38results about How to "Affect test results" patented technology

The invention discloses a rotating bracket for wind-tunnel flow-field display test models, and the rotating bracket is provided for solving the problems that in a wind-tunnel flow-field display test, the adjustment on the levelness and rotating angle of the traditional test model is inconvenient and not high in precision. A bottom plate of the bracket is provided with a height adjusting bolt and a level instrument so as to meet the requirements on the levelness of the test model; the edge of a top plate of the bracket is provided with an angle scale line, and a rotating plate is arranged above the top plate, then the model can be rotated quickly and accurately so as to adjust the test model to a required wind attack angle; and besides the wind-tunnel flow-field display test, the bracket also takes the demands of a pressure measuring test for wind tunnels into consideration, holes are arranged in the centers of the top plate and the rotating plate so as to facilitate the connection between a pressure measuring pipe at the bottom of the model and a pressure measuring device below a floor board of a wind tunnel. The rotating bracket disclosed by the invention can be used for solving the problem that in a wind-tunnel flow-field display test, the manual adjustment on the levelness and rotating angle of a model is poor in precision; and the rotating bracket not only can be applied to wind-tunnel flow-field display tests on pure building structure scaled models in wind tunnels, but also can be applied to synchronous pressure measuring tests.

The invention discloses an industrial robot space pose measuring mechanism and measuring method based on a stay wire rotation sensor. The measuring mechanism is based on three stay wire encoders and arotary encoder. The measuring method specifically comprises the steps that the measuring mechanism is self-calibrated before measurement, and during measurement of the measuring mechanism, an industrial robot changes the pose of a tail end space to-be-tested point once, the rotary encoder does not rotate firstly, and the measuring mechanism obtains displacement length data of three stay wires; then the rotary encoder rotates by a certain angle for the first time, and the measuring mechanism obtains displacement length data of the three stay wires; and finally, the measuring mechanism obtainsa group of pose solutions of the tail end space to-be-tested point of the industrial robot under a base coordinate system of the measuring mechanism based on the above data and by means of a Stewart mathematical model, and obtains a group of pose solutions in the base coordinate system of tail end motion of the industrial robot through coordinate conversion. The industrial robot space pose measuring mechanism based on the stay wire rotation sensor has a self-calibration function, and is simple in structure, high in environmental adaptability, low in cost and high in precision.

The invention discloses a test method for a liquid absorption rate of a macromolecular miroporous diaphragm. The test method comprises the following steps: step 1: producing a roll core according to a wound or laminated lithium ion battery, placing the roll core into an aluminum-plastic membrane, and capping and laterally sealing the aluminum-plastic membrane to obtain a diaphragm sample; step 2: carrying out vacuum baking on the diaphragm sample; step 3: weighing the baked diaphragm sample, recording the weight as G1; step 4: immersing the diaphragm sample into a solution; step 5: weighing the vacuumized and hot-sealed aluminum-plastic membrane, and recording the weight as G2, wherein the calculation formula of the liquid absorption rate of the diaphragm is as follows: eta=(G2-G1)/S*100%. The invention also discloses a test device. The test method and test device have the advantages that the manmade error can be reduced, the environment influence is alleviated, the consistency and reproducibility of the test result are high, and convenience for comparing the liquid absorption performance of the coated diaphragm and the liquid absorption performance of a basic membrane can be achieved.

The invention is suitable for the field of airfoil wind tunnel test equipment, and particularly relates to an airfoil type wind tunnel test bench, which comprises an experiment flat plate, a six-component measuring balance an upper anti-interference airfoil profile and a lower anti-interference airfoil profile; a rotation adjusting flat plate is rotatably arranged on the experiment flat plate, and accurate angle adjustment is completed by using a dial arranged on the rotation adjusting flat plate, so that the airfoil wind tunnel test bench is used for wind tunnel tests under different attack angles; the six-component measuring balance is used for measuring force through a plurality of force measuring rods arranged between the experiment flat plate and the six-component measuring balance, the force measuring rods are used for transmitting the force borne by the measured empennage in the wind tunnel test to the six-component measuring balance, and the force is measured through the six-component measuring balance; and the upper anti-interference airfoil profile and the lower anti-interference airfoil profile are respectively arranged at two sides of the tested airfoil profile and are used for preventing an induced vortex from being formed on the upper and lower end surfaces of the airfoil profile due to the flow velocity and pressure difference on two sides of the airfoil profile to influence a two-dimensional airfoil profile test result; and the upper anti-interference airfoil profile is fixed through a fixing device located on the side face in the incoming flow direction and used for reducing the influence of the fixing device on the flow field of the test section.

