53results about How to "The principle is simple" patented technology

The application discloses a wind-solar-water combined short-term optimization scheduling method based on wind-solar uncertainty prediction scenes, which comprises the following steps: pre-processing and dividing levels of historical wind-solar output data; establishing a wind-solar prediction scene construction model and a reduction model to generate a wind-solar prediction typical scene set; establishing a scene migration probability calculation model to obtain the migration probability between different time periods of actual wind-solar output values; updating the prediction scene according to the wind-solar prediction typical scene set, combining the hourly wind-solar output measured data and the scene migration probability information; and performing wind-solar-water combined short-term optimization scheduling. The application is based on the prediction and measured data of historical wind-solar output, considers the influence of the uncertainty of wind-solar output on the wind-solar-water combined short-term optimization scheduling by constructing the wind-solar output prediction scene, and provides a new method and technology for the optimization scheduling of a multi-energy complementary system connected with new energy.

This invention discloses a method, apparatus, and device for simultaneous localization and mapping (SLAM) of a mobile robot. The method involves acquiring depth information, LiDAR scanning information, and odometry information of the robot's environment; performing 3D projection on sparse point cloud data to obtain 2D information of the robot's environment; performing spatiotemporal synchronization processing on the 2D information, LiDAR scanning information, and odometry information; establishing pose nodes using the spatiotemporally synchronized 2D information, LiDAR scanning information, and odometry information; performing point cloud registration on the spatiotemporally synchronized 2D information and LiDAR scanning information using an iterative nearest point method; optimizing the pose nodes in real time using a second iterative nearest point method; and drawing a map based on the optimized pose nodes and pose transformation matrix; and completing loop closure screening using a third iterative nearest point method, with the selected loops used for loop closure detection. This invention can simultaneously leverage the advantages of LiDAR and visual sensors in unknown and complex environments.

The application discloses a self-adaptive bolt fastening head, which comprises a fastening motor, a fastening rod arranged on an output shaft of the fastening motor, a fastening sleeve coaxially arranged on the fastening rod, a clamping arm hingedly arranged on the fastening sleeve, and a clamping arm sleeve arranged outside the fastening sleeve, wherein when the fastening sleeve moves axially towards the inside of the clamping arm sleeve, the clamping arm sleeve can press the outside of the clamping arm to make the first end of the clamping arm swing towards the inside, and when the fastening sleeve moves axially towards the outside of the clamping arm sleeve, the first end of the clamping arm swings towards the outside. The self-adaptive bolt fastening head has the advantages that the clamping arm can be adapted to the re-tightening operation of bolts of different specifications through the expansion and contraction of the clamping arm, the self-adaptive bolt fastening head has strong adaptability, and the self-adaptive bolt fastening head is suitable for a wide range of applications.

The application discloses a kind of high-sensitivity magnetic field detection device and method, device includes sequentially arranged in light propagation direction narrow line width tunable light source, polarized light formation module, first convex lens, second convex lens, Fabry-Perot cavity and detection calculation module, the Fabry-Perot cavity is equipped with the magneto-optical crystal that circled magnetic field coil, wherein, narrow line width tunable light source emits elliptically polarized signal light, polarized light formation module is formed into linearly polarized light of preset angle by signal light, Fabry-Perot cavity is formed with the linearly polarized light of resonance by injection, and linearly polarized light is shot from the cavity after being incident with two modes of light beam after magneto-optical crystal, detection calculation module includes connected detection unit and calculation unit, detection unit receives two modes of light beam, and calculation unit calculates the magnetic field applied to magneto-optical crystal according to the frequency difference of two modes.The application simple structure, simple operation, wide use, high sensitivity.

A target detection and tracking method and storage medium combining radar and infrared thermal imaging are disclosed. The method includes the following steps: Step S1: Acquiring millimeter-wave radar data and raw infrared thermal imaging data within a given space; Step S2: Performing imaging processing on the radar and infrared data respectively, removing background from the radar imaging results; Step S3: Performing time-dimensional registration on the infrared imaging results based on the radar refresh rate; performing CFAR detection processing on the matched results and clustering to output the target point cloud and centroid; Step S5: Using the transformation relationship between the spatial three-dimensional coordinate system and the infrared two-dimensional image coordinate system, obtaining the set of pixel positions of the target in the two-dimensional infrared thermal image; Step S6: Performing thermal feature calculation; Step S7: Outputting the target feature information. The storage medium is used to implement the above method. This invention has the advantages of simple principle, wide applicability, and high detection accuracy.

