58 results about "Filter test" patented technology

The invention provides a method for correcting a flow coefficient of a large-diameter regulating valve, which belongs to the technical field of aero-engines and comprises the following steps: filtering original test data by adopting a tracking differentiator to obtain filtered test data; constructing a regulating valve flow characteristic model, and retrieving an original model theoretical flow coefficient by setting a simulation condition which is the same as a test working condition; constructing a flow coefficient calculation model, inputting the filtered test data into the model, and calculating a real flow coefficient; establishing a flow coefficient deviation prediction model based on a random forest algorithm, substituting the difference value between the real flow coefficient and the theoretical flow coefficient into the model for training, obtaining a flow coefficient prediction deviation value, superposing the flow coefficient prediction deviation value with the theoretical flow coefficient to generate a new flow coefficient, and replacing the theoretical flow coefficient of the original model with the new flow coefficient; and new test working condition data are obtained, the steps are repeated, and the flow coefficient is continuously updated. According to the scheme, the adjusting valve transition state working condition flow coefficient and the flow calculation accuracy are improved.

The invention discloses a software defect positioning method and system based on multi-stream model fusion. The method comprises the following steps: firstly, filtering test cases with relatively high coverage rate by adopting a test case reduction strategy, and weighting the residual test cases by utilizing a test case weighting strategy so as to reflect the capability of the test cases for revealing defects; frequency spectrum features, variation features, local semantic features and global structure features are extracted, the frequency spectrum features and the variation features are calculated through a weighted suspicious degree formula, and the local semantic features and the global structure features are obtained through a deep learning technology; and finally, fusing the four types of features, and inputting the fused features into a defect positioning predictor trained by a multi-layer perceptron to obtain a suspicious degree score of each code statement, so that suspected defect statements are screened out by taking the suspicious degree scores as positive correlation indexes of the defect statements, and software defect positioning is realized. According to the method, the code defect mode can be effectively disclosed, so that the accuracy of software defect positioning is improved.

The invention provides a test question similarity rapid detection method and system based on content understanding. The test question similarity rapid detection method comprises the steps of performing semantic cleaning and content standardization on test questions to be processed, and obtaining test question data after content standardization; performing structured attribute filtering on the test question data after content standardization to obtain filtered test question data; index similarity comparison and examination point similarity comparison are carried out on all the test questions corresponding to the filtered test question data, and index similarity numerical values and examination point similarity numerical values of all the test questions are obtained; according to the index similarity values and the examination point similarity values among all the test questions, determining comprehensive similarity values among all the test questions; and extracting and displaying each pair of test questions with the comprehensive similarity value exceeding a preset similarity value. The system comprises modules corresponding to the steps of the method.

One or more instruments generate test result data. The test result data include patient data and QC data. The test result data is provided to a QC data flow system via a local network, which filters the test result data (e.g., using a set of rules) to extract the QC data. The QC data is provided to a cloud-based QC data management platform via an external network. The cloud-based QC data management platform analyzes the QC data and provides a result back to the QC data flow system. The QC data flow system forwards the result to middleware or the instrument, which triggers a corrective action based on the result as appropriate.WO

Disclosed herein are example filtration test assemblies comprising an inner housing and an outer housing. The inner housing and outer housing define a fluid chamber between them, and a filtration element can be positioned in the fluid chamber. The devices disclosed herein can, in one example, separate or partially separate water from emulsions by passing the emulsions across the filtration element.

Method for performing a filter test, wherein a) a plurality of hoses (5) are or are laid from a first cleanroom (17.1) of a first, higher cleanroom class to a second cleanroom (17.2) of a second, lower cleanroom class, wherein a sterile filter set (1) is provided in the first cleanroom (17.1), wherein at least one fluid container (19), at least one drain container (21) and a filter test device (23) are provided in the second cleanroom (17.2), wherein b) at least one first hose (5.1) of the plurality of hoses (5) is or becomes fluidically connected to the sterile filter set (1) with at least one first end, wherein c) the at least one first hose (5.1) of the plurality of hoses (5) is or becomes fluidically connected to the at least one fluid container (19) with at least one second end, wherein d) at least one second hose (5.2) of the plurality of hoses (5) is or becomes fluidically connected to the sterile filter set (1) with at least one first end, wherein the at least one second hose (5.2) of the plurality of hoses (5) opens into the at least one drain container (21) with at least one second end, wherein e) the filter set (1) is rinsed by passing a rinsing fluid from the at least one fluid container (19) through the filter set (1) into the at least one drain container (21), wherein f) after rinsing the filter set (1) the second end of the at least one first hose (5.1) is separated from the fluid container (19) and connected to the filter test device (23) in a flow-related manner, wherein g) a filter test is carried out using the filter test device (23).

