52results about How to "Speed up experimentation" patented technology

The invention discloses a nuclear magnetic resonance T2 cut-off value calculation method based on longitudinal wave constraint. The method mainly comprises procedures of core cutting, polishing, drying and other pretreatment, nuclear magnetic resonance T2 spectrum and longitudinal wave speed measuring at a core saturation state, nuclear magnetic resonance T2 spectrum measuring at a core centrifugation state, and nuclear magnetic resonance T2 cut-off value influence factor analysis and modeling. The established T2 cut-off value calculation method is only related to the longitudinal wave speed and nuclear magnetic resonance porosity, indeterminacy of calculation is lowered to the maximum extent, the problem of propagation of error in a traditional calculation method is effectively solved, great convenience is brought to application for engineering and technological researchers, the measuring cost is saved, and the experiment schedule is accelerated.

The invention discloses a double-hearth high temperature smelting furnace, and belongs to the technical field of electric heating. The double-hearth high temperature smelting furnace is characterized in that: a furnace body has a high temperature heating hearth and an ultrahigh temperature heating hearth at the same time, wherein the high temperature heating hearth has a box-type furnace structure with a lifting bottom, and the ultrahigh temperature heating hearth has a well-type furnace structure with a lifting bottom; and exchange of bottoms of the two heating hearths and heating materials can be realized through furnace bottom lifting and rotating mechanisms. The two heating hearths can be used separately or used at the same time. When the two hearths are used together, the material can be preheated in the high temperature hearth or further cooled, and the preheated material is further smelted in the ultrahigh temperature hearth or cooled. Through a double-hearth structure, the double-hearth high temperature smelting furnace realizes step heating of the material, ensures that a heating element runs in an optimal working area for a long term, improves the ultrahigh temperature smelting efficiency of batch materials by over two times, greatly shortens the material heating time and improves the operation safety.

The mobile mixing cloud chamber capable of providing supercooled fog includes cloud chamber cavity with heat insulating layer, inside temperature sensing element and refrigerating system; inner cloud chamber barrel inside the cloud chamber cavity; sandwiched refrigerant layer between the inner barrel and the heat insulating layer, with liquid exhaust port in the bottom and for the evaporating tube of the refrigerating system, electric heater and temperature sensing element to be set inside; supercooled slot between the inner cloud chamber barrel and the sandwiched layer and with fog tube penetrating the bottom of the slot and the outer wall of the cloud chamber cavity; drainage pipe penetrating from the inner cloud chamber barrel and through the heat insulating layer and tee tube to outside the cloud chamber cavity; ice crystal receptor inside the inner cloud chamber barrel; and rotary handle.

The present invention relates to CADASIL related gene mutation types and detecting method. The gene mutation types include: the mutation of codon 134 in exon Exon4 from TGC to TAC, the mutation of codon 141 in exon Exon4 from CGC to TGC, the mutation of codon 90 in exon Exon3 from CGT to TGT, the mutation of codon 117 in exon Exon4 from TGC to CGC, the mutation of codon 169 in exon Exon4 from CGC to TGC, and the mutation of codon 182 in exon Exon4 from CGC to TGC. The gene sequencing process includes the steps of: providing DNA sample, designing primers for 22 exons, selecting 10 mutant hot points for exon PCR amplification, performing nucleotide analysis in DHPLC technology, performing gene sequencing on DHPLC positive samples to determine gene type, performing other exon PCR amplification on DHPLC negative samples, performing KHPLC detection, and performing gene sequencing on DHPLC positive samples.

The invention provides a separation and purification method of crocin-1. The separation and purification method comprises the steps as follows: mixing a plant material with an extraction solvent, performing ultrasonic extraction at 20-80 DEG C for 5-60 min, removing an alcohol solvent to obtain a crocin-1 crude extract, and then, purifying the crocin-1 crude extract by serial macroporous resin to obtain crocin-1, wherein the plant material is selected from crocus plants and / or gardenia plants; the extraction solvent is a mixture of water and the alcohol solvent.

