65results about How to "The test method is simple" patented technology

The invention discloses an objective quantitative evaluation method for idle noise in an automobile. The objective quantitative evaluation method comprises the steps of acquiring objective parametersand processing of subjective parameters, carrying out correlation analysis on the subjective evaluation result and the objective parameters, establishing a correlation model by using a multi-element linear regression, and obtaining an objective quantitative mathematical model of the subjective evaluation of idle speed noises. According to the method, the subjective evaluation condition of the idling noise performance of the automobile can be obtained. The objective quantitative evaluation method is a comprehensive, direct, rapid and effective testing and evaluating method. The test method applied by the method is simple, clear in idea and very high in universality, can be suitable for testing and evaluating the idle speed noise performance of various types of vehicles, and is low in cost.

A self-testing device supporting full card radio-frequency test and a using method thereof relate to the technical field of non-contact IC cards. The self-testing device comprises a full card supporting a self-testing function, a testing bench, and a testing software platform, all of which are connected together in sequence. The full card comprises an antenna network, an NFC chip, and a CPU intelligent card. The self-testing device is structurally characterized in that the NFC chip comprises a receiving unit, a transmitting unit, an antenna unit, a power unit, a phase-locked loop unit, a control unit, a memory cell, an interface unit, and an automatic test assisting unit. The receiving unit, the phase-locked loop unit, the transmitting unit and the antenna unit are connected sequentially into a loop to form a radio frequency unit. The radio frequency unit sends and receives signals according to the ISO 14443/FeliCa protocol standard. The control unit is connected with the receiving unit, the phase-locked loop unit, the transmitting unit, the automatic test assisting unit, the memory cell, the interface unit and the power unit. By adopting the self-testing device, the testing time for in-batch full card testing can be reduced. The self-testing device has characteristics of simple test and low cost.

The invention relates to a method for constructing a model for rapid and nondestructive real-time prediction of crude oil properties and an application thereof. The method comprises the following steps: constructing a crude oil correction set, and determining properties of crude oil in the correction set; acquiring a near infrared spectrum of the crude oil by utilizing a near infrared spectrometerequipped with a near-infrared transmission type optical fiber probe; preprocessing the near infrared spectrum of the crude oil obtained in the step II by utilizing a method for combining first-orderdifferential and multiplicative scatter correction; performing training set sample selection on the preprocessed spectral data by utilizing a principal component analysis method; selecting a specificspectral wave number according to to-be-tested items of the crude oil and a spectral data set of the crude oil; and constructing a mathematical correlation model between the crude oil properties and the near-infrared spectral data by utilizing a regression modeling method. Compared with the traditional rapid crude oil measurement method, the method disclosed by the invention does not need complicated sample pretreatment, is simple in operation, rapid, nondestructive, high in signal-to-noise ratio of the near infrared spectrum and high in precision of quantitative analysis models and is particularly applicable to industrial online real-time prediction of multiple attribute values of the crude oil.

An equivalent method for on-board initiating explosive device explosion shock spectra includes the steps: (1) acquiring on-board equipment initiating explosive device explosion shock time domain acceleration spectrum values and converting the spectrum values into shock response spectra; (2) acquiring vibration displacement for obtaining different frequency points by the aid of the shock response spectra; (3) accumulating and summing the vibration displacement of each frequency point; (4) acquiring displacement cumulative sum of the ground universal shock response spectra according to on-board applied shock acceleration spectrum values in satellite universal ground impact test and according to the steps (2) and (3); (5) determining the displacement ratio of the shock response spectra of on-board equipment to ground universal shock response spectrum conditions according to the steps (3) and (4); (6) acquiring the shock response spectra equivalent to on-board equipment initiating explosive device explosion shock by the aid of the obtained ratio and universal shock response spectra of on-board equipment ground impact tests.

