31results about How to "Convenience for Comparative Study" patented technology

The invention discloses a multichannel synchronous cochlea auditory nerve action potential measuring system and a multichannel synchronous cochlea auditory nerve action potential measuring method. The multichannel synchronous cochlea auditory nerve action potential measuring system comprises a flexible multichannel electrode array, a pre-amplification unit, a multichannel A / D (analog / digital) conversion unit, a signal processing controller, a data caching and transmitting unit, an upper machine and a display unit, wherein the flexible multichannel electrode array is used for acquiring local auditory nerve action potential signals; the pre-amplification unit is connected with outgoing lines of the multichannel electrode array and amplifies weak auditory nerve potential signals acquired by electrodes respectively and independently; the multichannel A / D conversion unit is used for converting multichannel electric signals outputted from the pre-amplification unit into corresponding digital signals; the signal processing controller is respectively connected with the various units and is used for transmitting corresponding control signals to the various units and reading configuration commands, which are downloaded from the upper computer, in a memory; the data caching and transmitting unit is used for locally storing various acquired channels of parallel data or directly transmitting the parallel data to the upper computer which is used for processing the parallel data; and by the upper computer and the display unit, various measurement parameters are set, the acquired data are processed, and auditory nerve synchronous potential waveforms of a selected observation channel are displayed correspondingly.

The invention provides a warehouse temperature and humidity remote intelligent control system based on the internet of things and a control method thereof. The system mainly comprises a transmitter detection and communication system, a receiver control and detection system, an internet of things mobile terminal and a PC upper computer monitoring control system. The internet of things mobile terminal and the upper computer system, the transmitter detection and communication system and the receiver control and detection system establish channel type interconnection based on the internet. The transmitter detection and communication system and the receiver control and detection system perform control communication through a GSM short message service. A single-chip microcomputer controller is used, interconnection of things is realized through the internet of things technology, a mobile equipment intelligent mobile phone of an Android platform acts as a mobile monitoring and control platform, and the PC upper computer realizes remote communication through the Internet so that real-time monitoring and control of warehouse temperature and humidity can be realized, and the system has advantages of being convenient to use, intelligent in control and stable in system without regional restrictions.

The invention provides a geological survey drilling device and belongs to the technical field of geological survey. The problem that an existing geological survey drilling device is simplex in function is solved. The geological survey drilling device comprises a base. A traveling mechanism is arranged on the lower portion of the base. A workbench is arranged on the upper portion of the base. The workbench is fixed to the base through a connecting support. A drilling machine is fixed to the lower portion of the workbench. The drilling machine is a hydraulic drilling machine. The drilling machine is detachably connected with a drill bit. A working hole used for allowing the drill bit to penetrate through is formed in the base. The drill bit comprises a connecting part used for being connected with the drilling machine, and a working part used for drilling. A storage groove is formed in the base. A geological survey hammer is arranged in the storage groove. A deposit groove is formed in the base. A soil sampler is arranged in the deposit groove. The geological survey drilling device has the advantage of various functions.

The invention provides a multi-drive controllable fire whirlwind experiment simulation and demonstration device, belongs to the technical field of fire safety, and particularly relates to a device forsimulating and demonstrating a naturally induced fire whirlwind or a forcibly induced fire whirlwind in a complicated environment with many controllable parameters. The device includes parts including a base plate, a rotating hollow circular disc, an outer layer drum, an inner layer drum, a trapezoidal screw and a slider, a fuel supply device, mechanical iris blades, a driving device and a measuring device, the outer layer drum and the inner layer drum are located above the rotating hollow circular disc to form a double-layer drum, the trapezoidal screw and the slider are fixed below the rotating hollow circular disc and connected to the double-layer drum, the fuel supply device is located above the rotating hollow circular disc, the mechanical iris blades are located on an upper part ofthe fuel supply device and used for adjusting opening and closing degrees of the blades, the measuring device is located on one side of the rotating circular disc to realize horizontal and vertical movements, and the driving device is located between a location below the rotating hollow circular disc and the base plate to provide a driving force to drive the rotating hollow circular disc to rotate.

