136results about How to "Reliable conclusion" patented technology

A method for detecting defects in three-dimensional articles. Providing a model of said article. Providing a first powder layer on a substrate, directing an energy beam over said substrate causing said first powder layer to fuse in selected locations forming a first cross section of said three-dimensional article, providing a second powder layer on said substrate, directing the energy beam over said substrate causing said second powder layer to fuse in selected locations to form a second cross section of said three-dimensional article. A first and second image of a first and second fusion zone of said first powder layer respectively is captured. Comparing said first and second images with corresponding layers in said model. Detecting a defect in the three-dimensional article if a deviation in said first image with respect to said model is at least partially overlapping a deviation in said second image with respect to said model.

A method and a system for radar-based gauging of a filling level of a filling material is disclosed, wherein the tank has at least one interfering structure. The method comprises: transmitting at a first time moment a microwave signal towards the surface of the filling material; receiving microwave signals as reflected against the surface of the filling material and as reflected against said at least one interfering structure; calculating based on propagation times of the transmitted and reflected microwave signals at least two distances to reflective surfaces in the tank; and repeating at a second time moment the transmitting, the detecting and the calculating, wherein said first time moment is timely separated from said second time moment. Based on the several repeated measurements, the distance to the surface of the filling material is determiend as the calculated distance that exhibits the greatest change between said first and second time moments. Based on this time difference analysis, it is possible to discinguish moving surfaces very easy and acurate. The method is specifically advantageous in overfill or high level alarm systems.

A laser scanner which operates pursuant to the elapsed time principle and which has a pulsed laser that directs successive light pulses into a monitored region. The laser scanner further has a light receiving arrangement for receiving light pulses reflected by an object in the monitored region and that generates electric received signals which are fed to an evaluation unit for determining a distance between the object and the laser scanner based on the elapsed time between the emission of the light pulse and the receipt of the reflected pulse and the speed of light from which a distance signal is formed that is representative of the distance between the object and the scanner. There is a light diverter unit between the pulsed laser and the monitored region which continuously directs light pulses along different directions into the monitored region. A light source is provided which emits a light measuring signal of reduced strength which is also continuously directed into the monitored region in continuously changing directions. The light receiving arrangement is configured to receive the light measuring signal reflected by the object in the monitored region and to generate a reflection signal that is representative of the reflection characteristics of the object. The light pulses and the receiving signals are changeable in dependency of the reflection signal.

The invention discloses a friction load coupling experimental device and a friction load coupling experimental method in a marine climate environment. The experimental device comprises an electric control part, a mechanical part and a constant temperature and humidity maintaining system, wherein the electric control part comprises a motor servo control and data collection system; the mechanical part comprises an upper main shaft driving assembly, a lower sample motion assembly, a lower main shaft pressure and torque measuring assembly, a spring loading assembly and a special friction pair fixture assembly; the constant temperature and humidity maintaining system mainly consists of an industrial air conditioner and a case. According to the experimental device and the experimental method, the corrosion and wear resistance of materials or coating materials in wet and hot marine atmosphere environment can be truly represented; accurate and reliable experimental evidences can be provided for design and material selection of devices and machines used in the marine climate environment, so as to improve the performances of the devices and the machines and prolong the service lives of the devices and the machine.

A method and a system for radar-based gauging of a filling level of a filling material is disclosed, wherein the tank has at least one interfering structure. The method comprises: transmitting at a first time moment a microwave signal towards the surface of the filling material; receiving microwave signals as reflected against the surface of the filling material and as reflected against said at least one interfering structure; calculating based on propagation times of the transmitted and reflected microwave signals at least two distances to reflective surfaces in the tank; and repeating at a second time moment the transmitting, the detecting and the calculating, wherein said first time moment is timely separated from said second time moment. Based on the several repeated measurements, the distance to the surface of the filling material is determined as the calculated distance that exhibits the greatest change between said first and second time moments. Based on this time difference analysis, it is possible to discinguish moving surfaces very easy and acurate. The method is specifically advantageous in overfill or high level alarm systems.

