of the table tennis ball, eliminate errors generated by uneven bounce performance of different areas of a spherical surface of the table tennis ball and achieve real-time online detection.

The present invention discloses a system and a method for automatic detecting a keyboard interface of a notebook computer. The method comprises: acquiring a keyboard position corresponding list through scanning a keyboard array of the notebook computer firstly; acquiring a position value of a key to be tested from the keyboard position corresponding list by testing software running in the notebook computer; receiving a testing command sent by the testing software through a general serial bus interface; forming a virtual keyboard matrix by using at least one matrix switch chip so as to control the closing action corresponding to the position of the keyboard in the virtual keyboard matrix according to the testing command; according to the type of the keyboard interface of the notebook computer, switching and outputting a real key position value corresponding to the closing action to the notebook computer; and receiving a real key position value and comparing the received real key position value with the position value of the key to be tested.

The invention relates to the technical field of product detection and in particular relates to a heating and digestion automatic control device for detecting heavy metal of foods. The heating and digestion automatic control device comprises a worktable fixed on the ground, and a smoke discharging box is mounted on the worktable; the heating and digestion automatic control device is characterized in that a heating device and a height platform plate are mounted on the worktable in the smoke discharging box; the height platform plate is provided with a positioning supporting plate; four bracketsare fixed on a tabletop of the worktable respectively through bolts; transverse supporting rods are connected with the tops of the two pairs of brackets; two parallel longitudinal supporting rods arearranged at the upper sides of the two transverse supporting rods; straight racks are fixed above the supporting rods; the two straight racks are engaged with two gears respectively; the gears are fixed at two ends of a long shaft through bolts; two shaft seats are mounted at two sides of the long shaft; the shaft seats are fixed on a connecting plate through bolts; a mechanical arm transmission device is mounted on the long shaft; the mechanical arm transmission device is used for grasping a beaker on a heating device and the positioning supporting plate; the mechanical arm transmission device is controlled through a display PLC (Programmable Logic Controller).

The invention relates to a three-dimensional-scanning-based steel structure digital detection method capable of conveniently and accurately detecting structural dimensions and linear shapes of a complex curved specially-shaped structure and a super-large-sized structure in a steel bridge. On the basis of the design structure, a theoretical data model is constructed by using three-dimensional digital modeling software and control points are arranged; according to operation requirements of 3D scanning equipment, point cloud data collection is performed on a bridge steel structure entity in a suitable environment, carrying out point cloud cleaning and splicing processing, and generating a detection data model by using special software; and carrying out fitting on the theoretical data model and the test data model based on a certain rule and determining a deviation between the theoretical data model and the detected data model to obtain a deviation analysis report of a manufacturing structure and a design structure. The key points of the steel structure digital detection method include creation accuracy of the theoretical data model, measurement accuracy of a 3D scan measurement generation test data model, and deviation analysis processing rules of the two data models. The steel structure digital detection method has the wide application range and can be applied to structural detection under conditions of three-dimensional scanning measurement.

The invention discloses a virus detection sensor, and a device and a method for detecting virus concentration. The sensor comprises a bracket, a detection probe and a capillary glass tube. The inner wall of the capillary glass tube is modified with an antibody specifically bound to a virus to be detected. The detection probe comprises a detection body and a photoelectric conversion circuit. The photoelectric conversion circuit comprises a photosensitive element and a light source. The detection body is fixed on the bracket, and is provided with a circular detection channel in the center. The capillary glass tube penetrates through the detection channel, and is fixed on the bracket. A first groove and a second groove are symmetrically formed in the side wall of the detection channel. The light source is fixed in the first groove, and the photosensitive element is fixed in the second groove. The sensor is simple in structure and ingenious in design. The shading performance of a magneticball and photoelectric conversion are ingeniously combined, and detection is convenient and rapid. The device is simple in structure, can realize automatic detection of viruses, and improves the efficiency and precision of detection. The method is simple, uses a standard curve method for detection, and is convenient and fast.

The invention relates to a method and a device for detecting battery separator paper trachoma, wherein the method comprises shielding an external light source, leading only one surface of separator paper to be illuminated by the light source on one position of a transmission line, and then detecting whether the surface of the separator paper which is not illuminated has light to transmit or not, and then judging whether the separator paper has trachoma or not. The device for achieving the method comprises a detection box whose periphery is closed, and a light source and a photoreceptor which are respectively arranged on both sides of a plane wherein the separator paper is crossed over in the detection box, wherein the two lateral surfaces which are opposite of the detection box body are both provided with at least one permeating hole for the separator paper to cross over whose width is equal to the width of the separator paper, and the width of the permeating hole is equal to the width of the separator paper. The method can automatically, rapidly, effectively, efficiently and continuously detect battery separator paper trachoma, which overcomes the shortcomings of artificial naked eye detection which has big randomness, bad accuracy, low efficiency and the like, and can be widely used in the field of scroll trachoma detection.

