13results about How to "Strong interference" patented technology

The present application belongs to the technical field of microbial resource development and petroleum bioengineering, and particularly relates to a Shewanella producing surfactant with multiple tolerances, a bacterial agent and application of the Shewanella in thick oil viscosity reduction. Shewanella fodinae Specifically, the present application provides a Shewanella (S-11) producing phospholipid surfactant, a low-cost preparation method based on the strain, Bacillus Z-13 and Vibrio fluvialis with glycerol as a carbon source. The S-11 has the dual abilities of producing phospholipid surfactant and cracking long-chain alkanes, and the produced surfactant is a complex phospholipid system, with an emulsification index (E 24 ) stable at 55% or above under the conditions of pH 5-10, temperature 15-55 DEG C and high salinity. The three-strain complex fermentation process with glycerol as a carbon source can significantly reduce the production cost while maintaining excellent emulsification performance, thereby being suitable for thick oil exploitation, pipeline transportation, oil pollution remediation and other fields.

The present invention relates to a fault identification method based on the correlation of forward and reverse traveling waves of a line, comprising: S1, collecting real-time voltage and current signals of a multi-terminal flexible DC power grid system; S2, calculating the line mode voltage based on the real-time voltage, obtaining the line mode voltage differential value as a starting criterion, returning to S1 if the line mode voltage differential value is not greater than the preset voltage value, and entering S3 if the line mode voltage differential value is greater than the preset voltage value; S3, fitting the current signal, obtaining the current change trend, and judging the fault within the area and the forward out-of-area fault and the reverse out-of-area fault based on the current change trend; S4, obtaining the similarity of the voltage traveling waves on this side and the opposite side, judging the fault within the area and the forward out-of-area fault based on the similarity, and selecting the fault pole by using the ratio of the voltage mutation amount after the fault when the fault is an internal fault. The present invention does not require a complex calculation process, and only needs to extract the voltage traveling waves at both ends of the fault, and the algorithm has good reliability.

The invention belongs to the technical field of metal organic framework materials, and particularly relates to a bimetal organic framework luminescent material. The chemical formula of the material is [Tb6Pr4 (DBA) 6 (OH) 4 (H2O) 5. (H3O) 4] n, the preparation method comprises the following steps: step 1, uniformly mixing Tb (NO3) 3.6 H2O, Pr (NO3) 3.6 H2O, H5DBA, 4, 4-dipyridyl, H2O, DMF and HNO3, and putting the mixture into a reaction kettle; 2, the temperature is increased to 160 DEG C in an electric heating oven, and after the constant temperature is kept for 72 h, the temperature is decreased to the room temperature at the speed of 4 DEG C / h; and 3, filtering the synthesized product, washing with ultrapure water and ethanol for multiple times, and naturally drying in air to obtain the green blocky Tb / Pr-MOF crystal. The bimetal organic framework luminescent material prepared by the invention is applied to inspection of Fe < 3 + > and MnO4 <->. The luminescent material disclosed by the invention has the advantages of higher sensitivity, excellent selectivity and stability, low detection line and the like in identification of MnO4 <-> and Fe < 3 + >, and efficient fluorescence identification is realized. Therefore, the luminescent material is a promising fluorescent sensing material and provides a new visual angle for synthesizing a multi-response sensing material.

A high-temperature multi-atmosphere microwave energy grinding equipment and method belongs to the technical field of high-temperature grinding equipment and methods, and is used to study the wear resistance of dielectric materials. The technical scheme is: microwave sources are respectively arranged on the upper, lower and rear sides of the outer wall of the multi-mode microwave resonance chamber, the power mechanism and the clamping mechanism are respectively installed on the left and right sides of the multi-mode microwave resonance chamber, and a microwave heating rotary grinding device is arranged in the multi-mode microwave resonance chamber. The left side of the microwave heating rotary outer jacket of the microwave heating rotary grinding device is connected to the power mechanism, and the right side is connected to the clamping mechanism. The grinding chamber is located in the microwave heating rotary outer jacket, and the vacuuming mechanism and the ventilation mechanism are respectively connected to the multi-mode microwave resonance chamber, and the furnace door is installed in front of the multi-mode microwave resonance chamber. The present invention can realize the measurement of the wear parameters of dielectric materials under the conditions of electromagnetic waves, high temperature, multi-atmosphere and high-speed rotation, and provides scientific data for the performance research of major engineering materials, which is highly innovative and practical.

