10results about How to "Adaptable to the environment" patented technology

The invention relates to the technical field of textile tension tensile test, in particular to a tensile degree detection mechanism for textile processing, comprising: a positioning base; a closed machining rack is assembled on the positioning base in an annular angle adjusting mode, and a stretching annular transmission structure and a longitudinal clamping stretching structure are symmetrically assembled along the middle of the inner side of the closed machining rack. The stretching annular transmission structure is matched with the longitudinal clamping stretching structure to carry out stretching detection on the cut textile; the device has a dynamic stretching test function, a servo motor drives a worm, a worm gear, a nut and a screw to perform spiral transmission, so that the clamping plate frames clamping textile cloth are far away from each other to perform stretching test, and a stretching annular transmission structure is matched with the servo motor rotating in the opposite direction to realize twisting stretching test on the textile cloth; more complex stress conditions are simulated, and the equipped monitoring camera is used for carrying out visual picture recording on textile cloth in a stretching test, so that a basis for real-time test monitoring and subsequent analysis is provided.

The invention provides a thermally induced spatial posture error testing device and a testing method based on an inverse five-point method. The device comprises a measuring fixture and a test rod array device. The test rod array device comprises test rods and a mounting frame. The test rods are fixed on the mounting frame and arranged in a matrix. Five displacement sensors are fixed on the measuring fixture, which are respectively used to detect the displacement changes of five measuring points on the test rod. The five measuring points include a Z-direction measuring point, two X-direction measuring points and two Y-direction measuring points. The measuring fixture is used to be fixed on a machine tool spindle. The measuring fixture can move with the machine tool spindle and measure the postures of different test rods according to a preset measurement path, thereby obtaining the thermally induced posture errors of multiple test rods, and then obtaining the position and posture changes caused by heat at different positions in the machine tool working space, that is, the thermally induced spatial posture errors of the machine tool. The device has a high confidence level, good environmental adaptability and high precision retention.

The utility model is applicable to the technical field of energy storage batteries, and provides an FPCB (Flexible Printed Circuit Board) structure for monitoring an explosion-proof valve of a battery cell, which comprises an FPCB circuit board and a nickel sheet connected with the FPCB circuit board, the nickel sheet is arranged in a strip shape, the two ends of the nickel sheet are connected with the FPCB, the FPCB is located on the battery cell module, the nickel sheet is located above the battery cell module, and the thinned position is connected with the battery cell tab of the battery cell unit through thinning design. A plurality of thinning holes are formed in the thinning position of the nickel sheet, the thinning holes are hollow holes, and thinning connecting parts of the nickel sheet are formed among the thinning holes. The thinning connecting part has a safe state and a fusing state; in a safe state, the output current of the battery cell unit passes through the nickel sheet; when the battery cell unit is in the fusing state, the thinning connecting part is fused by the output current of the battery cell unit, so that the thinning connecting part is disconnected, the state of the explosion-proof valve is monitored, and the safety and the reliability of the energy storage battery can be better guaranteed.

This invention relates to the field of engines, providing an engine intake air preheating method, system, device, and engine. The method includes: acquiring ambient temperature and atmospheric pressure values ​​after the engine is powered on; if the ambient temperature is less than 0 degrees Celsius, heating the air entering the engine through a heating rod, and injecting fuel onto the surface of the heating rod based on a pre-constructed MAP map; after starting the engine, acquiring the engine speed, and if the engine speed is higher than a first set speed, completing the engine intake air preheating. This invention addresses the shortcomings of existing diesel engines in cold starts at high altitudes, enabling the minimum intake air preheating power to adaptively adjust with engine speed, altitude, and ambient temperature during diesel engine startup. It supplements the deficiencies of existing design methods and improves the environmental adaptability of diesel engines.

The application provides a self-repairable EVA adhesive film and a preparation method thereof, and relates to the technical field of solar photovoltaic module packaging. The self-repairable EVA adhesive film realizes a double self-repairing mechanism of photovoltaic module packaging adhesive film through Diels-Alder reaction group grafting and silane coupling agent microencapsulation technology, and the double self-repairing mechanism includes physical rearrangement repair and chemical bonding repair. While maintaining high light transmittance (>= 90%) and bonding strength (>= 96 N / cm), the aging resistance (Delta YI <= 3) and service life of the EVA adhesive film are significantly improved, and the problems that the traditional EVA adhesive film is prone to aging and micro-damage caused by mechanical stress in extreme environments are solved. The preparation process of the application is compatible with the existing production line, and has high industrial application value.

