416 results about "Pressure level" patented technology

An air mattress adjustment method includes adjusting the air mattress to a received user pressure setting, learning a level of pressure in the air mattress at a first plurality of times with respect to the user pressure setting, monitoring the level of pressure in the air mattress at a second plurality of times, determining that the pressure of the air mattress at one of the second plurality of times is out of range, and based on the determining, adjusting the pressure of the air mattress.Application. docx

A pressure-actuated switch having a pressure port, a diaphragm, a range spring, an actuator plate, a differential plate, and an electrical switch. A certain pressure level moves the diaphragm against the range spring at the pressure port and thus deflects the actuator plate. The actuator plate is coupled to the electrical switch via a snap spring, wherein the electrical switch can be switched on or off via the deflection of the actuator plate and the snap spring. The differential plate controlled by a differential spring is connected to the actuator plate and supports the actuator plate in a first portion of movement, wherein the differential plate is decoupled from the actuator plate in a second portion of movement of the actuator plate.

The invention discloses an auxiliary braking device for a vertical lifting type gate, and belongs to the technical field of vertical lifting type gates. The vertical lifting type gate is arranged in the gate groove in a lifting mode, and the auxiliary braking device comprises a hydraulic separating type crane, a hydraulic separating type crane and a hydraulic separating type crane, and the hydraulic separating type crane is configured to be capable of applying transverse pressure to the vertical lifting type gate so that the vertical lifting type gate can abut against and be fixed to the gate groove; the electric pump is connected to the liquid inlet of the hydraulic separation type crane and is configured to supply hydraulic fluid to the liquid inlet of the hydraulic separation type crane by hydraulic pressure; the regulating valve is arranged on a pipeline for connecting a liquid inlet of the hydraulic separating crane and an outlet of the electric pump; the auxiliary braking device is configured to adjust the pressure level of hydraulic fluid in the hydraulic separating type crane by adjusting the opening degree of the adjusting valve so as to adjust the transverse pressure.

The invention relates to an apparatus (100) for providing process air at at least two different pressure levels for an injection molding machine having an injection molding tool (10). The device (100) has two valves (Ia, IIa; ib, IIb), the first valve (Ia; ib) is connected, on the one hand, to a first pressure source (pI) at a first pressure level and, on the other hand, to an air duct (11a; 11b), which extends into the injection mould (10), and the second valve (IIa; iIb) is connected to a second pressure source (pII) at a second pressure level and to an exhaust line (12), wherein the first valve (Ia; ib) and a second valve (IIa; iIb) is designed and can be actuated in such a way that the air duct (11a; 11b) can withstand a first pressure or a second pressure. The invention further relates to an injection molding machine having such a device (100), to a method for demolding molded parts using such a device (100), and to the use of such a device (100).

Systems and methods of in situ pressure control at an anatomical environment during a procedure are disclosed. An exemplary irrigation and suction system comprises a user input configured to receive from a user a desired pressure to be applied to the anatomical environment, or a desired flow condition corresponding to the desired pressure. The system comprises a pressure sensor to sense a pressure at or near the anatomical environment, and a control module to adjust one or more of an irrigation flow rate or a suction flow rate of at least one working channel of a medical device to maintain the pressure of the anatomical environment at substantially a level of the desired pressure, or to maintain the desired flow condition in the working channel during the procedure.

This application provides a constant pressure water supply control method, system, and medium for a standardized secondary water supply pump station. The method includes: acquiring and processing multiple historical water supply data points within a preset time period, including water supply time data, corresponding pump water supply pressure data, and user node water supply pressure data, to obtain the water supply pressure level and corresponding water supply pressure and time; processing this data in conjunction with the user node water supply pressure to obtain the pipeline pressure loss value corresponding to the water supply pressure level; acquiring and processing real-time water supply time point data to obtain the water supply pressure level, corresponding water supply pressure, and pipeline pressure loss value, to obtain the real-time demand water supply pressure of the pump; then implementing water supply and acquiring and processing real-time water supply pressure data from user nodes to obtain a real-time water supply evaluation index; finally, performing threshold comparison and adjusting the water supply mode based on the comparison results; thereby achieving constant pressure water supply and precise control of the secondary water supply while reducing energy consumption.

