539 results about "Method testing" patented technology

Hierarchical testing systems and methods for testing communication systems are disclosed. Testing functions which test entities such as equipment or services of a communication system are classified into testing function groups. The testing function groups have an order which is based on an order of operational dependencies in the communication system. Testing functions to be performed for a particular entity to be tested are selected from testing functions for testing the entity itself and testing functions for testing other entities that have an operational dependency with the entity to be tested. Related data structures and user interfaces are also disclosed.

A laminate comprising a solid electro-optic medium and an electrically conductive layer is tested by passing it over a pair of electrodes at different potentials, with the electrically conductive layer lying on the opposed side of the electro-optic medium from the electrodes. An article which can be tested by this method, and which is useful in the manufacture of electro-optic displays, comprises a layer of a solid electro-optic medium and a release sheet comprising an electrically conductive layer.

A test program development method embodied in a data-empowered test program architecture including a test executive software module; a test framework software module having externally configurable generic software code and being coupled for interaction with the test executive software module; a plurality of software components in a software components module coupled for interaction with the test framework software module and structured for outputting one or more test reports; and one or more external control files coupled for configuring the generic software code of the test framework software module.

An apparatus, method and computer program product are provided for performing a sequence of verification tests to perform hardware and software co-verification on a system under verification. The apparatus comprises a plurality of signal interface controllers operable to be coupled to the system under verification, with each signal interface controller being operable to perform one or more test actions transferring at least one of one or more stimulus signals and one or more response signals between a corresponding portion of the system under verification and the signal interface controller during performance of the sequence of verification tests. A debugger is also provided which is operable to control operation of a processing unit associated with the system under verification, the processing unit being operable to execute software routines. A debugger signal interface controller is arranged to interface with the debugger and to perform one or more test actions transferring at least one of one or more stimulus signals and one or more response signals between the debugger and the debugger signal interface controller during performance of the sequence of verification tests. A test manager coupled to the plurality of signal interface controllers and the debugger signal interface controller is operable to transfer test controlling messages to these interface controllers identifying the test actions to be performed. By this approach, the test manager is operable to control the operation of the processing unit via the debugger signal interface controller and the debugger in order to co-ordinate the execution of the software routines with a sequence of verification tests. This has been found to be a particularly efficient technique for performing hardware and software co-verification.

A method, test mode circuit and system for a combined write window and retention test for a memory device that is faster than techniques heretofore known. The combined write window and retention test procedure involves controlling time intervals during which wordlines are activated and deactivated and bitlines are grounded or connected to a bitline high voltage such that the wordlines are activated while bitlines are either grounded or at the bitline high voltage. During a first time interval after the wordlines are activated a first value (e.g., 0 V) is written to storage cells associated with the activated wordlines. During a second time interval after a second activation of the wordlines, a second value (a non-zero logic “1” V) is written to storage cells associated with activated wordlines. The second time interval has a duration that establishes write window test conditions. After expiration of a third time interval corresponding to a retention time interval, the storage cells are read and a determination is made whether a storage cell has passed or failed a combined write window and retention test based on a value read from the storage cell.

Susceptibility of sessile microorganisms to antimicrobial agents is tested with a method comprising growing the microorganisms on a support to form a biofilm, contacting the biofilm with a metabolic substrate having a chromogenic and / or fluorogenic moiety to continue a base-line metabolic activity of the biofilm, contacting the biofilm with one or more antimicrobial agents, determining an experimental metabolic activity of the biofilm by measuring a signal from the metabolic substrate, and comparing the base-line metabolic activity with the experimental activity. The biofilm may be grown in a device comprising a plurality of wells, each well having a planar bottom and at least on wall, a plurality of supports comprising discs for growing the biofilm, each support disposed within a well perpendicular to the planar bottom, and at least one cover that fittably seals the top of each well.

The invention discloses a comprehensive test method of a small satellite power subsystem. In the method, a solar cell array is replaced by a solar matrix simulator; a ground wired test and control platform of a satellite comprehensive test system is used to transmit wired instructions and collect important parameters; and ground test and control equipment, a remote measurement and control front end and a test computer are used to transmit remote control instructions and collect remote test data. After the satellite is electrified, the on operation time, off operation time and remote control command transmission time of the solar matrix simulator are reasonably controlled, the working state of a power subsystem is set, various parameters and states are monitored and interpreted, and thus, various test items are accomplished. In addition, a method of injecting normal or fault data blocks and program blocks is adopted to test the up injection function, reliability and fault tolerance are tested. The method has high test coverage, clear and definite flow, simple and reliable operation and convenient construction.