The invention discloses a device and a method used for testing the flame height of lithium battery combustion. The device comprises a test box, a heating device, a camera and a smoke evacuating device. An air inlet is arranged in a corner at the bottom of the test box. An air outlet is arranged in a corner at the top of the test box. Anemometers are arranged at the air inlet and the air outlet. The camera is arranged outside a test room and a lens faces a lithium battery. A gas collecting cover of the smoke evacuating device is arranged in the test box and faces the lithium battery. During combustion, the lithium battery is arranged on the heater. After the combustion is finished, an air extracting pump is opened to evacuate smoke. A combustion video of the lithium battery is converted into an image and the image is subjected to image processing by the Matlab software. Thus, the flame height of the lithium battery combustion is obtained.

The invention discloses an adaptive rapid prediction method for crude oil properties based on near-infrared spectrum. A method for constructing a model for predicting the crude oil properties comprises the following steps of: (1) determining the property data of a crude oil sample; (2) determining a near-infrared spectrum of the crude oil sample; (3) preprocessing the near-infrared spectrum obtained in step (2) to establish an initial training set; (4) using the method of combining principal component analysis (PCA) with the Hotelling T2 statistical to eliminate abnormal sample points from theinitial training set to obtain a final training set; (5) performing the principal component analysis on the sample obtained in step (4), and storing the load vector with the contribution value of thefeature value greater than 95% as P<pca>; (6) selecting a local training set by the similarity index (SI) after the dimensional reduction of the near-infrared spectrum of the sample to be tested by P<pca>; and (7) determining one or more wavenumber segments according to the local training set, and using the partial least squares (PLS) method to establish a local model for the crude oil properties.

The embodiment of the invention provides a page testing method, device and system and a storage medium, and the method comprises the steps: intercepting a page testing request of a browser; modifyingan original domain name in the page test request into a target domain name to obtain a target test request, the target domain name pointing to a proxy server; sending the target test request to the proxy server, so as to enable the proxy server to forward the target test request to a test server; and receiving the test page fed back by the test server through the proxy server. According to the embodiment of the invention, complex configuration can be avoided, a test mode is simplified, and professional requirements on test personnel are reduced.

The invention provides a preparation method of a SrTiO3-TiO2 composite porous microsphere photocatalyst, and relates to a preparation method of a SrTiO3-TiO2 porous microsphere photocatalyst. The invention primarily to solve the problems of small specific surface area, large product size, uniform pore size, low photocatalytic activity, expensive titanium source and difficulty in practical application of the existing SrTiO3-TiO2. The method of the present invention is as follows: first dissolving a titanium source in ethanol, adding glycerol to the mixture, conducting hydrothermal reaction, adding ethanol to the precipitate, then conducting to a hydrothermal reaction, centrifuging and drying, and finally calcining into a powder, so as to obtain the SrTiO3-TiO2 porous microsphere. The invention has the advantages of simple process, low cost, little environmental pollution, simple equipment requirement, and easiness to commercialization.

The invention discloses a method for constructing a model for rapid analysis of crude oil properties based on a near-infrared spectrum by using a Gaussian process regression model. A method for constructing a model for predicting the crude oil properties comprises the following steps of: (1) determining the property data of a crude oil sample; (2) determining a near-infrared spectrum of the crudeoil sample; (3) preprocessing the near-infrared spectrum obtained in step (2) by subtracting a straight line to eliminate the background interference and the baseline drift; (4) performing principal component analysis (PCA) on the spectrum obtained in step (3), and storing a load vector with the contribution rate of the feature value greater than 95% as P<pca>; (5) using the P<pca> to reduce the dimension of the training subset composed of randomly selected samples, obtaining a sub-model by the Gaussian process regression (GPR); (6) selecting the training set by the Gaussian process regression(GPR) after the dimensional reduction of the near-infrared spectrum of the sample to be tested by the P<pca>; and (7) determining one or more wavenumber segments according to the training set, and using the partial least squares (PLS) method to establish a prediction model for crude oil properties.

