632 results about "Environmental tests" patented technology

One aspect of the present invention is a system of fabricating a barrier wall between the testing and tester volumes of an environmental test chamber. This aspect may use a plurality of pallets adapted to receive a device under test and a testing apparatus, a framework adapted to receive a plurality of pallets, and a plurality of insulation bricks associated with the plurality of pallets. The insulation bricks may be adapted such that they can cooperate to form an insulating barrier between the device under test and the testing apparatus.

An environmental test chamber provides a fast cool down to a temperature of about -125° F. and a fast heat up of an element under test.

A method for testing integrated circuit devices and loading such devices into a test board for further testing and an apparatus therefor is disclosed. The method allows for selection between two modes of operation. In a first mode, the integrated circuit devices are subjected to an electrical test before being placed into the test board for further testing. In a second mode, the integrated circuit devices are tested after being placed in the test board. The apparatus allows for the selection between the first mode and the second mode. In either mode, information about the tested devices and the sockets in the test board is used to load the test boards intelligently. Intelligent loading means that devices under test (DUTs) are not placed in bad sockets and devices that do test bad are removed from the test board, with an option of replacing the failed DUT with another DUT before subsequent environmental testing of the DUTs in the test board is carried out.

The invention discloses an automatic driving test method and system based on mixed reality. The method comprises the following steps: a virtual test vehicle transmits test data in a virtual environment to a vehicle terminal of a real test vehicle through a cloud server, so that the real test vehicle merges the virtual environment test data with the real environment data, and selects a driving planaccording to the merged data; the real test vehicle synchronously uploads the real-time data of a vehicle sensor to the cloud server of a control center, a road surface sensor of a test field synchronously uploads the real-time data of a road surface to the cloud server of the control center, the cloud server sends the received data to a control center calculation platform, and the control centercalculation platform updates the virtual environment according to the data provided by the cloud server and adjusts the driving speed and the driving route of the virtual test vehicle; and the control center calculation platform saves the driving parameters of the real test vehicle under the influence of the virtual test environment.

A method for testing integrated circuit devices and loading such devices into a test board for further testing and an apparatus therefor is disclosed. The method allows for selection between two modes of operation. In a first mode, the integrated circuit devices are subjected to an electrical test before being placed into the test board for further testing. In a second mode, the integrated circuit devices are tested after being placed in the test board. The apparatus allows for the selection between the first mode and the second mode. In either mode, information about the tested devices and the sockets in the test board is used to load the test boards intelligently. Intelligent loading means that devices under test (DUTs) are not placed in bad sockets and devices that do test bad are removed from the test board, with an option of replacing the failed DUT with another DUT before subsequent environmental testing of the DUTs in the test board is carried out.

A testing method for thermal resistance of heat conducting material is disclosed. The testing jig which consist of heating unit and dissipating heat unit is set, the heat conducting material is clipped between the heating unit and dissipating heat unit; the testing jig clipping the heat conducting material is located in the environmental test box, and the parameters of the environmental test box is set to do environmental test; the testing jig tested by the environmental test is heated by the heating unit, the heat is transferred to the dissipating heat unit through the heat conducting material, the temperature of the heating unit and dissipating heat unit is measured; when the temperature is stable, the thermal resistance is calculated by calculating the power consumption of the heating unit and the temperature difference of the heating unit and dissipating heat unit. In the invention the testing jig which consists of the heating unit and dissipating heat unit is provided. The invention can test the reliability of the thermal resistance in different condition and improve the measuring accuracy.

A humidity control apparatus and methods for use with, e.g., an environmental test chamber. In one embodiment, the apparatus comprises a system having a test chamber, a water tank, motive source for a gaseous humidity carrier, and temperature controllers for the tank and chamber. The carrier gas (e.g., air) is diffused through the water tank, thereby saturating the gas to a prescribed humidity level. This saturated gas is then passed into the chamber, and the environment within the chamber (i.e., humidity and temperature) controlled by the controller(s) so as to maintain the desired humidity level. The apparatus disclosed has the primary advantage of reducing or even substantially eliminating condensation within the test chamber when humidity levels are increased.