The invention provides an oil-gas trace lubricating oil film formation and flow experiment measuring device, which relates to the technical field of oil film measurement, and comprises an experiment base, a wall surface inclination angle adjusting device, a heating device, an oil-gas supply device, an excitation generating device, an oil film generating device, a bracket device, an oil liquid collecting device and a data acquisition and processing system. According to the oil-gas trace lubricating oil film formation and flow experiment measuring device, the steady-state flowing oil film of a nozzle under different spraying distances and different spraying angles can be obtained, the flowing properties of different oil film temperatures on different inclined vibration wall surfaces are studied, and a CCD camera of high-precision online observation equipment is adopted to observe the form of the flowing oil film, a spectral confocal displacement sensor is adopted to measure the thicknessof the oil film on the experimental wall surface, a reliable experimental device and an advanced measurement method are provided for researching the flow properties of the oil film, the operation issimple, and tedious steps are not needed, so that experimental data is richer, and the accuracy of an experimental result is improved.

The invention relates to a simulated experiment device for the passability of high-curvature well section strings. First guide rails are arranged on a main base of the simulated experiment device for the passability of high-curvature well section strings, one end of a straight pipe section of an external pipe is connected to a sliding baffle of a baffle assembly, a string specimen is inserted into a curved pipe section of the external pipe, the other end of the string specimen is connected to a loader, a plurality of groups of fasteners detachably fasten the external pipe at intervals, and the plurality of groups of fasteners are all slidably connected to the first guide rails; the baffle assembly comprises a baffle base, the sliding baffle, second guide rails, a tension-compression sensor, and a fixed baffle, the second guide rails are arranged on the baffle base, the sliding baffle is slidably connected to the second guide rails through slide rails on the bottom, the baffle base is slidably connected to the first guide rails, the fixed baffle is slidably connected to the first guide rails, and both ends of the tension-compression sensor are respectively connected to the sliding baffle and the fixed baffle through adapters. The invention can implement the experimental objective of simulating the passabilities of strings in various high-curvature well sections and various borehole diameters thereof.

The invention discloses a thin liquid film corrosion testing device capable of controlling liquid film thickness automatically. An electrolytic cell is placed on an iron stand table. Micrometer calipers I and II and corresponding probes I and II are arranged on a horizontal beam above the iron stand table. A liquid storage groove is connected with the electrolytic cell through a solenoid valve. The solenoid valve supplies liquid level for the electrolytic cell. An auxiliary electrode, a reference electrode and a working electrode are connected with corresponding ports of an electrochemistry working station respectively, and an electrochemistry corrosion testing system is formed. A universal meter is connected into a loop where the micrometer caliper I and the working electrode are placed. The micrometer caliper II and a platinum electrode are connected with a wire connector of the solenoid valve respectively, and accordingly the three parts form a loop. The device can control the keep a thin liquid film to be of a certain thickness in a certain range automatically, accurately and conveniently, the thickness is convenient to adjust, electrochemistry data collecting of metal corrosion under a certain liquid film thickness is achieved, and accordingly the corrosion mechanism of metal under different film thicknesses can be well studied.

The invention relates to a composite rock mass conventional direct shear test sample manufacturing combined die device and a manufacturing method, the device comprises a shear box, a JRC steel template, a base template, a flat pressing plate, a counter-force frame and a pouring template, the square JRC steel template and the shear box are arranged above the base template, the base template is connected with the reaction frame through two fixing bolts which are symmetrically arranged, a pressurizing valve and a fixing jackscrew are arranged on the reaction frame, and a flat pressing plate which is arranged in a cavity of the shear box is arranged below the fixing jackscrew to form a pressurizing device. According to the combined mold device, the manufacturing convenience degree of composite samples with different cementing surfaces is enriched, and damage to the samples and uncertainty of interface distribution requirements caused by traditional on-site drilling and cutting sampling are avoided. One-time forming for manufacturing of a composite test block is realized. Meanwhile, compared with on-site sampling, manpower loss and time waste of sample manufacturing are greatly reduced, and the manufacturing cost is reduced.

The invention discloses a high-speed wind tunnel free rock test device. The test device comprises a supporting rod front section and a supporting rod rear section which share the same central axis, wherein a mandrel is arranged on the central axis of the supporting rod front section; the front end of the mandrel extends out of the front section of the supporting rod, and a copper sleeve fixedly connected with a test model is mounted at the front end; a conical section connected with the crank arm support is arranged at the rear end of the supporting rod rear section; a ball bearing is arrangedat the front section of the mandrel and behind the copper sleeve; an angular contact ball bearing and an electromagnetic clutch are sequentially fixed at the rear section of the mandrel; an angle encoder is fixed on a central shaft of the rear section of the supporting rod; the electromagnetic clutch at the front section of the supporting rod is connected with the angle encoder at the rear section of the supporting rod through a coupling; and the mandrel rolls freely in the front section of the supporting rod through a ball bearing and an angular contact ball bearing. The test device can evaluate the dynamic rocking characteristics of the aircraft at different attack angles during high-speed flight, and guides the appearance optimization design and flight control robustness design of theaircraft.

