37results about How to "Avoid result errors" patented technology

The invention discloses a method for measuring coal sample methane adsorbing capacity through low-field nuclear magnetic resonance. According to the method, selected measuring parameters are used for carrying out low-field nuclear magnetic resonance measurement on powder coal samples after methane adsorption balance under set pressure, the nuclear magnetism T2 spectrum of methane in the coal samples is obtained, then signal amplitude integrals of the first spectrum peak (in the range of 0.1-4ms spectrum) on the left of the T2 spectrum are substituted to a hydrogen content index reticle equation of methane under the standard condition built through an experiment, the standard condition size of methane adsorbed by the coal samples is obtained, and therefore the methane adsorbing capacity of unit mass of coal under the set pressure is obtained. According to the method, the scale relation of methane mass and nuclear magnetic resonance 1H nuclear signals is built, the quantitative assay of methane adsorbing capacity under the same temperature and different pressures is achieved, and the novel method can be used for measuring coal methane absorbing capacity in a real-time, home-position and dynamic mode.

The invention discloses a terminal credibility identification method, which comprises the following steps: acquiring a first parameter of a target terminal, and acquiring a second parameter of the target terminal based on the current login state of the target terminal; determining a first credibility of the first parameter and a second credibility of the second parameter; determining a weight value of the first credibility and a weight value of the second credibility based on the login state, and calculating the credibility of the target terminal; and determining whether the credibility is lower than a preset threshold, and if not, determining that the target terminal is credible. The invention further discloses a terminal credibility identification device and equipment and a computer readable storage medium. Through the login state of the terminal, the credibility of the terminal is identified by adopting a plurality of parameters, so that a result error caused by a single parameter is avoided, and an identification result is more accurate.

The invention discloses a detection auxiliary device, which is used for assisting detection test paper to bear a sample and displaying a detection result, and comprises a reagent bearing device and a test paper clamping sleeve mutually inserted. When the test paper clamping sleeve is clamped with the reagent bearing device, the sample suction section of the test paper is immersed into a sample solution of the reagent bearing device to finish sample bearing work.

The invention discloses a device and a method for detecting water seepage of a dynamic water pressurizing anti-lateral seepage asphalt pavement. The device is characterized in that a to-be-tested part is arranged between a pressurizing top plate and a pressurizing bottom plate, and is reinforced by a reinforcing screw rod; the water adding or air filling pressurizing in a water seepage tank is controlled by a controller, so that pressurizing water acts on the to-be-tested part in a pulse type dynamic pressurizing mode; a lateral seepage water collection tank and a direct seepage water collection pipe are respectively used for collecting lateral seepage water and direct seepage water. The method has the advantages that the water seepage environment of the asphalt pavement in the actual use process is truly represented, the influence of lateral seepage to water seepage of the pavement is effectively avoided, and the anti-water seepage ability of the asphalt pavement is more accurately evaluated and judged.

A dry crop wet damage identification device comprises a water supply pipe, a water storage tank, a water level monitoring unit and a water pump, wherein the water supply pipe and the water storage tank are arranged in a test area; and the water level monitoring unit and the water pump are arranged outside the test area. The water level monitoring unit is used for detecting and controlling water level in the water storage tank; and a water flow channel is arranged in the test area. The dry crop wet damage identification device has the advantages that through the design of the dry crop wet damage identification device, the water level can be controlled automatically according to actual requirements so as to achieve waterlogging stress treatment of different degrees, and the requirements on moisture needed for normal growth of crops can be met by automatically controlling the height of underground water level during a non-waterlogging treatment period; that is, on the premise that the natural characteristics of soil of a planting area are maintained, wet damage research is performed on various dry crops, measurement errors of soil temperature and structure are avoided, and a research period is shortened. Through the design of an operation area, the interference of human factors is reduced, moisture permeate from bottom to top, and the problem that root systems are directly subject to impact due to water supply on the earth's surface, so that soil hardening is caused is solved.

