20 results about "Measurement test" patented technology

This invention relates to the field of research on the operational characteristics of overpressure relief devices, and particularly to an experimental device for measuring the operational characteristics of overpressure relief devices under water hammer conditions. The device includes: a high-pressure air compressor, a frame, a piston accumulator, a quick-opening device, a high-pressure test assembly, and a high-frequency dynamic pressure sensor. This invention enables the measurement of operational characteristics under different pressure rise rate loads caused by water hammer phenomena on a test bench, providing an experimental platform for the research on the operational characteristics of overpressure relief devices under high pressure rise rates. The overall device is simple, quick, and stable. It effectively solves the problem of applying high pressure rise rate loads in current overpressure relief device operational characteristic measurement tests, overcomes the danger of using combustible gas explosions as pressure sources in existing operational characteristic measurement tests, and overcomes the shortcomings of existing test methods, such as long testing times, the need to calculate gas explosion pressure, and the difficulty in accurately controlling the pressure rise rate.

An intelligent perception system measurement test method based on image color calibration, the method is used for color defect parameter acquisition of the camera, and is used for intelligent perception test data set calibration, and the intelligent model is tested by using the calibrated data set. The method can apply the color parameters of the camera to the data through a quadratic function, obtain a test data set containing related hardware parameters, make the test of the intelligent model more close to the actual performance of the future algorithm, effectively improve the accuracy of the test result, and by comparing the test results before and after calibration, whether the current camera meets the task requirements can be effectively determined.

1. The name of the design product: the universal measuring test adapter for the aviation special equipment with pull rod. 2. The use of the design product: for the aviation special equipment measuring test. 3. The design points of the design product: the combination of shape and pattern. 4. The picture or photo that best shows the design points: perspective view 1.

The application discloses a wind speed and direction sensor, a wind speed and direction detection device and a method, and belongs to the technical field of measurement and testing. The wind speed and direction sensor comprises a substrate, a heating component and a plurality of impedance measurement components. The substrate is internally provided with at least two cavities arranged along a first direction and at least two cavities arranged along a second direction; each cavity contains an electrolyte solution; the first direction is orthogonal to the second direction; the heating component is arranged on the upper surface of the substrate; a plurality of impedance measurement components are arranged corresponding to each cavity; wherein, for any cavity: a through hole is arranged on the upper surface of the substrate corresponding to the cavity, one end of the impedance measurement component contacts the electrolyte solution in the cavity, and the other end of the impedance measurement component extends to the upper surface of the substrate through the corresponding through hole; the impedance of the electrolyte solution monotonously changes with temperature. The embodiment of the application can effectively reduce the power consumption of the sensor and improve the detection sensitivity.

A system, method, medium, and electronic device for testing seismic data acquisition devices are disclosed. The system includes: a signal generator, a digital multimeter, at least one seismic data acquisition device, a connector, and a host computer. The signal generator generates electrical signals; the digital multimeter measures electrical parameters in the test circuit; the seismic data acquisition device performs corresponding processing operations on its input signals in its current test circuit and transmits the results of the processing operations to the host computer; the connector controls the state of each relay in the relay group to form a test circuit for the current test index; the host computer sends test control commands and determines the test results of the seismic data acquisition device for the current test index based on the received information. This disclosure facilitates convenient and accurate testing of various indicators of seismic data acquisition devices, thereby improving the testing efficiency and reliability of test results.

A measurement device that uses a measurement chip having a reaction region for detecting a test substance and measures a reaction of the test substance in the reaction region by using fluorescence, the measurement device including a measurement unit that irradiates the reaction region with excitation light and detects the fluorescence emitted from the reaction region, a mounting part to which the measurement chip is attachably and detachably mounted, a check chip for checking the measurement unit, the check chip being attachably and detachably mounted to the mounting part, and a storage part that stores the check chip and is provided at a location different from the mounting part.

This invention discloses a dual-support ventilation force measurement test device and its application method for high-speed wind tunnels, relating to the field of wind tunnel testing technology. It includes: a tail base; two support rods on both sides of the tail base; and dummy support rods fixed to the tail base. The front end of the tail base, serving as the windward surface, adopts a streamlined shape, and the rear end of the tail base is designed with a 1:10 conical connecting section. The front end of the dummy support rods is provided with a bifurcated structure for mounting multiple pressure rakes. The bifurcated structure is designed with elongated adjustment holes for adjusting the axial position of the pressure rakes, and the gap generated after axial position adjustment is filled by compensation blocks of corresponding sizes. This invention connects and fixes the dual-support ventilation force measurement test device to the wings on both sides of the model (the connection point is located after the air inlet), aiming to simultaneously solve the two major problems of multi-faceted internal flow channel encroachment and external flow field interference, and is convenient to install and has strong load-bearing capacity.

