43 results about "Simulated altitude" patented technology

The invention discloses a high-altitude and low-pressure characteristic simulation test station of an air compressor in an internal-combustion engine, relating to a characteristic simulation test station of an air compressor in an internal-combustion engine, and comprising an air pipeline system and a lubricating system, wherein the air pipeline system comprises a vacuum pump, a pressure stabilizing box, and an air filter, a flow testing section, an air inlet parameter testing section, a flow stabilizing section and an air compressor sequentially connected with an outlet of the pressure stabilizing box, and an air exhaust parameter testing section, a back pressure regulating valve, a stopping valve and an air exhaust intercooler sequentially connected with an outlet of the air compressor;the lubricating system comprises an oil tank, an oil supplying system and a lubricant intercooler; an outlet of the air exhaust intercooler is connected with the pressure stabilizing box so that an air pipeline of the test station forms a sealed air circulation system; and the oil tank is arranged inside the pressure stabilizing box so as to improve the sealing property of the test station. The test station can simulate the environmental pressure at the altitude of 0-30,000 meters and performs the high-altitude simulation characteristic test of the air compressor in the turbo-charged internal-combustion engine, therefore, the sealing property and simulated altitude of the test station are higher than those of the existing simulation test station of the same type.

A method and apparatus for cyclic variations in altitude condition that allows a user to rest in a pressure vessel while undergoing rapid variations or transitions between simulated altitudes. The pressure vessel comprises a blower to generate negative pressure, and a proportional valve to allow air back into the pressure vessel in order to relieve the negative pressure. An on-board interface, kiosk controller and master controller are all in electrical communication with each other in order to enable a user to implement a program of cyclic variations in altitude conditioning that is suitable to the specific user, and enables an operator to bill the user for such services, as well as to allow the user to use a different pressure vessel without re-entering data, so long as such data was originally entered and stored, and the different pressure vessel is in electrical communication with the master controller. A user sensor monitors the user during a session, such that the program may be modified or replaced with another program in real time, according to the user's needs.

A method and a system for providing a hypoxic environment inside an enclosed compartment with simultaneous removal of carbon dioxide and moisture produced by occupants; said method and system designed for fire prevention and for simulated altitude training, wellness and hypoxic therapy, including equine and other animal applications.

The invention discloses a realization method of a missile radio altimeter height signal simulator based on DRFM (Digital Radio Frequency Memory) technology. The method applies the DRFM technology to the radio altimeter signal simulating since the DRFM technology can retain the subtle features of the radio frequency signal. According to the method provided by the invention, continuous sampling cycle storage technology, address register cycle reset and pulse delay precision control technology are adopted, and as the method is based on DRFM system digital noise modulation technology and digital convolution filter technology, a series of technical problems of applying the DRFM technology to the altimeter signal environment are solved, highly numerical simulation precision control and continuous adjustable are realized and a plurality of interference signals of the radio altimeter can be simulated. And as the method is under use in a certain testing system developed in our institution, the effectiveness and the validity of the method is tested and verified.

The invention discloses a three-dimensional similar simulation experimental method for groundwater pollution treatment and repair, which comprises the following steps of: (1) determining positions and sizes of a pollution area, a purification area and a permeable reactive area by moving the positions of left and right permeable wallboards; (2) adjusting a bottom sliding grid plate and a lateral sliding grid plate, and determining the position height and the volume size of a pollution source control box; (3) sequentially mounting tempered glass panels on the front and rear sides of a main frame device from bottom to top, sealing, fastening, and filling geological similar bodies and permeable reactive similar materials once in the pollution area, the purification area and the permeable reactive area until the simulation altitude is met when every group of tempered glass panels is mounted; (4) filling pollution source similar bodies and connecting external water injection hoses, and realizing flow characteristic simulation in the pollution area, the purification area and the permeable reactive area; (5) observing and recording various indexes of the pollution area and the purification area according to the time similarity requirements. The method is reasonable in filling and simple and convenient in operation, and the representation of the groundwater pollution treatment and repair process is guaranteed.

A radio-frequency transparent window having internal conduits for the passage of cooling fluid is configured for simulating a highly uniform thermal environment for testing a device intended for use in space. The device to be tested is placed within a chamber in which a vacuum condition is maintained by a radio-frequency transparent pressure window under a pressure seal. Within the chamber, the thermal window is positioned adjacent, but not in contact with, the pressure window. A radio frequency signal is capable of passing directly through both the thermal window and the pressure window to permit communication with the device being tested within the housing. The thermal window is not in contact with the device so there in no conduction of heat from the device. Radiant heat transfer may occur from the device to the thermal window.