The invention discloses a reinforcement learning reward function construction method and system based on multi-modal physiological signals. The method belongs to the technical field of automatic driving, artificial intelligence and man-machine interaction. The basic defect that balance cannot be obtained between a task target and the physiological comfort of a driver and passengers exists in the design of an existing reward function is overcome. The core technical idea is a two-stage decoupling architecture, wherein the first stage is an offline training stage, and the purpose of the first stage is to train a'physiological reward agent model '; and a second stage (reward generation and deployment stage): in this stage, the real-time dependence on all multi-modal physiological signals and acquisition equipment thereof is completely abandoned. The physiological reward agent model trained in the first stage is only used for conducting batch processing on any data set only containing vehicle state data and driving behavior data, the physiological pressure level is deduced, and a physiological reward is calculated according to the physiological pressure level.

The invention discloses a pressurizing oxygen cabin pressure control method which comprises the following control steps: after an oxygen cabin door is completely closed, a compressor in a pressure control system is started along with linkage control to implement a pressurizing mode in an oxygen cabin body; in the process of pressurizing the inside of the oxygen cabin, three paths of electric ball valves in the air circulation system are started according to three pressure gears set and monitored by an oxygen cabin pressure control system to open the corresponding electric ball valves to release pressure; and when the pressure in the oxygen cabin exceeds the pressure gear in the set three-gear pressure, the corresponding gear electric ball valve is automatically started and opened to execute the pressure relief task, so that the oxygen cabin pressure in the oxygen cabin is kept in a safe and effective pressure level interval, the pressure control in the oxygen cabin is simple, convenient and effective, and the pressure control cost is low.

The present invention relates to a tactile sensor apparatus including a tactile sensor using an air pressure detecting method through an air chamber, a processor that detects a pressure level based on a degree of deformation of a membrane according to an internal pressure change of the air chamber of the tactile sensor, and a communication module that transmits the pressure level to a central processing device of a robot.

The invention provides a dangerous waste landfill leakage emergency shield blocking and co-processing method and system, and relates to the technical field of underground pollution prevention and control and environment emergency treatment. On-site monitoring data are collected under the unified space-time reference, a pollution feather envelope line and shield curtain geometry are determined based on rapid inversion, a shield tunneling machine is driven to form a waterproof curtain, functional pipe pieces are arranged, an inward flow field is established in the curtain, and the water level difference and the negative pressure level are controlled in real time. The control terminal calculates a risk evaluation and dosage flow velocity instruction set according to the monitoring data and the extraction parameter set, and issues the risk evaluation and dosage flow velocity instruction set to the grouting, extraction and agent injection system to realize synchronous operation of curtain reinforcement and in-situ chemical repair; when the risk and repair indexes reach the standard, load reduction and plugging are carried out, and long-term monitoring is carried out. According to the method, rapid sealing control, dynamic repairing and intelligent decision making of the hazardous waste leakage area are achieved, and the accuracy of emergency disposal is improved.

Device for generating energy from compressed air, comprising an air turbine (16) which is designed to expand gaseous air from a first pressure level to a second pressure level and in the process to obtain first energy, comprising a combustion chamber (17) which is designed to receive the air expanded in the air turbine and to burn fuel therein, and comprising an exhaust gas turbine (18) which is designed to expand exhaust gas produced during the combustion of the fuel in the combustion chamber (17) and in the process to obtain second energy, wherein at least the air turbine and the exhaust gas turbine have a common housing.

The utility model discloses an air pressure liquid level meter, a liquid storage device and plant protection equipment. The first waterproof pipe is communicated with the air pressure sensor; the inner pipe diameter of the air guide pipe is larger than that of the first waterproof pipe, one end of the air guide pipe is communicated with the air pressure sensor through the first waterproof pipe, and the other end of the air guide pipe is used for extending into liquid to sense water pressure. Under the normal condition, the air guide pipe and the air pressure sensor can be communicated through the first waterproof pipe, so that the air pressure sensor can normally sense the air pressure of the air guide pipe, and the liquid level detection function is achieved; in addition, the air pressure sensor can be waterproof through the first waterproof pipe.

A system to produce a mixture of fluids includes a pressure source, a pressure regulator, at least a first container containing a first fluid and a second container containing a second fluid, and a microfluidic mixer. A control unit is configured to control the pressure level of the first fluid and the pressure level of the second fluid. The control unit is also configured to control an opening and closing of the first valve and of the second valve to inject the first fluid and second fluid successively into the microfluidic mixer, thereby generating a profile of fringes of the first fluid and of the second fluid within the common outlet channel.

