46 results about "Real field" patented technology

The invention discloses a method and system for testing a configuration logic design of a DCS (Distributed Control System) of a nuclear power station. The method comprises the following steps of: importing a designed configuration logic diagram to be tested into a selected minimal configuration DCS; communicatively connecting the selected minimal configuration DCS with an engineering simulation process platform; according to the preset test progress, running the configuration logic diagram to be tested on the minimal configuration DCS, and interacting data with the engineering simulation process platform, then recording a test result; and according to the test result, modifying the configuration logic diagram to be tested. According to the method and system disclosed by the invention, the configuration logic diagram is tested by using the minimal configuration DCS and the engineering simulation process platform, the correctness and completeness of the result can be virtually verified without depending on real field equipment, the debugging work period is shortened, and the safety and reliability of the design process is guaranteed.

The invention belongs to the technical field of a cutting tooth performance detection test, particularly relates to a test platform for a cutting mechanism of a cutting tooth on a rock, and solves the problems that the conventional test instrument for the process of cutting the rock by the cutting tooth cannot be close to real field working conditions, and the test conditions are instable and cannot meet the practical needs of cutting tooth theory analysis. The test platform comprises a base, wherein stone moving guide rails and knife rest moving guide rails are arranged on the base; a stone moving device is arranged on the stone moving guide rails; the stone moving device comprises a stone table; a stone table drive motor is connected to the outer side of the stone table through a stone table drive screw rod; a stone clamping device is arranged on the stone table; and a knife rest moving device and a cutting tooth drive mechanism are arranged on the knife rest moving guide rails. The test platform has the benefits as follows: a test system close to the real cutting process can be provided under stable test conditions; the function is complete; the test range is large; the control accuracy is high; and the test data are reliable.

The invention discloses an experiment device for simulating dam overtopping of a tailing dam under a rainfall action and an experiment method and belongs to the technical field of theories and experiments of the dam overtopping of the tailing dam under the rainfall action. By combining two aspects including a theoretical technology and a testing technology, a dam overtopping mechanism of the tailing dam is jointly disclosed. The experiment device comprises a water circulating and hydrostatic load applying system, a simulated rainfall system, a levelness control system and a simulated reservoir area system; when the simulated reservoir area system is used for simulating rainfall under a real field condition, a dam body attribute replacement body need to be replaced with a real material. By combining a differential hydrostatic pressure theory based on a water-crossing section shape and a similar experiment for simulating real rainfall conditions, the experiment device has the advantages of water saving and environment protection, low cost, convenience and flexibility in dynamic and static load application, flexibility of replacing the dam body attributes, high controllability and the like.

The invention discloses a method and system for realizing the multi-person interaction by combining the 3D and virtual reality technologies and a medium. A scene presented on a 3D display screen and a3D scene presented in a virtual reality head-mounted display are operated in a same virtual environment, a position tracking server determines the corresponding position and motion trail of each experiencer in a real field, and a virtual environment synchronization server synchronizes the virtual scene data changes of a 3D host and a virtual reality host. The 3D host and the virtual reality hostrespectively determine the corresponding positions and motion tracks of the experiencers in the same virtual scene according to the positioning data of the experiencers so as to determine the displaycontent under the corresponding visual angle of each experiencer and render the display content, the 3D display screen displays according to the content rendered by the 3D host, and a virtual realitydisplay device displays according to the content rendered by the virtual reality host, so that each 3D experiencer and each VR experiencer view the same virtual scene from the respective perspectives,and the real-time interaction between multiple persons, multiple platforms and the virtual world is realized.

The invention discloses a system and a method for simulating borehole operation. The system is that each of a well repair driller's console system, a choke control panel system and a blowout prevention control panel system comprises a PLC, a front end operation input device and a front end output display device; each front end operation input device comprises a plurality of switches, knobs and valves; each front end output display device comprises an indicator light, a pressure gauge and a thermometer; a main control computer is equipped with a calculating module which is used for calculating the indicator light state, pressure gauge data, thermometer data and working condition data of a device in a virtual scene through a mathematical model according to the switching state, the knob value and the valve opening degree data; a virtual presentation module is arranged on a graph processor and used for presenting the simulated real field scene and the device working condition according to the working condition data of the device in the virtual scene. According to the system and method, the real device is highly simulated, and thus students can easily understand and master; the system is safe to use; the intelligent scoring is performed, so that the fairness and justice are ensured; in addition, the problem of wrong operation can be accurately pointed out.

