15 results about "Ambient pressure" patented technology

A method and apparatus for performing post-exposure bake operations is described herein. After exposure of photoresist on a substrate, the substrate is heated during a baking process to facilitate protection of the resist. The baking process is performed in a vacuum environment at sub-atmospheric pressures. After baking at reduced pressure, the substrate is cooled. The cooling process is performed at sub-atmospheric pressures. Further development of the resist is performed at ambient pressures.

A safety negative pressure gas supply cylinder according to the present invention comprises a cylinder body, a pipeline structure, a first check valve, a second check valve, and an adsorbent. The cylinder body has an opening, and the space inside is used to store gas, and the gas forms a pressure lower than atmospheric pressure inside the cylinder body. The pipeline structure is disposed inside the cylinder body and communicates with the opening, and includes a first pipeline and a second pipeline. The first check valve is disposed in the first pipeline and has a first check valve opening pressure greater than atmospheric pressure. When the pressure of the external filling gas is greater than the opening pressure of the first check valve and the internal pressure, the external filling gas enters the cylinder body. The second check valve is disposed in the second pipeline and has a second check valve opening pressure. When the pressure of the gas inside the cylinder is greater than or equal to the opening pressure of the second check valve and the external ambient pressure, the stored gas flows out of the cylinder body. The adsorbent adsorbs and stores the gas.

This invention discloses a deep learning-based adaptive compensation method for temperature and pressure in an electrochemical oxygen sensor, relating to the field of oxygen content detection technology. The method includes the following steps: constructing a sealed test space and simultaneously conducting random oxygen content tests within the sealed test space, recording the oxygen content test data; analyzing the temperature offset relationship between the ambient temperature and the sensor temperature based on the oxygen content test data; analyzing the pressure offset relationship between the ambient pressure and the sensor temperature based on the oxygen content test data; analyzing the primary and secondary offset relationships based on the temperature and pressure offset relationships; and adaptively compensating the sensor temperature based on the primary and secondary offset relationships. This invention addresses the problem that existing oxygen content detection technologies using electrochemical oxygen sensors cannot eliminate reading deviations under different temperature and pressure environments, resulting in inaccurate oxygen content measurements.

An underwater LED light for use in high ambient pressure environments having a housing, a transparent pressure-bearing window, an MCPCB having one or more LEDS, and a multilayer stack of spacers for carrying loads applied to the window to the MCPCB and to the housing.

This invention discloses a variable multi-parameter chamber wire fire spread testing system. The system includes: a combustion chamber for providing a sealed testing space; an environmental parameter adjustment unit, including a temperature adjustment module, a pressure adjustment module, and an oxygen concentration adjustment module, for independently adjusting the ambient temperature, ambient pressure, and ambient oxygen concentration within the combustion chamber; an ignition unit, located within the combustion chamber, for igniting the wire under test; and a flow field velocity measurement unit for measuring the airflow velocity field and vortex structure during the wire fire spread process. This invention's variable multi-parameter chamber wire fire spread testing system can test the wire fire spread behavior under different environmental conditions such as temperature, pressure, and oxygen concentration, and record and analyze the wire characteristic parameters during the fire spread process under different environmental conditions to assess the fire hazard of wires under special environmental conditions.

A heat transfer system including an active component and a dissipation region is described. The active component is configured to undergo vibrational motion. The active component transfers fluid from a high pressure region to an ambient pressure region via an egress. The active component also induces a pulsating pressure in the fluid. The pulsating pressure is dissipated in the dissipation region such that turbulence is reduced where the fluid is introduced to the ambient pressure region.

Transfer unit configured to transfer products during inter-factory transport in a clean environment from a first cleanroom in a first factory to a second cleanroom in a second factory remote from the first factory, comprising: - a container having a plurality of panels that together enclose a compartment configured to receive the products; - a door opening in one of the side panels; - a passive pressure equalizer that is configured to equalize a pressure inside the compartment based on a pressure differential with an ambient pressure in an environment outside the container, comprising one or more than one equalization channel; and - an air conditioner that is in flow connection with at least one of the one or more than one equalization channel and configured to treat ambient air from the environment outside the container that enters to inside the compartment via the one or more than one equalization channel.

The invention relates to a sensor device (10) for detecting a physical variable (110) acting on the sensor device (10), in particular an ambient pressure acting on the sensor device (10), wherein the sensor device (10) has a sensor unit (11) which operates according to an optical measurement principle, and the sensor device (10) is designed to detect the physical variable (110) by means of the sensor unit (11) and to detect a movement of the sensor device (10), the movement being carried out in particular during the detection of the physical variable (110), and / or to at least partly compensate for an influence of the movement on the detection of the physical variable (110).