An arrangement for the needs-based control of the flow temperatures of cooling / lubricating oil flows in an electric traction drive having an electrically controllable motor-pump unit and a hydraulic unit, wherein the motor-pump unit can be controlled in two directions of rotation, namely in a first direction of rotation and in a second direction of rotation which is opposite to the first direction of rotation, and wherein a first pressure level and a second pressure level, which is higher than the first pressure level, can be set at the motor-pump unit by way of the closed-loop control of the rotational speed in the first direction of rotation or the second direction of rotation. The motor-pump unit is connected by way of the hydraulic unit to multiple fluid outlets for a first, a second and a third partial volume flow which are connected for cooling and / or heating and / or lubrication at least to the stator of an electric drive unit, and / or the rotor of the electric drive unit and / or a gearbox, wherein the arrangement comprises a heat exchanger, and the first partial volume flow is not connected to the heat exchanger, and wherein the direction of rotation and the pressure level of the motor-pump unit can be adjusted by way of an electric control unit and three different operating modes can be set depending on the direction of rotation and the pressure level.

The invention relates to the technical field of external thoracic drainage, and particularly discloses a drainage device for thoracic surgery nursing, which comprises a bottle body and a collecting cavity, the collecting cavity is arranged on the bottle body, the bottle body is provided with a water seal cavity and a pressure regulating cavity, the collecting cavity is used for collecting hydrops and gas discharged from the thoracic cavity of a patient, and the water seal cavity discharges the gas in the body of the patient in the form of bubbles. The pressure adjusting cavity is used for adjusting and maintaining the negative pressure level of the drainage device, the collecting cavity is connected with a drainage tube, and the monitoring assembly is arranged in the collecting cavity, corresponds to the drainage tube and is used for monitoring the flow of accumulated liquid in the drainage tube and the negative pressure in the collecting cavity and judging whether the drainage tube is blocked or damaged or not. By monitoring the hydrops flow in the drainage tube and the negative pressure state in the collection cavity, whether the drainage tube is blocked or damaged or not is judged according to the hydrops flow and the negative pressure state, and when facing abnormal drainage, medical staff can give an alarm in time to inform the medical staff to quickly judge whether the drainage tube is blocked or is physically damaged.

Examples refer to powder feeding systems including a powder feeder connectable to a laser metal deposition equipment, the powder feeder having a feeding hopper to store powder, a first powder outlet through which powder is feed to the laser metal deposition equipment and a first powder inlet, a refilling hopper to store additional powder that includes a second powder outlet connected to the first powder inlet through which the additional powder is provided to the feeding hopper and a pressure generation component to generate an operating pressure level inside the feeding hopper. The system also includes a controller that, during normal operation of the powder feeder and upon reception of a refilling signal, causes the generation of a pressure level inside the refilling hopper substantially equal to the operating pressure level and causes the passage of additional powder from the refilling hopper to the feeding hopper.

The present invention relates to a device for direct injection of a gaseous fuel, in particular hydrogen, which device comprises: a pressure-control unit which is designed to convert a supplied variable pressure level of the gaseous fuel into a fixed constant output pressure level; a distributor unit which is connected to at least one injector for direct injection of the gaseous fuel, which has been guided through the pressure-control unit, into a combustion chamber; and a fluid connection between the pressure-control unit and the distributor unit in order to guide the gaseous fuel at a constant output pressure downstream towards the distributor unit. The device is characterized in that a flow-control valve is disposed along the fluid connection and designed to adjust the constant output pressure level of the gaseous fuel to a desired target pressure not exceeding the output pressure level.

The invention discloses an air pressure control system and a test system thereof.The air pressure control system is composed of an air control stop valve, a pressurization module, a low-pressure test module and at least one high-pressure test module and comprises a nitrogen inlet, the nitrogen inlet is communicated with a low-pressure test port through a first pipeline, and the first pipeline is communicated with the low-pressure test port in the direction from the nitrogen inlet to the low-pressure test port; the first pipeline is sequentially provided with a pneumatic control stop valve and a low-pressure test module; a first inlet of the pressurization module is connected with a compressed air inlet, a first branch pipeline is arranged between the pneumatic control stop valve and the low-pressure test module and connected with a second inlet of the pressurization module, and an outlet of the pressurization module is connected with the high-pressure test port through at least one second pipeline. And each second pipeline corresponds to one high-pressure test port and is provided with a high-pressure test module. The air pressure control system provided by the invention can measure a plurality of pressure grades, is high in test efficiency, and has the advantages of reliable function and long service life.