The invention relates to the technical field of product detection, and particularly relates to a glass fiber reinforced polyester corrugated plate impact performance test device. The glass fiber reinforced polyester corrugated plate impact performance test device comprises a rack; the upper-end extending part of the rack is fixed with a height adjustment device; the lower end of the height adjustment device is fixed with a steel ball release device; a supporting rod for placing a glass fiber reinforced polyester corrugated plate sample is arranged below the steel ball release device; a laser rangefinder and a monitoring camera are arranged on the steel ball release device; and the laser rangefinder and the monitoring camera are connected with a display PLC respectively. The glass fiber reinforced polyester corrugated plate impact performance test device has the advantages that control is facilitated; the operation is convenient; manual operation is replaced to eliminate human interference factors; the detection quality and the efficiency are improved; and the detection automation is realized.

The invention relates to the technical field of automobile part detection equipment, in particular to automobile synchronizer gear ring outer groove diameter inspection equipment. The equipment comprises a rack, a tensioning mechanism, a 90-degree rotating mechanism, a pushing mechanism, a longitudinal moving mechanism, a clamping ring, a lifting mechanism and an opposite distance measuring mechanism. The 90-degree rotating mechanism is mounted on one side of the top of the rack; the tensioning mechanism is mounted at the output end of the 90-degree rotating mechanism; the pushing mechanism ismounted on the other side of the top of the rack; the clamping ring is mounted at the working end of the longitudinal moving mechanism; an opening is formed in the rack; the opening is located at thebottom part of the tensioning mechanism; the lifting mechanism is located at the bottom of the rack; and the opposite distance measuring mechanism is mounted at the working end of the lifting mechanism. According to the technical scheme, feeding, fixing and diameter measuring tasks of the synchronizer gear ring can be achieved for the synchronizer gear ring, detection automation is achieved, andpersonal safety of workers is protected to the maximum extent.

The invention discloses a circle center positioning method in ultrasonic detection of a shoal buried pipeline. The circle center positioning method is based on a time of arrival and least square method, and comprises the steps of: constructing a simplified bright spot model of the buried pipeline; using a MATLAB to design simulation parameters to obtain a simulated echo signal; constructing a simple single-channel ultrasonic transmitting and receiving experimental platform in a laboratory environment; simulating a shoal complex environment, adding Gaussian noise with a signal-to-noise ratio being a certain threshold value into an original experimental echo signal to obtain an echo signal; performing echo TOA estimation on the echo signal by adopting a maximum amplitude method, a characteristic parameter correlation detection method and a fast energy center convergence method respectively, and selecting the optimal estimation method therefrom; calculating a sonic path distance between atransducer and a theoretical mirror bright spot according to the simplified bright spot model and echo TOA estimation; and fitting a pipeline circle center objective function according to the sonic path distance and calculating an approximate numerical solution, taking the approximate numerical solution as initial coordinates, and calculating a precise solution of the circle center of the pipeline through iterative operation.

The invention discloses an automatic detection mechanism of an automobile air-condition compressor valve body. The automatic detection mechanism comprises a machine frame, wherein the machine frame is provided with an index plate through a rotary shaft, the side face of the index plate is provided with at least three station grooves, the rotary shaft is connected with a driving shaft used for driving through a rotary shaft transmission assembly, the driving shaft is connected with a cam through a cam transmission assembly, the position, on one side of the index plate, of the end face of the machine frame is provided with a detection part, the detection part comprises a fixed base and a lifting detection head, an elastic part is disposed between the lifting detection head and the fixed base, the top of the lifting detection head extends to one side to form a ball head stretching into the upper concave spherical face and the lower concave spherical face of the valve body, the bottom of the lifting detection head extends to one side to form a bending portion, and the curved face of the cam abuts against the end face of the bending portion. The automatic detection mechanism achieves detection automation of the valve body, improves detection efficiency, reduces labor intensity of workers, and guarantees stability and reliability of transmission precision.