The invention discloses a real-time online diagnosis method of a coupling parallel misalignment fault, belongs to the fields of mechanical vibration state monitoring and fault diagnosis, and relates to the real-time online monitoring of the vibration state of the large steam turbine generator set. The method comprises the following steps: acquiring vibration signals of shafts on two sides of a coupling of the steam turbine generator set and temperature data of bearing bushes of bearing pedestals on two sides of the coupling; judging in real time whether the temperature of the bearing bushes of the bearing pedestals on the two sides of the coupling of the set is abnormal, and combining the Fast Fourier Transform (FFT) spectrum analysis method to perform shaft speed frequency vibration phase condition verification on the relative vibration data of the shafts on the two sides of the coupling; and automatically diagnosing in real time whether the coupling parallel misalignment fault occurs in the set based on real-time quantitative computation and analysis and in conjunction with various verification results in an online manner. The method has the advantages of scientificness, reliable conclusion, automatic realization of the real-time online monitoring and the fault diagnosis and the like.

The invention discloses a flow-excitation failure real-time diagnosis method used for a large-scale steam-turbine generator unit, belonging to the vibration-state real-time on-line automatic detection for the large-scale steam-turbine generator unit in the mechanical vibration-state detection and failure diagnosis field. The failure diagnosis method comprises the sections of data collection, data preprocessing, low-frequency vibration condition verification, unit load condition verification and failure diagnosis and the like. Whether the unit suffers the flow-excitation failure is diagnosed according to the results of low-frequency vibration condition verification and unit load condition verification. The method has the advantages that the diagnosis is reliable; and the automatic real-time on-line detection and failure diagnosis can be realized and the like.

A method carries out a brake test on trailer vehicles and / or semitrailer vehicles. The method a) senses a semitrailer (2) or trailer which has been newly hitched to the towing vehicle (1), b) initializes an on-board brake test for the semitrailer brake system or trailer brake system (5), c) initiates at least one defined braking process by the semitrailer brake system (5) or trailer brake system after a defined distance has been traveled, and d) senses and determines the braking effect of the at least one defined braking process as a braking effect actual value which is compared with a braking effect setpoint value which is present, and e) an information signal is output which takes into account the evaluation result of the step d).

The invention aims at providing a method for testing the property of a high-accuracy fiber-optic gyro on the basis of the dynamic condition of an incremental method. The method comprises the following steps of calibrating the fiber-optic gyro under a static condition, and determining a scale factor, an installation error angle and a zero correction value; installing the fiber-optic gyro on a rotating table, rotating the fiber-optic gyro towards the sky so as to enable the Z shaft of the fiber-optic gyro to be perpendicular to a horizontal surface, recording the output angular speed Ne of the fiber-optic gyro within time t, and calculating the output average value of the fiber-optic gyro; controlling the rotation time T of the rotating table, recording N discrete gyro output values output from the Z shaft of the fiber-optic gyro under the condition of a sampling time interval dt, and recording the rotation angle of the rotating table within time T; determining the rotation angle of the fiber-optic gyro within the time T by adding the N fiber-optic gyro output values and subtracting angular speed caused by the autorotation of the earth within the time, and comparing the rotation angle of the fiber-optic gyro with the rotation angle of the rotating table. The method provided by the invention can effectively reflect the light error of the high-accuracy fiber-optic gyro under the dynamic condition.

In a method and a device for determining a charge / aging state of an energy store, the charge / aging state is able to be determined by a control unit on the basis of an open terminal voltage of the energy store, able to be measured with the aid of a voltage-measuring sensor, in a load-free state. It is provided that the control unit initiates a measurement of a first open terminal voltage at a first instant following the occurrence of the load-free state of the energy store and, based on the measured first open terminal voltage, the control unit, with the aid of a prediction model, specifies a future instant for at least one additional measurement of the open terminal voltage, and at least one additional open terminal voltage is measured at the future instant, and the charge / aging state of the energy store is determined with the aid of the at least one additional open terminal voltage.