The invention belongs to the technical field of medical laboratory appliances, and particularly relates to a pathogene culture dish for foundation medicine. The pathogene culture dish comprises a transparent dish body and a transparent dish cover, wherein the inner bottom of the dish body is fixedly connected with a barrier ring; a first groove is formed in the upper surface of the barrier ring; the inside of the first groove is connected with multiple limiting plates having different arc lengths in a sliding manner; a plurality of stop strips connected with the barrier ring and the inner sidewall of the dish body are arranged around the outer side wall of the barrier ring; the stop strips divide a space between the barrier ring and the dish wall of the dish body into a plurality of culture regions; an identifier and a ventilating hole are arranged at a position, corresponding to each culture region, on the outer side wall of the dish body; a second groove is formed along the edge ofthe dish cover; the edge of an opening of the dish body is connected with the second groove in a sliding fit manner. By the arrangement of the multiple culture regions, the pathogene culture dish cansimultaneously culture various pathogens for comparison research; meanwhile, by the arrangement of a communication region, mutual communication of pathogene intercellular information between the culture regions is facilitated, so as to screen and research an intercellular information transduction mechanism and signal molecules.

The present invention relates to one kind of small integral structure system of ground microwave radiation-scattering meter. The system is integral one of microwave radiation meter and microwave scattering meter, and features the microwave scattering meter of noise system with frequency band range designed to match that of the microwave radiation meter. Under the control of one main controlling and data processing unit, the microwave radiation meter and the microwave scattering meter operate alternately in time sharing mode, have emission leakage detection and receiving gain regulation, and share one receiver. The present invention is favorable to system integration and minimization, and has simplified system structure and lowered system cost.

The invention discloses a thin liquid film corrosion testing method capable of controlling the thickness of a liquid film automatically. A device adopted in the method comprises an iron support, a micrometer caliper I, a micrometer caliper II, a probe I corresponding to the micrometer caliper I, and a probe II corresponding to the micrometer caliper II. A liquid storage tank is connected with an electrolytic bath through an electromagnetic valve. Before a test is started, circuit connection is conducted firstly, and a universal meter is connected to a circuit where the micrometer caliper I and a working electrode are located; the micrometer caliper II and a platinum electrode are connected with a wiring port of the electromagnetic valve to form a circuit; then the thickness of the liquid film is set through the probe I and the probe II. When the test is conducted formally, automatic liquid replenishment can be achieved through opening and closing of the electromagnetic valve. By the adoption of the method, the thin liquid film can be controlled automatically, conveniently and accurately to be maintained at a certain thickness within a certain range, the thickness can be adjusted conveniently, metal corrosion electrochemical data acquisition at a certain liquid film thickness is achieved, and then research on metal corrosion mechanisms at different film thicknesses can be facilitated.

The invention belongs to the technical field of pathological immunohistochemical slide reading, and particularly relates to an immunohistochemical digital slide reading system and method. The system comprises an image acquisition module, an image pyramid creation module, an image matching module and an image overlay display module, wherein the image acquisition module is used for acquiring a digital image of an immunohistochemical digital slide; the image pyramid creation module is used for creating image pyramids with the same zoom level number for each digital image; the image matching module is used for matching the image features of the images on the same zoom level in the image pyramid and outputting an image matching result; and the image overlay display module is used for adjustingthe displacement and the rotation angle of each image according to the displacement offset and the rotation angle offset output by the image matching module, and outputting an overlay display result.A doctor can quickly find typical features in images from the plurality of images and quickly switch the typical features in different immune index images, so that the film reading efficiency is improved.

The invention discloses an automatic finite element calculation method and an automatic finite element calculation system for flowing of fluid in a pipeline, which are capable of remarkably improving the research efficiency of related workers on the flowing problem of the fluid in the pipeline. The technical scheme provided by the invention is that the automatic finite element calculation method comprises the following steps: an upper computer receives an importing operation of a geometric model of the pipeline; the upper computer receives unified setting of parameters for finite element calculation; the upper computer calls a bottom layer finite element calculation model, and automatically divides grids in a standardized manner; the upper computer receives unified setting of boundary conditions; the upper computer calls the bottom layer finite element calculation model, and executes automatic finite element calculation; the upper computer outputs a finite element calculation result.

