16results about How to "Accurately obtained" patented technology

The present application belongs to the technical field of marine remote sensing, and particularly relates to a kind of full wind speed inversion methods based on spaceborne microwave active and passive combination physical statistics network, comprising the following steps: obtaining the brightness temperature data and backscattering coefficient of microwave radiometer and scatterometer, and performing data quality control;Construct sample data set;Load physical statistics constraint deep learning inversion algorithm model for training;Physical statistics constraint deep learning inversion algorithm model includes: input layer, network layer, physical layer, output layer;Network layer is composed of residual neural network, and physical layer is composed of Log formula of microwave radiometer and Log formula of microwave scatterometer to form microwave statistical matrix P matrix, which is a nonlinear matrix, and provides physical statistics constraint for the whole model;Output the wind speed of current full sea area.The present application effectively solves the problem of lack of physical support in the process of deep learning in marine parameter inversion, and provides high-quality and reliable wind speed products suitable for full wind speed range.

This invention discloses an online monitoring device and method for the concentration and flow rate of sludge in a channel-type internal return system in a wastewater treatment plant. The device includes a biological treatment tank; the biological treatment tank contains multiple anaerobic tanks, multiple anoxic tanks, and multiple aerobic tanks connected sequentially; a mixed liquor internal return channel is provided between the first anoxic tank and the last aerobic tank; the mixed liquor internal return channel is used to return the mixed liquor from the corresponding aerobic tank to the corresponding anoxic tank; a wedge-shaped ultrasonic sensor is installed in the mixed liquor internal return channel; the wedge-shaped ultrasonic sensor scans the mixed liquor in the mixed liquor internal return channel and converts the scanning result into an electrical signal, which is then uploaded to the wastewater treatment plant's central control room. The wastewater treatment plant's central control room detects and calculates the flow rate and concentration by comparing the interrelationships between multiple images or echo patterns ordered chronologically. This invention not only enables rapid and accurate acquisition of flow rate data but also allows for quick disassembly and maintenance.

The application discloses an interlocking system for an acetylene warehouse, which comprises a detection device, an alarm device, an exhaust device and a control device; the detection device is arranged in the acetylene warehouse and is used for detecting the gas concentration in the acetylene warehouse; the alarm device is electrically connected with the detection device and is used for issuing an alarm; the exhaust device is arranged in interlocking with the alarm device and is used for exhausting the gas in the acetylene warehouse when the alarm device issues an alarm; the exhaust device is provided with a plurality of exhaust devices; the control device is arranged outside the acetylene warehouse and is electrically connected with the alarm device and the exhaust device and is used for controlling the opening and closing of the exhaust device. According to the scheme, when the audible and visual alarm issues an alarm, the exhaust device can be quickly opened, so that the probability of accident escalation can be reduced.

This invention discloses a gas migration path monitoring system and method during hydrate extraction. A marine radiometric detector is installed inside a high-pressure vessel; radioactive carbon isotopes are used. 14 C-labeled methane gas was used to prepare natural gas hydrates with radioactive tracer properties; methane with tracer properties was obtained through depressurization extraction. 14 CH4, using marine radiometric detectors to detect methane generated during depressurization mining. 14 This invention analyzes the content and distribution of CH4 to reveal the gas migration pathways during natural gas hydrate extraction. It is simple and quick to operate, provides reliable and accurate experimental results, and enables remote real-time monitoring of gas migration pathways during hydrate extraction, solving the current problem of difficulty in obtaining gas migration pathways during natural gas hydrate extraction.

The application discloses a method, device, equipment and medium for water treatment process dosing control, wherein the water inflow, backflow, flocculation influencing factor, pre-filter turbidity and PAC dosing amount at the current time are acquired; the water inflow and backflow are summed to obtain the mixed water inflow at the current time; the mixed water inflow, flocculation influencing factor, pre-filter turbidity and PAC dosing amount are input into a target dosing prediction model to output a target dosing prediction value, and the target dosing prediction model is generated according to the mixed water inflow, initial dosing prediction value and optimal weight; the initial dosing prediction value is acquired based on an initial dosing prediction model, and the optimal weight is calculated based on a fitting function corresponding to the mixed water inflow. The core parameter of the mixed water inflow is introduced, the target dosing prediction model is obtained through multi-dimensional reuse of the mixed water inflow, the target dosing prediction value can be accurately obtained, and the dosing control effect of the water treatment process is improved.

