11 results about "Step test" patented technology

The invention discloses a mechanical property testing device and method, which can provide temperature, pressure, humidity and other environments close to a deep environment before and in the maintenance process of a sample, and can realize time sequence synchronous loading and space uniform distribution of multiple physical fields in deep high-temperature, high-stress and high-humidity environments. The technical defect of stress field-temperature field-humidity field decoupling evolution in a traditional step-by-step test is overcome, and the mechanical boundary condition of deep surrounding rock-filling body collaborative bearing is truly restored.

The utility model relates to the technical field of incomplete penetration detection of pipelines, in particular to a stepped test block for detecting weld defects. According to the technical scheme, an adjusting plate is arranged on one side of a fixing block, a second flat-bottom hole and a third flat-bottom hole are formed in the fixing block, a first flat-bottom hole is formed in the adjusting plate, and a second clamping groove and a third clamping groove are formed in the two sides of the fixing block respectively; the adjusting plate is connected with the second clamping groove or the third clamping groove in a clamped mode through the second inserting block. A first clamping groove is formed in the bottom end of the fixing block, a first inserting block is arranged at the bottom end of the adjusting plate, and the adjusting plate is clamped in the first clamping groove of the fixing block through the first inserting block and then is attracted and fixed through the first magnet and the second magnet. According to the utility model, the adjusting plate can flexibly slide on the fixed block or be fixed at different positions, so that different detection requirements are met, and the adjusting plate can be conveniently clamped on the fixed block, so that the device is convenient to store and carry.

The invention discloses an accelerated life test device and method for an MEMS inertial device. A test board of the device is fixed on a middle bracket at the bottom in a damp-heat test box; the damp-heat test box is mounted on a cantilever of the three-axis turntable; the direct-current power supply and the signal collector are respectively connected with the test box through a low-frequency electric connector; the control computer is connected with the three-axis turntable, the damp heat test box, the direct-current power supply and the signal collector; determining the highest stress level and the multi-stress level of the test sample; determining test sample groups, and constructing a test sample multi-stress acceleration model; determining a test point and a test truncation of the test sample; setting the test device to each stress level for testing, and after a specified test interval is reached, controlling a computer to acquire performance parameters and test stress of a test sample until the step test truncation requirements are met; according to the method, the research and development period is shortened, the test cost is reduced, and a theoretical and experimental basis closer to reality is provided for reliability design and life evaluation of the device.

The utility model relates to an inner step ultrasonic detection test block, which belongs to the technical field of ultrasonic nondestructive testing and comprises a test block body provided with a plurality of through holes along the length direction. The plurality of through holes are arranged on the test block body in a step shape, and the distance between the through hole at the head end and the upper end surface of the test block body is not equal to the distance between the through hole at the tail end and the lower end surface of the test block body. Compared with the prior art, the step test block is formed by hollowing the interior of the test block body, so that different step distributions can be formed when the test block body is positively placed and reversely placed, compared with the existing step test block, the number of steps of the test block is doubled, and as the appearance is not provided with actual steps, the two-side placement is of a stable structure.

The utility model discloses a multi-model step-by-step test fixing device and a test system of a split type two-stage compressor, and the multi-model step-by-step test fixing device of the split type two-stage compressor comprises a first-stage gear box body, a first-stage positioning plate, a second-stage gear box body and a second-stage positioning plate. The first-stage gear box body comprises a first driving shaft, a first main driving gear and a first gear box, one end of the first driving shaft is rotatably connected into the first gear box, the first main driving gear is located in the first gear box and connected to the first driving shaft in a sleeving mode, and a first assembling hole is formed in the first gear box; one side of the first-stage positioning plate is detachably connected to the first gearbox, and the other side of the first-stage positioning plate is detachably connected to the first-stage testing machine body; the second-stage gear box body comprises a second driving shaft, a second main driving gear and a second gear box. The performance of a multi-type single-stage machine body can be tested; and meanwhile, the dismounting difficulty can be greatly reduced, the time is saved, and the cost is effectively reduced.

This application relates to a method, system, electronic device, and storage medium for early warning of acute mountain sickness. The method includes: collecting physiological data from a step test conducted on a subject at a target plain altitude; generating at least one physiological principal component based on the step test data; performing cluster analysis on the at least one physiological principal component to obtain risk classification clusters; obtaining the actual high-altitude Lake Louise score of the subject in each risk classification cluster and calculating the score interval proportion to determine the risk classification label; and providing an early warning of acute mountain sickness to the user based on the risk classification label. This solves the problems in related technologies, such as high dependence on specialized testing equipment and laboratories, time-consuming testing processes, inability to screen individuals before they enter high altitudes, difficulty in achieving non-invasive and simple screening, and inability to effectively determine the acute mountain sickness tolerance of new subjects, thus hindering personalized early warning and prevention.