Systems and methods are described that dynamically reprioritize test cases for Model-Based Testing (MBT) during test execution. Test case execution is prioritized according to their potential to detect uncovered failures within a design model.

A laminate comprising a solid electro-optic medium and an electrically conductive layer is tested by passing it over a pair of electrodes at different potentials, with the electrically conductive layer lying on the opposed side of the electro-optic medium from the electrodes. An article which can be tested by this method, and which is useful in the manufacture of electro-optic displays, comprises a layer of a solid electro-optic medium and a release sheet comprising an electrically conductive layer.

The invention provides an integrated frequency difference method of a cable stayed bridge cable tension test. The method comprises the following steps: firstly, reading three frequency values fi, fj and fk which are corresponding to a first peak, a second peak and a third peak in an auto-power frequency spectrum graph of a tested cable actual measurement acceleration time history; secondly, obtaining a fundamental frequency initial value f by utilizing the three frequency values corresponding to the three peaks; thirdly, determining a possible order corresponding to each frequency; finally, determining basic frequency fv and cable tension T. According to the invention, calculation is simple, operation is carried out according to a process, other complex determination and processing processes are not needed, result accuracy is raised, technology difficulty in a cable tension test is substantially reduced, by employing the method, high efficiency is realized, data analysis processing time can be saved, test cost is reduced, and economy is good.

A method monitors a weld signature of a welding apparatus by processing the signature through a neural network to recognize a pattern, and by classifying the weld signature in response to the pattern. The method determines if the weld signature is sufficiently different from training weld signatures stored in a database, and records the weld signature in the database when sufficiently different. The method tests a weld joint to determine values of different weld joint properties, and then correlates the signature with the weld data to validate the database. An apparatus monitors a weld signature during a welding process to predict welding joint quality, and includes a welding gun, a power supply, and a sensor for detecting welding voltage, current, and wire feed speed (WFS). A neural network receives the welding process values and classifies the signature into different weld classifications each corresponding to a predicted welding joint quality.

The invention discloses a method, a device and a system for testing an application program. The method comprises steps as follows: an interface where testing operation of the tested application program is executed, operation execution coordinates during execution of testing operation on the interface and a recorded picture corresponding to the operation execution coordinates are acquired on a first terminal; an interface picture acquired when the interface is operated on a second terminal is intercepted; the interface picture and the recorded picture are subjected to picture recognition, and operation playback coordinates corresponding to the operation execution coordinates in the interface picture are determined according to a picture recognition result; the testing operation is executed on the tested application program on an interface of the second terminal according to the operation playback coordinates. With the adoption of the method, the device and the system for testing the application program, the problem that a software testing result is inaccurate due to the fact that a record and playback method used for testing software in the prior art cannot adapt to terminals with different resolutions is solved, and the operation execution coordinates can be acquired accurately, so that the testing operation can be accurately performed on the second terminal, and an accurate testing result of the application program can be acquired.

Disclosed is a test cell and a method for detection of a preselected ligand in a liquid sample such as a body fluid. The test cell includes an elongate outer casing which houses an interior permeable material capable of transporting an aqueous solution and defining a sample inlet, a test volume, and a reservoir volume. The reservoir volume is disposed in a section of the test cell spaced apart from the inlet and is filled with sorbent material. The reservoir acts to receive liquid transported along a flow path defined by the permeable material and extending from the inlet and through the test volume. In the test volume is a test site which includes a first protein having a binding site specific to a first epitope of the ligand immobilized in fluid communication with the flow path. The test site can be observed through a window of the casing.

The invention relates to an electromagnetic shielding compound material made from three-dimensional braided nickel-plated carbon fiber and epoxy resin and a method for preparing same. The method comprises the following steps: carbon fiber surface treatment, carbon fiber nickel-electroplating, nickel-plated carbon fiber three-dimensional braiding, and compound material preparation on the basis of RTM (resin transfer molding) method and electromagnetic shielding effectiveness test. In the invention, the nickel-plated carbon fiber / epoxy resin braided compound material is prepared through the following steps: plating the carbon fiber with nickel, the metal; carrying out three-dimensional four-directional braiding; and then, compounding the nickel-plated carbon fiber braid and the epoxy resin. Owing to the good conductivity of the carbon fiber braid and the nickel-plated layer and the ferromagnetism of the nickel-plated layer, the braided compound material has good electromagnetic shielding performance. According to the test results based on the flange co-axial method, the electromagnetic shielding level of the braided compound material reaches 70dB to 80dB.