The invention provides an optical filter testing device and a testing method. The testing device at least comprises a detection box, a plurality of light source boxes and a box body position driver, high power of test light wave bands and power consistency among different wave bands are achieved through the narrow-band light sources arranged in an array mode, interference of external stray light is effectively avoided through the reasonable design of the light shielding box body, the purity of the test environment is guaranteed, and the test efficiency is improved. In addition, according to the orientation particularity between the optical filter and the incident light in the diamond NV color center measuring system, a traversal testing device in a specific deflection angle is additionally arranged, and the filtering effect of the optical filter under different light incident angles is achieved.

The utility model discloses a filter test clamp, the filter comprises a main body and a shielding cover adhered to the main body through colloid, the filter test clamp comprises a base, a test board arranged on the base, an upper cover hinged to the base, an I / O pin arranged on the test board, and a clamping piece arranged on the base and used for clamping the I / O pin. The radio frequency connector simultaneously penetrates through the base and the test board, the base, the test board and the upper cover are all made of metal, and the base and the upper cover are hinged through a metal shaft. According to the scheme, the test fixture improves the grounding performance of the filter during test, and solves the problems of poor grounding performance and inaccurate test result caused by gluing of the main body and the shielding cover of the filter.

The application discloses a kind of keyword-driven spaceflight TT&C software automation test method and system, method includes: based on the formation keyword of spaceflight TT&C software operation process;Spaceflight TT&C software operation process uses multiple programming languages;Keyword uses uniform programming language;Configuration test case template, template element is defined based on test case template and forms test case;Wherein, at least one of natural language, keyword and test data defines template element;According to the attribute of test type, filter test case and pack the test case filtered into test suite;Execute test case in test suite and collect execution, according to mapping rule, fill execution into corresponding test document template to form test document.The application can complete multiple complex spaceflight TT&C software test by the keyword and test case design compatible with multiple programming languages, realize that test script writing language is uniform and forms general operation to multiple spaceflight TT&C software.

The invention relates to the technical field of video compression, in particular to a motion compensation time domain filtering weight constraint method and system based on data driving, and the method comprises the following steps: collecting video samples covering a plurality of scenes, and constructing a video sample set; adjusting coding task parameters of motion compensation time domain filtering so as to reduce operation time; according to the video sample set, obtaining a block weight factor through a contrast filtering test; and constraining the block weight of the motion compensation time domain filtering by using the block weight factor. According to the method, the filtering performance of the MCTF can be improved on the premise that the calculation complexity is not increased, and low cost and high benefits are achieved.

The utility model relates to filter testing device technical field discloses a kind of self-cleaning filter testing device, including first box and second box, air duct is opened in the first box, flow equalizing plate and filter piece mounting portion are sequentially arranged from left to right in the second box, fan mounting portion is installed in the side of the second box, and cleaning assembly is also provided in the second box, for cleaning filter piece, the filter efficiency, resistance, dust capacity of medium filter can be detected under different cleaning water pressure and flow by filter piece mounting portion and cleaning assembly, filter efficiency, resistance, dust capacity of filter after cleaning, when detection is completed, it can directly clean, it is convenient for user operation, solve the problem that the cost of test bench in prior art is higher, and not easy to operate.