The invention discloses a method for establishing models for rapidly predicting crude oil properties by the aid of an attenuated total reflection probe and a near-infrared spectroscopy and an application of the method. The method includes: 1), establishing a training set of crude oil, and measuring properties of the crude oil in the training set; 2), measuring a near-infrared spectrogram of the crude oil in a near-infrared spectral region with the attenuated total reflection probe; 3), subjecting near-infrared spectrum, of the crude oil, obtained in the step 2) to pre-processing; 4), performing selection of training set samples on pre-processed spectrum data, and removing abnormal sample points; 5), selecting specific spectrum wave numbers according to to-be-measured properties of the crude oil and the spectrum data of the crude oil and establishing mathematical correlation models between the crude oil properties and the near-infrared spectrum data by the aid of a partial least squaresmethod. With the method, unknown crude oil properties can be predicated and analyzed rapidly; complex sample pretreatment is not needed, and the method has the advantages of simpleness in operation,high signal-to-noise ratio of the near-infrared spectrum, high precision of quantitative analysis of the models and the like.

The invention relates to a controllable preparation method and the application of a Cu7S4-Cu9S8 heterostructure hollow cube catalyst. The invention relates to the field of a catalyst, and particularlyrelates to a controllable preparation method and the application of the Cu7S4-Cu9S8 heterostructure hollow cube catalyst. The invention aims to solve the technical problem of low photocatalytic activity of conventional single copper sulphide. The method comprises the following steps: preparing a cuprous oxide cube by using copper sulfate as a copper source; carrying out stirring at the room temperature in aqueous solution containing ammonium hydroxide by using the cuprous oxide cube as a sacrifice template and using thioacetamide as a sulfur source to prepare Cu2O@Cu7S4-Cu9S8 cube, then removing Cu2O, and carrying out centrifugation, washing and drying to prepare the Cu7S4-Cu9S8 heterostructure hollow cube catalyst. The controllable preparation method has the advantages of simple process,low cost, low environment pollution and simple required equipment. The Cu7S4-Cu9S8 heterostructure hollow cube catalyst prepared by the controllable preparation method, as a catalyst, is applied to oxidize benzylamine into imine under the action of visible light.

The invention relates to a method for testing the permeability characteristic of a full-tailings cemented filling slurry, and belongs to the technical field of mine full-tailings cemented filling. The technical scheme of the method is characterized in that the method comprises the following steps: adding water to cement and full tailings until the concentration is 60-75%, and uniformly stirring to form the filling slurry; dumping the filling slurry into a cuboid tank, and measuring the length and the width of the squared section of the cuboid tank; carrying out permeation motion of free water in the filling slurry under a gap water pressure condition, measuring the permeation water amount in each period of time according to the interval time Ti, and calculating to obtain the settlement height Hi of penetration water; and carrying out value fitting of the obtained Hi and Ti to obtain a relation function of the Hi and Ti, and calculating through function derivation to obtain the permeability characteristic of the filling slurry. The test method has the advantages of simplicity, easy operation, suitableness for the dead zone filling slurry water-filtration scheme design and the researches on the permeability characteristic of the full-tailings cemented filling slurry, and accurate obtaining of the permeability characteristics of the full-tailings cemented filling slurry in different periods of time under conditions comprising different cement-sand ratio and different concentrations.

The invention provides a method for building a crude oil property rapid prediction model by use of a reflecting near infrared fiber probe and application of the method. The method comprises the following steps: building a crude oil calibration set, and measuring, calibrating and concentrating properties of crude oil; acquiring a near infrared spectrum of crude oil by use of the reflecting fiber probe; pre-treating the near infrared spectrum of crude oil, obtained in the step II, by use of a first-order differential method; selecting a training set sample for pre-treated spectral data by use ofa principal component analysis method; according to the to-be-measured properties of crude oil and a crude oil spectral data set, selecting a specific spectral band; and building a mathematical correlation model between the properties of crude oil and the near infrared spectral data by use of the partial least square method. During on-line application of the method, complicated sample pretreatment is not needed, and the characteristics that the operation is simple, the signal-to-noise ratio of the near infrared spectrum is high, and the precision of the quantitative analysis model is high areachieved. Through selecting a near infrared instrument and the reflecting near infrared fiber probe of which the models are appropriate, on-line/off-line rapid analysis on the properties of crude oilcan be finished.

