31 results about "Filter test" patented technology

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

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 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.

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 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.

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 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 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.

The utility model discloses a testing device for an air filter test of a pneumatic valve of an airplane, comprising a testing block which is internally provided with a testing cavity, the top end of the testing block is provided with a bolt hole, and the left side and the right side of the testing block are respectively provided with vent holes; the bottom end of the bolt plug is arranged in the bolt hole; a compression spring is arranged at the bottom end of the bolt plug and is used for compressing the gas measuring filter; one end of the adapter is arranged in the vent hole, and the end, away from the test block, of the adapter is connected with a universal quick plug. The device is simple in structure, convenient to operate and good in test effect.

A test method for evaluating lubricant performance, including defoaming and filterability, is disclosed. The method involves using a filter testing apparatus comprising a heated tank equipped with a temperature sensor, wherein the heated tank is fluidly connected to a circulation pump and a filter housing equipped with a filter having a pore size equal to or less than 25 micrometers. The heated tank is then filled with lubricant to at least 50% capacity and heated to at least 80°C. The lubricant is then circulated through the filter testing apparatus using the circulation pump, such that the lubricant passes through the 25-micrometer (or smaller) filter at least 5,000 times. A sample of the filtered lubricant is then obtained, and its defoaming properties are measured using ASTM D892.

The utility model discloses an adjustable fixing device for filter testing, which comprises a bottom shell, a supporting plate is arranged at the top of the bottom shell, two baffles are fixed on the outer wall of the top of the supporting plate, uniformly distributed partition plates are arranged between the two baffles, a nut is fixed on the outer wall of one side of one baffle, and the nut is fixed on the outer wall of the other side of the other baffle. A screw is connected into the nut through threads, one end of the screw is connected with an extrusion plate through a bearing, and the extrusion plate is fixed to one partition plate. According to the filter fixing device, the extrusion plates are extruded when the screws rotate, so that a plurality of filters placed between the adjacent partition plates are fixed, the effect that the plurality of filters can be fixed at the same time is achieved, meanwhile, the positions of the partition plates are adjustable, and the filters of various specifications can be fixed conveniently.

The utility model discloses a handheld novel filter testing arrangement, include: base, set up on the testing assembly and the down pressure subassembly of base, testing assembly includes test board, sets up the test groove on test board, sets up I / O needle on test groove and two radio frequency connectors, and radio frequency connector transverse setting, down pressure subassembly includes setting up the fixed column of base, the pressure handle of fixed in fixed column lateral wall, set up the pressure rod of pressure handle below and set up the pressure head of pressure rod bottom, and pressure rod, pressure head and test groove are located in same straight line, when pressure handle is pressed down, pressure rod displacement downward, and pressure head is close to test groove, when pressure handle is lifted, pressure rod displacement upward, and pressure head is far from test groove, the utility model discloses can test the filter of small size, and down pressure subassembly can make filter can keep stable when testing, to be suitable for the filter test of arbitrary size.

The utility model relates to the technical field of engine air inlet particulate matter air filtration clamp test, in particular to a test clamp and a test device for an engine air filtration assembly, which comprises a support base, a bottom cylinder mounted on the support base, and an air inlet upper cover covering an opening at the upper end of the bottom cylinder, a filter element groove is formed in an opening in the upper end of the bottom cylinder and used for containing a to-be-tested filter element, so that the air inlet upper cover and the bottom cylinder are clamped on the upper side and the lower side of the to-be-tested filter element respectively, a sealing state is formed, and filtering testing is facilitated. In conclusion, the utility model provides a filter material testing scheme which is economical and efficient and is not limited by an engine assembly shell. According to the scheme, filter elements of various sizes are allowed to be tested, the research and development progress is accelerated, and the research and development cost is reduced.

The invention provides a test bed data self-adaptive report generation method, and belongs to the technical field of industrial report processing. Sensor data is collected in real time and subjected to multi-level filtering through an anomaly detection module, the first layer adopts a statistical outlier recognition algorithm to remove outliers, and the second layer adopts a physical model rationality test; in the third layer, an optimal network branch path is automatically selected to carry out abnormal sequence marking according to sensor data time sequence characteristics by adopting a report data quality evaluation model constructed by a tree branch decision network, and filtered test data is serialized through a message queue; according to the table cell index information in the template cache, an improved ant colony optimization algorithm is adopted to perform optimal configuration on report parameters, a block matrix algorithm is adopted to process frequency domain analysis data, and a final result is written into a report file, so that the problem that abnormal data is difficult to efficiently identify and filter in a test bed report generation process is solved.

