74results about How to "The data result is accurate" patented technology

The invention relates to an apparatus for a high-temperature creep test and a stress relaxation test of a rubber elastomer. A stress loading part is positioned right above a temperature control part; a clamp comprises an upper pressing plate and a lower pressing plate which correspond to each other in the vertical direction, wherein the upper pressing plate is horizontally suspended in a high-temperature test box by virtue of a connecting rod, and the lower pressing plate is movably installed in the high-temperature test box; an upper crossbeam is positioned above a lower crossbeam; two ends of the upper crossbeam are fixed on a side plate, and two ends of the lower crossbeam are fixed on the side plate by virtue of a slide apparatus which can slide up and down along the side plate and can be positioned; a straight shaft vertically penetrates through the upper crossbeam, the upper end of the straight shaft is fixedly provided with a weight disc, and the lower end of the straight shaft pushes against the upper surface of the lower crossbeam; a pressure sensor is connected with a connecting rod penetrating through the top of the high-temperature test box; a displacement sensor is fixed on the side plate; and a drive part comprises a ball screw pair consisting of a ball screw and a bearing, the bearing is installed on a base, the ball screw is engaged with the bearing, and the ball screw is detachably connected with the lower crossbeam by virtue of a fixed bracket.

The invention discloses an automobile tyre fixture, which comprises a fixture body, wherein two telescopic rods are arranged inside the clamp body, the two telescopic rods extend outwards or contract inwards from both ends of the fixture body simultaneously, stroke lengths of the two telescopic rods extending outwards or contracting inwards are identical, the end heads of the two telescopic rods are symmetrically provided with tyre positioning mechanisms, each tyre positioning mechanism comprises a positioning plate and a positioning shaft perpendicularly connected with the positioning plate, each positioning plate is fixedly connected with the end head of the corresponding telescopic rod, each positioning shaft is sleeved with a tread connecting part in contact connection with a tread of a tyre, each positioning plate is further provided with a measuring equipment connecting part, and the measuring equipment connecting parts on the end heads of the two telescopic rods are positioned on the same horizontal plane. The automobile tyre fixture is simple in structure and convenient to operate, realizes the effect of taking the tyre of an automobile wheel as a benchmark, facilitates subsequent measurement equipment to measure an automobile wheel toe-in, ensures that data results of other subsequent measurement works are real and precise, and improves the subsequent adjustment precision of the automobile wheel toe-in.

The invention relates to a big-data analysis system. According to the system, various data collection manners can be utilized to collect data; an encrypted data signal is formed by the collected datathrough encryption processing; the encrypted data signal is transmitted to a data storage module through a data transmission module; the encrypted data signal is transmitted to a data analysis serverby the data storage module; and in the data analysis server, firstly, the encrypted data signal is decrypted through a data decryption module, detection, marking, classification and analysis are sequentially carried out on a decrypted data signal through a data detection module, a data marking module, a data classification module and a data analysis module, then a data analysis result is obtained,the data analysis result obtained by the data analysis module is evaluated through an evaluation module, and finally, deviation correction is carried out on an unqualified data analysis result through a correction module. Accuracy of the big-data analysis system is improved.

The invention discloses a method for detecting the dynamic queue length of vehicles. The method comprises the following processes traveling tracks of the vehicles in a detection area are tracked, thepositions and speed of the vehicles are obtained, and zoning management is conducted by using a lane as a unit; the speed of the vehicles and the distance between the two adjacent vehicles in the samelane are compared with a set dynamic queue speed threshold and dynamic queue distance threshold, and whether the vehicles belong to a dynamic queue or not is determined; and the dynamic queue lengthis calculated according to dynamic queues of lanes. According to the method for detecting the dynamic queue length of the vehicles, track tracking detection is conducted on the vehicles in the lanes,the length of the queuing vehicles in the lanes are dynamically calculated, so that the data result is more actual and accurate, and an accurate basis is provided for traffic intelligent management; and the method can further calculate the queuing length of the lanes, and the queuing length is output according to the lanes.