The application provides a functional filter test filter element and application thereof, and comprises a filter element body with a three-stage step structure with a porosity of 51-75% which is made of thermoplastic polymer microspheres through sintering or chemical bonding, ultraviolet crosslinking, the thermoplastic polymer microspheres are pretreated before preparation and molding, the filter element body is surface treated after preparation and molding, a hydrophilic group is added to the surface of the filter element body and grafting is carried out to connect molecules, groups or functional groups, and a plurality of through holes with staggered hole positions are formed in the upper end and the lower end of the filter element body respectively. The filter element has a great specific surface area, effectively increases the filtering and capturing capacity in a limited space, and can sensitively capture the target analyte during use; in addition, the filter element is surface hydrophilic treated, has strong hydrophilicity, has small resistance when liquid passes through, and can pass through at 100%; various chemical modifications or grafting are carried out on the surface of the filter element, so that the filter element is suitable for a variety of detections and is all-purpose.

The utility model relates to a filter test tool, belongs to the technical field of filter test, and solves the problems of unstable filter clamping and low test efficiency in the existing filter test. The clamping device comprises a bottom plate, a clamping plate and a clamping assembly. The clamping plate and the clamping assembly are sequentially arranged in the length direction of the bottom plate. The clamping plates are used for clamping a filter and comprise the first clamping plate and the second clamping plate. The clamping assembly is connected with the first clamping plate; the clamping assembly is used for clamping the clamping plate; the bottom plate is provided with a first sliding groove and a second sliding groove. A protrusion is arranged on the lower portion of the second clamping plate and can slide in the first sliding groove and the second sliding groove so as to drive the second clamping plate to slide on the bottom plate. Screw grooves are formed in the positions, corresponding to the first sliding grooves, of the lower portion of the bottom plate and used for inserting screws to fix the second clamping plate. According to the utility model, filters with different sizes can be tested, the clamping is stable, and the testing efficiency is high.

This invention relates to an engine acoustic-vibration multi-information fusion diagnostic device and fault diagnosis method. It removes interference components from the acoustic time-domain data of a faulty engine; through three levels—acoustic-vibration time-domain feature correlation, acoustic order data, and vibration order data—it uses a lookup table method to quickly classify and locate fault features, thereby rapidly determining the possible fault types of the engine; it employs time-domain / frequency-domain multi-layer signal fault information extraction methods to better handle strongly periodic abnormal noise signals and non-steady-state signals, thus facilitating the identification of fault types with non-steady-state noise characteristics. Compared with existing engine on-site abnormal noise diagnostic schemes, this method has good adaptability, and by comparing the features of multi-dimensional information results and performing correlation analysis, it can effectively filter external interference signals during the testing process and locate the source of abnormal noise from a higher-dimensional mechanistic level.

The application discloses a filter test fixture convenient to adjust, and particularly relates to the technical field of test fixtures.The interval between the first clamping plate and the second clamping plate can be adjusted by adjusting the sleeve to slide on the supporting strip, so that the test clamping operation of different models of filters can be satisfied by the interval adjustment between the first clamping plate and the second clamping plate.Secondly, during clamping, the first electric push rod is elongated to move, so that the adjustable elastic clamping assembly is extruded by the inclined plane plate to move, so that the adjustable elastic clamping assembly can complete the automatic clamping operation of the filter, the filter test is more convenient, and the automatic clamping and the adjustment mode are not conflicted with each other, so that the test fixture can satisfy the positioning of filters of various models, different test fixtures do not need to be invested, and therefore, the production cost can be reduced, and the subsequent disassembly and replacement operation can be avoided.

The utility model discloses an adjustable filter material tester, and relates to the technical field of testing. An adjustable filtering material tester comprises a filtering tester, a supporting base is fixedly connected to the bottom of the filtering tester, the interior of the supporting base is of a cavity structure, a supporting adjusting structure is located on the filtering tester, and through cooperation of the supporting base, a two-way threaded rod, a sliding frame, a first connecting plate, a second connecting plate and a mounting frame, the filtering material can be adjusted. The two-way threaded rod can drive the four universal wheels to move downwards at the same time, so that the four universal wheels can conveniently support the filtering tester, the filtering tester can be conveniently moved, and when the filtering tester is used, the four universal wheels can be stored in the supporting base, so that the filtering tester is convenient to move. The supporting base can provide stable support for the filtering tester, so that the filtering tester is prevented from sliding or shifting due to external force in the using process, and the accuracy of a filtering material testing result is further improved.