The invention discloses a programmable online kernel self-diagnosis implementation method and a storage medium. The method comprises the following steps: S1, constructing a hardware architecture; s2, test excitation and signature pre-generation; s3, software programmable configuration is carried out; the CPU sets a test mode, the number of execution SEEDs, test granularity, clock distribution and start / stop through the configuration register; s4, preparing before testing; s5, executing an online test; reading SEED from the ROM, generating excitation by a Pattern generator, loading the excitation to a kernel scan chain, capturing output, generating an MISR, and comparing the MISR with a GOLDEN MISR; s6, fault processing and a safety mechanism; and S7, recovering after testing. The storage medium is realized based on the method. The method has the advantages of simple principle, wide application range, good flexibility, high coverage rate and the like.

The present application relates to a kind of vehicle speed detection methods based on outer pole face image, belong to the field of automatic driving.The method includes: S1: periodically capture the image of the road in front of vehicle, obtain time-space distance image;S2: the curve cluster surface of the time-space distance image obtained is divided into several parts;S3: the curve corresponding to each part obtained;S4: by its analytic differential, the speed curve of each part is obtained;S5: the generation of full interval speed curve, according to the displacement of feature point, the speed of vehicle is calculated.The present application is based on the principle of visual kinematics, using the image obtained by vehicle-mounted camera and distance sensor, the speed of vehicle is calculated by observing the motion of feature point in image.Compared with the existing speed detection method based on physical sensor, the method is lower in cost, but the principle is simple, and the accuracy is also higher.The method can be used alone, can also be combined with the data of other sensors, improve detection accuracy and stability.

The application discloses a kind of FSI dynamic ranging methods based on high-order linear prediction-minimum mean square error, mainly solve the problem of slow speed of existing FSI ranging system to the distance to be measured solution, insufficient dynamic measurement capability.Solution includes: 1) construct to generate the optical frequency scanning interference ranging system required for distance solution interference signal;2) set the sweep rate of laser, so that it carries out optical frequency continuous tuning output, after interference, generates the sinusoidal interference signal that changes continuously on time domain after detection;3) the data acquisition device in FSI system carries out real-time acquisition to sinusoidal interference signal, and sample point is transmitted to measurement module;4) measurement module utilizes high-order linear prediction-minimum mean square error cascade algorithm to carry out real-time prediction to sampling data, and utilizes the interference signal frequency obtained to complete the real-time solution of distance.The application can make the distance solution speed of FSI system significantly improve, effectively improve the ranging rate.

The invention belongs to the field of oil and gas field development, and discloses a drillable and grindable high-water-content horizontal well plugging tool and a using method.The plugging tool comprises a first connector and a connecting sleeve which are connected with one end of a bridge plug body, and a second connector and a lifting sleeve which are connected with the other end of the bridge plug body; according to the plugging tool, the pressure of the inner cavity of the mandrel acts on the main piston and the auxiliary piston; the main piston drives a nut, a central pipe, a second joint, a rubber sleeve shaft and a second cone to move upwards and extrudes the lower part of the slip to move upwards; the auxiliary piston drives the taper sleeve and the first cone to move downwards to extrude the upper part of the slip to move downwards, so that the slip is expanded to anchor the sleeve and the rubber sleeve is compressed to block an upper oil layer and a lower oil layer; the plugging tool combination can be installed at a reasonable position as required according to the plugging requirement of a water outlet point of a middle-high water content horizontal well, a swabbing production layer section can be converted by lifting and lowering a pipe column at a wellhead, the requirement of two-section and three-section separated mining is met, an oil pipe does not need to be directly connected with a separated mining tool, and the reliability is improved.