A method of testing an electronic device. A test pattern is transferred between a first data controller coupled to a first data interface and a second data controller coupled to a second data interface via an element coupling the first and second data interfaces. The test pattern is received and examined.

A compliant interposer sheet probe card and a method for testing a wafer or a wafer level package using the probe card are described. Test electronic circuits are connected on one side of a multi-layer substrate. A top side of a compliant interposer sheet is connected to an opposite side of the multi-layer substrate. A wafer or a wafer level package to be tested is contacted with pins on a bottom side of the compliant interposer sheet whereby the wafer or wafer level package can be tested.

The invention relates to an analysis and determination method of electromagnetic environment characteristics of a war vessel. Aiming at electro-magnetic compatibility moorage of the war vessel, according to the conduction and radiation electromagnet field spectra test data tested by the existing standard code method in running trial, after classified according to identical measuring point of war vessels of the same type, the field intensity bar diagram, subsection envelope, fitting in segment of spectra are performed thereafter to calculate the characteristic fitting curve and the expression. The statistical description quantity value is determined. The peak values and the average values of subsection envelope and characteristic fitting are calculated according to the segmental terminal frequency so as to obtain the maximal and the average envelope lines, and the fitting line of frame-frequency characteristics of electric field and magnetic field of various measuring points. The invention can express in quantification the frame-frequency characteristics of the electromagnetic environment test data of the war vessel so as to obtain the quantification expression mode of the electromagnet field frame-frequency characteristics in the critical area of the war vessel. The analysis and determination method provided by the invention provides reference basis for determining electromagnetic environment characteristics of the war vessel, and researching and modifying the national relevant standard limits.

Methods, test systems and computer-readable media are provided each relating to the collection of runtime data during code execution. This is accomplished without the need to reload the executable from its stored media image. The executable is instead altered while in memory, allowing program flow to be dynamically diverted without having to recompile the program, effect its binary, halt its execution, restart the program or otherwise change its fundamental behavior.

The invention relates to a system for testing the performance of an ISM (industry, science and medicine) frequency range communication product and a testing method, and in particular relates to a system for testing the performance of a communication product and a testing method, and the problem of low testing accuracy of the existing method for testing the performance of the ISM frequency range communication product is solved. In the system provided by the invention, N transmitters to be tested and a reference transmitter are accessed to a chain through a No.1 multi-way switch and connected with N receivers to be tested and a reference receiver after passing through an adjustable attenuator, a fixed attenuator, a combiner and a shunt; and an oscilloscope displays the waveform of each receiver. In the method provided by the invention, the performance detection of the ISM frequency range communication product to be tested is realized by testing the sensitivity of the receivers to be tested, the transmission power of the transmitters to be tested, the same-frequency interference-resistant performance of the receivers to be tested, the multi-address interference-resistant performance of the receivers to be tested and the high and low temperature-resistant performance of the product to be tested. The invention is suitable for testing the performance of the ISM frequency range communication product.

The invention provides a method testing and evaluating sound insulation property of a finished automobile based on a reverberation room. Stimulating sound pressure sources are arranged at random multiple positions inside the reverberation room. Sound pressure testers are arranged at multiple positions inside the sealed finished automobile. A sound pressure mean square value outside an automobile body inside the reverberation room is calculated to obtain a stimulating sound pressure. A sound pressure mean square value inside the finished automobile is calculated to obtain a receiving sound pressure. A difference between the stimulating sound pressure and the receiving sound pressure is a sound decay. Thus the sound insulation property of the finished automobile is judged.

The invention discloses an iron-based constant-permeability nano crystal magnetic core and a production method thereof. The magnetic core is made of iron-based alloy. The molecular formula of the iron-based alloy is FeaCubNbcSidBeMfXg, wherein M is at least one of V, Ti, Mn, Cr and Mo and X is at least one of C, Ge, P and impurities. The production method includes: thermally processing an amorphous alloy thin strip while applying tensile stress along the length direction of the strip; winding the strip to produce the magnetic core of a certain size. The method has the advantages that the magnetic domain structure and distribution in the strip during crystallization can be adjusted by adjusting the process parameters such as tension magnitude and temperature during thermal processing according to different components and final performance requirements so as to obtain the constant-permeability magnetic core, and the height of the permeability is adjustable under direct currents and alternating currents. In addition, the relative initial permeability of the magnetic core is 50-2000 under a direct current condition and by the aid of simulation impact method testing.