The invention relates to an automatic test device for the performance of a temperature sensor in a fire damper and a test method thereof. The test device includes a water bath, a fire damper, and a display PLC controller; a vertical electric pusher is fixed on one side of the water bath. Rod, the top of the telescopic rod of the electric push rod is provided with a fixed cap, the upper part of the fixed cap is fixed with a vertical rod, the vertical rod is fixed with a monitoring camera, the side of the fixed cap is fixed with a horizontal rod above the water bath, and the horizontal rod has Clamping device; the connecting wire of the temperature sensor sample on the fire damper is fixed by the clamping device on the horizontal bar so that the temperature sensor sample is suspended on the horizontal bar; the temperature control of the PLC controller and the water bath are respectively displayed. Devices, electric push rods, surveillance cameras, fire dampers, and temperature sensor samples on the fire dampers are connected by control wires. The invention replaces the traditional manual operation test, reduces human interference factors, realizes detection automation, and improves detection quality and efficiency.

The invention discloses a device for automatically testing reliability of a fire-fighting electromagnetic valve. The device comprises a water pressurization pump, a reservoir, a test box and a bracket, wherein the test box is placed on the bracket; a water leakage sensor pad is arranged in the center position of the bottom in the test box; a fire-fighting electromagnetic valve sample is placed onthe water leakage sensor pad; the inlet end of the fire-fighting electromagnetic valve sample is connected with the water pressurization pump through a connecting pipe, and the outlet end of the fire-fighting electromagnetic valve sample is connected to the reservoir through a drainage pipe; the water outlet of the reservoir is connected with the water inlet of the water pressurization pump through a water pipe so as to form water circulation; a water guide groove is formed around the bottom in the test box, a water guide pipe is arranged at the lowest point of the water guide groove, and thewater outlet of the water guide pipe is connected with the reservoir; PTC ceramic heating devices are arranged at the lower parts of the left and right sides in the test box; and a cooling pipe is arranged on the inner wall of the test box and is connected with a refrigerating machine. The device disclosed by the invention can automatically and continuously complete tests under the conditions of normal temperature, high temperature, low temperature, sealing and the like and can automatically make test conclusions at the time points of all segments.

The invention relates to the technical field of plastic detection, in particular to an automatic plastic appearance detection device. The automatic plastic appearance detection device comprises a shell, a machine table, a product discharging disc, a feeding disc placing mechanism, a product carrying mechanism, a CCD appearance detection module and a qualified product placing mechanism, the machinetable is fixedly arranged in the shell, the shell is arranged on the machine table in a sleeving mode, the CCD appearance detection module is fixedly installed on the machine table, a first product transfer shaft is fixedly installed on the machine table on one side of the upstream of the CCD appearance detection module, a second product transfer shaft is fixedly installed on the machine table onone side of the downstream of the CCD appearance detection module, and the product carrying mechanism is arranged on the machine table between the first product transfer shaft and the second producttransfer shaft. By means of the structure, automatic plastic product detection is achieved, the product appearance is detected through automatic equipment, the turnover space is reduced, the turnovertime is shortened, the detection efficiency is further improved, the detection accuracy is improved and the production cost is reduced.

The invention relates to a method and a system for detecting DC bus branch crossing. The method comprises the following steps: detecting whether a DC bus has AC signals, and judging whether there is an insulation fault between the DC bus and a DC bus branch; if the DC bus has no AC signal and there is no insulation fault between the DC bus and the DC bus branch, switching on the test bridge of a DC bus to generate an AC signal; and inspecting another DC bus branch to judge whether the another DC bus branch has AC signals, and if the another DC bus branch has no AC signal, determining that there is crossing between the DC bus branch and the another DC bus branch. The method for detecting DC bus branch crossing is simple and easy, there is no need for operator intervention, and automatic detection is realized.

The invention discloses an automatic fire extinguisher injection electric insulation performance testing device, which belongs to the field of product detection. The device comprises a pneumatic clamping and releasing mechanism, an electric insulation testing mechanism, an automatic fire extinguisher positioning mechanism and a PLC, wherein the automatic fire extinguisher positioning mechanism is used for adjusting a position of the fire extinguisher so as to ensure an injection thing of the fire extinguisher to be between a conductive pin and a metal plate; the pneumatic clamping and releasing mechanism is used for clamping or releasing an injection nozzle of the fire extinguisher so as to ensure the injection nozzle to be fixed during the testing process and improve the testing accuracy; the electric insulation testing mechanism is used for forming the test; and the PLC is used for controlling the pneumatic clamping and releasing mechanism, the electric insulation testing mechanism and the automatic fire extinguisher positioning mechanism to complete automatic control. Labor environment is improved, human disturbance factors are reduced, automatic detection is realized, and detection quality and efficiency are improved obviously.