The application discloses Au@PATP@Ag NRs nanomaterial and a preparation method and application thereof. The application also discloses a method for qualitatively and quantitatively detecting nicotine concentration based on surface enhanced Raman scattering technology and application thereof. The Au@PATP@Ag NRs nanoparticles are used as active base materials of SERS, and a target object is analyzed and detected by using a Raman spectrometer. According to a linear relation equation of a ratio of SERS signal intensity of different concentrations of nicotine solution to characteristic peaks of nicotine and an internal standard substance, the content of nicotine in a solution to be detected can be obtained, and the detection sensitivity of nicotine is greatly improved. The internal standard molecule is introduced into the core-shell structure, and the accuracy of quantitative detection of nicotine is improved. The application also has great application in sensitive detection of nicotine in cigarettes and environmental cigarette smoke. In addition, the application also has the advantages of simple principle, rapidness, simple pretreatment, high selectivity, high detection sensitivity and the like.

The invention relates to the technical field of low-voltage electrical product manufacturing, and discloses an interlocking structure of a bypass change-over switch, the interlocking structure comprises a drawer seat, and the bypass change-over switch and an automatic change-over switch are respectively installed on the upper layer and the lower layer in the drawer seat; rotating shaft weldment assemblies are arranged on the bypass change-over switch and the automatic change-over switch, connecting plate rivets are installed on the rotating shaft weldment assemblies, and rolling sleeves are arranged on the connecting plate rivets in a sleeving mode; an interlocking rod is installed on a side plate of the drawer base, connecting parts are arranged at the two ends of the interlocking rod, and the interlocking rod makes contact with the rolling sleeves through the connecting parts and is used for achieving the interlocking function. According to the interlocking structure of the bypass change-over switch, the interlocking structure is simplified, the interlocking control function is achieved through matching of all the matching faces on the interlocking rod and the rotating shaft weldment assembly, the complexity of the interlocking structure can be remarkably reduced, the principle is simple, reliability is high, operation and use are convenient, and the transmission process of the interlocking structure is stable; and the whole set of interlocking structure automatically runs without manual operation direction selection, so that the error rate and the personnel operation risk are reduced.

The application discloses a closed laser shock peening water confinement layer applying device, which comprises a structure closing module, an angle adjusting module and a water confinement layer applying module; the structure closing module comprises a shell and a deformation cover, the rear end of the deformation cover is fixedly installed on the shell, the opening and closing angle of the front end of the deformation cover is adjustable, the shell and the deformation cover constitute an isolated cavity which is open at the front side and has an adjustable opening and closing angle and is closed at the rear side; the angle adjusting module is installed on the shell and is used for adjusting the opening and closing angle of the deformation cover; the water confinement layer applying module comprises a water pumping pump used for conveying deionized water into the isolated cavity and a vacuum pump used for pumping the deionized water in the isolated cavity out; the application further discloses a closed laser shock peening water confinement layer applying method, which is based on the closed laser shock peening water confinement layer applying device; the whole device and method have the characteristics of simple principle, strong operability, controllable water flow, wide structure applicability and good engineering practicability.

This invention relates to a method and apparatus for suppressing synchronous oscillations in a power synchronous control converter. The method involves obtaining a first difference ΔP between a reference value of active power and a measured value of active power at the grid connection point of the power synchronous control converter; obtaining a first difference ΔQ between a reference value of reactive power and a measured value of reactive power at the grid connection point of the power synchronous control converter; limiting the synchronous frequency component of the first difference ΔP using a first band-stop filter to obtain a second difference ΔP; obtaining a reference phase of a modulation signal based on the second difference ΔP; limiting the synchronous frequency component of the first difference ΔQ using a second band-stop filter to obtain a second difference ΔQ; calculating a reference voltage amplitude of the modulation signal based on the second difference ΔQ; and generating a modulation signal for controlling the power synchronous control converter based on the reference phase and reference voltage amplitude of the modulation signal. This invention can effectively suppress synchronous oscillations during the operation of a power synchronous control converter.

The invention discloses a fault detection and classification method for an energy storage battery and a storage medium, and the method comprises the steps: completing the unsupervised anomaly detection through the normal operation data, obtaining the fault features of the abnormal data for the obtained abnormal data, and completing the classification of the features; and after the abnormity is triggered, calling a supervised classification model to give a fault type probability. A computer program used for executing the method is stored in the storage medium. The method has the advantages of simple principle, easiness in implementation, wide application range and the like.