In a method to test a clinical and / or medical-technical system and a method for controlling medical-technical examination workflows in a clinical and / or medical-technical system, medical examination workflows in the appertaining system are simulated. For this purpose, a process workflow plan is selected from a number of process workflow plans dependent on an examination task, each of the process workflow plans including a number of linked process units with which system component of the system are respectively associated. Each process workflow plan also includes an input parameter set, an output parameter set and a transfer function that is dependent on the examination task and / or the associated system component. Respective output parameter values and / or performance data for the individual process units are then determined from a number of input parameter values for the appertaining process units on the basis of the transfer function. Respective output parameter values of a process unit are used as input parameter values for a subsequent process unit within the process workflow plan.

The invention discloses a concrete continuity monitoring based pile foundation quality discrimination method. The concrete continuity monitoring based pile foundation quality discrimination method and monitor comprises the steps of arranging more than two pressure sensors at the bottom of a feeding guide pipe along the vertical height direction to serve as a group of monitors; collecting data on every pressure sensor and calculating the casting medium density Rho between every two pressure sensors; judging whether the concrete in the axial direction is continuous and complete or not after being solidified according to the continuity and the stability of a Rho value. The invention also discloses the monitors. The monitors comprise the plurality of pressure sensors which are separately distributed in the vertical direction and connected with a power supply, a data collector and a data integration processing and output module through a sealing circuit. According to the concrete continuity monitoring based pile foundation quality discrimination method and the monitors, the use is simple and convenient, the conclusion is reliable, a large amount of steel can be saved, and the labor, the time and the cost are saved.

The invention discloses a measurement system based on a machine-intelligence-prediction multi-parameter fiber sensor. The system is composed of a distributed fiber temperature sensing system, a distributed fiber vibration sensing system, a distributed fiber strain sensing system and a cloud platform. A signal input terminal of the cloud platform is connected with signal output terminals of the distributed fiber temperature sensing system, the distributed fiber vibration sensing system, and the distributed fiber strain sensing system. The cloud platform includes a cloud memory and a cloud calculator. In addition, the invention also discloses a machine intelligence prediction method based on multi-parameter measurement fiber sensing.

A method for a vehicle equipped with a surroundings sensor system for generating an evaluation signal representing the trafficability of at least one route section to be traveled by the vehicle, the evaluation signal being ascertained as a function of surroundings data which are gathered with the aid of the surroundings sensor system, the evaluation signal being further ascertained as a function of at least one piece of surroundings information from an elevation map representing the topology of the at least one route section and / or at least one movement value of the vehicle representing a pitch and / or roll angle.

A laser scanner which operates pursuant to the elapsed time principle and which has a pulsed laser that directs successive light pulses into a monitored region. The laser scanner further has a light receiving arrangement for receiving light pulses reflected by an object in the monitored region and that generates electric received signals which are fed to an evaluation unit for determining a distance between the object and the laser scanner based on the elapsed time between the emission of the light pulse and the receipt of the reflected pulse and the speed of light from which a distance signal is formed that is representative of the distance between the object and the scanner. There is a light diverter unit between the pulsed laser and the monitored region which continuously directs light pulses along different directions into the monitored region. A light source is provided which emits a light measuring signal of reduced strength which is also continuously directed into the monitored region in continuously changing directions. The light receiving arrangement is configured to receive the light measuring signal reflected by the object in the monitored region and to generate a reflection signal that is representative of the reflection characteristics of the object. The light pulses and the receiving signals are changeable in dependency of the reflection signal.