Disclosed is a computing method of storage dynamic reliability for an aviation drive circuit module. The computing method includes steps of selecting, classifying and statistically analyzing main storage environmental stress; determining storage failure modes and failure mechanisms of the aviation drive circuit module; statistically analyzing storage environmental stress magnitudes; obtaining environmental test data of a component or a part on the premise that the failure mechanisms remain unchanged while the test environmental stress changes; computing life distribution characteristic parameters of various failure mechanisms in the module storage process; computing the life distributions of various failure mechanisms in the whole storage period; and obtaining an expression of the life distributions due to the life distribution characteristic parameters are known, integrating life distribution functions of various failure mechanisms in the storage period to obtain a failure probability F p (t) and a R p(t) reliability of various failure mechanisms at various times. According to the computing method of the storage dynamic reliability for the aviation drive circuit module, a more precise assessment result can be obtained on the premise of saving of test costs, and evidence can be provided for the reliability design of the aviation drive circuit module.

An environmental test chamber fast cool down and heat up system. The environmental test chamber fast cool down and heat up system comprises: an environmental test chamber having a fast cool down evaporator and fast heat up condenser coil, wherein the coil is selectively coupled either to receive a hot refrigerant gas flow or to receive a sub-cooled refrigerant flow; a cascade condenser coupled to the environmental test chamber; a primary stage sub-system coupled to the cascade condenser; a secondary stage sub-system coupled to the cascade condenser; and a thermal storage unit coupled to the primary stage sub-system and to the secondary stage sub-system. Wherein the environmental test chamber has an operational temperature down to about -125° F.

The invention provides an environmental test chamber and a method for obtaining testing environment by using same. The environmental test chamber comprises an inner chamber, an outer chamber and an air treatment system; the inner chamber is nested inside the outer chamber; the air treatment system is selectively connected with one of the inner chamber and the outer chamber; when the air treatment system is selected to be connected with the inner chamber, an air inlet of the air treatment system is connected with an air outlet of the inner chamber, and an air outlet of the air treatment system is connected with an air inlet of the inner chamber; when the air treatment system is selected to be connected with the outer chamber, the air inlet of the air treatment system is connected with the air outlet of the outer chamber, and the air outlet of the air treatment system is connected with the air inlet of the outer chamber; and the inner chamber comprises a pollution source generating device and a sampling port. The environmental test chamber can well imitate polluted indoor environment and can conduct purification property test on air purifying equipment under uniform test conditions, thus providing conditions for effectively evaluating the purification effects of the air purifying products on pollutants.

An environmental test chamber fast cool down system. The environmental test chamber fast cool down system, comprises: an environmental test chamber evaporator, a cascade condenser coupled to the environmental test chamber evaporator, a sub-cooled primary stage loop coupled to the cascade condenser, a sub-cooled secondary stage loop coupled to the cascade condenser, and a thermal storage unit coupled to the sub-cooled primary stage loop and to the sub-cooled secondary stage loop.

The invention relates to a method and device for quickly measuring a building material emission key parameter, belonging to the field of indoor environmental tests. The method comprises the following steps: building an effect model for concentration in the measuring device in the building material VOC (volatile organic compounds) emission process; controlling the temperature of the measuring device to be always kept at a set value by a temperature controlling device (such as a constant-temperature water bath); putting a building material to be measured into the measuring device, and sealing the measuring device; in the building material emission process, measuring the concentration of target VOC in the measuring device for several times; finally, taking the average value of the concentration results of the last 2-3 times as a balanced concentration, and taking other concentration results as a hourly concentration; tidying into the mode of logarithm; and then, carrying out linear fit for emission time to obtain a slope and an intercept so as to obtain three key parameters, i.e. initial concentration, diffusion coefficient and distribution coefficient in the building material emission process. The environmental chamber system and the measuring method are simple, have the advantages of short test time and higher precision and are convenient for engineering application.

The invention discloses a high-temperature variability temperature and humidity environmental test control method and a device. In the method, a high-power electric heating group is utilized in a test box to realize the process of temperature rise, liquid nitrogen is infused by a liquid nitrogen device to realize the process of temperature reduction, a steam generating device is used for realizing the process of wetting, and the liquid nitrogen device is used for infusing the liquid nitrogen to realize the process of dehumidification. The device comprises the test box, and a temperature and humidity control system, wherein the temperature and humidity control system consists of a programmable logic controller (PLC), a temperature sensor, a humidity sensor, the high-power electric heating group, the liquid nitrogen device, the steam generating device and a fan. The method and the device can well realize decoupling control between the temperature and the humidity in the test environment under a large temperature variability condition, and can meet the requirements of the temperature and humidity control system of a reliability enhancing test device.