The invention relates to a spliced mirror adjusting method and device based on equal inclination interference, belongs to the technical field of large-aperture optical mirror surfaces, and solves the problems of complex system, environment sensitivity, poor real-time performance and the like of the existing spliced mirror co-phase detection method. The method comprises the following steps: installing an adjusting device at a theoretical curvature center position of a primary mirror of the large-aperture optical system; ideal spherical waves emitted by the point light source are divided into two paths through the optical splitter, wherein one path enters the large-aperture optical system reflector and is reflected back to the optical splitter; the other path of light enters the plane mirror through the lens group and is reflected back to the optical splitter; the two paths of reflected light are subjected to equal inclination interference at the optical splitter; and after the number of the equal-inclination interference fringes is extracted through the detection terminal, the position of each splicing mirror in the primary mirror of the large-aperture optical system is adjusted until the number of the equal-inclination interference fringes is minimum. The device is simple in principle, compact in structure and high in environment robustness, and a reliable means is provided for rapid and high-precision real-time co-phase adjustment of the spliced mirror.

This invention provides a method and apparatus for calculating the theoretical power generation of a photovoltaic (PV) power plant based on a sample inverter. The method includes: pre-classifying all inverters in the PV power plant according to their models to determine sample inverters for each model; establishing a linear regression model of the theoretical power generation of the PV power plant varying with the output of the sample inverters, and obtaining the coefficient matrix of the regression model using the least squares method; solving for the correlation coefficients in the coefficient matrix based on the historical output of the PV power plant and the historical output of the sample inverters to obtain a regression model with known correlation coefficients; and obtaining the current theoretical power generation of the PV power plant based on the current output of the sample inverters using the linear regression model with known correlation coefficients. This improves the accuracy of the calculation of the theoretical power generation of the PV power plant, ensures the accuracy of the calculation results for the amount of curtailed solar power during curtailment, provides accurate operational data for grid dispatch and PV development planning, and ensures the safe and stable operation of the power grid.

The invention discloses a gas pipeline leakage judgment method and a storage medium. The method comprises the steps that S1, adaptive background concentration extraction is carried out; for the data points one by one, taking the median in the sub-window as an initial background concentration value, and further correcting the background concentration by adopting the change condition of the initial background concentration in the main window to obtain a background concentration value adapted to the data points one by one; s2, judging a methane source; the methane source is judged by comprehensively considering the ratio of methane to ethane enhancement value, methane and ethane change synchronism and the ethane change condition at the methane peak value. The storage medium is realized based on the method. The method has the advantages of simple principle, wide application range, easiness in implementation, high detection precision and the like.

The application discloses a kind of symbolic memory mapping method and system, the method includes: step S1: according to memory read-write attribute configuration, initialize memory attribute judge;Step S2: according to symbolic memory configuration, initialize symbolic expression mapper;Step S3: input processor receives read operation or write operation, and memory attribute judge is according to the memory attribute judge in step S1, the legality of read-write operation is judged;For illegal operation, it is handed over to output processor to generate output;For legal operation, it is handed over to symbolic expression mapper to execute subsequent operation;Step S4: symbolic expression mapper according to read-write operation, and symbolic memory configuration in step S2, case processing symbolic memory read-write operation.The system is used to implement the above method.The application has the advantages of simple principle, wide application range, small hardware overhead, etc.

This invention relates to the field of pulsar timing technology, and more particularly to a comprehensive pulsar timing analysis method and system based on iterative filtering. The method includes combining the timing residuals of pulsars in pairs according to combination rules to form multiple master-slave groups of pulsar timing residuals, and iteratively filtering them using the Vondrak-Cepek filtering algorithm to obtain the corresponding filtered timing residuals. After each round of iterative filtering, the filtered timing residuals output from the previous round of iterative filtering are combined in pairs according to combination rules to obtain updated master-slave groups of pulsar timing residuals, which are then used as input for the next round of iterative filtering, until the total number of filtering iterations is reached, thereby obtaining the comprehensive pulsar timing stability. Compared to a single pulsar, this invention, through multiple rounds of iterative Vondrak-Cepek filtering, establishes a comprehensive pulsar timing for selected millisecond pulsars, which can simultaneously improve both short-term and long-term stability.