The invention relates to a quantitative and large-scale infecting method for testing antiviral capability of prawns, belonging to the field of select breeding of antiviral fine breeds of prawns. The quantitative and large-scale infecting method comprises the steps of preparing before infection, preparing an infection source, infecting prawns one by one, and collecting and analyzing data, wherein the step of infecting the prawns one by one comprises the following steps of: respectively putting the prawns to be tested in a transparent plastic container, wherein a black background is paved at the bottom of the plastic container so as to observe conveniently; and after hungering the prawns for 2 hours, feeding poison baits into the container, and observing the feeding condition of the prawns. According to the invention, the simple, convenient and independent transparent plastic container is utilized; when the large-scale process of testing the antiviral capability of the prawns is carried out, each prawn is put in the independent container and is fed for one time; the phenomenon, such as grabbing of the prawns and the like, can be effectively avoided; furthermore, the prawns can be prevented from eating poison baits for many times; influence of a test result caused by repeated infection and excess infection quantity can be avoided; and in addition, because prawn bodies are transparent and the black background is paved at the bottom of the container, feeding and eating observation are convenient.

The invention discloses an optimized biomedical test incubator apparatus, which comprises a box, wherein the top portion and the bottom portion of the outer surface of the box are sequentially and fixedly connected to a first sealing baffle and a second sealing baffle, the top portion of the outer surface of the first sealing baffle is fixedly connected to a first outer frame, the middle positionof the bottom portion of the inner cavity of the first outer frame is provided with a rotation observation device, the top portion of the outer surface of the first outer frame is fixedly connected toa control panel, the front surface of the box is provided with a first opening, the surface of the first opening is rotatably connected to a rotation door through a rotation shaft, the middle position of the front surface of the rotation door is provided with a second opening, and a transparent window is embedded on the surface of the second opening. The invention relates to the technical field of biomedical devices, and provides the optimized biomedical test incubator apparatus, which can conveniently perform regular observation on the cultured material in the box and can conveniently placethe culture bottle.

The invention discloses a data line test fixing device and a tester with the data line test fixing device. The fixing device is provided with a through hole for limiting a data line and interfaces for fixing a testing device. Preferably, the fixing device is a cuboid, the surface of the fixing device is provided with the at least through hole and the interfaces are located at two ends of the fixing device. The tester with the data line test fixing device can prevent overlarge displacement of a data line in a swinging test by the through hole thereby preventing test result influence caused by winding of multiple data lines.

The invention discloses a novel fuel cell pressure maintaining experiment bench which comprises a support. Connecting pieces arranged at two ends of the support; a clamping groove is formed in one endof the support; limiting blocks are arranged on two sides of an inserting opening; first sliding grooves are formed in the sides, close to the limiting blocks, of the inserting opening; first slidingblocks penetrating through the first sliding grooves are arranged on the sides, close to the first sliding grooves, of the limiting blocks; blocking pieces are arranged at the ends, away from the limiting blocks, of the first sliding blocks; triangular blocks are arranged on the side, close to the inserting opening, of the blocking pieces; and first springs are arranged on the triangular blocks.According to the novel fuel cell pressure maintaining experiment bench, the connecting pieces are arranged, so that the purpose that the support is simple and convenient to mount and dismount can be achieved.