The invention discloses a measuring method for the thickness of an extremely-thin covering layer, comprising the following steps of: sampling in a way of being obliquely crossed with a covering layer on a metallographic specimen, and measuring the thickness value of the specimen through a microspore according to Measuring Methods for Thickness of Metal and Oxide Coating by Microscopical Examination specified in the GB6462-86 standard, wherein a manufacturing method of a specimen matrix comprises the following steps of: intercepting a specimen along an intercepting surface vertical to the covering layer to obtain a section as a detected surface, and measuring the thickness value a of the detected surface; and intercepting a detection amplifying surface on a surface obliquely crossed with the surface of the covering layer to form an included angle alpha, and measuring the thickness value b of the detection amplifying surface; and finally, obtaining a measured value delta=bsinalpha.

The invention discloses a method for detecting the pollution toxicity of soil by adopting electric signals of a double-chamber microbial fuel cell and belongs to the technical field of detection of soil pollution. According to the method, electric quantity generated by decomposing organic matters through soil microorganisms is used as an index for detecting the pollution toxicity of the soil; compared with a traditional method for detecting the toxicity by microorganism activity, biomass and the like, the method has the advantages of low cost, easiness in operation and short detection period. The double-chamber microbial fuel cell used in the method comprises an anode, a cathode, an anode fixing groove, a cathode fixing groove, an anode chamber, a cathode chamber, a top cover of the anode chamber, a top cover of the cathode chamber, a diaphragm, a rubber cushion, a lead wire, a load, bolts and nuts. Before the double-chamber microbial fuel cell is operated, polluted soil and glucose are mixed and are added into the anode chamber; a potassium ferricyanide solution is introduced into the cathode chamber to be used as an electron acceptor; after the double-chamber microbial fuel cell is operated for 48 hours, the generated electric quantity in the 48 hours is calculated and is used for evaluating the toxicity of pollutants. The method for detecting the pollution toxicity of the soil by adopting the electric signals of the double-chamber microbial fuel cell has high scientific values and application values.

The invention discloses a resting-state functional magnetic resonance data processing method based on primary epilepsy, which belongs to the technical field of data processing for disease detection, and comprises the following steps: S1. data collection; S2. data preprocessing; S3 .Data analysis: including ReHo data analysis, ALFF data analysis and FC data analysis, all ReHo, ALFF, FC maps are analyzed separately, and then aggregated to determine the changed brain regions. The data processing method of the present invention is extremely valuable for the exploration of multifocal epileptic lesions, avoids the difference in brain activity caused by complex task stimuli, and basically controls the experimental conditions of different subjects at the same level, and is easy to cooperate and more It is easy to draw reliable conclusions. It understands the pathogenesis of certain clinical symptoms of epileptic patients from the perspective of brain function, can help locate epileptic foci and surrounding functional areas, and guide epilepsy surgery and the resection range of epileptic foci.

The invention discloses a double-probe same-point measurement scanning probe microscopy which uses an XY or XYZ piezoelectric scanner, and an XY or XYZ piezoelectric scanner which has an enhanced X location range or is additionally provided with XY inertia stepping to deliver a sample measuring point from a first probe to vicinity of a second probe, and realize re-measurement of the second probe to a first probe measurement point by looking for marks. Two independent Z-shaped localizers are used for adjusting the distance between the two probes and the sample, which causes each probe to not interfere the measurement of the other probe. Compared with the same-point measurement technologies of the existing mobile probes, the design is not provided with a degree of long-range freedom, the distance between the two probes is allowed to be longer, and different probes are also allowable, therefore, the control and the fabrication are greatly simplified, and given data are more comprehensive, reliable, significance is wider and deeper, and the scanning probe microscopy is especially suitable for the studies of phase change, reaction kinetics and interdiscipline.

The invention discloses a mechanical test instrument for surfaces of soil and a structure. The mechanical test instrument comprises a bracket, a control switch arranged on the bracket, a lifting mechanism fixed on the bottom plate of the bracket, a force measurement ring pressed at the top of the lifting mechanism, a container fixed at the top plate of the bracket, a lever pressed at the upper part of the container through a pressure transmission screw, a balance weight fixed at the rear end of the lever through a balance rod, and a weight hung at the front end of the lever. A strain measurement system is connected with a push rod in the container. According to the mechanical test instrument, the contact area of the soil and the structure within a measurement range in a test process can be guaranteed to be constant; the strain measurement system is used for measuring deformations of strain pieces in a strain piece group, so that real normal stress and shear stress on the interface of the soil and the cylindrical structure can be measured.