The invention provides a three-dimensional fire fighting alarm receiving and disposing linkage system, which comprises a three-dimensional scene building module, an alarm receiving module, a fire location positioning module, a fire scene marking module, a fire information input module and an express printing module, wherein the three-dimensional scene building module is used for building a three-dimensional virtual scene; the alarm receiving module is used for receiving fire alarm information; the fire location positioning module is used for positioning a fire location in the built three-dimensional virtual scene; the fire scene marking module is used for marking the fire scene information in the built three-dimensional virtual scene; the fire information input module is used for marking aspecific fire outbreak area, a fire size and a spreading condition in the built three-dimensional virtual scene; and the express printing module is used for generating an alarm express according to the information inputted by the fire location positioning module, the fire scene marking module and the fire information input module. According to the three-dimensional fire fighting alarm receiving and disposing linkage system provided in the invention, when a police operator receives a fire alarm, a real field scene can be quickly and effectively provided for an engineer fire-fighting unit, andcommand and rescue are facilitated.

The invention discloses a complex field blind source separation method. A complex filed target matrix system is built, and real symmetrization is carried out to obtain a reconstructed target matrix system formed by a real-value target matrix, the complex field combined diagonalization problem is converted into the real field combined diagonalization problem to solve the complex field blind source separation problem; compared with other algorithms that are also suitable for the complex filed, the method doesn't restrain a diagonalization target matrix to be combined into a hermitian symmetric matrix or a positive definite hermitian matrix and is wide in application; an alternative least square iterative algorithm based on combined diagonalization least square cost functions is adopted, and the structural characteristics of the target matrix system formed by the real-value target matrix are fully used to realize the combined diagonalization of a new target matrix system; The cost functions are solved by the alternative least square iterative algorithm, the estimate values of a mixed matrix are obtained, the blind source separation is realized, and the simulation results verify that the method provided is high in convergence precision.

Using the surgical instrument guidance system of the present invention, a doctor can instantly obtain a real field of view of a surgical site of a patient, a three-dimensional medical image that coincides with a surgical site of the patient, and a real-time positional relationship between the surgical instrument and the surgical site of the patient. The surgical instrument guidance system provides an entrance guiding interface, an angle guiding interface and a depth guiding interface to help the surgeon monitor whether the position relationship between the surgical instrument and the patient's surgical site conforms to the preoperative planning and specifically increases the accuracy of position, angle and depth of the surgical instrument on the surgical site of the patient.

The invention discloses a carrier phase correcting method based on QAM modulation, which comprises the steps of: forming a signal set S1 after taking the biquadrate of all signals S0j in a received signal set S0, calculating a correcting angle of theta1-phi of the received signal corresponding to each point on the class1 in the S1, correcting the S1 signal so as to acquire an S2, calculating to obtain the minimum value of a real field of the received signal which is subjected to biquadrate extraction and corresponds to each point on the class 1, setting the minimum value as a selected threshold value limit, dividing the signals in the S2 into I, II and III three areas on the basis of the condition as follows: Rcostheta is less than limit, Rcostheta is more than limit and Rsintheta is morethan 0, Rcostheta is more than limit and Rsintheta is less than 0, performing the maximum likelihood fit on each received signal in the I, II and III areas according to three angles of phi, 4*atan(1/3) and -4*atan(1/3), calculating a second correcting angle beta, and correcting the angles of (theta1-phi+beta) of all the received signals in the signal set S0. In the method provided by the invention, the biquadrate operation and the correcting operation need not be performed twice, so the operand is greatly reduced, the dependence on hardware is reduced and the digital circuit linear-speed treatment is convenient to perform.

The invention relates to a vehicle-mounted camera-based virtual reality experience system, which comprises a vehicle-mounted camera, an image processing computer and automobile simulation equipment, wherein the vehicle-mounted camera, the image processing computer and the automobile simulation equipment are sequentially connected. Real dynamic images shot by the vehicle-mounted shooting equipment are used as making materials, and are closer to the reality; real field photos are used as making materials, so that the making flow is simplified and the period is shortened; and the making cost is greatly reduced.