The invention provides a light guide test device comprising a radioactive source box, a crystal holder, a photomultiplier tube box and a bottom plate which are connected sequentially from top to bottom. The radioactive source box comprises a radioactive source, a radioactive source box cover and a radioactive source box body. The crystal holder comprises a crystal holder body, a crystal holder cover, a crystal holder fixing plate, a crystal module and a to-be-detected light guide. The crystal holder body is fixed above the to-be-detected light guide through the crystal holder fixing plate. The to-be-detected light guide is fixed above the photomultiplier tube box through a plurality of spring clips. The photomultiplier tube box is fixed on the bottom plate. The photomultiplier tube box is internally equipped with a plurality of photomultiplier tubes. The photomultiplier tube box is externally equipped with a connector board which is provided with high-voltage power input ends and data output ends. The high-voltage power input ends are connected with the power input ends of the photomultiplier tubes. The signal output ends of the photomultiplier tubes are connected with a detector test platform through the data output ends.

The invention discloses a method of simultaneously performing enzyme-cut and link up co-system based on a CcdB lethal gene and a SmaI restriction enzyme cutting site. The method comprises the following steps of: inserting the ccdB gene between EcoRI and HindIII sites of a carrier pUC18 to obtain a pU18-ccdB plasmid; and then mixing the pU18-ccdB plasmid, a DNA fragment, a restriction enzyme SmaI, T4 ligase, T4 ligase buffer and water to form a reaction system for reaction so as to obtain a link product. By taking a common pUC18 carrier as a framework carrier, a quick, efficient and low background cloning method is constructed by combining a screening mechanism of the ccdB lethal gene and the SmaI restriction enzyme cutting site contained in the CcdB lethal gene without steps of performing double digestion on a ccdB recombinant carrier and a PCR product and recovering glue and the like, and the PCR product can be directly linked to a cloning carrier, so that the method is high in efficiency; and the whole time is controlled within 20 minutes, so that the experimental cost is greatly lowered, and the experimental progress is accelerated. The cloning system has very wide application prospects.

The invention provides an experimental device and method for magnetic slurry crack grouting and filling, the experimental device comprises a steel truss, a crack seepage visualization device to be experimented and a camera are carried on the steel truss, the crack seepage visualization device is connected with a bottom slurry outlet of a multifunctional pressure grouting tank through a grouting pipe, and the camera is connected with the multifunctional pressure grouting tank. The top of the multifunctional pressure grouting tank communicates with a pressure pipe, and the pressure pipe communicates with an air pump. Establishing a flow track and a filling area rule of magnetic grout under the action of different grouting pressures, and establishing a crack grout grouting radial diffusion model; slurry matching parameters are provided for different types of crack grouting repair projects, better filling of the interior of the crack is achieved, and the cost is reduced while the repair quality is guaranteed.

The invention provides a myoelectricity data automatic labeling method. The myoelectricity data automatic labeling method comprises the following steps that S1, a synchronous collection mode of collecting myoelectricity data of hand actions by a myoelectricity device and collecting image data of the hand actions by LeapMotion is adopted; S2, gesture activity section extraction is performed on the LeapMotion gesture action data; S3, the LeapMotion gestures are clustered through a clustering method, and action labels are obtained. and S4, automatically labeling the myoelectricity gesture data is automatically according to the label obtained in the S3. According to the invention, the problem that a user is too boring and tired due to too long acquisition time of a certain action in gesture data acquisition can be solved. Meanwhile, the experiment platform for different identification tasks does not need to be additionally modified, so that the experiment platform modification time of an experimenter can be shortened, and the experiment progress is accelerated.

The invention discloses a circuit device for controlling an insect flight behavior based on electrical stimulation. The device is composed of three parts including an upper computer, a coordinator andan electronic backpack, wherein the upper computer is connected with the coordinator through a serial port, and the coordinator is connected with the electronic backpack in a wireless communication mode. The upper computer is implemented based on a Labview platform and sends a flight instruction to a lower computer through a serial port; the coordinator part mainly comprises a USB / serial port circuit, a first microprocessor and a ceramic antenna, and realizes connection between a wired network and a wireless network; and the electronic backpack is composed of an electric stimulator, a secondmicroprocessor, a ceramic antenna, an analog MEMS microphone, a nine-axis sensor and a micro battery, is small in size and light in weight, can be carried on the body of a beetle and is an executive device of the whole circuit. According to the circuit device, stimulation signal parameters can be changed in real time and insect flight information acquired by the lower computer is displayed at thesame time, and the design requirements of low cost, high reliability, low power consumption, multifunctionality and the like are met.