This invention provides a pipe-integrated six-component jet balance and its usage method. The jet balance features an integrally formed axial force element, a five-component element, and a support rod connector, coaxially arranged along the negative X-axis. A pipe runs through the entire balance axis, and the five-component element and support rod connector are equipped with grooves. The axial force element adopts a spoke-type structure, consisting of a moving ring, a stationary ring, and transverse and vertical sensitive beams. The five-component element comprises front and rear rectangular beams and a central cylindrical beam. The support rod connector features a conical inner cone and wedge holes. Strain gauges are mounted on both the axial force element and the five-component element to form a Wheatstone bridge, enabling independent measurement of the six components. This invention integrates the pipe into the balance body, completely avoiding interference from contact between the pipe and the sensitive element, significantly improving force measurement accuracy. The overall structure is compact, with a small diameter and light weight, facilitating calibration and installation. Its usage method is simple to install, provides stable signal output, and can efficiently complete wind tunnel jet force measurement tests.

A method for obtaining micro-vibration test conditions for aerospace vehicles involves: searching for micro-vibration disturbance sources during the vehicle's on-orbit operation; classifying the micro-vibration disturbance sources and identifying those that cannot be avoided; conducting micro-vibration environment measurement tests on the unavoidable disturbance sources to obtain the time-domain curve of the maximum vibration environment of the disturbance sources; establishing a finite element model for micro-vibration response analysis; conducting transient response analysis to determine the micro-vibration response of precision instruments; converting the time-domain curve of the micro-vibration response of the precision instruments into a frequency-domain curve and performing envelope design to obtain the micro-vibration test conditions of the precision instruments for subsequent experimental verification.

The application discloses a kind of calibration test device and method, it is related to measurement test technical field.The calibration test device includes heating piece, driving piece and control assembly.Heating piece defines and contains cavity, the inner peripheral wall of heating piece is adapted to test piece, heating piece is used to heat test piece to preset temperature.The output end of driving piece extends into containing cavity, the output end of driving piece can be connected with test piece and can drive test piece vibration.Control assembly is connected with heating piece and driving piece, and control assembly is used to control the preset temperature of heating piece and the vibration degree of test piece.The calibration test device can improve the reliability of test piece calibration test.

To provide a pile hole penetration tester that can perform measurement tests normally even when the depth of the ground being measured is great. [Solution] An inner casing 3, which is held upright and downright within an outer casing 2, is provided with a penetration rod 6 together with a knocking block 37. The inner casing 3 is provided with a guide section 35 and a weight 38 which is provided upright and downright on the guide section 35 and strikes the knocking block 37. Furthermore, the inner casing 3 is provided with a geared motor 30 and a first pulley 31, a second pulley 32, a first drive belt 33, and a second drive belt 34 which promote the up and down movement of the weight 38 by the drive of the geared motor 30.

This application relates to a driver's field of vision simulation device and its measurement method. The driver's field of vision simulation device includes a main body, a light-emitting mechanism, and a measuring mechanism. The main body is mounted on the driver's seat of a test vehicle. The light-emitting mechanism includes multiple light sources and an adjustment module. The adjustment module is mounted on the main body and connected to the light sources. The adjustment module is used to adjust the lateral, longitudinal, and vertical positions of the light sources relative to the test vehicle. The measuring mechanism is mounted on the main body and is used to measure the distance between the driver's seat latch point and the main body. The solution provided in this application can ensure the accuracy of driver's field of vision testing.

This utility model discloses a PIV flow field measurement test support frame for a cooling fan. The upper connecting frame has multiple upper fixing holes, which are used to support the end face of the cooling fan outside or inside the fan's airflow hole area, with one end of each upper fixing hole abutting against the end face of the cooling fan. Hot melt adhesive is dripped into the upper fixing holes to fix the cooling fan to the upper connecting frame. The lower connecting frame is used for detachable support and fixation on a test platform or base. The upper end of the vertical cylinder frame is fixed to the upper connecting frame, and the lower end of the vertical cylinder frame is fixed to the lower connecting frame. When the fan's airflow hole area is located inside the vertical cylinder frame on the vertical projection plane, the vertical cylinder frame has through holes. This utility model can conveniently and stably support a cooling fan model to complete the PIV test, ensuring that hot melt adhesive will not enter the fan's interior and damage the model, and ensuring that the cooling fan model can be quickly disassembled and installed without affecting the cooling fan's flow field.

The present application belongs to the technical field of mechanical equipment manufacturing, and particularly relates to a grease stirring resistance and viscous resistance measuring device and method. The stirring resistance and viscous resistance measuring device is designed according to the geometric configuration relationship between the rolling body and the rolling track, and can represent, calculate and evaluate the stirring resistance and viscous resistance of the rolling bearing grease. The gravitational potential energy is converted into kinetic energy and then into internal energy received by the rolling body during operation. The stirring resistance and viscous resistance of the grease under different motion conditions are calculated by using the energy conversion method. The reliability is verified through measurement tests, and the measurement results can be further used as a technical standard for judging the physicochemical properties of the grease, and have good application prospect. The device structure is simple and effective, the measurement means and method are standardized, and can provide a basis for estimating the stirring resistance and viscous resistance of the grease.