The utility model discloses a buffer temperature and pressure acquisition and analysis system, relates to the technical field of buffer test equipment, and aims to solve the problem that whether the structural design of an airborne buffer meets the low-temperature environment requirement of a project or not, research whether the structural design of the airborne buffer has risks or not and research whether related tests are sufficient or not. And whether local structure changes can generate beneficial changes and improvements can be solved. Comprising a buffer and a box body, the buffer is installed in the box body through an installation assembly, the telescopic end of the buffer penetrates through the box body to be exposed outside, and the interior of the box body communicates with external refrigeration equipment through an air pipe; a buffer solution in the buffer is connected with an analyzer through a connecting pipe, after the buffer is verified by a prototype structure, buffer solutions with various low-temperature characteristics are injected, low-temperature tests in multiple temperature ranges (multi-frequency step tests from-55 DEG C to 0 DEG C) are carried out, test data are recorded in detail, and the buffer solution with the optimal performance is screened out for the buffer to use.

The utility model discloses a polymer nanometer reinforced rubber strip strength test equipment after forming, it includes base, tow end, clamping end, tensile testing machine, removal structure, the one end of rubber strip that clamping end clamps, the tow end is used for clamping and through removal structure tow rubber strip's other end removal, forms the pulling of rubber strip, when pulling, through tensile testing machine tensile testing machine test tension, clamping end includes tray, and the tray is installed with carousel, and the motor is installed in the tray, and the drive end of motor is connected with carousel, and the sleeve is installed on carousel, still install two symmetrical clamping plates on the tray, and two clamping plates are connected with the pneumatic cylinder respectively. The test equipment in the utility model can test directly from the rubber strip of winding, need not cut a section in advance to test, and simultaneously, can carry out step -by -step test to every section of the rubber strip of winding, after testing, and let rubber strip keep winding, can improve test efficiency.

The invention discloses stepped vehicle-mounted BOX function test equipment and a stepped vehicle-mounted BOX function test method. The function test equipment comprises a stepped test cabinet and at least one modular test fixture. The test cabinet is provided with a plurality of mounting platforms which are arranged in a stepped and staggered manner, each platform is provided with a plurality of test stations, and a central control unit, a shared function test module and a standardized electrical interface are integrated in each platform; the test tool is detachably installed on the station and is provided with a positioning detection assembly and a plugging test assembly. And the function test module is electrically connected with the test fixture through the test cabinet and is in signal communication with the plugging test assembly so as to perform data interaction with the vehicle-mounted BOX during test. According to the invention, the parallel test of a plurality of vehicle-mounted BOXs and the rapid line change test of different types of products are realized by constructing the architecture of the universal platform and the special jig and combining the stepped spatial layout and the standardized rapid change interface, so that the test efficiency is high, and the space utilization rate is high.

The application discloses an aerogel thermal stability test system and a test method thereof, and belongs to the technical field of aerogel testing. The system comprises a test table and a control seat. An insulation groove for testing the thermal stability of aerogel is arranged at the top of the test table. A heating seat is fixedly connected to the inner side wall of the insulation groove. A test frame is connected to the top of the heating seat through a heat conduction plate. The piston plate is used to drive the oxygen supply through the downward pressing action, so that the mechanical pressure and the flame combustion are coupled in the physical mechanism. Not only the additional control gas circuit is saved, but also the real physical process of "pressure leading to structural deformation, and then affecting the flame impact effect" is simulated. The fire test under dynamic pressure is realized. The key working condition which is difficult to simulate in static or step-by-step test is realized. The protective performance of the material in the extreme dynamic event can be more truly evaluated.

The embodiment of the application provides a health assessment chair assembly, and belongs to the technical field of health assessment. The health assessment chair assembly comprises an assessment chair component, a first sensor component, a second sensor component and a controller. The first sensor component is configured to monitor the sit-to-stand state of a subject. The second sensor component is configured to measure the number of leg lifts of the subject in a step test mode. The controller is configured to obtain the number of sit-to-stand times of the subject in a sit-to-stand test and the time used in the sit-to-stand test according to the sit-to-stand state of the subject in the sit-to-stand test mode. When the controller determines that the subject is in an abnormal step state according to the sit-to-stand state of the subject in the step test mode, the step test mode is exited. The health assessment chair assembly of the embodiment of the application makes the test results of the in-place step test and the sit-to-stand test of the subject more objective.