16results about How to "Avoid error effects" patented technology

The invention discloses a system load balancing method and system based on network connection regular detection. The method comprises the following steps: (1) acquiring actual service load pressure as a distribution index; (2) obtaining the number of connection unit instances in the target cluster, setting a historical load coefficient and a real-time load coefficient, and setting a priority adjustment period; (3) calculating a historical priority; (4) calculating a real-time priority; (5) calculating a comprehensive priority and carrying out distribution connection; (6) repeating the step (3) to the step (5) until the service load level is relatively balanced among the instances; according to the invention, dynamic load balancing of the business pressure between the service instances of the connection units is realized.

The invention discloses an ionosphere time delay monitoring and time synchronization system, method and application, and relates to the technical field of space. The method comprises the following steps: a second device broadcasts at least one path of uplink signal to a first device, and the first device forwards at least two paths of downlink signals based on the at least one path of uplink signal; the second equipment acquires at least one path of pseudo-range ranging signal broadcasted by the first equipment, and synchronously measures to obtain at least one pseudo-range ranging value and at least two forwarding ranging values; representing a pseudo-range ranging value by using a pseudo-range ranging expression and representing a forwarding ranging value by using a forwarding ranging expression; and based on the pseudo-range ranging value represented by the pseudo-range ranging expression and the forwarding ranging value represented by the forwarding ranging expression, determining the total electron number of the ionized layer on the ranging signal path between the first device and the second device, determining the clock difference between the first device and the second device, and determining the spatial distance value between the first device and the second device.

The invention discloses a high-precision time synchronization system and method and application thereof, and belongs to the technical field of time synchronization. In the application, based on a communication result with a first device, at least one path of pseudo-range ranging signal and at least one downlink signal are acquired; determining a pseudo-range ranging value based on the pseudo-range ranging signal; a forwarding ranging value is determined based on forwarding ranging signals and represented by a forwarding ranging expression, and the forwarding ranging signals comprise at least one uplink signal broadcasted to the first device and at least one downlink signal forwarded by the first device; and determining a clock difference between the first device and the second device based on the forwarding ranging value, the pseudo-range ranging value and a preset carrier frequency relationship.

The embodiment of the invention belongs to the technical field of gas concentration measurement, and relates to a target gas concentration change measuring device which comprises a gas supply module, a gas sensor, a gas flow interface, a pressure sensor and a main control processing module, the gas supply module and the gas sensor are communicated with the gas flow interface through a gas path; the main control processing module is used for controlling the gas supply module to output a test gas with a first pressure to the gas flow interface, wherein the test gas contains a target gas component with a first concentration; detecting the concentration of the gas flow output from the gas flow interface through a gas sensor to obtain the actually measured concentration, and detecting the pressure of the gas flow flowing through the gas sensor through a pressure sensor to obtain the gas path pressure; according to the ratio of the first pressure to the gas path pressure, correcting the actually measured concentration into a second concentration under the first pressure; and determining the concentration variation of the target gas according to the first concentration and the second concentration. Therefore, the concentration variation of the target gas in the whole test process can be measured more accurately.

The application discloses a kind of based on satellite data's sensible heat latent heat influence under photovoltaic power prediction model's construction method, by obtaining photovoltaic field station's stationary satellite band and era5 meteorological assimilation data and carry out space-time alignment processing, calculate surface net radiation flux and surface soil heat flux, latent heat flux is calculated in combination with sensible heat flux, construct sensible heat flux and latent heat flux training set, carry out sensible heat flux and latent heat flux time series analysis by multiscale diffusion prediction network, output sensible heat flux and the short-term forecast data of latent heat flux, obtain historical near weather data and physical constraint data, jointly short-term forecast data carries out photovoltaic power prediction, constructs photovoltaic power prediction model, obtains the actual photovoltaic power measurement value of photovoltaic field station, combined with photovoltaic power prediction result carries out prediction accuracy evaluation to photovoltaic power prediction model, carries out model optimization based on evaluation result. With the effect of improving photovoltaic field station to respond to atmospheric sensible heat latent heat under photovoltaic power prediction ability.

The invention provides an electronic component S parameter general test method, which comprises the steps of instrument connection, network analyzer setting, network analyzer calibration, test fixture calibration (de-embedding), DUT test and the like, and can overcome various influences in the S parameter test process, including the influence of network analyzer system errors, the influence of fixtures and the like. Therefore, the S parameter of the electronic component can be accurately measured.