The invention discloses a water leakage detection mechanism. The water leakage detection mechanism is characterized by comprising a frequency detection probe and a single-detection probe. The frequency detection probe is fixed to a matching position of a power shaft of a water pump and a pump body and provided with an exposed water contact surface, and a frequency detection electrode is arranged on the water contact surface; the single-detection probe is fixed below the matching position of the power shaft of the water pump and the pump body and in a water dropping track and provided with a water containing box with an upward opening, and the water containing box is provided with a water containing space for collecting dropping and leaking water; a single-detection electrode used for detecting leaking water in an electric conduction method is arranged in the water containing space; the frequency detection electrode is connected with a frequency detection module; the single-detection electrode is connected with a single-detection module; both the frequency detection module and the single-detection module are located in a control module which can control a driving component where the power shaft is located. According to the water leakage detection mechanism, water leakage detection conclusions of the water pump can be more accurate and reliable due to the combination of the single-detection module and the frequency detection module; water leakage conditions of the centrifugal water pump can be accurately detected and the water leakage detection conclusions are accurate and reliable because the single-detection electrode and the frequency detection electrode are matched with the single-detection module and the frequency detection module which are suitable for the single-detection electrode and the frequency detection electrode.

The invention belongs to the field of agricultural aviation crop protection and relates to an automatic profile-modeling spraying device and angle adjustment method of an agricultural aviation crop protection machine. The automatic profile-modeling spraying device and the angle adjustment method aim at solving the problem that crops are in gradient type inclined distribution due to biological contour characteristics of inclination of a crop crown and the terrain, and a machine body is inclined when turning, so that spraying is not conducted uniformly. By means of the automatic spray boom angle adjustment method of the aviation crop protection machine, a mathematic model with the inclination angle of the machine body equal to the reverse deflection angle of adjustment of a spray boom or with included angle between the surface of a profile-modeling crop and the ground equal to the reverse deflection angle of adjustment of the spray boom is established, and the angle of the spray boom is adjusted automatically through the model, so that the automatic profile-modeling spraying device achieves the effects of conducting profile-modeling on the contour of the crop crown and improving spraying uniformity. By detecting such factors as biological characteristics, geographical factors and machine body inclination, spray boom angle adjustment applicable to the complex environmental condition is instructed to be designed, the effects of applying less pesticide and applying pesticide better are achieved, spraying uniformity is improved, the coverage rate is raised, and the utilization rate of pesticide is raised.

The invention provides a seismic assessment method of a bridge under the near fault ground motion. Whether the selected bridge type meets the requirements can be rapidly assessed, design time of primary type selection can be saved, seismic analysis and assessment of the bridge can be rapidly performed, the complex process of generating artificial seismic waves carrying the near fault characteristics by using finite elements to perform time procedure analysis can be effectively avoided without artificial generation of seismic waves, and the conformed index value of the bridge site is directly substituted to a probabilistic seismic demand model to perform simplified calculation. Besides, multiple positively correlated ground motion parameters are adopted for solution and then the comparisonresult proves that the result is reliable and effective, the accuracy is higher, the seismic performance of the bridge can be enhanced, the characteristic of constant length periodic structure of thebridge can be further met, and the method is further suitable for bridge seismic design under the near fault pulse-like ground motion, widely suitable for seismic analysis and assessment of all the components of the near fault bridge structure and rapid verification of other design methods and favorable for enhancing the accuracy of bridge seismic design analysis.

