40results about How to "Test true" patented technology

The invention discloses an adjustable-crack type temporary plugging acid fracturing steering performance testing device and an evaluation method, and belongs to the technical field of the petrochemical industry. The adjustable-crack type temporary plugging acid fracturing steering performance testing device includes a water storage tank, a plunger pump, an acid liquid tank, an adjustable simulatedcrack device, a filtrate metering electronic balance, and a computer control system which are sequentially connected. According to the adjustable-crack type temporary plugging acid fracturing steering performance testing device, a simulated crack is adjustable in size and form, and a parallel crack and a wedge-shaped crack of 0.5-8mm can be simulated; and both the simulated crack and temporary plugging acid liquid are heated to simulate the formation temperature, and the effect law of the crack size, shape, and the formation temperature on the temporary plugging effect can be studied. The effect of temporary plugging is mainly evaluated in performance by observing the change of upstream and downstream pressure difference, the filter loss, and the formation position of bridge blinding.

The invention discloses a wiring harness stretch performance detection device which comprises a working platform, a pull load mechanism and a clamping mechanism. The pull load mechanism comprises a cylinder. An output part is a piston rod of the cylinder. The clamping mechanism comprises two groups of clamping components. Each clamping component comprises two fixing plates. Arc grooves used for clamping wiring harness are arranged in the corresponding positions of the two fixing plates. One of the clamping components is fixedly arranged on the working platform. The other clamping component is connected with the output part of the pull load mechanism in a rigid mode and capable of moving under the action of the pull load mechanism. Due to the fact that load and release motion of the wiring harness to be detected are executed by a pneumatic system, the wiring harness stretch performance detection device is capable of being simple and direct, lower in cost, environment-friendly and free from pollution. Load speed is adjusted by a speed adjustment valve so that detection is more accurate, comprehensive, real and reliable. The clamping mechanism of the wiring harness stretch performance detection device is simple and direct in design and convenient to install and operate. Detail processing of the surface is unique. The surface of the wiring harness to be detected is not pressed and damaged due to the design of double-arc transition. The wiring harness is capable of being normally used after the wiring harness is detected so that waste is avoided.

In order to be able to test a combination of components of a vehicle on a test rig with improved dynamics, it is provided that, in a simulation unit (20) on the basis of a simulation model (21) for the at least one component of the combination comprising a drive train moment (TP), which acts in the drive train (2), and a braking effect (B) of the braking system (11), the instantaneous drive train rotation speed (nP) of said component is calculated and the calculated instantaneous drive train rotation speed (nP) of the vehicle controller (14) is used in order to control the at least one component, and the calculated drive train rotation speed (nP) is used by a drive controller (23) in order to control the load machine (8).

The invention discloses a testing device for tracking performance of a photoelectric stabilization tracking platform. The device comprises a collimator tube, a display screen and a video management computer, wherein the video management computer can directly output a practically recorded video image containing a true target and a background, and can also output a video image which is generated by software superposition and contains a simulated target and the background; the display screen is placed on a focal plane of the collimator tube, and displays the video image which is output by the video management computer and contains the background and the simulated target; and the collimator tube sends the collimated video image into a view field of the to-be-tested photoelectric stabilization tracking platform. The device can test the servo tracking loop performance of the photoelectric stabilization tracking platform, and can also test the performance of a video tracker according to variations of the background and the simulated target of the image on the display screen, so that the comprehensive tracking performance testing of the photoelectric stabilization tracking platform is achieved. The testing device has the advantages that the testing device is simple in structure, easy to operate, and wide in testing range.

The invention discloses a three-oil cup insulating oil withstand voltage tester, which comprises a master control singlechip microprocessor CPU, an input unit and an output unit of the master control singlechip microprocessor, a communication unit and a stepping motor of the master control singlechip microprocessor CPU, wherein, the communication unit is connected with the master control singlechip microprocessor CPU; the output end of the stepping motor is connected with the regulating end of an autotransformer; the output end of the autotransformer is connected with a transformer; the output end of the transformer is connected with two or three insulating detection oil cups in parallel; the positive end and the negative end of each oil cup are connected with high-voltage switches; the negative end of each oil cup is provided with a current signal collector; the output end of the current signal collector is connected with the master control singlechip microprocessor CPU; and a direct current high-voltage static trash separator is arranged on the upper end of each oil cup.