A system for evacuating and sealing containers filled with product, for example, food product, includes an enclosed, sealed housing wherein the pressure level and the atmospheric content can be controlled. A vacuum shroud is positioned in registry with a container entrance opening in the housing, the shroud connectible to a vacuum source and to a source of replaceable gas to replace the ambient air to be removed from the container. The shroud is advanceable to seal the container entrance opening and is retractable from the container entrance opening. A container transport system inserts the container through the housing entrance opening and into the shroud. Thereupon, a sealing system seals the housing from the ambient after the container has been inserted into the shroud. After the air in the container has been replaced with an inert gas and then the shroud retracted, a closure subsystem applies a cover to the evacuated container. Thereafter, an out feed subsystem removes the closed container from the housing while maintaining the atmospheric content and pressure level within the housing.

The disclosure concerns a system (1) for monitoring a cleaning process in a milking installation (2). A central controller (3) obtains from a pressure sensor arrangement (36) at each milking point (10) of the installation (2) an identity indicator indicative, a series of measured values of pressure levels indicative of pressure levels, and temporal indicators. The central controller (3) is configured: —for each pressure sensor arrangement (36) to store in a database (5), —to evaluate the series of measured values of pressure levels to determine a progress of a slug of cleaning liquid along a common milk line (4), and—to issue a notification signal related to the progress of the slug of cleaning liquid along the common milk line (4).

Method for operating a forming device for forming plastic preforms into plastic containers, wherein the forming device (1) has a movable carrier (20) on which a plurality of forming stations (2) are arranged, wherein each of these forming stations in an operating operation forms plastic preforms (10) into the plastic containers by applying a flowing and in particular gaseous medium, wherein in the operating operation the plastic preforms are subjected to at least two different pressure levels for their expansion and at least two valves are used for this application, characterized in that at least a measured value is determined at least temporarily, which is characteristic for a switching time and / or a switching time delay of at least one of the valves, wherein this measured value results from a pressure measurement.

The utility model relates to the field of hydraulic control and suspension damping, in particular to a damping system. A damping system includes: an oil cylinder; the energy accumulator group comprises at least two energy accumulators, the at least two energy accumulators are located at different pressure grades, and the energy accumulators are communicated with the oil cylinder; and the travel switch monitors the travel of the oil cylinder so as to control the oil cylinder to be communicated with the energy accumulator of the corresponding pressure grade. According to one embodiment of the utility model, the energy accumulator group comprises a high-pressure energy accumulator and a medium-pressure energy accumulator, and both the high-pressure energy accumulator and the medium-pressure energy accumulator are communicated with a rodless cavity of the oil cylinder. The technical problems that in the prior art, a suspension hydraulic system cannot adapt to different pressure grades, and the load range of a suspension system is small are solved.

This invention relates to the field of structural defect detection technology for pressurized water-passing tunnels, and discloses an adaptive attitude control submersible and control method for detecting structural defects in pressurized water-passing tunnels. The submersible includes directional wheels, a propulsion module, a slide rail, an attitude adjustment module, an underwater detection module, a support frame, and a tunnel lining structure. The method includes: after starting the submersible, the automatic control module performs a self-check, acquires initial attitude data through the attitude monitoring module, and performs calibration; according to different conditions in the tunnel, the attitude adjustment module adjusts the pressure levels of the hydraulic and pneumatic chambers; the automatic control module controls the propulsion motor and turbine to drive the submersible forward; a visual inspection device achieves multi-directional synchronous detection within the tunnel; the automatic control module is connected to each component through electronic circuitry, and dynamically adjusts the gravity and buoyancy in the device based on the attitude monitoring data obtained by the attitude monitoring module. This invention provides solid technical support for tunnel structural defect detection.

A device for compressing limbs and a method for compressing lower limbs by using same are provided. The limb compression device comprises: first to Nth air cells sequentially arranged from a front end of a limb toward a body in the longitudinal direction of the limb; a pressure adjustment unit, which can inject air into the N air cells and discharge the air from the air cells so as to pressurize and depressurize same; and a control unit for controlling operation of the pressure adjustment unit. The N air cells are divided into: a first cell group including one or more air cells arranged closer to the front end of the limb; and a second cell group arranged closer than the first cell group to the body. The control unit performs over-pressurization control in which the first cell group is pressurized up to an over-pressure level and then depressurized, and then performs sequential pressurization control in which the first cell group is pressurized, the second cell group is subsequently pressurized, and then the first cell group and the second cell group are depressurized.