This invention relates to the field of intelligent rail transit technology, providing a track detection method, apparatus, electronic device, and storage medium. The track detection method includes: obtaining target image data representing a track region from image data acquired by a camera; obtaining target point cloud data representing the track region from point cloud data acquired by a lidar based on the camera parameter matrix and the target image data; extracting a transformation matrix from the lidar coordinate system to the track plane coordinate system based on the target point cloud data; obtaining target track data generated by projecting the target image data onto the track plane based on the camera parameter matrix and the transformation matrix; and fitting a target track equation based on the target track data. This invention's track detection scheme combines the sensing capabilities of lidar with the motion-distortion-free and pixel-dense characteristics of camera imaging, improving track detection accuracy, increasing track detection distance, and efficiently and accurately obtaining track detection results.

The invention discloses a lithium ion battery thermal characteristic parameter in-situ test method based on isothermal calorimetry. The invention aims to solve the problems of discrete measurement points, long consumed time and the like caused by offline measurement in the existing battery thermal characteristic parameter testing method. The method comprises the following steps: firstly, building a battery isothermal heat measuring device, and providing a thermal characteristic parameter in-situ test method according to an equivalent heat transfer model; secondly, carrying out a charge-discharge experiment on the battery by using a small-rate current, and successively superposing cosine modulation powers with different frequencies in the flexible heating sheets on the upper and lower sides to realize measurement of modulation heat flow in the charge-discharge process; and finally, performing fast Fourier transform, complex plane solution, model parameter identification and other means on the response voltage signal and the excitation current signal under the multi-frequency cosine modulation power to obtain thermal characteristic parameters such as thermal capacity and heat conductivity coefficient of the battery under the whole charge state distribution. According to the invention, the synchronous in-situ measurement of the charge-discharge heat production power, the heat capacity and the heat conductivity coefficient along with the change of the charge-discharge depth of the battery is realized.

The utility model discloses a rock-soil loading device and a rock-soil testing device, and relates to the technical field of rock-soil stress simulation, the rock-soil loading device comprises a loading head, a horizontal bearing frame, a vertical bearing frame, a rotary bearing frame, a horizontal driving device, a vertical driving device and a rotary driving device, the horizontal bearing frame is used for being fixedly arranged above a model box, and the vertical bearing frame is used for being fixedly arranged above the model box; the vertical bearing frame can move in the horizontal direction along the horizontal bearing frame, the rotary bearing frame can move in the vertical direction along the vertical bearing frame, the loading head is arranged on the rotary bearing frame, the loading head can rotate, and the loading head is used for making contact with a rock-soil sample in a model box. Rotating torque, horizontal test force and vertical test force are applied to the rock-soil sample; the horizontal driving device is arranged on the horizontal bearing frame, the vertical driving device is arranged on the vertical bearing frame, and the rotary driving device is arranged on the rotary bearing frame; according to the utility model, the stress movement condition of the rock-soil sample can be comprehensively and effectively simulated.

The invention relates to a method for optimizing a favorable area of coal series source rocks in a high-over mature stage, and belongs to the technical field of oil-gas exploration. The method comprises the following steps: firstly, based on a geochemical parameter relation, determining an effectiveness evaluation standard of coal series source rocks in a high-over mature stage; determining TOC calculation formulas and identification standards of different source rocks based on correlation between actually measured TOC of different coal measure source rocks and logging parameters and logging responses of different source rocks; and finally, constructing coal measure source rock favorable area evaluation parameters, calculating TOC and thickness of different coal measure source rock layers of each well at a target interval, and determining the magnitude of the source rock evaluation parameters of each well, thereby determining a source rock favorable area and further providing a basis for exploration and deployment of coal measure natural gas resources. The validity evaluation standard determined by the invention is combined with a large amount of actually measured data, and the method is reliable and accords with the production result; the quality and the thickness of the source rock are considered while favorable area evaluation parameters are constructed, differences and contributions of different lithologic coal series source rocks are comprehensively considered, the method is more scientific, reasonable and comprehensive, and the application effect is good.

This invention discloses a control method and system for indirectly obtaining commutation signals based on BLDC terminal voltage, belonging to the field of brushless DC motor positionless control. The method includes: sampling the voltage of the floating phase at the current commutation point after a set electrical angle; sampling the voltage of the floating phase at the next detected zero-crossing point after the current commutation point; calculating the actual zero-crossing time using the linear relationship between the back electromotive force of the first and second sampling points; obtaining the lag compensation time from the zero-crossing point to the commutation point by combining the difference between the actual and detected zero-crossing times and the commutation reference time delay; sampling the same floating phase at an electrical angle interval of α after the current commutation point and at an electrical angle interval of (60°-α) after the turn-off point, summing the two samples, and determining whether the commutation is leading or lagging based on the result; and using a PI regulator to correct the lag compensation time in a closed loop. This invention is simple, practical, and can accurately obtain the commutation signal.