The present invention relates to a cyanide detection method using fluorescence and cyanide sensitive boronic acid containing fluorophores, wherein a change in a measured fluorescent property correlates to the concentration of the cyanide compound in a biological or environmental test sample.

The invention relates to a nano gold biological composite probe, a detection method and application thereof. The detection method is characterized in that: the method comprises the following steps: firstly marking a bead through a monoclonal antibody of a protein to be tested; marking the polyclonal antibody of the protein to be tested on nano gold while and simultaneously marking a DNA probe with a biotin label; carrying out a biotin-streptavidin reaction on the DNA probe on the nano gold to make a lanthanide bonded with colloidal gold to construct the nano gold biological composite probe; mixing the bead of marked monoclonal antibody of the protein to be tested, the nano gold biological composite probe and a protein sample to be tested, carrying out the incubation on the mixture for a certain time at 37 DEG C; cleaning away the nano gold probe which does not react; adding a reinforcing liquid; and determining the fluorescence intensity so as to realize the aim of carrying out the quantitative determination on the protein to be tested. The method obviously improves the detection sensitivity of biomolecules, and is used for detecting a plurality of kinds of biomolecules synchronously. The method is widely applied in the fields of clinical diagnosis, antigen, antibody and nucleic acid detection, health quarantine, environmental tests, and the like.

The invention discloses an environmental test chamber for monitoring purification effect of air purifying products, which comprises a sealed box body, a sample introducing / sampling system, a temperature / humidity control system, a light source control system, an air channel internal circulation and air flow rate control system, an air exchange system and a control panel; in the environmental test chamber of the invention. an environment compounding cavity, independent of the external environment, is formed by the sealed box body, and environmental parameters in the environmental test chamber can be regulated and controlled by the sample introducing / sampling system, the temperature / humidity control system, the light source control system, the air channel internal circulation and air flow rate control system and the air exchange system so as to simulate different environmental conditions. The environmental test chamber of the invention has the advantages of providing a test environment with good stability and uniformity and comprehensively simulating the actual working environment of air purification, so that the environmental test chamber can be used for monitoring the purification effect of air purifying products and is also applicable for monitoring the purification effect of nanometer purifying products based on photocatalysis.

The invention discloses a trace corrosive gas environmental test box and belongs to the technical field of environment friendliness and material corrosion research. The trace corrosive gas environmental test box comprises a clean air supply module, a trace corrosive gas generation module, a sample corrosion test reaction module, an air recovery module and an in-situ image acquisition system. A multi-gas-path trace corrosive gas environmental test box which can perform in-situ observation on the surface state of a sample and control temperature to be 25 to 80 DEG C, humidity to be 40 to 97 percent and the concentration of the trace corrosive gas to be 10 to 10,000ppb is implemented. The trace corrosive gas environmental test box has the advantages of occupying small floor, along with simple structure, convenience in operation, light pollution, high accuracy, capacity of controlling temperature, humidity and the concentration of polluted air simultaneously and acquiring images of a sample state in real time, and can be applied to scientific research and engineering experimental research.

The present invention relates to a cyanide detection method using fluorescence and cyanide sensitive boronic acid containing fluorophores, wherein a change in a measured fluorescent property correlates to the concentration of the cyanide compound in a biological or environmental test sample.

The invention discloses an integrated convergence media cloud production and release system and method. The system comprises a Docker engine which is used for establishing a Docker mirror image and a Docker container and pushing the Docker mirror image and the Docker container to an environment test sub-system; the environment test sub-system which is used for testing the established Docker mirror image and Docker container and pushing the Docker mirror image and the Docker container to a cloud platform deployment sub-system after a test is successful; the cloud platform deployment sub-system which is used for deploying the Docker mirror image pushed by the environment test sub-system on a cloud server; a cloud collection sub-system which is used for obtaining network data; a cloud storage sub-system which is used for storing the data obtained by the cloud collection sub-system and providing a uniform access interface; a cloud analysis sub-system which is used for processing the data in the cloud storage sub-system; and a cloud release sub-system which is used for releasing the data processed by the cloud analysis sub-system. According to the system and the method, the development, test, deployment, production and release processes are integrated, the load of the convergence media production and release system is balanced, the resource deployment cost is reduced, and the high-efficiency production of a cloud platform is realized.