The invention discloses a method for studying a populus diversifolia gene by using a multi-reference-gene combination. The method comprises the following steps: (1) extracting total RNA of populus diversifolia, and reversely transcribing total RNA into cDNA as a template of PCR; (2) designing a specific primer to react on a real-time fluorescent quantitative PCR instrument through an SYBR Green method by using not less than 9 reference genes to obtain a CT value; (3) determining the number of reference genes by taking 0.15 as a threshold value through a formula and a PV value calculation function of geNorm software; (4) selecting the reference genes according to the required number, performing qRT-PCR reaction together with a target gene, and calculating the obtained CT value through the geNorm software to obtain change data of the target gene in a process of obtaining relative expression quantity by using the multi-reference-gene combination in each treatment. Compared with a conventional one-reference-gene method, the method has the characteristic that a relatively reliable conclusion can be obtained.

The invention discloses a reference gene screening method for stable expression of suaeda salsa under salt stress. According to transcriptome analysis results obtained in a laboratory and reported reference gene sequence information of other plants, fourteen reference gene candidates with relatively stable expression are preliminarily screened and named as ACT7, ACT1, CCD1, TUA5, UPL1, UBC28, EF1alpha, PP2A, DREB1D, TIM, V-H(+)-ATPase, MPK6, PHT4:5 and CESA1 respectively. For these gene candidates, corresponding amplification primers are designed and reference gene screening is conducted. Tengenes stably expressed in a gene expression profile of suaeda salsa are screened out as the reference genes of suaeda salsa under salt stress, and the stability and reliability of suaeda salsa gene expression analysis and research under salt stress conditions are easily improved. The method makes up for the defect of an existing method in which the use of a single reference gene can lead to errorsand deviations in experimental results, a more reliable conclusion can be obtained, and the method is of great significance for promoting the improvement and perfecting of molecular biological methods and revealing cell differentiation, development and morphogenesis.

The invention relates to an extra-high voltage direct-current restart simulation optimization method. The method includes the following steps that: extra-high voltage direct-current mono-polar line fault restart actual measurement data are obtained, direct-current mono-polar fault line restart parameters and post-fault alternating current system key weak cross section response condition are determined; extra-high voltage direct-current mono-polar fault line restart is simulated based on the direct-current mono-polar fault line restart parameters, and post-fault alternating current system key weak cross section response condition after simulation is determined; whether the error value of a simulation results is larger than an error result minimum value is judged; and an extra-high voltage direct-current bipolar fault line restart time sequence is determined based on an extra-high voltage direct-current mono-polar fault line optimal restart time sequence. With the method adopted, the impact characteristic of the restart time sequence after an extra-high voltage direct-current fault, and extra-high voltage direct-current mono-polar / bipolar restart on an alternating current system can be accurately simulated. The extra-high voltage direct-current restart simulation optimization method has the advantages of simple and accurate calculation process and accurate results, and can be applied to the formulation of extra-high voltage direct-current mono-polar / bipolar restart strategies and safety and stability analysis of an alternating current / direct current hybrid power grid system.

Method for spectral evaluation of oscillation signals which have been obtained on a rotor blade of a wind power installation with an accelerations sensor. In doing so, instead of the otherwise conventional Fourier transform calculation, the spectral power density is computed. In the evaluation, also signal portions are considered which are not detected in the Fourier transform because they do not go back to oscillations which have been excited in the rotor blade.

The invention relates to a frictionless inertia step scanner, which is characterized in that an expander pulls a sheet to a base, one end of a XYZ piezoelectric scanning tube is fixed on the base while another end supports the sheet and generates pressure. When in use, the invention adds a Z extension signal and a slow XY signal, quickly evacuates the two signals to process the XY evacuation in the Z retraction and use the Z-axis inertia force of the sheet to eliminate the XY-axis friction force, repeats and generates XY-axis step without friction interference. The invention has high large-scale step positioning precision and small-scale scanning and positioning functions, which leads in two independent Z-axis positioning devices to adjust the distance between two probes and sample, uses frictionless inertia step scanning device to accurately feed the test point of the first probe on the sample into the scanning range of the second probe, to realize one-point scanning dual-probe microscope, with complete, reliable and effective data.