394 results about "Environmental tests" patented technology

The invention belongs to the technical field of material and coating corrosion tests, and relates to a whole sea area atmospheric environment comprehensive simulation test system, which adopts an integrated structural design, and performs integrated coupling of various environmental test simulation capabilities on the basis of a single-function test box. The device has the test capabilities of metal material corrosion acceleration test, organic composite material and coating aging evaluation and the like, can simulate the global marine atmospheric environment and coupling of multiple factors such as air temperature, humidity, salt mist and ultraviolet irradiation, can perform comprehensive test evaluation on the whole-sea-area marine atmospheric environment of typical materials, avoids the problem of inconvenient operation of corrosion tests, and has a wide application prospect. The device can be used for corrosion and ultraviolet aging tests of conventional marine atmospheric environment corrosion media, polar regions, tropical regions and other extreme marine atmospheric environments, and material corrosion tests for simulating marine splash zones, tidal range zones and the like. The device is simple in structure and convenient to operate, and coupling of multiple factors of high and low temperature, humidity, salt mist, ultraviolet illumination and periodic infiltration can be achieved.

To provide an environmental test apparatus capable of performing a long-term deterioration test in which a test sample is exposed for a long period to methane-dissolved water under a low-temperature, high-pressure environment simulating a seafloor environment.SOLUTION: An environmental test apparatus 100 according to an embodiment is an environmental test apparatus for performing a long-term deterioration test in which a test sample is exposed to methane-dissolved water under an environment simulating a seafloor environment where methane hydrate is present and includes: a pressure-resistant vessel 110 which houses the test sample and in which the methane-dissolved water at a temperature and pressure corresponding to the seafloor environment flows through the test sample; a cooling unit 120 that cools and maintains the pressure-resistant vessel 110 at the temperature; and a pressurizing circulation unit 130 that pressurizes the methane-dissolved water flowing out from an outlet 110b of the pressure-resistant vessel 110 and sends it toward an inlet 110a of the pressure-resistant vessel 110.SELECTED DRAWING: Figure 1

The invention discloses a low-speed compact wind tunnel experimental device suitable for building outdoor wind environment testing, which comprises a matrix fan system and a modularized segmented structure (sequentially comprising an air inlet section, a rectification section, a model placement area and an air outlet section), and all the sections are connected through flange plates and sealing parts to guarantee the sealing performance. Wherein the matrix fan system is composed of 4 * 4 fans, each fan is subjected to independent frequency modulation through a frequency converter, and the airflow speed is actively adjusted; each section in the modularized segmented structure is an independent module; the air inlet section is used for mixing jet flow generated by the matrix type fan system; a plurality of rectifying parts are arranged in the rectifying section, and the uniformity, turbulence intensity and wind speed gradient of airflow are passively adjusted by configuring different parts, so that specific wind field environment characteristics required by an experiment are accurately simulated; the model placing area is provided with a rotatable disc used for placing a building reduced scale model required by an experiment. The air outlet section is located at the tail end of the wind tunnel experiment device and is provided with an airflow outlet with an adjustable cross section area.

The invention discloses salt spray environment test equipment for environment test, and belongs to the technical field of environment test. The device comprises a test box, a spraying assembly is installed in the test box, a plurality of fans are fixedly installed in the test box, a plurality of heaters are fixedly connected in the test box, a test rack is placed in the test box, a clamping assembly is installed on the test rack, and a simulation assembly is further installed on the test rack. The simulation assembly comprises a shielding assembly, an impact assembly and a friction assembly, the shielding assembly comprises a supporting frame, and a hydraulic cylinder is fixedly installed on the supporting frame. In the circulating corrosion test process, the hydraulic cylinder can be started, atomized saline water is prevented from falling on a sample, and the shielding time can be manually set, so that a control test is formed, that is, one part of the sample is shielded, the other part of the sample is not shielded, and different shielding time can be set on different samples, so that the accuracy of the control test is improved. And test results are enriched.

