891 results about "Online test" patented technology

The invention relates to an online fracturing test vehicle. The online fracturing test vehicle comprises a chassis, a shelter, a back protection device, a skirt edge box, a heating system and an automatic leveling device, wherein the shelter is mounted at the upper part of the chassis; the back protection device is mounted at the back end of the chassis; the skirt edge box and a generator are mounted at the side of the chassis; the automatic leveling device is mounted at four corners of the bottom of the chassis; the heating system is mounted at the top of the chassis; the shelter is integrated with an experiment instrument for a fracturing fluid test and a support agent analysis evaluation test; and the experiment instrument for the fracturing fluid test and the support agent analysis evaluation test is mounted on the chassis provided with the shelter, so that the online test can be performed on spot, the detecting accuracy and preciseness can be improved, and the detecting efficiency is improved.

The invention provides a network online examination management information system and relates to a computer management system. The system is provided with a student examination unit, a system administrator unit and a teacher test paper management unit under a B/S (browser/ server) network architecture, wherein the student examination unit realizes online test paper finishing, test score query and personal password modification operation; the system administrator unit realizes teacher information maintenance, student information maintenance, test question bank maintenance and online examination management operation; and the teacher test paper management unit comprises a subject manager module and a course teacher module, wherein the subject manager module can carry out test question adding, test question deleting and test question modification operation, and the course teacher module can carry out test paper organization, generated test paper checking, test paper evaluation and scored or unscored test paper checking. According to the system, examination cost is reduced; the problem of workload of examination work is solved; paper-free examination is realized; the problems of examination cheating and test paper revealing do not exist; and answer safety and examination fairness are ensured.

The invention discloses a method for implementing online tests of stream flow based on video images, and belongs to the technical field of non-contact open channel flow measurement. The method relates to a water flow tracing system, a water surface illuminating system, a video flow acquisition system, a camera calibrating system, an image processing system and a flow estimating system, trace particles are thrown in a flow measuring stream segment by the water flow tracing system, a camera shoots a water surface video stream, frames are extracted at fixed intervals and are processed digitally, the image processing system processes digital images according to ground control point coordinate information provided by the camera calibrating system, and finally, the stream flow is computed by the aid of the flow estimating system according to a flow rate and area method. By the aid of the method, complicity of stream flow measurement is reduced, simultaneously, high measurement precision can be guaranteed, and the stream flow can be dynamically monitored in extreme environments.

This invention relates to one gas wheel motor rotor coil shortcut online test method in the test technique field, which comprises the following steps: through online real time collecting motor electrical parameter data and according to one certain work situation motor electrical parameter data to compute normal current theory values by reverse rotor normal current; then computing excitation magnetic current real value and theory value relative bias; the bias difference is as generation motor set to judge whether there is coil short cut fault as dialogue of the shortcut fault.

The invention discloses a performance testing system and method for an autonomous vehicle. The method comprises the steps: obtaining a testing demand, and generating an offline testing parameter and/or online testing parameter according to the testing demand, wherein the offline testing parameter is used for configuring the offline simulation test of equipment on a to-be-tested vehicle, and the online testing parameter is used for configuring the real drive test of the to-be-tested vehicle; carrying out the offline simulation test of the to-be-tested vehicle based on the offline testing parameter, and obtaining a testing result; carrying out the real drive test of the to-be-tested vehicle based on the online testing parameter, and obtaining a testing result. The system and method providedby the invention can achieve the integrated test, comprising the offline test and the real drive test, of the autonomous vehicle according to the actual testing demand. Compared with the prior art, the system and method can obtain a more accurate and complete testing result.

The invention discloses an online test method for a characteristic parameter of a bearing-rotor system. The online test method comprises the steps of: installing a signal acquisition system on the bearing-rotor system supported by a sliding bearing; regulating the rotation speed of a main shaft, and starting a drive motor and a signal acquisition instrument; acquiring vibration signals of specific positions in real time by an eddy current displacement sensor, and storing the vibration signals by the signal acquisition system; establishing a bearing-rotor system model by adopting a finite element method; and applying a characteristic parameter optimization method of the bearing-rotor system based on combination of machinery dynamics modeling with a genetic algorithm to ensure that a theoretical vibration state obtained through the simulation model is close to an actual measurement value, thereby realizing online solving of the rigidity and damping coefficient of the sliding bearing, the off set of a rotor and the like of the bearing-rotor system. Compared with the traditional method, the online test method disclosed by the invention has the obvious advantages that external excitation or multiple machine start/stop does not need to be performed on the bearing-rotor system, and the online test method is simple and reliable and has the characteristics of high efficiency, high stability and high precision.

