333 results about "Direct test" patented technology

A test structure for testing graphical user interface applications (GAPs) modularizes test scripts by separating statements that define GAP test logic from statements that navigate to GAP objects. Composition rules weave the statements together to generate the test scripts that are executed to test the GAP. Because the test structure is modular, test logic can be reused across different GAPs and different versions of the same GAP. Reusing test logic is not only an efficient practice from a test engineer's point of view, but also leads to a reduction in test programming errors. The modular test structure also facilitates the efficient modification of test scripts to account for modifications in the underlying GAPs, greatly reducing the time, cost, and resource expenditures needed to arrive at updated test scripts.

Individual test executive sequences may correspond to individual sub-components of a hierarchical system. To test a system sub-component directly without testing “upper” sub-components in the hierarchy, a first test executive sequence corresponding to that system sub-component may be executed directly, without requiring execution of test executive sequences above the first test executive sequence in the hierarchy, or requiring only partial execution of test executive sequences above the first test executive sequence in the hierarchy. Another embodiment of the invention comprises a system and method for enabling propagation or inheritance of test executive sequence local variables.

The invention discloses a method suitable for directly testing and evaluating the quenching effect of an aluminum alloy material. The method comprises the following steps of: (1) cutting a quenching sample, filling a thermocouple into a characteristic position, and performing heat insulating treatment on the side face of the sample; (2) performing solution heat treatment on the treated sample and monitoring the temperature; (3) performing quenching tests under different quenching conditions and monitoring the quenching cooling speeds of the sample at different positions; (4) testing residual stress on the characteristic position, determining the tensile properties, hardness and electric conductivities of positions of different depth distances way from the quenching surface, drawing a curve and performing microstructure observation and analysis; and (5) determining an appropriate quenching process for practical material production according to a test result obtained in the step (4). In the invention, a sample heat insulating treatment method is adopted, and the temperature is monitored in real time with a thermocouple filling method, so that the practical quenching state of a material can be simulated directly and accurately, the consistence between the test result and a test result of a large-specification workpiece under overall quenching is high, and a quenching process suitable for practical production can be optimized and determined.

The invention relates to air conditioner technologies and discloses an air conditioner compressor tubing vibration reliability evaluation method. After compressor excitation is recognized, a simulation means is utilized to monitor stress at bending positions and a stress centralized part of a compressor during tubing vibration when all frequency points are in an operating state, and the problem that it is difficult to comprehensively detect tubing stress in a stress test is solved. The method comprises the steps that a, an air conditioner tubing vibration test is performed; b, finite element model system recognition is performed; c, compressor load recognition is performed; d, a response is calculated through simulation; e, response error analysis is performed; and f, tubing stress risk point recognition is performed. Through the method, it is not needed to directly test load excitation in the compressor, the load recognition technology is utilized to accurately calculate a load excitation value of the compressor, and then a stress value of the part difficult to monitor in the stress test is accurately calculated through the simulation means, so that the defect of the stress test is overcome, the air conditioner tubing fatigue crack risk is lowered, and tubing vibration reliability is improved.

The invention relates to a controllable mechanical seal device, in particular to a controllable mechanical seal based on closing force change. The controllable mechanical seal comprises a stationary ring seat, an electromagnetic loading device mounted on the stationary ring seat as well as a friction torque sensor unit and a U-shaped plug which are arranged on the electromagnetic loading device. The principle of the controllable mechanical seal is that the mechanical seal is controlled by the electromagnetic loading device capable of changing closing force. According to the scheme, a method for directly testing friction of a seal face and the seal face temperature rising is provided and applied to the controllable mechanical seal device; the seal is actively controlled by controlling the current change of the electromagnetic loading device; and the controllable mechanical seal can be used for related engineering fields such as aerospace, petrochemical engineering, energy power and the like and can be used in engineering equipment such as pumps, compressors, reaction kettles, expansion machines, separators and the like.

The present invention discloses a deep borehole rock body deformation testing device with hand hydraulic pump connected with a pressure gauge and a high-pressure oil tube; two high-pressure oil tube are respectively a load applying course oil tube and a return journey oil tube, the load applying course oil tube is connected to the course piston interface of the hole drilling rock body deformation tester; and the measuring cable is connected with the hole drilling rock body deformation tester and the digital number reading device. The hole drilling rock body deformation tester is composed of four pistons, three displacement transducers, a displacement transducer amplifier, two force measuring sensors, a force measuring sensor amplifier, a detachable active rigid bearing plate, a detachable passive rigid bearing plate, a protective barrel and a circuit protecting barrel; the device has the advantages of high measuring precision, good coupling capacity to the hole drilling wall, directly measuring the deformation modulus value and elasticity modulus value of the deep rock body, simple structure, easy operation, stable testament and accurate data.