The invention discloses a method and a device for testing an application downloading speed of an intelligent terminal and the intelligent terminal, in order to improve efficiency and accuracy of testing the application downloading speed of the intelligent terminal. The method comprises: when networking a plurality of applications, marking a one-to-one corresponding relation of each application in the plurality of applications and a TCP/IP port; testing a real-time downloading speed of the application corresponding to the TCP/IP port; writing the real-time downloading speed of the application corresponding to the TCP/IP port in a specified file according to the one-to-one corresponding relation of each application and the TCP/IP port; and transmitting the specified file to an application layer, for enabling the application layer to display the real-time downloading speed of the application. Compared with the manner of manually testing the downloading speed of the application in the prior art, the method provided by the invention is high in automation degree, the test efficiency and result of the method are not influenced by subjective factors, the test efficiency is high, and the test result is relatively accurate.

The invention discloses a suturing nail compression resistance testing device for endoscope cutting anastomat. The suturing nail compression resistance testing device comprises a protection box, a pressure bearing table is fixedly connected to the middle of the lower box wall of the protection box, a testing table is jointly and fixedly connected to the four corners of the upper end of the pressure bearing table, and a box door is movably connected to the front end of the protection box through hinges; a tempered glass window is fixedly connected to the middle of the front end of the box door in a penetrating mode, a cleaning device is fixedly connected to the middle of the rear end of the protection box in a penetrating mode, an ash measuring device is movably connected to the upper portion of the left end of the protection box in a penetrating mode, and a pressure measuring device is movably connected to the middle of the upper end of the protection box in a penetrating mode. The lower portion of the right end of the protection box is fixedly connected with a controller, and a slag outlet is formed in the front portion of the lower box wall of the protection box. The suturing nail compression resistance testing device for the endoscope cutting anastomat is good in testing effect, residues generated during testing can be cleaned, a plurality of suturing nails can be tested at the same time, the testing efficiency is improved, and the suturing nail compression resistance testing device is suitable for wide application.

The invention provides a temperature detecting probe. The temperature detecting probe comprises a probe body, an installing base, a protection cover and a baffle plate, a through hole is formed in theinstalling base, and the installing base is fixedly connected with one end of the protection cover; the baffle plate is fixedly connected with the other end of the protection cover; the probe body penetrates through the through hole and is fixedly connected with the baffle plate; a plurality of stagnation chambers are formed in the probe body radially and exposed to the outside of the protectioncover, and the probe body does not make contact with the protection cover.

The invention discloses a control box device capable of preventing airflow leakage and keeping uniform temperature, aiming at the problem that condensed water falls to the surface of a tested rticle under the action of gravity, the control box device is characterized by comprising a box body, a box door and an air feeding device, wherein the box door is rotatably connected onto the front side of the box body, the air feeding device is arranged at the top of the back surface of the box body and used for feeding hot air into an inner cavity of the box body, an air feeding hole of the air feedingdevice faces the box door, the box body is internally fixedly connected with a partitioning plate for separating a product from the top surface of the inner cavity of the box body, the air feeding hole of the air feeding device is provided with the partitioning plate and is used for introducing hot air into the top and bottom of the separating plate, a wind deflector is fixedly connected to the side surface, far away from the air feeding device, of the partitioning plate and is used for blocking hot air flowing through the partitioning plate and introducing the hot air below the partitioningplate, and a plurality of separation plates are fixedly connected to the side surface, far away from the air feeding device, of the partitioning plate and are used to separate an air outlet formed bythe partitioning plate and the top surface of the inner cavity of the box body. The control box device has the advantages of preventing water condensation and airflow leakage and keeping uniform temperature.

The invention discloses a sample bracket used for examination. The sample bracket includes a sample bracket body, a plurality of adapter installation grooves are vertically arranged on the upper part of a pedestal, and each adapter installation groove is provided with a buckle hole and an observation window. The pedestal of the sample bracket body is provided with a chute matching an automatic inspection analyzer. The observation window includes a main observation window located in the front of the observation window. The buckle hole includes a first buckle hole provided at a side wall of an adapter installation groove located at the lower part of the main observation window, and a second buckle hole provided at a rear side wall, corresponding to the main observation window, of the main observation window, wherein the second buckle hole is adjacent to the top of the adapter installation groove. An inner side wall of the adapter installation groove is provided with at least one vertical guide groove corresponding to an adapter, and the center of the bottom of the adapter installation groove is provided with a positioning ring, coaxial to an adapter. The sample bracket is simple in structure and convenient to use, can firmly lock the adapter to the sample bracket, and prevents the adaptor from rotation and slide off, so that the accuracy of examination results is ensured.