The invention discloses a testing device of a contiguous-wave radio altimeter. The testing device is characterized in that a simulated altitude is set through upper computer software, a measuring result is displayed through the upper computer software, a delay echo signal consistent with a signal transmitted by the contiguous-wave radio altimeter in waveform feature is reproduced by the coordinated work of a medium-frequency testing echo module and a radio frequency module, an altitude detecting device is used for detect measuring precision, and the testing device is simple and practicable, high in flexibility, comprehensive in detecting effect, and the like; a tester only needs to set the parameters of an upper computer according to needs and correctly connect the altimeter, the testing device and a PC, the testing device can automatically complete a testing task, the testing device is simple to operate and convenient to use, only several simple steps need to be performed, operation complexity and workload of staff are lowered to the maximum extent, and work efficiency is increased.

The present invention generally relates to simulating a lithographic process, and more particularly to methods for smart selection and smart weighting when selecting parameters and / or kernels used in aerial image computation. According to one aspect, advantages in simulation throughput and / or accuracy can be achieved by selecting TCC kernels more intelligently, allowing highly accurate aerial images to be simulated using a relatively fewer number of TCC kernels than in the state of the art. In other words, the present invention allows for aerial images to be simulated with the same or better accuracy using much less simulation throughput than required in the prior art, all else being equal.

The invention provides a testing device for an aircraft fuel system in a simulated high altitude environment, comprising a low temperature gas supply system, a vacuum pumping system and a fuel system, wherein the low temperature gas supply system is used for creating a low temperature environment of the simulated high altitude; the vacuum pumping system is used for pumping air out of a pressure-proof fuel tank to create a low pressure environment of the simulated high altitude; the fuel system comprises the pressure-proof fuel tank, a fuel pump and an engine which are sequentially arranged; the low temperature gas supply system realizes the purpose of cooling fuel in the pressure-proof fuel tank through a plate type heat exchanger; and the vacuum pumping system is connected with the pressure-proof fuel tank. Accordingly, the invention also provides a testing method for the aircraft fuel system in the simulated altitude environment. Therefore, by adjusting the working pressure and temperature of the fuel system, the low temperature and low pressure environment of the high altitude is simulated, and working parameters of the fuel system are recorded, thereby analyzing and testing the fuel system.

A system and method for passive hypoxic training provides a person with a low oxygen (hypoxic) environment. Oxygen sensors automatically monitor and control oxygen levels to maintain the altitude desired. CO2 levels are monitored and CO2 is eliminated so that the air a person breathes is substantially clean and fresh. Exposure to a high altitude environment produces physiological changes in a person's body, which becomes more efficient at absorbing and transporting oxygen. Using the present method and system, athletes obtain the benefits of sleeping at a simulated altitude in the user's own home for six to twelve hours, rather than traditional altitude therapies in which athletes spend two to three weeks at high altitude before an athletic competition to obtain similar benefits. This system allows for “live high train low” altitude training that has been shown in controlled studies to provide superior benefits to “live high train high” training.

The invention relates to a method for correcting a corona discharge voltage of alternating-current line hardware. The method comprises the following steps that (1) a characteristic curve of the relation between the corona discharge voltage of the alternating-current line hardware and simulated altitudes is determined; (2) altitude correction factors Ka under the different simulated altitudes are determined; (3) the simulated corona discharge voltage UH(i) of the alternating-current line hardware under the simulated altitudes and a flat area discharge voltage Uo(i) are associated through the altitude correction factors Ka, a mathematical model is built, and the values, meeting Uo(i)=KaUH(i), of the altitude correction factors Ka are found out; (4) the altitude correction factors Ka are set to be equal to f(alpha, beta, ...zeta); (5) the values of alpha, beta, ...zeta are determined; (6) the corona discharge voltage of the alternating-current line hardware of different structural types is corrected under the altitudes. According to the method, the line hardware size and design basis meeting the actual running requirement can be provided, meanwhile, basic data and reference are provided for the optimization and improvement work of the alternating-current line hardware, the method is small in correction deviation to the actual testing result, and the correction result meets the electrical test requirement of the alternating-current line hardware.