The invention discloses a high-entropy alloy stirring friction material additive device which comprises a stirring head, a heat sink module set is arranged at the upper end of the stirring head, a feeding port is formed in one side of the heat sink module set, a cooling liquid outlet and a cooling liquid inlet are sequentially and vertically formed in the lower end of the feeding port, a rotary friction mechanism is arranged in an inner cavity of the heat sink module set, a crushing mechanism is arranged at the upper end of the rotary friction mechanism, a driving module set is arranged at the upper end of the heat sink module set, pure metal wires with different thicknesses are fed into the feeding port and crushed through rapid rotation of a grinding wheel to obtain flaky sheets, the flaky sheets are subjected to heat fusion through the friction rotation mechanism and then cooled, and after solidification, the flaky sheets are stacked layer by layer to complete high-entropy alloy material additive preparation. According to the high-entropy alloy stirring friction material additive device and the preparation process, high-entropy alloy preparation and stirring friction material additive are combined together, two processes are combined into one process, the material additive efficiency of the high-entropy alloy is greatly improved, different proportions can be rapidly adjusted, and the experiment progress of a novel high-entropy alloy material is accelerated.

The invention provides an automatic running wheel device used for training an experimental rat and a control method thereof. The running wheel device comprises a base and a running wheel, wherein therunning wheel is arranged in a vertical hollow shape, the experimental rat is put in the running wheel, a reward liquid feed arm is arranged in the running wheel, a reward liquid feed orifice allowingthe experimental rat to lick is arranged at the end part of the reward liquid feed arm, is adjacent to the bottom wall of the running wheel and is located at the inclined top of the advancing direction of the experimental rat, and the running wheel is in normal running fit with the base and can perform fixed-axis rotation in own axis direction; and the running wheel device further comprises a driving device, the driving device comprises a driving wheel used for propping drive or propping locking of the running wheel, and the driving wheel can move in the direction away from or close to the running wheel. According to the running wheel device, exercise intention stimulation, rehabilitation training and exercise amount quantization measurement for the experimental rate are realized, one observation platform for an exercise process of the experimental rat in a small range is provided, the functions are highly integrated, consumption of plenty of time and effort is avoided, and experimental schedule and efficiency are effectively increased.

The invention discloses a large-liquid-amount constant-pressure displacement indoor physical simulation experiment method. The method sequentially includes the following steps that a large-liquid-amount constant-pressure displacement indoor physical simulation experiment device is installed and detected; water is added into a water container I, and dissolved gas is removed; water is added into a water container II, and dissolved gas is removed; oil saturation is performed on a rock core; oil displacement by water is performed on the rock core; oil and liquid obtained through displacement are counted. The experiment device comprises an automatic water adding device I, an automatic water adding device II, an oil adding device, an impurity removing device I, an impurity removing device II, a pressure collecting device, an oil and water counting device and a rock core clamping device. The automatic water adding devices comprise vacuum pumps, and water adding control buttons and displacement control buttons are further arranged. The experiment method is high in automation degree and operability, integrates multiple functions, can achieve water feeding automatically, meets the using requirement for large-liquid-amount displacement, can effectively remove impurities in the water and oil and meanwhile removes the dissolved gas in the water.

The invention discloses an improved CTAB (cetyltrimethylammonium bromide) method for extracting genomic DNA of cotton. The method comprises the following steps: (1) grinding liquid nitrogen into powder, adding a CTAB buffer solution, and shaking the mixed solution in a water bath at 65 DEG C to obtain an extract solution I containing DNA; (2) performing cooling, adding RNase A, and performing a water bath at 37 DEG C; (3) adding equal volume of a solution A, uniformly mixing the solutions and performing centrifugation to obtain a supernatant I; (4) continuously adding equal volume of the solution A, uniformly mixing the solutions and performing centrifugation to obtain a supernatant II; (5) adding NaAc, then adding absolute ethyl alcohol, and performing shaking horizontally to form flocculent precipitates; (6) performing centrifugation, removing the supernatants, washing the precipitates, removing absolute ethyl alcohol, and performing drying to obtain precipitated DNA; (7) dissolvingthe precipitated DNA and storing the DNA in a refrigerator at subzero 20 DEG C for standby application. The method has the advantages that procedures for extracting genomic DNA of cotton leaves with the CTAB method are simplified, experimental time is shortened greatly, DNA extraction cost is reduced, RNA eliminating effect is improved, and the method is applicable to large-scale extraction of genomic DNA of the cotton leaves.