The utility model relates to the technical field of mask detection equipment, and discloses an efficient mask particulate matter filtering and testing device which comprises a detection box, a first movable groove and a second movable groove are sequentially formed in the bottom of an inner cavity of the detection box from front to back, and moving assemblies are arranged in the first movable groove and the second movable groove; and a clamping assembly is arranged above the moving assembly. Through the arrangement of the moving assembly and the clamping assembly, a worker places the two ends of a mask on the corresponding supporting platforms respectively, then the two ends of the mask are fixedly clamped through the positioning rods, the telescopic springs and the clamping plates, then the two ends of the mask are pulled in the opposite directions through the moving assembly, and therefore the mask is leveled; and then detection is carried out through a detection instrument in the detection box, so that the quality and efficiency of the mask particulate matter filtering test are improved, and the accuracy of a test result is improved.

The utility model discloses a filter system support and a filter testing system, and relates to the field of filtering testing. The filter system support comprises a base table, a vertical frame and a clamping assembly, the vertical frame is fixedly arranged on the base table, at least two loading rods are arranged on the vertical frame, the clamping assembly comprises a first clamp and a second clamp, and any clamp can be arranged on the loading rods in a sliding mode. According to the filter system bracket provided by the utility model, the liquid storage bag is placed on the spreading plane, and a plurality of loading rods and the clamping components are matched to establish a multi-layer platform, so that the spatial layout is expanded, and the position of the filter and the path of a pipeline are conveniently managed; the first clamp and the second clamp are arranged on the loading rod in a sliding mode so that the positions of the pipeline and the filter can be flexibly adjusted. The pipeline and the filter are integrated through a multi-layer platform established by matching the loading rod and the clamping assembly, so that the placement space of equipment can be optimized, the interference of structural layout can be avoided, and an operator can arrange, manage and control the pipeline and the filter conveniently.

A platform for filter flow contrast test and filter display belongs to the technical field of heating water supply experiment equipment. It includes a water tank, a submersible pump arranged in the water tank, a double-filter test unit arranged above the water tank, the double-filter test unit including an intermediate pipeline and a filter one to be tested and a filter two to be tested, two ends of the filter one to be tested and the filter two to be tested being communicated with the intermediate pipeline through pipelines to form corresponding test loops, each of the two test loops being provided with a water outlet pipeline corresponding to the water tank, each of the pipelines in the test loops and the water outlet pipelines being provided with a ball valve for controlling water flow on-off, a lower end of the intermediate pipeline being communicated with the submersible pump and being connected with an electric pressure pump, and the intermediate pipeline being provided with a pressure gauge and a circulating pump. The utility model can independently test the flow of a floor heating filter and a pre-filter, compare the parallel flow and display real-time data under the same pressure condition, and is an integrated experiment platform for filter flow contrast test and filter display.

A peritoneal dialysis ("PD") system comprising a housing, a PD fluid pump housed within the housing, a filter set including a filter housing and a hydrophilic filter membrane that divides an upstream chamber within the filter housing from a downstream chamber, a dual lumen patient line including an unused PD fluid lumen in fluid communication with the upstream chamber and a used PD fluid lumen in fluid communication with the downstream chamber, a pressure sensor positioned and arranged to provide a pressure sensor output indicative of the pressure of the downstream chamber of the filter housing, and a control unit configured to perform a pressure integrity test of the hydrophilic filter membrane by monitoring the pressure sensor output over a period of time, wherein the pressure sensor output indicates a negative pressure applied to the downstream chamber by the PD liquid pump. A pressure drop test for evaluating the filter membrane is also disclosed.

The utility model discloses a filter test electrode, which relates to the technical field of filter test and comprises a mounting seat, a contact, a reciprocating assembly and a fixing element, the contact can be detachably mounted at the upper end of the mounting seat, a plurality of grooves are arranged on two sides of the contact, the inner walls of the grooves are used for contacting pins of a product to be tested, and the reciprocating assembly is fixed on the mounting seat. The mounting base is mounted on the fixing element through the reciprocating assembly, and the mounting base can move in a reciprocating mode and can make close contact with the pins of the to-be-tested product under the action of the reciprocating assembly. The utility model is convenient to use on automatic test equipment, and can adapt to various filter products with different sizes.

