116results about How to "Improve the test environment" patented technology

The present invention relates to circuitry and a method for providing data security, which circuitry contains at least one processor and at least one storage circuit. The invention is based on the idea that circuitry is provided in which a processor is operable in at least two different modes, one first secure operating mode and one second unsecure operating mode. In the secure mode, the processor has access to security related data located in various memories located within the circuitry. The access to these security data and the processing of them need to be restricted, since an intruder with access to security data could manipulate the circuitry. When testing and / or debugging the circuitry, access to security information is not allowed. For this reason, the processor is placed in the unsecure operating mode, in which mode it is no longer given access to the protected data.

The invention discloses a testing system and a method for electric part of power system for weak hybrid electric vehicle, and the system comprises a BSG motor module provided with a BSG motor and a BSG motor controller; a dynamometer module provided with a dynamometer, a measuring and control instrument and a torque and speed sensor, and a transducer or an inverter; a power module provided with a power storage battery, a battery management system, a program control power supply and a program control power supply controller; an auxiliary electric system load simulation module provided with a DC / DC convertor and an auxiliary electric system load; an upper computer module. The method adopts the half object simulation principle, the dynamometer simulates the engine for doing test to the BSG motor module and does the service life test for the electric part of weak hybrid power system at different working conditions that the BSG motor starts the engine, the engine drives the BSG motor for generating, regenerative braking, idle parking while the battery drives the load, the system and method can reduce the test cost, shorten the test period for vehicle performance and raise the developing speed for product.

An emulation test bench for vehicle operating of rail locomotive based on differentia transmission is composed of a plurality of test units each having the structure as follows: a driving mechanism is connected with a left and a right rollers, which are supported on a left and a right U-shaped frames which are mounted on the inner walls of the left and right roller bases through vertical linear bearings on the side walls thereof; the left and right roller bases are mounted on a base, on which the bottoms of the left and right U-shaped frames are connected through a vertical hydraulic vibration exciter; the external ends of the left and right roller shafts are connected with a transverse hydraulic vibration exciter which is fixed on the base; and the left and right roller bases are mounted on the base through a revolving bearing and is connected with a revolving vibration exciter thereof. The test bench can simulate the motion of locomotives on railways, the smooth operation state of locomotives, perturbations on the lines irregular vertically and transversely and bended laterally and transversely, and the moving sate of locomotives on curved lines.

The invention relates to test device of a vertical structure model of a shield tunnel. The test device comprises a counterforce frame, end constraint pieces, loading pieces and data acquisition equipment. The end constraint pieces and the loading pieces are arranged on the counterforce frame, a shield tunnel mode is fixed on the end constraint pieces, the loading pieces apply load above the shield tunnel model to enable the shield tunnel model to deform, and the data acquisition equipment is connected with the shield tunnel model to acquire and process deformation data. Compared with the prior art, the test device is tunnel structure stress simulation, changes the idea that a tunnel is buried inside a rock-soil body in a traditional model test, is convenient and fast to assemble and disassemble, small in occupied area and space, and accurate in measuring data.

The integrated circuit aging test apparatus of the present invention comprises a high temperature test chamber for heating a test device, aging test boards for performing aging test, an integrated circuit board for controlling each aging test board, a signal generator for emitting an excitation signal, a power supply control board for providing adjustable DC voltage, a signal detector for detecting aging input and output signals, an aging power supply for supplying the required voltage to the aging test boards, and a controller for controlling the aging process. The high temperature test chamber includes a box body and a temperature controller; the box body includes a test device loading area for placing the test device, a control cavity for mounting the power supply control board and thesignal generator, and a power supply placement cavity for holding an aging power supply; and the aging test boards are mounted in the test device loading area of the box body. The invention has the advantages of high signal quality and good high-fidelity integrity of the long-distance transmission signal.