The invention discloses an automatic centering device comprising a telescopic body having a center point. Two expansion rods are arranged inside the telescopic body and extend outwardly or contract inwardly simultaneously from the two ends of the telescopic body, wherein the travel lengths of outward extending and inward contraction of the two expansion rods are equal. Besides, hub connecting mechanisms are arranged at the ends of the expansion rods and include height adjusting devices in sliding connection with the ends of the expansion rods and hub positioning blocks that are arranged at the outer side surfaces of the height adjusting devices and are in contact connection with the wheel hubs. According to the invention, the automatic centering device having a simple structure can be operated conveniently; the central point of a rear axle of an automobile can be determined precisely; the work efficiency and measurement accuracy are improved; data results of other follow-up work can be guaranteed to be real and accurate.

The invention discloses a device and method for testing a frost heaving parameter of soil under standard compaction work. The device includes a steel base plate; a separable iron tube is arranged on the steel base plate, a soil sample is in the separable iron tube, and an organic glass tube is arranged on the periphery of the separable iron tube; the separable iron tube, the steel base plate, the organic glass cylinder and a lantern ring are fastened through a fastening device; a water temperature sensor is arranged in the soil sample, and a water temperature data collector is connected with on the outside; a displacement sensor is arranged above the soil sample, and of a displacement data collector is connected on the outside; the two data collectors are connected to a main control computer; and the inner wall of the organic glass tube is coiled with a copper pipe, and the organic glass tube is connected to a cycle refrigeration apparatus through a plastic hose. The device can test frost heaving ratio, moisture migration, temperature transfer of the soil sample under standard compaction work and various conditions, and can quickly remove the frozen soil sample, and observe the soil surface and dissected internal freezing texture, so as to obtain the change rule of frost heaving ratio, and rule of moisture migration and heat transfer.

The invention provides an agitating test device, belongs to the technical field of pharmaceutical chemicals, and the agitating test device is used for solving the problems that the existing agitating test has no special device, is more inconvenient and has inaccurate detection result and large errors. The agitating test device comprises a supporting frame and a vertically-arranged agitating input shaft; the agitating input shaft is positioned on the supporting frame; the lower end part of the agitating input shaft is fixedly connected with a connecting piece which is fixedly connected with a ventilating agitating rod assembly; the supporting frame is fixedly connected with a motor; the rotary shaft of the motor is connected with the upper end of the agitating input shaft; and the agitating test device further comprises an air inlet mechanism, an air flow detection element and a rotary speed control unit; the air inlet mechanism is provided with an air inlet pipe and can be communicated with the ventilating agitating rod assembly; the air flow detection element can detect an air flow state in the air inlet mechanism; and the rotary speed control unit can control the high and low rotary speeds of the motor. The agitating test device has the advantages of simplicity and convenience for operation, labor-saving property, accurate detected data result and smaller errors.

The invention discloses a scale identification method and device and a computer storage medium. The method comprises the steps of obtaining an original scale image; carrying out contour fitting processing on the original scale image to obtain a fitted scale image; acquiring boundary scale data corresponding to the fitting scale image according to the fitting scale image; obtaining pointer position data, corresponding to the fitting scale image, of a pointer; performing modeling processing on the fitting scale image according to the pointer position data and the boundary scale data to obtain a target scale image; and calculating a pointer reading according to the target scale image. The method effectively solves the problem that in the prior art, the error rate is high due to the fact that a pointer type scale instrument directly takes an obtained oval scale instrument as a circle to calculate the pointer reading, and the recognition accuracy of a pointer type scale instrument recognition machine on the pointer reading is effectively improved.

The invention discloses a gravity-magnetic interface inversion-based geodetic heat flow estimation method. The method includes the following steps that: (S1) inversion is carried out on gravity and magnetic data through an improved Parker-Ordenburg interface inversion algorithm, so that a Curie surface and a Moho surface can be obtained, wherein the Curie surface and the Moho surface are calculated through inversion algorithms described in the descriptions of the invention; and (S2) a geothermal target area is evaluated through the Curie surface and the Moho surface. According to the inversionalgorithms of the Curie surface and the Moho surface, h0 is the average depth of an upper interface and lower interface; Delta h2 and Delta H1 are the difference values of the upper interface and thelower interface, and the average depth; s is an iteration step length; rho0 is the residual density of an earth surface geological medium; omega is a circular wave number; F [] is the Fourier transform of a gravity anomaly; Delta g is the gravity anomaly; G is a gravitation constant; a is the index of the change of density along with depth; Delta z is a magnetic anomaly; mu 0 is vacuum magnetic conductivity; and b is the index of the change of magnetic susceptibility along with depth. With the method of the invention adopted, the precision and resolution of interface inversion can be enhanced, and calculation efficiency is improved. The method has very high practical value and promotional value.