The invention relates to a zero sequence current difference polarity comparison based power distribution network fault line selection method, which belongs to the technical field of electric power system fault line selection. According to the parameters for the operation of a power distribution network, a simulation model is set up. By setting different lines to have grounding faults with the phases respectively in the simulation model, power line work frequency zero-sequence current signals are generated among the simulated lines. The zero-sequence current within 10ms is selected after the faults occur. Then, the zero-sequence current differential function is defined and calculated; after that, the differential function is used to construct fault discriminators; based on the fault discriminators, the polarity of the zero sequence current of each line is compared. When the value of the fault discriminator of a certain line is equal to the maximum value of all the line fault discriminators, the line is determined as a faulty line. When the value of the fault discriminator of the certain line is not equal to the maximum value of all the line fault discriminators, the line is determined as a non-faulty line.

The invention relates to a simulated battery comprising a voltage generating unit for establishing electrical connection with an external power supply, generating a battery voltage and outputting thevoltage, a temperature detecting unit for sensing temperature information of an electrical device and outputting the information, and a battery information generating unit for generating a battery parameter and outputting the parameter. According to the invention, the battery function is simulated by using the circuit and no polymer battery material is used, so that the battery cost is lowered; problems of potential safety hazards of bump and explosion occurrence and an environment problem in traditional battery application are solved; and the accumulative testing costs of frequent replacementof the traditional mobile phone battery are lowered.

There is provided a biomimetic robot modelling the highly directional lizard ear. Since the directionality is very robust, the neural processing is very simple. This mobile sound localizing robot can therefore easily be miniaturized. The invention is based on a simple electric circuit emulating the lizard ear acoustics with sound input from two small microphones. The circuit generates a robust directionality around 2-4 kHz. The output of the circuit is fed to a model nervous system. The nervous system model is bilateral and contains a set of band-pass filters followed by simulated EI-neurons that compare inputs from the two ears. This model is implemented in software on a digital signal processor and controls the left and right-steering motors of the robot. Additionally, the nervous system model contains a neural network that can self-adapt so as to auto-calibrate the device.

The present invention discloses a fully-automatic lung type oxygen regulator test system. The system comprises a data processing and control system, a simulated lung system, a simulated altitude system provided with a vacuum chamber, a simulated mask which is mounted in the vacuum chamber and is connected with the simulated lung system, an oxygen regulator which is installed in the vacuum chamber and is connected with the simulated mask, an oxygen source which is connected with the oxygen regulator and a data acquisition system; the oxygen source sequentially passes through the oxygen regulator and the simulated mask so as to supply oxygen to the simulated lung system; the data processing and control system is connected with the simulated lung system, the oxygen source and the vacuum chamber; and the data acquisition system collects data from the simulated lung system, the oxygen source and the vacuum chamber and transmits the collected data to the data processing and control system. With the fully-automatic lung type oxygen regulator test system of the invention, the oxygen supply regulator can be tested fully automatically with high efficiency, test operation being simple; a test environment provided by the system is closer to the real working environment of a product, so that test data are more reasonable.

The invention relates to a road data processing method and device, a computer readable storage medium and computer equipment, and the method comprises the steps: obtaining plane road data, and determining the coordinates of intersection points between different roads according to the plane road data; acquiring road level data, and determining level information of different roads on the intersection point coordinates according to the road level data; generating a simulation height corresponding to each road on the intersection point coordinate according to the hierarchical information; according to the simulation height of each road on the intersection point coordinate, fitting the simulation height of each road on other coordinate points to obtain the simulation height of each road on other coordinate points; and rendering each road in the electronic map according to the plane road data and the simulation height of each road on each coordinate point containing the intersection point coordinates. According to the scheme provided by the invention, the production cost of data surveying and mapping can be greatly reduced, and a refined 3D electronic map is generated subsequently in a large-scale quantification manner.

Provided is equipment for detecting the braking performance of an additional brake. The problems that in the prior art, testing is troublesome, the workload is large, precision is low, and the simulation height is limited are solved. The equipment comprises a traction machine, a main drive, an energy conversion device and a detecting control loop. The equipment is technically characterized in that the energy conversion device is composed of a transmission energy storage wheel, a small transmission chain wheel and an angular velocity sensor; a large driving chain wheel and at least one large transmission chain wheel are assembled on a main transmission shaft of the main drive; and the main drive drives a transmission shaft of a transmission to rotate at a high speed, the rotating speed of the energy storage wheel achieves constant-speed running, rotating energy of an equivalent actual load provided by the energy conversion device is transferred to the main drive, and the additional brake is started to lock a friction disk for friction consumption till the main drive stops rotating. The equipment is reasonable in structural design and easy to operate, simulation of load energy during in-plant testing is equivalent to actual working conditions, and secondary debugging is not needed during field tests, so that the workload is reduced, and work efficiency and testing accuracy are improved.