The invention relates to the technical field of programmable multi-mode integrated control, in particular to an integrated control platform of a programmable multi-mode environmental test chamber, which comprises a multi-mode sensing unit, a dynamic logic reconstruction unit, a virtual verification sandbox unit and a feedback optimization unit, the multi-modal sensing unit synchronously collects parameters such as temperature and humidity to generate environment data streams, the dynamic logic reconstruction unit analyzes parameter interaction by using a long-short-term memory neural network in combination with a double-attention mechanism to generate an optimal control logic chain, the virtual verification sandbox unit constructs digital twin pre-execution control logic, and the virtual verification sandbox unit constructs digital twin pre-execution control logic. The physical actuator is activated after the error rate is ensured to be lower than a preset threshold value, the feedback optimization unit dynamically adjusts the function block selection weight according to the actual response time delay and the energy consumption deviation, and a high-precision and low-energy-consumption intelligent control scheme is provided for the reliability test of high-end products in the fields of aerospace, electronic components and the like.

The invention discloses a hot chamber high-voltage electrical penetration assembly composite stress aging state evaluation method and a test device, and relates to the technical field of electrical equipment aging tests, and the method specifically comprises the steps: synchronously obtaining the leakage current, the partial discharge amplitude spectrum, the temperature distribution matrix and the high-frequency current spectrum of a to-be-tested electrical penetration assembly; extracting a time domain feature from the leakage current, extracting a frequency domain feature from the partial discharge spectrum, and extracting a space gradient feature from the temperature field; carrying out weighted fusion on the time domain features, the frequency domain features and the spatial gradient features by adopting an attention mechanism; reducing the 128-dimensional features after the attention mechanism fusion to three-dimensional spatial features; processing the fused three-dimensional space characteristics by adopting a bidirectional long-term memory network to obtain a residual life prediction value of the electrical penetration assembly; judging the aging stage of the electrical penetration assembly according to the residual life prediction value; presetting an aging threshold value, and when the predicted aging stage exceeds the threshold value, automatically adjusting the temperature and humidity parameters of the environmental test box to a safe working condition; the method is used for solving the problem that a traditional evaluation result is inaccurate.

The invention relates to an environmental test box for realizing high and low temperature rapid alternating circulation, which is mainly applied to the technical field of environmental test equipment. The test box is provided with a high-temperature chamber and a low-temperature chamber which are independent from each other, a thermal insulation layer is arranged between the two chambers, and the test box can respectively keep constant temperature environments at the highest temperature of + 75 DEG C and the lowest temperature of-50 DEG C; during a test, a sample is placed in the test bed, and the rotating shaft structure driven by the motor periodically rotates in a reciprocating manner or rotates in the same direction among different temperature zones, so that high-low temperature rapid alternating circulation is realized. The operation mode of the motor is controlled through the control system so as to simulate the accelerated aging process of the component in the temperature rapid alternating environment. According to the test box, through the design of the control system, the forced convection fan and the middle thermal insulation layer, it is guaranteed that the temperature switching process is rapid, uniform and stable. Compared with the prior art, high and low temperature circulation can be completed without overall heating and cooling of the interior of the test box, and the test box has the advantages of being high in test efficiency, capable of remarkably improving the reliability and accuracy of the high and low temperature alternating circulation test of the sample and the like.

The present invention discloses a test device for a tumbling pretreatment stand for bulletproof vests and a method for using the same. The device comprises a base, wherein universal wheels are respectively installed at the corners of the base, the bottoms of the universal wheels are in contact with the inner wall of the bottom of a walk-in environmental test chamber, the surface at one end of the base is connected to the two ends of a push rod, the surface at one end of the base is installed with a driving device, the driving device is connected to a conventional roller through a support plate, the outer ring of the conventional roller is in contact with two groups of symmetrically arranged roller frames, and the outer ring of the conventional roller is equidistantly provided with a plurality of first perforations. The present invention mainly solves the problem that when a combatant wears a bulletproof vest and performs various tactical actions (such as lying down, lying down, and rolling), the bulletproof vest will be deformed with the various tactical actions, causing the combatant to feel uncomfortable or even unable to wear the vest, thereby affecting the combatant's tactical actions and life safety. The present invention also solves the problem of extremely important quality performance testing of bulletproof vests in different battlefield environments.