The utility model discloses a kind of drainage mechanism for air compressor air receiver, belong to air compressor auxiliary equipment technical field, a kind of drainage mechanism for air compressor air receiver, including main pipeline, the one side of the main pipeline is equipped with stop valve, the one side of the stop valve is equipped with three-way joint, the one side of the three-way joint and side are respectively threadedly connected with connecting pipe one and connecting pipe two;By setting up the automatic drainage assembly formed by U-shaped pipe and check valve, using siphon principle and gravity effect, the timed automatic discharge of condensate is realized.When the pressure generated by the weight of the water accumulated in the U-shaped pipe is sufficient to overcome the opening pressure of the check valve, the valve opens, and the water is quickly discharged under the action of negative pressure and gravity. This process does not require power drive, there is no risk of jamming of moving parts, the structure is extremely simple, reliable and durable, and has strong resistance to oil contamination and impurity interference. It fundamentally solves the problem of easy clogging and damage of traditional automatic water drain.

The invention discloses modified phosphate tailing ceramsite for advanced treatment of phosphorus-containing wastewater and a preparation method and application thereof, and relates to the technical field of comprehensive utilization of phosphate tailing resources, the preparation method comprises the following steps: (1) mixing and grinding reverse flotation phosphate tailings, direct flotation phosphate tailings and montmorillonite to obtain a mixture; (2) granulating the mixture to obtain raw material nodules, and drying to obtain dried raw material nodules; (3) roasting the dried raw material balls in a muffle furnace to obtain primary tailing ceramsite; (4) putting the primary tailing ceramsite into deionized water, and dropwise adding a rare earth modified solution with the pH value of 4-5 under the condition of stirring in a water bath at the constant temperature of 30-60 DEG C; after dropwise adding, continuously stirring for 2-6 hours in a constant-temperature water bath, standing and aging for 8-10 hours in the constant-temperature water bath, taking out and drying to obtain the modified phosphate tailing ceramsite for deeply treating the phosphorus-containing wastewater. The efficient phosphorus removal ceramsite has the advantages of low cost, short production period, good phosphorus removal effect and the like, and the obtained efficient phosphorus removal ceramsite has an extremely strong adsorption effect on phosphate.

The present application relates to an array electrode intelligent sensing system for tunnel gushing water monitoring and a method thereof. The system comprises a flexible sensing array implanted inside or on the surface of a tunnel lining structure, an intelligent acquisition node and a data analysis platform. The flexible sensing array is composed of multiple composite sensing units arranged in a predetermined topological structure, each unit integrating a main electrode for measuring resistivity / potential, a temperature sensor for measuring temperature and a flexible strain sensor for measuring deformation; the intelligent acquisition node connects the sensing array to synchronously acquire resistivity, temperature and strain data in multiple channels, and preliminarily processes and extracts features from the original data; the data analysis platform receives data from multiple nodes, and through a multi-parameter spatio-temporal fusion analysis model, realizes the collaborative intelligent analysis from "water-bearing state perception" to "structure deterioration evaluation" to "gushing water risk early warning". The present application realizes the fine, three-dimensional and real-time monitoring of the incubation process of tunnel water disasters.

The invention discloses an OTFS modulation method suitable for underwater high-speed mobile communication, and the method comprises the steps: generating a real number random number sequence and an imaginary number random number sequence, dividing a time delay grid and a Doppler grid, and generating binary random data; performing digital modulation on the binary random data to generate a coded signal in a time delay-Doppler domain; constructing a synchronization head signal, and carrying out frequency spectrum shifting on the coded signal and the synchronization head signal; the transmitting signal reaches a receiving end through an underwater acoustic channel to obtain a receiving signal; and finding the specific position of the required signal in the received signal, calculating the impulse response and Doppler parameter of the channel, and constructing a channel model to realize high-speed communication of the underwater acoustic channel. According to the method, the information is directly modulated to the time delay-Doppler stretching domain, the method accords with the actual physical process, the coupling effect of the Doppler domain and the time delay domain is considered, the effect is better, the communication rate is improved, and the error rate can be reduced.