The invention provides a radar-based vehicle queuing length detection method and system. The method comprises the steps of obtaining the coordinates and instantaneous speed of a target vehicle at an intersection in a preset coordinate system, and the preset coordinate system being built with a radar installed at the intersection as an original point; determining a lane where the target vehicle is located and a current acceleration based on the coordinates and the instantaneous speed of the target vehicle; judging the state of the lane according to the lane where the target vehicle is located and the current acceleration; and if the lane is in the stop state, recording a tracked and lost target in the lane, and adding the lost target into a queuing area of the lane to calculate the queuing length of the lane. According to the method, the acceleration is used for judging the state of the intersection at the moment, meanwhile, the defect that static and low-speed targets are difficult to recognize by a radar is utilized, tracking loss of vehicles serves as key information to achieve calculation of the vehicle queuing length, and the data result is more real and accurate.

The invention discloses a method for measuring a critical voltage of a solid-liquid interface slip under an electric field, and the method can be used for measuring the critical voltage when the solid-liquid interface slip occurs in the presence of a frictional force under the electric field. The method for measuring the critical voltage is as follows: using a contact angle measuring instrument toobtain advancing angle values of a droplet to be tested under different voltages using an increasing method to obtain apparent contact angle values under different voltages, calculating a maximum solid-liquid interface acting force and a maximum solid-liquid interface friction force according to a formula, and comparing the maximum solid-liquid interface acting force and the maximum solid-liquidinterface friction force to obtain the critical voltage when the solid-liquid interface slip occurs, when the solid-liquid interface acting force is equal to the maximum solid-liquid interface friction force for the first time, the corresponding voltage is the critical voltage of the solid-liquid interface slip. The method is simple in test, data required for the whole test can be measured by thecontact angle measuring instrument, the operation is simple, and test results are accurate.

The invention belongs to the technical field of frost heaving experimental equipment, and particularly relates to an experimental device and an experimental method for simulating frost heaving of accumulated water in a tunnel lining. The experimental device comprises a simulation lining and simulation surrounding rock which are integrally located in a frame, a groove body for containing accumulated water is formed in the simulation lining, the simulation surrounding rock seals the groove body, and a distance measurer is arranged between the simulation surrounding rock and the simulation liningand used for reflecting the swelling amount of accumulated water frost heaving in the groove body. A pressure sensor is arranged at the bottom of the tank body and used for feeding back expansion force of accumulated water frost heaving in the tank body. The distance measurer and the pressure sensor are electrically connected with the data acquisition equipment. The experimental method using theexperimental device can well simulate the tunnel lining accumulated water frost heaving process, real-time change information is obtained, data processing is carried out in combination with processingequipment, and the formed test result has great reference value for engineering quality.

The invention discloses a direct-current motor endurance tester for a new energy bicycle. The direct-current motor endurance tester comprises a main rack body, a fixed motor clamp, a load simulator and a road surface simulator. The load simulator consists of a jacking cylinder and a pressure sensor. The fixed motor clamp includes a fixed rod and a support frame; the middle end of the fixed rod isconnected to the support frame in a rotation manner; and one end of the fixed rod is connected with a to-be-tested motor and the other end is connected with the pressure sensor fixedly. The jacking cylinder is able to apply a load to the to-be-tested motor. The road surface simulator consists of a transmission wheel, an axle, a support column and a magnetic powder brake; the axle is connected to the support column in a rotation manner; the transmission wheel is fixedly connected to the axle; the transmission wheel is abutted against a tire; and the magnetic powder brake is arranged at one endof the axle and is able to provide twisting forces in different directions for the axle, thereby simulating various road surface situations. Therefore, the working environment of the actual working ofthe motor can be simulated and the accuracy of the test result can be improved.

