194 results about "Test segment" patented technology

A method for named-entity (NE) recognition and verification is provided. The method can extract at least one to-be-tested segments from an article according to a text window, and use a predefined grammar to parse the at least one to-be-tested segments to remove ill-formed ones. Then, a statistical verification model is used to calculate the confidence measurement of each to-be-tested segment to determine where the to-be-tested segment has a named-entity or not. If the confidence measurement is less than a predefined threshold, the to-be-tested segment will be rejected. Otherwise, it will be accepted.

A method for testing a packet data signal transceiver via its packet data signal interface. The packet data signal interface is used to convey test packet data signals from the test equipment to the DUT, and response packet data signals responsive to such test packet data signals from the DUT to the test equipment.

A 2-m-maglitude free-piston-driven high-enthalpy shock tunnel comprises a high-pressure gas storage chamber, a piston launching mechanism, a piston, a compression tube, a piston stop mechanism, a maincapsule mechanism, a shock wave tube, a small capsule mechanism, a spray tube, a test segment, a track and a support system. The high-pressure gas storage chamber is arranged at the upstream of the piston launching mechanism and stores high-pressure air. After being launched through the piston launching mechanism, the piston may move to the downstream of the compression tube at increased speed; when the piston arrives at the tail end of the compression tube, most energy is transmitted to helium-argon mixed light gas, and high-temperature high-pressure gas is generated; at this moment, a membrane of the main capsule mechanism breaks, incoming shock wave is generated and passes through the shove wave tube until its tail end, the shoe wave may be reflected, and high-temperature high-pressuregas is generated to cause breakage of a membrane of the small capsule mechanism. The high-temperature high-pressure test gas passes through the spray pipe to the test segment, and free stream conditions required are acquired.

The present invention provides an apparatus and a method for testing one or more electrical components. The apparatus and method execute similar portions of a test segment on a known device, i.e., a device for which it has been determined that the test segment executes successfully, and on a device-under-test (DUT), i.e., a device for which it has been determined that the test segment does not execute successfully. The results of the tests are compared to determine if the test passed or failed. The test segment is executed iteratively on the known device and the DUT, increasing or decreasing the amount of the test segment that is executed each pass until the failing instruction is identified.

The invention relates to a correction and test system for the miss distance of a large target surface. The correction and test system comprises a first photoelectric detection target, a second photoelectric detection target and a timing and image collecting instrument, wherein the first photoelectric detection target and the second photoelectric detection target are adjacently arranged on a test segment of a ballistic range in the direction of gun firing, the two photoelectric detection targets are respectively connected with the timing and image collecting instrument, and the timing and image collecting instrument is connected with a computer. Five intersection awning space geometry arrays produced by the two photoelectric detection targets are utilized for achieving measurement of target speeds, flight angle vectors and coordinates.

A hypersonic speed wind-tunnel nozzle outlet segment water cooling device provided by the present invention comprises a water joint, an outer shell, an inner shell, a block and a water bar. The cooling water of the water cooling device flows in an interlayer between the outer shell and the inner shell of a nozzle outlet segment directly from the water joint outside a wind tunnel test segment, returns at the tail end of the nozzle outlet segment, and flows out from the water joint, so that the cooling water forms the circulation inside the nozzle outlet segment. According to the present invention, a water pipe does not need to be connected between the tail end of a wind tunnel nozzle segment and the wind tunnel test segment to form a water return pipe, so that the water cooling device is not correlated with the wind tunnel test segment. A wind tunnel nozzle can be replaced by just disengaging the wind tunnel nozzle from the test segment directly without needing to disassemble the water return pipe, so that the water cooling device has a very high replacement operation efficiency, and the situation that the cooling water leaks to the test segment when the wind tunnel nozzle is replaced, is avoided. Meanwhile, a cooling unit which is easy to process and is used for restraining the flow of the cooling water is arranged in the interlayer, so that the cooling water flows in the interlayer more evenly, and the nozzle outlet segment can be cooled very well.