The invention relates to a power system standby shortage risk scene identification method. The method comprises the following steps of: S1, selecting sample features influencing positive and negative standby, and constructing an initial sample set; S2, screening sample features with relatively large mutual information as training sample features, and constructing a training sample set; S3, constructing a decision tree model, and determining an optimal division feature of the decision tree model according to the Gini index of the training sample set under each training sample feature division; S4, selecting the minimum sample number of the optimal leaf nodes by adopting a cross validation method; S5, generating a decision tree sequence with an error correction mechanism; S6, pruning the decision tree sequence to generate an optimal decision tree sequence with error correction codes; S7, evaluating the decision tree model with the error correction mechanism; and S8, utilizing the evaluated decision tree model to identify the standby shortage risk scene of a power system. According to the method, the possible positive and negative standby shortage risk of the power system can be pre-judged, so that the safety of the power system is ensured.

The invention provides a method and a device for detecting the health conditions of dairy cows, and relates to the field of intelligent management in animal husbandry. The method comprises the steps of acquiring the body temperature of the dairy cows and triaxial acceleration by using a monitoring device so as to obtain a body temperature data sample set of the dairy cows and a triaxial acceleration data sample set in a set time period; carrying out statistic analysis on the data sample sets, combining the temperature of the dairy cows with the motion state of the dairy cows, and realizing theidentification of the health conditions of the dairy cows by means of logic coding. The method and the device have the beneficial effects that the result error caused by judging in a single aspect can be avoided, and the accuracy and credibility of the judgment results of the health conditions are improved.

The invention provides a test fixture, a test system and a test method, and belongs to the technical field of conductivity and battery electrochemical performance test. The test fixture comprises a clamping part and a current collecting part. The clamping part comprises an upper clamping disc and a lower clamping disc; a blind hole with an upward opening is formed in the center of the lower clamping disc and serves as a carrying groove. The current collecting component comprises an upper current collecting piece and a lower current collecting piece; the upper current collecting piece, the object to be detected and the lower current collecting piece are sequentially placed in the object carrying groove from top to bottom; the upper clamping disc is located above the lower clamping disc. By arranging the protective cylinder, the problem of electrolyte fusion and outflow at high temperature is solved; the upper collector piece and the lower collector piece are arranged above and below the object to be tested, so that the problem of test result error caused by poor contact between the clamps and the solid electrolyte is solved. And the system is convenient to operate and wide in application range, and has important significance for measuring the conductivity of the solid electrolyte/the electrochemical performance of the single thermal battery at high temperature.

The invention provides an optical pulse wave image measuring instrument and a pulse image measuring method. The optical pulse wave image measuring instrument includes a base, a cover, an imaging module, a light source module, a structured light projection device, a circuit module, a computing module and a display module. The outer cover is disposed on the base. The imaging module is disposed in the outer cover, and is used for capturing an image of an area to be measured. The light source module is disposed on one side of the imaging module. The structured light projection device is disposed inside the cover. The circuit module is electrically connected to the imaging module and the light source module. The operation module signal is connected to the circuit module. The display module signal is connected to the operation module. The optical pulse wave image measuring instrument of the present invention can be used to capture the pulse wave image at the wrist area of the subject and visualize the pulse information to obtain a highly accurate pulse measurement result.

The invention discloses an automobile morphology active vision detection system and method based on an unconstrained homocentric beam family, and aims at solving the problem of automobile morphology active vision detection based on the unconstrained homocentric beam family. The automobile morphology active vision detection system based on the unconstrained homocentric beam family is mainly composed of a camera (1), a three-dimensional target (2), a laser line projector (3), a two-dimensional target (4), a two-dimensional target base (5), a connecting piece (6) and a tripod (7). The automobilemorphology active vision detection method based on the unconstrained homocentric beam family comprises the four steps of image acquisition, calibration of a position relation between the two-dimensional target (4) and the laser line projector (3), laser line reconstruction in a coordinate system of the camera (1), and automobile characteristic point reconstruction in the coordinate system of the camera (1). The automobile morphology active vision detection system and method based on the unconstrained homocentric beam family, which is simple in structure and reliable in performance is provided.