The invention relates to a small-sized environmental test chamber for pollutant release researches, which comprises a chamber body, an air generation system, a temperature-humidity control system, a sampling system and an air purifying device. By utilizing the small-sized environmental test chamber for simulating to approach real space, the temperature, the humidity and the air interchange ratio inside the chamber body can be controlled according to experimental conditions with low cost and simple operation. Meanwhile, the chamber body is provided with the purifying device, which can purify air samples at an air inlet and an air outlet so as to improve experimental conditions, be beneficial to acquiring real and reliable test data and avoid polluting indoor air.

In a single-use handheld diagnostic test device and an associated system and method, a biological and / or environmental test sample is received and reacted with reagents. The test device tests a single sample and includes a sensor to detect test data. The test device mates with, and transmits the test data to, an electronic device. A processor of the electronic device applies algorithms to the test data to generate highly sensitive and accurate quantitative test results. A presentation element of the electronic device presents the test results to a user. The test device is adapted for disposal, or for sterilization and re-use, after the electronic device receives the test data. The electronic device may be, for example, a mobile communications device, a personal digital assistant, a laptop computer, a navigation device, a digital audio player, a camera, or a gaming device.

The invention relates to a device for detecting residual stress close to surfaces of metal materials. The device stimulates a critical-refraction longitudinal wave and calculates a stress value according to an acoustic elasticity theory. According to the invention, by reducing contact area between a wedge and a part to be measured, the affect of plate surface distortion to a measurement result can be effectively eliminated; the affect caused by temperature difference can be eliminated by temperature compensation; and therefore, the system is adaptable to tests in more terrible field environments. The system is higher in integration degree, small and exquisite in appearance and convenient to carry.

The invention discloses a method for testing potential safety risks of antiskid braking control boxes by the aid of quick temperature variation. The method includes determining high-temperature numerical values of an antiskid braking control box in quick temperature variation tests; determining low-temperature numerical values of the antiskid braking control box in the quick temperature variation tests; determining a quick temperature variation rate; determining working currents applied to the antiskid braking control box in test procedures and determining temperature holding durations of the antiskid braking control box under high-temperature and low-temperature conditions; establishing a quick temperature variation test profile according to a determined high temperature of a test chamber, a determined low temperature of the test chamber and a determined temperature variation rate of the test chamber; performing five cycle quick temperature variation tests according to the established test profile; comprehensively applying an antiskid braking working current to truly stimulate potential failure risks of the antiskid braking control box. The method has the advantages that the comprehensive environmental test chamber is utilized, the temperatures are accessorily controlled via liquid nitrogen, the potential failure risks of the antiskid braking control box during temperature variation can be stimulated within two days, and accordingly purposes of improving the development efficiency, saving energy and reducing consumption are achieved.

A system using image processing technique to test the optical environment of building features that all the optical information in the environment is taken by camera and then input to cmputer, where each pixel on computer image is used as a test point to find the relation between its gray level and RGB value and the brightness and colourity of object point. The analyzed result is stored. Its test software is also disclosed.

The invention belongs to the technical field of mechanical environmental test, particularly relates to a triaxial mechanical decoupling device and a vibration testing system, and provides a device for connecting a triaxial simultaneous excitation work bench and a testing system. The triaxial mechanical decoupling device is characterized by comprising a work bench (1) and spherical hydrostatic bearings (4), the work bench (1) is in the shape of a metal plate, two mutually perpendicular mounting faces which are perpendicular to the upper end face and the lower end face of the work bench are arranged on the lateral side of the work bench (1), the spherical hydrostatic bearings (4) are respectively mounted on the lower end face (3) of the work bench, an X-directional side (7) of the work bench and a Y-directional side (2) of the work bench, and the other side of each spherical hydrostatic bearing (4) is connected with a vibration generator. Triaxial composite vibration testing of a workpiece can be achieved by using the corresponding triaxial work bench and the spherical hydrostatic bearings. By means of the triaxial mechanical decoupling device, the workbench can move only in the Z-direction, the X-direction or the Y-direction, so that triaxial translation of the work bench is realized.