The invention discloses a malicious anchor node detection method based on an isolated forest and a sequential probability ratio test. The malicious anchor node detection method combines an isolated forest algorithm and a voting mechanism to obtain reliable information in anchor nodes, and builds a detection model through the reliable information. According to the malicious anchor node detection method, only a single ranging algorithm is needed for ranging, and multiple ranging algorithms do not need to be used for ranging, and meanwhile, the assumption that one of multiple ranging methods is not attacked completely is avoided, so that the malicious anchor node detection method is more suitable for being used in a real field, that is, it does not need to assume that the malicious anchor node detection method is not attacked completely. Normal samples are screened by utilizing an isolated forest, and reference anchor nodes in the normal samples are screened by utilizing a voting mechanism to realize multiple selection, and the reliability of the reference anchor nodes is ensured, so that the subsequent process of obtaining malicious anchor nodes according to the reference anchor nodes is indirectly ensured; and the difference value information is used for sequential probability ratio inspection, so that the detection of malicious anchor nodes is further improved, and the detection accuracy of the anchor nodes is improved, and the final positioning accuracy of subsequent target nodes is also improved.

The invention relates to a method for realizing water-fat separation. The method comprises the following steps of collecting a plurality of magnetic resonance images with different echo time intervals; dividing the plurality of magnetic resonance images into a plurality of sub blocks with different resolutions; respectively selecting the minimum values in the fitting errors of the plurality of sub blocks as field pattern estimation values of the sub blocks corresponding to the resolutions, and respectively selecting seed blocks corresponding to the resolutions according to the field pattern estimation values; obtaining pixel seed points at the corresponding original image resolution of different resolutions by using the plurality of seed blocks corresponding to the resolutions, and merging the pixel seed points to obtain a final pixel seed point; selecting the real field image value of the rest pixel points by using the final pixel seed point; and performing calculation on the plurality of magnetic resonance images by using the real field pattern values of all of the pixel points to respectively obtain a water pattern and a fat pattern. By adopting the method, the efficiency of selecting the real field pattern value can be effectively improved; and the effective water-fat separation can be performed through the real field pattern value. In addition, the invention also provides a system for realizing water-fat separation.

The invention provides a method and a system for synchronizing a database. The method comprises the following steps that after a communication server receives an updating command from a controller, a user state list of the communication server enters a blocking mode, and the communication server updates a user state in the user state list into a spare field in a database server; if the communication server does not update the user state into the spare field within a first preset time, the communication server requests a first policy to a policy server; according to the first policy, the communication server processes the user state to be processed in the user state list to be processed and updates the processed user state into a real field of the database server; and if the communication server successfully updates the user state into the spare field within a second preset time, the communication server informs a controller, and after the database server synchronizes the spare field into the real field according to a synchronizing command of the controller, the communication server releases the blocking mode of the user state list according to an unlocking command of the controller.

A telescope optical system having an objective lens system and an eyepiece lens system; wherein: the objective lens system includes a multi-layer-type diffractive optical element (PFo), and cemented lenses (So1) provided with a lens having positive refractive power and a lens having negative refractive power; the eyepiece lens system includes a multi-layer-type diffractive optical element (PFe), and cemented lenses (Se1) provided with a lens having negative refractive power and a lens having positive refractive power; and the condition represented by: 2≦|(Po/FNO)/{Pe/(θ×m)}|≦15 is satisfied, where Ko represents the power of the objective lens system, Kodoe represents the power of the diffractive optical element (PFo) of the objective lens system, and Po is defined as Po=Kodoe/Ko; Ke represents the power of the eyepiece lens system, Kedoe represents the power of the diffractive optical element (PFe) of the eyepiece lens system, and Pe is defined as Pe=Kedoe/Ke; and FNO represents the F-number of the objective lens system, θ represents the real field of view of the telescope optical system, and m represents the magnification of the telescope optical system.

The disclosure relates to a new Alamouti-based mapping scheme for use in a real field FBMC modulation system which can reduce FBMC-intrinsic interference and allows approaching optimal performance. The Alamouti-based mapping scheme proposed herein can be used for implementing space-time or space-frequency block codes (STBC/SFBC) codes. The proposed Alamouti-based mapping scheme suggests specific patterns to negate/invert signs of the modulation symbols of Alamouti pairs in the Alamouti mapping. By using these special patterns of sign negation, the FBMC-intrinsic interference can be reduced significantly so that it may become possible to use conventional Alamouti demapping/decoding procedures on the receiving side with an overall acceptable performance in real life systems.

