2544results about How to "Improve experimental efficiency" patented technology

The invention discloses a detection system for the total number of bacteria in livestock meat. The detection system comprises a light source apparatus emitting a spot light source to irradiate a livestock meat sample, a hyperspectral imaging apparatus used for acquiring spectral information of the livestock meat sample, an electric adjusting apparatus used for adjusting the position of the livestock meat sample and the position of the hyperspectral imaging apparatus, a controller apparatus used for controlling the motion of a motor of the electric adjusting apparatus, a sensor apparatus used for determining the position of the livestock meat sample and the position of the hyperspectral imaging apparatus and outputting position signals, a computer processor used for receiving the position signals, outputting processed position signals to the controller apparatus, analyzing hyperspectral information of the livestock meat sample and outputting analysis results and a dark box used for placement of the hyperspectral imaging apparatus. According to the invention, automatic real-time detection and real-time outputting of detection results are realized, experiment efficiency and accuracy are improved, obtained results are more reliable, and an operation method of the detection system is simple.

The invention discloses a device and a method for testing a low-permeability core starting pressure gradient at the high temperature and the high pressure with an unsteady state method. The method comprises steps as follows: a to-be-tested low-permeability core sample is prepared and placed in a core holder; an automatic water pump is used for providing required confining pressure and return pressure for the core holder; a third valve is closed, and a gas pressurization device is used for pressurizing a standard bottle; after a second pressure sensor stably reads, the third valve is opened, and gas in the standard bottle permeates an inlet of the core holder; a controller records a pressure value, changing over time, read by the second pressure sensor and stops recording until the change rate of a reading number of the second pressure sensor is lower than a threshold value; and the core starting pressure gradient is calculated according to the reading number, changing over time, of the second pressure sensor. According to the device and the method, all that is required is to add a high-precision pressure sensor at an outlet of the standard bottle for recording pressure of the outlet, the high-precision pressure sensor has characteristics of low cost, high test precision, large range and the like, and the measurement problem of low flow speed is solved.

The present invention discloses a multi-camera in-loop simulation test method facing panoramic vision perception. The method comprises the steps of: establishing a target traffic scene model by employing an industrial personal computer, collecting panoramic image data by a camera, uploading the panoramic image data to a display screen, performing location parameter calibration of the camera by employing a sensor calibration module, performing feature point detection and matching and retaining effective matching pairs to complete image stitching and fusion, employing a target panoramic perception algorithmic routine to perform vision perception of the environment around a vehicle in real time, and finally, performing comparison and verification of the perception result obtained through thepanoramic perception algorithm and all the panoramic image data of virtual modeling to analyze the panoramic perception algorithm to obtain an in-loop simulation test estimation result. The multi-camera in-loop simulation test method facing panoramic vision perception generates a target panoramic image based on a virtual scene, the system provided by the invention comprises complete virtual traffic scene information to automatically perform image real information and perception information verification to perform estimation so as to greatly reduce human cost, consider the human marking errorsand improve the accuracy of estimation of the perception information result.

The invention provides a multi-state undisturbed soil column infiltration simulation system and an unsaturated osmotic coefficient determination method. The simulation system comprises a bottom member, one or more soil column experiment standard members which are connected onto the bottom member and a multi-strength rainfall infiltration device arranged at the top of the soil column experiment standard members; a soil filling member of the simulation system is composed of a plurality of standard members and is automatically controlled by a computer; the determination of a rainfall infiltration coefficient and an osmotic coefficient is realized based on the system and testing steps and a calculation method are provided; in a determination process, a large-diameter undisturbed soil column is used for an indoor experiment and the multi-strength rainfall infiltration device is used for simulating three types of strength rainfall infiltration boundary conditions, such as low-strength rainfall whole infiltration boundary condition, a middle-strength rainfall radial flowing infiltration boundary condition and a high-strength rainfall stable infiltration boundary condition; and the multi-state undisturbed soil column infiltration simulation system has the characteristics of strong practicability, good utilization effect and convenience for popularization and utilization.

The invention relates to an automatic driving environment perception-oriented small sample in-loop learning system and method. Algorithm training is carried out on a target learning model based on a data training set to obtain a target detection algorithm; small sample training set training learning is carried out on the physical ECU module, and a target perception algorithm is obtained; target algorithm testing of the system is carried out through the obtained target perception algorithm. The system comprises a sample input module, an image acquisition module, an image display module, a physical ECU module and a result output module. According to the automatic driving environment perception-oriented small sample in-loop learning system and method, learning method based on small-scale datais provided, the arranged in-loop experiment simulation platform is matched with simulation software to solve the problem that large-scale data are difficult to obtain in real vehicle automatic driving environment perception algorithm development; the scene self-definition function is achieved, a large number of scene data which are difficult to achieve in actual situations are generated throughsimulation, and the experiment development safety is improved.