The application relates to the technical field of intelligent construction, and discloses a construction elevator identification and relative pose estimation method based on a laser profile, which comprises the following steps: performing preprocessing on two-dimensional laser scanning data, and outputting preprocessed polar coordinate laser points; converting the preprocessed polar coordinate laser points into two-dimensional plane rectangular coordinate points, and generating a complete two-dimensional point set; performing spatial clustering according to the Euclidean distance of the laser points, and taking the clustering result as the pre-input of line segment fitting; extracting the projection interval of all inner points on the direction vector to generate a standard line segment; filtering and screening in combination with the geometric structure features of the inner cavity of the construction elevator to obtain an effective construction elevator profile; transforming the coordinates in a radar coordinate system to a global coordinate system of a robot chassis to solve the original relative pose error result of an AGV relative to the construction elevator; performing time sequence smoothing and noise reduction processing on the original relative pose error to output the relative pose of the construction elevator and a pose effective flag. The application can accurately identify the construction elevator and stably output the pose.

A production apparatus and processing method for thin-walled micro-pitch high-efficiency heat exchange tubes are disclosed, relating to the field of high-efficiency heat exchange tube production technology. The production apparatus of this invention includes a frame, a tie rod, a core head, a lead screw module, a servo motor, a claw plate, and a rolling head. One end of the tie rod is mounted on the frame and parallel to the bottom of the frame. The end of the tie rod away from the frame is connected to the core head. A servo motor is mounted on the end of the frame away from the tie rod. The output end of the servo motor is connected to the lead screw module. A claw plate is mounted on the lead screw module. The rolling head is mounted on the frame. The high-efficiency heat exchange tubes produced by the method of this invention are of great significance for energy saving, water saving, saving operating costs, and reducing reinvestment. They also have advantages such as low resistance, small size, and material saving.

The application discloses a kind of based on model predictive control algorithm's pneumatic system positioning control method, comprising: the hardware composition and action principle of pneumatic system are analyzed, the mathematical model of pneumatic system is divided into the mass flow equation of gas, the mathematical equation of slide valve, piston force balance equation, based on above-mentioned three equations construction pneumatic system slide valve opening and system output mathematical model;Valve core is analyzed to find the midpoint position of making the stable inaction of both sides of cylinder, design pneumatic system setting process, according to setting process determines the various parameters of pneumatic system slide valve opening and system output mathematical model;Based on the setting process of design, design pneumatic system model predictive controller, this method designs pneumatic system model predictive controller, suppresses each kind of disturbance in system, inside and outside, realizes to pneumatic system and carries out good control.

The invention discloses a handheld steel bar counter, comprising: a line laser transmitter, a binocular camera, a gyroscope, a data processing module, a display screen, and a manual operation control module, wherein: the line laser transmitter transmits a line laser to project onto a steel bar end face according to a control instruction of the manual operation control module, and obtains a contour laser line of the steel bar end face when the line laser is projected onto the steel bar end face; the binocular camera obtains a left steel bar end face contour image and a right steel bar end face contour image with contour laser lines, wherein parameters of the left camera and the right camera of the binocular camera are the same; the data processing module analyzes and processes the left steel bar end face contour image and the right steel bar end face contour image to obtain three-dimensional data of the steel bar end face contour; the data processing module obtains a steel bar end face contour diagram and steel bar number information according to the three-dimensional data of the steel bar end face contour and a corresponding relationship; and the display screen is used for displaying the steel bar end face contour diagram and steel bar number information.

The invention discloses a coal face magmatic rock invasion pulse hydraulic fracturing efficient rock crushing control method, and particularly relates to the technical field of coal face control. An interference identification model is constructed based on microseismic event anisotropy ratio and spectrum offset coefficient characteristic parameters, and adaptive regulation and control and operation strategy adjustment of pulse frequency are realized through real-time monitoring and dynamic grading of interference degrees, so that energy accumulation and disaster risks caused by misjudgment are avoided; and meanwhile, a control strategy is continuously optimized based on operation feedback, and the accuracy and adaptability of fracturing response are improved, so that efficient, controllable and safe crack induction and crushing control are realized in a magmatic rock invasion body area, and the coal mining efficiency and the operation safety level are remarkably improved.