The invention discLoses a dynamic footbaLL shooting training device. The dynamic footbaLL shooting training device comprises a barrier simuLation assembLy, a controLLer, a training fieLd simuLating afootbaLL fieLd and a goaL frame, wherein the barrier simuLation assembLy is used for simuLating bLocking movement of other pLayers on a reaL fieLd, and comprises muLtipLe stopping devices, and the muLtipLe stopping devices are distributed on the training fieLd in dot shapes; containing grooves distributed in dot shapes are formed in the training fieLd, the muLtipLe stopping devices are arranged atthe containing grooves in a stretchabLe manner, and comprise drivers; the controLLer transmits signaLs to a wireLess receiving circuit board to controL the drivers, and the drivers drive the stoppingdevices to stretch up and down and carry out angLe adjustment; through the stopping devices capabLe of aLLowing a coach to carry out and adjust any position outside the fieLd, dynamic simuLation is carried out, actuaL combat responses of opponents can be highLy simuLated during actuaL combat, tacticaL training can be carried out whiLe technoLogy training, training pertinence is high, the investment of training partners is reduced, and the trainer more efficientLy controL the fuLL fieLd.

The invention provides an unmanned ship remote control system based on a panoramic vision system. A set of panoramic camera is additionally arranged on an unmanned ship; collected video information isfed back to a remote console in real time through a high-speed data communication system; The ship surrounding video information is displayed on the far-end control console by 360 degrees, and the most real and most comprehensive ship and ship surrounding environment information can be provided for far-end control personnel by combining a visual enhancement (AR) technology, so that complex operations such as ship departure, berthing and the like can be realized remotely and accurately. Through the time marking system, the angle marking system and the video data splicing system, the problem that high-definition video data cannot be completely transmitted can be solved, the data are completely transmitted to the remote control system, and the most real field environment is provided for remote control personnel.

The invention discloses a fault generation system based on analog quantity, which can simulate fault generation through digital-analog conversion output based on the set of a user. The fault generation system at least comprises a fault generator module, a digital-analog conversion output module, a communication module and a man-machine interface module, wherein the fault generator module, the digital-analog conversion output module, the communication module and the man-machine interface module are sequentially and electrically connected. The system is safe, has high efficiency, can generate faults of phase failure, three unbalanced phases, overvoltage, overcurrent, input undervoltage, output open circuit, grounding and the like through digital-analog conversion output based on the set of the user, also convert a waveform picture file recorded by an oscilloscope to waveform data, and generate a waveform which is consistent with an image, thereby being convenient to reappear the real field condition.

The invention discloses an optimal control method of a single-machine infinite-bus affine nonlinear system. According to the optimal control method of the single-machine affine nonlinear system, based on a single-machine infinite-bus system, nonlinear optimal control design is performed; the equation of motion of the generator rotor of the single-machine infinite-bus system is written in the mode of an SISO (single input single output) affine nonlinear system; through coordinate mapping, a completely controllable and precisely linearized system can be obtained; then according to the design method of a quadric-form optimal control LQR (linear quadratic regulator), the controlled quantity of the precisely linearized system can be solved, accordingly a nonlinear optimal controller of the original system can be obtained, meanwhile, real-time online semi-physical simulation is performed to test the practical feasibility of a scheme. The optimal control method of the single-machine infinite-bus affine nonlinear system achieves precise linearization of the single-machine infinite-bus system and meanwhile takes the condition of non-real-time performance of pure digital offline simulation, thereby verifying the control effects of a controller based on theoretical control in actual real field application through semi-physical simulation experiments. By testing the effects of the designed controller during actual application, the optimal control method of the single-machine infinite-bus affine nonlinear system is beneficial to high truthfulness of the designed algorithms.

The invention provides a method and a system for updating a user state. The method comprises the following steps that a controller stores a corresponding relationship table between a user and databases, wherein each database is located in a corresponding communication server; the controller receives and analyzes a link request of the user, and allocates the user to the corresponding communication server to perform communication according to the stored corresponding relationship table between the user and the databases; after the communication server receives an update instruction sent by the controller, the user state of the communication server enters a blocking mode, and the communication server updates the user state in a user state list to a spare field of an internal database; and if the communication server does not update the user state to the spare field in the first preset time, the communication server processes the to-be-processed user state in a to-be-processed user state list according to a first policy stored by the communication server, and updates the processed user state to a real field of the internal database.