The present invention relates to a marine thermal system with a multi-hydrophobic structure, including an auxiliary steam turbine generator set, an auxiliary condenser, and a bypass system. The auxiliary steam turbine generator set has an air ejector drain interface, a main steam drain interface, a main steam valve drain interface, a front cylinder drain interface, and a steam seal supplementary steam drain interface. A multi-stage desuperheating and pressure reducing device is arranged in the bypass system. The first and second stage desuperheating and pressure reducing devices are both composed of the form of "pressure reducing valve + desuperheater". The pressure reduction ratios of the desuperheating and pressure reducing devices at all levels match the drain pressure, that is, the steam pressure after desuperheating and pressure reducing at all levels is less than the drain pressure in the pipeline section into which it is discharged. The present invention optimizes the complex system in which steam drains of different pressure levels of the marine steam turbine generator set need to be led to various pressure vessels, effectively reducing the space occupied by the equipment. At the same time, introducing high-temperature drains into the condenser is beneficial to the thermal deaeration of condensate, improving the economy of the entire circulation system; and can quickly and stably control the steam network pressure, which is beneficial to the safety of the steam system.

The invention relates to a method (200) for controlling removal of cryogenic hydrogen from a cryogenic pressure tank (16). The method (200) comprises controlling (202) the removal of the hydrogen from the cryogenic pressure tank (18) in a first phase (402) in such a way that the removal is effected substantially adiabatically, and controlling (204) the removal of the hydrogen from the cryogenic pressure tank (18) in a second phase (406) in such a way that the removal is effected with active supply of heat to the hydrogen stored in the cryogenic pressure tank (18). The method (200) further comprises determining (206) a switchover pressure level (404), which is dependent on a minimum measurement accuracy to be maintained for a quantity measurement of the hydrogen stored in the cryogenic pressure tank (18), and defining (208) the switchover pressure level (404) as a threshold value of the control for a transition from the first phase (402) to the second phase (406).

The invention relates to an installation for storing and distributing cryogenic fluid, for example liquid hydrogen, comprising a cryogenic reservoir which is buried below the ground, a liquid withdrawal circuit connected to the reservoir with a downstream end located above the ground and designed to be connected to a consumer, the withdrawal circuit comprising a cryogenic pump arranged above the ground, the installation comprising a pipe for the recovery of vaporization gas generated inside the cryogenic pump, having a downstream end connected to the reservoir, the pipe for the recovery of the vaporization gases comprising at least one device for controlling the pressure and / or flow rate of the vaporization gas returned to the reservoir and the device for controlling the pressure and / or flow rate being configured to control the pressure inside the reservoir at a pressure level which is greater than the pressure at the inlet of the cryogenic pump.

A method for producing a plurality of product gas streams by a pressure swing adsorption (PSA) unit is described. The method comprises: receiving first feed gas stream 12 having a first pressure; receiving a second feed gas stream 14 having a second pressure that is lower than the first pressure; producing at least a first product stream 16, a second product stream 20, and a third product stream 18 without compressing the second feed gas stream to a pressure level corresponding to the first pressure. The first feed gas stream 12 may comprise non- adsorbed components such as hydrogen and helium; least adsorbable components such as water and hydrocarbons heavier than methane; less adsorbable components such as carbon monoxide and methane; and heavily adsorbable components such as carbon dioxide. The second feed gas stream 14 may comprise non-adsorbed and least adsorbable components.

Power systems and methods of controlling an engine driven air compressor include an air compressor driven by an engine via a clutch. A first pressure sensor configured to sense a pressure level at an outlet of the air compressor. An inlet valve configured to close in response to the first pressure sensor sensing a pressure level above a first pressure level. In addition, a second pressure sensor to sense a pressure level below a second pressure level at a housing of the air compressor, wherein the clutch is configured to disengage in response to the second pressure level, wherein the first pressure level is higher than the second pressure level.

In one embodiment, an aspiration thrombectomy system includes an aspiration catheter having a proximal end, a distal end, and a lumen to accommodate fluid, a first valve capable of removing fluids from the system to alter a level of pressure in the system in a first manner, a second valve capable of providing fluids into the system to alter the level of pressure in the system in a second manner, and a cutting instrument at the distal end of the aspiration catheter having a spiral body connected to a rounded element having a scooped-out portion for engaging a target occlusive material, the cutting instrument being capable of axial and rotational motion, and the system being capable of cutting and removing the occlusive material based on the motions of the cutting instrument and one or more of the first manner and the second manner of altering the level of pressure.