A chip test system including a probe card, a chip tray and a cover plate fastened on the chip tray. The chip tray comprises a socket, a chip contact area, an extension contact area, and an alignment contact point. The socket loads the testing chip and is customized for the tested chip. The chip contact area has a plurality of chip contact points to electrically contact the chip. The extension contact area has a plurality of extension contact points corresponding to the chip contact points to direct test signals into the chip and direct feedback signals out of the chip. The alignment point provides an alignment location for the probe card during the chip test.

The invention discloses a system and a method for testing laser frequency noise power spectrum density based on a Mach-Zehnder interferometer. A laser central frequency is locked at an orthogonal point of an interference curve of the Mach Zehnder interferometer through a feedback loop, so the system works in a good linearity range, converts laser frequency noise into light intensity, and fulfillsan aim of performing direct test through an electronic frequency spectrograph; and a frequency observation point avoids 1/f noise of the test system through the frequency shift by an acousto-optic frequency shifter. The invention provides the stable testing method which is used for testing laser frequency noise power spectrum density, is applied to an electronic frequency spectrograph, provides ameans for analyzing the influence of laser frequency noise on an optical system, and has significant scientific meaning and application value.

A network testing system for a device under test (DUT) uses a test tool to generate test packets provided to the DUT as source traffic and to receive the test packets back from the DUT as destination traffic. Before the test packets are returned from the DUT to the test tool, an external router receives the test packets from the DUT and forwards them back to the DUT. The DUT has a first pair of DUT interfaces coupled to the test tool and a second pair of DUT interfaces coupled to the external router. The DUT has a first virtual router with a first routing table configured to direct test packets received on one of the interfaces in the first pair of DUT interfaces to the external router. The DUT has a second virtual router with a second routing table configured to direct test packets received on one of the interfaces in the second pair of DUT interfaces to the test tool. Thus, test packets output by the test tool traverse the DUT more than once before returning to the test tool.

The invention relates to a method for evaluating the battery material of a lithium ion battery by using a symmetric battery, and belongs to the technical field of lithium ion batteries. The method forevaluating the battery material of the lithium ion battery using the symmetric battery comprises the following steps: 1) disassembling the lithium ion battery to obtain pole pieces, and taking and assembling the pole pieces with the same polarity to form the symmetric battery; 2) performing electrochemical test on the symmetrical battery obtained in step 1); and 3) evaluating the battery materialaccording to an electrochemical test result obtained in step 2). The method for evaluating the battery material of the lithium ion battery by using the symmetric battery can accurately test the performances of the pole material, in different states, of the total lithium ion battery in order to prevent no direct test of the performances of the pole material in different states due to the influences of the surrounding environment.

A method and apparatus is disclosed herein for automated testing of an application. A processing system executes the application using test input values that are generated for testing the application with respect to a property of interest. During execution, constraints among symbolic variables of the application are collected. Property state is collected and is used to determine whether a branch in the application is relevant to the property. Based on the collected constraints and branch relevancy, new test input values are generated. The process is repeated until all paths in the application corresponding to relevant branches have been explored.

The invention relates to a wave-front measuring instrument of a collimation deflection beam and a measuring method thereof, relating to the wave-front measurement of a collimation deflection beam in the optical field. The measuring instrument comprises a beam deviation device and a hearing interference light path, wherein the beam deviation device comprises a reflector and an electric combined platform controlled by a computer. The measuring method comprises the following steps: using a stripe generated by a collimation laser through the measuring instrument as a reference stripe chart; setting the action parameter of the combined platform by the computer according to the deflection angle of a beam to be measured; controlling the reflector to rotate and translate to change the propagation direction of the beam into a direction perpendicular to the translation direction of the combined platform; measuring a distorted stripe chart; and calculating the wave-front distribution of the deflected beam at an incidence hole according to a stripe-processing algorithm. By adding a device capable of changing the propagation direction of the deflected beam on a basis of a radial shearing interferometer in the quadrilateral structure, the invention can conveniently and rapidly measure the wave-front distribution of the collimation deflection beam and solve the problem that the traditional instrument can not directly measure the wave-front distribution of the collimation deflection beam.

The invention discloses an exercise test scheme and a calculation method for a cardiopulmonary function, and belongs to the field of health assessment. A maximal oxygen uptake is a key assessment index of aerobic exercise ability and a core index to reflect an exercise cardiopulmonary function; moreover, in all-cause death attribution analysis, a low cardiopulmonary function is an all-cause death factor ranked first and therefore the assessment on the exercise cardiopulmonary function is very necessary; however, to directly test an oxygen uptake, a very precise instrument is required; and the equipment is expensive and therefore cannot be applied in the field of public fitness. In the method, by researching the shortages of a previous method in depth, an incremental load scheme that measures the maximal oxygen uptake under a secondary high intensity exercise is formulated; on the basis of observing a heart rate reaction after a small-load (25W) excise, a load at a second level is determined; and meanwhile, in a stage of an open test, effective data can be guaranteed to be collected; and based on this, according to a result obtained by the test, a new calculation method for the maximal oxygen uptake is provided; and the method of multipoint regression is adopted, so the error caused by heart rate fluctuation in previous two-point calculation is greatly reduced.