The invention relates to a method for testing dynamic characteristics of a pile foundation of a nuclear power plant by adopting an underground explosion means, which belongs to the technical field of civil engineering structures of nuclear power plants and comprises the following steps: S1, acquiring geological exploration data, and establishing a fine stratified soil model and a simplified stratified soil model; s2, calculating the maximum speed of each soil layer in the fine stratified soil model by taking an actual engineering earthquake as input; s3, calculating the vibration speed of each soil layer in the simplified soil layer model; s4, determining the explosive dosage, arrangement and detonation sequence; s5, determining arrangement of test piles; s6, determining the form of the test pile and the types and positions of an upper counterweight and a built-in sensor; s7, site construction is conducted, explosives are buried in a drilled hole, and a test pile is manufactured; and S8, starting the explosive, measuring the reaction of the test pile, and obtaining the dynamic characteristics of the test pile. According to the method provided by the invention, the propagation mode of seismic waves from bottom to top and the process of transmitting the seismic waves from soil to the pile body can be simulated, so that the dynamic characteristics of the pile foundation of the nuclear power plant in accordance with the actual seismic condition are obtained.

The invention provides a columnar sediment sampling system with in-situ data acquisition function, including a data collector and a columnar sampler, the data collector includes a hydrological data collector and a heat flow data collector, and the hydrological data collector includes a multi-parameter hydrological Recorder, bracket and connecting rod, the multi-parameter hydrological recorder is installed in the bracket, the hydrological data collector is installed above the cylindrical sampler through the connecting rod, and the cylindrical sampler is equipped with ballast lead block and sampling pipe. The invention can realize the continuous acquisition of the full water depth and multi-parameter hydrological data of the column sampler being lowered once, and make full use of the ship time when the sampler is lowered and recovered.

The invention belongs to the field of ardio-pulmonary resuscitation teaching, and particularly relates to a cardio-pulmonary resuscitation datamation simulation analysis device. The device comprises apresser, a touch device and a display circuit; the presser is connected with the display circuit through the touch device, and the presser is arranged at the chest position of a human body model; thepresser is a compressible folding capsule, and a spring is arranged in the middle of the presser. Accordingly, the pressing state of the human body is simulated through the spring, pressing state simulation of the human body model in the process of cardio-pulmonary resuscitation is achieved, the magnitude of pressing force is displayed through display lamps of three different colors, visual display is given to the user, and whether or not the pressing force meets the needs of patients is determined; the pressure situation in the pressing process is recorded and displayed through a current monitoring recorder, data storage and analysis are conducted, and then examination and comparative study are facilitated.

The invention discloses a thin liquid film corrosion test method that can automatically control the thickness of the liquid film. The device used in the method includes an iron stand, spiral micrometers I and II and corresponding probes I and II, and the liquid storage tank is connected to an electromagnetic The valve is connected to the electrolyzer. Before the test, connect the line first, connect the multimeter to the circuit where the screw micrometer Ⅰ and the working electrode are; Needle Ⅰ and Ⅱ set the thickness of the liquid film; when the official measurement is made, the liquid level can be automatically replenished by turning on and off the solenoid valve. The method can automatically, conveniently and accurately control and keep the thin liquid film at a certain thickness within a certain range, and the thickness can be adjusted conveniently, so as to realize the electrochemical data collection of metal corrosion under a certain liquid film thickness, which is more conducive to research in Corrosion mechanism of metals under different film thicknesses.

The invention discloses a blue hole three-dimensional scanning and environment monitoring system. The system comprises a data acquisition system and an underwater three-dimensional panoramic imaging sonar system, wherein the data acquisition system comprises a first self-weight anchor, a cable, a first floating ball, at least one ocean element sensor, a temperature-salinity-depth section plotter and an acoustic Doppler flow velocity section plotter; and the underwater three-dimensional panoramic imaging sonar system comprises a second self-weight anchor, a guide rail supporting column, a hanging bracket, a hanging rope and a sonar assembly. The blue hole three-dimensional scanning and environment monitoring system is simple and reasonable in structure and convenient to install and use. The blue hole environment element data can be dynamically monitored for a long time, and comparative research is facilitated. The blue hole form scanning field work is low in cost and easy to realize.