The invention belongs to the technical field of plant breeding for disease resistance and in particular relates to a method for identifying phytophythora infestans physiological race and application thereof. The method for identifying phytophythora infestans physiological race disclosed by the invention comprises the following steps: (a) setting a disease nursery field; (b) culturing a potato hostmaterial on a culture medium, and performing water culture to form water culture seedlings; (c) transplanting the water culture seedlings into the disease nursery field in the step (a); and (d) performing disease investigation on potatoes in the step (c), and recording the type of the phytophythora infestans physiological race. The experimental study is performed by selecting natural disease nursery, the advantages of scientificity, effectiveness and environment friendliness are taken into account, the requirement on professional skill is low in the whole experimental process, the operation is simple and feasible, the latter half part of the experiment is transferred into a large field for identification, the experimental effect is obvious, the experimental duration is shortened, and theexperimental accuracy is improved.

The invention discloses a variable-frequency-difference laser interference distance measuring device capable of adaptively adjusting a light path. The device can be decomposed into a light source system capable of providing two beams of light sources with variable frequency difference, an interferometer system for realizing heterodyne interference of the two beams of light, a measuring end translation system for simulating satellite micro displacement oscillation caused by gravitational wave or gravitational field change, a phase meter for performing phase discrimination on interference signals to invert displacement information, and a core self-adaptive optical path adjusting system capable of counteracting micro optical path offset caused by frequency difference change, wherein the required peripheral support equipment comprises a vibration isolation system, a vacuum system for reducing air interference and simulating a vacuum environment, a data acquisition and processing computer and the like. According to the invention, the variable-frequency-difference laser interference distance measuring device can highly simulate the situation of Doppler frequency shift change caused by the change of the relative movement speed of a real space double-star interferometer, greatly accelerates the experimental simulation progress, and can also be used in other types of application sceneswith constantly changing heterodyne interference frequency.

The invention provides a stripping material of an air-stable positive electrode active material for cylindrical lithium-ion batteries. According to the method, as alkali liquor reacts with aluminum foil to form hydrogen gas, the positive electrode active material and a current collector come off automatically, and influence from the external to the electrode during coming off is avoided completely. Further, since the lithium-insertion material air stability test is carried out in advance, the original property of the positive electrode active material is maintained completely under double guarantees; thus, the follow-up research on the property of materials is facilitated. Besides, the positive electrode which is coated with the active material on both sides is changed into the positive electrode which is coated with the active material on only one side within a short time, and accordingly the research progress on the positive electrode active material for assembled button cells is accelerated.

The invention discloses a research system for fish reproduction and spawning behaviors and relates to the field of fish reproduction behavioral science. The system comprises a main organic glass cylinder and a spawning cylinder suspended in the main organic glass cylinder, the inner side wall of the main organic glass cylinder is provided with a heating rod and an electronic thermometer, and an adjustable LED light source and a video collection device are installed above the main organic glass cylinder; a glass partition plate is detachably installed in the spawning cylinder, and multiple circular holes for fertilized eggs to pass through are formed in the bottom of the spawning cylinder; a compact metal net is arranged below the spawning cylinder, and bubble stone is arranged at the bottom of the main organic glass cylinder and connected with an external air pump through an air guide pipe. A faucet is arranged on the side wall of the main organic glass cylinder. The research system can achieve multiple functions of observing the fish reproduction behaviors, collecting roes, adjusting environment factors such as water temperature and illumination and the like and greatly help science researchers to increase the experiment success rate of researching the reproduction behaviors and accelerate the experiment progress.

The invention discloses a fixing device for a fowl dissection experiment. The fixing device comprises a box body (1). The box body (1) is of a rectangular open structure. Groove rail devices (2) are arranged on the periphery of the box body (1). Mobile fixing modules (3) are installed on the four corners of the box body (1) respectively and positioned through lock catch devices (4). The mobile fixing modules (3) are connected with spring devices (5) and fixing clamps (6). When the fixing device is in use, a fowl is placed on a platform of the box body (1), the head of the fowl is placed in a circular device (7), the spring devices (5) are extended to fix the movable toes, and then the dissection experiment is performed; the circular device (7) and a telescopic module (8) are connected over the front portion of the box body (1); a shooting positioning device (9) is arranged on the left side of the box body (1); multi-angle shooting is carried out by the adoption of a rotary folding design. The fowl is effectively fixed to be dissected, the experiment schedule is accelerated, and the problems of shaking, low definition and the like caused in the shooting process are avoided.