The invention discloses a test method of a stretching stress-strain curve of a ceramic matrix composite material, and belongs to the technical field of inorganic non-metallic materials. The method comprises the following steps: preparing a ceramic matrix composite sheet material test piece, clamping the test piece with upper and lower chucks of a tension tester; mounting a deformation measuring device on a test section of the test piece, connecting the device with the computer of the tension tester; controlling the lower chuck of the tension tester to move downwards so as to allow the test piece to bear minimal pulling force; testing a stress-strain curve in a displacement control loading mode and by a loading and unloading mode; processing the test piece strain data and the force measured by a force sensor of the tension tester to finally obtain the stress-strain curve of the test piece. The test method of the invention effectively prevents the problem that the test piece is fractured too early due to stress concentration and the stretching stress-strain curve cannot be tested; the test method adopts routine test equipment, has low requirements for processing precision of the test piece and the clamps, is high in test success rate, and is easy to realize.

A preemptive reloading technique is employed in a test program generator. Initialized resources are reset with needed values by reloading instructions. The actual reloaded value is chosen later, when the instruction that actually needs the value is generated. The test program generator distances the reloading instruction from the instruction that actually needs the value, thus making it possible to avoid fixed test patterns and to generate interference-free test segments during design verification.

The invention relates to a beam component bending and torsion combined load test device and method. The beam component bending and torsion combined load test device comprises simply support and torsion combined supporting seats and combined loading components, wherein the simply support and torsion combined supporting seats are mounted at two ends of a beam component sample, a part with certain length in the middle area of the sample is taken as a testing section, and the combined loading components are arranged at the testing section. Specifically, two horizontally reversed loading arms are mounted at two ends of the testing section respectively, and free ends of the two loading arms are fixedly connected through a distributing beam. During testing, pressure is applied to the middle of the distributing beam, so that the sample is bent; and the distributing beam averagely distributes and transfers the pressure to the free ends of the two loading arms, and accordingly, two ends of the testing section of the sample relatively perform reverse torsion. According to a measured torsion angle, bending deflection and pressure load, a bending moment and deflection curve and a torque and turn angle curve under bending and torsion combined loading of a beam component can be obtained. According to the device and the method, bending and torsion combined loading of the beam component can be realized only by applying one pressure load, boundary conditions are ingeniously and reasonably set, parameter measurement is intuitive and convenient, and testing data are accurate.

A method for determining bandwidth capacity of a test segment by sending one or more short packet bursts or streams from unique source smart nodes (SNs) over a link, which has the test segment, to one or more destination SNs. Selected source SNs send packet bursts or streams to other selected SNs at precise times so that the packet bursts or streams traverse the test segment simultaneously. Analyses of the traffic flow patterns at the destination SNs, including byte count measurements and time stamps, are used to determine the bandwidth capacity of the test segment.

The invention relates to an anti-permeability performance test system for shield tunnel segment circumferential seams. The system comprises a segment test piece positioned in a frame and used for an anti-permeability performance test of the circumferential seams, a water pressure loading assembly including a water supply tank, a hydraulic press, and a water storage tank with a scale connected in sequence via a water pipe, and an observation record sub-assembly including a laser displacement sensor and digital close-range photogrammetric equipment. According to the system, a conventional segment joint mechanical performance test system is employed for loading, a water-resistant performance test of the shield tunnel lining segment circumferential seams is accomplished, the stress and deformation states of the shield tunnel circumferential seams in the practical condition are accurately simulated, the waterproof capability of the shield tunnel circumferential seams in conditions of different opening amounts, dislocation amounts, and opening angles is tested, quantitative reference basis is provided for the seam waterproof fine design of tunnel engineering, the consistency of the manufacturing precision of test segment members and actual tunnel segments and the accuracy of test data are guaranteed, the machining cost of a steel die of the test piece is reduced, and the test time is reduced.