This invention relates to one rack electricity sending circuit online monitor system and method, which process online test on rack circuit micro wind vibration and wire temperature and bias wind and comprises data monitor device, base station and monitor supportive system, wherein, the data monitor device is in rack send circuit sent to base station through short distance sensor network broadcasting; base station receives the data to send to monitor supportive system center station through mobile communication network; the center station receives the network sending information to fulfill tasks of circuit micro wind vibration and wire temperature testing.

The invention discloses a self-adaptive online assessment system based on the IRT. The online assessment system comprises an assessment question bank building module, an online test module and a statistic analysis module. The assessment question bank building module is used for collecting test questions to build an assessment question bank and outputting test papers from the test question bank according to different screening rules; the online test module is used for performing multiple tests including the self-adaptive online test based on the IRT according to the test papers and automatically generating test data, and the self-adaptive online test based on the IRT is a dynamic self-adaptive online test based on a two-level score keeping module; the statistic analysis module is used for obtaining a statistic result automatically according to the test data and preset scoring standards and generating an evaluation report. The invention further discloses a self-adaptive online assessment system based on the IRT.

The invention relates to a system and method for the online testing of a radiation effect of a modular digital integrated circuit, and the system enables all needed function circuits in the effect testing to be divided into relatively independent modules on the basis of summarizing the similarities and differences of conventional digital integrated circuit radiation effect online testing systems. The electrical and mechanical connection among the modules, the design in the modules and the mechanical structure of a system board respectively employ conventional industrial standards, thereby achieving a purpose that a system can employ a commercial module or an independently developed modular for quick connection, enabling the system to be better in expandability, and saving the design time and cost of hardware. The method can be used for the majority of the online testing of the radiation effect of digital integrated circuits of bullets and satellites. The system plays an important role in standardizing a national radiation effect online testing system.

The present invention is directed to an online product validation solution integrating an online testing module configured to assist a user to create test cases and a remote test automation module configured to execute the created test cases on remote test systems. When a user creates a test plan, complete test coverage for the test plan may be ensured and cross-checked with product specifications stored in the knowledge database. Moreover, seamless integration of the online testing module and the remote test automation module may provide a uniform interface for generating both manual and automated test cases. Test case status is reported within the test plan in synchronicity with test case execution.

The invention discloses an image classification method and system based on an image salient region. The method includes offline training and online test. The offline training comprises: performing ultra-pixel segmentation on an image to obtain multidimensional segmentation blocks, and calculating the characteristic contrast of the segmentation blocks to obtain a target salient map; performing threshold segmentation on the target salient map to obtain a binary image, performing morphological processing on the binary image, and performing automatic segmentation extraction on the target salient map by employing a segmentation algorithm to obtain the salient region; and inputting the salient region to a convolutional neural network for training to obtain an image classifier based on the image salient region. The online test includes: performing automatic segmentation extraction of the salient region on a test image, inputting a salient region image of the test image to the trained image classifier, and performing image classification to obtain an image class mark. According to the method and system, the segmentation result is guaranteed, the workload of artificial interaction is reduced, and the accuracy of image classification is improved.

The invention relates to a method for testing the mechanical of the steel plate on line when rolling, providing a comprehensiveness on-line predicting method based on the physico-metallurgy model and combined with the database, information technology through setting up a corresponding model of microscopic structure, finished size, art component to the mechanical. The method including the following steps: (a) selecting and confirming the parameter of the model; (b) setting up the real-time traffic to the processing machine, calling the art parameter and alloying component dynamic data from the processing database; (c) predicting the ferrite grain size and temperature (d) predicting mechanical of the finished plate. The invention is used specially for low-carbon steel and mini alloyed steel, the adaptive process is heavy and medium plate mill or big mill and finisher in rolling process.

The invention provides a laser damage threshold detection method of optical component and a relative device, which utilizes the laser generated by a laser device to radiate on the surface of an object optical component to generate fluorescent light, to detect the surface morphology change of the optical component, wherein the laser device is KrF laser, and the invention detects the distortion of surface fluorescent light strength distribution on the optical surface to detect the surface morphology change of the optical component. The invention can directly detect damage generation and develop, with wide application for surface damage online tests on ultraviolet optical component and high sensitivity.