Embodiments of the invention provide a semiconductor chip and a semiconductor chip package comprising a semiconductor chip. In one embodiment, the invention provides a semiconductor chip comprising a memory cell array, a control circuit, and a chip selection signal generating circuit electrically connected to first and second option pads. In the semiconductor chip, the chip selection signal generating circuit is enabled in accordance with a dual chip enable signal, and the control circuit is enabled and disabled in accordance with the chip selection signal received from the chip selection signal generating circuit. In addition, the chip selection signal generating circuit is adapted to generate a chip selection signal in accordance with signals received through the first and second option pads, respectively.

The invention provides a method for detecting the bottom outline of a contact plug, comprising the following steps of: providing a wafer, wherein the wafer comprises a semiconductor substrate with an active region, a first dielectric layer on the semiconductor substrate, the contact plug passing through the first dielectric layer and electrically connected with the active region, a second dielectric layer formed on the first dielectric layer and the contact plug, and a metal layer passing through the second dielectric layer and electrically connected with the contact plug; removing the metal layer and the second dielectric layer; removing a part of the first dielectric layer in a manner of dry etching; removing the contact plug so as to form a detection sample wafer; and using a scanning electron microscope to detect the detection sample wafer. In the invention, a clear picture of the bottom outline of the contact plug can be obtained by using the scanning electron microscope, and a precise detection result is obtained.

The invention, which relates to the technical field of power electronics of the fuel cell vehicle, discloses a testing system for a DC-DC converter of a fuel cell vehicle. The system comprises a boost type DC-DC converter, a buck type DC-DC converter, a low-voltage storage battery group, a high-voltage storage battery group, a pre-charging and protection circuit, and an upper computer communication network. The boost type DC-DC converter and the buck type DC-DC converter form an energy cycle system. The low-voltage storage battery group and the high-voltage storage battery group adjust a step-up ratio and a step-down ratio of the DC-DC converters stably. The pre-charging and protection circuit is used for realizing pre charging of internal capacitors of the DC-DC converters and over-current protection on the testing system. The upper computer communication network controls and monitors the states of the DC-DC converters. According to the system, various working states of the boost type DC-DC converter and / or the buck type DC-DC converter in the fuel cell vehicle power system can be tested flexibly and comprehensively; only a few energy losses are caused; and functional and economic requirements of the DC-DC converter testing system are met.

The railway vehicle running simulation test bench comprises several testing units with each composed of drive mechanism connected with left and right rolling wheel supported on the left and right U shape frame that installed on the inner wall of the left and right rolling wheel base through the vertical linear bearing of the side wall, with the right and left rolling wheel installed on the base, left and right U shape frame's bottom connected to the base through the vertical hydraulic vibrator, outer ends of the right and left rolling shafts connected with the horizontal hydraulic vibrator that fastened on the base, the right and left rolling base installed on the base through revolution axis and connected with their own revolution vibrator. It can simulate the running of vehicles on the railway with all kinds of uneven road surface.

The invention relates to a finance trade simulation testing method, which includes: build a simulated finance trade internet environment and use POS center background simulation system software to test the finance POS apparatus more effectively and conveniently. The method can be widely used for developing and testing finance POS terminals such as finance tax-controlled cashier and various business POS machines.

The invention discloses a testing device for the electrical characteristics of a rock sample in a multi-field coupling state. The testing device comprises a resistivity test module, a stress test module, a seepage test module, an upper test probe and a lower test probe. The resistivity test module comprises a direct-current electric method instrument and a plurality of annular electrodes wound around the rock sample to be tested in a layered mode, and the annular electrodes are connected to the direct-current electric method instrument through a direct-current electric method instrument optical cable. Insulating protection layers are arranged on the upper end face and the lower end face of the rock sample to be tested respectively, gaps into which the upper test probe and the lower test probe stretch respectively are formed in the insulating protection layers respectively, and insulating fixing plates are arranged on the outer circumferential surface of the rock sample to be tested. The stress test module comprises a pressure device and a stress sampling device. The seepage test module comprises a high-pressure water inlet system which is communicated with a water inlet hole in the upper test probe, a water outlet is formed in the lower test probe, and a water flow meter is arranged in the water outlet. The invention further discloses a testing method using the testing device. The testing device is simple in structure and convenient to operate.