The utility model belongs to circuit monitoring technical field, concretely relates to a structure of monitoring on-off of grounding state, including first voltage division unit (1) that is connected in series between zero line and live wire, second voltage division unit (2) and signal acquisition unit (3), still including the test circuit (4) of one end connection between first voltage division unit (1) and second voltage division unit (2), the other end connection on the measured grounding point (5), signal acquisition unit (3) can give different signals to the ground wire on-off situation of measured grounding point (5). The utility model principle is simple and effective, cost is extremely low, only needs several elements to realize the monitoring of on and off of grounding situation, has the advantage that operation is reliable, and the fault rate is low.

This invention discloses an optimization method and system for level monitoring in drainage systems based on time-delay cross-correlation. The method preprocesses monitoring data using LSTM and a low-pass filter, generates a generalized flow direction map by combining .dwg or .shp format pipe network data, calculates flow velocity using the Manning formula, and constructs upstream and downstream time-delay correlations. Significantly correlated points are then screened using time-delay cross-correlation coefficients and permutation tests. Monitoring deployment is optimized by considering maintenance costs. The system comprises four main modules: data preprocessing, system generalization, time-delay correlation, and correlation analysis. It is adaptable to all operating conditions, including alternating rainy and dry seasons, and is computationally efficient and widely applicable. It reduces equipment redundancy and blind spots, lowers maintenance costs, and improves the intelligence level of drainage system monitoring.

The application provides a salt cave sediment breaking device and a brine discharging method suitable for multiple interlayers. The sediment breaking device comprises a production pipe, an intermediate pipe and a directional breaking device. The brine discharging method comprises the following steps: lowering the directional breaking device from the intermediate pipe into the salt cavity, starting from the sediment interface, breaking step by step in multiple directions from top to bottom, stopping breaking when the drill bit reaches the bottom of the salt cavity; taking out the directional breaking device from the intermediate pipe, lowering the intermediate pipe to the new sediment interface, discharging brine from the intermediate pipe through the gap as a gas injection channel, and injecting gas, at this time, the lower part of the salt cavity is dense sediment plus a small amount of brine, and the upper part is a gas storage clean space. The beneficial effects of the application are that the sediment is broken and stirred to reduce the sediment gap space as much as possible, so as to solve the problems of large sediment space proportion of the multiple interlayer salt cavity, difficult brine discharge and small available space of the salt cavity.

The present application belongs to the field of image processing and computer vision technology, and particularly relates to a sea-sky line real-time detection method and system. The present application divides the sea-sky line detection into two parts of coarse calculation and precise calculation. The first part is coarse calculation, the method of which is to down-sample and calculate a longitudinal gray gradient graph for the collected visible light or infrared image, to carry out threshold segmentation on the longitudinal gray gradient graph to obtain a binary image, to calculate the boundary of the binary image, and to calculate the approximate intercept and slope of the sea-sky line through hough transformation. The second part is precise calculation, the method of which is to search for the maximum value position of the image longitudinal gray gradient graph in the sea-sky line vicinity area of the longitudinal gray gradient graph calculated in the first part according to the sea-sky line intercept and slope calculated in the first part, to carry out hough transformation on the obtained position points, and then to calculate the accurate position and slope of the sea-sky line. The scheme has small calculation amount, small memory occupation, simple algorithm principle and high implementation efficiency.

The application belongs to the field of petroleum drilling engineering, and particularly relates to a natural gas hydrate sample preparation-triaxial mechanical experiment device and a preparation method. The natural gas hydrate sample preparation-triaxial mechanical experiment device comprises a support, and further comprises a hydrate synthesis unit, an acoustic emission signal processing unit, an axial displacement signal processing unit, a radial displacement signal processing unit, an axial pressure servo unit, a confining pressure servo unit, a gas supply unit, an exhaust and liquid discharge unit, a temperature controller and a computer system, wherein each unit is connected to the computer system and controls the operation of each unit by the computer system. The device can provide a suitable temperature and pressure environment for hydrate generation, can synthesize natural gas hydrate samples with different saturations and different shale contents indoors, and can perform mechanical experiments. The data acquisition system is complete, the test precision is high, the device has a moderate size, does not need to be additionally installed in a cold storage, is convenient for single-person operation, and has the characteristics of simple principle and convenient operation.