The invention relates to a sensor device (10) for detecting a physical quantity (110) acting on the sensor device (10), in particular an ambient pressure of the sensor device (10), wherein the sensor device (10) has a sensor unit (11) with an optical measuring principle, and wherein the sensor device (10) is configured to detect the physical quantity (110) by means of the sensor unit (11) and to detect a movement of the sensor device (10) that occurs, in particular during the detection of the physical quantity (110), and / or to at least partially compensate for an influence of the movement on the detection of the physical quantity (110).

It suppresses the decrease in output under low-pressure conditions. [Solution] The vehicle comprises an engine 10 having a main combustion chamber 1, a sub-chamber 11 adjacent to the main combustion chamber 1, a first ignition device 20 facing the sub-chamber 11, and a second ignition device 30 facing the main combustion chamber 1; an environmental information acquisition means 53 for acquiring ambient pressure information; and a control unit 51 for controlling ignition by the first ignition device 20 and the second ignition device 30. The control unit 51 can select first ignition control, which performs ignition by the first ignition device 20 and does not perform ignition by the second ignition device 30 when the load of the engine 10 is below a predetermined load threshold, and second ignition control, which performs ignition by the second ignition device 30 and does not perform ignition by the first ignition device 20 when the load of the engine 10 is above a predetermined load threshold. The control unit 51 can select first ignition control, which sets a predetermined load threshold to the first predetermined load in a standard pressure environment where the atmospheric pressure information is above a predetermined value, and sets a predetermined load threshold to the low load side in a low pressure environment where the atmospheric pressure information is below a predetermined value.

The invention provides the use of a clearing gas in the separation of a mixture comprising a light and a heavy component that are difficult to separate. The invention further concerns a process for such a separation, comprising (a) providing a product mixture containing at least a light component and a heavy component, wherein a binary system of the light component and the heavy component has a Henry's law constant of at least 0.001 mol m−3 Pa−1, and the boiling point of the light component is at least 30° C. higher than the boiling point of the heavy component, determined at ambient pressure; (b) subjecting the product mixture to a distillation step, wherein the product mixture is heated in a distillation column to a distillation temperature at a distillation pressure; (c) feeding a clearing gas at a location below the feed point of the product mixture; (d) collecting at the top of the distillation column a product gas containing the light component and the clearing gas; (e) collecting at the bottom of the distillation column a product liquid containing the heavy component.

This invention discloses a barometer error calibration method based on a pressure field, comprising the following steps: S1, performing drift suppression and cross-consistency calibration on the original height observation data of the tag barometer and anchor barometer to obtain the cross-calibration height of each anchor barometer; S2, constructing a time-varying pressure field model for each anchor barometer to solve for the pressure plane value at the horizontal position of the tag barometer, thereby obtaining the residual between the drift compensation height of the tag barometer and the pressure plane; S3, estimating and updating the height offset of the tag barometer online based on the time-varying pressure field model to obtain the tag barometer pressure height correction amount; S4, using the tag barometer pressure height correction amount to correct and update the drift-suppressed tag barometer pressure height, and outputting the elevation result. This method can effectively suppress errors caused by barometer drift and changes in ambient pressure, improve the stability and accuracy of elevation estimation, and has good robustness and adaptability.

A sealing element for a high-pressure connection, including a first portion and a second portion. The first portion is configured to dispose the sealing element in a clearance. A first side of the first portion is disposed so as to be substantially orthogonal to a second side of the second portion. The second portion has a third side, and the second portion is configured to press the third side onto a gap to be sealed when an increased ambient pressure acts on the second side.

This invention discloses a method, system, equipment, and medium for testing the airtightness of a stratospheric airship capsule. The system includes a capsule inflation device, a capsule volume measurement device, an environmental parameter measurement subsystem, a capsule parameter measurement subsystem, and a data transmission and storage subsystem. The method establishes the relationship between the volume of the capsule under test and the internal and external pressure difference. It measures the internal temperature of the capsule, the internal and external pressure difference, the ambient temperature, and the ambient pressure under different initial pressure difference conditions to obtain the equivalent pore size value for gas leakage under different pressure differences. Based on the flight test design conditions of the stratospheric airship, the gas leakage amount is calculated daily for each day and night during the stationary phase, and the capsule volume, capsule pressure difference, and equivalent pore size value are updated for each day and night until the capsule pressure difference is less than a preset minimum pressure difference value, thus reaching the theoretical stationary time, thereby obtaining the airtightness test results of the stratospheric airship capsule. This invention can improve the accuracy of evaluating the airtightness performance of stratospheric airship capsules.