The invention relates to a self-adaptive control method, system and device for environment test equipment, and the method comprises the following steps: S1, data collection: collecting environment detection data and data of a corresponding actuator according to a to-be-controlled physical quantity; s2, selecting or constructing a control object according to the physical quantity to be controlled; s3, performing online identification operation when an identification condition is met, otherwise, directly executing the step S4; s4, feedforward and feedback: calculating feedforward compensation and feedback compensation according to the value of the to-be-estimated quantity, and superposing the feedforward compensation and the feedback compensation to obtain a control instruction; and S5, performing constraint allocation on the actuator: performing saturation constraint processing on the control instruction to obtain a control quantity of the corresponding actuator. Joint online identification can be carried out on the to-be-estimated quantity only through perturbation excitation; different loads and test object states are automatically adapted; saturation constraint processing is adopted; the model and the algorithm are low in calculation amount, and precision, speed and engineering realizability are considered.

The invention provides a dynamic cooperative control system of a high and low temperature environment chamber and a sunlight simulation system, and belongs to the technical field of environment testing. The system establishes a dynamic coupling model, integrates a plurality of core environment parameters, optimizes a combination problem in a high-dimensional parameter space by adopting a quantum annealing algorithm, and adopts edge computing nodes to realize the dynamic cooperative control of the high and low temperature environment chamber and the sunlight simulation system. And real-time issuing of the control instruction is realized. In addition, the refrigerating / heating power and the illumination intensity are dynamically adjusted through real-time sensor data, and closed-loop control over environmental parameters is achieved. The problem that dynamic environment parameters are difficult to cooperatively adjust in real time due to independent control of a high and low temperature environment chamber and a sunlight simulation system in a traditional environment testing system is solved.

According to the high-voltage wiring harness testing system and the control method thereof, the high-voltage wiring harness testing system integrates the mechanical strength testing unit, the environment testing unit and the electrical performance testing unit, vibration, high-low temperature and strong current can be applied at the same time, electric, thermal and mechanical vibration multi-physical field coupling is achieved, and the testing efficiency is improved. The test units are synchronously controlled by the central control system, so that the actual influence of a multi-scene superposition factor on the wire harness can be simulated; a sensor network in the system collects vibration test data, temperature test data, current test data and insulation performance data in real time and transmits the data to a central control system, and the central control system analyzes the performance of a to-be-tested high-voltage wire harness under the current test working condition by using the test data and then generates a test report. Therefore, the accuracy of the test result and the test efficiency are effectively improved.

The invention discloses a linear cooling control method of an environmental test box and the environmental test box. The method comprises the following steps: acquiring the temperature in a to-be-controlled environment test box, the outlet temperature of an evaporator, the liquid supply temperature of a condenser, the suction pressure of a variable-frequency compressor and the exhaust pressure of the variable-frequency compressor; according to the temperature in the box, the evaporator outlet temperature, the condenser liquid supply temperature, the frequency conversion compressor suction pressure, the frequency conversion compressor exhaust pressure and preset parameters, the frequency conversion compressor rotating speed, the electronic expansion valve opening degree, the evaporator fan rotating speed and the condenser fan rotating speed of the to-be-controlled environment test box are calculated; based on the calculated rotating speed of the inverter compressor, the calculated opening degree of the electronic expansion valve, the calculated rotating speed of the evaporator fan and the calculated rotating speed of the condenser fan, the inverter compressor, the electronic expansion valve, the evaporator fan and the condenser fan of the to-be-controlled environment test box are controlled respectively, and linear cooling control over the to-be-controlled environment test box is achieved.

The invention relates to the technical field of electrical detection, in particular to a multi-stress coupling environment reliability testing method for an electricity consumption information acquisition terminal. Comprising the steps of applying a combined stress field to an electricity utilization information acquisition terminal through an environment test box; acquiring power utilization information acquisition terminal parameters; the method comprises the following steps of: capturing metering pulse response and carrier communication interaction signals of an electricity utilization information acquisition terminal under the excitation of a combined stress field by utilizing an electrical sensor, extracting carrier signal-to-noise ratio data and metering reference drift data, and generating a reference voltage compensation coefficient and an impedance matching threshold value; projecting the carrier signal-to-noise ratio data to an impedance matching threshold value, and constructing a stress failure envelope surface according to a hardware overload protection threshold value; and mapping the communication quality distortion residual vector to a stress failure envelope surface, and calculating a reliability life prediction value. According to the method, a uniform excitation environment is constructed, and performance degradation of different dimensions is uniformly quantified into accumulative stress damage integral, so that the comprehensive anti-interference capability of the terminal in a multi-stress coupling environment can be truly reflected.