This invention discloses a deformable metal curtain wall based on an adaptive mechanical structure, relating to the field of building curtain wall technology. Flexible rubber frames are installed on both sides of the metal curtain wall panel, and supporting thin steel plates are installed at equal intervals inside the flexible rubber frames. Connecting rubber strips are symmetrically connected to one end of each flexible rubber frame, and limiting rubber blocks are connected to one end of each connecting rubber strip. Assembly notches are symmetrically opened on both sides of the metal curtain wall panel, and clamping vertical plates are installed on the two inner walls of the back of the metal curtain wall panel. This invention utilizes the cooperation between the flexible rubber frames and the stacked supporting thin steel plates to provide a certain degree of offset deformation capability when the building sways and misaligns due to environmental factors such as earthquakes and strong winds. This prevents adjacent curtain wall panels from separating and falling off in the event of misalignment, giving the overall curtain wall a certain degree of environmental adaptability and making installation and use more stable.

The invention discloses an environment-adaptive temporary plugging particle for turning fracturing as well as a preparation method and application thereof, and belongs to the technical field of oil and gas field fracturing temporary plugging. The environment-adaptive temporary plugging particles for turning fracturing are SiO2 inorganic solid particles of which the surfaces are coated with starch, and the temporary plugging particles are adhered to form a filter cake under the formation condition. The temporary plugging agent is used for solving the technical problems that in the temporary plugging fracturing steering construction process of an existing particle temporary plugging agent, plugging is not compact enough, the plugging effect on tiny holes among particles is poor, and consequently fracturing fluid is filtered out in target reservoirs such as a high-permeability layer and fractured cracks, and the technical problem needs to be solved urgently.

The invention belongs to the technical field of aircraft sensor design, and discloses a compact temperature and pressure composite sensor, which optimizes the layout of a pressure core body and a platinum resistor by designing a pressure core body placing cavity I and a pressure leading hole on a mounting sleeve into an eccentric structure and designing a platinum resistor placing cavity II and a lead hole into a bevel design. On the premise that the structural strength of a product is guaranteed, the size of the product is compressed to the maximum extent, miniaturization and light weight of the composite sensor can be achieved, and certain environmental adaptability is achieved.

The invention relates to a preparation method of an environment-friendly functional metal coating, in particular to a preparation method of a passivator for sustainable corrosion prevention of a chromium-free zinc-aluminum metal coating, which comprises the following steps: preparing layered double hydroxides (Zn-Al-LDHs) from a zinc source and an aluminum source in a molar ratio of 3: 1; one or more of phosphate, molybdate, borate, vanadate, rare earth metal salt and the like are used as interlayer anions, and the Zn-Al-X-LDHs intelligent passivator is synthesized. When 0.5-3% of the passivator is added into the zinc-aluminum coating and cured at the temperature of 240-360 DEG C, the passivator such as molybdate and the like can be released through responsiveness exchange and stress of the passivator and chloride ions in an intercalation layer, continuous passivation of chromium-free coating metal powder and a matrix is achieved, and the anti-corrosion effect is excellent.

The present application relates to high-speed rail uplink communication security technical field, and proposes a kind of RIS assisted high-speed rail uplink communication security method under multiple eavesdropping cooperative attack.Proposing a kind of RIS assisted high-speed rail uplink communication security method under multiple eavesdropping cooperative attack.For the security threat that multiple passive eavesdroppers exist along the high-speed rail and carry out centralized cooperative interception through maximum ratio combination, a two-hop uplink security communication model from high-speed train to dispatching room is constructed: the first hop uses RIS assisted millimeter wave to realize the uplink wireless communication from high-speed rail to relay, and enhances the legal signal and suppresses eavesdropping by regulating RIS reflected signal;The second hop uses power line communication to transmit signal to terminal, and plays the high security advantage of wired link physical isolation.The present application takes the maximization of system average security rate as the goal, and jointly optimizes mobile relay beamforming vector, RIS phase shift matrix and transmission power allocation;Especially for the extreme environment that multiple eavesdropping cooperative interception superposition system only has statistical channel state information, leading to the optimization problem that objective function falls into complex random expectation item which is extremely difficult to solve, introduce deterministic equivalent transformation to convert it into deterministic form, and solve optimal security parameter configuration by combining alternating optimization algorithm, finally execute by hardware controller.The present application effectively breaks through the double obstacles brought by multiple eavesdropping cooperation and channel uncertainty, and significantly improves the anti-interception ability of high-speed rail uplink communication.