The invention discloses a vibration measuring method of engine speed by applying a four-point energy centrobaric correction method, which comprises the steps of: discrete-sampling a vibration acceleration signal on the surface of an engine block to obtain a time series; obtaining a frequency domain signal X1(f) through fast Fourier transformation of Zn(t); correcting the peak frequency fi of X1(f) by adopting a four-point energy centrobaric correction method, and obtaining a corrected frequency; obtaining a time spectrum signal ZZn(t) through carrying out self-related transformation and fast Fourier transformation on the frequency domain signal X1(f); correcting the time ti corresponding to the peak of ZZn(t) by adopting the four-point energy centrobaric correction method again, and obtaining the corrected time; and finding the accurate 1 / 2 harmonic frequency value of the rotating speed w of the four stroke engine according to the corrected frequency and time, and calculating the rotating speed w of the engine through a relational expression. The vibration measuring method of engine speed can solve the problem that the rotating speed of the engine cannot be detected when the number of engine blocks cannot be determined; and the method has the advantages of better universality, high noise-proof performance and accurate and reliable result.

The invention relates to a testing device for dielectric coefficient of liquid or solid powder matter and testing and calculating methods, characterized in that in the device microwave signal source (1) is connected to the inputting end of slotting coaxial measurement segment (4) by circulator (2) and double directional coupler (3); after it passes through tested matter reflecting wave Pr and transmitting wave Pt are generated; reflecting wave Pr is transferred to matched load (6) by the double directional coupler (3) and the circulator (2); transmitting wave Pt is sent to the matched load (6) by directional coupler (5); incident wave Pi and reflecting wave Pr coupled by the double directional coupler (3) and transmitting wave Pt coupled by directional coupler (5) sent to double-channel power meter (7) respectively at two ends of slotting coaxial measurement segment (4) are sent to computer (8) finally so as to form an integration. It is tested and calculated by the following method. Tested matter is set in the measuring container (12) and amplitudes of reflection coefficient S11 and transmission coefficient S21 are read in computer (8) as testing value for use. Based on testing result dielectric coefficient of tested matter is searched by finite value algorithm combined with genetic algorithm.

A distributed pressure testing system and method are disclosed, in which a test server transmits different test commands to corresponding test terminals so that the test terminals performing a pressure test on a unit under test according to the test commands, and the unit under test transmits the test result to the test server after the test server transmits a back-transmit request, so that the test server adjusts a pressure until the performance index meets up with the predetermined threshold parameter according to the test result. By means of the technical means of the present invention, an efficacy of increased test accuracy may be achieved.

The invention provides a method for predicting discharge capacity of a lithium ion battery through partial discharge process by a BP neural network. The terminal voltage of the lithium ion battery in the at least previous 10 minute constant-current discharge process is taken as input, and a BP neural network model outputs the discharge capacity of the battery. The method solves the technical problems of long test period and high energy consumption in the conventional industrial method, also overcomes the defect that a laboratory method has complicated steps and is not suitable for massive industrial production, and guarantees that the average forecasting error is about 2.0 percent which is less than the error range of about 5percent allowable in the industrial production.

A method in a dual-stage actuator disk drive tests if the secondary actuator has failed while the disk drive is in its normal track-following operating mode. The secondary actuator is removed from the control loop and the primary actuator maintains the read / write head on a data track in the track-following mode. The servo control processor generates a test signal to the secondary actuator and receives the position error signal (PES) as the read head detects the PES bursts in the data track being followed. The servo control processor calculates the response of the secondary actuator to the test signal by deconvolving the motion of the primary actuator from the PES. The calculated response is then compared with an expected response to determine if the secondary actuator has failed. The coherence function can be calculated to measure the statistical validity of the calculated secondary-actuator frequency response.