The invention relates to the technical field of unconventional oil and gas reservoir damage evaluation, and discloses a device and a method for evaluating the damage degree of a working solution to a tight reservoir. The device comprises an upstream standard chamber, a downstream standard chamber, a core holding unit, a confining pressure pump, a needle valve, a vacuum pump, a constant-flux pump, a working solution intermediate container, a formation water intermediate container, a differential pressure gauge, a confining pressure gauge and the like. Evaluation on the damage degree of liquid permeability after a core of the tight reservoir is polluted by the working solution is realized via a differential pressure time variation parameter in a liquid pressure pulse attenuation process by an unsteady-state liquid pulse method; the experimental process efficiency is high; concerned experimental parameters are few; the current low-efficiency method for testing a damage rate of the liquid permeability by a steady-state method can be replaced; effective development of an unconventional oil and gas reservoir is facilitated; and the device and the method have certain popularization prospects.

The invention belongs to the technical field of light gas gun experiments, and particularly relates to a light gas gun driven through hydrogen and oxygen mixed gas detonation, in particular to a two-stage light gas gun driven through hydrogen energy. According to the technical scheme, the two-stage light gas gun driven through hydrogen energy comprises a combustor, a gas injection device, an ignition device, a pump pipe, a high-pressure cone section, a transmitting pipe, a target chamber and a magnetic speed testing device, wherein the ignition device is installed at one end of the combustor, the other end, opposite to the end with the ignition device, of the combustor is connected with the pump pipe, and a pump pipe membrane and a pump pipe membrane breaker are arranged at the junction; the gas injection device is used for injecting hydrogen, oxygen and inert gas into the combustor; a piston is arranged in the pump pipe; the large-diameter portion of the high-pressure cone section is connected with the pump pipe; the small-diameter portion of the high-pressure cone section is connected with the transmitting pipe, and a transmitting pipe membrane and a transmitting pipe membrane breaker are arranged at the junction; shots are arranged in the transmitting pipe, and one end of the transmitting pipe is located in the target chamber; and the magnetic speed testing device is installed at the tail end of the transmitting pipe and connected with an oscilloscope. The two-stage light gas gun is driven through hydrogen energy instead of gunpowder, damage to the gun is small, no particular product is generated, and a gun barrel can be cleaned conveniently after experiments.

The invention discloses a method and a device for determining saturation exponent of tight sandstone. The method comprises: according to nuclear magnetic resonance transverse relaxation time T2 spectrum of a core in a water saturation state and nuclear magnetic resonance transverse relaxation time T2 spectrum of cores in different water saturation states after different centrifugal forces are applied, determining geometric mean value of the nuclear magnetic resonance transverse relaxation time T2, the geometric mean value of the nuclear magnetic resonance transverse relaxation time T2 of the cores in different water saturation states after different centrifugal forces are applied on the cores, and water saturation of the cores after different centrifugal forces are applied; and according to the geometric mean value of the nuclear magnetic resonance transverse relaxation time T2 of the core in a water saturation state, and the geometric mean value of the nuclear magnetic resonance transverse relaxation time T2 of the cores in different water saturation states after different centrifugal forces are applied, and the water saturation of the cores after different centrifugal forces are applied, determining saturation exponent of the cores. The method and the device can accurately and efficiently determine the saturation exponent of tight sandstones.

The invention discloses a small-size eddy type test tube vibrating and blending device. The device comprises a blending box, a stepper motor is mounted at the bottom of the blending box, a main shaft of the blending box is connected with a transmission shaft through a flexible coupling, a rotary planetary gear is fixedly mounted in the middle of the transmission shaft, a first sleeve is movably mounted at the upper end of the transmission shaft, three or more planetary gear supports are welded to the outer wall of the first sleeve, a second sleeve is welded to the other end of each planetary gear support, and the middle of each supporting shaft is movably connected with the corresponding second sleeve. According to the small-size eddy type test tube vibrating and blending device, the supporting shafts of test tube blenders are mounted on a planetary gear, due to the fact that the planetary gear is meshed with a fixed planetary gear arranged on the inner wall of the blending box and the rotary planetary gear on the transmission shaft at the same time, when the transmission shaft is driven by the stepper motor to rotate, the test tube blenders can be made to revolve around the transmission shaft at the same time of rotating around the supporting shafts connected with the test tube blenders, and thereby automatic, rapid and uniform blending of liquid sample test tubes is achieved.