The invention relates to the technical field of signal testing for a transformer substation, and provides a signal testing system, method and device for substation control level equipment of the transformer substation. The signal testing system for the substation control level equipment of the transformer substation comprises monitoring system equipment of the transformer substation, remote-action system equipment of the transformer substation, and the signal testing device for the substation control level equipment of the transformer substation which are connected through a substation control level network, wherein the signal testing device for the substation control level equipment of the transformer substation can obtain MMS signal points of various bay level equipment from a pre-configured substation configuration description (SCD), generate analog signals of the MMS signal points, and send the analog signals to the monitoring system equipment and the remote-action system equipment; the monitoring system equipment can determine whether the monitoring system equipment works normally or not according to the analog signals, and the remote-action system equipment can determine whether the remote-action system equipment works normally or not according to the analog signals. The signal testing system, method and device provided by the invention can solve the problems in the prior art that signal testing methods for the substation control level equipment are relatively complicated, and are relatively dependent on complete establishment of the substation control level network.

The invention discloses an RV reducer torque and noise precision measuring device and method and belongs to the detection equipment field. The device comprises an installation rack and a mute box. Theinstallation rack is fixed to an operation platform and a vertical linear slide rail is fixed to the installation rack. A fixing support is fixed to the slide block of the linear slide rail and movesvertically along with the slide block. A servo motor is installed on the fixing support, and the servo motor is connected to a test shaft through a torque sensor. The fixing support is connected to avertical driving device. An RV reducer to be measured is detachably fixed to the operation platform through a reducer clamping tool. The axis line of the test shaft passes through the rotation centerof the RV reducer so that the test shaft can be inserted vertically into the central shaft hole of the RV reducer so as to form transmission. The mute box integrally covers the measuring device and avibration noise sensor for measuring the vibration noise of the RV reducer is arranged in the mute box. Operation is convenient and test efficiency is high.

The invention relates to a module pin connectivity testing device and system. The module pin connectivity testing device comprises an electric signal acquisition circuit, a control unit, a grounding probe and a testing probe corresponding to a pin to be tested of a tested module, wherein the grounding probe is used for connecting a grounding pin of the tested module; the testing probe is used forconnecting a corresponding pin to be tested; the electric signal acquisition circuit is connected with the grounding probe, the testing probe and the control unit, and is used for acquiring an electric signal and transmitting the electric signal to the control unit; and the control unit is used for acquiring a corresponding numerical value according to the electric signal, and judging the connectivity of the pin to be tested connected with the testing probe according to the numerical value. Through adoption of the module pin connectivity testing device, connectivity testing of the pin to be tested can be realized without startup running of the tested module or cooperation with an AT command. A testing way is simple, and is short in time consumption; and the testing efficiency can be increased greatly.

The embodiment of the invention discloses a wrist intelligent wearable device and a message notifying method thereof. The wrist intelligent wearable device comprises a case, a wearable device body anda brain wave signal collecting unit, wherein the brain wave signal collecting unit comprises a detecting electrode set and a signal processing circuit; the detecting electrode set is arranged on oneside of the case, which is in contact with the wrist of a user, and is in direct contact with the skin of the user, meanwhile, the detecting electrode set is composed of at least detecting electrodesconnected with the signal processing circuit for acquiring analog brain wave signals transmitted from human body to the wrist and transmitting the analog brain wave signals to the signal processing circuit; the signal processing circuit is used for the analog brain wave signals into digital brain wave signals and transmitting the digital brain wave signals to the wearable device body. By means ofthe wrist intelligent wearable device, the user can test the brain wave signals anytime and anywhere, the testing method is simple, and the wrist intelligent wearable device is convenient to carry andapplicable to common users.