The present application belongs to the technical field of acupuncture treatment equipment, and discloses a positioning guidance system for facial acupuncture. A positioning guidance system for facial acupuncture includes: a diagnosis and treatment information acquisition module, which acquires the patient's treatment prescription and obtains the facial acupuncture points that the patient needs to receive acupuncture; an image information acquisition module, which acquires the facial image of the patient before acupuncture; an acupuncture point positioning module, which compares the facial image of the patient before acupuncture with the facial image with acupuncture points marked in the database, and obtains the position information of the facial acupuncture points that the patient needs to receive acupuncture; an acupuncture point marking module, which acquires the position information of the facial acupuncture points that the patient needs to receive acupuncture, and then sequentially irradiates the rays that can generate light spots on the patient's face to the facial acupuncture points to guide acupuncture treatment. The technical solution provided by the present application ensures that the corresponding acupuncture points can be accurately received during acupuncture, thereby enhancing the treatment effect.

The tunnel clearance convergence measurement method described in the present invention is applied to the measurement and calculation of the convergence displacement of the tunnel structure when the tunnel support structure or the surrounding rock and soil body is offset, so as to effectively solve the purpose of accurate measurement and calculation after the rock and soil body is offset, and realize the high-precision requirement of tunnel clearance convergence measurement. The tunnel clearance convergence measurement method sets up a total station at an observation point, and uses the total station to measure the distance a1 from the total station to the left clearance convergence point and the distance a2 from the total station to the right clearance convergence point, the angle α1 of the rear sight point-total station eyepiece-left clearance convergence point, and the angle α2 of the rear sight point-total station eyepiece-right clearance convergence point; uses a laser rangefinder to measure the height c of the total station, the distance b1 from the observation point to the left clearance convergence point, and the distance b2 from the observation point to the left clearance convergence point; obtains the clearance convergence value l after vertical and horizontal correction through observation, and the clearance convergence value l after correction minus the clearance convergence initial value l0 is the cumulative change of tunnel clearance convergence.

The invention relates to the technical field of water pump impeller wear measurement, in particular to a metal mine water pump impeller wear measurement device and method, and the device comprises an equipment seat, the equipment seat is provided with surface roughness measurement equipment, the equipment seat is internally provided with a placement seat in a sliding fit manner, and the water pump impeller is placed on the placement seat. A fixing frame is fixedly arranged in the equipment base in a connected mode, a coating treatment mechanism is arranged on the fixing frame in a sliding fit mode, a transmission mechanism is rotatably arranged in the equipment base in a connected mode, and solvent treatment bases are fixedly arranged on the inner wall and the outer wall of the equipment base in a connected mode. The coating on the surface of the water pump impeller is softened, so that the coating on the surface of the water pump impeller can be removed by utilizing the brush plate which moves back and forth, an exposed metal surface can be ensured to be measured, the measured data are more representative, and the error influence of the coating is avoided.

This utility model discloses an assembly structure for a plate-tube evaporator, including a plate-tube evaporator assembly, a cabinet assembly, and a fixing assembly. The plate-tube evaporator assembly consists of pipes and an aluminum plate, with the aluminum plate securing the pipes via pipe clips. The inner side of the cabinet assembly has a groove extending along the inner wall of the cabinet to accommodate the edge portion of the aluminum plate. The fixing assembly includes symmetrically arranged aluminum clips with positioning structures that engage with the corners of the aluminum plate, achieving lateral and longitudinal positioning and fixing of the plate-tube evaporator assembly by inserting into the groove. Preferably, the pipes can be made of copper or aluminum and connected to the aluminum plate via a thermally conductive adhesive layer; the pipe clips can be integrally stamped from an aluminum plate or made of plastic; the width of the groove forms an interference fit with the aluminum plate to enhance the fixing effect; the aluminum clips have anti-slip textures to improve fixing reliability. This utility model improves the assembly stability and production operability of the evaporator and is applicable to various types of plate-tube evaporator refrigerators.

The invention provides an automatic detection method and device for cerebral cortex micro-infarction (CMIs). According to the method and the device, the CMIs of a patient are intelligently identified and judged by using an artificial intelligence (AI) model in combination with a clinical diagnosis standard of the CMIs, and the method and the device aim at eliminating errors and low efficiency possibly caused by subjective judgment of a doctor, so that rapid, objective and accurate evaluation of the CMIs is realized. According to the method, on the basis of a magnetic resonance (MRI) image, cerebral cortex signal characteristics of a patient under a T1 sequence, a liquid attenuation inversion recovery (FLAIR) sequence and a double inversion recovery (DIR) sequence are intelligently analyzed through an AI model, rapid clinical diagnosis support can be provided for doctors, dependence on professional skills and clinical experience is reduced, the diagnosis efficiency of CMIs is remarkably improved, and the diagnosis accuracy of the CMIs is improved. The related research progress and clinical application are accelerated.