The embodiment of the invention discloses a linear cooling control method for an environmental test chamber, which comprises the following steps of: determining the rotating speed of a variable-frequency compressor of each equally divided cooling section according to a cooling theoretical parameter of each equally divided cooling section, a second cooling parameter of the environmental test chamber, a linear cooling rate and an operating parameter of the variable-frequency compressor; according to the cooling theoretical parameter of each equally divided cooling section, the third cooling parameter of the environmental test box, the linear cooling rate and the electronic expansion valve operation parameter, determining the electronic expansion valve step opening of each equally divided cooling section; according to the first operation data of the inverter compressor and the evaporator in each equally divided cooling section, the final temperature of the environmental test box, the operation parameters of the evaporator fan and the linear cooling rate, the rotation speed of the evaporator fan in each equally divided cooling section is determined; and according to the second operation data of the inverter compressor and the condenser in each equally divided cooling section, the operation parameters of the condenser fan and the linear cooling rate, the rotating speed of the condenser fan in each equally divided cooling section is determined.

The invention belongs to the technical field of low-temperature facility environment testing, and discloses a temperature and pressure environment test chamber and a test method thereof. The main body of the temperature and pressure environment test chamber is a test chamber body, and an external gas inlet branch on the test chamber body is used for conveying gas to the test chamber body; the air pressure adjusting branch is used for adjusting the pressure of the air inlet branch; the exhaust branch is used for exhausting gas in the test cabin body; the circulating gas branch is used for gas circulation in the test cabin body; the liquid nitrogen injection branch comprises a liquid nitrogen injection branch and a liquid nitrogen discharge branch, the liquid nitrogen injection branch is used for injecting liquid nitrogen into the test cabin, and the liquid nitrogen discharge branch is used for discharging nitrogen of the liquid nitrogen buffer tank. The test method comprises an air temperature and pressure environment test method and a nitrogen temperature and pressure environment test method. The temperature and pressure environment test chamber and the test method thereof are applied to the field of large low-temperature facilities and the field of temperature and pressure test such as aerospace exploration, plateau environment and high-altitude environment, and have practical value.

The invention relates to the field of automation, and discloses an EMS test method and system for a PLC, and the method comprises the steps: obtaining the basic EMS data and data fluctuation characteristics of a to-be-tested PLC according to the equipment parameters of the to-be-tested PLC; collecting electromagnetic interference data of the target environment, obtaining electromagnetic interference characteristics of the target environment according to the electromagnetic interference data, generating a target environment test case according to the electromagnetic interference characteristics of the target environment and the basic test case, and dividing the to-be-tested PLCs completing the basic test into an experiment test group and an environment test group; and if the use electromagnetic immunity of the target environment is consistent with the experimental electromagnetic immunity of the target environment, obtaining the electromagnetic immunity of the to-be-tested PLC and the updated target environment test case. According to the method, the cloud database and the real-time electromagnetic interference data are combined to generate the customized test case for the target environment, so that the accuracy and practicability of the EMS test are remarkably improved.

The invention provides a roadbed top surface equivalent maximum bearing capacity determination method and device considering a seasonal effect, and relates to the technical field of road engineering.The method specifically comprises the steps that firstly, a sample is manufactured based on a roadbed to be evaluated, and an environmental parameter combination is randomly generated according to the annual seasonal parameter range; constructing a simulation environment test to obtain related parameters and roadbed top surface equivalent maximum bearing capacity, constructing a response prediction model through data driving, weighting roadbed characteristics and response parameters, analyzing to generate a comprehensive evaluation coefficient, comprehensively evaluating roadbed performance, and optimizing an environment parameter combination by using a genetic algorithm in combination with the response prediction model. And constructing a bearing capacity prediction model by means of a long-short-term memory network, and dynamically predicting the equivalent maximum bearing capacity of the roadbed in the current time period. According to the method, the defects of static analysis in the prior art are overcome, and the problem that the result is inaccurate due to inconformity between reality and hypothesis in the prior art is solved.