The invention relates to a system and method for generating a radio analog altitude using synchronous signal excitation. The system comprises a radio altimeter, an attenuator, an analog signal generator, and a second-line detector, wherein a signal transmitting interface of the radio altimeter returns to a receiving interface of the radio altimeter after being connected to the attenuator, a synchronous signal transmitting interface of the radio altimeter is connected to the analog signal generator, and the analog signal generator is connected to the second-line detector after converting the synchronous signal into a video pulse signal. The analog signal generator is used to process the synchronizing signal, output a video signal of analog height, and transmit the signal to the second-linedetector, which can be continuously adjusted in the height range of 0-8000 m. The system and method for generating a radio analog altitude using synchronous signal excitation save the cost of test equipment, can realize the continuously adjustable test with high variation, and improve the work efficiency.

There is provided a method and apparatus for simulating a flight scenario during a live flight of an aircraft. The method comprises:(i) generating (60) images comprising scenes relevant to the simulated flight scenario at a simulated altitude;(ii) calculating, using live flight data received for the aircraft and with reference to a predetermined flight model (65), simulated flight data for the simulated flight scenario at the simulated altitude; and(iii) displaying, on a display system (35) of the aircraft, the calculated simulated flight data while controlling the display of said generated scene images to simulate movement of the aircraft through the displayed scene at a rate and in a direction corresponding to the displayed simulated flight data.The method and apparatus may optionally alter the response of the aircraft to control actions (70) by a pilot to simulate the response expected of the aircraft having the simulated flight characteristics.

The invention discloses a detection method of special transfer volume of acrylic acid in food packing materials. The method comprises the steps of sampling, pretreatment and detection of the special transfer volume of acrylic acid in pretreated target objects, Wherein the step of pretreatment comprises the processes of mixing a sample with simulated liquid which is preheated to the first specifiedtemperature to form mixed liquid, and sealing the mixed liquid; and allowing the sealed mixed liquid to stand for a specified time at the constant first specified temperature. The detection method ofthe special transfer volume of acrylic acid in the food packing materials has a low detection limit, can realize accurate detection and is simple in operation, and the used equipment is easy to obtain and low in cost and can be widely popularized.

The invention discloses a hydrogen fuel cell test environment pressure simulation method, which is used for simulating different altitude pressure (including but not limited to high altitude pressure) test environment pressure, and comprises the following steps: generating negative pressure through high-pressure fluid to form a negative pressure source; after stabilizing the pressure of the negative pressure source, hermetically connecting the negative pressure source with an exhaust port of the tested hydrogen fuel cell, and extracting hydrogen-containing air; and enabling the air subjected to pressure regulation and pressure stabilization to enter the tested hydrogen fuel cell from the air inlet, wherein the pressure of the gas inlet and the gas outlet of the hydrogen fuel cell is equal to the simulated altitude test environment pressure. The invention also discloses a hydrogen fuel cell test environment pressure simulation system. Hydrogen-containing air is sucked and discharged into the atmospheric environment through the negative pressure generated by the high-pressure fluid, the pressure of the hydrogen fuel cell testing environment can be accurately simulated in real time, and the safety of the simulation environment and the stability of the pressure of the testing environment can be ensured.

The invention discloses an altimeter simulator and a simulation method thereof. The simulator includes a pre-amplifier module, a post-amplifier module, a local oscillator module, a binary delay line switch matrix, a pre-mixer, a post-mixer, a link A first switch, a link A second switch, a link B first switch, and a link B second switch. The link A first switch and the link A second switch are connected to each other to form a first-stage highly simulated link A. The link B first switch and the link B second switch are connected to each other to form a second-stage highly simulated link B. Thealtimeter simulator and the simulation method thereof effectively reduce the simulation delay of ''absolute 0m'' of the altimeter simulator to reduce the simulation delay to 2.5 ns, thereby reducing actual simulation height corresponding to the ''absolute 0m'' to 0.375 m, effectively improves the height simulation precision of the altimeter simulator, makes the inspection of an altimeter more accurate and reasonable, and helps to improve the test accuracy of the altimeter.