The invention discloses a method for detecting poor contact of battery voltage testing terminals, in particular to a technology for detecting the poor contact of voltage testing terminals, which is suitable for a rechargeable battery. Two ends of a voltage sampling circuit are connected with a test circuit capable of controlling on-off, and micro current is injected into the battery through a voltage test line of the battery; and then the voltage values of both ends of the anode and cathode of a voltage test line are respectively measured under the states of current switching on-off, no change of the voltage value shows good contact of voltage terminals, and the change of the voltage value shows that the voltage test terminals and the battery have contact resistance, i.e. the voltage test terminals have poor contact. The invention has good test effect, can easily detect the contact situation of the voltage test terminals, and can calculate the value of the contact resistance; and in addition, the method has small test current and short test time, and has no influence on the normal detection of the battery; and the test circuit for the method has simple principles and is easily realized.

An invention providing improvement in integrity testing of wire bonds between an IC die and a BGA substrate.The invention includes a BGA integrated circuit package comprising:1) a BGA substrate having conducting bond fingers and a grounded feature on a first side thereof; 2) an IC die electrically connected to the conducting bond fingers with wire bonds; the BGA substrate configured to be formed into a singulated unit with the IC die; wherein the BGA substrate does not have direct electrical connection on the first side thereof between the bond fingers and the grounded feature; 4) the BGA substrate including an indirect electrical connection pathway from each wire bond to the grounded feature that enables electrical integrity testing for the wire bonds; the indirect electrical connection pathway configured so that at least a portion of each indirect electrical connection pathway is not present on the singulated unit.The invention further includes a method for bonding an integrated circuit (IC) die to a BGA substrate, said BGA substrate configured to be formed into a singulated unit with said IC die, said method including testing electrical integrity of a wire bond between a) a bond finger on a first side of said BGA substrate and b) a bonding pad on said IC die, wherein said substrate does not have direct electrical connections on said first side between said bond fingers and a grounded feature on said first side; the method comprising the steps of:applying a voltage through said wire bond on said BGA substrate to said grounded feature, through an indirect electrical connection pathway at least a portion of which is not present on said singulated unit; andmeasuring if there is current flow through said pathway.The invention further includes an integrated circuit (IC) die mounted on and packaged with the BGA substrate, formed by a method comprising the steps of:making electrical connections between the IC die and the substrate, including forming bond finger wire bonds;testing the electrical integrity of each bond finger wire bond according to the method of this invention;forming a package mold on the substrate;attaching solder balls to the bottom side of the substrate; andsingulating the substrate.

Testing method by using the testing gateway structure under PPPoE+VLAN access mode includes such-steps as configuring parameters, executing initializing operation, and starting up control module of receiving and transmitting data packets and module of filtering data packets in the testing gateway; based on FC2516 protocol standard, carrying relevant processing for PPPoE detecting data packets, PPPoE session data packets and PPPoE expanded data packets from interface of testing host computer and interface of device to be tested. Based on PPPoE calling mode, mode of binding MAC address of testing host and PPPoE Host-Uniq Tag field combination is adopted in processing flow of testing gateway in order to distinguish PPPoE link and implement partition and configuration in VLAN. Under large capacity calling, flexible binding between VLAN and PPPoE can be realized.

The invention relates to a PECVD device of solar energy batteries of grown silicon base films and highly effective silicon base films and comprises a deposited cavity body, a gas controlling system, an electro-control system and a vacuum unit; wherein, the deposited cavity body consists of a growing cavity body (1) arranged at the middle position of the deposited cavity body, and in and out plate chambers (2) arranged at two sides of the growing cavity body (1); the in and out plate chambers (2) which are provided with movable doors which can be opened and closed by hand are provided with a plurality of plates of automatic loading and unloading frames of sample plates; four groups of parallel plate capacitive electrodes used in deposition are positioned in the growing cavity body (1) and each group of parallel plate capacitive electrodes consists of two upper and lower electrode plates which are arranged symmetrically, and baffles are arranged vertically between each group of parallel plate capacitive electrodes; the vacuum unit consists of a mechanical pump (3), a condensation filter (4) and a waste air treatment device (5); a PLC controller of the electro-control system controls the growing process of silicon base films and the solar energy batteries of silicon base films; the heterogeneity of the silicon base film prepared by the invention is less than 3 percent (tested and calculated by adopting the method of infrared transmission spectrum) and the converting efficiency of the solar energy batteries of silicon base films is more than 9 percent (testing light source: AM1.5; 1000W / M<2>).