The invention provides a non-contact internal thread detection device, which belongs to the technical field of internal thread detection, and comprises a reflector, a spectrum confocal sensor and a rotating assembly; the rotating assembly comprises a connecting sleeve, a connecting pipe, a fixing frame, a rotating mechanism, a front guide plate, a rear guide plate, a cable guide block and a cable winding cylinder; the fixing frame comprises a front end plate, a rear end plate and a connecting plate, and a cable port is formed in the rear end plate; the front end of the connecting sleeve is provided with a reflector, the rear end is fixedly connected with the front end of the connecting pipe, and the side wall is provided with a light outlet; the connecting pipe rotationally penetrates through the front end plate and is driven by a rotating mechanism to rotate, and the rear end is fixedly sleeved with the front guide plate; the rear guide plate is connected with the front guide plate through a connecting piece; the cable guide block is fixed on the rear side of the rear guide plate; the cable winding cylinder is located between the rear guide plate and the rear end plate, and the rear end of the cable winding cylinder is fixed to the rear end plate. According to the invention, automatic and non-contact detection of internal threads can be realized, and the detection precision and the detection speed are improved.

The invention relate to a preparation method of microporous reaction plates, a kit and a detection method of the kit. The detection method of the kit comprises the follow steps that (1) microporous reaction plates required by a reagent are balanced to room temperature; (2) concentrated washing liquid and deionized water are mixed according to a ratio of 1: 20 to form working washing liquid; (3) astandard substance and a quality control substance are redissolved with purified water according to the marked volume; (4) 100-200 [mu]l of a redissolution reagent are separately added into each hole;(5) then 25-100[mu]l of the standard substance, the quality control substance or specimen to be tested are sequentially added; oscillating incubation is carried out for 10-30 minutes; (6) the platesare washed for 4-6 times with the working washing liquid, pat dry is carried out; and (7) 50-200 [mu]l of enhancement liquid is added to each hole, slow oscillating is carried out for 5min, and fluorescence counting is carried out in a fluorescence reading device. The method reduces the risk of misoperation and pollution caused by the introduction of a preparation container; and after a tracer ismanufactured into microspheres, the microspheres are placed in the microporous reaction plates, so that the loading amount does not need to be surplus, the waste of the reagent is reduced, and the cost of the reagent is reduced.

The invention relates to the technical field of screw thread detection, and specifically discloses an automatic rotation fixing device and method for a screw thread ring gauge. The automatic rotation fixing device for a screw thread ring gauge includes a base plate, a housing over the base plate, a vertical plate at the front of the housing, ground wire connection screws on the base plate, a DC motor in the housing, a motor flange which is fixedly connected with a rotating shaft of the DC motor, a clamping thread ring which is fixedly connected with the motor flange, a claw which is fixedly connected with the clamping thread ring, and a motor forward-counter-rotating switch on the vertical plate. The automatic rotation fixing device for a screw thread ring gauge controls the motor forward-counter-rotating switch to control on / off and rotation of the DC motor so as to detect the outside thread of a screw. The automatic rotation fixing device and method for a screw thread ring gauge can greatly reduce the detection time and improve the detection work efficiency, and have important meaning for automation and intelligentization of screw thread detection.

The invention relates to a cigarette case packaging detection process. The cigarette case packaging detection process sequentially comprises the steps of conveying, detecting, removing and collectingand is realized based on a cigarette case packaging detection system. The cigarette case packaging detection system is sequentially provided with a paper feeding mechanism, a detection mechanism, a removing mechanism and a collecting mechanism in the conveying direction of a conveying belt. To-be-detected packaging paper is conveyed to the detection mechanism at a uniform speed piece by piece at intervals through the paper feeding mechanism. Good products or defective products are detected through the detection mechanism. The good products enter the rear collecting mechanism directly through agood product channel. The defective products are introduced into a defective product channel to enter the rear collecting mechanism through the removing mechanism. According to the cigarette case packaging detection process, an integrated production process is formed through the conveying and detection of the to-be-detected packaging paper and the separating, conveying and collecting of the goodproducts and the defective products, and detecting automation is realized. All working procedures are tightly matched through a device, so that the detection efficiency and the detection accuracy areimproved, and the labor intensity is reduced.