The invention provides low-frequency fatigue tensile loading equipment in a marine environment, which comprises an environmental box system, the environmental box system comprises a test box, a circulating system and a temperature control system, a solution for simulating the marine environment is arranged in the test box, the circulating system is communicated with a solution area in the test box, and the temperature control system is used for controlling the temperature of the solution; the truss type loading equipment is arranged in the environment box system, the truss type loading equipment comprises an upper chord beam frame, a variable load structure is connected to the upper chord beam frame, lower chord clamping nodes are arranged on the lower portions of the two sides of the upper chord beam frame respectively, and a sample is clamped between the lower chord clamping nodes and located in a solution area in the test box. According to the invention, various acidic and alkaline marine environment working conditions can be simulated, and various corrosive solution environments can be simulated; environmental conditions such as dry-wet cycle and freeze-thaw cycle are simulated. The limitation that a traditional environment test box cannot apply variable loads is broken through. And a test condition closer to a service state is provided for a durability test.

The present invention relates to the field of temperature and humidity inspection, and specifically to a temperature and humidity field inspection device and method for environmental test equipment detection. It includes a temperature and humidity field inspector and a cable winding and collecting mechanism; a plurality of channel interfaces are arranged in an array on the top of the temperature and humidity field inspector, and the temperature and humidity field inspector is connected with a signal transmission cable through the channel interfaces; the cable winding and collecting mechanism includes an inner rod assembly, an outer rod assembly, a fixed column, a threaded knob, a moving table and a bracket. Multiple groups of the inner rod assembly and the outer rod assembly are evenly distributed in a circular shape around the fixed column, and multiple groups of the inner rod assembly and multiple groups of the outer rod assembly are staggered; the inner rod assembly includes an inner rod, a connecting rod a and a connecting rod b. Two connecting rods a are arranged in parallel. The inner rod, the connecting rod a and the fixed column form a parallelogram mechanism a, and the inner rod extends outward in the horizontal direction to form a winding part a; the outer rod assembly includes an outer rod, a connecting rod c and a connecting rod d. The present invention adaptively adjusts the length of the wound cable by adjusting the distribution of the inner rod and the outer rod.

The invention discloses a backlight structure with an NFC (Near Field Communication) function, which comprises a backlight rubber frame of which the bottom non-NFC function area is provided with a locally injection-molded iron frame; the heat dissipation copper foil and the module FPC are attached to the upper surface of the iron frame; the difference between the shrinkage rate of the iron frame and the shrinkage rate of the backlight rubber frame is smaller than a preset threshold value, so that material deformation is restrained when the environment temperature changes. The NFC function requirement of the whole machine is met, material environment testing characteristics are considered, and compared with a pure rubber frame, the backlight intensity is high, and material environment testing performance is compatible.

The invention relates to the technical field of electromagnetic shielding cabinet testing, in particular to a dynamic performance testing device and method for an electromagnetic shielding cabinet, and the device comprises an environment testing cabin which is used for placing a to-be-tested cabinet and providing a controlled electromagnetic background environment; the dynamic load simulation system is mechanically connected with the to-be-tested cabinet and is used for applying physical excitation with preset strength to the to-be-tested cabinet so as to simulate structural deformation of the to-be-tested cabinet in a working state; and the signal transmitting system comprises a transmitting antenna arranged outside the to-be-tested cabinet and is used for generating an electromagnetic signal covering a preset frequency band. The dynamic load simulation system simulates vibration, cabinet door opening and closing and other actual dynamic working conditions, the temperature and humidity adjusting module is combined to simulate different climatic environments, meanwhile, the high-speed synchronous triggering module is used for achieving high-precision synchronization of dynamic load applying, electromagnetic signal transmitting and data collecting, multi-working-condition collaborative simulation and precise synchronous testing are achieved, and the testing efficiency is improved. And the authenticity and the reference value of a test result are greatly improved.