The invention discloses a device for filling a pipettor tip. The device comprises a base, a hollow carrying frame is arranged at the top of the base, adjusting springs are fixedly connected to the four corners of the top face of the base respectively, the carrying frame is connected with the base through the adjusting springs, and a screening frame body is embedded in the carrying frame; the device further comprises a filling device matched with the screening frame body. According to the pipettor tip filling device, tips are sorted and fixed through the screening frame body, tips are clamped through the filling device to achieve filling, rapid filling of a whole box of tips is achieved, time and labor are saved, convenience and rapidness are achieved, and the pipettor tip filling device becomes a device for filling pipettor tips. According to the invention, devices of corresponding specifications can be selected according to spear tips of different models to realize rapid filling of the whole box of spear tips. The device can be used for quickly filling various pipettor tips, so that not only is the experiment progress accelerated, but also the workload of experimenters is greatly reduced.

The invention discloses a medical experimental animal fixing device and a using method thereof. The medical experimental animal fixing device comprises a workbench, a moving assembly, a limb fixing assembly and a neck fixing assembly; the moving assembly is arranged on the outer wall of the bottom end of the workbench; the limb fixing assembly is arranged on the outer wall of the moving assembly;the neck fixing assembly is arranged on the outer wall of the top end, located on one side of the moving assembly, of the workbench; and moving grooves are distributed in the outer wall of the top endof the workbench in a penetrating mode. Supporting rods and sliding wheels are arranged, so that moving is relatively convenient, time and labor are saved and supporting is relatively stable; the arranged moving assembly can be suitable for fixing animals of different sizes; the arranged limb fixing assembly can fix limbs of an animal, so that fixing is relatively stable, and claws of the animalare effectively prevented from scratching people; and the arranged neck fixing assembly can fix the neck of the animal, prevent the animal from biting people, and protect experimenters, thereby carrying out adjustment at will and improving the experiment progress.

The invention belongs to the field of chemical experiment equipment, and particularly relates to an efficient and stable test tube shaking device. The device comprises a shell, the upper end of the shell is open, a shaking frame is arranged in the shell, a plurality of containing grooves are formed in the upper surface of the shaking frame at equal intervals, and magnetic sliding blocks are fixedly connected to the bottoms of the containing grooves through vibration springs. The bottom of the shell is fixedly connected with a fixing plate. A sliding rail is installed on the upper surface of the fixing plate. The shaking frame is arranged on the upper surface of the sliding rail and is in sliding connection with the sliding rail. A plurality of permanent magnet blocks matched with the magnetic sliding blocks are embedded in the fixing plate at equal intervals. The magnetism between every two adjacent permanent magnet blocks is opposite, and a driving mechanism used for driving the shaking-up frame to shake is arranged on the side wall of the shaking frame. The shaking operation of the test tubes in the transverse direction and the longitudinal direction can be achieved at the same time, and it is ensured that solutions in the test tubes are uniform and experimental results are stable.

The invention relates to a mobile hybrid cloud chamber capable of continuously providing supercooled fog, comprising: a cloud chamber cavity with a thermal insulation layer, a temperature sensing element and a cooling system inside; There is a refrigerant interlayer in between, in which there are evaporation tubes of the refrigeration system, electric heaters and temperature sensing elements; there is a supercooling slit between the cloud chamber tube and the jacket layer, from the bottom of the supercooling slit to the outer wall of the cloud chamber cavity A mist pipe runs through it, and a liquid discharge port is opened at the bottom of the refrigerant interlayer, and a sewage pipe is connected to the bottom of the cloud chamber to penetrate into the heat insulation layer, and the sewage pipes are respectively passed out of the cloud chamber through a tee; installed in the cloud chamber Ice crystal receiving device; cover a transparent cover plate on the top of the cloud chamber cavity, open a sample injection port and socket on the cover plate, and set a rotatable handle, the shaft end of which is fixed under the heat capacity plate . The device can realize the continuous or intermittent supply of supercooled mist, so as to ensure that the activation of ice nuclei and the growth of ice crystals injected into the cloud chamber have sufficient water vapor supply all the time.

The invention discloses a solid phase extraction pressurizing device which comprises a sliding table. A piston is arranged in each pressurizing sleeve on a supporting seat on the sliding table, a pressurizing cavity is formed between each piston and a closed end of the corresponding pressurizing sleeve, the outer end of a piston rod on each piston is fixedly mounted on a mounting seat, a gas pipe is connected with the closed end of each pressurizing sleeve, one end of each gas pipe is communicated with the corresponding pressurizing cavity, the other end of each gas pipe is used for being communicated with a small solid phase extraction column, and each pressurizing sleeve on the supporting seat can be driven by a sliding driving mechanism on the mounting seat to move back and forth on the outsides of the corresponding piston and the corresponding piston rod, so that the volume of the pressurizing cavity in each pressurizing sleeve can be driven to be gradually reduced or gradually increased, and gas in each pressurizing cavity can be squeezed into the corresponding small solid phase extraction column when the volume of the pressurizing cavity is gradually reduced. The solid phase extraction pressurizing device has the advantages that the solid phase extraction pressurizing device is convenient to use, the experiment speeds can be increased, and the experiment accuracy can be improved.