The invention discloses a real-time dynamic monitoring test device for water regimen of a mining working surface. The test device comprises a square transparent container, wherein symmetric partition slots are longitudinally formed in corresponding inner side edges of the container, different baffle plates are inserted into the partition slots to combine a closed region, the closed region is filled with a similar working surface rock mass prepared from a similar material, a complete rubber bag, a plurality of electrodes and a plurality of stress sensors are embedded into the similar working surface rock mass, and the rubber bag is connected with an air pipe extending to the outside of the rock mass; the plurality of electrodes are connected to an electric cable through wires, and the electric cable is connected with an electrical instrument outside the similar working surface rock mass; the plurality of stress sensors are connected with a display device outside the similar working surface rock mass through wires; the direct current electrical instrument and the display device are connected with an early warning device. The invention further discloses a test method adopting the test device. According to the test device and the test method, the similar material simulation of the mining working surface can be realized, and the water regimen dynamic change in the working surface mining process can be monitored in real time.

The invention discloses a USB signal testing fixture. The USB signal testing fixture comprises a circuit board, wherein the circuit board is provided with a port facing upwards, a plurality of USB concentrator chips, a port facing downwards, a power supply port and a clock generator, wherein the port facing upwards is used for receiving an input signal, the USB concentrator chips are sequentially connected in series and are used for converting the input signal into a plurality of output signals which are the same as the input signal, the port facing downwards outputs the signals transmitted by the USB concentrator chips, the power supply port is used for providing equipment working voltage, and the clock generator is used for making a plurality of ICs work in the same timing sequence. Due to the fact that the integration of USB concentrators is achieved, USB signal testing fixture can conveniently and accurately measure the quality of USB signals after the USB signals are transmitted in a multi-stage mode.

The invention relates to a microgravity effect ground simulation method based on magnetic-fluid mixed floating. The technical feature is that: based on the buoyancy of liquid, a mixed suspension mode of electromagnetic and liquid floating is used to provide means for accurately simulating space microgravity effects. Among them, most of the gravity of the object is overcome by the buoyancy of the liquid (coarse trim), and the remaining very small part of the gravity is overcome by fine-tuning the electromagnetic force (fine trim), so as to achieve the purpose of precise trim. At the same time, the adjustment of the levitation height of the object under the microgravity effect simulation environment controls the magnitude and direction of the electromagnetic force by controlling the current intensity or other electromagnetic field parameters, so as to realize the arbitrary change of the levitation height and position of the object under the weightlessness effect.

The invention discloses a dynamic simulation system applying two-stage DC voltage for a hybrid DC power grid. The dynamic simulation system comprises a converter station based on a current source type converter and a converter station based on a voltage source type converter (VSC), wherein the converter station based on the current source type converter comprises a rectification converter station and an inversion converter station, one end of the rectification converter station is connected with a power transmission side AC power grid, the other end of the rectification converter station is connected with a DC power grid, one end of the inversion converter station is connected with the DC power grid, the other end of the inversion converter station is connected with a dynamic simulation AC power grid, the converter station based on the VSC comprises a power generator side VSC converter station and a network-side VSC converter station, one end of the power generator side VSC converter station is connected with a simulation power generation set, the other end of the power generator side VSC converter station is connected with the DC power grid, one end of the network-side VSC converter station is connected with the DC power grid, and the other end of the network-side VSC converter station is connected with the dynamic simulation AC power grid. By the dynamic simulation system, a reliable and convenient research platform is provided for a system construction scheme of the DC power grid, the design of a dispatching system, research on a control protection strategy and analysis on the dynamic response characteristic, and a favorable test environment is provided for developing and debugging of system engineering.

The invention relates to the technical field of aircraft composite material interlayer tensile stress design, and provides a method for determining an allowable value of an interlayer tensile stress design of an airplane composite material, which comprises: 1, determining influence parameters including a B reference value coefficient, an environment, a laying proportion, a thickness, a corner radius joint thickness, a damage and a thermal cycle influence coefficient; 2, determining an interlayer tensile stress design allowable value calculation formula based on the B reference value; 3, determining a test matrix; 4, determining a test environment standard, an environmental influence test moisture absorption saturation determination standard, a thermal cycle influence test cycle index and temperature spectrum, and a test piece damage determination standard; 5, performing a test by referring to an ASTM D6415 test standard to obtain an interlayer tensile stress average value and a B reference value initial value; 6, calculating a B reference value and each influence parameter; and 7, calculating an interlayer tensile stress design allowable value. The method is high in accuracy, highin universality, low in test cost and high in test efficiency.