The embodiment of the invention provides an electric meter abnormity switching apparatus comprising a signal acquiring and comparing unit, a PLC control unit, and a relay control unit. The signal acquiring and comparing unit is connected with an operating table, is used for acquiring the voltage and the loop resistance of the operating table, and respectively compares the voltage and the loop resistance with a set voltage threshold value and a set resistance threshold value in order to generate a level signal, wherein, a high level is outputted if the voltage is over the voltage threshold value or the voltage threshold value is over the set resistance threshold value, otherwise, a low level is outputted. The PLC control unit is connected with the signal acquiring and comparing unit and outputs a PCL control instruction to the relay control unit according to the level signal outputted by the signal acquiring and comparing unit. According to the PCL control instruction, the relay control unit controls the disconnection and the connection of the relay. The electric meter abnormity switching apparatus may automatically or manually cut off the operating table when the operating table breaks down or is required to be powered off in order to ensure uninterrupted power supply of field real devices, thereby enabling real field load operation and important significance to fault hidden trouble discovery of electric meters.

The invention relates to a constant-current type non-contact magnetized nail sorting and packing method and equipment thereof, comprising the steps that: a constant-current type non-contact exciting power supply is adopted to cause nails to be sorted in a constant electromagnetic field; when the sorting of the nails is completed, the current is smoothly attenuated by the power supply to realize the disconnection of a magnetized circuit in the condition of zero current; the method adopts an inverse and reversing switch technique to realize the non-contact switching of the direction of the exciting current to control the whole process of magnetization and demagnetization. The constant-current type non-contact magnetized nail sorting and packing method provided by the invention can constantly protect the magnetized current and the magnetic field from the influences of factors such as the voltage fluctuation of an electric network and the temperature rise of magnetized coils, etc., and can adjust field current by closed loops according to a real field measured value and optimally control the magnetizing effect. The constant-current type magnetized method can further realize the smooth attenuation of the magnetized current to cause the magnetized circuit to be disconnected in the condition of zero current, thus improving the stability and the reliability of the equipment.

The invention discloses an ocean wind power plant environment corrosion simulation experiment device. At present, the ocean environment real field corrosion and protection experiments are urgently required for offshore wind power foundation support structure and electric equipment material selection. The ocean wind power plant environment corrosion simulation experiment device comprises a simulation experiment pool, wherein five simulation regions and a plurality of sample hanging piles in longitudinal arrangement are arranged in the simulation experiment pool; the five simulation regions are respectively a sea mud region, a full immersion region, a tidal range region, a sputtering region and an atmosphere region in sequential arrangement from bottom to top; a water inlet, a water outlet and a silt discharging opening are formed in the pool wall of the simulation experiment pool; a plurality of sample hanging fixing clamps in sequential arrangement from top to bottom are arranged on the sample hanging pile; the device also comprises an instrument box and an operation and control system; the instrument box is used for measuring the corroded data of sample sheets and the protection effect; the operation and control system is used for controlling the environment of the five simulation regions. The device provided by the invention provides accurate design data for the material selection and anti-corrosion technology for the electronic equipment and the wind power plant environment foundation support structure; the convenience is brought to a wind power plant designer and an electric field management and application person.

The invention discloses a test device and a research method for migration and habitat preference behaviors of aquatic animals. The test device comprises a water tank with a circulating waterway, a filter screen baffle, a drive water pump, a light-reflecting observation area, a video-recording observation area, a radio frequency identification system and a lighting system. The test device and the research method for the migration and habitat preference behaviors of the aquatic animals have the advantages that field ecological parameter simulation is firstly applied to construction of indoor aquatic animal behavioral research devices and behavioral researches, so that the research devices simulate field ecological parameters (water flow velocity, water depth, river bed materials, river geomorphology and light intensity) to the greatest degree, and research results are closer to real field conditions of the aquatic animals.

The invention provides an electromagnetic detection noise measurement system and a noise reduction method. The system comprises a transmitting electrode connected with a transmitting machine and a receiving electrode group disposed at a preset measurement distance to the transmitting electrode, wherein each receiving electrode is connected with a signal acquisition apparatus. The electromagnetic detection noise measurement system also comprises a noise measurement electrode arranged between two adjacent receiving electrodes, wherein the noise measurement electrode is connected with the signal acquisition apparatus; the transmitting electrode and the receiving electrodes are disposed in a same direction of a measurement line; and a distribution direction of the noise measurement electrodes is orthogonal with the direction of the measurement line. According to the electromagnetic detection noise measurement system and the noise reduction method, the noise measurement electrodes are respectively arranged between two adjacent receiving electrodes, the transmitting electrode and the receiving electrodes are disposed in the same direction of the measurement line, and the distribution direction of the noise measurement electrodes is orthogonal with the direction of the measurement line, so that the signal received by a receiving end can be effectively acquired, a background noise signal of the receiving end can also be acquired, various signals are denoised subsequently according to a preset noise reduction model, and a needed real field signal is obtained.