The invention relates to a blade-cut-in type soft soil multi-point displacement meter anchor head comprising a middle shaft rod, an external rod, an upper frame, a lower frame, a spring tube, a transmission rod and an anchoring cutter. The external rod sleeves the upper portion of the middle shaft rod, the bottom of the external rod is connected to the upper frame, the bottom of the middle shaft rod is connected to the lower frame, the spring tube sleeves the lower portion of the middle shaft rod, the upper end of the spring tube is connected with the upper frame, the lower end of the spring tube is connected with the lower frame, one side of the transmission rod is hinged to the upper and lower frames, the other side of the transmission rod is hinged to the anchoring cutter, the middle shaft rod is provided with a segment of spiral structure, and the inner side of the upper frame is provided with a nut structure; when the middle shaft rod rotates, the spring tube stretches to drive the lower frame to bounce upwardly so as to drive the transmission rod to extend out the anchoring cutter into the tested-segment drilling hole wall soil. Compared with the prior art, the blade-cut-in type soft soil multi-point displacement meter anchor head has the advantages that the blade-cut-in type soft soil multi-point displacement meter anchor head can be used for measuring different ground settlement in a soft soil area and providing ground settlement monitoring data for foundation pit engineering and underground engineering.

The invention provides an energy-saving environment-friendly layout of a large-scale routine hypersonic wind tunnel. The system comprises a gas tank, a heater, a stabilization segment, a jet pipe, a test segment, an ultra-expanding segment and a heat exchanger, wherein the stabilization segment, the jet pipe, the test segment and the ultra-expanding segment are successively connected to form a major test wind tunnel assembly, the heat exchanger comprises an intermediate channel and a peripheral channel encircling the intermediate channel, an outlet of the ultra-expanding segment communicates with the intermediate channel of the heat exchanger, the gas tank communicates with the peripheral channel of the heat exchanger, and high-pressure gas in the gas tank is sent into the heater via the peripheral channel of the heat exchanger by means of a gas pipeline, then is sent into the stabilization segment after passing through the heater and is discharged through flowing through the intermediate channel of the heat exchanger after being tested in the major assembly of a test wind tunnel. According to the invention, energy consumption is reduced, the operation cost is decreased, at the same time, the influence on the environment is reduced, and the problems of large exhaust noise and waste of afterheat of a conventional hypersonic wind tunnel can be solved.

A laboratory test for general tire durability can produce results comparable to the GM-ATE road test. A passenger tire is mounted in a test machine and run at approximately 50 mph (80 kph), at maximum rated inflation pressure, with at least 100% maximum rated radial load, with approximately 25% of the test duration being performed with lateral force comprised of approximately equal portions of right and left steering, the remainder of the test being performed without lateral force (straight portions). A test segment comprises repeating a loading cycle a plurality of times until approximately 5000 miles have accumulated, and multiple test segments are performed until 16,000 miles have been accumulated. The test is paused and the tire is visually inspected several times during the test segments, including at the end of the test.

The invention belongs to the technical field of oil production of oil fields, and particularly relates to a high-water-content horizontal well tracer injection water exploration process and a string. The process includes: determining tracers according to fluid properties of a tested well, and screening out the tracers different in characteristics and mutually incompatible according to the number of test segments of the tested well; respectively calculating consumptions of different tracers injected into the formation; sequentially injecting the different tracers into all the intervals through a dual-seal single-clamp string, pulling out the injection string after all the intervals are injected; lowering down a production string, lifting formation fluid to the ground, sampling and testing on the ground, detecting the content and concentration of the different tracers in output liquid, and judging a water production interval according to the detected structure.

The invention discloses a Gobi integrated environment wind tunnel simulation device applied to the field of environment wind tunnel simulation equipment. The Gobi integrated environment wind tunnel simulation device comprises a power segment, a snow segment and a test segment arranged in sequence; a fan is arranged in the power segment; a snow generator is arranged in the snow segment; a sand generator is arranged at an entry of the test segment; the lower wall of the test segment is provided with a rotary table that bears an experimental model; the upper wall of the test segment is provided with a rainfall device and a plurality of solar radiation lamps. Much of current environment wind tunnel experimental devices refer to fluid mechanics researches in the aircraft or aerospace field, andthere are scarcely no simulation devices for Gobi integrated environment wind tunnels. As Gobi is a terrain of certain converge in the territory of China, simulation researches on Gobi integrated environments are of significant practical guidance on running and flight of automobiles and unmanned aerial vehicles in Gobi. The Gobi integrated environment wind tunnel simulation device can function tosimulate Gobi experiencing sandstorm, blizzard, windstorm and high-solar-irradiation environments.