The invention provides an Internet application testing method and device. The device comprises a TCP parsing module, a traffic forwarding module and a traffic mirroring module, wherein the TCP parsingmodule includes a service request acquisition sub-module, a forwarding sub-module and an interface exposure sub-module; the traffic mirroring module includes a copy sub-module and a test transmissionsub-module. The device provided by the embodiment of the invention can mirror and replicate a service request in a bypass mode, acquire a real-time traffic mirror in the case of little impact on theactual service operation and low occupancy of system resources and obtain an accurate and reliable test result.

The invention relates to a method for testing the melting speed of continuous casting powder. The method is characterized by comprising the following steps of: weighing three parts of casting powder samples by using a scale, wherein each part is 1.49-1.51 g; in the event of raising the temperature, placing a crucible in a furnace, raising the temperature of the furnace to 1350 DEG C, wherein the temperature fluctuation error is + / - 20 DEG C, and keeping the constant temperature for 20 min; taking out the crucible from a hearth, rapidly adding a part of casting powder sample to be tested into the crucible, putting the sample together with the crucible in the furnace, simultaneously, stating a stopwatch to time, and recording the time required for completely melting the sample, namely the time for putting the sample in the hearth till the last dark spot is brightened; calculating the melting speed according to the formula MR=W / tau*A; and repetitively testing according to the above steps and calculating other samples, and then solving an average value to obtain the melting speed MR of the casting powder under the 1350 DEG C condition. The invention aims to provide the method, which is capable of simulating the one-way heating and melting condition of the casting powder on a steel level in a crystallizer and true reflecting the melting speed of the casting powder.

The invention discloses a method of evaluating tight reservoir mobile fluid distribution characteristics. The method comprises the steps that (1) a rock sample is subject to oil washing, and porosityand permeability are measured after drying; (2) the rock sample is saturated to simulate formation water, and a nuclear magnetic resonance T<2> spectrum is measured; (3) a centrifugation experiment ofwater displacement by oil is performed on the rock sample, and optimal centrifugal force is determined; (4) the optimal centrifugal force is selected, and a nuclear magnetic resonance T<2> spectrum after centrifugation is measured; (5) a nuclear magnetic resonance T<2> cut-off value is determined; and (6) the mobile fluid distribution characteristics are obtained. According to the method, based on the principle of a nuclear magnetic resonance mobile fluid test, the optimal centrifugal force of the rock sample is determined first, then the nuclear magnetic resonance T<2> spectrum after centrifugation is measured according to the optimal centrifugal force, the T<2> cut-off value is determined, and the mobile fluid distribution characteristics of the rock sample are obtained. Through the method, an experiment error can be effectively lowered, and a tight reservoir mobile fluid percent can be determined more truthfully, accurately and rapidly.

The invention discloses a device and a method for testing the RFID sensitivity, comprising a computer, a UHF reader to be tested and a test fixture. The computer, the UHF reader to be tested and the test fixture are communicatively connected through an Ethernet interface or an RS232 interface; the computer is used to start the sensitivity test, the reader sends the count command and single carrieraccording to the UHF protocol, and the UHF chip bound on the tooling board will reply the random number or EPC code information or TID information according to the decoded command. The tooling boardof the method consists of a ring, a coupler, a UHF tag chip, a numerically controlled attenuator, a power unit calibration unit and a microprocessor, etc. It can replace expensive testing instruments,and the testing results are more true and accurate.

The embodiment of the invention provides a media gateway test method, a media gateway test device and a media gateway test system. The method comprises steps: a test configuration file is acquired, wherein the test configuration file comprises transmitting parameters of at least two different transmitting rate voice test messages; and according to the test configuration file, the at least two different transmitting rate voice test messages are transmitted to the media gateway. In the embodiment of the invention, the at least two different transmitting rate voice test messages are transmitted to the media gateway according to the test configuration file, and thus, the tested media gateway can receive voice test messages with different transmitting rates, the voice test messages are similar to received voice messages transmitted by a real mobile phone, the real voice call process can be simulated, and the voice performance of the media gateway can be ensured to be tested more really.

The disclosed report method for subzone power value comprises: A. building plane coordinate on analog region of RNC, and setting unit length for real distance; B. when moving to target position, calculating the distance between terminal and target subzone as well as near subzone according to target coordinate value and base station position value, and mapping distance to real value; C. by the geographic distance value calculating power value to report. This invention is convenient to start up the switch process for analog testing.