The invention discloses a dry flow test method and a test device which includes hydraulic oil test medium and a product master body. The dry flow test method is characterized in that the hydraulic oil test medium does not contact with a test product. The dry flow test method includes the following steps of: 1, inserting the lower end of a transparent tube into the hydraulic oil test medium; 2, sealing and connecting the upper end of the transparent tube with a fluid suction port of the product master body, and calibrating the rising height of the liquid level of the hydraulic oil test medium in the transparent tube when the product master body is under the working conditions of rated rotating speed and rated oil suction time; 3, removing the product master body, and sealing and connecting the upper end of the transparent tube with the fluid suction port the test product, measuring the oil suction time at which the liquid level of the hydraulic oil test medium in the transparent tube rises to the calibrated height when the test product is under the working state of rated rotating speed, and comparing the measured oil suction time with the calibrated oil suction time. If the measured oil suction time is shorter than or equal to the calibrated oil suction time, the test product is qualified. The dry flow test method is simple and accurate, high in repeatability precision, low in cost and short in test period and does not affect the cleanliness of the product.

The invention relates to a method for constructing an agent model of a steady-state simulation result of a sewage treatment dynamic model by utilizing a Kriging interpolation method. According to themethod, after the input variable of the sample is measured, the output value of the steady-state simulation result can be accurately predicted. The method comprises the following steps: 1) setting a sampling strategy and obtaining a training sample and a prediction sample; 2) performing steady-state simulation according to the sewage treatment dynamic model, and recording a result; 3) fitting thetraining sample according to a Kriging interpolation method optimized by a PSO algorithm, and generating a prediction value for verifying steady-state output of the sample; and 4) comparing the difference between the predicted value and the real value, and increasing the number of the training samples to repeat the above operations when the difference is greater than a set threshold. According tothe method, the agent model can be adaptively established according to the to-be-tested sample, and when the real input sample is collected, the result of steady-state simulation can be accurately andquickly predicted, and the calculation amount is greatly reduced.

The invention discloses a testing device and testing method for determining a friction resistance coefficient of high-speed gas flow. On the basis of determining gas flow, pressure, temperature, density, pipe column geometric/mechanical parameters in an injection and production pipe column, a gas-wall friction resistance coefficient is solved; a high-speed gas injection and production working state can be simulated in a peak regulation process of a gas storage well, so that the blank that the friction resistance coefficient of an inner wall cannot be accurately detected under a high-speed injection and production working condition of an existing injection and production pipe column is filled and the testing device and the testing method can be used for designing the injection and production pipe column of a gas storage and carrying out optimization analysis on selected materials; the friction resistance coefficient of the inner wall of the pipe column is determined through detecting information including temperature, flow, pressure, axial strain and the like of the inner wall of the pipe when the high-speed gas flow flows through the gas injection and production pipe column; a conversion algorithm of the temperature of the inner wall of the pipe, the flow, the pressure, the axial strain and the friction resistance coefficient is integrated into a data acquisition and analysis system; the testing method is simple and feasible.

The invention discloses a method and system for testing network pressure by using a virtual machine and a storage medium, the method for testing network pressure by using the virtual machine is used for a network pressure testing system, and the network pressure testing system comprises a testing client, a network switch and a tested server which are connected in sequence, wherein the testing client has a function of simulating a plurality of testing virtual machines. The method for performing the network pressure test by using the virtual machines comprises the following steps: setting the number of a plurality of testing virtual machines needing to be simulated by the testing client according to the number of network ports of the tested server; establishing connection between the testedserver and the plurality of testing virtual machines; and simulating a corresponding number of physical testing machines by using the plurality of testing virtual machines, and carrying out a networkpressure test on the tested server. According to the technical scheme, the problems of high cost and tedious and time-consuming test process due to the fact that an experimental machine room needs tobe erected and a large number of physical machines need to be deployed in a network pressure test mode in the prior art can be solved.