The invention provides a variable Mach number nozzle for a hypersonic low-density wind tunnel. The variable Mach number nozzle comprises a throat segment and a diffuser segment. The throat segment is connected with a front chamber through bolts; the throat segment is connected with the diffuser segment through bolts. The diffuser segment comprises a conical segment, a sliding support and an expansion joint. The diffuser segment is connected with a test segment through the expansion joint and extends into the test segment. The sliding support is mounted under the conical segment and can drive the diffuser segment to axially move back and forth. The sliding support is fixed on a wind tunnel factory foundation. The throat segments of different profiles can be changed through a back-forth movement of the diffuser segment, leading to different Mach numbers; before changing of the nozzle Mach number, compression of the expansion joint between the diffuser segment and the test segment is adjusted to allow the diffuser segment to axially move back and forth by 10-30mm through the sliding support, and smooth changing of the throat segment is guaranteed. The variable Mach number nozzle is simple in structure, lower in diffuser segment manufacturing cost and lower in equipment cost.

The invention provides a test piece for testing the uniaxial tensile property of fiber reinforced concrete and a test method thereof. The test piece is bone-shaped, and comprises clamping sections attwo ends, a middle test section and a force transmitting section, wherein the clamping sections are in a streamline form. The test method comprises test piece forming, demoulding, tensile test preparation and experimental data recording, wherein the test piece is poured in a molding cavity defined by two side plates, two end part clamping molds and a bottom forming template, during demoulding, thetest piece is taken down together with the clamping molds, and the clamping molds are connected with the testing equipment. According to the testing method provided by the invention, the clamping molds and the test piece integrally formed, the test piece and a clamping fixture are good in contact embedding degree, a stress concentration phenomenon is not easy to occur, force transmission is uniform, and the test piece can be directly installed on test equipment to be quickly and effectively tested; the test piece is bone-shaped, the sections thereof are in smooth transition, uniform stress and force transmission are achieved, fracture at a position outside the test section is reduced, and the test success rate is high.

The invention discloses a low Mach number system of a trisonics wind tunnel, and mainly aims at expanding the M number range of wind tunnel test and enhancing the test capability of the wind tunnel. The system comprises a gas source, a main pipe, a main pressure regulating valve, a jet pipe, a test segment and an expansion segment, the main pressure regulating valve is mounted on the main pipe which is connected between the gas source and the jet pipe, the main pipe is provided with a bypass which communicates the front with the back of the main pressure regulating valve, the bypass is provided with a baffle plate with holes and a side valve, and the baffle plate with holes is placed in the upstream of the side valve. Thus, the M number of a blowdown wind tunnel extends downwardly and is better connected to the M number of the low speed wind tunnel test, and requirements for test of more models can be met.

The invention relates to a solid-liquid slurry density measurer and a measuring method. The differential pressure type density measurer comprise a horizontal pipeline differential pressure transmittermounted in a horizontal pipeline test segment and a vertical pipeline differential pressure transmitter mounted in a vertical pipeline test segment. The signal output terminals of the horizontal pipeline differential pressure transmitter and the vertical pipeline differential pressure transmitter are accessed to a computer through a programmable logic controller (PLC). The differential pressure type density measurer and the measuring method can realize accurate and reliable measurement, and the measurer has simple structure, convenient manufacture, installation and maintenance, low cost and environment protection.

The invention provides a portable underwater vehicle. The underwater vehicle is characterized by comprising a head housing, a side sweep segment housing, an electric control segment housing, a test segment housing, a Doppler segment housing and a tail segment housing which are independent and connected in sequence; the head housing constitutes a streamlined contour structure of an underwater vehicle body; at least one gripper is disposed on the outer circumference of the side sweeping segment housing and used for conveniently holding the underwater vehicle body; the electric control segment housing is internally provided with a battery pack for assembling power supply and an electrical control circuit board for navigation; the test segment housing is provided with a mounting structure formounting each antenna outlet port; a Doppler velocimeter is disposed in the Doppler segment housing and used for measuring an absolute speed of the underwater vehicle relative to the bottom of water;a power assembly is disposed in the tail segment housing and used for controlling the running speed and motion posture of the underwater vehicle. The portable underwater vehicle has the advantages ofsmall caliber and low weight.