The invention discloses a bidirectional hinge support device, and belongs to fatigue test technologies for main hub connecting piece assemblies. The bidirectional hinge support device is characterized by comprising a first fixing support (1), a first joint bearing assembly (2) with a handle, a waving force measuring rod (3), a spherical roller bearing assembly (4) with a handle, an simulation paddle connector (5), a connecting pin (6), a steel wire rope pulley assembly (7), a connecting support (8), a second joint bearing assembly (9) with a handle, a swing vibration force measuring rod (10), a third joint bearing assembly (11) with a handle and a second fixing support (12). The bidirectional hinge support device has the advantages that displacement in waving and swing vibration directions can be constrained, boundary conditions of connecting pieces can be accurately simulated during tests, test beds are stable, test environments are good, the bidirectional hinge support device is low in load fluctuation, total test errors can be within 3% under the control when the tests are carried out by the aid of the bidirectional hinge support device, the tests can be continuously carried out, and the test efficiency can be doubled at least.

The invention discloses a high-speed train axle box bearing test bench based on vibration rolling, which is characterized by comprising an electromagnetic vibration table (1), an extended table (2), a vertical force loading unit, a tested part, a spindle (12), a universal coupling (15) and a motor (16). The test bench can be used for axle box bearing test for a high-speed train at up to 350km / h.

The invention belongs to the field of water jet propulsion test devices, and particularly discloses a test device of a high-pressure water jet water jet propulsion device; the test device comprises asupporting unit, a water inlet unit, a high-pressure cavity unit and a water outlet unit; the supporting unit comprises a support and a flat plate supporting assembly; the water inlet unit comprises awater inlet transition plate and a water inlet pipe, and the water inlet transition plate is connected with the water inlet pipe through a water inlet sleeve; the high-pressure cavity unit comprisesa high-pressure cavity shell and a high-pressure cavity front end cover and a rear end cover which are positioned at the two ends of the high-pressure cavity shell, a water inlet is formed in the high-pressure cavity front end cover, the high-pressure cavity shell is supported on the flat plate supporting assembly through a sliding assembly, and a tension and pressure sensor is arranged between the high-pressure cavity shell and the water inlet transition plate; the water outlet unit comprises a thrust chamber inner cavity, , a nozzle and a nozzle replacement part which are communicated with each other, wherein the nozzle replacement part is connected with a rubber elastic hose through the water outlet transition plate. The test device can test the performance of the water jet propulsion device in a laboratory ground environment, and has the advantages of being simple in structure, convenient to operate and the like.

The invention discloses a measuring device with an automatic picking and placing function. The device comprises a rack, a rotating mechanism, a curtain mechanism, a movement module and a lighting mechanism, wherein the rotating mechanism, the curtain mechanism, the movement module and the lighting mechanism are installed on the rack, the movement module comprises a sliding rail, the rotating mechanism is installed on the sliding rail and moves along the sliding rail, the rotating mechanism comprises a lens installation part and a rotating device, the lens installation part is used for installing a lens to be tested, and the rotating device is used for driving the lens to be tested to rotate; the curtain mechanism is arranged at one side of one end part of the sliding rail; and the lightingmechanism comprises a light source, and the light source is arranged in a mode of being matched with the curtain mechanism. The device can automatically rotate the tested lens in the testing process,thereby reducing the workload, reducing the labor cost, further being capable of improving the control precision for the rotating angle, and avoiding an error brought about by the manual rotation. Inaddition, a good test environment can be provided for lens testing through adopting the curtain mechanism.

