30results about How to "Realize the test" patented technology

The invention relates to a wind tunnel test model for an aerodynamic braking device, which comprises a simulation car roof, a wind deflector, a braking wind wing, angle adjusting connecting rods and a connection switch device, wherein the wind deflector is arranged above the simulation car roof; the braking wind wing is arranged in the middle of the wind deflector and mounted on the connection switch device; one end of each angle adjusting connecting rod is connected with the connection switch device, and the other end is connected with the braking wind wing; the opening angle of the braking wind wing can be adjusted through the angle adjusting connecting rods; and through the adjustment of the connection switch device, the bearing force and moment of the braking wind wing are measured separately, or the whole bearing force and moment of the braking wind wing and the wind deflector are measured simultaneously. Compared with the prior art, according to the multifunctional aerodynamic braking wind tunnel test model used for aerodynamic braking test research, wind tunnel test verification research can be performed on the aerodynamic force and the fluid field of the aerodynamic braking device from multiple angles, and the wind tunnel test model has the advantages of accuracy in analyzing the aerodynamic braking device, multiple functions and the like.

The invention relates to a method for determining a state of at least one component of a control unit, wherein a temperature of the at least one component is determined, wherein a type of a temperature change is detected and recorded for a number of temperatures that are determined over a time period, wherein recorded temperature changes are used to determine the state. The invention further relates to an arrangement for determining a state of at least one component of the control unit, a control unit, a computer program, and a computer program product.

The invention discloses a comparative automatic wheel tracking tester. The comparative automatic wheel tracking tester comprises a rack, testing vehicles arranged in the rack and a driving device for driving the testing vehicles to move back and forth, wherein at least two testing vehicles are arranged; an object storage platform is further arranged at a part, located below the testing vehicles, of the rack; the object storage platform is detachably connected with a plurality of positioning plates; the two positioning plates form a fixing groove for fixing a concrete test piece. The comparative automatic wheel tracking tester has the advantages and effects that the plurality of testing vehicles are arranged at the upper end of the rack; meanwhile, the object storage platform arranged below the rack can be used for fixing the concrete test pieces with different sizes and the tester can be used for carrying out tests on the concrete test pieces with different types at the same time and carrying out different pressure tests on the whole concrete test piece, so that detection effects, generated under different environments, different types and different pressure, on the concrete test pieces can be more rapidly and directly compared.

The invention discloses a test box with a concealed wire type hinge box door. The test box comprises a box body, a box door, a test device, a controller, a cable, a cable protection device, a switch device and a fourth spring telescopic rod, wherein one end of the box door is rotationally arranged on the box body; the test device is arranged in the box body; the controller is fixedly arranged on the box door; the cable is used for connecting the controller with the test device; the cable protection device is arranged on the box body; the switch device is used for fixing the other end of the box door; and the two ends of the fourth spring telescopic rod are rotationally arranged on the box body and the box door respectively.

The invention discloses a test box with a hidden-line hinged box door, comprising a box body, a box door rotatably arranged on the box body at one end, a test device arranged in the box body, a controller fixedly arranged on the box door, a The cable connected between the controller and the test device, the cable protection device installed on the box body, the switch device used to fix the other end of the box door, and the fourth rotating device installed on the box body and the box door at both ends. Spring telescopic rod.

The invention provides a di-hole crossing tunnel transparent soil model testing apparatus and a testing method thereof. The testing apparatus comprises a transparent model groove arranged at a test platform, two industrial cameras arranged outside a transparent model groove, and two laser emitters. The transparent model groove comprises flexible sidewalls and a base plate arranged below the flexible sidewalls. While testing, two laser emitters form a speckle tangent plane in the transparent soil, liquid in a hollow cylinder water bag can be discharged according to design, two industrial cameras synchronously take a tangent plane picture in the transparent soil, and a digital image processing technology is used for analysis of the tangent plane picture. The testing method comprises the following steps: designing an experiment scheme, assembling a transparent model groove, making a tunnel model, arranging the industrial cameras, and performing tests. According to the testing apparatus, by changing an angle of the parallelogram transparent soil model groove, the transparent soil model test for crossing tunnel excavation with any angle is realized, and the test cost is saved.