This invention provides an automated monitoring method for vegetation change in open-pit mining areas based on long-term time-series remote sensing data, belonging to the field of remote sensing and geographic information technology. The method includes the following steps: S1. Data acquisition and preprocessing: Acquire all data from the mining area during the study period, and obtain NDVI time-series data through cropping, NDVI calculation, maximum value synthesis, and filtering; S2. Template creation: Based on statistical analysis of the filtered NDVI time-series data, obtain the NDVI values ​​of vegetation and bare soil in the mining area, and generate NDVI templates for different vegetation change trajectory types by combining typical vegetation change patterns in open-pit mining areas; S3. Vegetation change trajectory type classification: Using the NDVI templates as training data, obtain the vegetation change trajectory type for each pixel in the mining area using a DTW-based KNN classification method; This invention can achieve a highly automated monitoring method for vegetation change in open-pit mining areas without sample training or parameter setting.

The application discloses a kind of south typical hilly terrain irrigation area crop soil moisture condition equipment layout method, comprising the following steps: obtaining south hilly terrain irrigation area remote sensing image, carry out semi-supervised classification in combination with field sampling results, interpret and form irrigation area crop structure distribution map A;According to irrigation area crop structure distribution map A, adopt field investigation and handling, form fine irrigation area crop structure distribution map B;South hilly terrain irrigation area crop is subdivided, and the distribution of each partition typical crop is counted;According to block crop planting importance order, according to primary classification, successively guarantee block crop soil moisture condition monitoring station site layout;According to soil moisture condition equipment layout distribution diagram, site location that meets layout requirement is found;Field detection station site communication signal, guarantee data transmission;The application focuses on soil moisture condition equipment layout work, forms differentiated results in the field of soil moisture condition site selection and planning, provides certain reference value for newly-built irrigation area soil moisture condition site selection.

The utility model discloses an identification PCCP (prestressed concrete cylinder pipe), which relates to the technical field of concrete prefabricated parts and comprises a PCCP frame and an integrally formed concrete chip arranged on the PCCP frame. The PCCP frame comprises a peripheral steel cylinder, a pipe core outer wall concrete layer wrapping the peripheral steel cylinder, a prestressed steel wire wound around the periphery of the pipe core outer wall concrete layer, a mortar protection layer wrapping the prestressed steel wire and a pipe core inner wall concrete layer arranged on the inner side of the peripheral steel cylinder. The integrally-formed concrete chip is arranged on a peripheral steel cylinder at the socket end of the PCCP pipe frame and / or a concrete layer on the inner wall of the pipe core; the integrally-formed concrete chip is arranged in the identification PCCP pipe, so that identification and traceability management are facilitated. The PCCP information recording device is simple in principle and obvious in effect, can be effectively suitable for PCCPs with different information recording requirements, marks and traces the PCCPs at the same time, and remarkably improves the quality management level of concrete products or structures.

The application relates to an automatic control method of a motor space heater, and belongs to the technical field of motor power distribution. The application comprises the following steps: S1, connecting a motor switching-off circuit on a main power supply circuit; S2, connecting the main power supply circuit from a power source to the motor space heater through a circuit breaker, a contactor and a cable; S3, disconnecting a motor switching-on and switching-off auxiliary contact, releasing an intermediate relay by losing power, closing the contact of the intermediate relay, absorbing the normally open contact of the contactor, and electrifying the motor space heater to be in a normal heating state. The application has the advantages of simple principle, low cost, low energy consumption, convenient operation, and great safety hidden danger of avoiding the motor insulation being lower than the standard value, and the motor being easily damaged by a serious electrical accident when being started again.

The utility model discloses a wooden packing box surface polishing equipment relates to wooden packing box processing technical field, including the bottom plate, its top fixed connection has the guide component, and the bottom plate on the one side of guide component places the box body, and the bottom plate on the other side of guide component fixedly has the support frame, and the top of in support frame hoists has the positioning assembly, and the top of guide component is equipped with the polishing assembly, the positioning assembly includes the positioning part, and the top of in support frame hoists is used for the positioning part of positioning box body, the polishing assembly includes installation shell no.