A semiconductor testing apparatus is provided wherein components that must be arranged most closely are arranged most closely to terminals of a test object. The present apparatus is semiconductor testing apparatus comprising a printed circuit board, and a test socket mounted on an upper surface of the printed circuit board and forming a signal connection path between a test object and the printing circuit board, wherein a chip shaped capacitor is mounted on the upper surface of the printed circuit board, an interference avoidance space avoiding contact with the capacitor is formed in the test socket, the interference avoidance space being formed at a location facing the location where the capacitor is mounted, and the capacitor and the test socket being non-contacted from each other by the interference avoidance space.

The invention relates to a novel pressure chamber for automatic output of fallen samples of a rock mass in a high-pressure environment, which belongs to the technical field of manufacturing of experimental instruments of rock and soil mechanics. The novel pressure chamber comprises a synchronous lifting system, an output system, a folding device, an external frame and a high-performance computer system. In the novel pressure chamber, the structure of the existing pressure chamber is improved; the novel pressure chamber has the following main values: 1, in order to reduce discreteness of parameters in a rock sample test process, a same rock sample is adopted for a mechanical test under the high-pressure condition, the fallen samples of the rock mass in the test process are automatically output, and the physical properties, the chemical properties and the like of the rock mass are tracked and measured synchronously; 2, the scattered fallen samples of the rock mass in the pressure chamber can be timely cleaned, so that a test environment is optimized, and the precision is ensured.

The invention provides a composite material tail fatigue and defect tolerance test apparatus to be used in a composite material tail fatigue and defect tolerance test. According to the invention, the apparatus can sufficiently examine the properties of the composite material tail in a composite material tail defect tolerance test, and acquires the service lifetime of the defect tolerance, can overcome delivery of over-conservative safe lifetime, the failure to provide the service lifetime of the defect tolerance, and insufficiency of the usage of a structure in the prior art technologies when determining safe lifetime of an aircraft body.

The invention discloses an actual drilling simulation and drilling parameter testing device and method for nearly horizontal directional drilling. The actual drilling simulation and drilling parametertesting device comprises six parts of a simulated geological body, a drilling drive system, a mud pump, a solid control system, a manifold system and a monitoring control system. A horizontally disposed concrete cylinder is utilized to simulate the real drilling geological body, tracks are laid in the axis direction of the concrete cylinder, a power head installed on the tracks is driven by a chain to slide to simulate a drilling machine, drilling fluid circulation is realized through the solid control system, the mud pump and the manifold system, all parts of a test bed are controlled by themonitoring control system, and parameters in the drilling process are monitored. The test bed can provide a site and a platform for directional drilling process development, instrument testing and nearly horizontal directional drilling fundamental researches.

The invention relates to a railway vehicle rolling vibration test bench curve passage testing method. The invention provides a test bench curve simulation method by comprehensively considering stressof a vehicle and track change features in allusion to a condition that the vehicle operates on an actual curve track. The railway vehicle rolling vibration test bench curve passage testing method realizes simulation for a vehicle curve passage test through setting the wheel speed difference for test bench rolling vibration wheels, setting the rolling vibration wheels at tangent positions, settinga rolling wheel superelevation angle and applying a centrifugal force to the gravity center position of the vehicle body under the condition of considering a centrifugal force received by the vehiclein running, the track superelevation, the track inside and outside rail length difference and circular curve features of the track. The method can effectively simulate displacement changes of a contact point between the wheel and the track under curve running of the vehicle, contact features such as wheel set swinging angle, the wheel-track transverse force, the derail factor and abrasion power features. Meanwhile, the method can also simulate all omnidirectional and multi-degree-of-freedom unsmooth operating conditions brought about by transverse, vertical, bending and track gauge changes ofthe track in running of the vehicle, and the analysis data is reliable and accurate.