The invention discloses a photovoltaic module testing device and testing method. The testing device comprises a testing box body and a control device, the testing box body is used for testing the temperature and the humidity of a photovoltaic module, the control device is used for adjusting the temperature and the humidity of the testing box body, and a light source assembly, a placement assemblyand a detection assembly are further arranged in the testing box body; and a corresponding light source assembly is arranged in the testing box body, a light source can be provided for irradiating thephotovoltaic assembly in the test process, and illumination factors are increased, so that the test accuracy is improved. During testing, the bottom of the photovoltaic module is inserted into a slotin a sliding manner, and during dismounting, the photovoltaic module is directly pulled out, so that the whole photovoltaic module can be mounted and dismounted conveniently and quickly, the consumedtime is shorter, the testing efficiency is higher, the testing method of the testing device is used, and an outdoor environment can be simulated more accurately by introducing an illumination condition. The PID recovery phenomenon caused by illumination is eliminated, and the outdoor PID phenomenon of the photovoltaic module can be tested more truly.

The invention provides a coal plough planing blade mechanical characteristic on-line testing device, and fundamentally solves the problem that mechanical characteristic data under a coal plough condition fails to be detected. According to the technical scheme, a coal plough cutter head comprises a cutter seat, a cemented carbide cutter head arranged on the front end of the cutter seat, a protection cover assembled on the cutter seat, and a cutter rod arranged on the bottom part of the cutter seat; the middle part of the cutter seat is provided with a square hole, and the vibration sensor is placed in the square hole through a strong magnetic base; a gap exists between the tail part of the cutter seat and the cutter rod; the square hole and the front end of the cutter seat form a tetragonal column, strain gage grooves are machined in the four surfaces of the tetragonal column, and the strain gage grooves are respectively equipped with strain gages I-III; and the front inner wall of the square hole is provided with the strain gage III; the protection cover is a U-shaped housing provided with a hook-shaped structure, the protection cover is embedded in the outer wall of the cutter seat through the front part of the cutter seat, and the hook-shaped structure is clamped to the rear part of the cutter seat and is fastened through a sunk screw. The coal plough planing blade mechanical characteristic on-line testing device has the advantages of simple structure, convenient usage, easy control, visual data detection, reliable detection result and the like.

The invention provides an axial fatigue performance testing device for a connecting rod of a high-power diesel engine and an application method thereof. The axial fatigue performance testing device comprises a lubricating device, a large-end fixture connected with a table of a fatigue testing machine and a small-end fixture connected with an actuating cylinder of the fatigue testing machine, wherein the large-end fixture is connected with the lubricating device through an oil return pipe, and the small-end fixture is connected with the lubricating device through an oil inlet pipe; the large-end fixture comprises a chassis simulation crankshaft pin and a large-end fixture mechanism, the small-end fixture comprises a top plate, a simulation piston pin and a small-end fixture mechanism, and the lubricating device comprises an oil tank, an oil outlet, an oil return port, a gear pump, a power switch, an overflow valve, a pressure gauge and a pressure gauge switch. The axial fatigue testingdevice has the characteristics of high rigidity, fatigue resistance, convenient assembly and disassembly and adjustable aperture, can be applicable to fatigue performance testing for large diesel engine connecting rods with different apertures, has the characteristics of circulation flow of lubricating oil and adjustable pressure of the lubricating oil through setting the lubricating device and can simulate the lubricating state of the connecting rod in service.

The invention relates to a flexible connection testing tool which comprises a testing frame, an adjustment block disposed on the testing frame and used to be firmly connected to a fixation end of flexible connection as well as a movable slide block assembled on the testing frame in a vertical guiding manner and connected to a movable end of the flexible connection, wherein the adjustment block can horizontally adjust a size between the adjustment block and the movable slide block by an adjustment structure and can be fixed after adjustment, and the flexible connection testing tool also comprises a driving mechanism which can drive the movable end of the flexible connection and the movable slide block to move up and down. The movable slide block is used to simulate a movable end of a vacuum arc extinction room, and the adjustment block can adjust a distance between the adjustment block and the movable slide block, so that a length of the flexible connection between a solid-sealed polar pillar and the movable end of the vacuum arc extinction room during actual work of the flexible connection can be simulated; actual working conditions of the flexible connection in the actual work can be simulated well; and performance of the flexible connection can be tested more authentically.

