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 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 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 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 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.