An environmental testing system for environmental testing with particulate matter, such as sand and dust, is disclosed. The testing system uses a feeder to feed precise amounts of particulate matter into an injector, which injects the particulate matter into the airflow leading to a test chamber with approximately the same velocity as the surrounding airflow. The feeder may be a loss-in-weight gravimetric feeder, and the injector may be a Venturi valve actuated by compressed air. The system also includes operator protection features, such as an exhaust fan that creates negative pressure when the door to the test chamber is opened, and when particulate matter is dumped into the system. A temperature control system heats and cools the airflow during tests, a pneumatic conveying system moves fluidized particulate matter into and out of the system, and a controller provides automatic control over the system.

The invention discloses a method for measuring volatile substance release in an interior wall coating, which comprises the following steps of: brushing the coating on two surfaces of a smooth inert substrate material twice according to the explanation of the using amount of the interior wall coating, immediately placing the material in an environmental test chamber with adjustable temperature, humidity and ventilation frequency, periodically extracting an air sample in the environmental test chamber according to the release rule of a volatile harmful substance, tracing and monitoring the release concentration of the volatile harmful substance in the sample, and making a release concentration-time curve to determine the release peak concentration and release steady-state concentration of the volatile harmful substance in the sample. The release concentration of a volatile organic compound (VOC) is detected by using gas chromatography, and the release concentration of formaldehyde is detected according to a phenol reagent method.

The invention provides a dust atmosphere testing device for an automobile brake interval automatic adjusting arm test bench, and belongs to the technical field of machinery. The invention solves the problems of poor detection precision, triviality and poor versatility and the like during a detection test by the existing brake interval automatic adjusting arm. The dust atmosphere testing device for the automobile brake interval automatic adjusting arm test bench comprises a box body and a fixing seat which is arranged in the box and used for fixing the adjusting arm, a dust generating mechanism is arranged in the box body, and the dust can be poured into the circumference of the adjusting arm when the dust generating mechanism is working. The device has the advantages of automatically simulating durability tests of the brake interval automatic adjusting arm under the dust atmosphere and the normal conditions, really simulating the practical working condition of the brake interval automatic adjusting arm, and precisely determining various performance indexes in real time. The device has good versatility, reliable and precise detection, high intellectualization level, and meets new requirements for operation automation and the like.

The invention relates to an environment testing device. The environment testing device comprises an environment testing system, a constant-temperature constant-humidity air treatment system, an air purifying system, a signal processing system and a display device, wherein the environment testing system is used for testing a harmful substance; the constant-temperature constant-humidity air treatment system is used for controlling the internal temperature and humidity of the environment testing system; the air purifying system is used for conveying clean air to the environment testing system; the signal processing system is used for processing temperature and humidity signals which are detected by the constant-temperature constant-humidity air treatment system; the display device is used for displaying signals which are transmitted by the signal processing system; the air purifying system is connected with the environment testing system through an air inlet of a testing outer chamber; the constant-temperature constant-humidity air treatment system transmits a detected analog data signal in the environment testing system to the signal processing system; the signal processing system converts the analog data signal into a digital signal; and the display device displays the digital signal. By adoption of the environment testing device, the temperature and humidity of the testing outer chamber and a testing inner chamber in the environment testing system can be accurately controlled, a real indoor environment is effectively simulated, the release rate and release characteristic of a pollutant are tested, test data are obtained, and a test model is established.

The invention relates to a method of detecting memory ability of a memory; the memory comprises a read-only region; the method comprises the following steps of: calculating read-only data needing to be written into the read-only region by using a checking algorithm, and obtaining a first checking value; writing the read-only data into the read-only region; placing the memory in a simulation environment where data easily loses; reading out the read-only data stored in the read-only region; and calculating the readout read-only data by using the checking algorithm, obtaining a second checking value and judging the memory ability of the memory to be qualified when the first checking value and the second checking value are equal. The technical scheme of the method can be used for judging whether the data memory ability of the read-only region of the memory can undergo environmental test.