The invention discloses a dielectric loss test method and device for collecting a contrast current signal by using a resistor divider. The dielectric loss test device comprises a step-up transformer,an insulation wire, the resistor divider, a current measuring coil group, a dielectric loss test module, a position to be tested, and a number of ground terminals. The current measuring coil group isused to collect the values of current flowing through the resistor divider and the position to be tested. The voltage value of the high voltage end of the step-up transformer is determined according to the current value and the resistance value of the resistor divider. The dielectric loss test module calculates the phase difference between the current value of the resistor divider and the currentvalue of the position to be tested to determine the dielectric loss angle of the position to be tested. According to the voltage value of the high voltage end of the step-up transformer and the current value of the position to be tested, the capacitance of the position to be tested is determined. According to the invention, the device is based on the current of the resistor divider, and can trulyand reliably test the relevant parameters of the position to be tested.

The invention provides a sample table for inhibiting a quasi-optical cavity degeneration higher-order mode and a testing method and application thereof. The sample table comprises a dielectric substrate, the center of the dielectric substrate is provided with a circular metal coating layer, and a microwave matching circuit structure is engraved on the metal coating layer. The microwave matching circuit structure comprises two gaps which are symmetrically arranged at two sides of the center of a circle of a circular metal coating layer and are parallel to a TEM00q mode electric field direction.The thickness of the metal coating layer is greater than the skin depth of working frequency point electromagnetic waves; the loss tangent value of the dielectric substrate material is higher than 1e-4. According to the invention, on the premise that the TEM00p mode is not affected, the non-TEM00p mode near the TEM00p mode is not matched, so that the resonance phenomenon cannot be excited; and thus the energy can be consumed through the high-loss substrate, so that double peaks appearing in the TEM00p mode corresponding to the frequency spectrum can be improved into symmetrical single peaks;when the quasi-optical cavity method is used for testing a complex dielectric constant, the test of the Q value corresponding to the TEM00p mode is more real, so that the precision of testing the lossof the material to be tested through the quasi-optical cavity method is improved.

The embodiment of the invention discloses an interface testing device for a notebook computer. The interface testing device comprises a control module, and an HDMI interface testing module, a USB testing module and a Type-c function testing module which are connected with the control module; the test device can effectively test each interface of the notebook computer, does not need to use additional equipment, achieves the effect of saving material resources, receives test information of the HDMI interface test module, the USB test module and the Type-c function test module by utilizing the control module, and can play a role in visualizing a test result; the display effect of the external display does not need to be checked manually, subjective judgment on the display effect is avoided, the test coverage rate is increased, the test efficiency is high, the labor cost is low, and great benefits are brought to production and operation of enterprises.

The test apparatus comprises: an oil pool, and an oil tank. The oil pool is located above the oil tank; there is a oil pipeline located between said oil pool and oil tank; one end of the pipeline is located at the bottom of the oil pool, and the other end of the pipeline enters into the oil tank; there is a controllable switch valve located on the pipeline; on the inner wall of the oil pool thereis a oil level scale.

The invention provides a coal plough planing blade mechanical characteristic on-line testing device, and fundamentally solves the problem that mechanical characteristic data under a coal plough condition fails to be detected. According to the technical scheme, a coal plough cutter head comprises a cutter seat, a cemented carbide cutter head arranged on the front end of the cutter seat, a protection cover assembled on the cutter seat, and a cutter rod arranged on the bottom part of the cutter seat; the middle part of the cutter seat is provided with a square hole, and the vibration sensor is placed in the square hole through a strong magnetic base; a gap exists between the tail part of the cutter seat and the cutter rod; the square hole and the front end of the cutter seat form a tetragonal column, strain gage grooves are machined in the four surfaces of the tetragonal column, and the strain gage grooves are respectively equipped with strain gages I-III; and the front inner wall of the square hole is provided with the strain gage III; the protection cover is a U-shaped housing provided with a hook-shaped structure, the protection cover is embedded in the outer wall of the cutter seat through the front part of the cutter seat, and the hook-shaped structure is clamped to the rear part of the cutter seat and is fastened through a sunk screw. The coal plough planing blade mechanical characteristic on-line testing device has the advantages of simple structure, convenient usage, easy control, visual data detection, reliable detection result and the like.