The invention discloses a rotor blade damping block reliability test method, and relates to the technical field of engine testing. The rotor blade damping block reliability test method comprises the following steps that S1, a pressure load F2 is applied to the first side surface (11) of a test damping block (1), wherein the direction of the pressure load F2 is perpendicular to the first side surface (11); the pressure load is applied in a graded way, and each grade of load is increased for 10% of F2 than the last grade of load until the pressure load reaches the value of F2; and S2, a vibration load T is applied to the first side surface (11) of the test damping block (1). The beneficial effects of the rotor blade damping block reliability test method are that reliability testing can be independently performed on the damping block of a rotor blade without being performed along with testing of the complete engine so that the test method is simple, the test period is short and the test cost is low.

The invention discloses a method for determining the corresponding relation between absolute filter precision and a bubble breaking point. The method comprises the steps as follows: (1) aiming at a laminated filter; (2) determining the absolute filter precision of a filter disc by measuring a maximum depth value of a circulating channel on the filter disc; (3) simulating a practical using state of the filter disc through an experiment design; (4) measuring the bubble breaking point of the filter disc through a test; and (5) carrying out depth measurement and bubble breaking point measurement by selecting the filter discs with different maximum circulating channel depths, and determining the corresponding relation between the absolute filter precision and the bubble breaking point. According to the method, the characteristics of the laminated filter are fully utilized, the test can be repeated, the required test equipment is greatly simplified, the test cost is greatly reduced, and the test time is saved.

The invention belongs to the field of data computing technologies and discloses a data computing control system based on a cloud service platform. The data computing control system based on the cloudservice platform comprises a data access module, a configuration module, a central control module, a computing execution module, a data adding module, a formula editing module, a cloud storage servicemodule and a data safety module. Triple encryption on a plaintext on a client of a user owner through an encryption module, so that a triple encryption ciphertext is obtained, fine-grained access control can be achieved, and the computation cost of encryption and decryption of the user owner and the user can be effectively reduced; a key generation sub-module is combined with the encryption module, so that the confidentiality of the data is guaranteed, and anti-collusion aggression and forward and backward safety are provided; and meanwhile, millisecond-level intensive computing of the data can be realized through the computing execution module, so that the maintenance cost is reduced, and a test mode is simplified.

The invention relates to the technical field of water body detection, in particular to a measuring method of the content of arsenic in a water body. The method comprises the following steps: dispersing manganese dioxide with oxidizability into a water body, heating and stirring the water body, and oxidizing all 3<+> arsenic ions in the water body into 5<+> arsenic ions, so as to reduce the toxicity of arsenic in the water body during detection and improve the detection safety; and ensuring that pentavalent arsenic and molybdenic acid are interacted to produce an arsenic molybdate molybdenic acid mixture, and ensuring that the mixture is reduced into molybdenum blue to perform color development in boiling water to perform the detection of the content of arsenic. The method has the advantages that low-valent arsenic ions are oxidized with an oxidizing agent, the producing of toxic gaseous arsenide hydrogen is avoided, the testing mode is simple, the flow is simplified, and the method issafe and reliable.

The invention discloses test equipment for a cooperative mechanical arm driving power board. The equipment comprises an installation platform, and a test tool, a test mainboard and a power supply device which are located on the installation platform, and the test tool is provided with a conductive probe which is electrically connected with the tested driving power board. The test mainboard is provided with a communication interface used for outputting a detection result and a plurality of function interfaces used for being electrically connected with a tested driving power board. The power supply device is used for being electrically connected with the test mainboard and supplying power to the tested driving power board. According to the invention, the test mode of the driving power boardis simplified, and the detection efficiency is improved. In addition, the invention also discloses a test method for the cooperative mechanical arm driving power board.

The invention discloses a test method and test system for the field of view of a lens. According to the scheme, arc equipment is adopted, a test arc is arranged on the inner wall of the arc equipment,multiple angle marks are arranged on the test arc, the test arc is imaged at the location of the test arc through a lens to be tested, and based on the principle that the arc with the same angle hasthe same length, the field of view of the lens to be tested can be obtained according to an image collected by the lens to be tested. Thereby, according to the technical scheme of the invention, within the allowable range of the resolution of the lens to be tested, the test accuracy of the field of view can be higher by setting the accuracy of the angle marks, the test method is simple, and the test efficiency can be improved.