The present invention discloses a dual-duct environmental test chamber, which includes: a test chamber main body, the test chamber main body includes a working cavity, a cooling duct and a heating duct, wherein the working cavity is arranged on one side of the test chamber main body, and the cooling duct and the heating duct are both arranged on the other side of the test chamber main body. In addition, both ends of the cooling duct and both ends of the heating duct are respectively connected to the working cavity. The test chamber main body also includes a heater, a water-cooled heat exchange system and a cooling system, wherein the heater and the water-cooled heat exchange system are arranged in the heating duct, and the cooling system is arranged in the cooling duct. The dual-duct environmental test chamber of the present invention separates the heating and cooling duct of the traditional test chamber into two isolated ducts, the heating duct and the cooling duct, so that the heating process and the cooling process of the test chamber can be carried out through the corresponding independent ducts.

The invention belongs to the technical field of electrical assembly, and discloses a cable threading structure and an environmental test box. The environment test box comprises a box body and a cable threading structure, the cable threading structure comprises a threading piece, a fixing assembly and a blocking assembly, the threading piece is provided with a threading hole penetrating through the first side wall and the second side wall of the threading piece, a cable can penetrate through the threading hole, the inner wall of the threading hole is provided with a heat insulation piece, the fixing assembly comprises a first fixing piece, a second fixing piece and an attaching piece, and the attaching piece is fixedly connected with the fixing assembly. The first fixing piece and the second fixing piece can be buckled with each other, at least one of the first fixing piece and the second fixing piece is fixedly arranged on the first side wall, the threading hole can be blocked when the first fixing piece and the second fixing piece are buckled, the attaching pieces oppositely arranged on the first fixing piece and the second fixing piece can deform and fix a cable, and the blocking assembly is arranged on the second side wall and used for blocking airflow or impurities from passing through the threading hole. The threading piece is arranged to be a wall face of the box body, and a cable can penetrate into or out of the box body through the cable threading structure. The problems of heat accumulation, air leakage, condensation and signal interference can be solved, and the test reliability of the environment test box is improved.

The present application provides a humidifying device and an environmental test device. The humidifying device includes a first humidifying heater for heating water in a humidifying container, a second humidifying heater having an output capacity larger than that of the first humidifying heater, and a humidifying control unit. The humidifying control unit causes the first humidifying heater to continuously operate when a required output is in a range belonging to a first region and in a range belonging to a second region having a higher required output than the first region, and controls the first humidifying heater according to the size of the required output when the required output is in the range belonging to the first region by stopping the second humidifying heater, and controls the second humidifying heater according to the size of the required output when the required output is in the range belonging to the second region in a state where the first humidifying heater is operated. Accordingly, confusion in humidity control between the regions having different sizes of the required output of the heater can be suppressed.

The invention discloses a rotational flow mixer, a multi-fuel spray gun and a thermal barrier coating environment test assessment device, and the rotational flow mixer comprises a mixer shell; the gas / liquid fuel nozzle comprises a gas fuel supply device and a liquid fuel supply device; the liquid fuel supply device comprises a liquid fuel inlet connector, a liquid fuel inlet pressure stabilizing cavity and a liquid fuel injection opening, and a liquid fuel swirler is arranged in the liquid fuel injection opening. The gas fuel supply device comprises a gas fuel inlet connector, a gas fuel inlet pressure stabilizing cavity and a gas fuel injection opening, and a gas fuel swirler is arranged in the gas fuel injection opening. And the air / particle cyclone is arranged in the cavity of the mixer shell. The swirl mixer at the head of the flame spray gun is designed into two fuel channels, and the swirler is used for pre-swirling the fuel, so that the initial atomization effect of the fuel is improved, and it is ensured that different types of fuel can be well combusted on the flame spray gun.