The invention discloses a method for testing a deflection/longitudinal displacement change of a bridge based on a four-quadrant position detector. The method is characterized by comprising the following steps: firstly, the four-quadrant position detector is installed in the centre of the bridge or other points to be tested at the bottom of a bridge deck; a laser source is installed on a pier and/or a certain point below the bridge deck through an electric displacement table; then, testing is carried out by matching the four-quadrant detector with the laser source, so that the light spot of laser is over against the centre of the detector; when the deflection of the bridge deck changes, the four-quadrant detector longitudinally moves together with the point to be tested; the light spot position, formed on the four-quadrant detector, of the laser moves oppositely relative to the detector; and different position coordinates of the light spot on the detector before and after the deflection of the bridge changes and light spot position variable quantity on the four-quadrant detector, namely deflection position variable quantity of the point to be tested on the bridge deck can be calculated. The method disclosed by the invention has the advantages of simple structure, good controllability and high precision and is capable of realizing real-time online test of the deflection/longitudinal displacement of the bridge.

The embodiment of the invention provides a method, a device and a system for testing the field programmable gate array, the method of which comprises that: the control chip receives the FPGA (field programmable gate array) and test the data of interface format recognized by the control chip output after the transformer of the related information; the control chip sends the data of interface format which can be recognized to the test computer; the control chip receives the control information sent by the test computer; the control chip sends the control information to FPGA. The embodiment of the invention solves the problems that the online test and remote test can not be achieved due to the limit of JTAG interface and the JTAG cable in length in prior art by the control chip on the veneer and the external communication interface.

A web based Assessment Center system that imposes a prescribed workflow and facilitates defined interactions between the various participants implementing the Assessment Center method using portal technology. The system relies on a hub-and-spoke web-based client/server architecture, and a software foundation comprising an open-architecture modular array of web-based software for data collection and exchange between the various participants. The software modules include a Role profile module by which a customer can specify a freeform customer role profile, a Job Analysis module for distilling suitability ranking factors from the customer's free form Role profile, a Proctor Module for online testing, a Simulation Module for recording video simulations, and a Scoring Module for standardizing multiple Assessor scoring of the recorded video simulations and consolidation of the online test scores and simulation scores into a Data Map for collective decision-making. An integrated Video Training Module for training and certification of Assessors.

The present invention discloses an English teaching language learning system. The system comprises a central processing unit, a power module, a teaching platform module, a study guide module, an online learning module, an online test module, a statistic analysis module, a user management module, an online forum module, a bulletin board management module, a testpaper making module, an item bank management module, a display module and a database module. The English teaching language learning system can allow students to perform consolidation exercise of knowledge points according to personal information to allow the students to improve school record through leak filling; teachers can rapidly monitor students' knowledge point grasping conditions so as to improve the working efficiency; the students can download the students' classroom teaching data and practice data through a data download module, and the students can upload their own learning data to share with other students through a data upload module; and an oral practice unit is employed to help the students with practice of spoken English and solution of the problem of nonstandard pronunciation of English.

An online test system of friction stir welding (FSW) comprises a signal sensing platform, a signal conditioning system and a data acquisition system and is characterized in that the signal sensing platform takes force-measuring octagonal rings as bodies, respectively fixes a vibrating sensor and a temperature sensor on the bodies and integrates multiple sensors; the signal conditioning system has the function of simultaneously processing multi-channel different voltage signals; the invention amplifies, filters and compensates the acquired electric signals for the acquisition system to acquire; and the data acquisition system is self developed and integrates data acquisition, display and storage. The system integrates temperature detection, three-dimensional force detection and vibration detection, realizes synchronous online test of important parameters of FSW and has the advantages of accurate test, simple structure, simple and convenient operation, low cost, etc.

The invention discloses an online test method for the processing of a Cassegrain two-reflector optical system, which is used for the online test of the processing of the non-perfect imaging Cassegrain two-reflector optical system. The optical test system consists of a standard self-collimating plane mirror, the tested Cassegrain optical system, a compensating lens and an aspheric processing surface form detection instrument. The compensating lens is arranged on the back light path of the non-perfect imaging Cassegrain two-reflector optical system to compensate the spherical aberration of the original optical system, thereby enabling the tested Cassegrain two-reflector optical system to form a perfect image on points on the axis, and meeting the processing requirements of the pair of primary and secondary reflectors.

The strip steel surface defect detecting platform based on machine sight includes one strip steel motion simulating platform comprising bench, straight guide rail, slide carriage moving on the guide rail and electromagnetic attractor array; one rectilinear motion controlling device including frequency variable servo control system and ball screw to drive the slide carriage; and one CCD camera and light source regulator including support capable of moving longitudinally, CCD camera regulating support and light source regulating support. The present invention can simulate the motion of strip steel in the production line, and suitable for on-line detection.