The invention discloses an online classification system and method based on multi-source remote sensing application data, and belongs to the technical field of satellite remote sensing. The method comprises the following steps of 1, constructing a multi-source data retrieval model based on space and elements, directly positioning remote sensing image data meeting requirements according to the model, and quickly and accurately obtaining metadata information; 2, performing two-dimensional visualization on the online customized product of the user, analyzing the product data information of the online customized product in a time sequence analysis and space analysis mode, and performing online analysis and visual display on the product data information by using a scatter diagram, a pie chart and a histogram; 3, the user with the browsing and downloading authority browses and downloads the product data of the customized product meeting the actual requirements of the user in the step 2 by means of a related view button and a related tool; and 4, calling an online classification algorithm to perform online processing on the satellite remote sensing image according to the product information downloaded by the user in the step 3.

The invention belongs to the technical field of gas detection, and discloses an air concentration monitoring system and method and an air purifier, the air concentration monitoring system comprises a first detection module, a second detection module and a signal processing module, the first detection module performs target gas detection on a to-be-detected air sample, the to-be-detected air sample is converted into a target gas voltage signal and the target gas voltage signal is output to a signal processing module; the second detection module performs gas detection on the to-be-detected air sample, converts the to-be-detected air sample into a gas voltage signal and outputs the gas voltage signal to the signal processing module; and the signal processing module determines a gas detection difference value according to the target gas voltage signal and the gas voltage signal, and determines a concentration value of the target gas according to the gas detection difference value and a preset gas concentration algorithm. According to the invention, one detection module is used as a reference, the other detection module is used for measurement, and a low-cost scheme, i.e., two cheap detection modules, is used for replacing a high-cost scheme, i.e., a special sensor, so that the measurement cost is reduced.

The present invention provides a method and an apparatus for detecting a sample containing at least an object requiring detection. The method comprises: adopting a detection having light sources with different positions to sequentially irradiate the sample with the light sources with different positions to obtain a plurality of projections produced on the one projection surface of the object requiring detection under irradiation of the light sources with different positions; and comparing the plurality of the projections of each object requiring detection and a plurality of projections of a reference object with the known type so as to determine the type of the object requiring detection. According to the present invention, the existing large and complex pattern recognition software is not required, and the error caused by different proficiency of operators is avoided.

The invention relates to a chicken infectious bronchitis live vaccine potency detection method, which comprises the following steps: 1) designing a primer; 2) diluting, inoculating and cultivating virus; 3) harvesting virus; 4) performing PCR detection; and 5) calculating virulent valence. The chicken infectious bronchitis live vaccine potency detection method is simple to operate, uniform in determination conditions, strong in controllability, small in batch errors, the detection period of the chicken infectious bronchitis virus potency is shortened, and the application range is wide.

The present invention discloses a device based on an atomic force microscope. The device is capable of measuring surface force, electrical, magnetic and thermal properties of sample materials in a special wave band light irradiation condition in real time. The device system is mainly formed by an irradiation device, an external light source and light-guide fibers. The irradiation device is formedby a housing, a point light source, a lens and a lens hood. When used, the irradiation device portion is installed under an objective table for cooperation with the atomic force microscope, the external light source emits an incident beam with special wavebands (ultraviolet, visible light and infrared), the beam is conducted to the point light source in the irradiation device through the light-guide fibers and is diffused upwards in the point shape, and divergent light is restrained by the lens to become parallel light to irradiate the surface of a material sample. The device system is independent of a laser system of the atomic force microscope and has no interference with the laser system of the atomic force microscope, the device employs different external light sources or modes of installing optical filters to regulate the irradiation wavebands, and real-time detection of a plurality of property indexes such as force, electrical, magnetic and thermal properties of samples is achieved through replacement of an atomic force microscope scanning probe module and a mode of a software scheme. Compared to a current test method, the device provided by the invention can accurately reflect the change conditions of the correlation property indexes of the materials in the irradiation process.