The utility model relates to the technical field of filters, and discloses a high-temperature-resistant filter test bed which comprises a filtering tank, a second cover top is installed at the top end of the filtering tank in a threaded mode, a servo motor is fixedly installed on the right side of the top end of the second cover top, and a second gear is fixedly installed at the output end of the servo motor. A filtering disc is fixedly installed at the lower end in the filtering tank, a filter is rotatably installed in the middle of the filtering disc, a first cover top is installed at the top end of the filter in a threaded mode, a rotating shaft is fixedly installed in the middle of the first cover top, and a first gear is fixedly installed in the middle of the rotating shaft. According to the utility model, the centrifugal force of the filter is increased by quickly rotating the filter, the water outlet pipe is finally opened for discharging, the filtering effect is accelerated, the liquid to be filtered is secondarily filtered by the filtering disc, so that the filtering effect is better, and the problem that the inside of the filtering tank is expanded due to heat and contracted due to cold during heating is solved; and the situation that the valve is damaged due to too large air pressure is prevented.

The utility model relates to the technical field of probe cards, in particular to a vertical probe card for reducing filter test parasitism. Comprising a PCB substrate, metal circuit wires are laid on the upper surface and in the PCB substrate, and at least one metal disc is arranged on the upper surface of the PCB substrate; the non-metal cover plate is arranged on the PCB substrate in a covering manner and comprises at least one first mounting hole penetrating through a non-metal cover plate body; the head part of each probe penetrates through the first mounting hole and extends out of the non-metal cover plate, the tail part of each probe is propped against the PCB substrate through an elastic element, the elastic element is always in a compressed state so as to apply an upward thrust to the probe, and the first mounting hole is used for limiting the upward movement of the probe; according to the utility model, a signal path is realized through the probe and the flange rod or the shorter probe, so that the signal transmission distance is shortened, the signal loss in the probe transmission process is further reduced, the area of a grounding loop is reduced, and the parasitic influence caused by the signal loss is obviously improved.

The utility model relates to the field of filter production, in particular to a filter sealing performance detection device, which comprises a bottom plate, a water tank is fixed on the bottom plate, a sliding plate is arranged above the bottom plate, the sliding plate is driven by a test motor to move, a plurality of test cylinders are fixed on the sliding plate, a fixed plate is arranged below the sliding plate, and the fixed plate is fixed on the bottom plate. The tail ends of piston rods of the testing cylinders are fixed to the fixing plate, fixing blocks are symmetrically fixed to the two sides of the lower portion of the fixing plate, rotating shafts rotationally connected with the fixing blocks are arranged on the fixing blocks, the rotating shafts are driven by corresponding rotating motors to rotate, and a supporting plate is fixed between the two rotating shafts. Supporting grooves are evenly formed in the supporting plate, a positioning plate is further arranged on one side of the supporting plate, positioning grooves are formed in the positions, corresponding to the supporting grooves, of the positioning plate, and a plurality of electromagnets are evenly fixed to the supporting plate. The device can carry out sealing test on a plurality of filters at one time, and the test efficiency of the filters is greatly improved.

This application relates to the field of vehicle testing technology, specifically a method and device for determining critical parameters in vehicle slope rollover tests. The method includes: collecting a set of test data from actual vehicle rollovers and dividing it into subsets according to vehicle type; inputting vehicle parameters and test parameters into a forward discriminant model to train the model; calculating a basic inverse model from the forward discriminant model, adding constraints to the output of the basic inverse model, and correcting the basic inverse model using the vehicle parameters and test parameters of the vehicle to be solved; inputting the rollover result into the basic inverse model to obtain an angle range, and filtering test data within the angle range; returning to the operation of training the forward discriminant model until a cutoff condition is met to obtain the target angle range; and finally verifying the rollover critical angle value from the target angle range through actual vehicle angle gradient tests. This application achieves accurate inverse solving from rollover results to test parameters.