The invention discloses a stone-like coating detection method. The stone-like coating detection method comprises the following steps of a: evenly applying a transparent undercoat on three experiment boards under the environments of the normal pressure and the temperature of 20-30 DEG C, naturally air-drying at the normal temperature, and evenly spraying a stone-like coating on the dry undercoat on the experiment board; b: maintaining the experiment boards sprayed with the stone-like coating in the step a for 16-20 hours under the environments of low temperature and high humidity, wherein the environment temperature is 3-8 DEG C, and the relative humidity is 70-90% RH; c: vertically placing the experiment boards maintained in the step b in a water flushing apparatus under the environments of the normal pressure and the temperature of 20-30 DEG C, washing the experiment boards with water flow for 2-6 hours at the flow velocity of 100-200 ml/min, wherein the temperature of the water flow is 20-30 DEG C; d: placing the experiment boards washed in the step c in a blast apparatus under the environments of the normal pressure and the temperature of 20-30 DEG C, and air-drying the experiment boards for 1-3 hours at the air speed of 2.5-4.5 m/s; and e: recording the detection result of the experiment boards air-dried in the step d. The stone-like coating detection method can rapidly and accurately detect the properties of low-temperature high-humidity water-white resistance.

The invention relates to a test machine for testing the aligning torque of a manually operated recliner of an automobile seat. The test machine for testing the aligning torque of the manually operated recliner of the automobile seat is characterized by comprising a testing device and a framework device which are connected with each other. The testing device comprises a lower worm gear case, a lower worm gear case hand wheel, a rotating seat, a base board, a rotating fixed block, a rotating shaft, an upper worm gear case, an upper worm gear case hand wheel, a sensor rotating framework, a force sensor, a fixed plate, a sense displayer and an automatic angle measurer. The framework device comprises a recliner mounting seat base board, a recliner mounting seat, a recliner lower board, a recliner upper board, a simulation framework sensor stress board and a simulation backrest framework. The lower worm gear case and the rotating seat are fixed on the base board, the upper worm gear case and the framework device are fixed on the fixed plate, the base board, the rotating fixed block, the fixed plate, the sensor rotating framework and the force sensor are arranged from bottom to top in sequence, and the base board, the center axis of the rotating shaft and the fixed plate are parallel to one another. The test machine for testing the aligning torque of the manually operated recliner of the automatic seat is simple in design, reasonable, compact, accurate, reliable and long in service life. Further, the test machine can be used for testing the aligning torque of the manually operated recliner of the automobile seat conveniently.

The invention relates to the field of artificial intelligence, and provides a data prediction method and device based on a fusion model, equipment and a storage medium. The method comprises the steps that prediction is carried out through a fusion model of an empirical formula source model and a neural network source model, a better function model is obtained through the empirical formula source model, then function model parameters in a calculation formula are obtained based on the neural network source model, and finally a predicted value calculated by hypothesis data is subtracted from the predicted value of the current real-time data, so that the obtained data result is more accurate. And a prediction result with guidance and reference is provided for the user.

The invention discloses a reciprocating type oblique impact slide tester. The reciprocating type oblique impact slide tester is characterized by comprising a punch, a sample table, a supporting plate and a rocker, the preset relative position relation between the rocker and the supporting plate is kept through a fixing mechanism when the punch does not exert pressure on the sample table within a cycle of reciprocation, the rocker is driven by the punch to rotate around a bearing when the punch exerts pressure on the sample table, and the rocker rotates around the bearing through the fixing mechanism when the punch stops exerting pressure on the sample table so that the preset relative position relation between the rocker and the supporting plate can be restored and kept till the punch exerts pressure on the sample table again. By means of the tester, the stress state under the material working condition can be effectively simulated, the failure mechanism of obtained failed thin film materials is better matched with the failure mechanism of thin films in the actual working state, and the thin film combination performance result obtained according to the failed thin film materials has higher reference application value.