The utility model relates to the field of medical health, and the purpose is to provide an intraocular pressure measuring device to reduce the operation difficulty of user and improve measurement accuracy. The utility model discloses the technical scheme is: an intraocular pressure measuring device, characterized by: including the telescope cylinder with eyeshade, the rebound type pressure measuring module of setting in the telescope cylinder, the position adjusting module of connecting telescope cylinder and rebound type pressure measuring module, the controller of electric connection position adjusting module and rebound type pressure measuring module.

The application relates to the technical field of hole depth detection, and particularly discloses a hole depth data rapid detection device and a method thereof, which comprises a base, a measuring mechanism, a top plate unit and a measuring rope distributed along a measuring rod. The measuring rod comprises a plurality of first folding rods and a plurality of second folding rods arranged oppositely, the first folding rods and the second folding rods are connected in an up-down rotation mode, and the top of the measuring rope is fixed to the uppermost part of the measuring rod. The top plate unit comprises two groups of conveying belts arranged vertically on the two sides of the measuring rod, the conveying belts are respectively provided with a first top plate capable of driving the first folding rods to move vertically and a second top plate capable of driving the second folding rods to move vertically. The application can efficiently and accurately realize hole depth detection, and is simple in structure and suitable for promotion.

This invention provides a method for rapidly testing the two-dimensional shape characteristics of aggregates, relating to the field of civil engineering materials. The method includes: sieving to obtain a sufficient quantity of aggregates with a specified particle size; acquiring image information of the aggregates using an image acquisition device; processing the aggregate images using grayscale conversion, threshold segmentation, and binarization methods to facilitate subsequent calculations; obtaining the corresponding isoellipse information of the aggregate images by calculating the covariance matrix, further obtaining information such as the aspect ratio of the isoellipses; and calculating the perimeter and area of ​​polygons using contour edge recognition methods and Green's formula to obtain roundness values. This method can not only process aggregate information in large batches simultaneously to obtain the key two-dimensional shape characteristics of the aggregates in that batch, but also has advantages such as simple operation, short testing cycle, and accurate results, providing an efficient and convenient technical means for analyzing the impact of aggregate morphology on the performance of cement concrete and asphalt concrete.

The application discloses a kind of carbon dioxide and nitrogen mixed injection optimization method and device, comprising: various gas mixed ratio combination is input to the target three-dimensional geological model of oil and gas reservoir, according to the first simulation result output, from various gas mixed ratio combination, select the target gas mixed ratio combination theoretically feasible;Target gas mixed ratio combination is input to the target three-dimensional geological model of oil and gas reservoir, according to the second simulation result output, from target gas mixed ratio combination, select the first target gas mixed ratio combination actually feasible;According to the first target gas mixed ratio combination, select gas mixed ratio combination to form target gas mixture;From target position, obtain oil and gas reservoir monitoring data and compare with second simulation result, according to the comparison result adjustment gas mixed ratio combination, to optimize actual injection effect.The application can dynamically, accurately adjust gas mixed ratio, significantly improve oil and gas recovery, reduce overall injection cost.

The utility model relates to a strain performance testing device for a distributed strain optical cable, and belongs to the technical field of optical fiber monitoring technologies. Comprising a test bench, the test bench is provided with a fixed adjusting rack and a movable adjusting rack, the fixed adjusting rack and the movable adjusting rack are respectively provided with a clamp, a to-be-tested optical cable is fixed between the two clamps, and two ends of the to-be-tested optical cable are electrically connected with a tester through a connection jumper wire; the movable adjusting frame moves on the test bed through the movable driving mechanism, so that the movable adjusting frame is close to or far away from the fixed adjusting frame to load or unload the to-be-tested optical cable; a displacement digital display meter is arranged on the movable adjusting frame and is used for displaying the displacement amount of the to-be-measured optical cable on the movable adjusting frame; the fixed adjusting frame is provided with a displacement dial indicator, and the displacement dial indicator is used for displaying the offset of the to-be-measured optical cable on the fixed adjusting frame. The test precision can reach the sensor level, the operation is simple and convenient, and the test efficiency is greatly improved.