The invention provides a texture filtering testing method and device, equipment and a medium, and belongs to the technical field of testing. The texture filtering test method comprises the following steps: determining a combined filtering mode according to a plurality of single filtering modes supported by a to-be-tested unit; determining combined counting information corresponding to the combined filtering mode according to target texel attribute information corresponding to the to-be-detected texture data and single counting information of each single filtering mode corresponding to the combined filtering mode; according to the combined filtering mode, the combined counting information and the to-be-detected texture data, obtaining input data of the to-be-detected unit; the to-be-tested unit is tested based on the input data, a test result of the to-be-tested unit is obtained, and the test result is used for representing whether the to-be-tested unit passes the texture filtering test or not. According to the embodiment of the invention, the number of test cases can be reduced, and the test efficiency is improved.

The invention discloses a filter weighing device and a filter testboard, and the filter weighing device comprises a mounting rack which is provided with a first region and a second region; the weighing assembly is arranged on the mounting frame, and the weighing assembly can move between the first area and the second area; and the weighing module is arranged in the first area, and the weighing module is used for weighing the weight of the weighing assembly. According to the filter weighing device, through the movable weighing assembly arranged between the first area and the second area, weighing of the filter can be achieved without dismounting, the weighing steps are simplified, the weighing difficulty is reduced, the continuity and consistency of testing are improved, errors caused by manual multiple times of assembling are reduced, and the testing efficiency is improved. And the weighing module is arranged, so that the filter can be accurately weighed, and the accuracy of a test result is ensured.

The utility model discloses a water-based ink filtering and testing device which comprises a testing pile casing, a plurality of filters are mounted in the testing pile casing, and each filter is provided with an oil inlet pipe and an oil outlet pipe; an inner baffle plate is fixedly connected in the cavity of the test protection cylinder, and the oiling agent outlet pipe penetrates through the inner baffle plate; the inner baffle divides the cavity of the test casing into a waste liquid cavity, and the discharge end of the oiling agent outlet pipe is located in the waste liquid cavity; a protective cover is detachably mounted on the testing protective cylinder, and the oil inlet pipe penetrates through the protective cover; the protective cover is provided with a test pipeline joint structure, the test pipeline joint structure comprises a guide rail rod fixedly connected to the protective cover, the guide rail rod is slidably connected with a movable push seat, and the movable push seat is provided with a plurality of joint structures matched with an oil inlet pipe. According to the structure, a plurality of test samples can be tested synchronously in the test process, the test efficiency is improved, the test safety is high, and the safety is greatly improved under the protection of the protective cover and the test protective cylinder.

The utility model provides a system for observing the form and pressure drop of a liquid film, and belongs to the technical field of measurement. A test solution in the test solution tank is firstly filtered through the pipeline filter and then conveyed into the bypass valve or the regulating valve through the pump, the filtered test solution does not damage the pump due to excessive impurities and cause frequent maintenance of the pump, and meanwhile, the valve positions of the bypass valve and the regulating valve are simultaneously regulated in the system, so that the maintenance efficiency is greatly improved. The flow of the test solution is controlled by the control device, so that the thickness and different forms of the liquid film in the test assembly are controlled, the pressure gauge is arranged in the system, the system pressure drop of the test solution in different flow states is observed, the process of forming the liquid film from the test solution is easy, the operation is simple, the devices are convenient to install, and the test efficiency is improved. And an experimenter can easily operate the device, and can observe the liquid film more intuitively.

The utility model relates to test fixture technical field, specifically is a kind of filter test fixture, including support plate, fixed structure is equipped on the support plate, the fixed structure includes baffle and fender, baffle is fixedly connected on the support plate, handle is rotatably connected on the baffle, two connecting rods are rotatably connected on the handle, the connecting rod is rotatably connected in connecting block, guiding seat is fixedly connected on the support plate, sliding bracket is slidably connected on the guiding seat, two connecting blocks are fixedly connected on the sliding bracket, mounting plate is fixedly connected on the sliding bracket, rubber block is fixedly connected on the mounting plate, test structure is equipped on the support plate, two fender are fixedly connected on the support plate;In the process of clamping filter, the quick test to filter can be realized, to shorten the time of test, improve the efficiency of test.