The invention provides a 3D co-culture model of fibroblasts and cancer cells as well as a preparation method and application of the model. The 3D co-culture model comprises fibroblast droplets and cancer cell droplets; and the fibroblast droplets and the cancer cell droplets are connected through a Matrigel channel. The 3D co-culture model is dumbbell-shaped, and fibroblasts and cancer cells can be independently cultured in the early stage of inoculation, so that the fibroblasts and the cancer cells have respective independent growth stages before interaction; and meanwhile, the morphologicalchange which is generated when the fibroblasts and the cancer cells interact with each other can be observed after the fibroblasts and the cancer cells are cultured for a period of time through the Matrigel channel, and an observation window period is provided for researching the independent growth and mutual influence process of the fibroblasts and the cancer cells.

The invention discloses monitoring equipment for vibration deformation at a joint of a highway bridge, and belongs to the related technical field of the highway bridge. The highway bridge joint vibration deformation monitoring equipment comprises a fixed ladder, a fixed assembly is arranged on the right side of the upper end of the fixed ladder, and an equipment box is arranged above the right side of a base; a box cover is arranged on the top face of the equipment box, a joint vertical dislocation monitoring assembly is arranged on the top face of the other side of the box cover, a mounting frame is arranged in the equipment box, a distance surveying and mapping assembly is arranged on the lower side of the upper end of the mounting frame, and a vertical dislocation surveying and mapping assembly is arranged on the inner side of the left end of the mounting frame. The device can be applied to monitoring of a high bridge joint, the practicability of the device is improved, the distance between two beam bodies at the bridge joint can be drawn in real time under the vibration condition by arranging the joint interval monitoring assembly and the interval surveying and mapping assembly, and comparative research on monitored data is facilitated.

The invention discloses a novel biological aerosol inactivation device which comprises a base, a workbench, a sample storage assembly, an inactivation assembly, a communication assembly and a detection device, wherein the workbench is fixed to the upper end face of the base; a lower closed bin is fixed in the workbench; the sample storage assembly is arranged in the lower closed bin; an upper closed bin is fixed to one side of the upper end face of the workbench; the inactivation assembly is arranged in the upper closed bin; the communication assembly is arranged on one side of the inactivation assembly; the bottom of the communication assembly is communicated with the sample storage assembly; the top of the communication assembly is connected with a detection bin through a connecting pipe; the detection bin is fixed in the detection device; and the detection device is fixed to the side, away from the upper closed bin, of the workbench. According to the invention, the inactivation efficiency of different inactivation modes on biological aerosol can be researched through the arranged inactivation assembly, so that different inactivation modes of the biological aerosol can be determined, and the inactivation efficiency of the biological aerosol is improved.

The present invention relates to a high-curvature well section pipe string passage capacity simulation experiment device, wherein the high curvature well section pipe string passage capacity simulation experiment device is provided with a first guide rail on the main base, and one end of the straight pipe section of the outer pipe is connected to the baffle group Sliding baffle, the pipe string test piece extends from the elbow section of the outer pipe, the other end of the pipe string test piece is connected to the loading device, and multiple sets of fastening devices detachably clamp the outer pipe at intervals, and the multiple sets of fastening devices all slide Connected to the first guide rail; the baffle set includes a baffle base, a sliding baffle, a second guide rail, tension and pressure sensors, and a fixed baffle. The baffle base is provided with a second guide rail, and the sliding baffle is connected to The second guide rail is slidably connected, the baffle base is slidably connected to the first guide rail, the fixed baffle is slidably connected to the first guide rail, and the two ends of the tension and pressure sensor are respectively connected to the sliding baffle and the fixed baffle through variable buckles. The invention can realize the experimental purpose of simulating the passage capacity of various high-curvature well sections and pipe strings with various borehole diameters.

The present invention relates to one kind of small integral structure system of ground microwave radiation-scattering meter. The system is integral one of microwave radiation meter and microwave scattering meter, and features the microwave scattering meter of noise system with frequency band range designed to match that of the microwave radiation meter. Under the control of one main controlling and data processing unit, the microwave radiation meter and the microwave scattering meter operate alternately in time sharing mode, have emission leakage detection and receiving gain regulation, and share one receiver. The present invention is favorable to system integration and minimization, and has simplified system structure and lowered system cost.