The invention discloses an energy-saving type hydraulic pump durability testing table with hydraulic analog loading. The energy-saving type hydraulic pump durability testing table is composed of a power guide module, a power output module, a cooling module, a rectifier bridge way, a loading module, an energy recovery module and an oil tank. According to the energy-saving type hydraulic pump durability testing table, energy is stored in an energy accumulator of the power guide module, and therefore the energy-saving function is achieved. According to the energy-saving type hydraulic pump durability testing table, a variable displacement motor output shaft of the loading module is coaxial with a second shaft and an overrunning coupler of the energy recovery module, a hydraulic pump is driven to rotate, and energy recovery is achieved. Hydraulic analog loading of the energy-saving type hydraulic pump durability testing table is achieved by adjusting the system pressure, and the hydraulic pump durability test rated conditions can be met. The energy-saving type hydraulic pump durability testing table can be used for testing hydraulic pumps in multiple specifications under the condition that the modules are kept unchanged.

A diaphragm stroke experiment device and a test method belong to the technical field of diaphragm pump experiment devices, and in particular relate to a diaphragm stroke experiment device and a test method. The invention provides a diaphragm stroke experiment device and a test method which are easy to use, improve production efficiency and reduce production cost. The diaphragm stroke experiment device of the present invention includes a cavity, and is characterized in that: one side of the cavity is an opening, and a support is arranged in the cavity corresponding to the opening; Orifice; a support frame is provided outside the opening, and a screw rod extending into the opening is provided on the support frame, and the screw rod is fixed on the support frame through the first positioning nut inside the support frame and the second positioning nut outside the support frame.

The invention belongs to the technical field of diaphragm pump experimental devices and particularly relates to a diaphragm stroke experimental device and method. The diaphragm stroke experimental device and method are convenient to use, improve production efficiency and lower production cost. The diaphragm stroke experimental device comprises a cavity and is characterized in that one side of the cavity is provided with an opening, and a support is arranged in the cavity and corresponds to the opening; the upper portion of the cavity is provided with a liquid filling port, and the lateral side of the liquid filing port is provided with an overflow port; a supporting frame is arranged outside the opening, a threaded rod stretching into the opening is arranged on the supporting frame, and the threaded rod is fixed to the supporting frame through a first locating nut in the supporting frame and a second locating nut outside the supporting frame.

The invention belongs to the field of aviation special equipment testing, particularly relates to a two-wire detector of an intercom system. The two-wire detector comprises a two-wire detector device, 28 V direct-current power supply, a low-frequency signal simulator, a digital multimeter, a digital millivolt meter and a low-impedance headphone. The low-frequency signal simulator and the digital multimeter are connected with the two-wire detector device respectively. The digital millivolt meter is connected with the digital millivolt meter two-wire detector device and the low-frequency signal simulator respectively. The low-impedance headphone is connected with the two-wire detector device and the digital multimeter respectively. The two-wire detector is strong in versatility; by the aid of the two-wire detector, intercom signal detection can be realized, crosslinking tests of the two-wire detector with ultrashort wave and shortwave radio can be performed; the two-wire detector can be used for detecting functions of collision warning tone, autopilot warning tone, centralized warning tone, ground proximity warning tone, DME (distance measuring equipment) warning tone and decision height warning; and the two-wire detector can be used for detecting performance of hotline communication of airborne tasks, stimulating working states of the intercom system on a plane and detecting intercom performances of an entire set of intercom system, and can realize tests on various models of intercom systems.

The invention discloses an intelligent two-way multi-angle overturn model test device and test method. The intelligent two-way multi-angle overturn model test device comprises a model loading counter-force device, a left-right overturn device, a front-back overturn device and a box cut, wherein the model loading counter-force device can achieve 1 / 2 contraction scale or free overall model size assembly, the left-right overturn device can achieve free quantitative overturn within the scope ranging from 0 degree to 60 degrees, the front-back overturn device can achieve free quantitative overturn within the scope ranging from 0 degree to 90 degrees, the whole system can achieve the left-right overturn and the front-back overturn multi-angle combination overturn, the visualized monitoring of the whole process can be achieved by embedding tempered glass into front-back counter-force beams, the manufacturing of a model and the section view after being taken out and reservation of the model after testing are facilitated, and simulation of deformation damage characters and stratum motion laws of stratums with different geological conditions, stratum dip angles and different model sizes is achieved.