This invention relates to the field of measurement and testing technology, and discloses a comprehensive valve inspection device and method, comprising: a loading module and a rotating support module fixed on a frame; the rotating support module is equipped with an intermittent rotating turntable, and a multi-station vision inspection module is arranged circumferentially along the intermittent rotating turntable; the multi-station vision inspection module includes a disc surface inspection station, a rod diameter inspection station, a rod length inspection station, a neck inspection station, and a rod end face inspection station arranged sequentially, each station being equipped with a corresponding vision inspection mechanism; the control module includes a vision processing unit and a control unit, which are electrically connected to the loading module, the rotating support module, and the multi-station vision inspection module, respectively. This invention solves the problems of single inspection function, reliance on manual labor, low efficiency, and lack of data management, achieving the goals of automatic multi-parameter inspection, high precision, high efficiency, and intelligent recognition.

Provided is a laminate having good shock absorption, air permeability, and detachability of a hook-and-loop fastener. This laminate (1) is obtained by adhering a first polyurethane foam layer (3) and a second polyurethane foam layer (5). The number of cells of the first polyurethane foam layer (3) as based on JIS K 6400-1:2004, Appendix A, is 6-40 cells / 25 mm; the resilience of the second polyurethane foam layer (5) as based on JIS K 6400-3:2011 is 15% or less; and when a measurement test piece of the laminate (1), which is obtained by adhering the first polyurethane foam layer (3) having a thickness of 3.0±1.0 mm and the second polyurethane foam layer (5) having a thickness of 9.5±1.0 mm, is measured in accordance with the A method of JIS K 6400-7:2012, the degree of air flow is 25 cm3 / cm2·s or more.

The present application relates to the technical field of CO2 flow test, and specifically to a kind of under pressure multiphase CO2 flow measurement test system, including movable mounting frame, booster pump, carbon dioxide initial installation container, carbon dioxide receiving container, flowmeter, back pressure valve and parallel experiment component, booster pump is equipped with second stop valve by second hose, second stop valve is fixedly connected with flowmeter one end by first conveying pipe, and the other end of flowmeter is connected with parallel experiment component one end by shunt pipe, and parallel experiment component other end is fixedly connected with back pressure valve one end by confluence pipe, back pressure valve is connected with third stop valve by second conveying pipe, and the end connected with second conveying pipe is provided with adjusting assembly, and the other end of third stop valve is connected with fourth stop valve by connecting hose, and is connected with carbon dioxide receiving container by receiving container pipeline.The temperature, pressure, flow change of CO2 in pipeline can be accurately recorded, so as to carry out gas-liquid flow test and gas-liquid solid test, and the test efficiency is improved.

The present application belongs to the technical field of wind tunnel test, and discloses a high-enthalpy shock tunnel flow field diagnosis device and method. The main body of the flow field diagnosis device is a double-layer square tube structure embedded inside and outside. The inner layer center cavity is an inner flow channel, and a 16° wedge is fixed in the inner flow channel. The front section of the outer layer square tube body is provided with an outer baffle, and the rear section is a straight section. The double-layer square tube structure corresponding to the 16° wedge is provided with left-right symmetrical optical windows, and the flow field density change of the 16° wedge is observed through a schlieren system. The front section of the outer layer square tube body is provided with a TDLAS measurement unit, the rear section is provided with a ball head stagnation point heat flow assembly and a pitot pressure assembly. The flow field diagnosis method comprises installing the flow field diagnosis device, performing flow field measurement test, and calculating flow field parameters. The flow field diagnosis device and method are verified by multiple test means, and the free stream parameters of the high-enthalpy shock tunnel are given, thereby providing technical support for developing hypersonic aircraft aerodynamic force and aerodynamic heat characteristic test and air-breathing power characteristic evaluation test.

A kind of soft soil foundation pipeline settlement measurement test device and method, the device seabed environment simulation test box is equipped with soft soil foundation;Lifting mechanism upper end is fixed with support frame;Lower bearing rod is fixedly provided with traction disc, upper bearing rod is fixedly provided with first pulley, center bearing rod is fixedly provided with second pulley, and the lower part of center bearing rod is provided with displacement sensor;Lifting slide rail is connected with anti-interference sliding cylinder by lifting sliding block;Traction disc is connected with traction cable, and traction cable is connected lifting sliding block after passing first pulley and second pulley;The lower end of anti-interference sliding cylinder is connected with pipeline body, and pipeline body is settled on soft soil foundation in seabed environment simulation test box;Displacement sensor carries out real-time measurement to the settlement of pipeline body on soft soil foundation.The present application can study the settlement of different scale pipelines, so as to more accurately predict the settlement of full-size pipeline;Improve test efficiency;Provide reliable data support for actual engineering pipeline settlement.