The invention relates to the technical field of test equipment design and manufacturing, in particular to an underwater vehicle head section product environment test clamp. The underwater vehicle head section product environment test clamp comprises a base and a mounting frame, the base comprises a bottom plate, side plates and reinforcing ribs, the bottom plate is fixedly connected with the side plates, and the reinforcing ribs are fixedly connected between the bottom plate and the side plates; the bottom plate is provided with a mounting hole used for being connected with a vibration test bed, an impact test bed or a constant acceleration test bed; the mounting frame comprises a base plate, a connecting plate and a rubber gasket, the base plate is provided with a mounting structure for mounting a product, the rubber gasket is arranged on the mounting surface of the base plate, and the connecting plate is fixedly connected with the base plate; wherein the mounting frame is detachably and fixedly connected with the side plates of the base through the connecting plates.

The utility model discloses a hydraulic control combined test device, which comprises a module integrated board, an MCU main chip, an RS232 communication interface module, an RS422 communication interface module, a CAN communication interface module, a voltage / current signal module and a DC power supply module are arranged on the module integrated board, and the DC power supply module supplies power to each element on the module integrated board; the MCU main chip is used for simulating operation data signals of an angle encoder, a stay wire sensor, a horizontal sensor, a force sensor, an oil pressure sensor and a hydraulic equipment upper computer which are in combined communication with hydraulic control. The hydraulic control combination test device disclosed by the utility model can simulate operation data and signals of the hydraulic equipment upper computer and various sensors, meets the working requirements of the hydraulic control combination, enables the hydraulic control combination to operate in the test cabinet, achieves the purpose of independently carrying out environment test on the hydraulic control combination, and improves the test efficiency. And the accuracy of hydraulic control combination environment test results is ensured, and the practicability is high.

The application discloses a high-altitude environment laboratory safety protection system, which comprises a control room, a transition room and a high-altitude environment laboratory. The control room is communicated with the transition room through a first transition door and a third pipeline, and the transition room is communicated with the atmosphere environment through a first pipeline. The transition room is communicated with the high-altitude environment laboratory through a second transition door, a second pipeline and a fourth pipeline. A first control component and a second control component are respectively formed on the first pipeline and the second pipeline in the transition room. A three-way adjusting piece is used for connecting the first pipeline, the second pipeline and the transition room. A third control component is formed on the first pipeline in the control room. A fourth control component is formed on the fourth pipeline in the high-altitude environment laboratory. A first differential pressure sensor is formed in the control room or the transition room. A second differential pressure sensor is formed in the transition room or the high-altitude environment laboratory. The first transition door and the second transition door are in a mutually exclusive relationship. The application can avoid the health risks of the operating personnel when entering and leaving the high-altitude environment laboratory, and ensure the health and safety of the operating personnel.

The utility model discloses an environmental test chamber separating device with temperature zoning, and belongs to the technical field of large-scale environmental test chambers. According to the environment test chamber separating device for temperature zoning, a test chamber comprises a first chamber body and a second chamber body, a separating wall is arranged between the first chamber body and the second chamber body, an underground space is arranged on the inner side of the first chamber body, a dynamometer is arranged on the underground space, a mounting base is arranged on the separating wall, and a temperature sensor is arranged on the mounting base. A first sliding door and a second sliding door are arranged on the inner side of the mounting seat; the first air bag strips are arranged on the sides, close to the partition wall, of the first sliding door and the second sliding door, inflation is conducted through the air pump in the underground space, the sealing performance of the partition device is effectively enhanced, the second air bag strip and the connecting piece are arranged at the end, close to the second sliding door, of the first sliding door, and it is further ensured that when the two doors are closed, the partition wall is closed. Due to the sealing effect between the two parts, heat exchange between different temperature areas is avoided, and the accuracy of an experimental result is improved.

An environmental test enclosure conditions the inlet air of a device under test (DUT) using a recirculating airflow loop that faces the DUT's intake side. Panels with insulating material form the loop, which includes an environment-conditioning device positioned upstream of the intake to add or remove heat and / or moisture. An ambient-air mixing aperture on the enclosure communicates the loop with room air to trim the inlet condition without dedicated chilling or additional heating. One or more sensors measure an inlet environmental parameter (e.g., temperature or relative humidity), and a controller maintains airflow toward the intake and coordinates the conditioning device output with the aperture setting. Exhaust air from the DUT is routed back toward the conditioning device to reuse waste heat, improving energy efficiency and test throughput.