The present invention relates to a low-contrast action distance test device and method, wherein the device includes a test target source, an image acquisition processing component, a test model library construction module, an analysis module and a test module, which realizes the function of automatically detecting the resolution ability of a television camera system for low-contrast targets under different illuminations, and accurately evaluates the action distance of the television camera system under different atmospheric visibility. Compared with the prior art, the present invention is not restricted by the external environment, avoids the influence of errors caused by human subjective judgment, is simple and convenient to operate, has strong versatility, and has high test accuracy, and can effectively measure the action distance of the television camera system for low-contrast targets.

The invention provides a collaborative assembly method based on point cloud registration, a medium and equipment, and the method comprises the steps: determining a calibration point cloud and a calibration placement pose of a mounting plate, a calibration surface point cloud and a calibration grabbing pose of a to-be-mounted part, and a calibration bottom point cloud and a calibration mounting pose of the to-be-mounted part; obtaining a first installation correction pose according to the calibration point cloud of the installation plate and the current point cloud of the installation plate, obtaining a corrected actual grabbing pose according to the calibration surface point cloud of the to-be-installed part and the current point cloud of the to-be-installed part, grabbing the to-be-installed part according to the actual grabbing pose, and obtaining a bottom scene point cloud of the to-be-installed part in a grabbing scene, and correcting the calibrated installation pose according to the bottom scene point cloud and the calibrated bottom point cloud to obtain a second installation correction pose, and integrating the first installation correction pose and the second installation correction pose to obtain a final installation pose of the to-be-installed part. The problems of low assembly precision, poor adaptability and the like in the prior art are solved.

The present invention relates to an integrated device for concrete curing and early-age strength testing under a laboratory simulated temperature load combination environment, which is composed of a first vertical plate, a second vertical plate, a first fixed plate, a second fixed plate, a casting base, a resistance heating plate, a semiconductor cooling plate, a temperature control system, a pressure control system, etc. The present invention uses a resistance heating plate, a semiconductor cooling plate and a pressure control system to achieve a different temperature load combination curing environment for concrete, simulating the early casting and curing state of concrete structures in actual engineering. At the same time, it can realize the integration of concrete casting and mechanical properties testing, effectively solving the error influence on the mechanical properties testing of concrete caused by objective factors such as demolding, and arranging temperature measuring points inside the concrete to obtain the temperature change law at the temperature measuring points over time, which is conducive to mastering the heat release of concrete hydration under the temperature load combination. The present invention can provide an important means for concrete testing under the temperature load combination curing environment in actual engineering.

The utility model relates to a welding jig for a tail support of an excavator. The welding jig comprises a base, the side face limiting device comprises a first side face limiting seat and a second side face limiting seat which are arranged on the two sides of the base respectively, and the rear blocking device comprises a first rear blocking plate and a second rear blocking plate which are perpendicularly arranged on the base and used for fixedly supporting a workpiece to be welded from the rear side; and the cushion block is arranged on the base and used for supporting a workpiece to be welded. According to the utility model, additional tools and clamps are not needed, the assembly and welding can be rapidly carried out, and the measurement, the line drawing and the marking are not needed, so that the working hours, the manpower and the financial resources are saved, and the yield is also ensured.

The present application relates to a kind of thin-walled cabin section class part alignment method, belong to part processing technical field, solve the problem that the precision of machining reference cannot be ensured in prior art for the part with large shape surface deformation and no machining allowance.The method comprises: taking a point on the part as zero point O, and based on the zero point O, scanning the part, establishing theoretical three-dimensional coordinate system XYZ in the three-dimensional model of the part;In three-dimensional model, construct plane ABC;Adjust the position of the part until the normal vector a of plane ABC coincides with the Z axis of theoretical three-dimensional coordinate system XYZ;In three-dimensional model, construct new plane DEP, plane FGQ;In three-dimensional model, adjust the position of plane DEP, plane FGQ, so that the included angle β and γ between the normal vector b, c of plane DEP, plane FGQ and normal vector a are 90°.Realize that under the condition that the shape of the part is deformed relatively large, the part can be aligned more accurately.