The utility model discloses a filter test multifunctional board clamp comprising a PCB arranged on a filter test board, a first reinforcing rib fixed on the PCB, a plurality of power-up signal interfaces and digital signal interfaces arranged on the first reinforcing rib, and a filter clamp arranged on the PCB. The power-up signal interface is connected with a power interface of the filter test board; the digital signal interface is connected with a high-speed signal interface of the filter test board; the filter clamp comprises a filter mounting plate fixed on the PCB, a first coaxial connector, a first microstrip line, a filter, a second microstrip line and a second coaxial connector which are arranged on the filter mounting plate and are connected in sequence, and a clamp assembly which is arranged on the filter mounting plate and is used for clamping and mounting the filter; and the first coaxial connector is connected with a radio frequency output port on the filter test board.

The utility model discloses an adjustable multi -purpose filter pressure drop test frock belongs to filter test equipment technical field. The frock includes casing, connector and pull rod subassembly, and the casing upper end is open structure, and the connector is with casing screw thread connection, and the casing side is equipped with import, and the connector upper end is equipped with export. Pull rod subassembly is located in the casing, and includes lower pull rod and upper pull rod, and lower pull rod upper end inserts into upper pull rod, and is fixed through adjusting screw and long hole structure, and the adjustable mounting cavity is formed between both, is used for adapting different specifications filter. Upper pull rod upper portion is equipped with joint part, and the joint part is equipped with sealing washer, and the sealing washer is equipped with convex ring and inserts into the annular groove of joint part, realizes the sealing to filter export end. Lower pull rod bottom is equipped with pad, and is through long screw force and is tightly sealed washer with filter. The utility model has structure adjustable, and the advantages such as reliable sealing, strong adaptability, can effectively promote pressure drop test efficiency and application scope.

The present application provides a filter test method and a manufacturing method, which can evaluate the filtration performance of a filtration membrane with high accuracy in a simple manner regardless of the opening shape of the filtration membrane. A filter test method for a filter having a container, a filtration membrane disposed in the container, an input port communicating with a primary side of the filtration membrane, and an output port communicating with a secondary side of the filtration membrane, the test method comprising a wetting process in which the filtration membrane is brought into a wet state; an air injection process in which, after the wetting process, the output port is closed, and air is injected from the input port to increase the pressure on the primary side of the filtration membrane; and a volume measurement process in which, after the air injection process, the output port is opened, and the volume of air leaked from the output port from the time when the pressure on the primary side reaches a predetermined value is measured after an equilibrium state in which the pressure difference between the primary side and the secondary side of the filtration membrane becomes substantially constant is established.

The invention belongs to the technical field of injection impurity filtering, and particularly relates to an injection impurity filtering efficiency evaluation method and system.The method comprises the steps that different filtering parameter combinations are set for different samples or sample sets to obtain corresponding first evaluation parameters, parameter abnormal points are identified in the multiple sets of first evaluation parameters, and the parameter abnormal points are determined according to the parameter abnormal points; and determining the filtering parameter combination corresponding to the generated parameter abnormal point as a test parameter, executing an impurity filtering test by adopting the test parameter to generate a second evaluation parameter, comparing the second evaluation parameter with a preset second evaluation parameter threshold value to judge the operation effect of the filtering equipment, and according to the judgment result, judging the operation effect of the filtering equipment. A replacement operation or a correction operation is selectively performed. According to the method, the impurity filtering test is executed under the performance bottleneck working condition, closed-loop management is formed by combining replacement operation and correction operation, and the continuous and stable operation time period of the filtering equipment is quantitatively assessed, so that the accuracy of a comprehensive assessment conclusion is ensured.

The utility model provides a simple and easy film filter test fixture, including test base, still include, test groove is established at the top of test base, is used for placing film filter main part, wiring groove, wiring groove symmetry establishes at the center of both ends of test base, any wiring groove inner wall is installed with connecting wire, any connecting wire is externally extended to the running through wiring groove, and the extension end of connecting wire is fixedly arranged with the connecting port, and a plurality of gold wires are arranged in any connecting wire, translation component, translation component symmetry is installed at the top of test base, shear type connecting rod subassembly, shear type connecting rod subassembly symmetry is installed in the mobile end of translation component, is used for to the two side walls of different model film filter's multi -point abutment, end limit component. The utility model is applicable to the clamping of a plurality of size filter, and the test efficiency is high, can carry out multi -point abutment to filter side wall, and the stability of clamping is high.