The invention discloses a test system and a test method for an underwater explosion impact equivalent loading experiment. The test system comprises a bullet emission system, a bullet speed measurement system, a water target cabin system and a pressure measurement system, wherein the dynamic energy of a bullet is converted to an impact load in a water target cabin by colliding the bullet with the water target cabin system, finally the impact load is loaded on a test piece to be tested, and a pressure time interval is measured by the pressure measurement system. The test system and the test method disclosed by the invention are capable of greatly realizing equivalent underwater explosion equivalent loading in laboratory conditions, and has the advantages of being high in controllability, simple to operate, low in experiment danger, high in repeatability, low in experiment cost, and the like.

The invention relates to a device for simulating a sedimentation rule of a proppant in a complicated fracture network formed by volume fracturing. The device comprises a main fracture composed of a fence, second-grade fractures vertical to the main fracture and third-grade fractures which are parallel to the main fracture and are connected by the second-grade fractures. The whole structure of the device can sufficiently simulate fracture networks with different types of underground reservoir stratum so that the versatility of the device is added. The visualization of the device is good for tracking and observing an experiment phenomenon and recording data; and the experiment efficiency is extremely improved and the device is convenient to repair and maintain. A research result obtained by using the device has a certain reference value for volume fracturing theoretical researches and field application.

The invention discloses a large-size roadway support laboratory simulation system which comprises a large-size roadway support simulation system, a pressurizing transmission system and a support data acquisition system. The large-size roadway support simulation system consists of a large-size roadway appearance simulation mechanism and a support simulation mechanism. The pressurizing transmission system comprises a base, a lateral pressurizing transmission mechanism, an axial pressurizing transmission mechanism, a side pressure power system and an axial pressure power system. The support data acquisition system comprises an axial extensometer, a radial extensometer, a computer, an EDC digital controller and a pressurization controller. The end, exposed to the inside of a rubber ring, of each anchor rod is provided with a sound emission sensor. The invention further discloses a large-size roadway support laboratory simulation method. The system and the method can simulate underground roadway support effect, roadway side deformation and floor heave which are caused under pressure really according tot geological conditions of different mines and can also simulate state of creep instability of the roadway under disturbance.

An automatic microscopic imaging system for multi-cell culture process, which is used for automatic imaging and analysis of long-term cell culture process. The system has the functions of automatic observation target switching, automatic low-power light source lighting, auto-focus and image fusion, intelligent online analysis of cell growth status, and tracking imaging of interested imaging regions and moving cells. Including light source system, optical mechanism, building-type multi-layer cell culture observation mechanism, multi-axis servo system, automatic culture imaging system control mechanism, etc., can realize simultaneous cultivation and imaging of various cells without human participation for a long time.

The invention relates to an assessing test machine for tribological properties of a high polymer compound material. The assessing test machine comprises an airtight box and is characterized in that a transmission shaft is arranged on a box wall, wherein a shaft end of the transmission shaft extending out of the box is connected with a safety shaft, a torque meter and a servo motor in turn througha coupler; a rotating angle disc is mounted on the safety shaft; one end of the transmission shaft inserted into the box is connected with a sample shaft through a universal crossing coupler; an upper sample clamp and a lower sample clamp are arranged around the sample shaft; a force transfer rod is connected with the upper sample clamp; one end of the force transfer rod extends out of the box and is connected with a heat-insulating shaft, a pressure sensor and a hydraulic cylinder; and a displacement measuring rod, which is in contact with a displacement sensor, is mounted on an extending part of the force transfer rod. The assessing test machine has the advantages that: the real working condition of the high polymer compound material is simulated and an assessing test for the tribological properties of the high polymer compound material is performed for detecting the abrasion loss and the change in frictional factor following the time of the high polymer compound material in real time.

The invention discloses a method for reducing perforation speed of nucleic acid molecules in a nanopore sequencing method. The method comprises the following steps of: adding the nucleic acid molecules to be measured into a nanopore sequencing device filled with electrolyte, wherein the nanopore sequencing device comprises an electrolytic cell provided with an anode and a cathode, and a solid nanopore film for separating the anode from the cathode of the electrolytic cell; placing the nucleic acid molecules to be measured in a cathode cavity of the electrolytic cell,; and when the nucleic acid molecules are measured, applying the voltage between the anode and the cathode, and introducing a reverse external field taking a pressure intensity external field as an electric field simultaneously. According to the method, the pressure intensity external field is reversely applied under the drive of an additional electric field, so that the speed of DNA (Deoxyribonucleic Acid) molecules is reduced when the DNA molecules pass through the solid nanopore, and the speed is reduced by about 50% to 80%, thus the time resolution of a DNA unimolecule detection technology is greatly improved. The method has very bright application prospect on a solid nanopore DNA molecule sequencing device.