The invention discloses a cylindrical part slope angle measurement method and an angle measurement device thereof. The cylindrical part slope angle measurement method comprises the following steps of:a profile diagram acquisition step, which is implemented by acquiring a projection profile diagram of an inclined section of a cylindrical part; a parameter marking step, which is implemented by performing parameter marking on the drawn projection profile map; and an angle calculation step, which is implemented by calculating a slope angle of the cylindrical part through using a formula. When thecylindrical part is horizontally placed along the axis, all-attitude online wedge angle calculation under the conditions of axial 360-degree rotation and circumferential 360-degree rotation can be realized; the design and application of a detection system based on the algorithm can quickly and simultaneously detect a plurality of parts, simplify the detection steps, realize the detection automation and improve the detection efficiency; and the application of the cylindrical part slope angle measurement method does not need a special fixture to place a part for detection, so that errors causedby non-concentricity of part clamping, non-coaxiality of a light source and the part and the like are reduced. The invention provides an algorithm for detecting the slope angle of the cylindrical part, and further provides the design of the detection system based on the algorithm.

The invention provides a mealybug detection treatment device. The device is used for fruit and vegetable quarantine treatment. The device comprises a base, a detection assembly, a radiation assembly,a first housing and a second housing. Fruits and vegetables are arranged on the base; the detection assembly is arranged on the base and used for detecting mealybugs on the fruits and vegetables; theradiation assembly is arranged on the base, located at one side of the detection assembly and used for conducting radiation treatment on the mealybugs; the first housing is arranged at the outer sideof the detection assembly; the second housing is arranged at the outer side of the radiation assembly. According to the mealybug detection treatment device, by using a structure combining the detection assembly with the radiation assembly, the detection and treatment continuity can be improved, the labor intensity is lowered, and accordingly the fruits and vegetables are subjected to quarantine detection; the aim of inhibiting the fecundity of the mealybugs is achieved, the fruits and vegetables can also be quickly and accurately examined before radiation treatment, and detection automation and convenience are achieved.

The invention discloses an automatic weighing device for the water purification amount of a drinking water purification machine. The automatic weighing device comprises the parts of a water purification machine sample, a high-precision electronic scale I, a high-precision electronic scale II, a container barrel I, a container barrel II, an electronic control three-way valve, a water distribution system, a water reservoir, a circulating water pump, a PLC and the like. According to the automatic weighing device, a water container does not need to be replaced manually, thus the labor intensity isreduced, detection automation is achieved, and the detecting quality and efficiency are improved; and in addition, through a weighing method, the cumulative sum of multiple weighing serves as the total water purification amount, the water purification weight difference between the container barrels each time is extremely small, thus the total cumulative error is also small, the testing result ismore accurate, the detecting quality is improved, and the detecting dispute is avoided.

The invention provides an automatic CCD detecting device comprising a device base, a vibrating disk base, a workbench rotating disk, a vibrating disk, a CCD detecting device assembly, a feeding grooveand a discharging groove. The workbench rotating disk is arranged on the device base. The vibrating disk is arranged on the vibrating disk base. The device base and the vibrating disk base are arranged side by side. The vibrating disk is connected with the workbench rotating disk through a feeding groove. The feeding groove is tangent to the head end of the workbench rotating disk. The CCD detecting device assembly is arranged on the device base. At least one CCD detecting device is provided with a 360-degree camera. The discharging box is arranged at the tail end of the workbench rotating disk. The upper portion of the discharging box is provided with at least one mechanical arm. The automatic CCD detecting device is provided with six CCD detecting devices, so that product detection automation is achieved, the possibility of detection missing or wrong detection caused by manual factors during manual detection is reduced, the detection efficiency and yield of products are improved, and manual cost is reduced.

The invention relates to a household aerosol commodity quantity variable inspection method and a device. A volume conversion method is adopted so that firstly aerosol contents are transferred to a density bottle, and negative pressure of the density bottle is controlled by a vacuum pump and an extraction valve in the process of transferring, the negative pressure is -90KPa-95KPa, and the aerosol contents are controlled to release by an introduction valve. Then a relative density method formula is used to calculate quality of detected aerosol contents. The device comprises a port valve, a pipeline, the vacuum pump, the extraction pump, the introduction valve and the density bottle, the density bottle is connected with the extraction pump and the introduction valve by the port valve, the extraction valve is connected with the vacuum pump, and a material inlet of the introduction valve is connected with the port valve which is connected with a material outlet of a detected aerosol bottle. A sliding guide rail and a stepping motor are arranged below the detected aerosol bottle. A principle of differential pressure is adopted to solve the problem of transferring of the aerosol contents, solve the problem of control and transfer of the aerosol contents, and confirm the rules suitable for legal system measurement supervision.