The present invention relates to an integrated device for a waterproof test. The device comprises a box (1), a base (2), a storage water tank (3), a splash-proof case (4) and an electrical system. The box (1) is disposed on the base (2), a rotary mechanism being installed in the box, a water inlet being arranged at one side of the box (1); the splash-proof case (4) is in seal connection with the water inlet of the box (1), and a spray nozzle (7) is installed at one side of the splash-proof case (4); the storage water tank (3) is disposed at the bottom of the splash-proof case (4), the water outlet of the storage water tank (3) is connected with a water inlet of a water pump, and a water outlet of the water pump is connected with the spray nozzle (7) through a water pipe; and a back-water inlet (8) is arranged at the side of the storage water tank (3) and connected with a water outlet (9) at the bottom of the box (1) through the water pipe. The device provided by the invention is characterized in that water resource is greatly saved, noise is well controlled when water is strongly flushed, and at the same time water in the test may be not splashed out, thereby the test environment is effectively improved.

The invention discloses a two-stage air-suspending centrifugal air compressor comprehensive performance test-bed which comprises a primary air inlet end pipeline, a secondary discharge end pipeline, acooling air discharge pipeline and a cooling water circulation pipeline. The two-stage air-suspending centrifugal air compressor comprehensive performance test-bed provided by the invention has the beneficial effects that the performance test-bed is scientific and reasonable in structure design, and high in automation degree; and through a series of sensors arranged on the device, multiple data can be measured, and the measured data is comprehensive, so that the demand on the dependence test of performances of an air compressor can be met, the two-stage air-suspending centrifugal air compressor comprehensive performance test-bed is applicable to air supply performance tests, water cooling performance tests and air cooling performance tests of air compressors and air supply systems in multiple models and under multiple working conditions, the working efficiency and the accuracy are greatly improved, an ergonomic design is favorable, and the test and working environment is greatly improved.

The invention discloses a high and low temperature impact test box, which comprises a box body, a high temperature chamber, a low temperature chamber, a load basket and test elements, an evaporator, a refrigeration device, a water outlet, a water inlet, a pneumatic transmission device, a heat exchanger, and a motor , a heater and a rotating wheel, the box is provided with a high-temperature chamber; one end of the high-temperature chamber is fixed with a heater; the high-temperature chamber is fixed with a motor; one end of the motor is provided with a rotating wheel; A low-temperature chamber is arranged on the top; a loading basket and test elements are arranged in the low-temperature chamber; an evaporator is fixed at one end of the low-temperature chamber; a motor is fixed at one end of the low-temperature chamber; a rotating wheel is arranged at one end of the motor; A refrigeration device is arranged in the box; a heat exchanger is fixed on the refrigeration device; a water outlet is arranged on the box; a water inlet is arranged on the water outlet; a pneumatic transmission device is fixed in the box. The invention has the beneficial effects of energy saving, environmental protection and good test results.

The invention relates to the technical field of vehicle performance testing, in particular to a tunnel testing system and method based on V2X, and the method comprises the following steps: a testing preparation step: setting UWB fixed base stations at intervals in a tunnel; a test vehicle is selected, the test vehicle comprises a test vehicle body, and the test vehicle body is provided with a V2Xcommunication module and a UWB mobile base station; a driving test step: enabling the test vehicle to drive in the tunnel at a set speed, communicating with the roadside equipment, and recording a feedback result of the UWB mobile base station and a driving result of the test vehicle; and a test analysis step: judging whether the communication between the test vehicle and the roadside equipment isnormal or not according to the feedback result, and determining that the test succeeds when the communication is normal and the driving result is successful driving. By the adoption of the scheme, the problem that in the prior art, in a closed environment such as a tunnel, errors exist in a vehicle test result due to environmental influences is solved, so that the vehicle is tested in the closedenvironment, and the accuracy of the test result is improved.

The invention relates to a platform and method for monitoring a ground test launch control system. The method comprises reasonably planning a ground single machine and cable network layout; acquiringthe display images of a status display and a central computer display, and the status image of a test launch control device panel; identifying a currently executed process step; calling a corresponding template from a template; performing matching; and determining that a current test status is normal if matching is successful, or giving an alarm if not. The platform rearranges cable positions by acable arrangement box, is provided with a wire duct, and is provided with an independent wiring space to help the concentration of respective single machines of a test launch control system and a monitoring and operation panel. The platform and method perform comprehensive judgment by identifying a first word and a color block length, ensure the accuracy of process identification, obtain the corresponding template through the process, and ensure the accurate monitoring of the device state by the matching of the template.