The invention discloses a method for mining a relationship between drug pairs and efficacy from prescription information. The method comprises the following steps: 1) collecting authoritative prescription information data, wherein the data comprises prescription efficacy major treatment information and traditional Chinese medicine composition information; 2) carrying out data cleaning and structuring to facilitate subsequent model training and information mining; and 3) establishing a data mining model, fitting samples, and learning parameters with high interpretability; and 4) obtaining interpretability parameters learned by the model, performing subsequent filtering processing, eliminating noise, reserving useful drug pair information, and mining the relationship between the drug pairs and the efficacy. A heuristic strategy is adopted for filtering, the association degree between the efficacy and the drug pairs is measured according to the efficacy prediction accuracy, and most of invalid relationships can be eliminated.

The invention provides a deep vertical displacement monitoring point device. The deep vertical displacement monitoring point device comprises a measuring head device and a measuring rod; the measuringrod comprises at least one sub-rod; two axial ends of the sub-rod are respectively provided with an abutting joint hole and an abutting joint platform; the measuring head device is provided with theabutting joint hole or the abutting joint platform; due to matching of the abutting joint hole and the abutting joint platform, connection between the measuring head device and the adjacent sub-rod isrealized; multiple sub-rods are coaxially arranged, and sequentially connected end to end through matching of the abutting joint hole and the abutting joint platform between the adjacent sub-rods; atleast one locking slot is arranged on the inner wall of the abutting joint hole; a displacement locking block matched with the locking slot is arranged on the outer wall of the abutting joint platform; the abutting joint platform is inserted into the abutting joint hole; and furthermore, connection of the two is realized through matching of the displacement locking block and the locking slot. Thedevice in the invention can effectively prevent the monitoring result deviation condition due to a gap between the sub-rods; and in addition, due to arrangement of a sealing part, soil and water in asoil body can be effectively prevented from corroding the interior of the device.

The invention discloses a shooting triggering system suitable for an ultra-high-speed camera in brittle material research. The system comprises a conductive sheet a, a conductive sheet b and an ultra-high-speed camera. Both the conductive sheet a and the conductive sheet b are connected to a copper-silver conductive coating which is applied to the surface of a concrete test piece. The conductive sheet a is connected to a coaxial cable center copper wire, and the conductive sheet b is connected to a coaxial cable mesh conductive layer wire. The joint of the conductive sheet a and the coaxial cable center copper wire and the joint of the conductive sheet b and the coaxial cable mesh conductive layer wire are fixed by staples, and two breakage trigger sensors are formed. The ultra-high-speedcamera is connected to two coaxial cable BNC connectors. The coaxial cable center copper wire and the coaxial cable mesh conductive layer wire are connected to the two coaxial cable BNC connectors through coaxial cables. According to the shooting triggering system, the problem of relying on human triggering and conductive wire triggering of the ultra-high-speed camera in the prior art is solved.

The invention discloses a steady-state test method and system for a transient voltage overshoot value of a direct-current voltage divider, belongs to the technical field of direct-current voltage divider test, and aims to solve the technical problem that the transient voltage overshoot value of the step process cannot be tested in a transient test of a direct-current electronic voltage transformerin the prior art. AC voltage signals of the standard voltage divider and the DC voltage divider under the test voltage source are sampled respectively to obtain a standard voltage divider sampling sequence and a DC voltage divider sampling sequence; the AC signal amplitude of the standard voltage divider and the AC signal amplitude of the DC voltage divider are obtained; a direct current signal amplitude of the standard voltage divider and a direct current signal amplitude of the direct current voltage divider are obtained; a high-frequency voltage division ratio is calculated; a direct-current voltage division ratio is calculated; and the transient voltage overshoot value of the direct-current voltage divider is calculated according to the high-frequency voltage division ratio and the direct-current voltage division ratio. The direct-current voltage divider is directly tested to replace the whole direct-current electronic voltage transformer so that the test work is easy to realize,and the calculation precision is higher.