The application relates to the field of friction experiments, and in particular to a friction experiment device, a bearing mechanism and a loading mechanism thereof, and a friction experiment method.The friction experiment device comprises the loading mechanism and the bearing mechanism, wherein the loading mechanism has an L-shaped positive pressure loading surface and a tangential force loadingsurface, the bearing mechanism has an L-shaped positive pressure bearing surface and a tangential force bearing surface, the loading mechanism can load two forces through two loading surfaces at thesame time, the bearing mechanism can carry two forces from the loading mechanism, and elastic cushion layers with the same elastic modulus are respectively provided on the two bearing surfaces so thatthe direction of the loading force is consistent with the overall displacement direction of the test piece to ensure stable loading and achieve sliding friction. The friction experiment method is performed using this experiment device. The application has the beneficial effects of facilitating the simultaneous application of a positive pressure and a tangential force to the test piece through a loading mechanism during a friction experiment, saving the cost of experiment equipment and improving the convenience of the experiment.

The invention provides a tartary buckwheat seed germination drought-resisting stress device and a stress method thereof. The tartary buckwheat seed germination drought-resisting stress device comprises a main box, a cover plate and a bottom box. The main box is internally provided with multiple hollow cubes, and the bottom of each hollow cube is provided with a small hole. The small hole is provided with filter paper. The cover plate is installed on the main box. The main box is installed on the bottom box. The bottom box is internally provided with water. The tartary buckwheat seed germination drought-resisting stress device is capable of enabling tartary buckwheat seeds to complete two states of the germination and the drought-resisting stress treatment in one device, the device is simple in structure, and has the remarkable preventive effect to weak seedlings of the tartary buckwheat. In a germination aspect, suitable amount of water can be provided to the tartary buckwheat for thegermination and the growth, and the emergence of seedlings is tidy; and in a drought-resisting stress aspect, the secondary injure to the seedlings can be reduced in a device movement process, the change of the solution concentration caused by the water desorption is avoided, a lot of samples can be produced in the same box and the repeatability and the accuracy of the samples are guaranteed. Thewhole method is short in used time, high in efficiency, accurate in result, and low in cost.

The invention relates to an assembling type casting-used target device. The detachable assembling type casting-used target device replaces a fixed and undetachable target device, so that in a casting experiment, only damaged parts need to be replaced, and undamaged parts can be repeatedly used. The assembling type casting-used target device is characterized in that the device comprises a target frame, a first sliding bar, a second sliding bar and target cards, the target cards in different sizes can be accommodated by the target device by adjusting the distance between the two parallel sliding bars, a damaged target card can be detached from the sliding bars to be replaced with a new target card, and the sliding bars and the target frame can be repeatedly used. According to the assembling type casting-used target device, labor and material resources are saved, and casting experiment speed is also increased.

An automatic measurement device of photoelectric signal is prepared for, connecting input end of computer to output of oscilloscope and output end of computer to input end of motor controller as well as output end of motor controller to input end of motor actuator, connecting detector to oscilloscope, driving step motor by relevant motor actuator, setting said step motor by driven element setting on photoelectric system to be tested then setting detector at output position of tested photoelectric signal in photoelectric signal system to be tested.

An automatic weighting adjustment device for a melt index meter, comprising an index meter piston rod body (1), the rod body (1) is connected to a weighted part through a bracket structure (2) and includes a display device (3), a pressure chamber (4), two An air pressure regulator (5), an air pressure sensing module (6), a control panel (7) located on the upper surface of the cavity, and an input device (8), a code-to-digital converter (9), and a peeling device (10) are arranged inside. When connected with the piston rod, the load operation is carried out by regularly adjusting the internal air pressure state according to the test requirements, and the display device (3) is used to display the weight level; the prompt device (11) is set, and when the added weight reaches the set weight level, a corresponding alarm will be issued. Prompt information; the structure design is simple, and the conversion of the weight level is realized by adjusting the air pressure. The adjustment is convenient and can effectively speed up the progress of the experiment. At the same time, the operation is simple, the weight is uniform, and it is economical and practical.