The invention relates to a loudspeaker testing device, which comprises a baffle and a base, and the baffle is arranged on the base. The loudspeaker testing device also includes a receiving plate, a bead, a fixing piece and a positioning piece. The receiving plate includes a body and an edge, and the middle part of the body A positioning slot is provided, a through hole is provided in the middle of the positioning slot, a test hole is provided on the baffle plate, and an installation slot is provided around the test hole, the body is accommodated in the test hole, and the edge is accommodated in the installation slot, The bead is arranged on the baffle, the fixing member can be adjusted to pass through the middle of the bead, and the positioning member is arranged at one end of the bead. The loudspeaker testing device of the present invention can meet the test and fixation of loudspeakers of different sizes, and the positioning of the loudspeaker is convenient and fast, which effectively improves the testing efficiency; in addition, the long-term testing will not lead to weakening of the loudspeaker fixing force, avoiding the instability of the testing device and affecting the loudspeaker test result.

The invention relates to the technical field of textile yarn elastic performance detection, in particular to a fiber textile yarn elastic performance detection device and detection method, including a detection workbench and a detection mechanism. In the detection mechanism provided by the present invention, a rotating motor rotates a disc It cooperates with the interlocking rod to drive the reciprocating connecting plate to reciprocate up and down, thereby driving the textile yarn to reciprocate up and down through the cooperation of the moving block and the support roller. The yarn is detected synchronously to improve the detection efficiency of the textile yarn; in the locking branch chain, the textile yarn is placed in the locking plate and the locking frame, and the textile yarn is fixed in the locking groove by pressing the push rod Inside, push the limit plate to be clamped inside the limit groove, the locking plate and the limit plate can cooperate with each other to quickly fix and lock the textile yarn, so as to avoid too much time spent in the process of fixing the textile yarn.

The invention discloses a voltage-stabilization-type test rotating speed automation adjusting type motor test system based on band-pass filtering. The system is characterized in that the system is formed by a single chip microcomputer, a variable frequency motor control unit connected to the single chip microcomputer, an output display unit, an operation unit, a band-pass filtering unit, a rotating speed signal acquisition unit connected to the band-pass filtering unit, a tested motor connected to the rotating speed signal acquisition unit, a variable frequency motor connected to the tested motor and a voltage-stabilized power supply module connected to the variable frequency motor; and the variable frequency motor is also connected to a variable frequency motor control unit. In the invention, the band-pass filtering unit is arranged and can be used to filter an interference signal doped into a rotating speed signal so that an influence of the interference signal on the rotating speed signal is avoided and a test result of the tested motor is not influenced.

The invention discloses a gravity testing device for education science and technology, and relates to the field of gravity testing devices. The gravity testing device comprises a box body, an electromagnet is fixedly connected to the top end of an inner cavity of the box body, a material barrel is arranged at the bottom end of the electromagnet, the material barrel is composed of a barrel body and a barrel cover, a threaded rod is fixedly connected to the bottom end of the barrel cover and is in threaded connection with the top of the inner wall of the barrel body, a plurality of weight increasing blocks are arranged in an inner cavity of the barrel, a timing mechanism is arranged on the inner wall of one side of the box body, a first photoelectric switch and a second photoelectric switch are fixedly connected to one side of the box body in a penetrating mode, and the timer is fixedly connected to one side of the box body. The material barrel composed of the barrel body, the barrel cover and a threaded rod is matched with the weight increasing blocks arranged in the material barrel, the mass of the material barrel is changed by increasing or decreasing the number of the weight increasing blocks in the material barrel, the surface area of the measured material barrel is kept the same, and therefore, the error of a measurement result caused by air resistance when the material barrel falls is reduced, and the accuracy of the gravity test is improved.